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Diffstat (limited to 'src/mac.c')
| -rw-r--r-- | src/mac.c | 2758 |
1 files changed, 2758 insertions, 0 deletions
diff --git a/src/mac.c b/src/mac.c new file mode 100644 index 00000000000..4e6ee4bb8ff --- /dev/null +++ b/src/mac.c @@ -0,0 +1,2758 @@ +/* Unix emulation routines for GNU Emacs on the Mac OS. + Copyright (C) 2000, 2001 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, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* Contributed by Andrew Choi (akochoi@mac.com). */ + +#include <config.h> + +#include <stdio.h> +#include <errno.h> +#include <utime.h> +#include <dirent.h> +#include <sys/stat.h> +#include <string.h> +#include <pwd.h> +#include <sys/param.h> +#if __MWERKS__ +#include <unistd.h> +#endif + +#ifdef MAC_OSX +#undef mktime +#undef DEBUG +#undef free +#undef malloc +#undef realloc +#include <Carbon/Carbon.h> +#undef free +#define free unexec_free +#undef malloc +#define malloc unexec_malloc +#undef realloc +#define realloc unexec_realloc +#else /* not MAC_OSX */ +#include <Files.h> +#include <MacTypes.h> +#include <TextUtils.h> +#include <Folders.h> +#include <Resources.h> +#include <Aliases.h> +#include <FixMath.h> +#include <Timer.h> +#include <OSA.h> +#include <AppleScript.h> +#include <Scrap.h> +#endif /* not MAC_OSX */ + +#include "lisp.h" +#include "process.h" +#include "sysselect.h" +#include "systime.h" + +Lisp_Object QCLIPBOARD; + +/* An instance of the AppleScript component. */ +static ComponentInstance as_scripting_component; +/* The single script context used for all script executions. */ +static OSAID as_script_context; + + +/* When converting from Mac to Unix pathnames, /'s in folder names are + converted to :'s. This function, used in copying folder names, + performs a strncat and converts all character a to b in the copy of + the string s2 appended to the end of s1. */ + +void +string_cat_and_replace (char *s1, const char *s2, int n, char a, char b) +{ + int l1 = strlen (s1); + int l2 = strlen (s2); + char *p = s1 + l1; + int i; + + strncat (s1, s2, n); + for (i = 0; i < l2; i++) + { + if (*p == a) + *p = b; + p++; + } +} + + +/* Convert a Mac pathname to Posix form. A Mac full pathname is one + that does not begin with a ':' and contains at least one ':'. A Mac + full pathname causes an '/' to be prepended to the Posix pathname. + The algorithm for the rest of the pathname is as follows: + For each segment between two ':', + if it is non-null, copy as is and then add a '/' at the end, + otherwise, insert a "../" into the Posix pathname. + Returns 1 if successful; 0 if fails. */ + +int +mac_to_posix_pathname (const char *mfn, char *ufn, int ufnbuflen) +{ + const char *p, *q, *pe; + + strcpy (ufn, ""); + + if (*mfn == '\0') + return 1; + + p = strchr (mfn, ':'); + if (p != 0 && p != mfn) /* full pathname */ + strcat (ufn, "/"); + + p = mfn; + if (*p == ':') + p++; + + pe = mfn + strlen (mfn); + while (p < pe) + { + q = strchr (p, ':'); + if (q) + { + if (q == p) + { /* two consecutive ':' */ + if (strlen (ufn) + 3 >= ufnbuflen) + return 0; + strcat (ufn, "../"); + } + else + { + if (strlen (ufn) + (q - p) + 1 >= ufnbuflen) + return 0; + string_cat_and_replace (ufn, p, q - p, '/', ':'); + strcat (ufn, "/"); + } + p = q + 1; + } + else + { + if (strlen (ufn) + (pe - p) >= ufnbuflen) + return 0; + string_cat_and_replace (ufn, p, pe - p, '/', ':'); + /* no separator for last one */ + p = pe; + } + } + + return 1; +} + + +extern char *get_temp_dir_name (); + + +/* Convert a Posix pathname to Mac form. Approximately reverse of the + above in algorithm. */ + +int +posix_to_mac_pathname (const char *ufn, char *mfn, int mfnbuflen) +{ + const char *p, *q, *pe; + char expanded_pathname[MAXPATHLEN+1]; + + strcpy (mfn, ""); + + if (*ufn == '\0') + return 1; + + p = ufn; + + /* Check for and handle volume names. Last comparison: strangely + somewhere "/.emacs" is passed. A temporary fix for now. */ + if (*p == '/' && strchr (p+1, '/') == NULL && strcmp (p, "/.emacs") != 0) + { + if (strlen (p) + 1 > mfnbuflen) + return 0; + strcpy (mfn, p+1); + strcat (mfn, ":"); + return 1; + } + + /* expand to emacs dir found by init_emacs_passwd_dir */ + if (strncmp (p, "~emacs/", 7) == 0) + { + struct passwd *pw = getpwnam ("emacs"); + p += 7; + if (strlen (pw->pw_dir) + strlen (p) > MAXPATHLEN) + return 0; + strcpy (expanded_pathname, pw->pw_dir); + strcat (expanded_pathname, p); + p = expanded_pathname; + /* now p points to the pathname with emacs dir prefix */ + } + else if (strncmp (p, "/tmp/", 5) == 0) + { + char *t = get_temp_dir_name (); + p += 5; + if (strlen (t) + strlen (p) > MAXPATHLEN) + return 0; + strcpy (expanded_pathname, t); + strcat (expanded_pathname, p); + p = expanded_pathname; + /* now p points to the pathname with emacs dir prefix */ + } + else if (*p != '/') /* relative pathname */ + strcat (mfn, ":"); + + if (*p == '/') + p++; + + pe = p + strlen (p); + while (p < pe) + { + q = strchr (p, '/'); + if (q) + { + if (q - p == 2 && *p == '.' && *(p+1) == '.') + { + if (strlen (mfn) + 1 >= mfnbuflen) + return 0; + strcat (mfn, ":"); + } + else + { + if (strlen (mfn) + (q - p) + 1 >= mfnbuflen) + return 0; + string_cat_and_replace (mfn, p, q - p, ':', '/'); + strcat (mfn, ":"); + } + p = q + 1; + } + else + { + if (strlen (mfn) + (pe - p) >= mfnbuflen) + return 0; + string_cat_and_replace (mfn, p, pe - p, ':', '/'); + p = pe; + } + } + + return 1; +} + +#ifndef MAC_OSX + +/* The following functions with "sys_" prefix are stubs to Unix + functions that have already been implemented by CW or MPW. The + calls to them in Emacs source course are #define'd to call the sys_ + versions by the header files s-mac.h. In these stubs pathnames are + converted between their Unix and Mac forms. */ + + +/* Unix epoch is Jan 1, 1970 while Mac epoch is Jan 1, 1904: 66 years + + 17 leap days. These are for adjusting time values returned by + MacOS Toolbox functions. */ + +#define MAC_UNIX_EPOCH_DIFF ((365L * 66 + 17) * 24 * 60 * 60) + +#ifdef __MWERKS__ +#if __MSL__ < 0x6000 +/* CW Pro 5 epoch is Jan 1, 1900 (aaarghhhhh!); remember, 1900 is not + a leap year! This is for adjusting time_t values returned by MSL + functions. */ +#define CW_OR_MPW_UNIX_EPOCH_DIFF ((365L * 70 + 17) * 24 * 60 * 60) +#else /* __MSL__ >= 0x6000 */ +/* CW changes Pro 6 to follow Unix! */ +#define CW_OR_MPW_UNIX_EPOCH_DIFF ((365L * 66 + 17) * 24 * 60 * 60) +#endif /* __MSL__ >= 0x6000 */ +#elif __MRC__ +/* MPW library functions follow Unix (confused?). */ +#define CW_OR_MPW_UNIX_EPOCH_DIFF ((365L * 66 + 17) * 24 * 60 * 60) +#else /* not __MRC__ */ +You lose!!! +#endif /* not __MRC__ */ + + +/* Define our own stat function for both MrC and CW. The reason for + doing this: "stat" is both the name of a struct and function name: + can't use the same trick like that for sys_open, sys_close, etc. to + redirect Emacs's calls to our own version that converts Unix style + filenames to Mac style filename because all sorts of compilation + errors will be generated if stat is #define'd to be sys_stat. */ + +int +stat_noalias (const char *path, struct stat *buf) +{ + char mac_pathname[MAXPATHLEN+1]; + CInfoPBRec cipb; + + if (posix_to_mac_pathname (path, mac_pathname, MAXPATHLEN+1) == 0) + return -1; + + c2pstr (mac_pathname); + cipb.hFileInfo.ioNamePtr = mac_pathname; + cipb.hFileInfo.ioVRefNum = 0; + cipb.hFileInfo.ioDirID = 0; + cipb.hFileInfo.ioFDirIndex = 0; + /* set to 0 to get information about specific dir or file */ + + errno = PBGetCatInfo (&cipb, false); + if (errno == -43) /* -43: fnfErr defined in Errors.h */ + errno = ENOENT; + if (errno != noErr) + return -1; + + if (cipb.hFileInfo.ioFlAttrib & 0x10) /* bit 4 = 1 for directories */ + { + buf->st_mode = S_IFDIR | S_IREAD | S_IEXEC; + + if (!