Line data Source code
1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 : #include <stdio.h>
20 : #ifdef UNX
21 : #include <stdlib.h>
22 : #endif
23 : #include <ctype.h>
24 : #include "cppdef.h"
25 : #include "cpp.h"
26 :
27 : #include "time.h" /* BP */
28 :
29 : #include <string.h>
30 :
31 : #if (OSL_DEBUG_LEVEL > 1) && (HOST == SYS_UNIX)
32 : #include <signal.h>
33 : #endif
34 :
35 : /*
36 : * Open a file, add it to the linked list of open files.
37 : * This is called only from openfile() above.
38 : */
39 13626 : int openfile(char* filename)
40 : {
41 : FILE* fp;
42 :
43 13626 : if ((fp = fopen(filename, "r")) == NULL)
44 : {
45 : #if OSL_DEBUG_LEVEL > 1
46 : if ( debug || !bDumpDefs )
47 : perror(filename);
48 : #endif
49 9478 : return (FALSE);
50 : }
51 : #if OSL_DEBUG_LEVEL > 1
52 : if (debug)
53 : fprintf(stderr, "Reading from \"%s\"\n", filename);
54 : #endif
55 4148 : addfile(fp, filename);
56 4148 : return (TRUE);
57 : }
58 :
59 : /*
60 : * Initialize tables for this open file. This is called from openfile()
61 : * above (for #include files), and from the entry to cpp to open the main
62 : * input file. It calls a common routine, getfile() to build the FILEINFO
63 : * structure which is used to read characters. (getfile() is also called
64 : * to setup a macro replacement.)
65 : */
66 4509 : void addfile(FILE* fp, char* filename)
67 : {
68 : FILEINFO* file;
69 :
70 4509 : file = getfile(NBUFF, filename);
71 4509 : file->fp = fp; /* Better remember FILE * */
72 4509 : file->buffer[0] = EOS; /* Initialize for first read */
73 4509 : line = 1; /* Working on line 1 now */
74 4509 : wrongline = TRUE; /* Force out initial #line */
75 4509 : }
76 :
77 : /*
78 : * Append system-specific directories to the include directory list.
79 : * Called only when cpp is started.
80 : */
81 361 : void setincdirs()
82 : {
83 :
84 : #ifdef CPP_INCLUDE
85 : *incend++ = CPP_INCLUDE;
86 : #define IS_INCLUDE 1
87 : #else
88 : #define IS_INCLUDE 0
89 : #endif
90 :
91 : #if HOST == SYS_UNIX
92 361 : *incend++ = "/usr/include";
93 : #define MAXINCLUDE (NINCLUDE - 1 - IS_INCLUDE)
94 : #endif
95 :
96 :
97 : #if HOST == SYS_UNKNOWN
98 : /*
99 : * Kontext: GenMake
100 : * Unter DOS wird nun auch die Environment-Variable INCLUDE ausgewetet.
101 : * Es kommt erschwerend hinzu, dass alle Eintraege, die mit ';' getrennt
102 : * sind, mit in die Liste aufenommen werden muessen.
103 : * Dies wird mit der Funktion strtok() realisiert.
104 : * Vorsicht bei der Benutzung von malloc !!!
105 : * In savestring wird naemlich getmem() verwendet. Vermutlich kommen sich
106 : * die beiden Funktion in die Quere. Als ich malloc statt savestring
107 : * verwendete knallte es in strcpy() !
108 : */
109 :
110 : #if !defined( WNT ) && ! defined UNX
111 : extern char* getenv( char *pStr ); /* BP */
112 : #endif
113 : char* pIncGetEnv = NULL; /* Pointer auf INCLUDE */
114 :
115 : if ( ( pIncGetEnv = getenv("INCLUDE") ) != NULL )
116 : AddInclude( pIncGetEnv );
117 :
118 : #define MAXINCLUDE (NINCLUDE - 3 - IS_INCLUDE)
119 : #endif
120 :
121 361 : }
122 :
123 : /* Kontext: Erweiterung des INCLUDE-Services
124 : * Bislang konnte der cpp keine Include-Angaben in der Kommandozeile
125 : * vertragen, bei denen die directries mit ';' getrennt wurden.
