Annotation of parser3/src/main/pa_common.C, revision 1.322
1.15 paf 1: /** @file
1.16 paf 2: Parser: commonly functions.
3:
1.322 ! moko 4: Copyright (c) 2000-2020 Art. Lebedev Studio (http://www.artlebedev.com)
1.101 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.306 moko 6: */
1.210 paf 7:
1.1 paf 8: #include "pa_common.h"
1.4 paf 9: #include "pa_exception.h"
1.154 paf 10: #include "pa_hash.h"
1.14 paf 11: #include "pa_globals.h"
1.154 paf 12: #include "pa_charsets.h"
1.214 paf 13: #include "pa_http.h"
1.223 misha 14: #include "pa_request_charsets.h"
1.237 misha 15: #include "pcre.h"
1.241 misha 16: #include "pa_request.h"
1.98 paf 17:
1.283 moko 18: #include "pa_idna.h"
19: #include "pa_convert_utf.h"
20:
1.273 moko 21: #ifdef _MSC_VER
1.276 moko 22: #include <windows.h>
1.273 moko 23: #include <direct.h>
24: #endif
25:
1.277 moko 26: #ifdef _MSC_VER
27: #define pa_mkdir(path, mode) _mkdir(path)
28: #else
29: #define pa_mkdir(path, mode) mkdir(path, mode)
30: #endif
31:
1.322 ! moko 32: volatile const char * IDENT_PA_COMMON_C="$Id: pa_common.C,v 1.321 2020/12/08 21:30:46 moko Exp $" IDENT_PA_COMMON_H IDENT_PA_HASH_H IDENT_PA_ARRAY_H IDENT_PA_STACK_H;
1.267 moko 33:
1.93 paf 34: // some maybe-undefined constants
35:
1.82 paf 36: #ifndef _O_TEXT
37: # define _O_TEXT 0
38: #endif
39: #ifndef _O_BINARY
40: # define _O_BINARY 0
1.47 paf 41: #endif
1.80 paf 42:
1.138 paf 43: #ifdef HAVE_FTRUNCATE
44: # define PA_O_TRUNC 0
45: #else
46: # ifdef _O_TRUNC
47: # define PA_O_TRUNC _O_TRUNC
48: # else
49: # error you must have either ftruncate function or _O_TRUNC bit declared
50: # endif
1.154 paf 51: #endif
1.176 paf 52:
1.154 paf 53: // defines for globals
54:
55: #define FILE_STATUS_NAME "status"
56:
57: // globals
58:
59: const String file_status_name(FILE_STATUS_NAME);
60:
1.305 moko 61: String sql_bind_name(SQL_BIND_NAME);
62: String sql_limit_name(PA_SQL_LIMIT_NAME);
63: String sql_offset_name(PA_SQL_OFFSET_NAME);
64: String sql_default_name(SQL_DEFAULT_NAME);
65: String sql_distinct_name(SQL_DISTINCT_NAME);
66: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
67:
1.301 moko 68: // forwards
69:
70: const UTF16* pa_utf16_encode(const char* in, Charset& source_charset);
71:
1.154 paf 72: // functions
1.127 paf 73:
1.301 moko 74: #ifdef _MSC_VER
75:
76: int pa_stat(const char *pathname, struct stat *buffer){
77: const UTF16* utf16name=pa_utf16_encode(pathname, pa_thread_request().charsets.source());
78: return _wstat64((const wchar_t *)utf16name, buffer);
79: }
80:
81: int pa_open(const char *pathname, int flags, int mode){
82: const UTF16* utf16name=pa_utf16_encode(pathname, pa_thread_request().charsets.source());
83: return _wopen((const wchar_t *)utf16name, flags, mode);
84: }
85:
86: FILE *pa_fopen(const char *pathname, const char *mode){
87: const UTF16* utf16name=pa_utf16_encode(pathname, pa_thread_request().charsets.source());
88: const UTF16* utf16mode=pa_utf16_encode(mode, pa_thread_request().charsets.source());
89: return _wfopen((const wchar_t *)utf16name, (const wchar_t *)utf16mode);
90: }
91:
92: #endif
93:
1.206 paf 94: /// these options were handled but not checked elsewhere, now check them
1.239 misha 95: int pa_get_valid_file_options_count(HashStringValue& options) {
1.206 paf 96: int result=0;
97: if(options.get(PA_SQL_LIMIT_NAME))
98: result++;
99: if(options.get(PA_SQL_OFFSET_NAME))
100: result++;
101: if(options.get(PA_COLUMN_SEPARATOR_NAME))
102: result++;
103: if(options.get(PA_COLUMN_ENCLOSER_NAME))
104: result++;
1.223 misha 105: if(options.get(PA_CHARSET_NAME))
106: result++;
1.206 paf 107: return result;
108: }
109:
1.123 paf 110: #ifndef DOXYGEN
111: struct File_read_action_info {
1.154 paf 112: char **data; size_t *data_size;
1.318 moko 113: char* buf; uint64_t offset; size_t limit;
1.126 paf 114: };
1.123 paf 115: #endif
1.271 moko 116:
1.289 moko 117: static void file_read_action(struct stat& finfo, int f, const String& file_spec, void *context) {
1.310 moko 118: File_read_action_info& info = *static_cast<File_read_action_info *>(context);
1.319 moko 119: size_t to_read_size = check_file_size(info.limit && info.limit < finfo.st_size ? info.limit : finfo.st_size, &file_spec);
1.271 moko 120: if(to_read_size) {
1.320 moko 121: if(info.offset)
122: pa_lseek(f, info.offset, SEEK_SET); // seek never fails as POSIX allows the file offset to be set beyond the EOF
1.310 moko 123: *info.data = info.buf ? info.buf : (char *)pa_malloc_atomic(to_read_size+1);
124: ssize_t result = read(f, *info.data, to_read_size);
1.271 moko 125: if(result<0)
126: throw Exception("file.read", &file_spec, "read failed: %s (%d)", strerror(errno), errno);
1.310 moko 127: *info.data_size = result;
1.123 paf 128: } else { // empty file
1.209 paf 129: // for both, text and binary: for text we need that terminator, for binary we need nonzero pointer to be able to save such files
1.310 moko 130: *info.data = (char *)pa_malloc_atomic(1);
131: *(char*)(*info.data) = 0;
132: *info.data_size = 0;
1.123 paf 133: return;
134: }
1.126 paf 135: }
1.241 misha 136:
1.318 moko 137: File_read_result file_read_binary(const String& file_spec, bool fail_on_read_problem, char* buf, uint64_t offset, size_t limit) {
1.310 moko 138: File_read_result result = {false, 0, 0, 0};
