diff options
Diffstat (limited to 'src/fileio.c')
| -rw-r--r-- | src/fileio.c | 4047 |
1 files changed, 0 insertions, 4047 deletions
diff --git a/src/fileio.c b/src/fileio.c deleted file mode 100644 index 487cb1184d3..00000000000 --- a/src/fileio.c +++ /dev/null @@ -1,4047 +0,0 @@ -/* File IO for GNU Emacs. - Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994 Free Software Foundation, Inc. - -This file is part of GNU Emacs. - -GNU Emacs is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Emacs is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Emacs; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include <config.h> - -#include <sys/types.h> -#include <sys/stat.h> - -#if !defined (S_ISLNK) && defined (S_IFLNK) -# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) -#endif - -#if !defined (S_ISREG) && defined (S_IFREG) -# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) -#endif - -#ifdef VMS -#include "vms-pwd.h" -#else -#include <pwd.h> -#endif - -#ifdef MSDOS -#include "msdos.h" -#include <sys/param.h> -#endif - -#include <ctype.h> - -#ifdef VMS -#include "vmsdir.h" -#include <perror.h> -#include <stddef.h> -#include <string.h> -#endif - -#include <errno.h> - -#ifndef vax11c -extern int errno; -#endif - -extern char *strerror (); - -#ifdef APOLLO -#include <sys/time.h> -#endif - -#ifndef USG -#ifndef VMS -#ifndef BSD4_1 -#define HAVE_FSYNC -#endif -#endif -#endif - -#include "lisp.h" -#include "intervals.h" -#include "buffer.h" -#include "window.h" - -#ifdef VMS -#include <file.h> -#include <rmsdef.h> -#include <fab.h> -#include <nam.h> -#endif - -#include "systime.h" - -#ifdef HPUX -#include <netio.h> -#ifndef HPUX8 -#ifndef HPUX9 -#include <errnet.h> -#endif -#endif -#endif - -#ifndef O_WRONLY -#define O_WRONLY 1 -#endif - -#define min(a, b) ((a) < (b) ? (a) : (b)) -#define max(a, b) ((a) > (b) ? (a) : (b)) - -/* Nonzero during writing of auto-save files */ -int auto_saving; - -/* Set by auto_save_1 to mode of original file so Fwrite_region will create - a new file with the same mode as the original */ -int auto_save_mode_bits; - -/* Alist of elements (REGEXP . HANDLER) for file names - whose I/O is done with a special handler. */ -Lisp_Object Vfile_name_handler_alist; - -/* Functions to be called to process text properties in inserted file. */ -Lisp_Object Vafter_insert_file_functions; - -/* Functions to be called to create text property annotations for file. */ -Lisp_Object Vwrite_region_annotate_functions; - -/* Nonzero means, when reading a filename in the minibuffer, - start out by inserting the default directory into the minibuffer. */ -int insert_default_directory; - -/* On VMS, nonzero means write new files with record format stmlf. - Zero means use var format. */ -int vms_stmlf_recfm; - -static Lisp_Object Vinhibit_file_name_handlers; - -Lisp_Object Qfile_error, Qfile_already_exists; - -Lisp_Object Qfile_name_history; - -Lisp_Object Qcar_less_than_car; - -report_file_error (string, data) - char *string; - Lisp_Object data; -{ - Lisp_Object errstring; - - errstring = build_string (strerror (errno)); - - /* System error messages are capitalized. Downcase the initial - unless it is followed by a slash. */ - if (XSTRING (errstring)->data[1] != '/') - XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); - - while (1) - Fsignal (Qfile_error, - Fcons (build_string (string), Fcons (errstring, data))); -} - -close_file_unwind (fd) - Lisp_Object fd; -{ - close (XFASTINT (fd)); -} - -/* Restore point, having saved it as a marker. */ - -restore_point_unwind (location) - Lisp_Object location; -{ - SET_PT (marker_position (location)); - Fset_marker (location, Qnil, Qnil); -} - -Lisp_Object Qexpand_file_name; -Lisp_Object Qdirectory_file_name; -Lisp_Object Qfile_name_directory; -Lisp_Object Qfile_name_nondirectory; -Lisp_Object Qunhandled_file_name_directory; -Lisp_Object Qfile_name_as_directory; -Lisp_Object Qcopy_file; -Lisp_Object Qmake_directory; -Lisp_Object Qdelete_directory; -Lisp_Object Qdelete_file; -Lisp_Object Qrename_file; -Lisp_Object Qadd_name_to_file; -Lisp_Object Qmake_symbolic_link; -Lisp_Object Qfile_exists_p; -Lisp_Object Qfile_executable_p; -Lisp_Object Qfile_readable_p; -Lisp_Object Qfile_symlink_p; -Lisp_Object Qfile_writable_p; -Lisp_Object Qfile_directory_p; -Lisp_Object Qfile_accessible_directory_p; -Lisp_Object Qfile_modes; -Lisp_Object Qset_file_modes; -Lisp_Object Qfile_newer_than_file_p; -Lisp_Object Qinsert_file_contents; -Lisp_Object Qwrite_region; -Lisp_Object Qverify_visited_file_modtime; -Lisp_Object Qset_visited_file_modtime; - -DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 1, 1, 0, - "Return FILENAME's handler function, if its syntax is handled specially.\n\ -Otherwise, return nil.\n\ -A file name is handled if one of the regular expressions in\n\ -`file-name-handler-alist' matches it.\n\n\ -If FILENAME is a member of `inhibit-file-name-handlers',\n\ -then its handler is not run. This is lets handlers\n\ -use the standard functions without calling themselves recursively.") - (filename) - Lisp_Object filename; -{ - /* This function must not munge the match data. */ - Lisp_Object chain; - - CHECK_STRING (filename, 0); - - if (! NILP (Vinhibit_file_name_handlers)) - { - Lisp_Object tail; - for (tail = Vinhibit_file_name_handlers; CONSP (tail); - tail = XCONS (tail)->cdr) - { - Lisp_Object tem; - tem = Fstring_equal (tail, filename); - if (!NILP (tem)) - return Qnil; - } - } - - for (chain = Vfile_name_handler_alist; XTYPE (chain) == Lisp_Cons; - chain = XCONS (chain)->cdr) - { - Lisp_Object elt; - elt = XCONS (chain)->car; - if (XTYPE (elt) == Lisp_Cons) - { - Lisp_Object string; - string = XCONS (elt)->car; - if (XTYPE (string) == Lisp_String - && fast_string_match (string, filename) >= 0) - return XCONS (elt)->cdr; - } - - QUIT; - } - return Qnil; -} - -DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, - 1, 1, 0, - "Return the directory component in file name NAME.\n\ -Return nil if NAME does not include a directory.\n\ -Otherwise return a directory spec.\n\ -Given a Unix syntax file name, returns a string ending in slash;\n\ -on VMS, perhaps instead a string ending in `:', `]' or `>'.") - (file) - Lisp_Object file; -{ - register unsigned char *beg; - register unsigned char *p; - Lisp_Object handler; - - CHECK_STRING (file, 0); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (file); - if (!NILP (handler)) - return call2 (handler, Qfile_name_directory, file); - -#ifdef FILE_SYSTEM_CASE - file = FILE_SYSTEM_CASE (file); -#endif - beg = XSTRING (file)->data; - p = beg + XSTRING (file)->size; - - while (p != beg && p[-1] != '/' -#ifdef VMS - && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' -#endif /* VMS */ -#ifdef MSDOS - && p[-1] != ':' -#endif - ) p--; - - if (p == beg) - return Qnil; -#ifdef MSDOS - /* Expansion of "c:" to drive and default directory. */ - if (p == beg + 2 && beg[1] == ':') - { - int drive = (*beg) - 'a'; - /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ - unsigned char *res = alloca (MAXPATHLEN + 5); - if (getdefdir (drive + 1, res + 2)) - { - res[0] = drive + 'a'; - res[1] = ':'; - if (res[strlen (res) - 1] != '/') - strcat (res, "/"); - beg = res; - p = beg + strlen (beg); - } - } -#endif - return make_string (beg, p - beg); -} - -DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, - 1, 1, 0, - "Return file name NAME sans its directory.\n\ -For example, in a Unix-syntax file name,\n\ -this is everything after the last slash,\n\ -or the entire name if it contains no slash.") - (file) - Lisp_Object file; -{ - register unsigned char *beg, *p, *end; - Lisp_Object handler; - - CHECK_STRING (file, 0); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (file); - if (!NILP (handler)) - return call2 (handler, Qfile_name_nondirectory, file); - - beg = XSTRING (file)->data; - end = p = beg + XSTRING (file)->size; - - while (p != beg && p[-1] != '/' -#ifdef VMS - && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' -#endif /* VMS */ -#ifdef MSDOS - && p[-1] != ':' -#endif - ) p--; - - return make_string (p, end - p); -} - -DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, Sunhandled_file_name_directory, 1, 1, 0, - "Return a directly usable directory name somehow associated with FILENAME.\n\ -A `directly usable' directory name is one that may be used without the\n\ -intervention of any file handler.\n\ -If FILENAME is a directly usable file itself, return\n\ -(file-name-directory FILENAME).\n\ -The `call-process' and `start-process' functions use this function to\n\ -get a current directory to run processes in.") - (filename) - Lisp_Object filename; -{ - Lisp_Object handler; - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); - if (!NILP (handler)) - return call2 (handler, Qunhandled_file_name_directory, filename); - - return Ffile_name_directory (filename); -} - - -char * -file_name_as_directory (out, in) - char *out, *in; -{ - int size = strlen (in) - 1; - - strcpy (out, in); - -#ifdef VMS - /* Is it already a directory string? */ - if (in[size] == ':' || in[size] == ']' || in[size] == '>') - return out; - /* Is it a VMS directory file name? If so, hack VMS syntax. */ - else if (! index (in, '/') - && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) - || (size > 3 && ! strcmp (&in[size - 3], ".dir")) - || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) - || ! strncmp (&in[size - 5], ".dir", 4)) - && (in[size - 1] == '.' || in[size - 1] == ';') - && in[size] == '1'))) - { - register char *p, *dot; - char brack; - - /* x.dir -> [.x] - dir:x.dir --> dir:[x] - dir:[x]y.dir --> dir:[x.y] */ - p = in + size; - while (p != in && *p != ':' && *p != '>' && *p != ']') p--; - if (p != in) - { - strncpy (out, in, p - in); - out[p - in] = '\0'; - if (*p == ':') - { - brack = ']'; - strcat (out, ":["); - } - else - { - brack = *p; - strcat (out, "."); - } - p++; - } - else - { - brack = ']'; - strcpy (out, "[."); - } - dot = index (p, '.'); - if (dot) - { - /* blindly remove any extension */ - size = strlen (out) + (dot - p); - strncat (out, p, dot - p); - } - else - { - strcat (out, p); - size = strlen (out); - } - out[size++] = brack; - out[size] = '\0'; - } -#else /* not VMS */ - /* For Unix syntax, Append a slash if necessary */ -#ifdef MSDOS - if (out[size] != ':' && out[size] != '/') -#else - if (out[size] != '/') -#endif - strcat (out, "/"); -#endif /* not VMS */ - return out; -} - -DEFUN ("file-name-as-directory", Ffile_name_as_directory, - Sfile_name_as_directory, 1, 1, 0, - "Return a string representing file FILENAME interpreted as a directory.\n\ -This operation exists because a directory is also a file, but its name as\n\ -a directory is different from its name as a file.\n\ -The result can be used as the value of `default-directory'\n\ -or passed as second argument to `expand-file-name'.\n\ -For a Unix-syntax file name, just appends a slash.\n\ -On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") - (file) - Lisp_Object file; -{ - char *buf; - Lisp_Object handler; - - CHECK_STRING (file, 0); - if (NILP (file)) - return Qnil; - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (file); - if (!NILP (handler)) - return call2 (handler, Qfile_name_as_directory, file); - - buf = (char *) alloca (XSTRING (file)->size + 10); - return build_string (file_name_as_directory (buf, XSTRING (file)->data)); -} - -/* - * Convert from directory name to filename. - * On VMS: - * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 - * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 - * On UNIX, it's simple: just make sure there is a terminating / - - * Value is nonzero if the string output is different from the input. - */ - -directory_file_name (src, dst) - char *src, *dst; -{ - long slen; -#ifdef VMS - long rlen; - char * ptr, * rptr; - char bracket; - struct FAB fab = cc$rms_fab; - struct NAM nam = cc$rms_nam; - char esa[NAM$C_MAXRSS]; -#endif /* VMS */ - - slen = strlen (src); -#ifdef VMS - if (! index (src, '/') - && (src[slen - 1] == ']' - || src[slen - 1] == ':' - || src[slen - 1] == '>')) - { - /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ - fab.fab$l_fna = src; - fab.fab$b_fns = slen; - fab.fab$l_nam = &nam; - fab.fab$l_fop = FAB$M_NAM; - - nam.nam$l_esa = esa; - nam.nam$b_ess = sizeof esa; - nam.nam$b_nop |= NAM$M_SYNCHK; - - /* We call SYS$PARSE to handle such things as [--] for us. */ - if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL) - { - slen = nam.nam$b_esl; - if (esa[slen - 1] == ';' && esa[slen - 2] == '.') - slen -= 2; - esa[slen] = '\0'; - src = esa; - } - if (src[slen - 1] != ']' && src[slen - 1] != '>') - { - /* what about when we have logical_name:???? */ - if (src[slen - 1] == ':') - { /* Xlate logical name and see what we get */ - ptr = strcpy (dst, src); /* upper case for getenv */ - while (*ptr) - { - if ('a' <= *ptr && *ptr <= 'z') - *ptr -= 040; - ptr++; - } - dst[slen - 1] = 0; /* remove colon */ - if (!