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5abc1f74 | 1 | |
b51207a4 ZW |
2 | /* Install modified versions of certain ANSI-incompatible system header |
3 | files which are fixed to work correctly with ANSI C and placed in a | |
6e6a1681 | 4 | directory that GCC will search. |
b51207a4 | 5 | |
748086b7 | 6 | Copyright (C) 1999, 2000, 2001, 2004, 2009 Free Software Foundation, Inc. |
b51207a4 | 7 | |
6e6a1681 | 8 | This file is part of GCC. |
b51207a4 | 9 | |
6e6a1681 | 10 | GCC is free software; you can redistribute it and/or modify |
b51207a4 | 11 | it under the terms of the GNU General Public License as published by |
748086b7 | 12 | the Free Software Foundation; either version 3, or (at your option) |
b51207a4 ZW |
13 | any later version. |
14 | ||
6e6a1681 | 15 | GCC is distributed in the hope that it will be useful, |
b51207a4 ZW |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
748086b7 JJ |
21 | along with GCC; see the file COPYING3. If not see |
22 | <http://www.gnu.org/licenses/>. */ | |
b51207a4 | 23 | |
5abc1f74 BK |
24 | #include "fixlib.h" |
25 | ||
26 | /* * * * * * * * * * * * * | |
27 | ||
28 | load_file_data loads all the contents of a file into malloc-ed memory. | |
29 | Its argument is the file pointer of the file to read in; the returned | |
30 | result is the NUL terminated contents of the file. The file | |
31 | is presumed to be an ASCII text file containing no NULs. */ | |
32 | ||
33 | char * | |
f4dbf936 | 34 | load_file_data (FILE* fp) |
5abc1f74 BK |
35 | { |
36 | char *pz_data = (char*)NULL; | |
37 | int space_left = -1; /* allow for terminating NUL */ | |
38 | size_t space_used = 0; | |
39 | ||
ca21b4a5 BK |
40 | if (fp == (FILE*)NULL) |
41 | return pz_data; | |
42 | ||
5abc1f74 BK |
43 | do |
44 | { | |
45 | size_t size_read; | |
46 | ||
47 | if (space_left < 1024) | |
48 | { | |
49 | space_left += 4096; | |
03a9fcb8 | 50 | pz_data = XRESIZEVEC (char, pz_data, space_left + space_used + 1 ); |
5abc1f74 BK |
51 | } |
52 | size_read = fread (pz_data + space_used, 1, space_left, fp); | |
53 | ||
54 | if (size_read == 0) | |
55 | { | |
56 | if (feof (fp)) | |
57 | break; | |
58 | ||
59 | if (ferror (fp)) | |
60 | { | |
61 | int err = errno; | |
62 | if (err != EISDIR) | |
63 | fprintf (stderr, "error %d (%s) reading input\n", err, | |
f95e46b9 | 64 | xstrerror (err)); |
5abc1f74 | 65 | free ((void *) pz_data); |
5abc1f74 BK |
66 | return (char *) NULL; |
67 | } | |
68 | } | |
69 | ||
70 | space_left -= size_read; | |
71 | space_used += size_read; | |
72 | } while (! feof (fp)); | |
73 | ||
03a9fcb8 | 74 | pz_data = XRESIZEVEC (char, pz_data, space_used+1 ); |
5abc1f74 | 75 | pz_data[ space_used ] = NUL; |
5abc1f74 BK |
76 | |
77 | return pz_data; | |
78 | } | |
87ad679b | 79 | |
878a5794 | 80 | #ifdef IS_CXX_HEADER_NEEDED |
87ad679b | 81 | t_bool |
f4dbf936 | 82 | is_cxx_header (tCC* fname, tCC* text) |
87ad679b BK |
83 | { |
84 | /* First, check to see if the file is in a C++ directory */ | |
85 | for (;;) | |
86 | { | |
87 | switch (*(fname++)) | |
88 | { | |
89 | case 'C': /* check for "CC/" */ | |
90 | if ((fname[0] == 'C') && (fname[1] == '/')) | |
91 | return BOOL_TRUE; | |
92 | break; | |
93 | ||
94 | case 'x': /* check for "xx/" */ | |
95 | if ((fname[0] == 'x') && (fname[1] == '/')) | |
96 | return BOOL_TRUE; | |
97 | break; | |
98 | ||