139: File_read_action_info info = {&result.str, &result.length, buf, offset, limit};
1.309 moko 140:
1.310 moko 141: result.success = file_read_action_under_lock(file_spec, "read", file_read_action, &info, 0, fail_on_read_problem);
1.309 moko 142: return result;
143: }
144:
1.154 paf 145: File_read_result file_read(Request_charsets& charsets, const String& file_spec,
1.310 moko 146: bool as_text, HashStringValue *options,
1.229 misha 147: bool fail_on_read_problem,
1.310 moko 148: size_t offset = 0, size_t limit = 0, bool transcode_text_result = true) {
149: File_read_result result = {false, 0, 0, 0};
150: if(options){
151: int valid_options = pa_get_valid_file_options_count(*options);
152: if(valid_options != options->count())
1.262 misha 153: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.241 misha 154: }
1.203 paf 155:
1.310 moko 156: File_read_action_info info = {&result.str, &result.length, 0, offset, limit};
1.161 paf 157:
1.310 moko 158: result.success = file_read_action_under_lock(file_spec, "read", file_read_action, &info, as_text, fail_on_read_problem);
1.223 misha 159:
1.241 misha 160: if(as_text){
161: if(result.success){
1.310 moko 162: Charset* asked_charset = 0;
163: if(options)
164: if(Value* vcharset_name = options->get(PA_CHARSET_NAME))
165: asked_charset = &pa_charsets.get(vcharset_name->as_string());
1.263 misha 166:
1.310 moko 167: asked_charset = pa_charsets.checkBOM(result.str, result.length, asked_charset);
1.287 moko 168:
1.263 misha 169: 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
1.310 moko 170: String::C body = String::C(result.str, result.length);
1.263 misha 171: body=Charset::transcode(body, *asked_charset, charsets.source());
1.236 misha 172:
1.310 moko 173: result.str = const_cast<char*>(body.str); // hacking a little
174: result.length = body.length;
1.131 paf 175: }
176: }
1.241 misha 177: if(result.length)
178: fix_line_breaks(result.str, result.length);
1.123 paf 179: }
1.241 misha 180:
181: return result;
182: }
183:
184: File_read_result file_load(Request& r, const String& file_spec,
1.310 moko 185: bool as_text, HashStringValue *options,
1.241 misha 186: bool fail_on_read_problem,
1.310 moko 187: bool transcode_text_result) {
188:
189: size_t offset = 0;
190: size_t limit = 0;
191:
192: if(options){
193: if(Value *voffset = (Value *)options->get(sql_offset_name))
194: offset = r.process(*voffset).as_int();
195: if(Value *vlimit = (Value *)options->get(sql_limit_name))
196: limit = r.process(*vlimit).as_int();
197: // no check on options count here
198: }
1.241 misha 199:
200: if(file_spec.starts_with("http://")) {
1.310 moko 201: if(offset || limit)
1.289 moko 202: throw Exception(PARSER_RUNTIME, 0, "offset and load options are not supported for HTTP:// file load");
1.241 misha 203:
204: // fail on read problem
1.310 moko 205: File_read_http_result http = pa_internal_file_read_http(r, file_spec, as_text, options, transcode_text_result);
206:
207: File_read_result result = {true, http.str, http.length, http.headers};
208: return result;
1.241 misha 209: } else
1.310 moko 210: return file_read(r.charsets, file_spec, as_text, options, fail_on_read_problem, offset, limit, transcode_text_result);
211: }
1.126 paf 212:
1.310 moko 213: char* file_read_text(Request_charsets& charsets, const String& file_spec, bool fail_on_read_problem) {
214: File_read_result file = file_read(charsets, file_spec, true, 0, fail_on_read_problem);
215: return file.success ? file.str : 0;
1.123 paf 216: }
217:
1.310 moko 218: char* file_load_text(Request& r, const String& file_spec, bool fail_on_read_problem, HashStringValue* options, bool transcode_result) {
219: File_read_result file = file_load(r, file_spec, true, options, fail_on_read_problem, transcode_result);
220: return file.success ? file.str : 0;
221: }
1.257 pretende 222:
1.154 paf 223: #ifdef PA_SAFE_MODE
1.259 misha 224: void check_safe_mode(struct stat finfo, const String& file_spec, const char* fname) {
1.154 paf 225: if(finfo.st_uid/*foreign?*/!=geteuid()
226: && finfo.st_gid/*foreign?*/!=getegid())
1.289 moko 227: throw Exception(PARSER_RUNTIME,
228: &file_spec,
229: "parser is in safe mode: reading files of foreign group and user disabled "
230: "[recompile parser with --disable-safe-mode configure option], "
231: "actual filename '%s', fuid(%d)!=euid(%d) or fgid(%d)!=egid(%d)",
232: fname, finfo.st_uid, geteuid(), finfo.st_gid, getegid()
233: );
1.259 misha 234: }
235: #else
236: void check_safe_mode(struct stat, const String&, const char*) {
237: }
1.257 pretende 238: #endif
1.259 misha 239:
1.257 pretende 240:
1.149 paf 241:
1.154 paf 242: bool file_read_action_under_lock(const String& file_spec,
1.126 paf 243: const char* action_name, File_read_action action, void *context,
244: bool as_text,
1.123 paf 245: bool fail_on_read_problem) {
1.247 misha 246: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.33 paf 247: int f;
248:
249: // first open, next stat:
1.45 paf 250: // directory update of NTFS hard links performed on open.
1.33 paf 251: // ex:
252: // a.html:^test[] and b.html hardlink to a.html
253: // user inserts ! before ^test in a.html
1.126 paf 254: // directory entry of b.html in NTFS not updated at once,
1.35 paf 255: // they delay update till open, so we would receive "!^test[" string
256: // if would do stat, next open.
