Annotation of parser3/src/main/pa_file.C, revision 1.8
1.1 moko 1: /** @file
2: Parser: file and file system related functions.
3:
4: Copyright (c) 2000-2026 Art. Lebedev Studio (https://www.artlebedev.com)
5: Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
6: */
7:
8: #include "pa_file.h"
9: #include "pa_dir.h"
10: #include "pa_charsets.h"
11: #include "pa_http.h"
12: #include "pa_convert_utf.h"
13:
14: #ifdef _MSC_VER
15: #include <windows.h>
16: #include <direct.h>
17: #endif
18:
1.8 ! moko 19: volatile const char * IDENT_PA_FILE_C="$Id: pa_file.C,v 1.7 2026/09/30 17:45:25 moko Exp $" IDENT_PA_FILE_H;
! 20:
! 21: // a tainted path scheme (file://, http:// or parser://) would be accepted
! 22: //#define IGNORE_FILE_PREFIX_LANGUAGES
1.1 moko 23:
24: // some maybe-undefined constants
25:
26: #ifndef _O_TEXT
27: # define _O_TEXT 0
28: #endif
29: #ifndef _O_BINARY
30: # define _O_BINARY 0
31: #endif
32:
33: #ifdef HAVE_FTRUNCATE
34: # define PA_O_TRUNC 0
35: #else
36: # ifdef _O_TRUNC
37: # define PA_O_TRUNC _O_TRUNC
38: # else
39: # error you must have either ftruncate function or _O_TRUNC bit declared
40: # endif
41: #endif
42:
43: #ifdef WIN32
44:
45: bool is_os_absolute_path(const String& path) {
46: return is_os_absolute_path(path.cstr());
47: }
48:
49: bool is_os_absolute_path(const char* path) {
50: return path[0] && path[0]!=':' && path[1]==':' // DRIVE: (including drive-relative paths, for compatibility)
1.4 moko 51: || path[0]=='\\' && path[1]=='\\'; // UNC, only '\\' is supported as '//' is a document root relative path
1.1 moko 52: }
53: #endif
54:
1.5 moko 55: uint path_scheme(const String& path) {
56: if(path.starts_with("file://"))
57: return PA_SCHEME_FILE;
58: if(path.starts_with("http://"))
59: return PA_SCHEME_HTTP;
60: if(path.starts_with("parser://"))
61: return PA_SCHEME_PARSER;
62: return PA_SCHEME_NONE;
63: }
64:
65: void check_path_scheme(uint scheme, const String& path, uint allowed) {
66: if(scheme!=PA_SCHEME_FILE && !(allowed&scheme))
67: throw Exception(PARSER_RUNTIME, &path, "unsupported path scheme");
1.8 ! moko 68: #ifndef IGNORE_FILE_PREFIX_LANGUAGES
! 69: if(!path.check_lang(String::L_AS_IS, 0, scheme==PA_SCHEME_PARSER ? 9 /* "parser://" */ : 7 /* "file://" or "http://" */))
! 70: throw Exception(PARSER_RUNTIME, &path, "tainted path scheme");
! 71: #endif
1.5 moko 72: }
73:
74: const String* file_uri_to_path(const String& uri) {
75: const String* rest=&uri.mid(7 /* "file://" */, uri.length());
76: if(rest->starts_with("localhost/"))
77: rest=&rest->mid(9 /* "localhost", keeping the slash */, rest->length());
78: if(rest->first_char()=='/') {
79: // file:///C:/path and file://localhost/C:/path: the slash before a drive name is not a part of the path
80: const String& disk=rest->mid(1, rest->length());
81: return is_os_absolute_path(disk) ? &disk : rest;
82: }
83: if(is_os_absolute_path(*rest))
84: return rest; // file://C:/path, not a standard form but in use
1.7 moko 85: #ifdef WIN32
86: if(rest->pos('/')!=STRING_NOT_FOUND) { // file://server/share/path is the UNC path \\server\share\path
87: String& result=*new String("//");
88: result << *rest;
89: return &result;
90: }
91: #endif
1.5 moko 92: return 0;
93: }
94:
1.1 moko 95: // externs
96:
97: const UTF16* pa_utf16_encode(const char* in, Charset& source_charset);
98:
99: // functions
100:
101: #ifdef _MSC_VER
102:
103: #define PA_UTF16_ENC(value) (const wchar_t *)pa_utf16_encode(value, pa_thread_request().charsets.source())
104:
105: int pa_stat(const char *pathname, struct stat *buffer){
106: return _wstat64(PA_UTF16_ENC(pathname), buffer);
107: }
108:
109: int pa_open(const char *pathname, int flags, int mode){
