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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 | |
6e6a1681 | 6 | Copyright (C) 1999, 2000, 2001 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 ZW |
11 | it under the terms of the GNU General Public License as published by |
12 | the Free Software Foundation; either version 2, or (at your option) | |
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 | |
6e6a1681 | 21 | along with GCC; see the file COPYING. If not, write to |
b51207a4 ZW |
22 | the Free Software Foundation, 59 Temple Place - Suite 330, |
23 | Boston, MA 02111-1307, USA. */ | |
24 | ||
5abc1f74 BK |
25 | #include "fixlib.h" |
26 | ||
27 | /* * * * * * * * * * * * * | |
28 | ||
29 | load_file_data loads all the contents of a file into malloc-ed memory. | |
30 | Its argument is the file pointer of the file to read in; the returned | |
31 | result is the NUL terminated contents of the file. The file | |
32 | is presumed to be an ASCII text file containing no NULs. */ | |
33 | ||
34 | char * | |
f4dbf936 | 35 | load_file_data (FILE* fp) |
5abc1f74 BK |
36 | { |
37 | char *pz_data = (char*)NULL; | |
38 | int space_left = -1; /* allow for terminating NUL */ | |
39 | size_t space_used = 0; | |
40 | ||
ca21b4a5 BK |
41 | if (fp == (FILE*)NULL) |
42 | return pz_data; | |
43 | ||
5abc1f74 BK |
44 | do |
45 | { | |
46 | size_t size_read; | |
47 | ||
48 | if (space_left < 1024) | |
49 | { | |
50 | space_left += 4096; | |
c68b0a84 | 51 | pz_data = xrealloc (pz_data, space_left + space_used + 1 ); |
5abc1f74 BK |
52 | } |
53 | size_read = fread (pz_data + space_used, 1, space_left, fp); | |
54 | ||
55 | if (size_read == 0) | |
56 | { | |
57 | if (feof (fp)) | |
58 | break; | |
59 | ||
60 | if (ferror (fp)) | |
61 | { | |
62 | int err = errno; | |
63 | if (err != EISDIR) | |
64 | fprintf (stderr, "error %d (%s) reading input\n", err, | |
f95e46b9 | 65 | xstrerror (err)); |
5abc1f74 | 66 | free ((void *) pz_data); |
5abc1f74 BK |
67 | return (char *) NULL; |
68 | } | |
69 | } | |
70 | ||
71 | space_left -= size_read; | |
72 | space_used += size_read; | |
73 | } while (! feof (fp)); | |
74 | ||
c68b0a84 | 75 | pz_data = xrealloc (pz_data, space_used+1 ); |
5abc1f74 | 76 | pz_data[ space_used ] = NUL; |
5abc1f74 BK |
77 | |
78 | return pz_data; | |
79 | } | |
87ad679b | 80 | |
878a5794 | 81 | #ifdef IS_CXX_HEADER_NEEDED |
87ad679b | 82 | t_bool |
f4dbf936 | 83 | is_cxx_header (tCC* fname, tCC* text) |
87ad679b BK |
84 | { |
85 | /* First, check to see if the file is in a C++ directory */ | |
86 | for (;;) | |
87 | { | |
88 | switch (*(fname++)) | |
89 | { | |
90 | case 'C': /* check for "CC/" */ | |
91 | if ((fname[0] == 'C') && (fname[1] == '/')) | |
92 | return BOOL_TRUE; | |
93 | break; | |
94 | ||
95 | case 'x': /* check for "xx/" */ | |
96 | if ((fname[0] == 'x') && (fname[1] == '/')) | |
97 | return BOOL_TRUE; | |
98 | break; | |