1.123 paf 257: // later: it seems, even this does not help sometimes
1.301 moko 258: if((f=pa_open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0) {
1.123 paf 259: try {
1.162 paf 260: if(pa_lock_shared_blocking(f)!=0)
1.289 moko 261: throw Exception("file.lock", &file_spec, "shared lock failed: %s (%d), actual filename '%s'", strerror(errno), errno, fname);
1.123 paf 262:
1.124 paf 263: struct stat finfo;
1.298 moko 264: if(pa_fstat(f, &finfo)!=0)
1.124 paf 265: throw Exception("file.missing", // hardly possible: we just opened it OK
1.289 moko 266: &file_spec, "stat failed: %s (%d), actual filename '%s'", strerror(errno), errno, fname);
1.124 paf 267:
1.149 paf 268: check_safe_mode(finfo, file_spec, fname);
1.32 paf 269:
1.289 moko 270: action(finfo, f, file_spec, context);
1.123 paf 271: } catch(...) {
1.162 paf 272: pa_unlock(f);close(f);
1.123 paf 273: if(fail_on_read_problem)
1.154 paf 274: rethrow;
1.289 moko 275: return false;
1.123 paf 276: }
1.87 paf 277:
1.162 paf 278: pa_unlock(f);close(f);
1.72 parser 279: return true;
1.229 misha 280: } else {
1.118 paf 281: if(fail_on_read_problem)
1.289 moko 282: throw Exception(errno==EACCES ? "file.access" : (errno==ENOENT || errno==ENOTDIR || errno==ENODEV) ? "file.missing" : 0,
283: &file_spec, "%s failed: %s (%d), actual filename '%s'", action_name, strerror(errno), errno, fname);
1.118 paf 284: return false;
285: }
1.8 paf 286: }
287:
1.202 paf 288: void create_dir_for_file(const String& file_spec) {
1.63 parser 289: size_t pos_after=1;
1.154 paf 290: size_t pos_before;
291: while((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND) {
1.277 moko 292: pa_mkdir(file_spec.mid(0, pos_before).taint_cstr(String::L_FILE_SPEC), 0775);
1.63 parser 293: pos_after=pos_before+1;
294: }
295: }
296:
1.98 paf 297: bool file_write_action_under_lock(
1.28 paf 298: const String& file_spec,
1.225 misha 299: const char* action_name,
300: File_write_action action,
301: void *context,
1.126 paf 302: bool as_text,
303: bool do_append,
304: bool do_block,
1.110 paf 305: bool fail_on_lock_problem) {
1.247 misha 306: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.28 paf 307: int f;
1.80 paf 308: if(access(fname, W_OK)!=0) // no
1.126 paf 309: create_dir_for_file(file_spec);
1.50 paf 310:
1.301 moko 311: if((f=pa_open(fname,
1.80 paf 312: O_CREAT|O_RDWR
313: |(as_text?_O_TEXT:_O_BINARY)
1.138 paf 314: |(do_append?O_APPEND:PA_O_TRUNC), 0664))>=0) {
1.162 paf 315: if((do_block?pa_lock_exclusive_blocking(f):pa_lock_exclusive_nonblocking(f))!=0) {
1.289 moko 316: Exception e("file.lock", &file_spec, "shared lock failed: %s (%d), actual filename '%s'", strerror(errno), errno, fname);
1.126 paf 317: close(f);
1.110 paf 318: if(fail_on_lock_problem)
319: throw e;
1.98 paf 320: return false;
321: }
1.96 paf 322:
1.158 paf 323: try {
1.254 misha 324: #if (defined(HAVE_FCHMOD) && defined(PA_SAFE_MODE))
325: struct stat finfo;
1.298 moko 326: if(pa_fstat(f, &finfo)==0 && finfo.st_mode & 0111)
1.254 misha 327: fchmod(f, finfo.st_mode & 0666/*clear executable bits*/); // backward: ignore errors if any
328: #endif
329: action(f, context);
1.158 paf 330: } catch(...) {
1.138 paf 331: #ifdef HAVE_FTRUNCATE
1.104 paf 332: if(!do_append)
1.125 paf 333: ftruncate(f, lseek(f, 0, SEEK_CUR)); // one can not use O_TRUNC, read lower
1.138 paf 334: #endif
1.162 paf 335: pa_unlock(f);close(f);
1.154 paf 336: rethrow;
1.158 paf 337: }
1.80 paf 338:
1.138 paf 339: #ifdef HAVE_FTRUNCATE
1.104 paf 340: if(!do_append)
1.125 paf 341: ftruncate(f, lseek(f, 0, SEEK_CUR)); // O_TRUNC truncates even exclusevely write-locked file [thanks to Igor Milyakov <virtan@rotabanner.com> for discovering]
1.138 paf 342: #endif
1.162 paf 343: pa_unlock(f);close(f);
1.98 paf 344: return true;
1.80 paf 345: } else
1.289 moko 346: throw Exception(errno==EACCES ? "file.access" : 0, &file_spec, "%s failed: %s (%d), actual filename '%s'", action_name, strerror(errno), errno, fname);
1.96 paf 347: // here should be nothing, see rethrow above
348: }
349:
350: #ifndef DOXYGEN
351: struct File_write_action_info {
1.250 misha 352: const char* str;
353: size_t length;
1.126 paf 354: };
1.96 paf 355: #endif
1.271 moko 356:
1.96 paf 357: static void file_write_action(int f, void *context) {
1.126 paf 358: File_write_action_info& info=*static_cast<File_write_action_info *>(context);
1.154 paf 359: if(info.length) {
1.271 moko 360: ssize_t written=write(f, info.str, info.length);
1.116 paf 361: if(written<0)
1.271 moko 362: throw Exception("file.write", 0, "write failed: %s (%d)", strerror(errno), errno);
1.275 moko 363: if((size_t)written!=info.length)
1.271 moko 364: throw Exception("file.write", 0, "write failed: %u of %u bytes written", written, info.length);
1.113 paf 365: }
1.96 paf 366: }
1.271 moko 367:
1.96 paf 368: void file_write(
1.250 misha 369: Request_charsets& charsets,
370: const String& file_spec,
371: const char* data,
372: size_t size,
1.126 paf 373: bool as_text,
1.250 misha 374: bool do_append,
375: Charset* asked_charset) {
376:
377: if(as_text && asked_charset){
378: String::C body=String::C(data, size);