(src = egetenv (dst))) - return 0; - /* should we jump to the beginning of this procedure? - Good points: allows us to use logical names that xlate - to Unix names, - Bad points: can be a problem if we just translated to a device - name... - For now, I'll punt and always expect VMS names, and hope for - the best! */ - slen = strlen (src); - if (src[slen - 1] != ']' && src[slen - 1] != '>') - { /* no recursion here! */ - strcpy (dst, src); - return 0; - } - } - else - { /* not a directory spec */ - strcpy (dst, src); - return 0; - } - } - bracket = src[slen - 1]; - - /* If bracket is ']' or '>', bracket - 2 is the corresponding - opening bracket. */ - ptr = index (src, bracket - 2); - if (ptr == 0) - { /* no opening bracket */ - strcpy (dst, src); - return 0; - } - if (!(rptr = rindex (src, '.'))) - rptr = ptr; - slen = rptr - src; - strncpy (dst, src, slen); - dst[slen] = '\0'; - if (*rptr == '.') - { - dst[slen++] = bracket; - dst[slen] = '\0'; - } - else - { - /* If we have the top-level of a rooted directory (i.e. xx:[000000]), - then translate the device and recurse. */ - if (dst[slen - 1] == ':' - && dst[slen - 2] != ':' /* skip decnet nodes */ - && strcmp(src + slen, "[000000]") == 0) - { - dst[slen - 1] = '\0'; - if ((ptr = egetenv (dst)) - && (rlen = strlen (ptr) - 1) > 0 - && (ptr[rlen] == ']' || ptr[rlen] == '>') - && ptr[rlen - 1] == '.') - { - char * buf = (char *) alloca (strlen (ptr) + 1); - strcpy (buf, ptr); - buf[rlen - 1] = ']'; - buf[rlen] = '\0'; - return directory_file_name (buf, dst); - } - else - dst[slen - 1] = ':'; - } - strcat (dst, "[000000]"); - slen += 8; - } - rptr++; - rlen = strlen (rptr) - 1; - strncat (dst, rptr, rlen); - dst[slen + rlen] = '\0'; - strcat (dst, ".DIR.1"); - return 1; - } -#endif /* VMS */ - /* Process as Unix format: just remove any final slash. - But leave "/" unchanged; do not change it to "". */ - strcpy (dst, src); - if (slen > 1 - && dst[slen - 1] == '/' -#ifdef MSDOS - && dst[slen - 2] != ':' -#endif - ) - dst[slen - 1] = 0; - return 1; -} - -DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, - 1, 1, 0, - "Returns the file name of the directory named DIR.\n\ -This is the name of the file that holds the data for the directory DIR.\n\ -This operation exists because a directory is also a file, but its name as\n\ -a directory is different from its name as a file.\n\ -In Unix-syntax, this function just removes the final slash.\n\ -On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ -it returns a file name such as \"[X]Y.DIR.1\".") - (directory) - Lisp_Object directory; -{ - char *buf; - Lisp_Object handler; - - CHECK_STRING (directory, 0); - - if (NILP (directory)) - return Qnil; - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (directory); - if (!NILP (handler)) - return call2 (handler, Qdirectory_file_name, directory); - -#ifdef VMS - /* 20 extra chars is insufficient for VMS, since we might perform a - logical name translation. an equivalence string can be up to 255 - chars long, so grab that much extra space... - sss */ - buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); -#else - buf = (char *) alloca (XSTRING (directory)->size + 20); -#endif - directory_file_name (XSTRING (directory)->data, buf); - return build_string (buf); -} - -DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, - "Generate temporary file name (string) starting with PREFIX (a string).\n\ -The Emacs process number forms part of the result,\n\ -so there is no danger of generating a name being used by another process.") - (prefix) - Lisp_Object prefix; -{ - Lisp_Object val; - val = concat2 (prefix, build_string ("XXXXXX")); - mktemp (XSTRING (val)->data); - return val; -} - -DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, - "Convert FILENAME to absolute, and canonicalize it.\n\ -Second arg DEFAULT is directory to start with if FILENAME is relative\n\ - (does not start with slash); if DEFAULT is nil or missing,\n\ -the current buffer's value of default-directory is used.\n\ -Path components that are `.' are removed, and \n\ -path components followed by `..' are removed, along with the `..' itself;\n\ -note that these simplifications are done without checking the resulting\n\ -paths in the file system.\n\ -An initial `~/' expands to your home directory.\n\ -An initial `~USER/' expands to USER's home directory.\n\ -See also the function `substitute-in-file-name'.") - (name, defalt) - Lisp_Object name, defalt; -{ - unsigned char *nm; - - register unsigned char *newdir, *p, *o; - int tlen; - unsigned char *target; - struct passwd *pw; -#ifdef VMS - unsigned char * colon = 0; - unsigned char * close = 0; - unsigned char * slash = 0; - unsigned char * brack = 0; - int lbrack = 0, rbrack = 0; - int dots = 0; -#endif /* VMS */ -#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ - int drive = -1; - int relpath = 0; - unsigned char *tmp, *defdir; -#endif - Lisp_Object handler; - - CHECK_STRING (name, 0); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (name); - if (!NILP (handler)) - return call3 (handler, Qexpand_file_name, name, defalt); - - /* Use the buffer's default-directory if DEFALT is omitted. */ - if (NILP (defalt)) - defalt = current_buffer->directory; - CHECK_STRING (defalt, 1); - - /* Make sure DEFALT is properly expanded. - It would be better to do this down below where we actually use - defalt. Unfortunately, calling Fexpand_file_name recursively - could invoke GC, and the strings might be relocated. This would - be annoying because we have pointers into strings lying around - that would need adjusting, and people would add new pointers to - the code and forget to adjust them, resulting in intermittent bugs. - Putting this call here avoids all that crud. - - The EQ test avoids infinite recursion. */ - if (! NILP (defalt) && !EQ (defalt, name) - /* This saves time in a common case. */ - && XSTRING (defalt)->data[0] != '/') - { - struct gcpro gcpro1; - - GCPRO1 (name); - defalt = Fexpand_file_name (defalt, Qnil); - UNGCPRO; - } - -#ifdef VMS - /* Filenames on VMS are always upper case. */ - name = Fupcase (name); -#endif -#ifdef FILE_SYSTEM_CASE - name = FILE_SYSTEM_CASE (name); -#endif - - nm = XSTRING (name)->data; - -#ifdef MSDOS - /* firstly, strip drive name. */ - { - unsigned char *colon = rindex (nm, ':'); - if (colon) - if (nm == colon) - nm++; - else - { - drive = tolower (colon[-1]) - 'a'; - nm = colon + 1; - if (*nm != '/') - { - defdir = alloca (MAXPATHLEN + 1); - relpath = getdefdir (drive + 1, defdir); - } - } - } -#endif - - /* If nm is absolute, flush ...// and detect /./ and /../. - If no /./ or /../ we can return right away. */ - if ( - nm[0] == '/' -#ifdef VMS - || index (nm, ':') -#endif /* VMS */ - ) - { - /* If it turns out that the filename we want to return is just a - suffix of FILENAME, we don't need to go through and edit - things; we just need to construct a new string using data - starting at the middle of FILENAME. If we set lose to a - non-zero value, that means we've discovered that we can't do - that cool trick. */ - int lose = 0; - - p = nm; - while (*p) - { - /* Since we know the path is absolute, we can assume that each - element starts with a "/". */ - - /* "//" anywhere isn't necessarily hairy; we just start afresh - with the second slash. */ - if (p[0] == '/' && p[1] == '/' -#ifdef APOLLO - /* // at start of filename is meaningful on Apollo system */ - && nm != p -#endif /* APOLLO */ - ) - nm = p + 1; - - /* "~" is hairy as the start of any path element. */ - if (p[0] == '/' && p[1] == '~') - nm = p + 1, lose = 1; - - /* "." and ".." are hairy. */ - if (p[0] == '/' - && p[1] == '.' - && (p[2] == '/' - || p[2] == 0 - || (p[2] == '.' && (p[3] == '/' - || p[3] == 0)))) - lose = 1; -#ifdef VMS - if (p[0] == '\\') - lose = 1; - if (p[0] == '/') { - /* if dev:[dir]/, move nm to / */ - if (!slash && p > nm && (brack || colon)) { - nm = (brack ? brack + 1 : colon + 1); - lbrack = rbrack = 0; - brack = 0; - colon = 0; - } - slash = p; - } - if (p[0] == '-') -#ifndef VMS4_4 - /* VMS pre V4.4,convert '-'s in filenames. */ - if (lbrack == rbrack) - { - if (dots < 2) /* this is to allow negative version numbers */ - p[0] = '_'; - } - else -#endif /* VMS4_4 */ - if (lbrack > rbrack && - ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && - (p[1] == '.' || p[1] == ']' || p[1] == '>'))) - lose = 1; -#ifndef VMS4_4 - else - p[0] = '_'; -#endif /* VMS4_4 */ - /* count open brackets, reset close bracket pointer */ - if (p[0] == '[' || p[0] == '<') - lbrack++, brack = 0; - /* count close brackets, set close bracket pointer */ - if (p[0] == ']' || p[0] == '>') - rbrack++, brack = p; - /* detect ][ or >< */ - if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) - lose = 1; - if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') - nm = p + 1, lose = 1; - if (p[0] == ':' && (colon || slash)) - /* if dev1:[dir]dev2:, move nm to dev2: */ - if (brack) - { - nm = brack + 1; - brack = 0; - } - /* if /pathname/dev:, move nm to dev: */ - else if (slash) - nm = slash + 1; - /* if node::dev:, move colon following dev */ - else if (colon && colon[-1] == ':') - colon = p; - /* if dev1:dev2:, move nm to dev2: */ - else if (colon && colon[-1] != ':') - { - nm = colon + 1; - colon = 0; - } - if (p[0] == ':' && !colon) - { - if (p[1] == ':') - p++; - colon = p; - } - if (lbrack == rbrack) - if (p[0] == ';') - dots = 2; - else if (p[0] == '.') - dots++; -#endif /* VMS */ - p++; - } - if (!lose) - { -#ifdef VMS - if (index (nm, '/')) - return build_string (sys_translate_unix (nm)); -#endif /* VMS */ -#ifndef MSDOS - if (nm == XSTRING (name)->data) - return name; - return build_string (nm); -#endif - } - } - - /* Now determine directory to start with and put it in newdir */ - - newdir = 0; - - if (nm[0] == '~') /* prefix ~ */ - { - if (nm[1] == '/' -#ifdef VMS - || nm[1] == ':' -#endif /* VMS */ - || nm[1] == 0) /* ~ by itself */ - { - if (!(newdir = (unsigned char *) egetenv ("HOME"))) - newdir = (unsigned char *) ""; -#ifdef MSDOS - dostounix_filename (newdir); -#endif - nm++; -#ifdef VMS - nm++; /* Don't leave the slash in nm. */ -#endif /* VMS */ - } - else /* ~user/filename */ - { - for (p = nm; *p && (*p != '/' -#ifdef VMS - && *p != ':' -#endif /* VMS */ - ); p++); - o = (unsigned char *) alloca (p - nm + 1); - bcopy ((char *) nm, o, p - nm); - o [p - nm] = 0; - - pw = (struct passwd *) getpwnam (o + 1); - if (pw) - { - newdir = (unsigned char *) pw -> pw_dir; -#ifdef VMS - nm = p + 1; /* skip the terminator */ -#else - nm = p; -#endif /* VMS */ - } - - /* If we don't find a user of that name, leave the name - unchanged; don't move nm forward to p. */ - } - } - - if (nm[0] != '/' -#ifdef VMS - && !index (nm, ':') -#endif /* not VMS */ -#ifdef MSDOS - && drive == -1 -#endif - && !newdir) - { - newdir = XSTRING (defalt)->data; - } - -#ifdef MSDOS - if (newdir == 0 && relpath) - newdir = defdir; -#endif - if (newdir != 0) - { - /* Get rid of any slash at the end of newdir. */ - int length = strlen (newdir); - /* Adding `length > 1 &&' makes ~ expand into / when homedir - is the root dir. People disagree about whether that is right. - Anyway, we can't take the risk of this change now. */ -#ifdef MSDOS - if (newdir[1] != ':' && length > 1) -#endif - if (newdir[length - 1] == '/') - { - unsigned char *temp = (unsigned char *) alloca (length); - bcopy (newdir, temp, length - 1); - temp[length - 1] = 0; - newdir = temp; - } - tlen = length + 1; - } - else - tlen = 0; - - /* Now concatenate the directory and name to new space in the stack frame */ - tlen += strlen (nm) + 1; -#ifdef MSDOS - /* Add reserved space for drive name. */ - target = (unsigned char *) alloca (tlen + 2) + 2; -#else - target = (unsigned char *) alloca (tlen); -#endif - *target = 0; - - if (newdir) - { -#ifndef VMS - if (nm[0] == 0 || nm[0] == '/') - strcpy (target, newdir); - else -#endif - file_name_as_directory (target, newdir); - } - - strcat (target, nm); -#ifdef VMS - if (index (target, '/')) - strcpy (target, sys_translate_unix (target)); -#endif /* VMS */ - - /* Now canonicalize by removing /. and /foo/.. if they appear. */ - - p = target; - o = target; - - while (*p) - { -#ifdef VMS - if (*p != ']' && *p != '>' && *p != '-') - { - if (*p == '\\') - p++; - *o++ = *p++; - } - else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) - /* brackets are offset from each other by 2 */ - { - p += 2; - if (*p != '.' && *p != '-' && o[-1] != '.') - /* convert [foo][bar] to [bar] */ - while (o[-1] != '[' && o[-1] != '<') - o--; - else if (*p == '-' && *o != '.') - *--p = '.'; - } - else if (p[0] == '-' && o[-1] == '.' && - (p[1] == '.' || p[1] == ']' || p[1] == '>')) - /* flush .foo.- ; leave - if stopped by '[' or '<' */ - { - do - o--; - while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); - if (p[1] == '.') /* foo.-.bar ==> bar*/ - p += 2; - else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ - p++, o--; - /* else [foo.