110: return _wopen(PA_UTF16_ENC(pathname), flags, mode);
111: }
112:
113: FILE *pa_fopen(const char *pathname, const char *mode){
114: return _wfopen(PA_UTF16_ENC(pathname), PA_UTF16_ENC(mode));
115: }
116:
117: int pa_mkdir(const char *pathname, int){
118: return _wmkdir(PA_UTF16_ENC(pathname));
119: }
120:
121: int pa_rmdir(const char *pathname){
122: return _wrmdir(PA_UTF16_ENC(pathname));
123: }
124:
125: int pa_rename(const char *oldpath, const char *newpath){
126: return _wrename(PA_UTF16_ENC(oldpath), PA_UTF16_ENC(newpath));
127: }
128:
129: int pa_unlink(const char *pathname){
130: return _wunlink(PA_UTF16_ENC(pathname));
131: }
132:
133: #else
134:
135: #define pa_mkdir mkdir
136: #define pa_rmdir rmdir
137: #define pa_rename rename
138: #define pa_unlink unlink
139:
140: #endif
141:
142: /// these options were handled but not checked elsewhere, now check them
143: int pa_get_valid_file_options_count(HashStringValue& options) {
144: int result=0;
145: if(options.get(PA_SQL_LIMIT_NAME))
146: result++;
147: if(options.get(PA_SQL_OFFSET_NAME))
148: result++;
149: if(options.get(PA_COLUMN_SEPARATOR_NAME))
150: result++;
151: if(options.get(PA_COLUMN_ENCLOSER_NAME))
152: result++;
153: if(options.get(PA_CHARSET_NAME))
154: result++;
155: return result;
156: }
157:
158: #ifndef DOXYGEN
159: struct File_read_action_info {
160: char **data; size_t *data_size;
161: char* buf; uint64_t offset; size_t limit;
1.3 moko 162: };
1.1 moko 163: #endif
164:
165: static void file_read_action(struct stat& finfo, int f, const String& file_spec, void *context) {
1.3 moko 166: File_read_action_info& info = *static_cast<File_read_action_info *>(context);
1.1 moko 167: size_t to_read_size = check_file_size(info.limit && info.limit < (size_t)finfo.st_size ? info.limit : (size_t)finfo.st_size, &file_spec);
168: if(to_read_size) {
169: if(info.offset)
170: pa_lseek(f, info.offset, SEEK_SET); // seek never fails as POSIX allows the file offset to be set beyond the EOF
171: *info.data = info.buf ? info.buf : (char *)pa_malloc_atomic(to_read_size+1);
172: ssize_t result = read(f, *info.data, to_read_size);
173: if(result<0)
174: throw Exception("file.read", &file_spec, "read failed: %s (%d)", strerror(errno), errno);
175: *info.data_size = result;
176: } else { // empty file
177: // for both, text and binary: for text we need that terminator, for binary we need nonzero pointer to be able to save such files
178: *info.data = (char *)pa_malloc_atomic(1);
179: *(char*)(*info.data) = 0;
180: *info.data_size = 0;
181: return;
182: }
183: }
184:
185: File_read_result file_read_binary(const String& file_spec, bool fail_on_read_problem, char* buf, uint64_t offset, size_t limit) {
186: File_read_result result = {false, 0, 0, 0};
187: File_read_action_info info = {&result.str, &result.length, buf, offset, limit};
188:
189: result.success = file_read_action_under_lock(file_spec, "read", file_read_action, &info, 0, fail_on_read_problem);
190: return result;
191: }
192:
1.3 moko 193: File_read_result file_read(Request_charsets& charsets, const String& file_spec,
1.1 moko 194: bool as_text, HashStringValue *options,
195: bool fail_on_read_problem,
196: size_t offset = 0, size_t limit = 0, bool transcode_text_result = true) {
197: File_read_result result = {false, 0, 0, 0};
198: if(options){
199: int valid_options = pa_get_valid_file_options_count(*options);
200: if(valid_options != options->count())
201: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
202: }
203:
1.3 moko 204: File_read_action_info info = {&result.str, &result.length, 0, offset, limit};
1.1 moko 205:
1.3 moko 206: result.success = file_read_action_under_lock(file_spec, "read", file_read_action, &info, as_text, fail_on_read_problem);
1.1 moko 207:
208: if(as_text){
209: if(result.success){
210: Charset* asked_charset = 0;
211: if(options)
212: if(Value* vcharset_name = options->get(PA_CHARSET_NAME))
213: asked_charset = &pa_charsets.get(vcharset_name->as_string());
214:
215: asked_charset = pa_charsets.checkBOM(result.str, result.length, asked_charset);
216:
217: if(result.length && transcode_text_result && asked_charset){ // length must be checked because transcode returns CONST string in case length==0, which contradicts hacking few lines below
218: String::C body = String::C(result.str, result.length);
219: body=Charset::transcode(body, *asked_charset, charsets.source());
220:
221: result.str = const_cast<char*>(body.str); // hacking a little
222: result.length = body.length;
223: }
224: }
225: if(result.length)
226: fix_line_breaks(result.str, result.length);
227: }
228:
229: return result;
230: }
231:
1.3 moko 232: File_read_result file_load(Request& r, const String& file_spec,
1.1 moko 233: bool as_text, HashStringValue *options,
234: bool fail_on_read_problem,
235: bool transcode_text_result) {
236:
237: size_t offset = 0;
238: size_t limit = 0;
239:
240: if(options){
241: if(Value *voffset = (Value *)options->get(sql_offset_name))
242: offset = r.process(*voffset).as_int();
243: if(Value *vlimit = (Value *)options->get(sql_limit_name))
244: limit = r.process(*vlimit).as_int();
245: // no check on options count here
246: }
247:
248: if(file_spec.starts_with("http://")) {
249: if(offset || limit)
250: throw Exception(PARSER_RUNTIME, 0, "offset and load options are not supported for HTTP:// file load");
251:
252: // fail on read problem
253: File_read_http_result http = pa_internal_file_read_http(r, file_spec, as_text, options, transcode_text_result);
254:
255: File_read_result result = {true, http.str, http.length, http.headers};
256: return result;
257: } else
258: return file_read(r.charsets, file_spec, as_text, options, fail_on_read_problem, offset, limit, transcode_text_result);
259: }
260:
261: char* file_read_text(Request_charsets& charsets, const String& file_spec, bool fail_on_read_problem) {
262: File_read_result file = file_read(charsets, file_spec, true, 0, fail_on_read_problem);
263: return file.success ? file.str : 0;
264: }
265:
266: char* file_load_text(Request& r, const String& file_spec, bool fail_on_read_problem, HashStringValue* options, bool transcode_result) {
267: File_read_result file = file_load(r, file_spec, true, options, fail_on_read_problem, transcode_result);
268: return file.success ? file.str : 0;
269: }
270:
271: #ifdef PA_SAFE_MODE
272: void check_safe_mode(struct stat finfo, const String& file_spec, const char* fname) {
273: if(finfo.st_uid/*foreign?*/!=geteuid()
274: && finfo.st_gid/*foreign?*/!=getegid())
275: throw Exception(PARSER_RUNTIME,
276: &file_spec,
277: "parser is in safe mode: reading files of foreign group and user disabled "
278: "[recompile parser with --disable-safe-mode configure option], "
279: "actual filename '%s', fuid(%d)!=euid(%d) or fgid(%d)!=egid(%d)",
280: fname, finfo.st_uid, geteuid(), finfo.st_gid, getegid()
281: );
282: }
283: #else
284: void check_safe_mode(struct stat, const String&, const char*) {
285: }
286: #endif
287:
288:
289: bool file_read_action_under_lock(const String& file_spec, const char* action_name, File_read_action action, void *context,
290: bool as_text, bool fail_on_read_problem) {
291:
292: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
293: int f;
294:
295: // first open, next stat:
296: // directory update of NTFS hard links performed on open.