379: body=Charset::transcode(body, charsets.source(), *asked_charset);
380: data=body.str;
381: size=body.length;
382: };
383:
1.126 paf 384: File_write_action_info info={data, size};
1.225 misha 385:
1.98 paf 386: file_write_action_under_lock(
1.154 paf 387: file_spec,
1.225 misha 388: "write",
389: file_write_action,
390: &info,
1.154 paf 391: as_text,
392: do_append);
1.30 paf 393: }
394:
1.261 misha 395: static size_t get_dir(char* fname, size_t helper_length){
396: bool dir=false;
397: size_t pos=0;
398: for(pos=helper_length; pos; pos--){
399: char c=fname[pos-1];
400: if(c=='/' || c=='\\'){
401: fname[pos-1]=0;
402: dir=true;
403: } else if(dir) break;
404: }
405: return pos;
406: }
407:
1.312 moko 408: bool entry_exists(const char* fname, struct stat *afinfo) {
409: struct stat lfinfo;
410: bool result=pa_stat(fname, &lfinfo)==0;
411: if(afinfo)
412: *afinfo=lfinfo;
413: return result;
414: }
415:
416: bool entry_exists(const String& file_spec) {
417: return entry_exists(file_spec.taint_cstr(String::L_FILE_SPEC), 0);
418: }
419:
420: static bool entry_ifdir(char *fname, bool need_dir) {
1.261 misha 421: if(need_dir){
422: size_t size=strlen(fname);
423: while(size) {
424: char c=fname[size-1];
425: if(c=='/' || c=='\\')
426: fname[--size]=0;
427: else
428: break;
429: }
430: }
431:
432: struct stat finfo;
1.311 moko 433: if(entry_exists(fname, &finfo)) {
1.261 misha 434: bool is_dir=(finfo.st_mode&S_IFDIR) != 0;
435: return is_dir==need_dir;
436: }
437: return false;
438: }
439:
1.312 moko 440: static bool entry_ifdir(const String& file_spec, bool need_dir) {
441: return entry_ifdir(file_spec.taint_cstrm(String::L_FILE_SPEC), need_dir);
442: }
443:
1.63 parser 444: // throws nothing! [this is required in file_move & file_delete]
1.277 moko 445: static void rmdir(const String& file_spec, size_t pos_after) {
1.261 misha 446: char* dir_spec=file_spec.taint_cstrm(String::L_FILE_SPEC);
447: size_t length=strlen(dir_spec);
448: while( (length=get_dir(dir_spec, length)) && (length > pos_after) ){
1.274 moko 449: #ifdef _MSC_VER
1.312 moko 450: if(!entry_ifdir(dir_spec, true))
1.261 misha 451: break;
452: DWORD attrs=GetFileAttributes(dir_spec);
453: if(
454: (attrs==INVALID_FILE_ATTRIBUTES)
455: || !(attrs & FILE_ATTRIBUTE_DIRECTORY)
456: || (attrs & FILE_ATTRIBUTE_REPARSE_POINT)
457: )
458: break;
459: #endif
460: if( rmdir(dir_spec) )
461: break;
462: };
1.50 paf 463: }
1.239 misha 464:
1.269 misha 465: bool file_delete(const String& file_spec, bool fail_on_problem, bool keep_empty_dirs) {
1.247 misha 466: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.282 moko 467: if(unlink(fname)!=0) {
1.164 paf 468: if(fail_on_problem)
1.289 moko 469: throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,
470: &file_spec, "unlink failed: %s (%d), actual filename '%s'", strerror(errno), errno, fname);
1.93 paf 471: else
472: return false;
1.282 moko 473: }
1.50 paf 474:
1.269 misha 475: if(!keep_empty_dirs)
476: rmdir(file_spec, 1);
477:
1.93 paf 478: return true;
1.60 parser 479: }
1.239 misha 480:
1.269 misha 481: void file_move(const String& old_spec, const String& new_spec, bool keep_empty_dirs) {
1.247 misha 482: const char* old_spec_cstr=old_spec.taint_cstr(String::L_FILE_SPEC);
483: const char* new_spec_cstr=new_spec.taint_cstr(String::L_FILE_SPEC);
1.63 parser 484:
1.126 paf 485: create_dir_for_file(new_spec);
1.63 parser 486:
1.60 parser 487: if(rename(old_spec_cstr, new_spec_cstr)!=0)
1.289 moko 488: throw Exception(errno==EACCES ? "file.access" : errno==ENOENT ? "file.missing" : 0,
489: &old_spec, "rename failed: %s (%d), actual filename '%s' to '%s'", strerror(errno), errno, old_spec_cstr, new_spec_cstr);
1.63 parser 490:
1.269 misha 491: if(!keep_empty_dirs)
492: rmdir(old_spec, 1);
1.31 paf 493: }
494:
1.51 paf 495:
1.215 paf 496: bool file_exist(const String& file_spec) {
1.312 moko 497: return entry_ifdir(file_spec, false);
1.51 paf 498: }
1.239 misha 499:
1.215 paf 500: bool dir_exists(const String& file_spec) {
1.312 moko 501: return entry_ifdir(file_spec, true);
1.65 parser 502: }
1.239 misha 503:
1.215 paf 504: const String* file_exist(const String& path, const String& name) {
1.154 paf 505: String& result=*new String(path);
1.270 moko 506: if(path.last_char() != '/')
507: result << "/";
1.154 paf 508: result << name;
1.215 paf 509: return file_exist(result)?&result:0;
1.43 paf 510: }
1.239 misha 511:
1.43 paf 512: bool file_executable(const String& file_spec) {
1.247 misha 513: return access(file_spec.taint_cstr(String::L_FILE_SPEC), X_OK)==0;
1.44 paf 514: }
515:
1.296 moko 516: bool file_stat(const String& file_spec, uint64_t& rsize, time_t& ratime, time_t& rmtime, time_t& rctime, bool fail_on_read_problem) {
1.247 misha 517: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.154 paf 518: struct stat finfo;
1.298 moko 519: if(pa_stat(fname, &finfo)!=0) {
1.64 parser 520: if(fail_on_read_problem)
1.289 moko 521: throw Exception("file.missing", &file_spec, "getting file size failed: %s (%d), real filename '%s'", strerror(errno), errno, fname);
1.64 parser 522: else