-] ==> [-] */ - } - else - { -#ifndef VMS4_4 - if (*p == '-' && - o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && - p[1] != ']' && p[1] != '>' && p[1] != '.') - *p = '_'; -#endif /* VMS4_4 */ - *o++ = *p++; - } -#else /* not VMS */ - if (*p != '/') - { - *o++ = *p++; - } - else if (!strncmp (p, "//", 2) -#ifdef APOLLO - /* // at start of filename is meaningful in Apollo system */ - && o != target -#endif /* APOLLO */ - ) - { - o = target; - p++; - } - else if (p[0] == '/' - && p[1] == '.' - && (p[2] == '/' - || p[2] == 0)) - { - /* If "/." is the entire filename, keep the "/". Otherwise, - just delete the whole "/.". */ - if (o == target && p[2] == '\0') - *o++ = *p; - p += 2; - } - else if (!strncmp (p, "/..", 3) - /* `/../' is the "superroot" on certain file systems. */ - && o != target - && (p[3] == '/' || p[3] == 0)) - { - while (o != target && *--o != '/') - ; -#ifdef APOLLO - if (o == target + 1 && o[-1] == '/' && o[0] == '/') - ++o; - else -#endif /* APOLLO */ - if (o == target && *o == '/') - ++o; - p += 3; - } - else - { - *o++ = *p++; - } -#endif /* not VMS */ - } - -#ifdef MSDOS - /* at last, set drive name. */ - if (target[1] != ':') - { - target -= 2; - target[0] = (drive < 0 ? getdisk () : drive) + 'a'; - target[1] = ':'; - } -#endif - - return make_string (target, o - target); -} -#if 0 -/* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. -DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, - "Convert FILENAME to absolute, and canonicalize it.\n\ -Second arg DEFAULT is directory to start with if FILENAME is relative\n\ - (does not start with slash); if DEFAULT is nil or missing,\n\ -the current buffer's value of default-directory is used.\n\ -Filenames containing `.' or `..' as components are simplified;\n\ -initial `~/' expands to your home directory.\n\ -See also the function `substitute-in-file-name'.") - (name, defalt) - Lisp_Object name, defalt; -{ - unsigned char *nm; - - register unsigned char *newdir, *p, *o; - int tlen; - unsigned char *target; - struct passwd *pw; - int lose; -#ifdef VMS - unsigned char * colon = 0; - unsigned char * close = 0; - unsigned char * slash = 0; - unsigned char * brack = 0; - int lbrack = 0, rbrack = 0; - int dots = 0; -#endif /* VMS */ - - CHECK_STRING (name, 0); - -#ifdef VMS - /* Filenames on VMS are always upper case. */ - name = Fupcase (name); -#endif - - nm = XSTRING (name)->data; - - /* If nm is absolute, flush ...// and detect /./ and /../. - If no /./ or /../ we can return right away. */ - if ( - nm[0] == '/' -#ifdef VMS - || index (nm, ':') -#endif /* VMS */ - ) - { - p = nm; - lose = 0; - while (*p) - { - if (p[0] == '/' && p[1] == '/' -#ifdef APOLLO - /* // at start of filename is meaningful on Apollo system */ - && nm != p -#endif /* APOLLO */ - ) - nm = p + 1; - if (p[0] == '/' && p[1] == '~') - nm = p + 1, lose = 1; - if (p[0] == '/' && p[1] == '.' - && (p[2] == '/' || p[2] == 0 - || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) - lose = 1; -#ifdef VMS - if (p[0] == '\\') - lose = 1; - if (p[0] == '/') { - /* if dev:[dir]/, move nm to / */ - if (!slash && p > nm && (brack || colon)) { - nm = (brack ? brack + 1 : colon + 1); - lbrack = rbrack = 0; - brack = 0; - colon = 0; - } - slash = p; - } - if (p[0] == '-') -#ifndef VMS4_4 - /* VMS pre V4.4,convert '-'s in filenames. */ - if (lbrack == rbrack) - { - if (dots < 2) /* this is to allow negative version numbers */ - p[0] = '_'; - } - else -#endif /* VMS4_4 */ - if (lbrack > rbrack && - ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && - (p[1] == '.' || p[1] == ']' || p[1] == '>'))) - lose = 1; -#ifndef VMS4_4 - else - p[0] = '_'; -#endif /* VMS4_4 */ - /* count open brackets, reset close bracket pointer */ - if (p[0] == '[' || p[0] == '<') - lbrack++, brack = 0; - /* count close brackets, set close bracket pointer */ - if (p[0] == ']' || p[0] == '>') - rbrack++, brack = p; - /* detect ][ or >< */ - if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) - lose = 1; - if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') - nm = p + 1, lose = 1; - if (p[0] == ':' && (colon || slash)) - /* if dev1:[dir]dev2:, move nm to dev2: */ - if (brack) - { - nm = brack + 1; - brack = 0; - } - /* if /pathname/dev:, move nm to dev: */ - else if (slash) - nm = slash + 1; - /* if node::dev:, move colon following dev */ - else if (colon && colon[-1] == ':') - colon = p; - /* if dev1:dev2:, move nm to dev2: */ - else if (colon && colon[-1] != ':') - { - nm = colon + 1; - colon = 0; - } - if (p[0] == ':' && !colon) - { - if (p[1] == ':') - p++; - colon = p; - } - if (lbrack == rbrack) - if (p[0] == ';') - dots = 2; - else if (p[0] == '.') - dots++; -#endif /* VMS */ - p++; - } - if (!lose) - { -#ifdef VMS - if (index (nm, '/')) - return build_string (sys_translate_unix (nm)); -#endif /* VMS */ - if (nm == XSTRING (name)->data) - return name; - return build_string (nm); - } - } - - /* Now determine directory to start with and put it in NEWDIR */ - - newdir = 0; - - if (nm[0] == '~') /* prefix ~ */ - if (nm[1] == '/' -#ifdef VMS - || nm[1] == ':' -#endif /* VMS */ - || nm[1] == 0)/* ~/filename */ - { - if (!(newdir = (unsigned char *) egetenv ("HOME"))) - newdir = (unsigned char *) ""; - nm++; -#ifdef VMS - nm++; /* Don't leave the slash in nm. */ -#endif /* VMS */ - } - else /* ~user/filename */ - { - /* Get past ~ to user */ - unsigned char *user = nm + 1; - /* Find end of name. */ - unsigned char *ptr = (unsigned char *) index (user, '/'); - int len = ptr ? ptr - user : strlen (user); -#ifdef VMS - unsigned char *ptr1 = index (user, ':'); - if (ptr1 != 0 && ptr1 - user < len) - len = ptr1 - user; -#endif /* VMS */ - /* Copy the user name into temp storage. */ - o = (unsigned char *) alloca (len + 1); - bcopy ((char *) user, o, len); - o[len] = 0; - - /* Look up the user name. */ - pw = (struct passwd *) getpwnam (o + 1); - if (!pw) - error ("\"%s\" isn't a registered user", o + 1); - - newdir = (unsigned char *) pw->pw_dir; - - /* Discard the user name from NM. */ - nm += len; - } - - if (nm[0] != '/' -#ifdef VMS - && !index (nm, ':') -#endif /* not VMS */ - && !newdir) - { - if (NILP (defalt)) - defalt = current_buffer->directory; - CHECK_STRING (defalt, 1); - newdir = XSTRING (defalt)->data; - } - - /* Now concatenate the directory and name to new space in the stack frame */ - - tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; - target = (unsigned char *) alloca (tlen); - *target = 0; - - if (newdir) - { -#ifndef VMS - if (nm[0] == 0 || nm[0] == '/') - strcpy (target, newdir); - else -#endif - file_name_as_directory (target, newdir); - } - - strcat (target, nm); -#ifdef VMS - if (index (target, '/')) - strcpy (target, sys_translate_unix (target)); -#endif /* VMS */ - - /* Now canonicalize by removing /. and /foo/.. if they appear */ - - p = target; - o = target; - - while (*p) - { -#ifdef VMS - if (*p != ']' && *p != '>' && *p != '-') - { - if (*p == '\\') - p++; - *o++ = *p++; - } - else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) - /* brackets are offset from each other by 2 */ - { - p += 2; - if (*p != '.' && *p != '-' && o[-1] != '.') - /* convert [foo][bar] to [bar] */ - while (o[-1] != '[' && o[-1] != '<') - o--; - else if (*p == '-' && *o != '.') - *--p = '.'; - } - else if (p[0] == '-' && o[-1] == '.' && - (p[1] == '.' || p[1] == ']' || p[1] == '>')) - /* flush .foo.- ; leave - if stopped by '[' or '<' */ - { - do - o--; - while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); - if (p[1] == '.') /* foo.-.bar ==> bar*/ - p += 2; - else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ - p++, o--; - /* else [foo.-] ==> [-] */ - } - else - { -#ifndef VMS4_4 - if (*p == '-' && - o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && - p[1] != ']' && p[1] != '>' && p[1] != '.') - *p = '_'; -#endif /* VMS4_4 */ - *o++ = *p++; - } -#else /* not VMS */ - if (*p != '/') - { - *o++ = *p++; - } - else if (!strncmp (p, "//", 2) -#ifdef APOLLO - /* // at start of filename is meaningful in Apollo system */ - && o != target -#endif /* APOLLO */ - ) - { - o = target; - p++; - } - else if (p[0] == '/' && p[1] == '.' && - (p[2] == '/' || p[2] == 0)) - p += 2; - else if (!strncmp (p, "/..", 3) - /* `/../' is the "superroot" on certain file systems. */ - && o != target - && (p[3] == '/' || p[3] == 0)) - { - while (o != target && *--o != '/') - ; -#ifdef APOLLO - if (o == target + 1 && o[-1] == '/' && o[0] == '/') - ++o; - else -#endif /* APOLLO */ - if (o == target && *o == '/') - ++o; - p += 3; - } - else - { - *o++ = *p++; - } -#endif /* not VMS */ - } - - return make_string (target, o - target); -} -#endif - -DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, - Ssubstitute_in_file_name, 1, 1, 0, - "Substitute environment variables referred to in FILENAME.\n\ -`$FOO' where FOO is an environment variable name means to substitute\n\ -the value of that variable. The variable name should be terminated\n\ -with a character not a letter, digit or underscore; otherwise, enclose\n\ -the entire variable name in braces.\n\ -If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ -On VMS, `$' substitution is not done; this function does little and only\n\ -duplicates what `expand-file-name' does.") - (string) - Lisp_Object string; -{ - unsigned char *nm; - - register unsigned char *s, *p, *o, *x, *endp; - unsigned char *target; - int total = 0; - int substituted = 0; - unsigned char *xnm; - - CHECK_STRING (string, 0); - - nm = XSTRING (string)->data; - endp = nm + XSTRING (string)->size; - - /* If /~ or // appears, discard everything through first slash. */ - - for (p = nm; p != endp; p++) - { - if ((p[0] == '~' || -#ifdef APOLLO - /* // at start of file name is meaningful in Apollo system */ - (p[0] == '/' && p - 1 != nm) -#else /* not APOLLO */ - p[0] == '/' -#endif /* not APOLLO */ - ) - && p != nm && -#ifdef VMS - (p[-1] == ':' || p[-1] == ']' || p[-1] == '>' || -#endif /* VMS */ - p[-1] == '/') -#ifdef VMS - ) -#endif /* VMS */ - { - nm = p; - substituted = 1; - } -#ifdef MSDOS - if (p[0] && p[1] == ':') - { - nm = p; - substituted = 1; - } -#endif /* MSDOS */ - } - -#ifdef VMS - return build_string (nm); -#else - - /* See if any variables are substituted into the string - and find the total length of their values in `total' */ - - for (p = nm; p != endp;) - if (*p != '$') - p++; - else - { - p++; - if (p == endp) - goto badsubst; - else if (*p == '$') - { - /* "$$" means a single "$" */ - p++; - total -= 1; - substituted = 1; - continue; - } - else if (*p == '{') - { - o = ++p; - while (p != endp && *p != '}') p++; - if (*p != '}') goto missingclose; - s = p; - } - else - { - o = p; - while (p != endp && (isalnum (*p) || *p == '_')) p++; - s = p; - } - - /* Copy out the variable name */ - target = (unsigned char *) alloca (s - o + 1); - strncpy (target, o, s - o); - target[s - o] = 0; -#ifdef MSDOS - strupr (target); /* $home == $HOME etc. */ -#endif - - /* Get variable value */ - o = (unsigned char *) egetenv (target); - if (!o) goto badvar; - total += strlen (o); - substituted = 1; - } - - if (!substituted) - return string; - - /* If substitution required, recopy the string and do it */ - /* Make space in stack frame for the new copy */ - xnm = (unsigned char *) alloca (XSTRING (string)->size + total + 1); - x = xnm; - - /* Copy the rest of the name through, replacing $ constructs with values */ - for (p = nm; *p;) - if (*p != '$') - *x++ = *p++; - else - { - p++; - if (p == endp) - goto badsubst; - else if (*p == '$') - { - *x++ = *p++; - continue; - } - else if (*p == '{') - { - o = ++p; - while (p != endp && *p != '}') p++; - if (*p != '}') goto missingclose; - s = p++; - } - else - { - o = p; - while (p != endp && (isalnum (*p) || *p == '_')) p++; - s = p; - } - - /* Copy out the variable name */ - target = (unsigned char *) alloca (s - o + 1); - strncpy (target, o, s - o); - target[s - o] = 0; -#ifdef MSDOS - strupr (target); /* $home == $HOME etc. */ -#endif - - /* Get variable value */ - o = (unsigned char *) egetenv (target); - if (!o) - goto badvar; - - strcpy (x, o); - x += strlen (o); - } - - *x = 0; - - /* If /~ or // appears, discard everything through first slash. */ - - for (p = xnm; p != x; p++) - if ((p[0] == '~' || -#ifdef APOLLO - /* // at start of file name is meaningful in Apollo system */ - (p[0] == '/' && p - 1 != xnm) -#else /* not APOLLO */ - p[0] == '/' -#endif /* not APOLLO */ - ) - && p != nm && p[-1] == '/') - xnm = p; -#ifdef MSDOS - else if (p[0] && p[1] == ':') - xnm = p; -#endif - - return make_string (xnm, x - xnm); - - badsubst: - error ("Bad format environment-variable substitution"); - missingclose: - error ("Missing \"}\" in environment-variable substitution"); - badvar: - error ("Substituting nonexistent environment variable \"%s\"", target); - - /* NOTREACHED */ -#endif /* not VMS */ -} - -/* A slightly faster and more convenient way to get - (directory-file-name (expand-file-name FOO)). */ - -Lisp_Object -expand_and_dir_to_file (filename, defdir) - Lisp_Object filename, defdir; -{ - register Lisp_Object abspath; - - abspath = Fexpand_file_name (filename, defdir); -#ifdef VMS - { - register int c = XSTRING (abspath)->data[XSTRING (abspath)->size - 1]; - if (c == ':' || c == ']' || c == '>') - abspath = Fdirectory_file_name (abspath); - } -#else - /* Remove final slash, if any (unless path is root). - stat behaves differently depending! */ - if (XSTRING (abspath)->size > 1 - && XSTRING (abspath)->data[XSTRING (abspath)->size - 1] == '/') - /* We cannot take shortcuts; they might be wrong for magic file names. */ - abspath = Fdirectory_file_name (abspath); -#endif - return abspath; -} - -barf_or_query_if_file_exists (absname, querystring, interactive) - Lisp_Object absname; - unsigned char *querystring; - int interactive; -{ - register Lisp_Object tem; - struct gcpro gcpro1; - - if (access (XSTRING (absname)->data, 4) >= 0) - { - if (! interactive) - Fsignal (Qfile_already_exists, - Fcons (build_string ("File already exists"), - Fcons (absname, Qnil))); - GCPRO1 (absname); - tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", - XSTRING (absname)->data, querystring)); - UNGCPRO; - if (NILP (tem)) - Fsignal (Qfile_already_exists, - Fcons (build_string ("File already exists"), - Fcons (absname, Qnil))); - } - return; -} - -DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, - "fCopy file: \nFCopy %s to file: \np\nP", - "Copy FILE to NEWNAME. Both args must be strings.