1 /*
2 util.h - utility functions
3 Copyright (C) 2016-present, Przemyslaw Skibinski, Yann Collet
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #ifndef UTIL_H_MODULE
21 #define UTIL_H_MODULE
22
23 #if defined (__cplusplus)
24 extern "C" {
25 #endif
26
27
28
29 /*-****************************************
30 * Dependencies
31 ******************************************/
32 #include "platform.h" /* PLATFORM_POSIX_VERSION */
33 #include <stddef.h> /* size_t, ptrdiff_t */
34 #include <stdlib.h> /* malloc */
35 #include <string.h> /* strlen, strncpy */
36 #include <stdio.h> /* fprintf */
37 #include <assert.h>
38 #include <sys/types.h> /* stat, utime */
39 #include <sys/stat.h> /* stat */
40 #if defined(_MSC_VER)
41 # include <sys/utime.h> /* utime */
42 # include <io.h> /* _chmod */
43 #else
44 # include <unistd.h> /* chown, stat */
45 # include <utime.h> /* utime */
46 #endif
47 #include <time.h> /* time */
48 #include <limits.h> /* INT_MAX */
49 #include <errno.h>
50
51
52
53 /*-**************************************************************
54 * Basic Types
55 *****************************************************************/
56 #if !defined (__VMS) && (defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
57 # include <stdint.h>
58 typedef uint8_t BYTE;
59 typedef uint16_t U16;
60 typedef int16_t S16;
61 typedef uint32_t U32;
62 typedef int32_t S32;
63 typedef uint64_t U64;
64 typedef int64_t S64;
65 #else
66 typedef unsigned char BYTE;
67 typedef unsigned short U16;
68 typedef signed short S16;
69 typedef unsigned int U32;
70 typedef signed int S32;
71 typedef unsigned long long U64;
72 typedef signed long long S64;
73 #endif
74
75
76 /* ************************************************************
77 * Avoid fseek()'s 2GiB barrier with MSVC, MacOS, *BSD, MinGW
78 ***************************************************************/
79 #if defined(_MSC_VER) && (_MSC_VER >= 1400)
80 # define UTIL_fseek _fseeki64
81 #elif !defined(__64BIT__) && (PLATFORM_POSIX_VERSION >= 200112L) /* No point defining Large file for 64 bit */
82 # define UTIL_fseek fseeko
83 #elif defined(__MINGW32__) && defined(__MSVCRT__) && !defined(__STRICT_ANSI__) && !defined(__NO_MINGW_LFS)
84 # define UTIL_fseek fseeko64
85 #else
86 # define UTIL_fseek fseek
87 #endif
88
89
90 /*-****************************************
91 * Sleep functions: Windows - Posix - others
92 ******************************************/
93 #if defined(_WIN32)
94 # include <windows.h>
95 # define SET_REALTIME_PRIORITY SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS)
96 # define UTIL_sleep(s) Sleep(1000*s)
97 # define UTIL_sleepMilli(milli) Sleep(milli)
98 #elif PLATFORM_POSIX_VERSION >= 0 /* Unix-like operating system */
99 # include <unistd.h>
100 # include <sys/resource.h> /* setpriority */
101 # include <time.h> /* clock_t, nanosleep, clock, CLOCKS_PER_SEC */
102 # if defined(PRIO_PROCESS)
103 # define SET_REALTIME_PRIORITY setpriority(PRIO_PROCESS, 0, -20)
104 # else
105 # define SET_REALTIME_PRIORITY /* disabled */
106 # endif
107 # define UTIL_sleep(s) sleep(s)
108 # if (defined(__linux__) && (PLATFORM_POSIX_VERSION >= 199309L)) || (PLATFORM_POSIX_VERSION >= 200112L) /* nanosleep requires POSIX.1-2001 */
109 # define UTIL_sleepMilli(milli) { struct timespec t; t.tv_sec=0; t.tv_nsec=milli*1000000ULL; nanosleep(&t, NULL); }
110 # else
111 # define UTIL_sleepMilli(milli) /* disabled */