523: return false;
1.282 moko 524: }
1.58 parser 525: rsize=finfo.st_size;
1.299 moko 526: ratime=(time_t)finfo.st_atime;
527: rmtime=(time_t)finfo.st_mtime;
528: rctime=(time_t)finfo.st_ctime;
1.64 parser 529: return true;
1.18 paf 530: }
531:
1.313 moko 532: size_t check_file_size(uint64_t size, const String* file_spec){
1.319 moko 533: if(size > (uint64_t)pa_file_size_limit)
1.313 moko 534: throw Exception(PARSER_RUNTIME, file_spec, "content size of %.15g bytes exceeds the limit (%.15g bytes)", (double)size, (double)pa_file_size_limit);
1.300 moko 535: return (size_t)size;
536: }
537:
1.278 moko 538: /**
539: String related functions
540: */
541:
542: bool capitalized(const char* s){
543: bool upper=true;
544: for(const char* c=s; *c; c++){
545: if(*c != (upper ? toupper((unsigned char)*c) : tolower((unsigned char)*c)))
546: return false;
547: upper=strchr("-_ ", *c) != 0;
548: }
549: return true;
550: }
551:
552: const char* capitalize(const char* s){
553: if(!s || capitalized(s))
554: return s;
555:
556: char* result=pa_strdup(s);
557: if(result){
558: bool upper=true;
559: for(char* c=result; *c; c++){
560: *c=upper ? (char)toupper((unsigned char)*c) : (char)tolower((unsigned char)*c);
561: upper=strchr("-_ ", *c) != 0;
562: }
563: }
564: return (const char*)result;
565: }
566:
1.290 moko 567: char *str_lower(const char *s, size_t helper_length){
568: char *result=pa_strdup(s, helper_length);
569: for(char* c=result; *c; c++)
570: *c=(char)tolower((unsigned char)*c);
571: return result;
572: }
573:
574: char *str_upper(const char *s, size_t helper_length){
575: char *result=pa_strdup(s, helper_length);
576: for(char* c=result; *c; c++)
577: *c=(char)toupper((unsigned char)*c);
578: return result;
579: }
580:
1.278 moko 581: void fix_line_breaks(char *str, size_t& length) {
582: //_asm int 3;
583: const char* const eob=str+length;
584: char* dest=str;
585: // fix DOS: \r\n -> \n
586: // fix Macintosh: \r -> \n
587: char* bol=str;
588: while(char* eol=(char*)memchr(bol, '\r', eob -bol)) {
589: size_t len=eol-bol;
590: if(dest!=bol)
591: memmove(dest, bol, len);
592: dest+=len;
593: *dest++='\n';
594:
595: if(&eol[1]<eob && eol[1]=='\n') { // \r, \n = DOS
596: bol=eol+2;
597: length--;
598: } else // \r, not \n = Macintosh
599: bol=eol+1;
600: }
601: // last piece without \r
602: if(dest!=bol)
603: memmove(dest, bol, eob-bol);
604: str[length]=0; // terminating
605: }
606:
607: /**
608: scans for @a delim[default \n] in @a *row_ref,
609: @return piece of line before it or end of string, if no @a delim found
610: assigns @a *row_ref to point right after delimiter if there were one
611: or to zero if no @a delim were found.
612: */
613:
1.126 paf 614: char* getrow(char* *row_ref, char delim) {
1.229 misha 615: char* result=*row_ref;
616: if(result) {
1.126 paf 617: *row_ref=strchr(result, delim);
1.8 paf 618: if(*row_ref)
619: *((*row_ref)++)=0;
620: else if(!*result)
621: return 0;
1.229 misha 622: }
623: return result;
1.8 paf 624: }
625:
1.126 paf 626: char* lsplit(char* string, char delim) {
1.229 misha 627: if(string) {
1.126 paf 628: char* v=strchr(string, delim);
1.8 paf 629: if(v) {
630: *v=0;
631: return v+1;
632: }
1.229 misha 633: }
634: return 0;
1.8 paf 635: }
636:
1.126 paf 637: char* lsplit(char* *string_ref, char delim) {
1.229 misha 638: char* result=*string_ref;
1.126 paf 639: char* next=lsplit(*string_ref, delim);
1.229 misha 640: *string_ref=next;
641: return result;
1.9 paf 642: }
643:
1.126 paf 644: char* rsplit(char* string, char delim) {
1.229 misha 645: if(string) {
1.126 paf 646: char* v=strrchr(string, delim);
1.18 paf 647: if(v) {
1.9 paf 648: *v=0;
649: return v+1;
650: }
1.229 misha 651: }
1.314 moko 652: return NULL;
653: }
654:
655: #define STRCAT_STEP(str, len) if(str) { memcpy(ptr, str, len); ptr += len; }
656:
657: char *pa_strcat(const char *a, const char *b, const char *c) {
658: size_t len_a = a ? strlen(a) : 0;
1.315 moko 659: size_t len_b = b ? strlen(b) : 0;
660: size_t len_c = c ? strlen(c) : 0;
1.314 moko 661: char *result=new(PointerFreeGC) char[len_a + len_b + len_c +1/*0*/];
662: char *ptr=result;
663: STRCAT_STEP(a, len_a);
664: STRCAT_STEP(b, len_b);
665: STRCAT_STEP(c, len_c);
666: *ptr='\0';
667: return result;
1.10 paf 668: }
669:
1.317 moko 670: const char *pa_filename(const char *path){
671: if(!path)
672: return NULL;
673: for(const char *c = path + strlen(path) - 1; c >= path; c--) {
674: if(*c == '/' || *c == '\\')
675: return c+1;
676: }
677: return path;
678: }
1.229 misha 679:
680: // format: %[flags][width][.precision]type http://msdn.microsoft.com/ru-ru/library/56e442dc(en-us,VS.80).aspx
681: // flags: '-', '+', ' ', '#', '0' http://msdn.microsoft.com/ru-ru/library/8aky45ct(en-us,VS.80).aspx
682: // width, precision: non negative decimal number
683: enum FormatType {
684: FormatInvalid,
685: FormatInt,
686: FormatUInt,
687: FormatDouble
688: };
1.272 moko 689: FormatType format_type(const char* fmt){
1.229 misha 690: enum FormatState {
691: Percent,
692: Flags,
693: Width,
694: Precision,
695: Done
696: } state=Percent;
697:
698: FormatType result=FormatInvalid;