\n\ -Signals a `file-already-exists' error if file NEWNAME already exists,\n\ -unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ -A number as third arg means request confirmation if NEWNAME already exists.\n\ -This is what happens in interactive use with M-x.\n\ -Fourth arg KEEP-TIME non-nil means give the new file the same\n\ -last-modified time as the old one. (This works on only some systems.)\n\ -A prefix arg makes KEEP-TIME non-nil.") - (filename, newname, ok_if_already_exists, keep_date) - Lisp_Object filename, newname, ok_if_already_exists, keep_date; -{ - int ifd, ofd, n; - char buf[16 * 1024]; - struct stat st; - Lisp_Object handler; - struct gcpro gcpro1, gcpro2; - int count = specpdl_ptr - specpdl; - Lisp_Object args[6]; - int input_file_statable_p; - - GCPRO2 (filename, newname); - CHECK_STRING (filename, 0); - CHECK_STRING (newname, 1); - filename = Fexpand_file_name (filename, Qnil); - newname = Fexpand_file_name (newname, Qnil); - - /* If the input file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); - /* Likewise for output file name. */ - if (NILP (handler)) - handler = Ffind_file_name_handler (newname); - if (!NILP (handler)) - RETURN_UNGCPRO (call5 (handler, Qcopy_file, filename, newname, - ok_if_already_exists, keep_date)); - - if (NILP (ok_if_already_exists) - || XTYPE (ok_if_already_exists) == Lisp_Int) - barf_or_query_if_file_exists (newname, "copy to it", - XTYPE (ok_if_already_exists) == Lisp_Int); - - ifd = open (XSTRING (filename)->data, 0); - if (ifd < 0) - report_file_error ("Opening input file", Fcons (filename, Qnil)); - - record_unwind_protect (close_file_unwind, make_number (ifd)); - - /* We can only copy regular files and symbolic links. Other files are not - copyable by us. */ - input_file_statable_p = (fstat (ifd, &st) >= 0); - -#if defined (S_ISREG) && defined (S_ISLNK) - if (input_file_statable_p) - { - if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) - { -#if defined (EISDIR) - /* Get a better looking error message. */ - errno = EISDIR; -#endif /* EISDIR */ - report_file_error ("Non-regular file", Fcons (filename, Qnil)); - } - } -#endif /* S_ISREG && S_ISLNK */ - -#ifdef VMS - /* Create the copy file with the same record format as the input file */ - ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); -#else -#ifdef MSDOS - /* System's default file type was set to binary by _fmode in emacs.c. */ - ofd = creat (XSTRING (newname)->data, S_IREAD | S_IWRITE); -#else /* not MSDOS */ - ofd = creat (XSTRING (newname)->data, 0666); -#endif /* not MSDOS */ -#endif /* VMS */ - if (ofd < 0) - report_file_error ("Opening output file", Fcons (newname, Qnil)); - - record_unwind_protect (close_file_unwind, make_number (ofd)); - - immediate_quit = 1; - QUIT; - while ((n = read (ifd, buf, sizeof buf)) > 0) - if (write (ofd, buf, n) != n) - report_file_error ("I/O error", Fcons (newname, Qnil)); - immediate_quit = 0; - - if (input_file_statable_p) - { - if (!NILP (keep_date)) - { - EMACS_TIME atime, mtime; - EMACS_SET_SECS_USECS (atime, st.st_atime, 0); - EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); - EMACS_SET_UTIMES (XSTRING (newname)->data, atime, mtime); - } -#ifdef APOLLO - if (!egetenv ("USE_DOMAIN_ACLS")) -#endif - chmod (XSTRING (newname)->data, st.st_mode & 07777); - } - - /* Discard the unwind protects. */ - specpdl_ptr = specpdl + count; - - close (ifd); - if (close (ofd) < 0) - report_file_error ("I/O error", Fcons (newname, Qnil)); - - UNGCPRO; - return Qnil; -} - -DEFUN ("make-directory-internal", Fmake_directory_internal, - Smake_directory_internal, 1, 1, 0, - "Create a directory. One argument, a file name string.") - (dirname) - Lisp_Object dirname; -{ - unsigned char *dir; - Lisp_Object handler; - - CHECK_STRING (dirname, 0); - dirname = Fexpand_file_name (dirname, Qnil); - - handler = Ffind_file_name_handler (dirname); - if (!NILP (handler)) - return call3 (handler, Qmake_directory, dirname, Qnil); - - dir = XSTRING (dirname)->data; - - if (mkdir (dir, 0777) != 0) - report_file_error ("Creating directory", Flist (1, &dirname)); - - return Qnil; -} - -DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", - "Delete a directory. One argument, a file name string.") - (dirname) - Lisp_Object dirname; -{ - unsigned char *dir; - Lisp_Object handler; - - CHECK_STRING (dirname, 0); - dirname = Fexpand_file_name (dirname, Qnil); - dir = XSTRING (dirname)->data; - - handler = Ffind_file_name_handler (dirname); - if (!NILP (handler)) - return call2 (handler, Qdelete_directory, dirname); - - if (rmdir (dir) != 0) - report_file_error ("Removing directory", Flist (1, &dirname)); - - return Qnil; -} - -DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", - "Delete specified file. One argument, a file name string.\n\ -If file has multiple names, it continues to exist with the other names.") - (filename) - Lisp_Object filename; -{ - Lisp_Object handler; - CHECK_STRING (filename, 0); - filename = Fexpand_file_name (filename, Qnil); - - handler = Ffind_file_name_handler (filename); - if (!NILP (handler)) - return call2 (handler, Qdelete_file, filename); - - if (0 > unlink (XSTRING (filename)->data)) - report_file_error ("Removing old name", Flist (1, &filename)); - return Qnil; -} - -DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, - "fRename file: \nFRename %s to file: \np", - "Rename FILE as NEWNAME. Both args strings.\n\ -If file has names other than FILE, it continues to have those names.\n\ -Signals a `file-already-exists' error if a file NEWNAME already exists\n\ -unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ -A number as third arg means request confirmation if NEWNAME already exists.\n\ -This is what happens in interactive use with M-x.") - (filename, newname, ok_if_already_exists) - Lisp_Object filename, newname, ok_if_already_exists; -{ -#ifdef NO_ARG_ARRAY - Lisp_Object args[2]; -#endif - Lisp_Object handler; - struct gcpro gcpro1, gcpro2; - - GCPRO2 (filename, newname); - CHECK_STRING (filename, 0); - CHECK_STRING (newname, 1); - filename = Fexpand_file_name (filename, Qnil); - newname = Fexpand_file_name (newname, Qnil); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); - if (NILP (handler)) - handler = Ffind_file_name_handler (newname); - if (!NILP (handler)) - RETURN_UNGCPRO (call4 (handler, Qrename_file, - filename, newname, ok_if_already_exists)); - - if (NILP (ok_if_already_exists) - || XTYPE (ok_if_already_exists) == Lisp_Int) - barf_or_query_if_file_exists (newname, "rename to it", - XTYPE (ok_if_already_exists) == Lisp_Int); -#ifndef BSD4_1 - if (0 > rename (XSTRING (filename)->data, XSTRING (newname)->data)) -#else - if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data) - || 0 > unlink (XSTRING (filename)->data)) -#endif - { - if (errno == EXDEV) - { - Fcopy_file (filename, newname, - /* We have already prompted if it was an integer, - so don't have copy-file prompt again. */ - NILP (ok_if_already_exists) ? Qnil : Qt, Qt); - Fdelete_file (filename); - } - else -#ifdef NO_ARG_ARRAY - { - args[0] = filename; - args[1] = newname; - report_file_error ("Renaming", Flist (2, args)); - } -#else - report_file_error ("Renaming", Flist (2, &filename)); -#endif - } - UNGCPRO; - return Qnil; -} - -DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, - "fAdd name to file: \nFName to add to %s: \np", - "Give FILE additional name NEWNAME. Both args strings.\n\ -Signals a `file-already-exists' error if a file NEWNAME already exists\n\ -unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ -A number as third arg means request confirmation if NEWNAME already exists.\n\ -This is what happens in interactive use with M-x.") - (filename, newname, ok_if_already_exists) - Lisp_Object filename, newname, ok_if_already_exists; -{ -#ifdef NO_ARG_ARRAY - Lisp_Object args[2]; -#endif - Lisp_Object handler; - struct gcpro gcpro1, gcpro2; - - GCPRO2 (filename, newname); - CHECK_STRING (filename, 0); - CHECK_STRING (newname, 1); - filename = Fexpand_file_name (filename, Qnil); - newname = Fexpand_file_name (newname, Qnil); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); - if (!NILP (handler)) - RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename, - newname, ok_if_already_exists)); - - if (NILP (ok_if_already_exists) - || XTYPE (ok_if_already_exists) == Lisp_Int) - barf_or_query_if_file_exists (newname, "make it a new name", - XTYPE (ok_if_already_exists) == Lisp_Int); - unlink (XSTRING (newname)->data); - if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data)) - { -#ifdef NO_ARG_ARRAY - args[0] = filename; - args[1] = newname; - report_file_error ("Adding new name", Flist (2, args)); -#else - report_file_error ("Adding new name", Flist (2, &filename)); -#endif - } - - UNGCPRO; - return Qnil; -} - -#ifdef S_IFLNK -DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, - "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", - "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ -Signals a `file-already-exists' error if a file NEWNAME already exists\n\ -unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ -A number as third arg means request confirmation if NEWNAME already exists.\n\ -This happens for interactive use with M-x.") - (filename, linkname, ok_if_already_exists) - Lisp_Object filename, linkname, ok_if_already_exists; -{ -#ifdef NO_ARG_ARRAY - Lisp_Object args[2]; -#endif - Lisp_Object handler; - struct gcpro gcpro1, gcpro2; - - GCPRO2 (filename, linkname); - CHECK_STRING (filename, 0); - CHECK_STRING (linkname, 1); - /* If the link target has a ~, we must expand it to get - a truly valid file name. Otherwise, do not expand; - we want to permit links to relative file names. */ - if (XSTRING (filename)->data[0] == '~') - filename = Fexpand_file_name (filename, Qnil); - linkname = Fexpand_file_name (linkname, Qnil); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); - if (!NILP (handler)) - RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, - linkname, ok_if_already_exists)); - - if (NILP (ok_if_already_exists) - || XTYPE (ok_if_already_exists) == Lisp_Int) - barf_or_query_if_file_exists (linkname, "make it a link", - XTYPE (ok_if_already_exists) == Lisp_Int); - if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) - { - /* If we didn't complain already, silently delete existing file. */ - if (errno == EEXIST) - { - unlink (XSTRING (linkname)->data); - if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) - return Qnil; - } - -#ifdef NO_ARG_ARRAY - args[0] = filename; - args[1] = linkname; - report_file_error ("Making symbolic link", Flist (2, args)); -#else - report_file_error ("Making symbolic link", Flist (2, &filename)); -#endif - } - UNGCPRO; - return Qnil; -} -#endif /* S_IFLNK */ - -#ifdef VMS - -DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, - 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", - "Define the job-wide logical name NAME to have the value STRING.\n\ -If STRING is nil or a null string, the logical name NAME is deleted.") - (varname, string) - Lisp_Object varname; - Lisp_Object string; -{ - CHECK_STRING (varname, 0); - if (NILP (string)) - delete_logical_name (XSTRING (varname)->data); - else - { - CHECK_STRING (string, 1); - - if (XSTRING (string)->size == 0) - delete_logical_name (XSTRING (varname)->data); - else - define_logical_name (XSTRING (varname)->data, XSTRING (string)->data); - } - - return string; -} -#endif /* VMS */ - -#ifdef HPUX_NET - -DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, - "Open a network connection to PATH using LOGIN as the login string.") - (path, login) - Lisp_Object path, login; -{ - int netresult; - - CHECK_STRING (path, 0); - CHECK_STRING (login, 0); - - netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); - - if (netresult == -1) - return Qnil; - else - return Qt; -} -#endif /* HPUX_NET */ - -DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, - 1, 1, 0, - "Return t if file FILENAME specifies an absolute path name.\n\ -On Unix, this is a name starting with a `/' or a `~'.") - (filename) - Lisp_Object filename; -{ - unsigned char *ptr; - - CHECK_STRING (filename, 0); - ptr = XSTRING (filename)->data; - if (*ptr == '/' || *ptr == '~' -#ifdef VMS -/* ??? This criterion is probably wrong for '<'. */ - || index (ptr, ':') || index (ptr, '<') - || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) - && ptr[1] != '.') -#endif /* VMS */ -#ifdef MSDOS - || (*ptr != 0 && ptr[1] == ':' && ptr[2] == '/') -#endif - ) - return Qt; - else - return Qnil; -} - -DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, - "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ -See also `file-readable-p' and `file-attributes'.") - (filename) - Lisp_Object filename; -{ - Lisp_Object abspath; - Lisp_Object handler; - - CHECK_STRING (filename, 0); - abspath = Fexpand_file_name (filename, Qnil); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (abspath); - if (!NILP (handler)) - return call2 (handler, Qfile_exists_p, abspath); - - return (access (XSTRING (abspath)->data, 0) >= 0) ? Qt : Qnil; -} - -DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, - "Return t if FILENAME can be executed by you.