112 # endif
113 #else
114 # define SET_REALTIME_PRIORITY /* disabled */
115 # define UTIL_sleep(s) /* disabled */
116 # define UTIL_sleepMilli(milli) /* disabled */
117 #endif
118
119
120 /* *************************************
121 * Constants
122 ***************************************/
123 #define LIST_SIZE_INCREASE (8*1024)
124
125
126 /*-****************************************
127 * Compiler specifics
128 ******************************************/
129 #if defined(__INTEL_COMPILER)
130 # pragma warning(disable : 177) /* disable: message #177: function was declared but never referenced, useful with UTIL_STATIC */
131 #endif
132 #if defined(__GNUC__)
133 # define UTIL_STATIC static __attribute__((unused))
134 #elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
135 # define UTIL_STATIC static inline
136 #elif defined(_MSC_VER)
137 # define UTIL_STATIC static __inline
138 #else
139 # define UTIL_STATIC static /* this version may generate warnings for unused static functions; disable the relevant warning */
140 #endif
141
142
143 /*-****************************************
144 * Time functions
145 ******************************************/
146 #if defined(_WIN32) /* Windows */
147
148 typedef LARGE_INTEGER UTIL_time_t;
UTIL_getTime(void)149 UTIL_STATIC UTIL_time_t UTIL_getTime(void) { UTIL_time_t x; QueryPerformanceCounter(&x); return x; }
UTIL_getSpanTimeMicro(UTIL_time_t clockStart,UTIL_time_t clockEnd)150 UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd)
151 {
152 static LARGE_INTEGER ticksPerSecond;
153 static int init = 0;
154 if (!init) {
155 if (!QueryPerformanceFrequency(&ticksPerSecond))
156 fprintf(stderr, "ERROR: QueryPerformanceFrequency() failure\n");
157 init = 1;
158 }
159 return 1000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart;
160 }
UTIL_getSpanTimeNano(UTIL_time_t clockStart,UTIL_time_t clockEnd)161 UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd)
162 {
163 static LARGE_INTEGER ticksPerSecond;
164 static int init = 0;
165 if (!init) {
166 if (!QueryPerformanceFrequency(&ticksPerSecond))
167 fprintf(stderr, "ERROR: QueryPerformanceFrequency() failure\n");
168 init = 1;
169 }
170 return 1000000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart;
171 }
172
173 #elif defined(__APPLE__) && defined(__MACH__)
174
175 #include <mach/mach_time.h>
176 typedef U64 UTIL_time_t;
UTIL_getTime(void)177 UTIL_STATIC UTIL_time_t UTIL_getTime(void) { return mach_absolute_time(); }
UTIL_getSpanTimeMicro(UTIL_time_t clockStart,UTIL_time_t clockEnd)178 UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd)
179 {
180 static mach_timebase_info_data_t rate;
181 static int init = 0;
182 if (!init) {
183 mach_timebase_info(&rate);
184 init = 1;
185 }
186 return (((clockEnd - clockStart) * (U64)rate.numer) / ((U64)rate.denom)) / 1000ULL;
187 }
UTIL_getSpanTimeNano(UTIL_time_t clockStart,UTIL_time_t clockEnd)188 UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd)
189 {
190 static mach_timebase_info_data_t rate;
191 static int init = 0;
192 if (!init) {
193 mach_timebase_info(&rate);
194 init = 1;
195 }
196 return ((clockEnd - clockStart) * (U64)rate.numer) / ((U64)rate.denom);
197 }
198
199 #elif (PLATFORM_POSIX_VERSION >= 200112L) && (defined __UCLIBC__ || (defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 17) || __GLIBC__ > 2) ) )
200
201 #include <time.h>
202 typedef struct timespec UTIL_time_t;