(cipb.hFileInfo.ioFlAttrib & 0x1)) + buf->st_mode |= S_IWRITE; /* bit 1 = 1 for locked files/directories */ + buf->st_ino = cipb.dirInfo.ioDrDirID; + buf->st_dev = cipb.dirInfo.ioVRefNum; + buf->st_size = cipb.dirInfo.ioDrNmFls; + /* size of dir = number of files and dirs */ + buf->st_atime + = buf->st_mtime + = cipb.dirInfo.ioDrMdDat - MAC_UNIX_EPOCH_DIFF; + buf->st_ctime = cipb.dirInfo.ioDrCrDat - MAC_UNIX_EPOCH_DIFF; + } + else + { + buf->st_mode = S_IFREG | S_IREAD; + if (!(cipb.hFileInfo.ioFlAttrib & 0x1)) + buf->st_mode |= S_IWRITE; /* bit 1 = 1 for locked files/directories */ + if (cipb.hFileInfo.ioFlFndrInfo.fdType == 'APPL') + buf->st_mode |= S_IEXEC; + buf->st_ino = cipb.hFileInfo.ioDirID; + buf->st_dev = cipb.hFileInfo.ioVRefNum; + buf->st_size = cipb.hFileInfo.ioFlLgLen; + buf->st_atime + = buf->st_mtime + = cipb.hFileInfo.ioFlMdDat - MAC_UNIX_EPOCH_DIFF; + buf->st_ctime = cipb.hFileInfo.ioFlCrDat - MAC_UNIX_EPOCH_DIFF; + } + + if (cipb.hFileInfo.ioFlFndrInfo.fdFlags & 0x8000) + { + /* identify alias files as symlinks */ + buf->st_mode &= ~S_IFREG; + buf->st_mode |= S_IFLNK; + } + + buf->st_nlink = 1; + buf->st_uid = getuid (); + buf->st_gid = getgid (); + buf->st_rdev = 0; + + return 0; +} + + +int +lstat (const char *path, struct stat *buf) +{ + int result; + char true_pathname[MAXPATHLEN+1]; + + /* Try looking for the file without resolving aliases first. */ + if ((result = stat_noalias (path, buf)) >= 0) + return result; + + if (find_true_pathname (path, true_pathname, MAXPATHLEN+1) == -1) + return -1; + + return stat_noalias (true_pathname, buf); +} + + +int +stat (const char *path, struct stat *sb) +{ + int result; + char true_pathname[MAXPATHLEN+1], fully_resolved_name[MAXPATHLEN+1]; + int len; + + if ((result = stat_noalias (path, sb)) >= 0 && + ! (sb->st_mode & S_IFLNK)) + return result; + + if (find_true_pathname (path, true_pathname, MAXPATHLEN+1) == -1) + return -1; + + len = readlink (true_pathname, fully_resolved_name, MAXPATHLEN); + if (len > -1) + { + fully_resolved_name[len] = '\0'; + /* in fact our readlink terminates strings */ + return lstat (fully_resolved_name, sb); + } + else + return lstat (true_pathname, sb); +} + + +#if __MRC__ +/* CW defines fstat in stat.mac.c while MPW does not provide this + function. Without the information of how to get from a file + descriptor in MPW StdCLib to a Mac OS file spec, it should be hard + to implement this function. Fortunately, there is only one place + where this function is called in our configuration: in fileio.c, + where only the st_dev and st_ino fields are used to determine + whether two fildes point to different i-nodes to prevent copying + a file onto itself equal. What we have here probably needs + improvement. */ + +int +fstat (int fildes, struct stat *buf) +{ + buf->st_dev = 0; + buf->st_ino = fildes; + buf->st_mode = S_IFREG; /* added by T.I. for the copy-file */ + return 0; /* success */ +} +#endif /* __MRC__ */ + + +int +mkdir (const char *dirname, int mode) +{ +#pragma unused(mode) + + HFileParam hfpb; + char true_pathname[MAXPATHLEN+1], mac_pathname[MAXPATHLEN+1]; + + if (find_true_pathname (dirname, true_pathname, MAXPATHLEN+1) == -1) + return -1; + + if (posix_to_mac_pathname (true_pathname, mac_pathname, MAXPATHLEN+1) == 0) + return -1; + + c2pstr (mac_pathname); + hfpb.ioNamePtr = mac_pathname; + hfpb.ioVRefNum = 0; /* ignored unless name is invalid */ + hfpb.ioDirID = 0; /* parent is the root */ + + errno = PBDirCreate ((HParmBlkPtr) &hfpb, false); + /* just return the Mac OSErr code for now */ + return errno == noErr ? 0 : -1; +} + + +#undef rmdir +sys_rmdir (const char *dirname) +{ + HFileParam hfpb; + char mac_pathname[MAXPATHLEN+1]; + + if (posix_to_mac_pathname (dirname, mac_pathname, MAXPATHLEN+1) == 0) + return -1; + + c2pstr (mac_pathname); + hfpb.ioNamePtr = mac_pathname; + hfpb.ioVRefNum = 0; /* ignored unless name is invalid */ + hfpb.ioDirID = 0; /* parent is the root */ + + errno = PBHDelete ((HParmBlkPtr) &hfpb, false); + return errno == noErr ? 0 : -1; +} + + +#ifdef __MRC__ +/* No implementation yet. */ +int +execvp (const char *path, ...) +{ + return -1; +} +#endif /* __MRC__ */ + + +int +utime (const char *path, const struct utimbuf *times) +{ + char true_pathname[MAXPATHLEN+1], fully_resolved_name[MAXPATHLEN+1]; + int len; + char mac_pathname[MAXPATHLEN+1]; + CInfoPBRec cipb; + + if (find_true_pathname (path, true_pathname, MAXPATHLEN+1) == -1) + return -1; + + len = readlink (true_pathname, fully_resolved_name, MAXPATHLEN); + if (len > -1) + fully_resolved_name[len] = '\0'; + else + strcpy (fully_resolved_name, true_pathname); + + if (!posix_to_mac_pathname (fully_resolved_name, mac_pathname, MAXPATHLEN+1)) + return -1; + + c2pstr (mac_pathname); + cipb.hFileInfo.ioNamePtr = mac_pathname; + cipb.hFileInfo.ioVRefNum = 0; + cipb.hFileInfo.ioDirID = 0; + cipb.hFileInfo.ioFDirIndex = 0; + /* set to 0 to get information about specific dir or file */ + + errno = PBGetCatInfo (&cipb, false); + if (errno != noErr) + return -1; + + if (cipb.hFileInfo.ioFlAttrib & 0x10) /* bit 4 = 1 for directories */ + { + if (times) + cipb.dirInfo.ioDrMdDat = times->modtime + MAC_UNIX_EPOCH_DIFF; + else + GetDateTime (&cipb.dirInfo.ioDrMdDat); + } + else + { + if (times) + cipb.hFileInfo.ioFlMdDat = times->modtime + MAC_UNIX_EPOCH_DIFF; + else + GetDateTime (&cipb.hFileInfo.ioFlMdDat); + } + + errno = PBSetCatInfo (&cipb, false); + return errno == noErr ? 0 : -1; +} + + +#ifndef F_OK +#define F_OK 0 +#endif +#ifndef X_OK +#define X_OK 1 +#endif +#ifndef W_OK +#define W_OK 2 +#endif + +/* Like stat, but test for access mode in hfpb.ioFlAttrib */ +int +access (const char *path, int mode) +{ + char true_pathname[MAXPATHLEN+1], fully_resolved_name[MAXPATHLEN+1]; + int len; + char mac_pathname[MAXPATHLEN+1]; + CInfoPBRec cipb; + + if (find_true_pathname (path, true_pathname, MAXPATHLEN+1) == -1) + return -1; + + len = readlink (true_pathname, fully_resolved_name, MAXPATHLEN); + if (len > -1) + fully_resolved_name[len] = '\0'; + else + strcpy (fully_resolved_name, true_pathname); + + if (!posix_to_mac_pathname (fully_resolved_name, mac_pathname, MAXPATHLEN+1)) + return -1; + + c2pstr (mac_pathname); + cipb.hFileInfo.ioNamePtr = mac_pathname; + cipb.hFileInfo.ioVRefNum = 0; + cipb.hFileInfo.ioDirID = 0; + cipb.hFileInfo.ioFDirIndex = 0; + /* set to 0 to get information about specific dir or file */ + + errno = PBGetCatInfo (&cipb, false); + if (errno != noErr) + return -1; + + if (mode == F_OK) /* got this far, file exists */ + return 0; + + if (mode & X_OK) + if (cipb.hFileInfo.ioFlAttrib & 0x10) /* path refers to a directory */ + return 0; + else + { + if (cipb.hFileInfo.ioFlFndrInfo.fdType == 'APPL') + return 0; + else + return -1; + } + + if (mode & W_OK) + return (cipb.hFileInfo.ioFlAttrib & 0x1) ? -1 : 0; + /* don't allow if lock bit is on */ + + return -1; +} + + +#define DEV_NULL_FD 0x10000 + +#undef open +int +sys_open (const char *path, int oflag) +{ + char true_pathname[MAXPATHLEN+1], fully_resolved_name[MAXPATHLEN+1]; + int len; + char mac_pathname[MAXPATHLEN+1]; + + if (strcmp (path, "/dev/null") == 0) + return DEV_NULL_FD; /* some bogus fd to be ignored in write */ + + if (find_true_pathname (path, true_pathname, MAXPATHLEN+1) == -1) + return -1; + + len = readlink (true_pathname, fully_resolved_name, MAXPATHLEN); + if (len > -1) + fully_resolved_name[len] = '\0'; + else + strcpy (fully_resolved_name, true_pathname); + + if (!posix_to_mac_pathname (fully_resolved_name, mac_pathname, MAXPATHLEN+1)) + return -1; + else + { +#ifdef __MRC__ + int res = open (mac_pathname, oflag); + /* if (oflag == O_WRONLY || oflag == O_RDWR) */ + if (oflag & O_CREAT) + fsetfileinfo (mac_pathname, 'EMAx', 'TEXT'); + return res; +#else /* not __MRC__ */ + return open (mac_pathname, oflag); +#endif /* not __MRC__ */ + } +} + + +#undef creat +int +sys_creat (const char *path, mode_t mode) +{ + char true_pathname[MAXPATHLEN+1]; + int len; + char mac_pathname[MAXPATHLEN+1]; + + if (find_true_pathname (path, true_pathname, MAXPATHLEN+1) == -1) + return -1; + + if (!posix_to_mac_pathname (true_pathname, mac_pathname, MAXPATHLEN+1)) + return -1; + else + { +#ifdef __MRC__ + int result = creat (mac_pathname); + fsetfileinfo (mac_pathname, 'EMAx', 'TEXT'); + return result; +#else /* not __MRC__ */ + return creat (mac_pathname, mode); +#endif /* not __MRC__ */ + } +} + + +#undef unlink +int +sys_unlink (const char *path) +{ + char true_pathname[MAXPATHLEN+1], fully_resolved_name[MAXPATHLEN+1]; + int len; + char mac_pathname[MAXPATHLEN+1]; + + if (find_true_pathname (path, true_pathname, MAXPATHLEN+1) == -1) + return -1; + + len = readlink (true_pathname, fully_resolved_name, MAXPATHLEN); + if (len > -1) + fully_resolved_name[len] = '\0'; + else + strcpy (fully_resolved_name, true_pathname); + + if (!posix_to_mac_pathname (fully_resolved_name, mac_pathname, MAXPATHLEN+1)) + return -1; + else + return unlink (mac_pathname); +} + + +#undef read +int +sys_read (int fildes, char *buf, int count) +{ + if (fildes == 0) /* this should not be used for console input */ + return -1; + else +#if __MSL__ >= 0x6000 + return _read (fildes, buf, count); +#else + return read (fildes, buf, count); +#endif +} + + +#undef write +int +sys_write (int fildes, const char *buf, int count) +{ + if (fildes == DEV_NULL_FD) + return count; + else +#if __MSL__ >= 0x6000 + return _write (fildes, buf, count); +#else + return write (fildes, buf, count); +#endif +} + + +#undef rename +int +sys_rename (const char * old_name, const char * new_name) +{ + char true_old_pathname[MAXPATHLEN+1], true_new_pathname[MAXPATHLEN+1]; + char fully_resolved_old_name[MAXPATHLEN+1]; + int len; + char mac_old_name[MAXPATHLEN+1], mac_new_name[MAXPATHLEN+1]; + + if (find_true_pathname (old_name, true_old_pathname, MAXPATHLEN+1) == -1) + return -1; + + len = readlink (true_old_pathname, fully_resolved_old_name, MAXPATHLEN); + if (len > -1) + fully_resolved_old_name[len] = '\0'; + else + strcpy (fully_resolved_old_name, true_old_pathname); + + if (find_true_pathname (new_name, true_new_pathname, MAXPATHLEN+1) == -1) + return -1; + + if (strcmp (fully_resolved_old_name, true_new_pathname) == 0) + return 0; + + if (!posix_to_mac_pathname (fully_resolved_old_name, + mac_old_name, + MAXPATHLEN+1)) + return -1; + + if (!posix_to_mac_pathname(true_new_pathname, mac_new_name, MAXPATHLEN+1)) + return -1; + + /* If a file with new_name already exists, rename deletes the old + file in Unix. CW version fails in these situation. So we add a + call to unlink here. */ + (void) unlink (mac_new_name); + + return rename (mac_old_name, mac_new_name); +} + + +#undef fopen +extern FILE *fopen (const char *name, const char *mode); +FILE * +sys_fopen (const char *name, const char *mode) +{ + char true_pathname[MAXPATHLEN+1], fully_resolved_name[MAXPATHLEN+1]; + int len; + char mac_pathname[MAXPATHLEN+1]; + + if (find_true_pathname (name, true_pathname, MAXPATHLEN+1) == -1) + return 0; + + len = readlink (true_pathname, fully_resolved_name, MAXPATHLEN); + if (len > -1) + fully_resolved_name[len] = '\0'; + else + strcpy (fully_resolved_name, true_pathname); + + if (!posix_to_mac_pathname (fully_resolved_name, mac_pathname, MAXPATHLEN+1)) + return 0; + else + { +#ifdef __MRC__ + if (mode[0] == 'w' || mode[0] == 'a') + fsetfileinfo (mac_pathname, 'EMAx', 'TEXT'); +#endif /* not __MRC__ */ + return fopen (mac_pathname, mode); + } +} + + +#include <Events.h> + +long target_ticks = 0; + +#ifdef __MRC__ +__sigfun alarm_signal_func = (__sigfun) 0; +#elif __MWERKS__ +__signal_func_ptr alarm_signal_func = (__signal_func_ptr) 0; +#else /* not __MRC__ and not __MWERKS__ */ +You lose!!! +#endif /* not __MRC__ and not __MWERKS__ */ + + +/* These functions simulate SIG_ALRM. The stub for function signal + stores the signal handler function in alarm_signal_func if a + SIG_ALRM is encountered. check_alarm is called in XTread_socket, + which emacs calls periodically. A pending alarm is represented by + a non-zero target_ticks value. check_alarm calls the handler + function pointed to by alarm_signal_func if one has been set up and + an alarm is pending. */ + +void +check_alarm () +{ + if (target_ticks && TickCount () > target_ticks) + { + target_ticks = 0; + if (alarm_signal_func) + (*alarm_signal_func)(SIGALRM); + } +} + + +int +select (n, rfds, wfds, efds, timeout) + int n; + SELECT_TYPE *rfds; + SELECT_TYPE *wfds; + SELECT_TYPE *efds; + struct timeval *timeout; +{ +#ifdef TARGET_API_MAC_CARBON + return 1; +#else /* not TARGET_API_MAC_CARBON */ + EMACS_TIME end_time, now; + EventRecord e; + + /* Can only handle wait for keyboard input. */ + if (n > 1 || wfds || efds) + return -1; + + EMACS_GET_TIME (end_time); + EMACS_ADD_TIME (end_time, end_time, *timeout); + + do + { + /* Also return true if an event other than a keyDown has + occurred. This causes kbd_buffer_get_event in keyboard.c to + call read_avail_input which in turn calls XTread_socket to + poll for these events. Otherwise these never get processed + except but a very slow poll timer. */ + if (FD_ISSET (0, rfds) && EventAvail (everyEvent, &e)) + return 1; + + /* Also check movement of the mouse. */ + { + Point mouse_pos; + static Point old_mouse_pos = {-1, -1}; + + GetMouse (&mouse_pos); + if (!EqualPt (mouse_pos, old_mouse_pos)) + { + old_mouse_pos = mouse_pos; + return 1; + } + } + + WaitNextEvent (0, &e, 1UL, NULL); /* Accept no event; wait 1 + tic. by T.I. */ + + EMACS_GET_TIME (now); + EMACS_SUB_TIME (now, end_time, now); + } + while (!EMACS_TIME_NEG_P (now)); + + return 0; +#endif /* not TARGET_API_MAC_CARBON */ +} + + +/* Called in sys_select to wait for an alarm signal to arrive. */ + +int +pause () +{ + EventRecord e; + unsigned long tick; + + if (!target_ticks) /* no alarm pending */ + return -1; + + if ((tick = TickCount ()) < target_ticks) + WaitNextEvent (0, &e, target_ticks - tick, NULL); /* Accept no event; + just wait. by T.I. */ + + target_ticks = 0; + if (alarm_signal_func) + (*alarm_signal_func)(SIGALRM); + + return 0; +} + + +int +alarm (int seconds) +{ + long remaining = target_ticks ? (TickCount () - target_ticks) / 60 : 0; + + target_ticks = seconds ? TickCount () + 60 * seconds : 0; + + return (remaining < 0) ? 0 : (unsigned int) remaining; +} + + +#undef signal +#ifdef __MRC__ +extern __sigfun signal (int signal, __sigfun signal_func); +__sigfun +sys_signal (int signal_num, __sigfun signal_func) +#elif __MWERKS__ +extern __signal_func_ptr signal (int signal, __signal_func_ptr signal_func); +__signal_func_ptr +sys_signal (int signal_num, __signal_func_ptr signal_func) +#else /* not __MRC__ and not __MWERKS__ */ + You lose!!! +#endif /* not __MRC__ and not __MWERKS__ */ +{ + if (signal_num != SIGALRM) + return signal (signal_num, signal_func); + else + { +#ifdef __MRC__ + __sigfun old_signal_func; +#elif __MWERKS__ + __signal_func_ptr old_signal_func; +#else + You lose!!! +#endif + old_signal_func = alarm_signal_func; + alarm_signal_func = signal_func; + return old_signal_func; + } +} + + +/* gettimeofday should return the amount of time (in a timeval + structure) since midnight today. The toolbox function Microseconds + returns the number of microseconds (in a UnsignedWide value) since + the machine was booted. Also making this complicated is WideAdd, + WideSubtract, etc. take wide values. */ + +int +gettimeofday (tp) + struct timeval *tp; +{ + static inited = 0; + static wide wall_clock_at_epoch, clicks_at_epoch; + UnsignedWide uw_microseconds; + wide w_microseconds; + time_t sys_time (time_t *); + + /* If this function is called for the