\n\ -For a directory, this means you can access files in that directory.") - (filename) - Lisp_Object filename; - -{ - Lisp_Object abspath; - Lisp_Object handler; - - CHECK_STRING (filename, 0); - abspath = Fexpand_file_name (filename, Qnil); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (abspath); - if (!NILP (handler)) - return call2 (handler, Qfile_executable_p, abspath); - - return (access (XSTRING (abspath)->data, 1) >= 0) ? Qt : Qnil; -} - -DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, - "Return t if file FILENAME exists and you can read it.\n\ -See also `file-exists-p' and `file-attributes'.") - (filename) - Lisp_Object filename; -{ - Lisp_Object abspath; - Lisp_Object handler; - - CHECK_STRING (filename, 0); - abspath = Fexpand_file_name (filename, Qnil); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (abspath); - if (!NILP (handler)) - return call2 (handler, Qfile_readable_p, abspath); - - return (access (XSTRING (abspath)->data, 4) >= 0) ? Qt : Qnil; -} - -DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, - "Return non-nil if file FILENAME is the name of a symbolic link.\n\ -The value is the name of the file to which it is linked.\n\ -Otherwise returns nil.") - (filename) - Lisp_Object filename; -{ -#ifdef S_IFLNK - char *buf; - int bufsize; - int valsize; - Lisp_Object val; - Lisp_Object handler; - - CHECK_STRING (filename, 0); - filename = Fexpand_file_name (filename, Qnil); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); - if (!NILP (handler)) - return call2 (handler, Qfile_symlink_p, filename); - - bufsize = 100; - while (1) - { - buf = (char *) xmalloc (bufsize); - bzero (buf, bufsize); - valsize = readlink (XSTRING (filename)->data, buf, bufsize); - if (valsize < bufsize) break; - /* Buffer was not long enough */ - xfree (buf); - bufsize *= 2; - } - if (valsize == -1) - { - xfree (buf); - return Qnil; - } - val = make_string (buf, valsize); - xfree (buf); - return val; -#else /* not S_IFLNK */ - return Qnil; -#endif /* not S_IFLNK */ -} - -#ifdef SOLARIS_BROKEN_ACCESS -/* In Solaris 2.1, the readonly-ness of the filesystem is not - considered by the access system call. This is Sun's bug, but we - still have to make Emacs work. */ - -#include <sys/statvfs.h> - -static int -ro_fsys (path) - char *path; -{ - struct statvfs statvfsb; - - if (statvfs(path, &statvfsb)) - return 1; /* error from statvfs, be conservative and say not wrtable */ - else - /* Otherwise, fsys is ro if bit is set. */ - return statvfsb.f_flag & ST_RDONLY; -} -#else -/* But on every other os, access has already done the right thing. */ -#define ro_fsys(path) 0 -#endif - -/* Having this before file-symlink-p mysteriously caused it to be forgotten - on the RT/PC. */ -DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, - "Return t if file FILENAME can be written or created by you.") - (filename) - Lisp_Object filename; -{ - Lisp_Object abspath, dir; - Lisp_Object handler; - - CHECK_STRING (filename, 0); - abspath = Fexpand_file_name (filename, Qnil); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (abspath); - if (!NILP (handler)) - return call2 (handler, Qfile_writable_p, abspath); - - if (access (XSTRING (abspath)->data, 0) >= 0) - return ((access (XSTRING (abspath)->data, 2) >= 0 - && ! ro_fsys ((char *) XSTRING (abspath)->data)) - ? Qt : Qnil); - dir = Ffile_name_directory (abspath); -#ifdef VMS - if (!NILP (dir)) - dir = Fdirectory_file_name (dir); -#endif /* VMS */ -#ifdef MSDOS - if (!NILP (dir)) - dir = Fdirectory_file_name (dir); -#endif /* MSDOS */ - return ((access (!NILP (dir) ? (char *) XSTRING (dir)->data : "", 2) >= 0 - && ! ro_fsys ((char *) XSTRING (dir)->data)) - ? Qt : Qnil); -} - -DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, - "Return t if file FILENAME is the name of a directory as a file.\n\ -A directory name spec may be given instead; then the value is t\n\ -if the directory so specified exists and really is a directory.") - (filename) - Lisp_Object filename; -{ - register Lisp_Object abspath; - struct stat st; - Lisp_Object handler; - - abspath = expand_and_dir_to_file (filename, current_buffer->directory); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (abspath); - if (!NILP (handler)) - return call2 (handler, Qfile_directory_p, abspath); - - if (stat (XSTRING (abspath)->data, &st) < 0) - return Qnil; - return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; -} - -DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, - "Return t if file FILENAME is the name of a directory as a file,\n\ -and files in that directory can be opened by you. In order to use a\n\ -directory as a buffer's current directory, this predicate must return true.\n\ -A directory name spec may be given instead; then the value is t\n\ -if the directory so specified exists and really is a readable and\n\ -searchable directory.") - (filename) - Lisp_Object filename; -{ - Lisp_Object handler; - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); - if (!NILP (handler)) - return call2 (handler, Qfile_accessible_directory_p, filename); - - if (NILP (Ffile_directory_p (filename)) - || NILP (Ffile_executable_p (filename))) - return Qnil; - else - return Qt; -} - -DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, - "Return mode bits of FILE, as an integer.") - (filename) - Lisp_Object filename; -{ - Lisp_Object abspath; - struct stat st; - Lisp_Object handler; - - abspath = expand_and_dir_to_file (filename, current_buffer->directory); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (abspath); - if (!NILP (handler)) - return call2 (handler, Qfile_modes, abspath); - - if (stat (XSTRING (abspath)->data, &st) < 0) - return Qnil; -#ifdef MSDOS - { - int len; - char *suffix; - if (S_ISREG (st.st_mode) - && (len = XSTRING (abspath)->size) >= 5 - && (stricmp ((suffix = XSTRING (abspath)->data + len-4), ".com") == 0 - || stricmp (suffix, ".exe") == 0 - || stricmp (suffix, ".bat") == 0)) - st.st_mode |= S_IEXEC; - } -#endif /* MSDOS */ - - return make_number (st.st_mode & 07777); -} - -DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, - "Set mode bits of FILE to MODE (an integer).\n\ -Only the 12 low bits of MODE are used.") - (filename, mode) - Lisp_Object filename, mode; -{ - Lisp_Object abspath; - Lisp_Object handler; - - abspath = Fexpand_file_name (filename, current_buffer->directory); - CHECK_NUMBER (mode, 1); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (abspath); - if (!NILP (handler)) - return call3 (handler, Qset_file_modes, abspath, mode); - -#ifndef APOLLO - if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) - report_file_error ("Doing chmod", Fcons (abspath, Qnil)); -#else /* APOLLO */ - if (!egetenv ("USE_DOMAIN_ACLS")) - { - struct stat st; - struct timeval tvp[2]; - - /* chmod on apollo also change the file's modtime; need to save the - modtime and then restore it. */ - if (stat (XSTRING (abspath)->data, &st) < 0) - { - report_file_error ("Doing chmod", Fcons (abspath, Qnil)); - return (Qnil); - } - - if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) - report_file_error ("Doing chmod", Fcons (abspath, Qnil)); - - /* reset the old accessed and modified times. */ - tvp[0].tv_sec = st.st_atime + 1; /* +1 due to an Apollo roundoff bug */ - tvp[0].tv_usec = 0; - tvp[1].tv_sec = st.st_mtime + 1; /* +1 due to an Apollo roundoff bug */ - tvp[1].tv_usec = 0; - - if (utimes (XSTRING (abspath)->data, tvp) < 0) - report_file_error ("Doing utimes", Fcons (abspath, Qnil)); - } -#endif /* APOLLO */ - - return Qnil; -} - -DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, - "Set the file permission bits for newly created files.\n\ -The argument MODE should be an integer; only the low 9 bits are used.\n\ -This setting is inherited by subprocesses.") - (mode) - Lisp_Object mode; -{ - CHECK_NUMBER (mode, 0); - - umask ((~ XINT (mode)) & 0777); - - return Qnil; -} - -DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, - "Return the default file protection for created files.\n\ -The value is an integer.") - () -{ - int realmask; - Lisp_Object value; - - realmask = umask (0); - umask (realmask); - - XSET (value, Lisp_Int, (~ realmask) & 0777); - return value; -} - -#ifdef unix - -DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", - "Tell Unix to finish all pending disk updates.") - () -{ - sync (); - return Qnil; -} - -#endif /* unix */ - -DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, - "Return t if file FILE1 is newer than file FILE2.\n\ -If FILE1 does not exist, the answer is nil;\n\ -otherwise, if FILE2 does not exist, the answer is t.") - (file1, file2) - Lisp_Object file1, file2; -{ - Lisp_Object abspath1, abspath2; - struct stat st; - int mtime1; - Lisp_Object handler; - struct gcpro gcpro1, gcpro2; - - CHECK_STRING (file1, 0); - CHECK_STRING (file2, 0); - - abspath1 = Qnil; - GCPRO2 (abspath1, file2); - abspath1 = expand_and_dir_to_file (file1, current_buffer->directory); - abspath2 = expand_and_dir_to_file (file2, current_buffer->directory); - UNGCPRO; - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (abspath1); - if (NILP (handler)) - handler = Ffind_file_name_handler (abspath2); - if (!NILP (handler)) - return call3 (handler, Qfile_newer_than_file_p, abspath1, abspath2); - - if (stat (XSTRING (abspath1)->data, &st) < 0) - return Qnil; - - mtime1 = st.st_mtime; - - if (stat (XSTRING (abspath2)->data, &st) < 0) - return Qt; - - return (mtime1 > st.st_mtime) ? Qt : Qnil; -} - -#ifdef MSDOS -Lisp_Object Qfind_buffer_file_type; -#endif - -DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, - 1, 5, 0, - "Insert contents of file FILENAME after point.\n\ -Returns list of absolute file name and length of data inserted.\n\ -If second argument VISIT is non-nil, the buffer's visited filename\n\ -and last save file modtime are set, and it is marked unmodified.\n\ -If visiting and the file does not exist, visiting is completed\n\ -before the error is signaled.\n\n\ -The optional third and fourth arguments BEG and END\n\ -specify what portion of the file to insert.\n\ -If VISIT is non-nil, BEG and END must be nil.\n\ -If optional fifth argument REPLACE is non-nil,\n\ -it means replace the current buffer contents (in the accessible portion)\n\ -with the file contents. This is better than simply deleting and inserting\n\ -the whole thing because (1) it preserves some marker positions\n\ -and (2) it puts less data in the undo list.") - (filename, visit, beg, end, replace) - Lisp_Object filename, visit, beg, end, replace; -{ - struct stat st; - register int fd; - register int inserted = 0; - register int how_much; - int count = specpdl_ptr - specpdl; - struct gcpro gcpro1, gcpro2; - Lisp_Object handler, val, insval; - Lisp_Object p; - int total; - - val = Qnil; - p = Qnil; - - GCPRO2 (filename, p); - if (!NILP (current_buffer->read_only)) - Fbarf_if_buffer_read_only(); - - CHECK_STRING (filename, 0); - filename = Fexpand_file_name (filename, Qnil); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); - if (!NILP (handler)) - { - val = call6 (handler, Qinsert_file_contents, filename, - visit, beg, end, replace); - goto handled; - } - - fd = -1; - -#ifndef APOLLO - if (stat (XSTRING (filename)->data, &st) < 0 - || (fd = open (XSTRING (filename)->data, 0)) < 0) -#else - if ((fd = open (XSTRING (filename)->data, 0)) < 0 - || fstat (fd, &st) < 0) -#endif /* not APOLLO */ - { - if (fd >= 0) close (fd); - if (NILP (visit)) - report_file_error ("Opening input file", Fcons (filename, Qnil)); - st.st_mtime = -1; - how_much = 0; - goto notfound; - } - - /* Replacement should preserve point as it preserves markers. */ - if (!NILP (replace)) - record_unwind_protect (restore_point_unwind, Fpoint_marker ()); - - record_unwind_protect (close_file_unwind, make_number (fd)); - -#ifdef S_IFSOCK - /* This code will need to be changed in order to work on named - pipes, and it's probably just not worth it. So we should at - least signal an error. */ - if ((st.st_mode & S_IFMT) == S_IFSOCK) - Fsignal (Qfile_error, - Fcons (build_string ("reading from named pipe"), - Fcons (filename, Qnil))); -#endif - - /* Supposedly happens on VMS. */ - if (st.st_size < 0) - error ("File size is negative"); - - if (!NILP (beg) || !NILP (end)) - if (!NILP (visit)) - error ("Attempt to visit less than an entire file"); - - if (!NILP (beg)) - CHECK_NUMBER (beg, 0); - else - XFASTINT (beg) = 0; - - if (!NILP (end)) - CHECK_NUMBER (end, 0); - else - { - XSETINT (end, st.st_size); - if (XINT (end) != st.st_size) - error ("maximum buffer size exceeded"); - } - - /* If requested, replace the accessible part of the buffer - with the file contents. Avoid replacing text at the - beginning or end of the buffer that matches the file contents; - that preserves markers pointing to the unchanged parts. */ - if (!NILP (replace)) - { - char buffer[1 << 14]; - int same_at_start = BEGV; - int same_at_end = ZV; - int overlap; - - immediate_quit = 1; - QUIT; - /* Count