699:
1.272 moko 700: const char* pos=fmt;
1.229 misha 701: while(char c=*(pos++)){
702: switch(state){
703: case Percent:
704: if(c=='%'){
705: state=Flags;
706: } else {
707: return FormatInvalid; // 1st char must be '%' only
708: }
709: break;
710: case Flags:
711: if(strchr("-+ #0", c)!=0){
712: break;
713: }
714: // go to the next step
715: case Width:
716: if(c=='.'){
717: state=Precision;
718: break;
719: }
720: // go to the next step
721: case Precision:
722: if(c>='0' && c<='9'){
723: if(state == Flags) state=Width; // no more flags
724: break;
725: } else if(c=='d' || c=='i'){
726: result=FormatInt;
727: } else if(strchr("feEgG", c)!=0){
728: result=FormatDouble;
729: } else if(strchr("uoxX", c)!=0){
730: result=FormatUInt;
731: } else {
732: return FormatInvalid; // invalid char
733: }
734: state=Done;
735: break;
736: case Done:
737: return FormatInvalid; // no chars allowed after 'type'
738: }
739: }
740: return result;
741: }
742:
743:
1.272 moko 744: const char* format(double value, const char* fmt) {
1.229 misha 745: char local_buf[MAX_NUMBER];
1.235 misha 746: int size=-1;
1.229 misha 747:
748: if(fmt && strlen(fmt)){
749: switch(format_type(fmt)){
750: case FormatDouble:
751: size=snprintf(local_buf, sizeof(local_buf), fmt, value);
752: break;
753: case FormatInt:
754: size=snprintf(local_buf, sizeof(local_buf), fmt, (int)value);
755: break;
756: case FormatUInt:
1.126 paf 757: size=snprintf(local_buf, sizeof(local_buf), fmt, (uint)value);
1.229 misha 758: break;
759: case FormatInvalid:
1.289 moko 760: throw Exception(PARSER_RUNTIME, 0, "Incorrect format string '%s' was specified.", fmt);
1.229 misha 761: }
762: } else
763: size=snprintf(local_buf, sizeof(local_buf), "%d", (int)value);
764:
765: if(size < 0 || size >= MAX_NUMBER-1){ // on win32 we manually reduce max size while printing
1.304 moko 766: throw Exception(PARSER_RUNTIME, 0, "Error occurred white executing snprintf with format string '%s'.", fmt);
1.229 misha 767: }
768:
1.235 misha 769: return pa_strdup(local_buf, (size_t)size);
1.12 paf 770: }
771:
1.36 paf 772: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 773: #ifdef WIN32
1.187 paf 774: size_t to_write = size;
1.12 paf 775: do{
1.316 moko 776: int chunk_written=fwrite(buf, 1, min((size_t)8*0x400, size), stdout);
1.12 paf 777: if(chunk_written<=0)
778: break;
779: size-=chunk_written;
1.36 paf 780: buf=((const char*)buf)+chunk_written;
1.316 moko 781: } while(size>0);
1.12 paf 782:
1.316 moko 783: fflush(stdout);
1.187 paf 784: return to_write-size;
1.12 paf 785: #else
1.316 moko 786: size_t result=fwrite(buf, 1, size, stdout);
787: fflush(stdout);
788: return result;
1.12 paf 789: #endif
1.2 paf 790: }
1.14 paf 791:
1.229 misha 792: enum EscapeState {
793: EscapeRest,
794: EscapeFirst,
795: EscapeSecond,
796: EscapeUnicode
797: };
798:
1.236 misha 799: // @todo prescan for reduce required size (unescaped sting in 1 byte charset requires less memory usually)
1.258 misha 800: char* unescape_chars(const char* cp, int len, Charset* charset, bool js){
1.236 misha 801: char* s=new(PointerFreeGC) char[len+1]; // must be enough (%uXXXX==6 bytes, max utf-8 char length==6 bytes)
1.230 misha 802: char* dst=s;
1.229 misha 803: EscapeState escapeState=EscapeRest;
804: uint escapedValue=0;
805: int srcPos=0;
1.230 misha 806: short int jsCnt=0;
1.236 misha 807: while(srcPos<len){
1.229 misha 808: uchar c=(uchar)cp[srcPos];
1.258 misha 809: if(c=='%' || (c=='\\' && js)){
1.229 misha 810: escapeState=EscapeFirst;
811: } else {
812: switch(escapeState) {
813: case EscapeRest:
1.286 moko 814: if(c=='+' && !js){
1.230 misha 815: *dst++=' ';
1.229 misha 816: } else {
1.230 misha 817: *dst++=c;
1.229 misha 818: }
819: break;
820: case EscapeFirst:
1.232 misha 821: if(charset && c=='u'){
1.229 misha 822: // escaped unicode value: %u0430
823: jsCnt=0;
824: escapedValue=0;
825: escapeState=EscapeUnicode;
826: } else {
1.231 misha 827: if(isxdigit(c)){
1.229 misha 828: escapedValue=hex_value[c] << 4;
829: escapeState=EscapeSecond;
830: } else {
1.230 misha 831: *dst++=c;
1.229 misha 832: escapeState=EscapeRest;
833: }
834: }
835: break;
836: case EscapeSecond:
1.231 misha 837: if(isxdigit(c)){
1.229 misha 838: escapedValue+=hex_value[c];
1.230 misha 839: *dst++=(char)escapedValue;
1.229 misha 840: }
841: escapeState=EscapeRest;
842: break;
843: case EscapeUnicode:
1.231 misha 844: if(isxdigit(c)){
1.229 misha 845: escapedValue=(escapedValue << 4) + hex_value[c];
846: if(++jsCnt==4){
1.230 misha 847: // transcode utf8 char to client charset (we can lost some chars here)
1.232 misha 848: charset->store_Char((XMLByte*&)dst, (XMLCh)escapedValue, '?');
1.229 misha 849: escapeState=EscapeRest;
850: }
851: } else {
852: // not full unicode value
853: escapeState=EscapeRest;
854: }
855: break;
856: }
857: }
858:
859: srcPos++;
860: }
861:
1.230 misha 862: *dst=0; // zero-termination
1.229 misha 863: return s;
864: }
1.24 paf 865:
1.268 misha 866: char *search_stop(char*& current, char cstop_at) {
867: // sanity check
868: if(!current)
869: return 0;
870:
871: // skip leading WS