126 : * Dies ist auch verstaendlich, da dieses cpp fuer UNIX-Systeme
127 : * massgeschneidert wurde und in UNI die ';' als Zeichen zum Abschluss
128 : * von Kommandos gilt.
129 : */
130 :
131 4340 : int AddInclude( char* pIncStr )
132 : {
133 4340 : char* pIncEnv = NULL; /* Kopie des INCLUDE */
134 : char* pIncPos; /* wandert zum naechsten */
135 :
136 4340 : pIncEnv = savestring( pIncStr );
137 4340 : pIncPos = strtok( pIncEnv, ";" );
138 :
139 13020 : while( pIncPos != NULL )
140 : {
141 4340 : if (incend >= &incdir[MAXINCLUDE])
142 0 : cfatal("Too many include directories", NULLST);
143 4340 : *incend++ = pIncPos;
144 4340 : pIncPos = strtok( NULL, ";" );
145 : }
146 : /* coverity[leaked_storage] - we know this leaks, but it doesn't matter in this short lived utility */
147 4340 : return 1;
148 : }
149 :
150 : /*
151 : * dooptions is called to process command line arguments (-Detc).
152 : * It is called only at cpp startup.
153 : */
154 361 : int dooptions(int argc, char** argv)
155 : {
156 : char* ap;
157 : DEFBUF* dp;
158 : int c;
159 : int i, j;
160 : char* arg;
161 : SIZES* sizp; /* For -S */
162 : int size; /* For -S */
163 : int isdatum; /* FALSE for -S* */
164 : int endtest; /* For -S */
165 :
166 9033 : for (i = j = 1; i < argc; i++)
167 : {
168 8672 : arg = ap = argv[i];
169 :
170 8672 : if (*ap++ != '-' || *ap == EOS)
171 : {
172 722 : argv[j++] = argv[i];
173 : }
174 : else
175 : {
176 7950 : c = *ap++; /* Option byte */
177 7950 : if (islower(c)) /* Normalize case */
178 0 : c = toupper(c);
179 7950 : switch (c) /* Command character */
180 : {
181 : case 'C': /* Keep comments */
182 0 : cflag = TRUE;
183 0 : keepcomments = TRUE;
184 0 : break;
185 :
186 : case 'D': /* Define symbol */
187 : /*
188 : * If the option is just "-Dfoo", make it -Dfoo=1
189 : */
190 33934 : while (*ap != EOS && *ap != '=')
191 26714 : ap++;
192 3610 : if (*ap == EOS)
193 2888 : ap = "1";
194 : else
195 722 : *ap++ = EOS;
196 : /*
197 : * Now, save the word and its definition.