1.3 moko 297: // ex:
1.1 moko 298: // a.html:^test[] and b.html hardlink to a.html
299: // user inserts ! before ^test in a.html
1.3 moko 300: // directory entry of b.html in NTFS not updated at once,
1.1 moko 301: // they delay update till open, so we would receive "!^test[" string
302: // if would do stat, next open.
303: // later: it seems, even this does not help sometimes
304: if((f=pa_open(fname, O_RDONLY | (as_text ? _O_TEXT : _O_BINARY) ))>=0) {
305: try {
306: int pa_errno=pa_lock_shared_blocking(f);
307: if(pa_errno!=0)
308: throw Exception("file.lock", &file_spec, "shared lock failed: %s (%d), actual filename '%s'", strerror(pa_errno), pa_errno, fname);
309:
310: struct stat finfo;
311: if(pa_fstat(f, &finfo)!=0)
312: throw Exception("file.missing", // hardly possible: we just opened it OK
313: &file_spec, "stat failed: %s (%d), actual filename '%s'", strerror(errno), errno, fname);
314:
315: check_safe_mode(finfo, file_spec, fname);
316:
1.3 moko 317: action(finfo, f, file_spec, context);
1.1 moko 318: } catch(...) {
1.3 moko 319: pa_unlock(f);close(f);
1.1 moko 320: if(fail_on_read_problem)
321: rethrow;
322: return false;
1.3 moko 323: }
1.1 moko 324:
1.3 moko 325: pa_unlock(f);close(f);
1.1 moko 326: return true;
327: } else {
328: if(fail_on_read_problem)
329: throw Exception(errno==EACCES ? "file.access" : (errno==ENOENT || errno==ENOTDIR || errno==ENODEV) ? "file.missing" : 0,
330: &file_spec, "%s failed: %s (%d), actual filename '%s'", action_name, strerror(errno), errno, fname);
331: return false;
332: }
333: }
334:
335: void create_dir_for_file(const String& file_spec) {
336: const char *str=file_spec.taint_cstr(String::L_FILE_SPEC);
337: if(str[0]){
338: const char *pos=str+1;
1.6 moko 339: while((pos=strchr(pos, '/')) && pos[1]) { // to avoid trailing /, see #1166
1.1 moko 340: pa_mkdir(pa_strdup(str,pos-str), 0775);
341: pos++;
342: }
343: }
344: }
345:
346: bool file_write_action_under_lock(const String& file_spec, const char* action_name, File_write_action action, void *context,
347: bool as_text, bool do_append, bool do_block, bool fail_on_lock_problem) {
348:
349: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
350: int f;
351: if(access(fname, W_OK)!=0) // no
352: create_dir_for_file(file_spec);
353:
354: if((f=pa_open(fname, O_CREAT | O_RDWR | (as_text ? _O_TEXT : _O_BINARY) | (do_append ? O_APPEND : PA_O_TRUNC), 0664))>=0) {
355: int pa_errno=do_block ? pa_lock_exclusive_blocking(f) : pa_lock_exclusive_nonblocking(f);
356: if(pa_errno!=0) {
357: Exception e("file.lock", &file_spec, "shared lock failed: %s (%d), actual filename '%s'", strerror(pa_errno), pa_errno, fname);
358: close(f);
359: if(fail_on_lock_problem)
360: throw e;
361: return false;
362: }
363:
364: try {
365: #if (defined(HAVE_FCHMOD) && defined(PA_SAFE_MODE))
366: struct stat finfo;
367: if(pa_fstat(f, &finfo)==0 && finfo.st_mode & 0111)
368: fchmod(f, finfo.st_mode & 0666/*clear executable bits*/); // backward: ignore errors if any
369: #endif
370: action(f, context);
371: } catch(...) {
372: #ifdef HAVE_FTRUNCATE
373: if(!do_append)
374: PA_UNUSED int ignore_result=ftruncate(f, lseek(f, 0, SEEK_CUR)); // one cannot use O_TRUNC, read lower
375: #endif
376: pa_unlock(f);close(f);
377: rethrow;
378: }
379:
380: #ifdef HAVE_FTRUNCATE
381: if(!do_append)
382: PA_UNUSED int ignore_result=ftruncate(f, lseek(f, 0, SEEK_CUR)); // O_TRUNC truncates even exclusevely write-locked file [thanks to Igor Milyakov <virtan@rotabanner.com> for discovering]
383: #endif