99 | case '+': /* check for "++" */ | |
100 | if (fname[0] == '+') | |
101 | return BOOL_TRUE; | |
102 | break; | |
103 | ||
104 | case NUL: | |
105 | goto not_cxx_name; | |
106 | } | |
107 | } not_cxx_name:; | |
108 | ||
5c0d5b94 ZW |
109 | /* Or it might contain one of several phrases which indicate C++ code. |
110 | Currently recognized are: | |
111 | extern "C++" | |
112 | -*- (Mode: )? C++ -*- (emacs mode marker) | |
113 | template < | |
114 | */ | |
87ad679b | 115 | { |
5c0d5b94 ZW |
116 | tSCC cxxpat[] = "\ |
117 | extern[ \t]*\"C\\+\\+\"|\ | |
118 | -\\*-[ \t]*([mM]ode:[ \t]*)?[cC]\\+\\+[; \t]*-\\*-|\ | |
78a0d70c ZW |
119 | template[ \t]*<|\ |
120 | ^[ \t]*class[ \t]|\ | |
121 | (public|private|protected):|\ | |
122 | ^[ \t]*#[ \t]*pragma[ \t]+(interface|implementation)\ | |
123 | "; | |
5c0d5b94 ZW |
124 | static regex_t cxxre; |
125 | static int compiled; | |
126 | ||
127 | if (!compiled) | |
128 | compile_re (cxxpat, &cxxre, 0, "contents check", "is_cxx_header"); | |
129 | ||
ab747408 | 130 | if (xregexec (&cxxre, text, 0, 0, 0) == 0) |
5c0d5b94 ZW |
131 | return BOOL_TRUE; |
132 | } | |
133 | ||
87ad679b BK |
134 | return BOOL_FALSE; |
135 | } | |
878a5794 BK |
136 | #endif /* CXX_TYPE_NEEDED */ |
137 | ||
138 | #ifdef SKIP_QUOTE_NEEDED | |
139 | /* | |
140 | * Skip over a quoted string. Single quote strings may | |
141 | * contain multiple characters if the first character is | |
142 | * a backslash. Especially a backslash followed by octal digits. | |
143 | * We are not doing a correctness syntax check here. | |
144 | */ | |
145 | tCC* | |
f4dbf936 | 146 | skip_quote(char q, char* text ) |
878a5794 BK |
147 | { |
148 | for (;;) | |
149 | { | |
150 | char ch = *(text++); | |
151 | switch (ch) | |
152 | { | |
153 | case '\\': | |
154 | text++; /* skip over whatever character follows */ | |
155 | break; | |
156 | ||
157 | case '"': | |
158 | case '\'': | |
159 | if (ch != q) | |
160 | break; | |
161 | /*FALLTHROUGH*/ | |
162 | ||
163 | case '\n': | |
164 | case NUL: | |
165 | goto skip_done; | |
166 | } | |
167 | } skip_done:; | |
168 | ||
169 | return text; | |
170 | } | |
171 | #endif /* SKIP_QUOTE_NEEDED */ | |
b51207a4 ZW |
172 | |
173 | /* * * * * * * * * * * * * | |
174 | ||
175 | Compile one regular expression pattern for later use. PAT contains | |
176 | the pattern, RE points to a regex_t structure (which should have | |
177 | been bzeroed). MATCH is 1 if we need to know where the regex | |
ab747408 | 178 | matched, 0 if not. If xregcomp fails, prints an error message and |
b51207a4 ZW |
179 | aborts; E1 and E2 are strings to shove into the error message. |
180 | ||
181 | The patterns we search for are all egrep patterns. | |
182 | REG_EXTENDED|REG_NEWLINE produces identical regex syntax/semantics | |
183 | to egrep (verified from 4.4BSD Programmer's Reference Manual). */ | |
184 | void | |
f4dbf936 | 185 | compile_re( tCC* pat, regex_t* re, int match, tCC* e1, tCC* e2 ) |
b51207a4 ZW |
186 | { |
187 | tSCC z_bad_comp[] = "fixincl ERROR: cannot compile %s regex for %s\n\ | |
188 | \texpr = `%s'\n\terror %s\n"; | |
189 | int flags, err; | |
190 | ||
191 | flags = (match ? REG_EXTENDED|REG_NEWLINE | |
192 | : REG_EXTENDED|REG_NEWLINE|REG_NOSUB); | |
ab747408 | 193 | err = xregcomp (re, pat, flags); |
b51207a4 ZW |
194 | |
195 | if (err) | |
196 | { | |
197 | char rerrbuf[1024]; | |