198 : */
199 3610 : dp = defendel(argv[i] + 2, FALSE);
200 3610 : dp->repl = savestring(ap);
201 3610 : dp->nargs = DEF_NOARGS;
202 3610 : break;
203 :
204 : case 'E': /* Ignore non-fatal */
205 0 : eflag = TRUE; /* errors. */
206 0 : break;
207 :
208 : case 'I': /* Include directory */
209 4340 : AddInclude( ap ); /* BP, 11.09.91 */
210 4340 : break;
211 :
212 : case 'N': /* No predefineds */
213 0 : nflag++; /* Repeat to undefine */
214 0 : break; /* __LINE__, etc. */
215 :
216 : case 'S':
217 0 : sizp = size_table;
218 0 : if (0 != (isdatum = (*ap != '*'))) /* If it's just -S, */
219 0 : endtest = T_FPTR; /* Stop here */
220 : else /* But if it's -S* */
221 : {
222 0 : ap++; /* Step over '*' */
223 0 : endtest = 0; /* Stop at end marker */
224 : }
225 0 : while (sizp->bits != endtest && *ap != EOS)
226 : {
227 0 : if (!isdigit(*ap)) /* Skip to next digit */
228 : {
229 0 : ap++;
230 0 : continue;
231 : }
232 0 : size = 0; /* Compile the value */
233 0 : while (isdigit(*ap))
234 : {
235 0 : size *= 10;
236 0 : size += (*ap++ - '0');
237 : }
238 0 : if (isdatum)
239 0 : sizp->size = size; /* Datum size */
240 : else
241 0 : sizp->psize = size; /* Pointer size */
242 0 : sizp++;
243 : }
244 0 : if (sizp->bits != endtest)
245 0 : cwarn("-S, too few values specified in %s", argv[i]);
246 0 : else if (*ap != EOS)
247 0 : cwarn("-S, too many values, \"%s\" unused", ap);
248 0 : break;
249 :
250 : case 'U': /* Undefine symbol */
251 0 : if (defendel(ap, TRUE) == NULL)
252 0 : cwarn("\"%s\" wasn't defined", ap);
253 0 : break;
254 :
255 : #if OSL_DEBUG_LEVEL > 1
256 : case 'X': /* Debug */
257 : debug = (isdigit(*ap)) ? atoi(ap) : 1;
258 : #if (HOST == SYS_UNIX)
259 : signal(SIGINT, (void (*)(int)) abort); /* Trap "interrupt" */
260 : #endif
261 : fprintf(stderr, "Debug set to %d\n", debug);
262 : break;
263 : #endif
264 :
265 : #if OSL_DEBUG_LEVEL > 1
266 : case 'P': /* #define's dump */
267 : bDumpDefs = 1;
268 : fprintf(stderr, "Dump #define's is on\n");
269 : break;
270 : #endif
271 :
272 : default: /* What is this one? */
273 0 : cwarn("Unknown option \"%s\"", arg);
274 0 : fprintf(stderr, "The following options are valid:\n\
275 : -C\t\t\tWrite source file comments to output\n\
276 : -Dsymbol=value\tDefine a symbol with the given (optional) value\n\
277 : -Idirectory\t\tAdd a directory to the #include search list\n\
278 : -N\t\t\tDon't predefine target-specific names\n\
279 : -Stext\t\tSpecify sizes for #if sizeof\n\
280 : -Usymbol\t\tUndefine symbol\n");
281 : #if OSL_DEBUG_LEVEL > 1
282 : fprintf(stderr, " -Xvalue\t\tSet internal debug flag\n");
283 : fprintf(stderr, " -P\t\t\tdump #define's\n");
284 : #endif
285 0 : break;
286 : } /* Switch on all options */
287 : } /* If it's a -option */
288 : } /* For all arguments */
289 : #if OSL_DEBUG_LEVEL > 1
290 : if ( (bDumpDefs ? j > 4 : j > 3) )
291 : #else
292 361 : if (j > 3)
293 : #endif
294 : {
295 0 : cerror( "Too many file arguments. Usage: cpp [input [output]]",
296 : NULLST);
297 : }
298 361 : return (j); /* Return new argc */
299 : }
300 :
301 361 : int readoptions(char* filename, char*** pfargv)
302 : {
303 : FILE* fp;
304 : int c;
305 361 : int bInQuotes = 0;
306 : char optbuff[1024];
307 : char* poptbuff;
308 361 : int fargc=0;
309 : int back;
310 : char* fargv[PARALIMIT];
311 : char** pfa;
312 :
313 361 : pfa = *pfargv = malloc(sizeof(fargv));
314 :
315 361 : poptbuff = &optbuff[0];
316 361 : filename++;
317 361 : if ((fp = fopen(filename, "r")) == NULL)
318 : {
319 : #if OSL_DEBUG_LEVEL > 1
320 : if ( debug || !bDumpDefs )
321 : perror(filename);
322 : #endif
323 0 : return (FALSE);
324 : }
325 : do
326 : {
327 : /*
328 : * #i27914# double ticks '"' now have a duplicate function:
329 : * 1. they define a string ( e.g. -DFOO="baz" )
330 : * 2. a string can contain spaces, so -DFOO="baz zum" defines one
331 : * argument no two !
