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Diffstat (limited to 'gcc/fixinc/fixfixes.c')
| -rw-r--r-- | gcc/fixinc/fixfixes.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/gcc/fixinc/fixfixes.c b/gcc/fixinc/fixfixes.c new file mode 100644 index 00000000000..805e1db09d1 --- /dev/null +++ b/gcc/fixinc/fixfixes.c @@ -0,0 +1,243 @@ + +/* + + Test to see if a particular fix should be applied to a header file. + + Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. + += = = = = = = = = = = = = = = = = = = = = = = = = + +NOTE TO DEVELOPERS + +The routines you write here must work closely with both the fixincl.c +and the test_need.c program. + +Here are the rules: + +1. Every test procedure name must be suffixed with "_fix". + These routines will be referenced from inclhack.def, sans the suffix. + +2. Use the "FIX_PROC_HEAD()" macro _with_ the "_fix" suffix + (I cannot use the ## magic from ANSI C) for defining your entry point. + +3. Put your test name into the FIXUP_TABLE + +4. Do not read anything from stdin. It is closed. + +5. Write to stderr only in the event of a reportable error + In such an event, call "exit(1)". + +6. If "MAIN" is _not_ defined, then you have access to the fixDescList + entry for the fix in question. This may be useful, for example, + if there are pre-compiled selection expressions stored there. + + For example, you may do this if you know that the first + test contains a useful regex. This is okay because, remember, + this code perforce works closely with the inclhack.def fixes!! + + + tFixDesc* pMyDesc = fixDescList + MY_FIX_NAME_FIXIDX; + tTestDesc* pTestList = pMyDesc->p_test_desc; + + regexec (pTestList->p_test_regex, ...) + + + If MAIN _is_ defined, then you will have to compile it on + your own. + += = = = = = = = = = = = = = = = = = = = = = = = = + +This file is part of GNU CC. + +GNU CC 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 CC 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 CC; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#include "fixlib.h" + +typedef struct { + const char* fix_name; + void (*fix_proc)(); +} fix_entry_t; + +#define FIXUP_TABLE \ + _FT_( "no_double_slash", double_slash_fix ) + + +#define FIX_PROC_HEAD( fix ) \ +static void fix ( filname, text ) \ + const char* filname; \ + char* text; + + +/* + * Skip over a quoted string. Single quote strings may + * contain multiple characters if the first character is + * a backslash. Especially a backslash followed by octal digits. + * We are not doing a correctness syntax check here. + */ +static char* +print_quote( q, text ) + char q; + char* text; +{ + fputc( q, stdout ); + + for (;;) + { + char ch = *(text++); + fputc( ch, stdout ); + + switch (ch) + { + case '\\': + if (*text == NUL) + goto quote_done; + + fputc( *(text++), stdout ); + break; + + case '"': + case '\'': + if (ch != q) + break; + /*FALLTHROUGH*/ + + case '\n': + case NUL: + goto quote_done; + } + } quote_done:; + + return text; +} + + +FIX_PROC_HEAD( double_slash_fix ) +{ + /* Now look for the comment markers in the text */ + for (;;) + { + char ch = *(text++); + switch (ch) + { + case '/': + switch (*text) /* do not advance `text' here */ + { + case '/': + /* + We found a "//" pair in open text. + Delete text to New-Line + */ + while ((*text != '\n') && (*text != '\0')) text++; + break; + + case '*': + { + /* We found a C-style comment. Skip forward to the end */ + char* pz = strstr( (--text)+2, "*/" ); + if (pz == (char*)NULL) + { + fputs( text, stdout ); + goto fix_done; + } + pz += 2; + fwrite (text, (pz - text), 1, stdout ); + text = pz; + } + break; + + default: + fputc (ch, stdout ); + } + break; + + case NUL: + goto fix_done; + + case '"': + case '\'': + text = print_quote (ch, text ); + break; + + default: + fputc (ch, stdout ); + } + + } fix_done:; + + fclose (stdout);; +} + +/* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = + + test for fix selector + + THIS IS THE ONLY EXPORTED ROUTINE + +*/ +void +apply_fix( fixname, filname ) + const char* fixname; + const char* filname; +{ + #define _FT_(n,p) { n, p }, + static fix_entry_t fix_table[] = { FIXUP_TABLE { NULL, NULL }}; + #undef _FT_ + #define FIX_TABLE_CT ((sizeof(fix_table)/sizeof(fix_table[0]))-1) + + char* buf; + int ct = FIX_TABLE_CT; + fix_entry_t* pfe = fix_table; + + for (;;) + { + if (strcmp (pfe->fix_name, fixname) == 0) + break; + if (--ct <= 0) + { + fprintf (stderr, "fixincludes error: the `%s' fix is unknown\n", + fixname ); + exit (3); + } + } + + buf = load_file_data (stdin); + (*pfe->fix_proc)( filname, buf ); +} + +#ifdef MAIN + +/* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = + + MAIN ROUTINE + + This file is both included in fixincl.c and compiled as a separate + program for use by the inclhack.sh script. + +*/ + +int +main( argc, argv ) + int argc; + char** argv; +{ + if (argc != 3) + apply_fix ("No test name provided", NULL, NULL, 0 ); + + apply_fix (argv[2], argv[1]); + return 0; +} + +#endif |