198 | regerror (err, re, rerrbuf, 1024); | |
199 | fprintf (stderr, z_bad_comp, e1, e2, pat, rerrbuf); | |
200 | exit (EXIT_FAILURE); | |
201 | } | |
202 | } | |
52c207e2 ZW |
203 | |
204 | /* * * * * * * * * * * * * | |
205 | ||
89b8abbf | 206 | Helper routine and data for the machine_name test and fix. */ |
52c207e2 ZW |
207 | |
208 | tSCC mn_label_pat[] = "^[ \t]*#[ \t]*(if|ifdef|ifndef)[ \t]+"; | |
209 | static regex_t mn_label_re; | |
52c207e2 ZW |
210 | static regex_t mn_name_re; |
211 | ||
212 | static int mn_compiled = 0; | |
213 | ||
89b8abbf | 214 | t_bool |
f4dbf936 | 215 | mn_get_regexps(regex_t** label_re, regex_t** name_re, tCC* who ) |
52c207e2 | 216 | { |
89b8abbf PB |
217 | if (! pz_mn_name_pat) |
218 | return BOOL_FALSE; | |
219 | ||
52c207e2 ZW |
220 | if (! mn_compiled) |
221 | { | |
222 | compile_re (mn_label_pat, &mn_label_re, 1, "label pattern", who); | |
89b8abbf | 223 | compile_re (pz_mn_name_pat, &mn_name_re, 1, "name pattern", who); |
52c207e2 ZW |
224 | mn_compiled++; |
225 | } | |
226 | *label_re = &mn_label_re; | |
227 | *name_re = &mn_name_re; | |
89b8abbf | 228 | return BOOL_TRUE; |
52c207e2 | 229 | } |
62a99405 BK |
230 | |
231 | ||
283da1d3 | 232 | #ifdef SEPARATE_FIX_PROC |
62a99405 BK |
233 | |
234 | char* | |
f4dbf936 | 235 | make_raw_shell_str( char* pz_d, tCC* pz_s, size_t smax ) |
62a99405 BK |
236 | { |
237 | tSCC zQ[] = "'\\''"; | |
238 | size_t dtaSize; | |
239 | char* pz_d_start = pz_d; | |
240 | ||
241 | smax--; /* adjust for trailing NUL */ | |
242 | ||
243 | dtaSize = strlen( pz_s ) + 3; | |
244 | ||
245 | { | |
246 | const char* pz = pz_s - 1; | |
247 | ||
248 | for (;;) { | |
249 | pz = strchr( pz+1, '\'' ); | |
250 | if (pz == (char*)NULL) | |
251 | break; | |
252 | dtaSize += sizeof( zQ )-1; | |
253 | } | |
254 | } | |
255 | if (dtaSize > smax) | |
256 | return (char*)NULL; | |
257 | ||
258 | *(pz_d++) = '\''; | |
259 | ||
260 | for (;;) { | |
7f98ca22 | 261 | if ((size_t) (pz_d - pz_d_start) >= smax) |
62a99405 BK |
262 | return (char*)NULL; |
263 | switch (*(pz_d++) = *(pz_s++)) { | |
264 | case NUL: | |
265 | goto loopDone; | |
266 | ||
267 | case '\'': | |
9ae83b84 | 268 | if ((size_t) (pz_d - pz_d_start) >= smax - sizeof( zQ )-1) |
62a99405 BK |
269 | return (char*)NULL; |
270 | strcpy( pz_d-1, zQ ); | |
271 | pz_d += sizeof( zQ )-2; | |
272 | } | |
273 | } loopDone:; | |
274 | pz_d[-1] = '\''; | |
275 | *pz_d = NUL; | |
276 | ||
277 | return pz_d; | |
278 | } | |
279 | ||
280 | #endif | |
716028e4 TK |
281 | |
282 | #if defined(__MINGW32__) | |
283 | void | |
284 | fix_path_separators (char* p) | |
285 | { | |
286 | while (p != NULL) | |
287 | { | |
288 | p = strchr (p, '\\'); | |
289 | if (p != NULL) | |
290 | { | |
291 | *p = '/'; | |
292 | ++p; | |
293 | } | |
294 | } | |
295 | } | |
296 | ||
297 | /* Count number of needle character ocurrences in str */ | |
298 | static int | |
299 | count_occurrences_of_char (char* str, char needle) | |
300 | { | |
301 | int cnt = 0; | |
302 | ||
303 | while (str) | |
304 | { | |
305 | str = strchr (str, needle); | |
306 | if (str) | |
307 | { | |
308 | ++str; | |
309 | ++cnt; | |
310 | } | |
311 | } | |
312 | ||
313 | return cnt; | |
314 | } | |
315 | ||
316 | /* On Mingw32, system function will just start cmd by default. | |
317 | Call system function, but prepend ${CONFIG_SHELL} or ${SHELL} -c to the command, | |