332 : */
333 289392 : c = fgetc(fp);
334 289392 : if ( c != ' ' && c != CR && c != NL && c != HT && c != EOF)
335 : {
336 280359 : *poptbuff++ = (char)c;
337 560718 : if( c == '"' )
338 0 : bInQuotes = ~bInQuotes;
339 : }
340 : else
341 : {
342 9033 : if( c != EOF && bInQuotes )
343 0 : *poptbuff++ = (char)c;
344 : else
345 : {
346 9033 : *poptbuff = EOS;
347 9033 : if (optbuff[0] != '\0')
348 : {
349 8672 : pfa[fargc + 1] = strdup(optbuff);
350 8672 : fargc++;
351 8672 : pfa[fargc + 1] = 0;
352 8672 : poptbuff = &optbuff[0];
353 : }
354 : }
355 : }
356 : }
357 289392 : while ( c != EOF );
358 :
359 361 : fclose(fp);
360 361 : back=dooptions(fargc+1,pfa);
361 :
362 361 : return (back);
363 : }
364 :
365 : #if HOST != SYS_UNIX
366 :
367 : /*
368 : * Dec operating systems mangle upper-lower case in command lines.
369 : * This routine forces the -D and -U arguments to uppercase.
370 : * It is called only on cpp startup by dooptions().
371 : */
372 : FILE_LOCAL void zap_uc(char* ap)
373 : {
374 : while (*ap != EOS)
375 : {
376 : /*
377 : * Don't use islower() here so it works with Multinational
378 : */
379 : if (*ap >= 'a' && *ap <= 'z')
380 : *ap = (char)toupper(*ap);
381 : ap++;
382 : }
383 : }
384 : #endif
385 :
386 : /*
387 : * Initialize the built-in #define's. There are two flavors:
388 : * #define decus 1 (static definitions)
389 : * #define __FILE__ ?? (dynamic, evaluated by magic)
390 : * Called only on cpp startup.
391 : *
392 : * Note: the built-in static definitions are suppressed by the -N option.
393 : * __LINE__, __FILE__, and __DATE__ are always present.
394 : */
395 361 : void initdefines()
396 : {
397 : char** pp;
398 : char* tp;
399 : DEFBUF* dp;
400 : int i;
401 : time_t tvec;
402 :
403 : /*
404 : * Predefine the built-in symbols. Allow the
405 : * implementor to pre-define a symbol as "" to
406 : * eliminate it.
407 : */
408 361 : if (nflag == 0)
409 : {
410 722 : for (pp = preset; *pp != NULL; pp++)
411 : {
412 361 : if (*pp[0] != EOS)
413 : {
414 361 : dp = defendel(*pp, FALSE);
415 361 : dp->repl = savestring("1");
416 361 : dp->nargs = DEF_NOARGS;
417 : }
418 : }
419 : }
420 : /*
421 : * The magic pre-defines (__FILE__ and __LINE__ are
422 : * initialized with negative argument counts. expand()
423 : * notices this and calls the appropriate routine.
424 : * DEF_NOARGS is one greater than the first "magic" definition.
425 : */
426 361 : if (nflag < 2)
427 : {
428 1083 : for (pp = magic, i = DEF_NOARGS; *pp != NULL; pp++)
429 : {
430 722 : dp = defendel(*pp, FALSE);
431 722 : dp->nargs = --i;
432 : }
433 : #if OK_DATE
434 : /*
435 : * Define __DATE__ as today's date.
436 : */
437 361 : dp = defendel("__DATE__", FALSE);
438 361 : dp->repl = tp = getmem(27);
439 361 : dp->nargs = DEF_NOARGS;
440 361 : time( &tvec);
441 361 : *tp++ = '"';
442 361 : strcpy(tp, ctime(&tvec));
443 361 : tp[24] = '"'; /* Overwrite newline */
444 : #endif
445 : }
446 361 : }
447 :
448 :
449 :
450 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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