UTIL_getTime(void)203 UTIL_STATIC UTIL_time_t UTIL_getTime(void)
204 {
205 UTIL_time_t now;
206 if (clock_gettime(CLOCK_MONOTONIC, &now))
207 fprintf(stderr, "ERROR: Failed to get time\n"); /* we could also exit() */
208 return now;
209 }
UTIL_getSpanTime(UTIL_time_t begin,UTIL_time_t end)210 UTIL_STATIC UTIL_time_t UTIL_getSpanTime(UTIL_time_t begin, UTIL_time_t end)
211 {
212 UTIL_time_t diff;
213 if (end.tv_nsec < begin.tv_nsec) {
214 diff.tv_sec = (end.tv_sec - 1) - begin.tv_sec;
215 diff.tv_nsec = (end.tv_nsec + 1000000000ULL) - begin.tv_nsec;
216 } else {
217 diff.tv_sec = end.tv_sec - begin.tv_sec;
218 diff.tv_nsec = end.tv_nsec - begin.tv_nsec;
219 }
220 return diff;
221 }
UTIL_getSpanTimeMicro(UTIL_time_t begin,UTIL_time_t end)222 UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_time_t begin, UTIL_time_t end)
223 {
224 UTIL_time_t const diff = UTIL_getSpanTime(begin, end);
225 U64 micro = 0;
226 micro += 1000000ULL * diff.tv_sec;
227 micro += diff.tv_nsec / 1000ULL;
228 return micro;
229 }
UTIL_getSpanTimeNano(UTIL_time_t begin,UTIL_time_t end)230 UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_time_t begin, UTIL_time_t end)
231 {
232 UTIL_time_t const diff = UTIL_getSpanTime(begin, end);
233 U64 nano = 0;
234 nano += 1000000000ULL * diff.tv_sec;
235 nano += diff.tv_nsec;
236 return nano;
237 }
238
239 #else /* relies on standard C (note : clock_t measurements can be wrong when using multi-threading) */
240
241 typedef clock_t UTIL_time_t;
UTIL_getTime(void)242 UTIL_STATIC UTIL_time_t UTIL_getTime(void) { return clock(); }
UTIL_getSpanTimeMicro(UTIL_time_t clockStart,UTIL_time_t clockEnd)243 UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; }
UTIL_getSpanTimeNano(UTIL_time_t clockStart,UTIL_time_t clockEnd)244 UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; }
245 #endif
246
247
248 /* returns time span in microseconds */
UTIL_clockSpanMicro(UTIL_time_t clockStart)249 UTIL_STATIC U64 UTIL_clockSpanMicro(UTIL_time_t clockStart)
250 {
251 UTIL_time_t const clockEnd = UTIL_getTime();
252 return UTIL_getSpanTimeMicro(clockStart, clockEnd);
253 }
254
255 /* returns time span in nanoseconds */
UTIL_clockSpanNano(UTIL_time_t clockStart)256 UTIL_STATIC U64 UTIL_clockSpanNano(UTIL_time_t clockStart)
257 {
258 UTIL_time_t const clockEnd = UTIL_getTime();
259 return UTIL_getSpanTimeNano(clockStart, clockEnd);
260 }
261
UTIL_waitForNextTick(void)262 UTIL_STATIC void UTIL_waitForNextTick(void)
263 {
264 UTIL_time_t const clockStart = UTIL_getTime();
265 UTIL_time_t clockEnd;
266 do {
267 clockEnd = UTIL_getTime();
268 } while (UTIL_getSpanTimeNano(clockStart, clockEnd) == 0);
269 }
270
271
272
273 /*-****************************************
274 * File functions
275 ******************************************/
276 #if defined(_MSC_VER)
277 #define chmod _chmod
278 typedef struct __stat64 stat_t;
279 #else
280 typedef struct stat stat_t;
281 #endif
282
283
284 UTIL_STATIC int UTIL_isRegFile(const char* infilename);
285
286
UTIL_setFileStat(const char * filename,stat_t * statbuf)287 UTIL_STATIC int UTIL_setFileStat(const char *filename, stat_t *statbuf)
288 {
289 int res = 0;
290 struct utimbuf timebuf;
291
292 if (!UTIL_isRegFile(filename))
293 return -1;
294
295 timebuf.actime = time(NULL);
296 timebuf.modtime = statbuf->st_mtime;
297 res += utime(filename, &timebuf); /* set access and modification times */
298