872: while(*current==' ' || *current=='\t')
873: current++;
874: if(!*current)
875: return current=0;
876:
877: char *result=current;
878: if(char *pstop_at=strchr(current, cstop_at)) {
879: *pstop_at=0;
880: current=pstop_at+1;
881: } else
882: current=0;
883: return result;
884: }
885:
1.24 paf 886: #ifdef WIN32
1.126 paf 887: void back_slashes_to_slashes(char* s) {
1.24 paf 888: if(s)
889: for(; *s; s++)
890: if(*s=='\\')
1.126 paf 891: *s='/';
1.24 paf 892: }
893: #endif
1.41 paf 894:
1.232 misha 895: size_t strpos(const char *str, const char *substr) {
896: const char *p = strstr(str, substr);
897: return (p==0)?STRING_NOT_FOUND:p-str;
898: }
899:
1.226 misha 900: int remove_crlf(char* start, char* end) {
901: char* from=start;
902: char* to=start;
903: bool skip=false;
904: while(from < end){
905: switch(*from){
906: case '\n':
907: case '\r':
908: case '\t':
909: case ' ':
910: if(!skip){
911: *to=' ';
912: to++;
913: skip=true;
914: }
915: break;
916: default:
917: if(from != to)
918: *to=*from;
919: to++;
920: skip=false;
1.69 parser 921: }
1.226 misha 922: from++;
923: }
924: return to-start;
1.91 paf 925: }
926:
1.279 moko 927: const char* hex_digits="0123456789ABCDEF";
928:
1.278 moko 929: const char* hex_string(unsigned char* bytes, size_t size, bool upcase) {
930: char *bytes_hex=new(PointerFreeGC) char [size*2/*byte->hh*/+1/*for zero-teminator*/];
931: unsigned char *src=bytes;
932: unsigned char *end=bytes+size;
933: char *dest=bytes_hex;
934:
1.279 moko 935: const char *hex=upcase? hex_digits : "0123456789abcdef";
1.278 moko 936:
937: for(; src<end; src++) {
938: *dest++=hex[*src/0x10];
939: *dest++=hex[*src%0x10];
940: }
941: *dest=0;
942:
943: return bytes_hex;
944: }
1.91 paf 945:
1.321 moko 946: ssize_t file_block_read(const int f, void* buffer, const size_t size){
947: ssize_t nCount = read(f, buffer, size);
1.221 misha 948: if (nCount < 0)
1.289 moko 949: throw Exception("file.read", 0, "read failed: %s (%d)", strerror(errno), errno);
1.221 misha 950: return nCount;
951: }
952:
1.278 moko 953: static unsigned long crc32Table[256];
954: static void InitCrc32Table()
955: {
956: if(crc32Table[1] == 0){
957: // This is the official polynomial used by CRC32 in PKZip.
958: // Often times the polynomial shown reversed as 0x04C11DB7.
959: static const unsigned long dwPolynomial = 0xEDB88320;
960:
961: for(int i = 0; i < 256; i++)
962: {
963: unsigned long dwCrc = i;
964: for(int j = 8; j > 0; j--)
965: {
966: if(dwCrc & 1)
967: dwCrc = (dwCrc >> 1) ^ dwPolynomial;
968: else
969: dwCrc >>= 1;
970: }
971: crc32Table[i] = dwCrc;
972: }
973: }
974: }
975:
976: inline void CalcCrc32(const unsigned char byte, unsigned long &crc32)
977: {
978: crc32 = ((crc32) >> 8) ^ crc32Table[(byte) ^ ((crc32) & 0x000000FF)];
979: }
980:
981:
1.297 moko 982: unsigned long pa_crc32(const char *in, size_t in_size){
1.218 misha 983: unsigned long crc32=0xFFFFFFFF;
1.220 misha 984:
1.240 misha 985: InitCrc32Table();
1.239 misha 986: for(size_t i = 0; i<in_size; i++)
987: CalcCrc32(in[i], crc32);
1.220 misha 988:
1.218 misha 989: return ~crc32;
990: }
991:
1.289 moko 992: static void file_crc32_file_action(struct stat& finfo, int f, const String&, void *context) {
1.218 misha 993: unsigned long& crc32=*static_cast<unsigned long *>(context);
994: if(finfo.st_size) {
995: InitCrc32Table();
1.220 misha 996: int nCount=0;
1.218 misha 997: do {
1.221 misha 998: unsigned char buffer[FILE_BUFFER_SIZE];
999: nCount = file_block_read(f, buffer, sizeof(buffer));
1.220 misha 1000: for(int i = 0; i < nCount; i++) CalcCrc32(buffer[i], crc32);
1001: } while(nCount > 0);
1.218 misha 1002: }
1003: }
1004:
1.297 moko 1005: unsigned long pa_crc32(const String& file_spec){
1.278 moko 1006: unsigned long crc32=0xFFFFFFFF;
1007: file_read_action_under_lock(file_spec, "crc32", file_crc32_file_action, &crc32);
1008: return ~crc32;
1009: }
1010:
1011: // content-type: xxx; charset=WE-NEED-THIS
1012: // content-type: xxx; charset="WE-NEED-THIS"
1013: // content-type: xxx; charset="WE-NEED-THIS";
1014: Charset* detect_charset(const char* content_type){
1015: if(content_type){
1.291 moko 1016: char* CONTENT_TYPE=str_upper(content_type);
1.278 moko 1017:
1018: if(const char* begin=strstr(CONTENT_TYPE, "CHARSET=")){
1019: begin+=8; // skip "CHARSET="
1020: char* end=0;
1021: if(*begin && (*begin=='"' || *begin =='\'')){
1022: char quote=*begin;
1023: begin++;
1024: end=(char*)strchr(begin, quote);
1025: }
1026: if(!end)
1027: end=(char*)strchr(begin, ';');
1028:
1029: if(end)
1030: *end=0; // terminator
1031:
1.295 moko 1032: return *begin ? &pa_charsets.get_direct(begin) : 0;
1.278 moko 1033: }
1034: }
1035: return 0;
1036: }
1037:
1.301 moko 1038: const UTF16* pa_utf16_encode(const char* in, Charset& source_charset){
1.302 moko 1039: if(!in)
1040: return 0;
1.301 moko 1041:
1.302 moko 1042: String::C sIn(in,strlen(in));
1.301 moko 1043:
1.302 moko 1044: UTF16* utf16=(UTF16*)pa_malloc_atomic(sIn.length*2+2);
1045: UTF16* utf16_end=utf16;
1.301 moko 1046:
1.302 moko 1047: if(!source_charset.isUTF8())
1048: sIn=Charset::transcode(sIn, source_charset, pa_UTF8_charset);