99 | ||
100 | case '+': /* check for "++" */ | |
101 | if (fname[0] == '+') | |
102 | return BOOL_TRUE; | |
103 | break; | |
104 | ||
105 | case NUL: | |
106 | goto not_cxx_name; | |
107 | } | |
108 | } not_cxx_name:; | |
109 | ||
5c0d5b94 ZW |
110 | /* Or it might contain one of several phrases which indicate C++ code. |
111 | Currently recognized are: | |
112 | extern "C++" | |
113 | -*- (Mode: )? C++ -*- (emacs mode marker) | |
114 | template < | |
115 | */ | |
87ad679b | 116 | { |
5c0d5b94 ZW |
117 | tSCC cxxpat[] = "\ |
118 | extern[ \t]*\"C\\+\\+\"|\ | |
119 | -\\*-[ \t]*([mM]ode:[ \t]*)?[cC]\\+\\+[; \t]*-\\*-|\ | |
78a0d70c ZW |
120 | template[ \t]*<|\ |
121 | ^[ \t]*class[ \t]|\ | |
122 | (public|private|protected):|\ | |
123 | ^[ \t]*#[ \t]*pragma[ \t]+(interface|implementation)\ | |
124 | "; | |
5c0d5b94 ZW |
125 | static regex_t cxxre; |
126 | static int compiled; | |
127 | ||
128 | if (!compiled) | |
129 | compile_re (cxxpat, &cxxre, 0, "contents check", "is_cxx_header"); | |
130 | ||
ab747408 | 131 | if (xregexec (&cxxre, text, 0, 0, 0) == 0) |
5c0d5b94 ZW |
132 | return BOOL_TRUE; |
133 | } | |
134 | ||
87ad679b BK |
135 | return BOOL_FALSE; |
136 | } | |
878a5794 BK |
137 | #endif /* CXX_TYPE_NEEDED */ |
138 | ||
139 | #ifdef SKIP_QUOTE_NEEDED | |
140 | /* | |
141 | * Skip over a quoted string. Single quote strings may | |
142 | * contain multiple characters if the first character is | |
143 | * a backslash. Especially a backslash followed by octal digits. | |
144 | * We are not doing a correctness syntax check here. | |
145 | */ | |
146 | tCC* | |
f4dbf936 | 147 | skip_quote(char q, char* text ) |
878a5794 BK |
148 | { |
149 | for (;;) | |
150 | { | |
151 | char ch = *(text++); | |
152 | switch (ch) | |
153 | { | |
154 | case '\\': | |
155 | text++; /* skip over whatever character follows */ | |
156 | break; | |
157 | ||
158 | case '"': | |
159 | case '\'': | |
160 | if (ch != q) | |
161 | break; | |
162 | /*FALLTHROUGH*/ | |
163 | ||
164 | case '\n': | |
165 | case NUL: | |
166 | goto skip_done; | |
167 | } | |
168 | } skip_done:; | |
169 | ||
170 | return text; | |
171 | } | |
172 | #endif /* SKIP_QUOTE_NEEDED */ | |
b51207a4 ZW |
173 | |
174 | /* * * * * * * * * * * * * | |
175 | ||
176 | Compile one regular expression pattern for later use. PAT contains | |
177 | the pattern, RE points to a regex_t structure (which should have | |
178 | been bzeroed). MATCH is 1 if we need to know where the regex | |
ab747408 | 179 | matched, 0 if not. If xregcomp fails, prints an error message and |
b51207a4 ZW |
180 | aborts; E1 and E2 are strings to shove into the error message. |
181 | ||
182 | The patterns we search for are all egrep patterns. | |
183 | REG_EXTENDED|REG_NEWLINE produces identical regex syntax/semantics | |
184 | to egrep (verified from 4.4BSD Programmer's Reference Manual). */ | |
185 | void | |