how many chars at the start of the file - match the text at the beginning of the buffer. */ - while (1) - { - int nread, bufpos; - - nread = read (fd, buffer, sizeof buffer); - if (nread < 0) - error ("IO error reading %s: %s", - XSTRING (filename)->data, strerror (errno)); - else if (nread == 0) - break; - bufpos = 0; - while (bufpos < nread && same_at_start < ZV - && FETCH_CHAR (same_at_start) == buffer[bufpos]) - same_at_start++, bufpos++; - /* If we found a discrepancy, stop the scan. - Otherwise loop around and scan the next bufferfull. */ - if (bufpos != nread) - break; - } - immediate_quit = 0; - /* If the file matches the buffer completely, - there's no need to replace anything. */ - if (same_at_start == ZV) - { - close (fd); - specpdl_ptr--; - goto handled; - } - immediate_quit = 1; - QUIT; - /* Count how many chars at the end of the file - match the text at the end of the buffer. */ - while (1) - { - int total_read, nread, bufpos, curpos, trial; - - /* At what file position are we now scanning? */ - curpos = st.st_size - (ZV - same_at_end); - /* How much can we scan in the next step? */ - trial = min (curpos, sizeof buffer); - if (lseek (fd, curpos - trial, 0) < 0) - report_file_error ("Setting file position", - Fcons (filename, Qnil)); - - total_read = 0; - while (total_read < trial) - { - nread = read (fd, buffer + total_read, trial - total_read); - if (nread <= 0) - error ("IO error reading %s: %s", - XSTRING (filename)->data, strerror (errno)); - total_read += nread; - } - /* Scan this bufferfull from the end, comparing with - the Emacs buffer. */ - bufpos = total_read; - /* Compare with same_at_start to avoid counting some buffer text - as matching both at the file's beginning and at the end. */ - while (bufpos > 0 && same_at_end > same_at_start - && FETCH_CHAR (same_at_end - 1) == buffer[bufpos - 1]) - same_at_end--, bufpos--; - /* If we found a discrepancy, stop the scan. - Otherwise loop around and scan the preceding bufferfull. */ - if (bufpos != 0) - break; - } - immediate_quit = 0; - - /* Don't try to reuse the same piece of text twice. */ - overlap = same_at_start - BEGV - (same_at_end + st.st_size - ZV); - if (overlap > 0) - same_at_end += overlap; - - /* Arrange to read only the nonmatching middle part of the file. */ - XFASTINT (beg) = same_at_start - BEGV; - XFASTINT (end) = st.st_size - (ZV - same_at_end); - - del_range_1 (same_at_start, same_at_end, 0); - /* Insert from the file at the proper position. */ - SET_PT (same_at_start); - } - - total = XINT (end) - XINT (beg); - - { - register Lisp_Object temp; - - /* Make sure point-max won't overflow after this insertion. */ - XSET (temp, Lisp_Int, total); - if (total != XINT (temp)) - error ("maximum buffer size exceeded"); - } - - if (NILP (visit) && total > 0) - prepare_to_modify_buffer (point, point); - - move_gap (point); - if (GAP_SIZE < total) - make_gap (total - GAP_SIZE); - - if (XINT (beg) != 0 || !NILP (replace)) - { - if (lseek (fd, XINT (beg), 0) < 0) - report_file_error ("Setting file position", Fcons (filename, Qnil)); - } - - how_much = 0; - while (inserted < total) - { - int try = min (total - inserted, 64 << 10); - int this; - - /* Allow quitting out of the actual I/O. */ - immediate_quit = 1; - QUIT; - this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, try); - immediate_quit = 0; - - if (this <= 0) - { - how_much = this; - break; - } - - GPT += this; - GAP_SIZE -= this; - ZV += this; - Z += this; - inserted += this; - } - -#ifdef MSDOS - /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */ - /* Determine file type from name and remove LFs from CR-LFs if the file - is deemed to be a text file. */ - { - struct gcpro gcpro1; - Lisp_Object code; - code = Qnil; - GCPRO1 (filename); - code = call1 (Qfind_buffer_file_type, filename); - UNGCPRO; - if (XTYPE (code) == Lisp_Int) - XFASTINT (current_buffer->buffer_file_type) = XFASTINT (code); - if (XFASTINT (current_buffer->buffer_file_type) == 0) - { - int reduced_size - = inserted - crlf_to_lf (inserted, &FETCH_CHAR (point - 1) + 1); - ZV -= reduced_size; - Z -= reduced_size; - GPT -= reduced_size; - GAP_SIZE += reduced_size; - inserted -= reduced_size; - } - } -#endif - - if (inserted > 0) - { - record_insert (point, inserted); - - /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ - offset_intervals (current_buffer, point, inserted); - MODIFF++; - } - - close (fd); - - /* Discard the unwind protect for closing the file. */ - specpdl_ptr--; - - if (how_much < 0) - error ("IO error reading %s: %s", - XSTRING (filename)->data, strerror (errno)); - - notfound: - handled: - - if (!NILP (visit)) - { - if (!EQ (current_buffer->undo_list, Qt)) - current_buffer->undo_list = Qnil; -#ifdef APOLLO - stat (XSTRING (filename)->data, &st); -#endif - - if (NILP (handler)) - { - current_buffer->modtime = st.st_mtime; - current_buffer->filename = filename; - } - - current_buffer->save_modified = MODIFF; - current_buffer->auto_save_modified = MODIFF; - XFASTINT (current_buffer->save_length) = Z - BEG; -#ifdef CLASH_DETECTION - if (NILP (handler)) - { - if (!NILP (current_buffer->filename)) - unlock_file (current_buffer->filename); - unlock_file (filename); - } -#endif /* CLASH_DETECTION */ - /* If visiting nonexistent file, return nil. */ - if (current_buffer->modtime == -1) - report_file_error ("Opening input file", Fcons (filename, Qnil)); - } - - if (inserted > 0 && NILP (visit) && total > 0) - signal_after_change (point, 0, inserted); - - if (inserted > 0) - { - p = Vafter_insert_file_functions; - while (!NILP (p)) - { - insval = call1 (Fcar (p), make_number (inserted)); - if (!NILP (insval)) - { - CHECK_NUMBER (insval, 0); - inserted = XFASTINT (insval); - } - QUIT; - p = Fcdr (p); - } - } - - if (NILP (val)) - val = Fcons (filename, - Fcons (make_number (inserted), - Qnil)); - - RETURN_UNGCPRO (unbind_to (count, val)); -} - -static Lisp_Object build_annotations (); - -DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 5, - "r\nFWrite region to file: ", - "Write current region into specified file.\n\ -When called from a program, takes three arguments:\n\ -START, END and FILENAME. START and END are buffer positions.\n\ -Optional fourth argument APPEND if non-nil means\n\ - append to existing file contents (if any).\n\ -Optional fifth argument VISIT if t means\n\ - set the last-save-file-modtime of buffer to this file's modtime\n\ - and mark buffer not modified.\n\ -If VISIT is a string, it is a second file name;\n\ - the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ - VISIT is also the file name to lock and unlock for clash detection.\n\ -If VISIT is neither t nor nil nor a string,\n\ - that means do not print the \"Wrote file\" message.\n\ -Kludgy feature: if START is a string, then that string is written\n\ -to the file, instead of any buffer contents, and END is ignored.") - (start, end, filename, append, visit) - Lisp_Object start, end, filename, append, visit; -{ - register int desc; - int failure; - int save_errno; - unsigned char *fn; - struct stat st; - int tem; - int count = specpdl_ptr - specpdl; -#ifdef VMS - unsigned char *fname = 0; /* If non-0, original filename (must rename) */ -#endif /* VMS */ - Lisp_Object handler; - Lisp_Object visit_file; - Lisp_Object annotations; - int visiting, quietly; - struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; -#ifdef MSDOS - int buffer_file_type - = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY; -#endif - - if (!NILP (start) && !STRINGP (start)) - validate_region (&start, &end); - - filename = Fexpand_file_name (filename, Qnil); - if (STRINGP (visit)) - visit_file = Fexpand_file_name (visit, Qnil); - else - visit_file = filename; - - visiting = (EQ (visit, Qt) || STRINGP (visit)); - quietly = !NILP (visit); - - annotations = Qnil; - - GCPRO4 (start, filename, annotations, visit_file); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); - /* If FILENAME has no handler, see if VISIT has one. */ - if (NILP (handler) && XTYPE (visit) == Lisp_String) - handler = Ffind_file_name_handler (visit); - - if (!NILP (handler)) - { - Lisp_Object val; - val = call6 (handler, Qwrite_region, start, end, - filename, append, visit); - - if (visiting) - { - current_buffer->save_modified = MODIFF; - XFASTINT (current_buffer->save_length) = Z - BEG; - current_buffer->filename = visit_file; - } - UNGCPRO; - return val; - } - - /* Special kludge to simplify auto-saving. */ - if (NILP (start)) - { - XFASTINT (start) = BEG; - XFASTINT (end) = Z; - } - - annotations = build_annotations (start, end); - -#ifdef CLASH_DETECTION - if (!auto_saving) - lock_file (visit_file); -#endif /* CLASH_DETECTION */ - - fn = XSTRING (filename)->data; - desc = -1; - if (!NILP (append)) -#ifdef MSDOS - desc = open (fn, O_WRONLY | buffer_file_type); -#else - desc = open (fn, O_WRONLY); -#endif - - if (desc < 0) -#ifdef VMS - if (auto_saving) /* Overwrite any previous version of autosave file */ - { - vms_truncate (fn); /* if fn exists, truncate to zero length */ - desc = open (fn, O_RDWR); - if (desc < 0) - desc = creat_copy_attrs (STRINGP (current_buffer->filename) - ? XSTRING (current_buffer->filename)->data : 0, - fn); - } - else /* Write to temporary name and rename if no errors */ - { - Lisp_Object temp_name; - temp_name = Ffile_name_directory (filename); - - if (!NILP (temp_name)) - { - temp_name = Fmake_temp_name (concat2 (temp_name, - build_string ("$$SAVE$$"))); - fname = XSTRING (filename)->data; - fn = XSTRING (temp_name)->data; - desc = creat_copy_attrs (fname, fn); - if (desc < 0) - { - /* If we can't open the temporary file, try creating a new - version of the original file. VMS "creat" creates a - new version rather than truncating an existing file. */ - fn = fname; - fname = 0; - desc = creat (fn, 0666); -#if 0 /* This can clobber an existing file and fail to replace it, - if the user runs out of space. */ - if (desc < 0) - { - /* We can't make a new version; - try to truncate and rewrite existing version if any. */ - vms_truncate (fn); - desc = open (fn, O_RDWR); - } -#endif - } - } - else - desc = creat (fn, 0666); - } -#else /* not VMS */ -#ifdef MSDOS - desc = open (fn, - O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type, - S_IREAD | S_IWRITE); -#else /* not MSDOS */ - desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); -#endif /* not MSDOS */ -#endif /* not VMS */ - - UNGCPRO; - - if (desc < 0) - { -#ifdef CLASH_DETECTION - save_errno = errno; - if (!auto_saving) unlock_file (visit_file); - errno = save_errno; -#endif /* CLASH_DETECTION */ - report_file_error ("Opening output file", Fcons (filename, Qnil)); - } - - record_unwind_protect (close_file_unwind, make_number (desc)); - - if (!NILP (append)) - if (lseek (desc, 0, 2) < 0) - { -#ifdef CLASH_DETECTION - if (!auto_saving) unlock_file (visit_file); -#endif /* CLASH_DETECTION */ - report_file_error ("Lseek error", Fcons (filename, Qnil)); - } - -#ifdef VMS -/* - * Kludge Warning: The VMS C RTL likes to insert carriage returns - * if we do writes that don't end with a carriage return. Furthermore - * it cannot handle writes of more then 16K. The modified - * version of "sys_write" in SYSDEP.C (see comment there) copes with - * this EXCEPT for the last record (iff it doesn't end with a carriage - * return). This implies that if your buffer doesn't end with a carriage - * return, you get one free... tough. However it also means that if - * we make two calls to sys_write (a la the following code) you can - * get one at the gap as well. The easiest way to fix this (honest) - * is to move the gap to the next newline (or the end of the buffer). - * Thus this change. - * - * Yech! - */ - if (GPT > BEG && GPT_ADDR[-1] != '\n') - move_gap (find_next_newline (GPT, 1)); -#endif - - failure = 0; - immediate_quit = 1; - - if (STRINGP (start)) - { - failure = 0 > a_write (desc, XSTRING (start)->data, - XSTRING (start)->size, 0, &annotations); - save_errno = errno; - } - else if (XINT (start) != XINT (end)) - { - int nwritten = 0; - if (XINT (start) < GPT) - { - register int end1 = XINT (end); - tem = XINT (start); - failure = 0 > a_write (desc, &FETCH_CHAR (tem), - min (GPT, end1) - tem, tem, &annotations); - nwritten += min (GPT, end1) - tem; - save_errno = errno; - } - - if (XINT (end) > GPT && !failure) - { - tem = XINT (start); - tem = max (tem, GPT); - failure = 0 > a_write (desc, &FETCH_CHAR (tem), XINT (end) - tem, - tem, &annotations); - nwritten += XINT (end) - tem; - save_errno = errno; - } - - if (nwritten == 0) - { - /* If file was empty, still need to write the annotations */ - failure = 0 > a_write (desc, "", 0, XINT (start), &annotations); - save_errno = errno; - } - } - - immediate_quit = 0; - -#ifdef HAVE_FSYNC - /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). - Disk full in NFS may be reported here. */ - /* mib says that closing the file will try to write as fast as NFS can do - it, and that means the fsync here is not crucial for autosave files. */ - if (!auto_saving && fsync (desc) < 0) - failure = 1, save_errno = errno; -#endif - - /* Spurious "file has changed on disk" warnings have been - observed on Suns as well. - It seems that `close' can change the modtime, under nfs. - - (This has supposedly been fixed in Sunos 4, - but who