first time, record the number + of seconds since midnight and the number of microseconds since + boot at the time of this first call. */ + if (!inited) + { + time_t systime; + inited = 1; + systime = sys_time (NULL); + /* Store microseconds since midnight in wall_clock_at_epoch. */ + WideMultiply (systime, 1000000L, &wall_clock_at_epoch); + Microseconds (&uw_microseconds); + /* Store microseconds since boot in clicks_at_epoch. */ + clicks_at_epoch.hi = uw_microseconds.hi; + clicks_at_epoch.lo = uw_microseconds.lo; + } + + /* Get time since boot */ + Microseconds (&uw_microseconds); + + /* Convert to time since midnight*/ + w_microseconds.hi = uw_microseconds.hi; + w_microseconds.lo = uw_microseconds.lo; + WideSubtract (&w_microseconds, &clicks_at_epoch); + WideAdd (&w_microseconds, &wall_clock_at_epoch); + tp->tv_sec = WideDivide (&w_microseconds, 1000000L, &tp->tv_usec); + + return 0; +} + + +#ifdef __MRC__ +unsigned int +sleep (unsigned int seconds) +{ + unsigned long time_up; + EventRecord e; + + time_up = TickCount () + seconds * 60; + while (TickCount () < time_up) + { + /* Accept no event; just wait. by T.I. */ + WaitNextEvent (0, &e, 30, NULL); + } + + return (0); +} +#endif /* __MRC__ */ + + +/* The time functions adjust time values according to the difference + between the Unix and CW epoches. */ + +#undef gmtime +extern struct tm *gmtime (const time_t *); +struct tm * +sys_gmtime (const time_t *timer) +{ + time_t unix_time = *timer + CW_OR_MPW_UNIX_EPOCH_DIFF; + + return gmtime (&unix_time); +} + + +#undef localtime +extern struct tm *localtime (const time_t *); +struct tm * +sys_localtime (const time_t *timer) +{ +#if __MSL__ >= 0x6000 + time_t unix_time = *timer; +#else + time_t unix_time = *timer + CW_OR_MPW_UNIX_EPOCH_DIFF; +#endif + + return localtime (&unix_time); +} + + +#undef ctime +extern char *ctime (const time_t *); +char * +sys_ctime (const time_t *timer) +{ +#if __MSL__ >= 0x6000 + time_t unix_time = *timer; +#else + time_t unix_time = *timer + CW_OR_MPW_UNIX_EPOCH_DIFF; +#endif + + return ctime (&unix_time); +} + + +#undef time +extern time_t time (time_t *); +time_t +sys_time (time_t *timer) +{ +#if __MSL__ >= 0x6000 + time_t mac_time = time (NULL); +#else + time_t mac_time = time (NULL) - CW_OR_MPW_UNIX_EPOCH_DIFF; +#endif + + if (timer) + *timer = mac_time; + + return mac_time; +} + + +/* MPW strftime broken for "%p" format */ +#ifdef __MRC__ +#undef strftime +#include <time.h> +size_t +sys_strftime (char * s, size_t maxsize, const char * format, + const struct tm * timeptr) +{ + if (strcmp (format, "%p") == 0) + { + if (maxsize < 3) + return 0; + if (timeptr->tm_hour < 12) + { + strcpy (s, "AM"); + return 2; + } + else + { + strcpy (s, "PM"); + return 2; + } + } + else + return strftime (s, maxsize, format, timeptr); +} +#endif /* __MRC__ */ + + +/* no subprocesses, empty wait */ + +int +wait (int pid) +{ + return 0; +} + + +void +croak (char *badfunc) +{ + printf ("%s not yet implemented\r\n", badfunc); + exit (1); +} + + +char * +index (const char * str, int chr) +{ + return strchr (str, chr); +} + + +char * +mktemp (char *template) +{ + int len, k; + static seqnum = 0; + + len = strlen (template); + k = len - 1; + while (k >= 0 && template[k] == 'X') + k--; + + k++; /* make k index of first 'X' */ + + if (k < len) + { + /* Zero filled, number of digits equal to the number of X's. */ + sprintf (&template[k], "%0*d", len-k, seqnum++); + + return template; + } + else + return 0; +} + + +/* Emulate getpwuid, getpwnam and others. */ + +#define PASSWD_FIELD_SIZE 256 + +static char my_passwd_name[PASSWD_FIELD_SIZE]; +static char my_passwd_dir[MAXPATHLEN+1]; + +static struct passwd my_passwd = +{ + my_passwd_name, + my_passwd_dir, +}; + + +/* Initialized by main () in macterm.c to pathname of emacs directory. */ + +char emacs_passwd_dir[MAXPATHLEN+1]; + +char * +getwd (char *); + +void +init_emacs_passwd_dir () +{ + int found = false; + + if (getwd (emacs_passwd_dir) && getwd (my_passwd_dir)) + { + /* Need pathname of first ancestor that begins with "emacs" + since Mac emacs application is somewhere in the emacs-* + tree. */ + int len = strlen (emacs_passwd_dir); + int j = len - 1; + /* j points to the "/" following the directory name being + compared. */ + int i = j - 1; + while (i >= 0 && !found) + { + while (i >= 0 && emacs_passwd_dir[i] != '/') + i--; + if (emacs_passwd_dir[i] == '/' && i+5 < len) + found = (strncmp (&(emacs_passwd_dir[i+1]), "emacs", 5) == 0); + if (found) + emacs_passwd_dir[j+1] = '\0'; + else + { + j = i; + i = j - 1; + } + } + } + + if (!found) + { + /* Setting to "/" probably won't work but set it to something + anyway. */ + strcpy (emacs_passwd_dir, "/"); + strcpy (my_passwd_dir, "/"); + } +} + + +static struct passwd emacs_passwd = +{ + "emacs", + emacs_passwd_dir, +}; + +static int my_passwd_inited = 0; + + +static void +init_my_passwd () +{ + char **owner_name; + + /* Note: my_passwd_dir initialized in int_emacs_passwd_dir to + directory where Emacs was started. */ + + owner_name = (char **) GetResource ('STR ',-16096); + if (owner_name) + { + HLock (owner_name); + BlockMove ((unsigned char *) *owner_name, + (unsigned char *) my_passwd_name, + *owner_name[0]+1); + HUnlock (owner_name); + p2cstr ((unsigned char *) my_passwd_name); + } + else + my_passwd_name[0] = 0; +} + + +struct passwd * +getpwuid (uid_t uid) +{ + if (!my_passwd_inited) + { + init_my_passwd (); + my_passwd_inited = 1; + } + + return &my_passwd; +} + + +struct passwd * +getpwnam (const char *name) +{ + if (strcmp (name, "emacs") == 0) + return &emacs_passwd; + + if (!my_passwd_inited) + { + init_my_passwd (); + my_passwd_inited = 1; + } + + return &my_passwd; +} + + +/* The functions fork, kill, sigsetmask, sigblock, request_sigio, + setpgrp, setpriority, and unrequest_sigio are defined to be empty + as in msdos.c. */ + + +int +fork () +{ + return -1; +} + + +int +kill (int x, int y) +{ + return -1; +} + + +void +sys_subshell () +{ + error ("Can't spawn subshell"); +} + + +int +sigsetmask (int x) +{ + return 0; +} + + +int +sigblock (int mask) +{ + return 0; +} + + +void +request_sigio (void) +{ +} + + +void +unrequest_sigio (void) +{ +} + + +int +setpgrp () +{ + return 0; +} + + +/* No pipes yet. */ + +int +pipe (int _fildes[2]) +{ + errno = EACCES; + return -1; +} + + +/* Hard and symbolic links. */ + +int +symlink (const char *name1, const char *name2) +{ + errno = ENOENT; + return -1; +} + + +int +link (const char *name1, const char *name2) +{ + errno = ENOENT; + return -1; +} + +#endif /* ! MAC_OSX */ + +/* Determine the path name of the file specified by VREFNUM, DIRID, + and NAME and place that in the buffer PATH of length + MAXPATHLEN. */ +int +path_from_vol_dir_name (char *path, int man_path_len, short vol_ref_num, + long dir_id, ConstStr255Param name) +{ + Str255 dir_name; + CInfoPBRec cipb; + OSErr err; + + if (strlen (name) > man_path_len) + return 0; + + memcpy (dir_name, name, name[0]+1); + memcpy (path, name, name[0]+1); + p2cstr (path); + + cipb.dirInfo.ioDrParID = dir_id; + cipb.dirInfo.ioNamePtr = dir_name; + + do + { + cipb.dirInfo.ioVRefNum = vol_ref_num; + cipb.dirInfo.ioFDirIndex = -1; + cipb.dirInfo.ioDrDirID = cipb.dirInfo.ioDrParID; + /* go up to parent each time */ + + err = PBGetCatInfo (&cipb, false); + if (err != noErr) + return 0; + + p2cstr (dir_name); + if (strlen (dir_name) + strlen (path) + 1 >= man_path_len) + return 0; + + strcat (dir_name, ":"); + strcat (dir_name, path); + /* attach to front since we're going up directory tree */ + strcpy (path, dir_name); + } + while (cipb.dirInfo.ioDrDirID != fsRtDirID); + /* stop when we see the volume's root directory */ + + return 1; /* success */ +} + +#ifndef MAC_OSX + +int +readlink (const char *path, char *buf, int bufsiz) +{ + char