299 #if !defined(_WIN32)
300 res += chown(filename, statbuf->st_uid, statbuf->st_gid); /* Copy ownership */
301 #endif
302
303 res += chmod(filename, statbuf->st_mode & 07777); /* Copy file permissions */
304
305 errno = 0;
306 return -res; /* number of errors is returned */
307 }
308
309
UTIL_getFileStat(const char * infilename,stat_t * statbuf)310 UTIL_STATIC int UTIL_getFileStat(const char* infilename, stat_t *statbuf)
311 {
312 int r;
313 #if defined(_MSC_VER)
314 r = _stat64(infilename, statbuf);
315 if (r || !(statbuf->st_mode & S_IFREG)) return 0; /* No good... */
316 #else
317 r = stat(infilename, statbuf);
318 if (r || !S_ISREG(statbuf->st_mode)) return 0; /* No good... */
319 #endif
320 return 1;
321 }
322
323
UTIL_isRegFile(const char * infilename)324 UTIL_STATIC int UTIL_isRegFile(const char* infilename)
325 {
326 stat_t statbuf;
327 return UTIL_getFileStat(infilename, &statbuf); /* Only need to know whether it is a regular file */
328 }
329
330
UTIL_isDirectory(const char * infilename)331 UTIL_STATIC U32 UTIL_isDirectory(const char* infilename)
332 {
333 int r;
334 stat_t statbuf;
335 #if defined(_MSC_VER)
336 r = _stat64(infilename, &statbuf);
337 if (!r && (statbuf.st_mode & _S_IFDIR)) return 1;
338 #else
339 r = stat(infilename, &statbuf);
340 if (!r && S_ISDIR(statbuf.st_mode)) return 1;
341 #endif
342 return 0;
343 }
344
345
UTIL_getFileSize(const char * infilename)346 UTIL_STATIC U64 UTIL_getFileSize(const char* infilename)
347 {
348 int r;
349 #if defined(_MSC_VER)
350 struct __stat64 statbuf;
351 r = _stat64(infilename, &statbuf);
352 if (r || !(statbuf.st_mode & S_IFREG)) return 0; /* No good... */
353 #elif defined(__MINGW32__) && defined (__MSVCRT__)
354 struct _stati64 statbuf;
355 r = _stati64(infilename, &statbuf);
356 if (r || !(statbuf.st_mode & S_IFREG)) return 0; /* No good... */
357 #else
358 struct stat statbuf;
359 r = stat(infilename, &statbuf);
360 if (r || !S_ISREG(statbuf.st_mode)) return 0; /* No good... */
361 #endif
362 return (U64)statbuf.st_size;
363 }
364
365
UTIL_getTotalFileSize(const char ** fileNamesTable,unsigned nbFiles)366 UTIL_STATIC U64 UTIL_getTotalFileSize(const char** fileNamesTable, unsigned nbFiles)
367 {
368 U64 total = 0;
369 unsigned n;
370 for (n=0; n<nbFiles; n++)
371 total += UTIL_getFileSize(fileNamesTable[n]);
372 return total;
373 }
374
375
376 /*
377 * A modified version of realloc().
378 * If UTIL_realloc() fails the original block is freed.
379 */
UTIL_realloc(void * ptr,size_t size)380 UTIL_STATIC void* UTIL_realloc(void* ptr, size_t size)
381 {
382 void* const newptr = realloc(ptr, size);
383 if (newptr) return newptr;
384 free(ptr);
385 return NULL;
386 }
387
388
389 #ifdef _WIN32
390 # define UTIL_HAS_CREATEFILELIST
391
UTIL_prepareFileList(const char * dirName,char ** bufStart,size_t * pos,char ** bufEnd)392 UTIL_STATIC int UTIL_prepareFileList(const char* dirName, char** bufStart, size_t* pos, char** bufEnd)
393 {
394 char* path;
395 size_t dirLength, nbFiles = 0;
396 WIN32_FIND_DATAA cFile;
397 HANDLE hFile;
398
399 dirLength = strlen(dirName);
400 path = (char*) malloc(dirLength + 3);
401 if (!path) return 0;
402
403 memcpy(path, dirName, dirLength);
404 path[dirLength] = '\\';
405 path[dirLength+1] = '*';
406 path[dirLength+2] = 0;
407
408 hFile=FindFirstFileA(path, &cFile);
409 if (hFile == INVALID_HANDLE_VALUE) {
410 fprintf(stderr, "Cannot open directory '%s'\n", dirName);