318 | replace newlines with '$'\n'', enclose command with double quotes | |
319 | and escape special characters which were originally enclosed in single quotes. | |
320 | */ | |
321 | int | |
322 | system_with_shell (char* s) | |
323 | { | |
324 | static const char z_shell_start_args[] = " -c \""; | |
325 | static const char z_shell_end_args[] = "\""; | |
326 | static const char z_shell_newline[] = "'$'\\n''"; | |
327 | ||
328 | /* Use configured shell if present */ | |
329 | char *env_shell = getenv ("CONFIG_SHELL"); | |
330 | int newline_cnt = count_occurrences_of_char (s, '\n'); | |
331 | int escapes_cnt = count_occurrences_of_char( s, '\\') | |
332 | + count_occurrences_of_char (s, '"') | |
333 | + count_occurrences_of_char (s, '`'); | |
334 | char *long_cmd; | |
335 | char *cmd_endp; | |
336 | int sys_result; | |
337 | char *s_scan; | |
338 | int in_quotes; | |
339 | ||
340 | if (env_shell == NULL) | |
341 | env_shell = getenv ("SHELL"); | |
342 | ||
343 | /* If neither CONFIGURED_SHELL nor SHELL is set, just call standard system function */ | |
344 | if (env_shell == NULL) | |
345 | return system (s); | |
346 | ||
347 | /* Allocate enough memory to fit newly created command string */ | |
348 | long_cmd = XNEWVEC (char, strlen (env_shell) | |
349 | + strlen (z_shell_start_args) | |
350 | + strlen (s) | |
351 | + newline_cnt * (strlen (z_shell_newline) - 1) | |
352 | + escapes_cnt | |
353 | + strlen (z_shell_end_args) | |
354 | + 1); | |
355 | ||
356 | /* Start with ${SHELL} */ | |
357 | strcpy (long_cmd, env_shell); | |
358 | cmd_endp = long_cmd + strlen (long_cmd); | |
359 | ||
360 | /* Opening quote */ | |
361 | strcpy (cmd_endp, z_shell_start_args); | |
362 | cmd_endp += strlen (z_shell_start_args); | |
363 | ||
364 | /* Replace newlines and escape special chars */ | |
365 | in_quotes = 0; | |
366 | for (s_scan = s; *s_scan; ++s_scan) | |
367 | { | |
368 | switch (*s_scan) | |
369 | { | |
370 | case '\n': | |
371 | if (in_quotes) | |
372 | { | |
373 | /* Replace newline inside quotes with '$'\n'' */ | |
374 | strcpy (cmd_endp, z_shell_newline); | |
375 | cmd_endp += strlen (z_shell_newline); | |
376 | } | |
377 | else | |
378 | { | |
379 | /* Replace newlines outside quotes with ; and merge subsequent newlines */ | |
380 | *(cmd_endp++) = ';'; | |
381 | *(cmd_endp++) = ' '; | |
382 | while (*(s_scan + 1) == '\n' || *(s_scan + 1) == ' ' || *(s_scan + 1) == '\t') | |
383 | ++s_scan; | |
384 | } | |
385 | break; | |
386 | case '\'': | |
387 | /* Escape single quote and toggle in_quotes flag */ | |
388 | in_quotes = !in_quotes; | |
389 | *(cmd_endp++) = *s_scan; | |
390 | break; | |
391 | case '\\': | |
392 | case '`': | |
393 | /* Escape backslash and backtick inside quotes */ | |
394 | if (in_quotes) | |
395 | *(cmd_endp++) = '\\'; | |
396 | *(cmd_endp++) = *s_scan; | |
397 | break; | |
398 | case '"': | |
399 | /* Escape double quotes always */ | |
400 | *(cmd_endp++) = '\\'; | |
401 | *(cmd_endp++) = *s_scan; | |
402 | break; | |
403 | default: | |
404 | *(cmd_endp++) = *s_scan; | |
405 | } | |
406 | } | |
407 | ||
408 | /* Closing quote */ | |
409 | strcpy (cmd_endp, z_shell_end_args); | |
410 | ||
411 | sys_result = system (long_cmd); | |
412 | ||
413 | free (long_cmd); | |
414 | ||
415 | return sys_result; | |
416 | } | |
417 | ||
418 | #endif /* defined(__MINGW32__) */ |