mac_sym_link_name[MAXPATHLEN+1]; + OSErr err; + FSSpec fsspec; + Boolean target_is_folder, was_aliased; + Str255 directory_name, mac_pathname; + CInfoPBRec cipb; + + if (posix_to_mac_pathname (path, mac_sym_link_name, MAXPATHLEN+1) == 0) + return -1; + + c2pstr (mac_sym_link_name); + err = FSMakeFSSpec (0, 0, mac_sym_link_name, &fsspec); + if (err != noErr) + { + errno = ENOENT; + return -1; + } + + err = ResolveAliasFile (&fsspec, true, &target_is_folder, &was_aliased); + if (err != noErr || !was_aliased) + { + errno = ENOENT; + return -1; + } + + if (path_from_vol_dir_name (mac_pathname, 255, fsspec.vRefNum, fsspec.parID, + fsspec.name) == 0) + { + errno = ENOENT; + return -1; + } + + if (mac_to_posix_pathname (mac_pathname, buf, bufsiz) == 0) + { + errno = ENOENT; + return -1; + } + + return strlen (buf); +} + + +/* Convert a path to one with aliases fully expanded. */ + +static int +find_true_pathname (const char *path, char *buf, int bufsiz) +{ + char *q, temp[MAXPATHLEN+1]; + const char *p; + int len; + + if (bufsiz <= 0 || path == 0 || path[0] == '\0') + return -1; + + buf[0] = '\0'; + + p = path; + if (*p == '/') + q = strchr (p + 1, '/'); + else + q = strchr (p, '/'); + len = 0; /* loop may not be entered, e.g., for "/" */ + + while (q) + { + strcpy (temp, buf); + strncat (temp, p, q - p); + len = readlink (temp, buf, bufsiz); + if (len <= -1) + { + if (strlen (temp) + 1 > bufsiz) + return -1; + strcpy (buf, temp); + } + strcat (buf, "/"); + len++; + p = q + 1; + q = strchr(p, '/'); + } + + if (len + strlen (p) + 1 >= bufsiz) + return -1; + + strcat (buf, p); + return len + strlen (p); +} + + +mode_t +umask (mode_t numask) +{ + static mode_t mask = 022; + mode_t oldmask = mask; + mask = numask; + return oldmask; +} + + +int +chmod (const char *path, mode_t mode) +{ + /* say it always succeed for now */ + return 0; +} + + +int +dup (int oldd) +{ +#ifdef __MRC__ + return fcntl (oldd, F_DUPFD, 0); +#elif __MWERKS__ + /* current implementation of fcntl in fcntl.mac.c simply returns old + descriptor */ + return fcntl (oldd, F_DUPFD); +#else +You lose!!! +#endif +} + + +/* This is from the original sysdep.c. Emulate BSD dup2. First close + newd if it already exists. Then, attempt to dup oldd. If not + successful, call dup2 recursively until we are, then close the + unsuccessful ones. */ + +int +dup2 (int oldd, int newd) +{ + int fd, ret; + + close (newd); + + fd = dup (oldd); + if (fd == -1) + return -1; + if (fd == newd) + return newd; + ret = dup2 (oldd, newd); + close (fd); + return ret; +} + + +/* let it fail for now */ + +char * +sbrk (int incr) +{ + return (char *) -1; +} + + +int +fsync (int fd) +{ + return 0; +} + + +int +ioctl (int d, int request, void *argp) +{ + return -1; +} + + +#ifdef __MRC__ +int +isatty (int fildes) +{ + if (fildes >=0 && fildes <= 2) + return 1; + else + return 0; +} + + +int +getgid () +{ + return 100; +} + + +int +getegid () +{ + return 100; +} + + +int +getuid () +{ + return 200; +} + + +int +geteuid () +{ + return 200; +} +#endif /* __MRC__ */ + + +#ifdef __MWERKS__ +#if __MSL__ < 0x6000 +#undef getpid +int +getpid () +{ + return 9999; +} +#endif +#endif /* __MWERKS__ */ + +#endif /* ! MAC_OSX */ + + +/* Return the path to the directory in which Emacs can create + temporary files. The MacOS "temporary items" directory cannot be + used because it removes the file written by a process when it + exits. In that sense it's more like "/dev/null" than "/tmp" (but + again not exactly). And of course Emacs needs to read back the + files written by its subprocesses. So here we write the files to a + directory "Emacs" in the Preferences Folder. This directory is + created if it does not exist. */ + +char * +get_temp_dir_name () +{ + static char *temp_dir_name = NULL; + short vol_ref_num; + long dir_id; + OSErr err; + Str255 dir_name, full_path; + CInfoPBRec cpb; + char unix_dir_name[MAXPATHLEN+1]; + DIR *dir; + + /* Cache directory name with pointer temp_dir_name. + Look for it only the first time. */ + if (!temp_dir_name) + { + err = FindFolder (kOnSystemDisk, kPreferencesFolderType, kCreateFolder, + &vol_ref_num, &dir_id); + if (err != noErr) + return NULL; + + if (!path_from_vol_dir_name (full_path, 255, vol_ref_num, dir_id, "\p")) + return NULL; + + if (strlen (full_path) + 6 <= MAXPATHLEN) + strcat (full_path, "Emacs:"); + else + return NULL; + + if (!mac_to_posix_pathname (full_path, unix_dir_name, MAXPATHLEN+1)) + return NULL; + + dir = opendir (unix_dir_name); /* check whether temp directory exists */ + if (dir) + closedir (dir); + else if (mkdir (unix_dir_name, 0700) != 0) /* create it if not */ + return NULL; + + temp_dir_name = (char *) malloc (strlen (unix_dir_name) + 1); + strcpy (temp_dir_name, unix_dir_name); + } + + return temp_dir_name; +} + +#ifndef MAC_OSX + +/* Allocate and construct an array of pointers to strings from a list + of strings stored in a 'STR#' resource. The returned pointer array + is stored in the style of argv and environ: if the 'STR#' resource + contains numString strings, an pointer array with numString+1 + elements is returned in which the last entry contains a null + pointer. The pointer to the pointer array is passed by pointer in + parameter t. The resource ID of the 'STR#' resource is passed in + parameter StringListID. + */ + +void +get_string_list (char ***t, short string_list_id) +{ + Handle h; + Ptr p; + int i, num_strings; + + h = GetResource ('STR#', string_list_id); + if (h) + { + HLock (h); + p = *h; + num_strings = * (short *) p; + p += sizeof(short); + *t = (char **) malloc (sizeof (char *) * (num_strings + 1)); + for (i = 0; i < num_strings; i++) + { + short length = *p++; + (*t)[i] = (char *) malloc (length + 1); + strncpy ((*t)[i], p, length); + (*t)[i][length] = '\0'; + p += length; + } + (*t)[num_strings] = 0; + HUnlock (h); + } + else + { + /* Return no string in case GetResource fails. Bug fixed by + Ikegami Tsutomu. Caused MPW build to crash without sym -on + option (no sym -on implies -opt local). */ + *t = (char **) malloc (sizeof (char *)); + (*t)[0] = 0; + } +} + + +static char * +get_path_to_system_folder () +{ + short vol_ref_num; + long dir_id; + OSErr err; + Str255 dir_name, full_path; + CInfoPBRec cpb; + static char system_folder_unix_name[MAXPATHLEN+1]; + DIR *dir; + + err = FindFolder (kOnSystemDisk, kSystemFolderType, kDontCreateFolder, + &vol_ref_num, &dir_id); + if (err != noErr) + return NULL; + + if (!path_from_vol_dir_name (full_path, 255, vol_ref_num, dir_id, "\p")) + return NULL; + + if (!mac_to_posix_pathname (full_path, system_folder_unix_name, + MAXPATHLEN+1)) + return NULL; + + return system_folder_unix_name; +} + + +char **environ; + +#define ENVIRON_STRING_LIST_ID 128 + +/* Get environment variable definitions from STR# resource. */ + +void +init_environ () +{ + int i; + + get_string_list (&environ, ENVIRON_STRING_LIST_ID); + + i = 0; + while (environ[i]) + i++; + + /* Make HOME directory the one Emacs starts up in if not specified + by resource. */ + if (getenv ("HOME") == NULL) + { + environ = (char **) realloc (environ, sizeof (char *) * (i + 2)); + if (environ) + { + environ[i] = (char *) malloc (strlen (my_passwd_dir) + 6); + if (environ[i]) + { + strcpy (environ[i], "HOME="); + strcat (environ[i], my_passwd_dir); + } + environ[i+1] = 0; + i++; + } + } + + /* Make HOME directory the one Emacs starts up in if not specified + by resource. */ + if (getenv ("MAIL") == NULL) + { + environ = (char **) realloc (environ, sizeof (char *) * (i + 2)); + if (environ) + { + char * path_to_system_folder = get_path_to_system_folder (); + environ[i] = (char *) malloc (strlen (path_to_system_folder) + 22); + if (environ[i]) + { + strcpy (environ[i], "MAIL="); + strcat (environ[i], path_to_system_folder); + strcat (environ[i], "Eudora Folder/In"); + } + environ[i+1] = 