1.301 moko 1049:
1.302 moko 1050: int status=pa_convertUTF8toUTF16((const UTF8**)&sIn.str, (const UTF8*)(sIn.str+sIn.length), &utf16_end, utf16+sIn.length, strictConversion);
1051: if(status != conversionOK)
1052: throw Exception("utf-16 encode", new String(in), "utf-16 conversion failed (%d)", status);
1.301 moko 1053:
1.302 moko 1054: *utf16_end=0;
1.301 moko 1055:
1.302 moko 1056: return utf16;
1.301 moko 1057: }
1058:
1059: const char* pa_utf16_decode(const UTF16* in, Charset& asked_charset){
1060: if(!in)
1061: return 0;
1062:
1063: const UTF16* utf16_start=in;
1064: const UTF16* utf16_end;
1065:
1066: for(utf16_end=in; *utf16_end; utf16_end++);
1067:
1068: char *result = (char *)pa_malloc_atomic((utf16_end-in)*6+1);
1069: char *result_end = result;
1070:
1071: int status=pa_convertUTF16toUTF8(&utf16_start, utf16_end, (UTF8**)&result_end, (UTF8*)(result+(utf16_end-in)*6), strictConversion);
1072:
1073: if(status != conversionOK)
1074: throw Exception("utf-16 decode", 0, "utf conversion failed (%d)", status);
1075:
1076: *result_end='\0';
1077:
1.302 moko 1078: if(asked_charset.isUTF8())
1079: return result;
1.301 moko 1080:
1.302 moko 1081: return Charset::transcode(result, pa_UTF8_charset, asked_charset).cstr();
1.301 moko 1082: }
1.278 moko 1083:
1.283 moko 1084: static bool is_latin(const char *in){
1085: for(; *in; in++){
1086: if ((unsigned char)(*in) > 0x7F)
1087: return false;
1088: }
1089: return true;
1090: }
1091:
1092: #define MAX_IDNA_LENGTH 256
1093:
1.301 moko 1094: const char *pa_idna_encode(const char *in, Charset& source_charset){
1.283 moko 1095: if(!in || is_latin(in))
1096: return in;
1097:
1098: uint32_t utf32[MAX_IDNA_LENGTH];
1099: uint32_t *utf32_end=utf32;
1100:
1101: String::C sIn(in,strlen(in));
1102:
1103: if(!source_charset.isUTF8())
1.295 moko 1104: sIn=Charset::transcode(sIn, source_charset, pa_UTF8_charset);
1.283 moko 1105:
1106: int status=pa_convertUTF8toUTF32((const UTF8**)&sIn.str, (const UTF8*)(sIn.str+sIn.length), &utf32_end, utf32+MAX_IDNA_LENGTH-1, strictConversion);
1107: if(status != conversionOK)
1108: throw Exception("idna encode", new String(in), "utf conversion failed (%d)", status);
1109:
1110: *utf32_end=0;
1111:
1112: char *result = (char *)pa_malloc(MAX_IDNA_LENGTH);
1113: status=pa_idna_to_ascii_4z(utf32, result, MAX_IDNA_LENGTH, 0);
1114: if(status != IDNA_SUCCESS)
1115: throw Exception("idna encode", new String(in), "encode failed: %s", pa_idna_strerror(status));
1116:
1117: return result;
1118: }
1119:
1120: const char *pa_idna_decode(const char *in, Charset &asked_charset){
1121: if(!in || !(*in))
1122: return in;
1123:
1124: uint32_t utf32[MAX_IDNA_LENGTH];
1125: const uint32_t *utf32_start=utf32;
1126: uint32_t *utf32_end;
1127:
1128: int status=pa_idna_to_unicode_4z(in, utf32, MAX_IDNA_LENGTH, 0);
1129: if(status != IDNA_SUCCESS)
1130: throw Exception("idna decode", new String(in), "decode failed: %s", pa_idna_strerror(status));
1131:
1132: for(utf32_end=utf32; *utf32_end; utf32_end++);
1133:
1134: char *result = (char *)pa_malloc(MAX_IDNA_LENGTH);
1135: char *result_end = result;
1136:
1137: status=pa_convertUTF32toUTF8(&utf32_start, utf32_end, (UTF8**)&result_end, (UTF8*)(result+MAX_IDNA_LENGTH-1), strictConversion);
1138:
1139: if(status != conversionOK)
1140: throw Exception("idna decode", new String(in), "utf conversion failed (%d)", status);
1141:
1142: *result_end='\0';
1143:
1144: if(!asked_charset.isUTF8())
1.295 moko 1145: result = (char *)Charset::transcode(result, pa_UTF8_charset, asked_charset).cstr();
1.283 moko 1146:
1147: return result;
1148: }
1.292 moko 1149: /// must be last in this file
1150: #undef vsnprintf
1151: int pa_vsnprintf(char* b, size_t s, const char* f, va_list l) {
1152: if(!s)
1153: return 0;
1154:
1155: int r;
1156: // note: on win32 & maybe somewhere else
1157: // vsnprintf do not writes terminating 0 in 'buffer full' case, reducing
1158: // http://stackoverflow.com/questions/2915672/snprintf-and-visual-studio-2010
1159: --s;
1160:
1161: // clients do not check for negative 's', feature: ignore such prints
1162: if((ssize_t)s<0)
1163: return 0;
1164:
1165: #ifdef _MSC_VER
1166: // win32: if the number of bytes to write exceeds buffer, then count bytes are written and -1 is returned
1167: r=_vsnprintf(b, s, f, l);
1168: if(r<0)
1169: r=s;
1170: #else
1171: r=vsnprintf(b, s, f, l);
1172: /*
1173: solaris: man vsnprintf
1174:
1175: The snprintf() function returns the number of characters
1176: formatted, that is, the number of characters that would have
1177: been written to the buffer if it were large enough. If the
1178: value of n is 0 on a call to snprintf(), an unspecified
1179: value less than 1 is returned.
1180: */
1181:
1182: if(r<0)
1183: r=0;
1184: else if((size_t)r>s)
1185: r=s;
1186: #endif
1187: b[r]=0;
1188: return r;
1189: }
1190:
1191: int pa_snprintf(char* b, size_t s, const char* f, ...) {
1192: va_list l;
1193: va_start(l, f);
1194: int r=pa_vsnprintf(b, s, f, l);
1195: va_end(l);
1196: return r;
1197: }
1198:
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