384: pa_unlock(f);close(f);
385: return true;
386: } else
387: throw Exception(errno==EACCES ? "file.access" : 0, &file_spec, "%s failed: %s (%d), actual filename '%s'", action_name, strerror(errno), errno, fname);
388: // here should be nothing, see rethrow above
389: }
390:
391: #ifndef DOXYGEN
392: struct File_write_action_info {
393: const char* str;
394: size_t length;
395: };
396: #endif
397:
398: // a single write() must stay below INT_MAX as windows _write() reports written bytes as int
399: #define FILE_WRITE_CHUNK_SIZE (256*0x100000)
400:
401: static const char* bytes_left(size_t rest) {
402: return rest ? pa_strcat(", ", pa_uitoa(rest), " bytes left") : "";
403: }
404:
405: static void file_write_action(int f, void *context) {
406: File_write_action_info& info=*static_cast<File_write_action_info *>(context);
407:
408: const char* data=info.str;
409: size_t left=info.length;
410:
411: while(left) {
412: size_t portion=min(left, (size_t)FILE_WRITE_CHUNK_SIZE);
413: ssize_t written=write(f, data, portion);
414: if(written<0)
415: throw Exception("file.write", 0, "error writing %s bytes: %s (%d)%s", pa_uitoa(portion), strerror(errno), errno, bytes_left(left-portion));
416: if(written==0)
417: throw Exception("file.write", 0, "error writing %s bytes: zero bytes written%s", pa_uitoa(portion), bytes_left(left-portion));
418: data+=written;
419: left-=written;
420: }
421: }
422:
423: void file_write(
424: Request_charsets& charsets,
425: const String& file_spec,
426: const char* data,
1.3 moko 427: size_t size,
428: bool as_text,
1.1 moko 429: bool do_append,
430: Charset* asked_charset) {
431:
432: if(as_text && asked_charset){
433: String::C body=String::C(data, size);
434: body=Charset::transcode(body, charsets.source(), *asked_charset);
435: data=body.str;
436: size=body.length;
437: };
438:
439: File_write_action_info info={data, size};
440:
441: file_write_action_under_lock(
442: file_spec,
443: "write",
444: file_write_action,
445: &info,
446: as_text,
447: do_append);
448: }
449:
450: static size_t get_dir(char* fname, size_t helper_length){
451: bool dir=false;
452: size_t pos=0;
453: for(pos=helper_length; pos; pos--){
454: char c=fname[pos-1];
1.6 moko 455: if(c=='/'){
1.1 moko 456: fname[pos-1]=0;
457: dir=true;
458: } else if(dir) break;
459: }
460: return pos;
461: }
462:
463: bool entry_exists(const char* fname, struct stat *afinfo) {
464: struct stat lfinfo;
465: bool result=pa_stat(fname, &lfinfo)==0;
466: if(afinfo)
467: *afinfo=lfinfo;
468: return result;
469: }
470:
471: bool entry_exists(const String& file_spec) {
1.3 moko 472: return entry_exists(file_spec.taint_cstr(String::L_FILE_SPEC), 0);
1.1 moko 473: }
474:
475: static bool entry_ifdir(char *fname, bool need_dir) {
476: if(need_dir){
477: size_t size=strlen(fname);
478: while(size) {
479: char c=fname[size-1];
1.6 moko 480: if(c=='/')
1.1 moko 481: fname[--size]=0;
482: else
483: break;
484: }
485: }
486:
487: struct stat finfo;
488: if(entry_exists(fname, &finfo)) {
489: bool is_dir=(finfo.st_mode&S_IFDIR) != 0;
490: return is_dir==need_dir;
491: }
492: return false;
493: }
494:
495: static bool entry_ifdir(const String& file_spec, bool need_dir) {
496: return entry_ifdir(file_spec.taint_cstrm(String::L_FILE_SPEC), need_dir);
497: }
498:
499: // throws nothing! [this is required in file_move & file_delete]
500: static void rmdir(const String& file_spec, size_t pos_after) {
501: char* dir_spec=file_spec.taint_cstrm(String::L_FILE_SPEC);
502: size_t length=strlen(dir_spec);