0; + } + } +} + + +/* Return the value of the environment variable NAME. */ + +char * +getenv (const char *name) +{ + int length = strlen(name); + char **e; + + for (e = environ; *e != 0; e++) + if (strncmp(*e, name, length) == 0 && (*e)[length] == '=') + return &(*e)[length + 1]; + + if (strcmp (name, "TMPDIR") == 0) + return get_temp_dir_name (); + + return 0; +} + + +#ifdef __MRC__ +/* see Interfaces&Libraries:Interfaces:CIncludes:signal.h */ +char *sys_siglist[] = +{ + "Zero is not a signal!!!", + "Abort", /* 1 */ + "Interactive user interrupt", /* 2 */ "?", + "Floating point exception", /* 4 */ "?", "?", "?", + "Illegal instruction", /* 8 */ "?", "?", "?", "?", "?", "?", "?", + "Segment violation", /* 16 */ "?", "?", "?", "?", "?", "?", "?", + "?", "?", "?", "?", "?", "?", "?", "?", + "Terminal" /* 32 */ +}; +#elif __MWERKS__ +char *sys_siglist[] = +{ + "Zero is not a signal!!!", + "Abort", + "Floating point exception", + "Illegal instruction", + "Interactive user interrupt", + "Segment violation", + "Terminal" +}; +#else /* not __MRC__ and not __MWERKS__ */ +You lose!!! +#endif /* not __MRC__ and not __MWERKS__ */ + + +#include <utsname.h> + +int +uname (struct utsname *name) +{ + char **system_name; + system_name = GetString (-16413); /* IM - Resource Manager Reference */ + if (system_name) + { + BlockMove (*system_name, name->nodename, (*system_name)[0]+1); + p2cstr (name->nodename); + return 0; + } + else + return -1; +} + + +#include <Processes.h> +#include <EPPC.h> + +/* Event class of HLE sent to subprocess. */ +const OSType kEmacsSubprocessSend = 'ESND'; + +/* Event class of HLE sent back from subprocess. */ +const OSType kEmacsSubprocessReply = 'ERPY'; + + +char * +mystrchr (char *s, char c) +{ + while (*s && *s != c) + { + if (*s == '\\') + s++; + s++; + } + + if (*s) + { + *s = '\0'; + return s; + } + else + return NULL; +} + + +char * +mystrtok (char *s) +{ + while (*s) + s++; + + return s + 1; +} + + +void +mystrcpy (char *to, char *from) +{ + while (*from) + { + if (*from == '\\') + from++; + *to++ = *from++; + } + *to = '\0'; +} + + +/* Start a Mac subprocess. Arguments for it is passed in argv (null + terminated). The process should run with the default directory + "workdir", read input from "infn", and write output and error to + "outfn" and "errfn", resp. The Process Manager call + LaunchApplication is used to start the subprocess. We use high + level events as the mechanism to pass arguments to the subprocess + and to make Emacs wait for the subprocess to terminate and pass + back a result code. The bulk of the code here packs the arguments + into one message to be passed together with the high level event. + Emacs also sometimes starts a subprocess using a shell to perform + wildcard filename expansion. Since we don't really have a shell on + the Mac, this case is detected and the starting of the shell is + by-passed. We really need to add code here to do filename + expansion to support such functionality. */ + +int +run_mac_command (argv, workdir, infn, outfn, errfn) + unsigned char **argv; + const char *workdir; + const char *infn, *outfn, *errfn; +{ +#ifdef TARGET_API_MAC_CARBON + return -1; +#else /* not TARGET_API_MAC_CARBON */ + char macappname[MAXPATHLEN+1], macworkdir[MAXPATHLEN+1]; + char macinfn[MAXPATHLEN+1], macoutfn[MAXPATHLEN+1], macerrfn[MAXPATHLEN+1]; + int paramlen, argc, newargc, j, retries; + char **newargv, *param, *p; + OSErr iErr; + FSSpec spec; + LaunchParamBlockRec lpbr; + EventRecord send_event, reply_event; + RgnHandle cursor_region_handle; + TargetID targ; + unsigned long ref_con, len; + + if (posix_to_mac_pathname (workdir, macworkdir, MAXPATHLEN+1) == 0) + return -1; + if (posix_to_mac_pathname (infn, macinfn, MAXPATHLEN+1) == 0) + return -1; + if (posix_to_mac_pathname (outfn, macoutfn, MAXPATHLEN+1) == 0) + return -1; + if (posix_to_mac_pathname (errfn, macerrfn, MAXPATHLEN+1) == 0) + return -1; + + paramlen = strlen (macworkdir) + strlen (macinfn) + strlen (macoutfn) + + strlen (macerrfn) + 4; /* count nulls at end of strings */ + + argc = 0; + while (argv[argc]) + argc++; + + if (argc == 0) + return -1; + + /* If a subprocess is invoked with a shell, we receive 3 arguments + of the form: "<path to emacs bins>/sh" "-c" "<path to emacs + bins>/<command> <command args>" */ + j = strlen (argv[0]); + if (j >= 3 && strcmp (argv[0]+j-3, "/sh") == 0 + && argc == 3 && strcmp (argv[1], "-c") == 0) + { + char *command, *t, tempmacpathname[MAXPATHLEN+1]; + + /* The arguments for the command in argv[2] are separated by + spaces. Count them and put the count in newargc. */ + command = (char *) alloca (strlen (argv[2])+2); + strcpy (command, argv[2]); + if (command[strlen (command) - 1] != ' ') + strcat (command, " "); + + t = command; + newargc = 0; + t = mystrchr (t, ' '); + while (t) + { + newargc++; + t = mystrchr (t+1, ' '); + } + + newargv = (char **) alloca (sizeof (char *) * newargc); + + t = command; + for (j = 0; j < newargc; j++) + { + newargv[j] = (char *) alloca (strlen (t) + 1); + mystrcpy (newargv[j], t); + + t = mystrtok (t); + paramlen += strlen (newargv[j]) + 1; + } + + if (strncmp (newargv[0], "~emacs/", 7) == 0) + { + if (posix_to_mac_pathname (newargv[0], tempmacpathname, MAXPATHLEN+1) + == 0) + return -1; + } + else + { /* sometimes Emacs call "sh" without a path for the command */ +#if 0 + char *t = (char *) alloca (strlen (newargv[0]) + 7 + 1); + strcpy (t, "~emacs/"); + strcat (t, newargv[0]); +#endif /* 0 */ + Lisp_Object path; + openp (Vexec_path, build_string (newargv[0]), EXEC_SUFFIXES, &path, + 1); + + if (NILP (path)) + return -1; + if (posix_to_mac_pathname (XSTRING (path)->data, tempmacpathname, + MAXPATHLEN+1) == 0) + return -1; + } + strcpy (macappname, tempmacpathname); + } + else + { + if (posix_to_mac_pathname (argv[0], macappname, MAXPATHLEN+1) == 0) + return -1; + + newargv = (char **) alloca (sizeof (char *) * argc); + newargc = argc; + for (j = 1; j < argc; j++) + { + if (strncmp (argv[j], "~emacs/", 7) == 0) + { + char *t = strchr (argv[j], ' '); + if (t) + { + char tempcmdname[MAXPATHLEN+1], tempmaccmdname[MAXPATHLEN+1]; + strncpy (tempcmdname, argv[j], t-argv[j]); + tempcmdname[t-argv[j]] = '\0'; + if (posix_to_mac_pathname (tempcmdname, tempmaccmdname, + MAXPATHLEN+1) == 0) + return -1; + newargv[j] = (char *) alloca (strlen (tempmaccmdname) + + strlen (t) + 1); + strcpy (newargv[j], tempmaccmdname); + strcat (newargv[j], t); + } + else + { + char tempmaccmdname[MAXPATHLEN+1]; + if (posix_to_mac_pathname (argv[j], tempmaccmdname, + MAXPATHLEN+1) == 0) + return -1; + newargv[j] = (char *) alloca (strlen (tempmaccmdname)+1); + strcpy (newargv[j], tempmaccmdname); + } + } + else + newargv[j] = argv[j]; + paramlen += strlen (newargv[j]) + 1; + } + } + + /* After expanding all the arguments, we now know the length of the + parameter block to be sent to the subprocess as a message + attached to the HLE. */ + param = (char *) malloc (paramlen + 1); + if (!param) + return -1; + + p = param; + *p++ = newargc; + /* first byte of message contains number of arguments for command */ + strcpy (p, macworkdir); + p += strlen (macworkdir); + *p++ = '\0'; + /* null terminate strings sent so it's possible to use strcpy over there */ + strcpy (p, macinfn); + p += strlen (macinfn); + *p++ = '\0'; + strcpy (p, macoutfn); + p += strlen (macoutfn); + *p++ = '\0'; + strcpy (p, macerrfn); + p += strlen (macerrfn); + *p++ = '\0'; + for (j = 1; j < newargc; j++) + { + strcpy (p, newargv[j]); + p += strlen (newargv[j]); + *p++ = '\0'; + } + + c2pstr (macappname); + + iErr = FSMakeFSSpec (0, 0, macappname, &spec); + + if (iErr != noErr) + { + free (param); + return -1; + } + + lpbr.launchBlockID = extendedBlock; + lpbr.launchEPBLength = extendedBlockLen; + lpbr.launchControlFlags = launchContinue + launchNoFileFlags; + lpbr.launchAppSpec = &spec; + lpbr.launchAppParameters = NULL; + + iErr = LaunchApplication (&lpbr); /* call the subprocess */ + if (iErr != noErr) + { + free (param); + return -1; + } + + send_event.what = kHighLevelEvent; + send_event.message = kEmacsSubprocessSend; + /* Event ID stored in "where" unused */ + + retries = 3; + /* OS may think current subprocess has terminated if previous one + terminated recently. */ + do + { + iErr = PostHighLevelEvent (&send_event, &lpbr.launchProcessSN, 0, param, + paramlen + 1, receiverIDisPSN); + } + while (iErr == sessClosedErr && retries-- > 0); + + if (iErr != noErr) + { + free (param); + return -1; + } + + cursor_region_handle = NewRgn (); + + /* Wait for the subprocess to finish, when it will send us a ERPY + high level event. */ + while (1) + if (WaitNextEvent (highLevelEventMask, &reply_event, 180, + cursor_region_handle) + && reply_event.message == kEmacsSubprocessReply) + break; + + /* The return code is sent through the refCon */ + iErr = AcceptHighLevelEvent (&targ, &ref_con, NULL, &len); + if (iErr != noErr) + { + DisposeHandle ((Handle) cursor_region_handle); + free (param); + return -1; + } + + DisposeHandle ((Handle) cursor_region_handle); + free (param); + + return ref_con; +#endif /* not TARGET_API_MAC_CARBON */ +} + + +DIR * +opendir (const char *dirname) +{ + char true_pathname[MAXPATHLEN+1], fully_resolved_name[MAXPATHLEN+1]; + char mac_pathname[MAXPATHLEN+1], vol_name[MAXPATHLEN+1]; + DIR *dirp; + CInfoPBRec cipb; + HVolumeParam vpb; + int len, vol_name_len; + + if (find_true_pathname (dirname, true_pathname, MAXPATHLEN+1) == -1) + return 0; + + len = readlink (true_pathname, fully_resolved_name, MAXPATHLEN); + if (len > -1) + fully_resolved_name[len] = '\0'; + else + strcpy (fully_resolved_name, true_pathname); + + dirp = (DIR *) malloc (sizeof(DIR)); + if (!dirp) + return 0; + + /* Handle special case when dirname is "/": sets up for readir to + get all mount volumes. */ + if (strcmp (fully_resolved_name, "/") == 0) + { + dirp->getting_volumes = 1; /* special all mounted volumes DIR struct */ + dirp->current_index = 1; /* index for first volume */ + return dirp; + } + + /* Handle typical cases: not accessing all mounted volumes. */ + if (!posix_to_mac_pathname (fully_resolved_name, mac_pathname, MAXPATHLEN+1)) + return 0; + + /* Emacs calls opendir without the trailing '/', Mac needs trailing ':' */ + len = strlen (mac_pathname); + if (mac_pathname[len - 1] != ':' && len < MAXPATHLEN) + strcat (mac_pathname, ":"); + + /* Extract volume name */ + vol_name_len = strchr (mac_pathname, ':') - mac_pathname; + strncpy (vol_name, mac_pathname, vol_name_len); + vol_name[vol_name_len] = '\0'; + strcat (vol_name, ":"); + + c2pstr (mac_pathname); + cipb.hFileInfo.ioNamePtr = mac_pathname; + /* using full pathname so vRefNum and DirID ignored */ + cipb.hFileInfo.ioVRefNum = 0; + cipb.hFileInfo.ioDirID = 0; + cipb.hFileInfo.ioFDirIndex = 0; + /* set to 0 to get information about specific dir or file */ + + errno = PBGetCatInfo (&cipb, false); + if (errno != noErr) + { + errno = ENOENT; + return 0; + } + + if (!(cipb.hFileInfo.ioFlAttrib & 0x10)) /* bit 4 = 1 for directories */ + return 0; /* not a directory */ + + dirp->dir_id = cipb.dirInfo.ioDrDirID; /* used later in readdir */ + dirp->getting_volumes = 0; + dirp->current_index = 1; /* index for first file/directory */ + + c2pstr (vol_name); + vpb.ioNamePtr = vol_name; + /* using full pathname so vRefNum and DirID ignored */ + vpb.ioVRefNum = 0; + vpb.ioVolIndex = -1; + errno = PBHGetVInfo ((union HParamBlockRec *) &vpb, false); + if (errno != noErr) + { + errno = ENOENT; + return 0; + } + + dirp->vol_ref_num = vpb.ioVRefNum; + + return dirp; +} + +int +closedir (DIR *dp) +{ + free (dp); + + return 0; +} + + +struct dirent * +readdir (DIR *dp) +{ + HParamBlockRec hpblock; + CInfoPBRec cipb; + static struct dirent s_dirent; + static Str255 s_name; + int done; + char *p; + + /* Handle the root directory containing the mounted volumes. Call + PBHGetVInfo specifying an index to obtain the info for a volume. + PBHGetVInfo returns an error when it receives an index beyond the + last volume, at which time we should return a nil dirent struct + pointer. */ + if (dp->getting_volumes) + { + hpblock.volumeParam.ioNamePtr = s_name; + hpblock.volumeParam.ioVRefNum = 0; + hpblock.volumeParam.ioVolIndex = dp->current_index; + + errno = PBHGetVInfo (&hpblock, false); + if (errno != noErr) + { + errno = ENOENT; + return 0; + } + + p2cstr (s_name); + strcat (s_name, "/"); /* need "/" for stat to work correctly */ + + dp->current_index++; + + s_dirent.d_ino = hpblock.volumeParam.ioVRefNum; + s_dirent.d_name = s_name; + + return &s_dirent; + } + else + { + cipb.hFileInfo.ioVRefNum = dp->vol_ref_num; + cipb.hFileInfo.ioNamePtr = s_name; + /* location to receive filename returned */ + + /* return only visible files */ + done = false; + while (!done) + { + cipb.hFileInfo.ioDirID = dp->dir_id; + /* directory ID found by opendir */ + cipb.hFileInfo.ioFDirIndex = dp->current_index; + + errno = PBGetCatInfo (&cipb, false); + if (errno != noErr) + { + errno = ENOENT; + return 0; + } + + /* insist on an visibile entry */ + if (cipb.hFileInfo.ioFlAttrib & 0x10) /* directory? */ + done = !(cipb.dirInfo.ioDrUsrWds.frFlags & fInvisible); + else + done = !(cipb.hFileInfo.ioFlFndrInfo.fdFlags & fInvisible); + + dp->current_index++; + } + + p2cstr (s_name); + + p = s_name; + while (*p) + { + if (*p == '/') + *p = ':'; + p++; + } + + s_dirent.d_ino = cipb.dirInfo.ioDrDirID; + /* value unimportant: non-zero for valid file */ + s_dirent.d_name = s_name; + + return &s_dirent; + } +} + + +char * +getwd (char *path) +{ + char mac_pathname[MAXPATHLEN+1]; + Str255 directory_name; + OSErr errno; + CInfoPBRec cipb; + + if (path_from_vol_dir_name (mac_pathname, 255, 0, 0, "\p") == 0) + return NULL; + + if (mac_to_posix_pathname (mac_pathname, path, MAXPATHLEN+1) == 0) + return 0; + else + return path; +} + +#endif /* ! MAC_OSX */ + + +void +initialize_applescript () +{ + AEDesc null_desc; + OSAError osaerror; + + /* if open fails, as_scripting_component is set to NULL. Its + subsequent use in OSA calls will fail with badComponentInstance + error. */ + as_scripting_component = OpenDefaultComponent (kOSAComponentType, + kAppleScriptSubtype); + + null_desc.descriptorType = typeNull; + null_desc.dataHandle = 0; + osaerror = OSAMakeContext (as_scripting_component, &null_desc, + kOSANullScript, &as_script_context); + if (osaerror) + as_script_context = kOSANullScript; + /* use default context if create fails */ +} + + +void terminate_applescript() +{ + OSADispose (as_scripting_component, as_script_context); + CloseComponent (as_scripting_component); +} + + +/* Compile and execute the AppleScript SCRIPT and return the error + status as function value. A zero is returned if compilation and + execution is successful, in which case RESULT returns a pointer to + a string containing the resulting script value. Otherwise, the Mac + error code is returned and RESULT returns a pointer to an error + string. In both cases the caller should deallocate the storage + used by the string pointed to by RESULT if it is non-NULL. For + documentation on the MacOS scripting architecture, see Inside + Macintosh - Interapplication Communications: Scripting Components. */ + +static long +do_applescript (char *script, char **result) +{ + AEDesc script_desc, result_desc, error_desc; + OSErr error; + OSAError osaerror; + long length; + + *result = 0; + + error = AECreateDesc (typeChar, script, strlen(script), &script_desc); + if (error) + return error; + + osaerror = OSADoScript (as_scripting_component, &script_desc, kOSANullScript, + typeChar, kOSAModeNull, &result_desc); + + if (osaerror == errOSAScriptError) + { + /* error executing AppleScript: retrieve error message */ + if (!OSAScriptError (as_scripting_component, kOSAErrorMessage, typeChar, + &error_desc)) + { +#if TARGET_API_MAC_CARBON + length = AEGetDescDataSize (&error_desc); + *result = (char *) xmalloc (length + 1); + if (*result) + { + AEGetDescData (&error_desc, *result, length); + *(*result + length) = '\0'; + } +#else /* not TARGET_API_MAC_CARBON */ + HLock (error_desc.dataHandle); + length = GetHandleSize(error_desc.dataHandle); + *result = (char *) xmalloc (length + 1); + if (*result) + { + memcpy (*result, *(error_desc.dataHandle), length); + *(*result + length) = '\0'; + } + HUnlock (error_desc.dataHandle); +#endif /* not TARGET_API_MAC_CARBON */ + AEDisposeDesc (&error_desc); + } + } + else if (osaerror == noErr) /* success: retrieve resulting script value */ + { +#if TARGET_API_MAC_CARBON + length = AEGetDescDataSize (&result_desc); + *result = (char *) xmalloc (length + 1); + if (*result) + { + AEGetDescData (&result_desc, *result, length); + *(*result + length) = '\0'; + } +#else /* not TARGET_API_MAC_CARBON */ + HLock (result_desc.dataHandle); + length = GetHandleSize(result_desc.dataHandle); + *result = (char *) xmalloc (length + 1); + if (*result) + { + memcpy (*result, *(result_desc.dataHandle), length); + *(*result + length) = '\0'; + } + HUnlock (result_desc.dataHandle); +#endif /* not TARGET_API_MAC_CARBON */ + } + + AEDisposeDesc (&script_desc); + AEDisposeDesc (&result_desc); + + return osaerror; +} + + +DEFUN ("do-applescript", Fdo_applescript, Sdo_applescript, 1, 1, 0, + doc: /* Compile and execute AppleScript SCRIPT and retrieve and return the result. +If compilation and execution are successful, the resulting script +value is returned as a string. Otherwise the function aborts and +displays the error message returned by the AppleScript scripting +component. */) + (script) + Lisp_Object script; +{ + char *result, *temp; + Lisp_Object lisp_result; + long status; + + CHECK_STRING (script); + + status = do_applescript (XSTRING (script)->data, &result); + if (status) + { + if (!result) + error ("AppleScript error %ld", status); + else + { + /* Unfortunately only OSADoScript in do_applescript knows how + how large the resulting script value or error message is + going to be and therefore as caller memory must be + deallocated here. It is necessary to free the error + message before calling error to avoid a memory leak. */ + temp = (char *) alloca (strlen (result) + 1); + strcpy (temp, result); + xfree (result); + error (temp); + } + } + else + { + lisp_result = build_string (result); + xfree (result); + return lisp_result; + } +} + + +DEFUN ("mac-file-name-to-posix", Fmac_file_name_to_posix, + Smac_file_name_to_posix, 1, 1, 0, + doc: /* Convert Macintosh filename to Posix form. */) + (mac_filename) + Lisp_Object mac_filename; +{ + char posix_filename[MAXPATHLEN+1]; + + CHECK_STRING (mac_filename); + + if (mac_to_posix_pathname (XSTRING (mac_filename)->data, posix_filename, + MAXPATHLEN)) + return build_string (posix_filename); + else + return Qnil; +} + + +DEFUN ("posix-file-name-to-mac", Fposix_file_name_to_mac, + Sposix_file_name_to_mac, 1, 1, 0, + doc: /* Convert Posix filename to Mac form. */) + (posix_filename) + Lisp_Object posix_filename; +{ + char mac_filename[MAXPATHLEN+1]; + + CHECK_STRING (posix_filename); + + if (posix_to_mac_pathname (XSTRING (posix_filename)->data, mac_filename, + MAXPATHLEN)) + return build_string (mac_filename); + else + return Qnil; +} + + +/* set interprogram-paste-function to mac-paste-function in mac-win.el + to enable Emacs to obtain the contents of the Mac clipboard. */ +DEFUN ("mac-paste-function", Fmac_paste_function, Smac_paste_function, 0, 0, 0, + doc: /* Return the contents of the Mac clipboard as a string. */) + () +{ +#if TARGET_API_MAC_CARBON + ScrapRef scrap; + ScrapFlavorFlags sff; + Size s; + int i; + char *data; + + if (GetCurrentScrap (&scrap) != noErr) + return Qnil; + + if (GetScrapFlavorFlags (scrap, kScrapFlavorTypeText, &sff) != noErr) + return Qnil; + + if (GetScrapFlavorSize (scrap, kScrapFlavorTypeText, &s) != noErr) + return Qnil; + + if ((data = (char*) alloca (s)) == NULL) + return Qnil; + + if (GetScrapFlavorData (scrap, kScrapFlavorTypeText, &s, data) != noErr + || s == 0) + return Qnil; + + /* Emacs expects clipboard contents have Unix-style eol's */ + for (i = 0; i < s; i++) + if (data[i] == '\r') + data[i] = '\n'; + + return make_string (data, s); +#else /* not TARGET_API_MAC_CARBON */ + Lisp_Object value; + Handle my_handle; + long scrap_offset, rc, i; + + my_handle = NewHandle (0); /* allocate 0-length data area */ + + rc = GetScrap (my_handle, 'TEXT', &scrap_offset); + if (rc < 0) + return Qnil; + + HLock (my_handle); + + /* Emacs expects clipboard contents have Unix-style eol's */ + for (i = 0; i < rc; i++) + if ((*my_handle)[i] == '\r') + (*my_handle)[i] = '\n'; + + value = make_string (*my_handle, rc); + + HUnlock (my_handle); + + DisposeHandle (my_handle); + + return value; +#endif /* not TARGET_API_MAC_CARBON */ +} + + +/* set interprogram-cut-function to mac-cut-function in mac-win.el + to enable Emacs to write the top of the kill-ring to the Mac clipboard. */ +DEFUN ("mac-cut-function", Fmac_cut_function, Smac_cut_function, 1, 2, 0, + doc: /* Put the value of the string parameter to the Mac clipboard. */) + (value, push) + Lisp_Object value, push; +{ + char *buf; + int len, i; + + /* fixme: ignore the push flag for now */ + + CHECK_STRING (value); + + len = XSTRING (value)->size; + buf = (char *) alloca (len+1); + bcopy (XSTRING (value)->data, buf, len); + buf[len] = '\0'; + + /* convert to Mac-style eol's before sending to clipboard */ + for (i = 0; i < len; i++) + if (buf[i] == '\n') + buf[i] = '\r'; + +#if TARGET_API_MAC_CARBON + { + ScrapRef scrap; + ClearCurrentScrap (); + if (GetCurrentScrap (&scrap) != noErr) + error ("cannot get current scrap"); + + if (PutScrapFlavor (scrap, kScrapFlavorTypeText, kScrapFlavorMaskNone, len, + buf) != noErr) + error ("cannot put to scrap"); + } +#else /* not TARGET_API_MAC_CARBON */ + ZeroScrap (); + PutScrap (len, 'TEXT', buf); +#endif /* not TARGET_API_MAC_CARBON */ + + return Qnil; +} + + +DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p, + 0, 1, 0, + doc: /* Whether there is an owner for the given X Selection. +The arg should be the name of the selection in question, typically one of +the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. +(Those are literal upper-case symbol names, since that's what X expects.) +For convenience, the symbol nil is the same as `PRIMARY', +and t is the same as `SECONDARY'. */) + (selection) + Lisp_Object selection; +{ + CHECK_SYMBOL (selection); + + /* Return nil for PRIMARY and SECONDARY selections; for CLIPBOARD, check + if the clipboard currently has valid text format contents. */ + + if (EQ (selection, QCLIPBOARD)) + { + Lisp_Object val = Qnil; + +#if TARGET_API_MAC_CARBON + ScrapRef scrap; + ScrapFlavorFlags sff; + + if (GetCurrentScrap (&scrap) == noErr) + if (GetScrapFlavorFlags (scrap, kScrapFlavorTypeText, &sff) == noErr) + val = Qt; +#else /* not TARGET_API_MAC_CARBON */ + Handle my_handle; + long rc, scrap_offset; + + my_handle = NewHandle (0); + + rc = GetScrap (my_handle, 'TEXT', &scrap_offset); + if (rc >= 0) + val = Qt; + + DisposeHandle (my_handle); +#endif /* not TARGET_API_MAC_CARBON */ + + return val; + } + return Qnil; +} + + +void +syms_of_mac () +{ + QCLIPBOARD = intern ("CLIPBOARD"); + staticpro (&QCLIPBOARD); + + defsubr (&Smac_paste_function); + defsubr (&Smac_cut_function); +#if 0 + defsubr (&Sx_selection_exists_p); +#endif /* 0 */ + + defsubr (&Sdo_applescript); + defsubr (&Smac_file_name_to_posix); + defsubr (&Sposix_file_name_to_mac); +} |