knows about all the other machines with NFS?) */ -#if 0 - - /* On VMS and APOLLO, must do the stat after the close - since closing changes the modtime. */ -#ifndef VMS -#ifndef APOLLO - /* Recall that #if defined does not work on VMS. */ -#define FOO - fstat (desc, &st); -#endif -#endif -#endif - - /* NFS can report a write failure now. */ - if (close (desc) < 0) - failure = 1, save_errno = errno; - -#ifdef VMS - /* If we wrote to a temporary name and had no errors, rename to real name. */ - if (fname) - { - if (!failure) - failure = (rename (fn, fname) != 0), save_errno = errno; - fn = fname; - } -#endif /* VMS */ - -#ifndef FOO - stat (fn, &st); -#endif - /* Discard the unwind protect */ - specpdl_ptr = specpdl + count; - -#ifdef CLASH_DETECTION - if (!auto_saving) - unlock_file (visit_file); -#endif /* CLASH_DETECTION */ - - /* Do this before reporting IO error - to avoid a "file has changed on disk" warning on - next attempt to save. */ - if (visiting) - current_buffer->modtime = st.st_mtime; - - if (failure) - error ("IO error writing %s: %s", fn, strerror (save_errno)); - - if (visiting) - { - current_buffer->save_modified = MODIFF; - XFASTINT (current_buffer->save_length) = Z - BEG; - current_buffer->filename = visit_file; - } - else if (quietly) - return Qnil; - - if (!auto_saving) - message ("Wrote %s", XSTRING (visit_file)->data); - - return Qnil; -} - -Lisp_Object merge (); - -DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, - "Return t if (car A) is numerically less than (car B).") - (a, b) - Lisp_Object a, b; -{ - return Flss (Fcar (a), Fcar (b)); -} - -/* Build the complete list of annotations appropriate for writing out - the text between START and END, by calling all the functions in - write-region-annotate-functions and merging the lists they return. */ - -static Lisp_Object -build_annotations (start, end) - Lisp_Object start, end; -{ - Lisp_Object annotations; - Lisp_Object p, res; - struct gcpro gcpro1, gcpro2; - - annotations = Qnil; - p = Vwrite_region_annotate_functions; - GCPRO2 (annotations, p); - while (!NILP (p)) - { - res = call2 (Fcar (p), start, end); - Flength (res); /* Check basic validity of return value */ - annotations = merge (annotations, res, Qcar_less_than_car); - p = Fcdr (p); - } - UNGCPRO; - return annotations; -} - -/* Write to descriptor DESC the LEN characters starting at ADDR, - assuming they start at position POS in the buffer. - Intersperse with them the annotations from *ANNOT - (those which fall within the range of positions POS to POS + LEN), - each at its appropriate position. - - Modify *ANNOT by discarding elements as we output them. - The return value is negative in case of system call failure. */ - -int -a_write (desc, addr, len, pos, annot) - int desc; - register char *addr; - register int len; - int pos; - Lisp_Object *annot; -{ - Lisp_Object tem; - int nextpos; - int lastpos = pos + len; - - while (1) - { - tem = Fcar_safe (Fcar (*annot)); - if (INTEGERP (tem) && XINT (tem) >= pos && XFASTINT (tem) <= lastpos) - nextpos = XFASTINT (tem); - else - return e_write (desc, addr, lastpos - pos); - if (nextpos > pos) - { - if (0 > e_write (desc, addr, nextpos - pos)) - return -1; - addr += nextpos - pos; - pos = nextpos; - } - tem = Fcdr (Fcar (*annot)); - if (STRINGP (tem)) - { - if (0 > e_write (desc, XSTRING (tem)->data, XSTRING (tem)->size)) - return -1; - } - *annot = Fcdr (*annot); - } -} - -int -e_write (desc, addr, len) - int desc; - register char *addr; - register int len; -{ - char buf[16 * 1024]; - register char *p, *end; - - if (!EQ (current_buffer->selective_display, Qt)) - return write (desc, addr, len) - len; - else - { - p = buf; - end = p + sizeof buf; - while (len--) - { - if (p == end) - { - if (write (desc, buf, sizeof buf) != sizeof buf) - return -1; - p = buf; - } - *p = *addr++; - if (*p++ == '\015') - p[-1] = '\n'; - } - if (p != buf) - if (write (desc, buf, p - buf) != p - buf) - return -1; - } - return 0; -} - -DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, - Sverify_visited_file_modtime, 1, 1, 0, - "Return t if last mod time of BUF's visited file matches what BUF records.\n\ -This means that the file has not been changed since it was visited or saved.") - (buf) - Lisp_Object buf; -{ - struct buffer *b; - struct stat st; - Lisp_Object handler; - - CHECK_BUFFER (buf, 0); - b = XBUFFER (buf); - - if (XTYPE (b->filename) != Lisp_String) return Qt; - if (b->modtime == 0) return Qt; - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (b->filename); - if (!NILP (handler)) - return call2 (handler, Qverify_visited_file_modtime, buf); - - if (stat (XSTRING (b->filename)->data, &st) < 0) - { - /* If the file doesn't exist now and didn't exist before, - we say that it isn't modified, provided the error is a tame one. */ - if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) - st.st_mtime = -1; - else - st.st_mtime = 0; - } - if (st.st_mtime == b->modtime - /* If both are positive, accept them if they are off by one second. */ - || (st.st_mtime > 0 && b->modtime > 0 - && (st.st_mtime == b->modtime + 1 - || st.st_mtime == b->modtime - 1))) - return Qt; - return Qnil; -} - -DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, - Sclear_visited_file_modtime, 0, 0, 0, - "Clear out records of last mod time of visited file.\n\ -Next attempt to save will certainly not complain of a discrepancy.") - () -{ - current_buffer->modtime = 0; - return Qnil; -} - -DEFUN ("visited-file-modtime", Fvisited_file_modtime, - Svisited_file_modtime, 0, 0, 0, - "Return the current buffer's recorded visited file modification time.\n\ -The value is a list of the form (HIGH . LOW), like the time values\n\ -that `file-attributes' returns.") - () -{ - return long_to_cons (current_buffer->modtime); -} - -DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, - Sset_visited_file_modtime, 0, 1, 0, - "Update buffer's recorded modification time from the visited file's time.\n\ -Useful if the buffer was not read from the file normally\n\ -or if the file itself has been changed for some known benign reason.\n\ -An argument specifies the modification time value to use\n\ -\(instead of that of the visited file), in the form of a list\n\ -\(HIGH . LOW) or (HIGH LOW).") - (time_list) - Lisp_Object time_list; -{ - if (!NILP (time_list)) - current_buffer->modtime = cons_to_long (time_list); - else - { - register Lisp_Object filename; - struct stat st; - Lisp_Object handler; - - filename = Fexpand_file_name (current_buffer->filename, Qnil); - - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); - if (!NILP (handler)) - /* The handler can find the file name the same way we did. */ - return call2 (handler, Qset_visited_file_modtime, Qnil); - else if (stat (XSTRING (filename)->data, &st) >= 0) - current_buffer->modtime = st.st_mtime; - } - - return Qnil; -} - -Lisp_Object -auto_save_error () -{ - unsigned char *name = XSTRING (current_buffer->name)->data; - - ring_bell (); - message ("Autosaving...error for %s", name); - Fsleep_for (make_number (1), Qnil); - message ("Autosaving...error!for %s", name); - Fsleep_for (make_number (1), Qnil); - message ("Autosaving...error for %s", name); - Fsleep_for (make_number (1), Qnil); - return Qnil; -} - -Lisp_Object -auto_save_1 () -{ - unsigned char *fn; - struct stat st; - - /* Get visited file's mode to become the auto save file's mode. */ - if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) - /* But make sure we can overwrite it later! */ - auto_save_mode_bits = st.st_mode | 0600; - else - auto_save_mode_bits = 0666; - - return - Fwrite_region (Qnil, Qnil, - current_buffer->auto_save_file_name, - Qnil, Qlambda); -} - -DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", - "Auto-save all buffers that need it.\n\ -This is all buffers that have auto-saving enabled\n\ -and are changed since last auto-saved.\n\ -Auto-saving writes the buffer into a file\n\ -so that your editing is not lost if the system crashes.\n\ -This file is not the file you visited; that changes only when you save.\n\ -Normally we run the normal hook `auto-save-hook' before saving.\n\n\ -Non-nil first argument means do not print any message if successful.\n\ -Non-nil second argument means save only current buffer.") - (no_message, current_only) - Lisp_Object no_message, current_only; -{ - struct buffer *old = current_buffer, *b; - Lisp_Object tail, buf; - int auto_saved = 0; - char *omessage = echo_area_glyphs; - int omessage_length = echo_area_glyphs_length; - extern int minibuf_level; - int do_handled_files; - Lisp_Object oquit; - - /* Ordinarily don't quit within this function, - but don't make it impossible to quit (in case we get hung in I/O). */ - oquit = Vquit_flag; - Vquit_flag = Qnil; - - /* No GCPRO needed, because (when it matters) all Lisp_Object variables - point to non-strings reached from Vbuffer_alist. */ - - auto_saving = 1; - if (minibuf_level) - no_message = Qt; - - if (!NILP (Vrun_hooks)) - call1 (Vrun_hooks, intern ("auto-save-hook")); - - /* First, save all files which don't have handlers. If Emacs is - crashing, the handlers may tweak what is causing Emacs to crash - in the first place, and it would be a shame if Emacs failed to - autosave perfectly ordinary files because it couldn't handle some - ange-ftp'd file. */ - for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) - for (tail = Vbuffer_alist; XGCTYPE (tail) == Lisp_Cons; - tail = XCONS (tail)->cdr) - { - buf = XCONS (XCONS (tail)->car)->cdr; - b = XBUFFER (buf); - - if (!NILP (current_only) - && b != current_buffer) - continue; - - /* Check for auto save enabled - and file changed since last auto save - and file changed since last real save. */ - if (XTYPE (b->auto_save_file_name) == Lisp_String - && b->save_modified < BUF_MODIFF (b) - && b->auto_save_modified < BUF_MODIFF (b) - /* -1 means we've turned off autosaving for a while--see below. */ - && XINT (b->save_length) >= 0 - && (do_handled_files - || NILP (Ffind_file_name_handler (b->auto_save_file_name)))) - { - EMACS_TIME before_time, after_time; - - EMACS_GET_TIME (before_time); - - /* If we had a failure, don't try again for 20 minutes. */ - if (b->auto_save_failure_time >= 0 - && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) - continue; - - if ((XFASTINT (b->save_length) * 10 - > (BUF_Z (b) - BUF_BEG (b)) * 13) - /* A short file is likely to change a large fraction; - spare the user annoying messages. */ - && XFASTINT (b->save_length) > 5000 - /* These messages are frequent and annoying for `*mail*'. */ - && !EQ (b->filename, Qnil) - && NILP (no_message)) - { - /* It has shrunk too much; turn off auto-saving here. */ - message ("Buffer %s has shrunk a lot; auto save turned off there", - XSTRING (b->name)->data); - /* Turn off auto-saving until there's a real save, - and prevent any more warnings. */ - XSET (b->save_length, Lisp_Int, -1); - Fsleep_for (make_number (1), Qnil); - continue; - } - set_buffer_internal (b); - if (!auto_saved && NILP (no_message)) - message1 ("Auto-saving..."); - internal_condition_case (auto_save_1, Qt, auto_save_error); - auto_saved++; - b->auto_save_modified = BUF_MODIFF (b); - XFASTINT (current_buffer->save_length) = Z - BEG; - set_buffer_internal (old); - - EMACS_GET_TIME (after_time); - - /* If auto-save took more than 60 seconds, - assume it was an NFS failure that got a timeout. */ - if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) - b->auto_save_failure_time = EMACS_SECS (after_time); - } - } - - /* Prevent another auto save till enough input events come in. */ - record_auto_save (); - - if (auto_saved && NILP (no_message)) - { - if (omessage) - message2 (omessage, omessage_length); - else - message1 ("Auto-saving...done"); - } - - Vquit_flag = oquit; - - auto_saving = 0; - return Qnil; -} - -DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, - Sset_buffer_auto_saved, 0, 0, 0, - "Mark current buffer as auto-saved with its current text.