411 return 0;
412 }
413 free(path);
414
415 do {
416 size_t pathLength;
417 int const fnameLength = (int)strlen(cFile.cFileName);
418 path = (char*) malloc(dirLength + fnameLength + 2);
419 if (!path) { FindClose(hFile); return 0; }
420 memcpy(path, dirName, dirLength);
421 path[dirLength] = '\\';
422 memcpy(path+dirLength+1, cFile.cFileName, fnameLength);
423 pathLength = dirLength+1+fnameLength;
424 path[pathLength] = 0;
425 if (cFile.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
426 if (strcmp (cFile.cFileName, "..") == 0 ||
427 strcmp (cFile.cFileName, ".") == 0) continue;
428
429 nbFiles += UTIL_prepareFileList(path, bufStart, pos, bufEnd); /* Recursively call "UTIL_prepareFileList" with the new path. */
430 if (*bufStart == NULL) { free(path); FindClose(hFile); return 0; }
431 }
432 else if ((cFile.dwFileAttributes & FILE_ATTRIBUTE_NORMAL) || (cFile.dwFileAttributes & FILE_ATTRIBUTE_ARCHIVE) || (cFile.dwFileAttributes & FILE_ATTRIBUTE_COMPRESSED)) {
433 if (*bufStart + *pos + pathLength >= *bufEnd) {
434 ptrdiff_t newListSize = (*bufEnd - *bufStart) + LIST_SIZE_INCREASE;
435 *bufStart = (char*)UTIL_realloc(*bufStart, newListSize);
436 *bufEnd = *bufStart + newListSize;
437 if (*bufStart == NULL) { free(path); FindClose(hFile); return 0; }
438 }
439 if (*bufStart + *pos + pathLength < *bufEnd) {
440 strncpy(*bufStart + *pos, path, *bufEnd - (*bufStart + *pos));
441 *pos += pathLength + 1;
442 nbFiles++;
443 }
444 }
445 free(path);
446 } while (FindNextFileA(hFile, &cFile));
447
448 FindClose(hFile);
449 assert(nbFiles < INT_MAX);
450 return (int)nbFiles;
451 }
452
453 #elif defined(__linux__) || (PLATFORM_POSIX_VERSION >= 200112L) /* opendir, readdir require POSIX.1-2001 */
454 # define UTIL_HAS_CREATEFILELIST
455 # include <dirent.h> /* opendir, readdir */
456 # include <string.h> /* strerror, memcpy */
457
UTIL_prepareFileList(const char * dirName,char ** bufStart,size_t * pos,char ** bufEnd)458 UTIL_STATIC int UTIL_prepareFileList(const char* dirName, char** bufStart, size_t* pos, char** bufEnd)
459 {
460 DIR* dir;
461 struct dirent * entry;
462 int dirLength, nbFiles = 0;
463
464 if (!(dir = opendir(dirName))) {
465 fprintf(stderr, "Cannot open directory '%s': %s\n", dirName, strerror(errno));
466 return 0;
467 }
468
469 dirLength = (int)strlen(dirName);
470 errno = 0;
471 while ((entry = readdir(dir)) != NULL) {
472 char* path;
473 int fnameLength, pathLength;
474 if (strcmp (entry->d_name, "..") == 0 ||
475 strcmp (entry->d_name, ".") == 0) continue;
476 fnameLength = (int)strlen(entry->d_name);
477 path = (char*) malloc(dirLength + fnameLength + 2);
478 if (!path) { closedir(dir); return 0; }
479 memcpy(path, dirName, dirLength);
480 path[dirLength] = '/';
481 memcpy(path+dirLength+1, entry->d_name, fnameLength);
482 pathLength = dirLength+1+fnameLength;
483 path[pathLength] = 0;
484
485 if (UTIL_isDirectory(path)) {
486 nbFiles += UTIL_prepareFileList(path, bufStart, pos, bufEnd); /* Recursively call "UTIL_prepareFileList" with the new path. */
487 if (*bufStart == NULL) { free(path); closedir(dir); return 0; }
488 } else {
489 if (*bufStart + *pos + pathLength >= *bufEnd) {
490 ptrdiff_t newListSize = (*bufEnd - *bufStart) + LIST_SIZE_INCREASE;
491 *bufStart = (char*)UTIL_realloc(*bufStart, newListSize);
492 *bufEnd = *bufStart + newListSize;
493 if (*bufStart == NULL) { free(path); closedir(dir); return 0; }
494 }