503: while( (length=get_dir(dir_spec, length)) && (length > pos_after) ){
504: #ifdef _MSC_VER
505: if(!entry_ifdir(dir_spec, true))
506: break;
507: DWORD attrs=GetFileAttributesW(PA_UTF16_ENC(dir_spec));
508: if(
509: (attrs==INVALID_FILE_ATTRIBUTES)
510: || !(attrs & FILE_ATTRIBUTE_DIRECTORY)
511: || (attrs & FILE_ATTRIBUTE_REPARSE_POINT)
512: )
513: break;
514: #endif
515: if(pa_rmdir(dir_spec))
516: break;
517: };
518: }
519:
520: bool file_delete(const String& file_spec, bool fail_on_problem, bool keep_empty_dirs) {
1.3 moko 521: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.1 moko 522: if(pa_unlink(fname)!=0) {
523: if(fail_on_problem)
524: throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,
525: &file_spec, "unlink failed: %s (%d), actual filename '%s'", strerror(errno), errno, fname);
526: else
527: return false;
528: }
529:
530: if(!keep_empty_dirs)
1.3 moko 531: rmdir(file_spec, 1);
1.1 moko 532:
533: return true;
534: }
535:
536: void file_move(const String& old_spec, const String& new_spec, bool keep_empty_dirs) {
1.3 moko 537: const char* old_spec_cstr=old_spec.taint_cstr(String::L_FILE_SPEC);
538: const char* new_spec_cstr=new_spec.taint_cstr(String::L_FILE_SPEC);
1.1 moko 539:
1.3 moko 540: create_dir_for_file(new_spec);
1.1 moko 541:
542: if(pa_rename(old_spec_cstr, new_spec_cstr)!=0)
543: throw Exception(errno==EACCES ? "file.access" : errno==ENOENT ? "file.missing" : 0,
544: &old_spec, "rename failed: %s (%d), actual filename '%s' to '%s'", strerror(errno), errno, old_spec_cstr, new_spec_cstr);
545:
546: if(!keep_empty_dirs)
1.3 moko 547: rmdir(old_spec, 1);
1.1 moko 548: }
549:
550:
551: bool file_exist(const String& file_spec) {
1.3 moko 552: return entry_ifdir(file_spec, false);
1.1 moko 553: }
554:
555: bool dir_exists(const String& file_spec) {
1.3 moko 556: return entry_ifdir(file_spec, true);
1.1 moko 557: }
558:
559: const String* file_exist(const String& path, const String& name) {
560: String& result=*new String(path);
1.6 moko 561: if(path.last_char() != '/')
1.1 moko 562: result << "/";
563: result << name;
564: return file_exist(result)?&result:0;
565: }
566:
567: bool file_executable(const String& file_spec) {
568: return access(file_spec.taint_cstr(String::L_FILE_SPEC), X_OK)==0;
569: }
570:
571: bool file_stat(const String& file_spec, uint64_t& rsize, time_t& ratime, time_t& rmtime, time_t& rctime, bool fail_on_read_problem) {
1.3 moko 572: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.1 moko 573: struct stat finfo;
574: if(pa_stat(fname, &finfo)!=0) {
575: if(fail_on_read_problem)
576: throw Exception("file.missing", &file_spec, "getting file size failed: %s (%d), real filename '%s'", strerror(errno), errno, fname);
577: else
578: return false;
579: }
580: rsize=finfo.st_size;
581: ratime=(time_t)finfo.st_atime;
582: rmtime=(time_t)finfo.st_mtime;
583: rctime=(time_t)finfo.st_ctime;
584: return true;
585: }
586:
587: size_t check_file_size(uint64_t size, const String* file_spec){
588: if(size > (uint64_t)pa_file_size_limit)
1.2 moko 589: throw Exception(PARSER_RUNTIME, file_spec, "content size of %s bytes exceeds the limit (%s bytes)", pa_uitoa(size), pa_uitoa(pa_file_size_limit));
1.1 moko 590: return (size_t)size;
591: }
592:
1.3 moko 593: /**
1.1 moko 594: String related functions
595: */
596:
597: const char *pa_filename(const char *path){
598: const char *slash=strrpbrk(path, "/\\");
599: return slash ? slash+1 : path;
600: }
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