\n\ -No auto-save file will be written until the buffer changes again.") - () -{ - current_buffer->auto_save_modified = MODIFF; - XFASTINT (current_buffer->save_length) = Z - BEG; - current_buffer->auto_save_failure_time = -1; - return Qnil; -} - -DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, - Sclear_buffer_auto_save_failure, 0, 0, 0, - "Clear any record of a recent auto-save failure in the current buffer.") - () -{ - current_buffer->auto_save_failure_time = -1; - return Qnil; -} - -DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, - 0, 0, 0, - "Return t if buffer has been auto-saved since last read in or saved.") - () -{ - return (current_buffer->save_modified < current_buffer->auto_save_modified) ? Qt : Qnil; -} - -/* Reading and completing file names */ -extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); - -/* In the string VAL, change each $ to $$ and return the result. */ - -static Lisp_Object -double_dollars (val) - Lisp_Object val; -{ - register unsigned char *old, *new; - register int n; - int osize, count; - - osize = XSTRING (val)->size; - /* Quote "$" as "$$" to get it past substitute-in-file-name */ - for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) - if (*old++ == '$') count++; - if (count > 0) - { - old = XSTRING (val)->data; - val = Fmake_string (make_number (osize + count), make_number (0)); - new = XSTRING (val)->data; - for (n = osize; n > 0; n--) - if (*old != '$') - *new++ = *old++; - else - { - *new++ = '$'; - *new++ = '$'; - old++; - } - } - return val; -} - -DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, - 3, 3, 0, - "Internal subroutine for read-file-name. Do not call this.") - (string, dir, action) - Lisp_Object string, dir, action; - /* action is nil for complete, t for return list of completions, - lambda for verify final value */ -{ - Lisp_Object name, specdir, realdir, val, orig_string; - int changed; - struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; - - realdir = dir; - name = string; - orig_string = Qnil; - specdir = Qnil; - changed = 0; - /* No need to protect ACTION--we only compare it with t and nil. */ - GCPRO4 (string, realdir, name, specdir); - - if (XSTRING (string)->size == 0) - { - if (EQ (action, Qlambda)) - { - UNGCPRO; - return Qnil; - } - } - else - { - orig_string = string; - string = Fsubstitute_in_file_name (string); - changed = NILP (Fstring_equal (string, orig_string)); - name = Ffile_name_nondirectory (string); - val = Ffile_name_directory (string); - if (! NILP (val)) - realdir = Fexpand_file_name (val, realdir); - } - - if (NILP (action)) - { - specdir = Ffile_name_directory (string); - val = Ffile_name_completion (name, realdir); - UNGCPRO; - if (XTYPE (val) != Lisp_String) - { - if (changed) - return string; - return val; - } - - if (!NILP (specdir)) - val = concat2 (specdir, val); -#ifndef VMS - return double_dollars (val); -#else /* not VMS */ - return val; -#endif /* not VMS */ - } - UNGCPRO; - - if (EQ (action, Qt)) - return Ffile_name_all_completions (name, realdir); - /* Only other case actually used is ACTION = lambda */ -#ifdef VMS - /* Supposedly this helps commands such as `cd' that read directory names, - but can someone explain how it helps them? -- RMS */ - if (XSTRING (name)->size == 0) - return Qt; -#endif /* VMS */ - return Ffile_exists_p (string); -} - -DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, - "Read file name, prompting with PROMPT and completing in directory DIR.\n\ -Value is not expanded---you must call `expand-file-name' yourself.\n\ -Default name to DEFAULT if user enters a null string.\n\ - (If DEFAULT is omitted, the visited file name is used.)\n\ -Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ - Non-nil and non-t means also require confirmation after completion.\n\ -Fifth arg INITIAL specifies text to start with.\n\ -DIR defaults to current buffer's directory default.") - (prompt, dir, defalt, mustmatch, initial) - Lisp_Object prompt, dir, defalt, mustmatch, initial; -{ - Lisp_Object val, insdef, insdef1, tem; - struct gcpro gcpro1, gcpro2; - register char *homedir; - int count; - - if (NILP (dir)) - dir = current_buffer->directory; - if (NILP (defalt)) - defalt = current_buffer->filename; - - /* If dir starts with user's homedir, change that to ~. */ - homedir = (char *) egetenv ("HOME"); - if (homedir != 0 - && XTYPE (dir) == Lisp_String - && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) - && XSTRING (dir)->data[strlen (homedir)] == '/') - { - dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, - XSTRING (dir)->size - strlen (homedir) + 1); - XSTRING (dir)->data[0] = '~'; - } - - if (insert_default_directory) - { - insdef = dir; - if (!NILP (initial)) - { - Lisp_Object args[2], pos; - - args[0] = insdef; - args[1] = initial; - insdef = Fconcat (2, args); - pos = make_number (XSTRING (double_dollars (dir))->size); - insdef1 = Fcons (double_dollars (insdef), pos); - } - else - insdef1 = double_dollars (insdef); - } - else if (!NILP (initial)) - { - insdef = initial; - insdef1 = Fcons (double_dollars (insdef), 0); - } - else - insdef = Qnil, insdef1 = Qnil; - -#ifdef VMS - count = specpdl_ptr - specpdl; - specbind (intern ("completion-ignore-case"), Qt); -#endif - - GCPRO2 (insdef, defalt); - val = Fcompleting_read (prompt, intern ("read-file-name-internal"), - dir, mustmatch, insdef1, - Qfile_name_history); - -#ifdef VMS - unbind_to (count, Qnil); -#endif - - UNGCPRO; - if (NILP (val)) - error ("No file name specified"); - tem = Fstring_equal (val, insdef); - if (!NILP (tem) && !NILP (defalt)) - return defalt; - if (XSTRING (val)->size == 0 && NILP (insdef)) - { - if (!NILP (defalt)) - return defalt; - else - error ("No default file name"); - } - return Fsubstitute_in_file_name (val); -} - -#if 0 /* Old version */ -DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, - /* Don't confuse make-docfile by having two doc strings for this function. - make-docfile does not pay attention to #if, for good reason! */ - 0) - (prompt, dir, defalt, mustmatch, initial) - Lisp_Object prompt, dir, defalt, mustmatch, initial; -{ - Lisp_Object val, insdef, tem; - struct gcpro gcpro1, gcpro2; - register char *homedir; - int count; - - if (NILP (dir)) - dir = current_buffer->directory; - if (NILP (defalt)) - defalt = current_buffer->filename; - - /* If dir starts with user's homedir, change that to ~. */ - homedir = (char *) egetenv ("HOME"); - if (homedir != 0 - && XTYPE (dir) == Lisp_String - && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) - && XSTRING (dir)->data[strlen (homedir)] == '/') - { - dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, - XSTRING (dir)->size - strlen (homedir) + 1); - XSTRING (dir)->data[0] = '~'; - } - - if (!NILP (initial)) - insdef = initial; - else if (insert_default_directory) - insdef = dir; - else - insdef = build_string (""); - -#ifdef VMS - count = specpdl_ptr - specpdl; - specbind (intern ("completion-ignore-case"), Qt); -#endif - - GCPRO2 (insdef, defalt); - val = Fcompleting_read (prompt, intern ("read-file-name-internal"), - dir, mustmatch, - insert_default_directory ? insdef : Qnil, - Qfile_name_history); - -#ifdef VMS - unbind_to (count, Qnil); -#endif - - UNGCPRO; - if (NILP (val)) - error ("No file name specified"); - tem = Fstring_equal (val, insdef); - if (!NILP (tem) && !NILP (defalt)) - return defalt; - return Fsubstitute_in_file_name (val); -} -#endif /* Old version */ - -syms_of_fileio () -{ - Qexpand_file_name = intern ("expand-file-name"); - Qdirectory_file_name = intern ("directory-file-name"); - Qfile_name_directory = intern ("file-name-directory"); - Qfile_name_nondirectory = intern ("file-name-nondirectory"); - Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); - Qfile_name_as_directory = intern ("file-name-as-directory"); - Qcopy_file = intern ("copy-file"); - Qmake_directory = intern ("make-directory"); - Qdelete_directory = intern ("delete-directory"); - Qdelete_file = intern ("delete-file"); - Qrename_file = intern ("rename-file"); - Qadd_name_to_file = intern ("add-name-to-file"); - Qmake_symbolic_link = intern ("make-symbolic-link"); - Qfile_exists_p = intern ("file-exists-p"); - Qfile_executable_p = intern ("file-executable-p"); - Qfile_readable_p = intern ("file-readable-p"); - Qfile_symlink_p = intern ("file-symlink-p"); - Qfile_writable_p = intern ("file-writable-p"); - Qfile_directory_p = intern ("file-directory-p"); - Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); - Qfile_modes = intern ("file-modes"); - Qset_file_modes = intern ("set-file-modes"); - Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); - Qinsert_file_contents = intern ("insert-file-contents"); - Qwrite_region = intern ("write-region"); - Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); - Qset_visited_file_modtime = intern ("set-visited-file-modtime"); - - staticpro (&Qexpand_file_name); - staticpro (&Qdirectory_file_name); - staticpro (&Qfile_name_directory); - staticpro (&Qfile_name_nondirectory); - staticpro (&Qunhandled_file_name_directory); - staticpro (&Qfile_name_as_directory); - staticpro (&Qcopy_file); - staticpro (&Qmake_directory); - staticpro (&Qdelete_directory); - staticpro (&Qdelete_file); - staticpro (&Qrename_file); - staticpro (&Qadd_name_to_file); - staticpro (&Qmake_symbolic_link); - staticpro (&Qfile_exists_p); - staticpro (&Qfile_executable_p); - staticpro (&Qfile_readable_p); - staticpro (&Qfile_symlink_p); - staticpro (&Qfile_writable_p); - staticpro (&Qfile_directory_p); - staticpro (&Qfile_accessible_directory_p); - staticpro (&Qfile_modes); - staticpro (&Qset_file_modes); - staticpro (&Qfile_newer_than_file_p); - staticpro (&Qinsert_file_contents); - staticpro (&Qwrite_region); - staticpro (&Qverify_visited_file_modtime); - - Qfile_name_history = intern ("file-name-history"); - Fset (Qfile_name_history, Qnil); - staticpro (&Qfile_name_history); - - Qfile_error = intern ("file-error"); - staticpro (&Qfile_error); - Qfile_already_exists = intern("file-already-exists"); - staticpro (&Qfile_already_exists); - -#ifdef MSDOS - Qfind_buffer_file_type = intern ("find-buffer-file-type"); - staticpro (&Qfind_buffer_file_type); -#endif - - Qcar_less_than_car = intern ("car-less-than-car"); - staticpro (&Qcar_less_than_car); - - Fput (Qfile_error, Qerror_conditions, - Fcons (Qfile_error, Fcons (Qerror, Qnil))); - Fput (Qfile_error, Qerror_message, - build_string ("File error")); - - Fput (Qfile_already_exists, Qerror_conditions, - Fcons (Qfile_already_exists, - Fcons (Qfile_error, Fcons (Qerror, Qnil)))); - Fput (Qfile_already_exists, Qerror_message, - build_string ("File already exists")); - - DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, - "*Non-nil means when reading a filename start with default dir in minibuffer."); - insert_default_directory = 1; - - DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, - "*Non-nil means write new files with record format `stmlf'.\n\ -nil means use format `var'. This variable is meaningful only on VMS."); - vms_stmlf_recfm = 0; - - DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, - "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ -If a file name matches REGEXP, then all I/O on that file is done by calling\n\ -HANDLER.\n\ -\n\ -The first argument given to HANDLER is the name of the I/O primitive\n\ -to be handled; the remaining arguments are the arguments that were\n\ -passed to that primitive. For example, if you do\n\ - (file-exists-p FILENAME)\n\ -and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ - (funcall HANDLER 'file-exists-p FILENAME)\n\ -The function `find-file-name-handler' checks this list for a handler\n\ -for its argument."); - Vfile_name_handler_alist = Qnil; - - DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, - "A list of functions to be called at the end of `insert-file-contents'.\n\ -Each is passed one argument, the number of bytes inserted. It should return\n\ -the new byte count, and leave point the same. If `insert-file-contents' is\n\ -intercepted by a handler from `file-name-handler-alist', that handler is\n\ -responsible for calling the after-insert-file-functions if appropriate."); - Vafter_insert_file_functions = Qnil; - - DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, - "A list of functions to be called at the start of `write-region'.\n\ -Each is passed two arguments, START and END as for `write-region'. It should\n\ -return a list of pairs (POSITION . STRING) of strings to be effectively\n\ -inserted at the specified positions of the file being written (1 means to\n\ -insert before the first byte written). The POSITIONs must be sorted into\n\ -increasing order. If there are several functions in the list, the several\n\ -lists are merged destructively."); - Vwrite_region_annotate_functions = Qnil; - - DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, - "A list of file names for which handlers should not be used."); - Vinhibit_file_name_handlers = Qnil; - - defsubr (&Sfind_file_name_handler); - defsubr (&Sfile_name_directory); - defsubr (&Sfile_name_nondirectory); - defsubr (&Sunhandled_file_name_directory); - defsubr (&Sfile_name_as_directory); - defsubr (&Sdirectory_file_name); - defsubr (&Smake_temp_name); - defsubr (&Sexpand_file_name); - defsubr (&Ssubstitute_in_file_name); - defsubr (&Scopy_file); - defsubr (&Smake_directory_internal); - defsubr (&Sdelete_directory); - defsubr (&Sdelete_file); - defsubr (&Srename_file); - defsubr (&Sadd_name_to_file); -#ifdef S_IFLNK - defsubr (&Smake_symbolic_link); -#endif /* S_IFLNK */ -#ifdef VMS - defsubr (&Sdefine_logical_name); -#endif /* VMS */ -#ifdef HPUX_NET - defsubr (&Ssysnetunam); -#endif /* HPUX_NET */ - defsubr (&Sfile_name_absolute_p); - defsubr (&Sfile_exists_p); - defsubr (&Sfile_executable_p); - defsubr (&Sfile_readable_p); - defsubr (&Sfile_writable_p); - defsubr (&Sfile_symlink_p); - defsubr (&Sfile_directory_p); - defsubr (&Sfile_accessible_directory_p); - defsubr (&Sfile_modes); - defsubr (&Sset_file_modes); - defsubr (&Sset_default_file_modes); - defsubr (&Sdefault_file_modes); - defsubr (&Sfile_newer_than_file_p); - defsubr (&Sinsert_file_contents); - defsubr (&Swrite_region); - defsubr (&Scar_less_than_car); - defsubr (&Sverify_visited_file_modtime); - defsubr (&Sclear_visited_file_modtime); - defsubr (&Svisited_file_modtime); - defsubr (&Sset_visited_file_modtime); - defsubr (&Sdo_auto_save); - defsubr (&Sset_buffer_auto_saved); - defsubr (&Sclear_buffer_auto_save_failure); - defsubr (&Srecent_auto_save_p); - - defsubr (&Sread_file_name_internal); - defsubr (&Sread_file_name); - -#ifdef unix - defsubr (&Sunix_sync); -#endif -} |