495 if (*bufStart + *pos + pathLength < *bufEnd) {
496 strncpy(*bufStart + *pos, path, *bufEnd - (*bufStart + *pos));
497 *pos += pathLength + 1;
498 nbFiles++;
499 }
500 }
501 free(path);
502 errno = 0; /* clear errno after UTIL_isDirectory, UTIL_prepareFileList */
503 }
504
505 if (errno != 0) {
506 fprintf(stderr, "readdir(%s) error: %s\n", dirName, strerror(errno));
507 free(*bufStart);
508 *bufStart = NULL;
509 }
510 closedir(dir);
511 return nbFiles;
512 }
513
514 #else
515
UTIL_prepareFileList(const char * dirName,char ** bufStart,size_t * pos,char ** bufEnd)516 UTIL_STATIC int UTIL_prepareFileList(const char* dirName, char** bufStart, size_t* pos, char** bufEnd)
517 {
518 (void)bufStart; (void)bufEnd; (void)pos;
519 fprintf(stderr, "Directory %s ignored (compiled without _WIN32 or _POSIX_C_SOURCE)\n", dirName);
520 return 0;
521 }
522
523 #endif /* #ifdef _WIN32 */
524
525 /*
526 * UTIL_createFileList - takes a list of files and directories (params: inputNames, inputNamesNb), scans directories,
527 * and returns a new list of files (params: return value, allocatedBuffer, allocatedNamesNb).
528 * After finishing usage of the list the structures should be freed with UTIL_freeFileList(params: return value, allocatedBuffer)
529 * In case of error UTIL_createFileList returns NULL and UTIL_freeFileList should not be called.
530 */
531 UTIL_STATIC const char**
UTIL_createFileList(const char ** inputNames,unsigned inputNamesNb,char ** allocatedBuffer,unsigned * allocatedNamesNb)532 UTIL_createFileList(const char** inputNames, unsigned inputNamesNb,
533 char** allocatedBuffer, unsigned* allocatedNamesNb)
534 {
535 size_t pos;
536 unsigned i, nbFiles;
537 char* buf = (char*)malloc(LIST_SIZE_INCREASE);
538 size_t bufSize = LIST_SIZE_INCREASE;
539 const char** fileTable;
540
541 if (!buf) return NULL;
542
543 for (i=0, pos=0, nbFiles=0; i<inputNamesNb; i++) {
544 if (!UTIL_isDirectory(inputNames[i])) {
545 size_t const len = strlen(inputNames[i]);
546 if (pos + len >= bufSize) {
547 while (pos + len >= bufSize) bufSize += LIST_SIZE_INCREASE;
548 buf = (char*)UTIL_realloc(buf, bufSize);
549 if (!buf) return NULL;
550 }
551 assert(pos + len < bufSize);
552 strncpy(buf + pos, inputNames[i], bufSize - pos);
553 pos += len + 1;
554 nbFiles++;
555 } else {
556 char* bufend = buf + bufSize;
557 nbFiles += (unsigned)UTIL_prepareFileList(inputNames[i], &buf, &pos, &bufend);
558 if (buf == NULL) return NULL;
559 assert(bufend > buf);
560 bufSize = (size_t)(bufend - buf);
561 } }
562
563 if (nbFiles == 0) { free(buf); return NULL; }
564
565 fileTable = (const char**)malloc(((size_t)nbFiles+1) * sizeof(const char*));
566 if (!fileTable) { free(buf); return NULL; }
567
568 for (i=0, pos=0; i<nbFiles; i++) {
569 fileTable[i] = buf + pos;
570 pos += strlen(fileTable[i]) + 1;
571 }
572
573 if (pos > bufSize) {
574 free(buf);
575 free((void*)fileTable);
576 return NULL;
577 } /* can this happen ? */
578
579 *allocatedBuffer = buf;
580 *allocatedNamesNb = nbFiles;
581
582 return fileTable;
583 }
584
585
586 UTIL_STATIC void
UTIL_freeFileList(const char ** filenameTable,char * allocatedBuffer)587 UTIL_freeFileList(const char** filenameTable, char* allocatedBuffer)
588 {
589 if (allocatedBuffer) free(allocatedBuffer);
590 if (filenameTable) free((void*)filenameTable);
591 }
592
593
594 #if defined (__cplusplus)
595 }
596 #endif
597
598 #endif /* UTIL_H_MODULE */
599