f4dbf936 | 186 | compile_re( tCC* pat, regex_t* re, int match, tCC* e1, tCC* e2 ) |
b51207a4 ZW |
187 | { |
188 | tSCC z_bad_comp[] = "fixincl ERROR: cannot compile %s regex for %s\n\ | |
189 | \texpr = `%s'\n\terror %s\n"; | |
190 | int flags, err; | |
191 | ||
192 | flags = (match ? REG_EXTENDED|REG_NEWLINE | |
193 | : REG_EXTENDED|REG_NEWLINE|REG_NOSUB); | |
ab747408 | 194 | err = xregcomp (re, pat, flags); |
b51207a4 ZW |
195 | |
196 | if (err) | |
197 | { | |
198 | char rerrbuf[1024]; | |
199 | regerror (err, re, rerrbuf, 1024); | |
200 | fprintf (stderr, z_bad_comp, e1, e2, pat, rerrbuf); | |
201 | exit (EXIT_FAILURE); | |
202 | } | |
203 | } | |
52c207e2 ZW |
204 | |
205 | /* * * * * * * * * * * * * | |
206 | ||
207 | Helper routine and data for the machine_name test and fix. | |
208 | machname.h is created by black magic in the Makefile. */ | |
209 | ||
bff0dc38 | 210 | #ifdef MN_NAME_PAT |
52c207e2 ZW |
211 | |
212 | tSCC mn_label_pat[] = "^[ \t]*#[ \t]*(if|ifdef|ifndef)[ \t]+"; | |
213 | static regex_t mn_label_re; | |
214 | ||
215 | tSCC mn_name_pat[] = MN_NAME_PAT; | |
216 | static regex_t mn_name_re; | |
217 | ||
218 | static int mn_compiled = 0; | |
219 | ||
bff0dc38 | 220 | void |
f4dbf936 | 221 | mn_get_regexps(regex_t** label_re, regex_t** name_re, tCC* who ) |
52c207e2 ZW |
222 | { |
223 | if (! mn_compiled) | |
224 | { | |
225 | compile_re (mn_label_pat, &mn_label_re, 1, "label pattern", who); | |
226 | compile_re (mn_name_pat, &mn_name_re, 1, "name pattern", who); | |
227 | mn_compiled++; | |
228 | } | |
229 | *label_re = &mn_label_re; | |
230 | *name_re = &mn_name_re; | |
231 | } | |
bff0dc38 | 232 | #endif |
62a99405 BK |
233 | |
234 | ||
283da1d3 | 235 | #ifdef SEPARATE_FIX_PROC |
62a99405 BK |
236 | |
237 | char* | |
f4dbf936 | 238 | make_raw_shell_str( char* pz_d, tCC* pz_s, size_t smax ) |
62a99405 BK |
239 | { |
240 | tSCC zQ[] = "'\\''"; | |
241 | size_t dtaSize; | |
242 | char* pz_d_start = pz_d; | |
243 | ||
244 | smax--; /* adjust for trailing NUL */ | |
245 | ||
246 | dtaSize = strlen( pz_s ) + 3; | |
247 | ||
248 | { | |
249 | const char* pz = pz_s - 1; | |
250 | ||
251 | for (;;) { | |
252 | pz = strchr( pz+1, '\'' ); | |
253 | if (pz == (char*)NULL) | |
254 | break; | |
255 | dtaSize += sizeof( zQ )-1; | |
256 | } | |
257 | } | |
258 | if (dtaSize > smax) | |
259 | return (char*)NULL; | |
260 | ||
261 | *(pz_d++) = '\''; | |
262 | ||
263 | for (;;) { | |
264 | if (pz_d - pz_d_start >= smax) | |
265 | return (char*)NULL; | |
266 | switch (*(pz_d++) = *(pz_s++)) { | |
267 | case NUL: | |
268 | goto loopDone; | |
269 | ||
270 | case '\'': | |
271 | if (pz_d - pz_d_start >= smax - sizeof( zQ )-1) | |
272 | return (char*)NULL; | |
273 | strcpy( pz_d-1, zQ ); | |
274 | pz_d += sizeof( zQ )-2; | |
275 | } | |
276 | } loopDone:; | |
277 | pz_d[-1] = '\''; | |
278 | *pz_d = NUL; | |
279 | ||
280 | return pz_d; | |
281 | } | |
282 | ||
283 | #endif |