Annotation of parser3/src/main/pa_common.C, revision 1.86
1.15 paf 1: /** @file
1.16 paf 2: Parser: commonly functions.
3:
1.8 paf 4: Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)
1.85 paf 5: Author: Alexander Petrosyan <paf@design.ru>(http://paf.design.ru)
1.16 paf 6:
1.86 ! paf 7: $Id: pa_common.C,v 1.85 2001/11/05 11:46:27 paf Exp $
1.1 paf 8: */
9:
10: #include "pa_common.h"
1.2 paf 11: #include "pa_types.h"
1.4 paf 12: #include "pa_exception.h"
1.14 paf 13: #include "pa_pool.h"
14: #include "pa_globals.h"
15: #include "pa_value.h"
16: #include "pa_hash.h"
17: #include "pa_string.h"
1.1 paf 18:
1.82 paf 19: #ifndef _O_TEXT
20: # define _O_TEXT 0
21: #endif
22: #ifndef _O_BINARY
23: # define _O_BINARY 0
1.47 paf 24: #endif
1.80 paf 25: #ifndef O_TRUNC
26: # define O_TRUNC 0
27: #endif
28:
1.22 paf 29: #if _MSC_VER
1.1 paf 30:
31: int __vsnprintf(char *b, size_t s, const char *f, va_list l) {
32: int r=_vsnprintf(b, --s, f, l);
33: b[s]=0;
34: return r;
35: }
36: int __snprintf(char *b, size_t s, const char *f, ...) {
37: va_list l;
38: va_start(l, f);
39: int r=__vsnprintf(b, s, f, l);
40: va_end(l);
41: return r;
42: }
43:
44: #endif
1.2 paf 45:
1.86 ! paf 46: static char *strnchr(char *buf, size_t size, char c) {
! 47: for(; size-->0; buf++) {
! 48: if(*buf==c)
! 49: return buf;
! 50: }
! 51:
! 52: return 0;
! 53: }
! 54:
! 55: void fix_line_breaks(char *buf, size_t& size) {
! 56: const char * const eob=buf+size;
1.79 paf 57: char *dest=cstr;
1.72 parser 58: // fix DOS: \r\n -> \n
59: // fix Macintosh: \r -> \n
1.79 paf 60: char *bol=cstr;
1.86 ! paf 61: while(char *eol=strnchr(bol, eob -bol, '\r')) {
1.72 parser 62: size_t len=eol-bol;
63: if(dest!=bol)
64: memcpy(dest, bol, len);
65: dest+=len;
66: *dest++='\n';
67:
68: if(eol[1]=='\n') { // \r,\n = DOS
69: bol=eol+2;
70: size--;
71: } else // \r,not \n = Macintosh
72: bol=eol+1;
73: }
74: // last piece without \r, including terminating 0
75: if(dest!=bol)
76: strcpy(dest, bol);
77: }
1.18 paf 78:
1.28 paf 79: char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) {
1.72 parser 80: void *result; size_t size;
81: return file_read(pool, file_spec, result, size, true, fail_on_read_problem)?(char *)result:0;
1.34 paf 82: }
83: bool file_read(Pool& pool, const String& file_spec,
1.44 paf 84: void*& data, size_t& read_size, bool as_text,
85: bool fail_on_read_problem,
86: size_t offset, size_t limit) {
1.64 parser 87: const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
1.62 parser 88: //printf("file_read(%s)\n", fname);
1.33 paf 89: int f;
1.2 paf 90: struct stat finfo;
1.33 paf 91:
92: // first open, next stat:
1.45 paf 93: // directory update of NTFS hard links performed on open.
1.33 paf 94: // ex:
95: // a.html:^test[] and b.html hardlink to a.html
96: // user inserts ! before ^test in a.html
97: // directory entry of b.html in NTFS not updated at once,
1.35 paf 98: // they delay update till open, so we would receive "!^test[" string
99: // if would do stat, next open.
1.34 paf 100: if(
1.72 parser 101: (f=open(fname, O_RDONLY|(as_text?_O_BINARY/*_O_TEXT*/:_O_BINARY)))>=0 &&
1.34 paf 102: stat(fname, &finfo)==0) {
1.2 paf 103: /*if(exclusive)
104: flock(f, LOCK_EX);*/
1.44 paf 105: size_t max_size=limit?min(offset+limit, finfo.st_size)-offset:finfo.st_size;
1.47 paf 106: if(!max_size) { // eof
1.83 paf 107: if(as_text) {
108: data=pool.malloc(1);
109: *(char*)data=0;
110: } else
111: data=0;
1.47 paf 112: read_size=0;
1.59 parser 113: } else {
1.78 paf 114: data=pool.malloc(max_size+(as_text?1:0), 3);
1.59 parser 115: if(offset)
116: lseek(f, offset, SEEK_SET);
117: read_size=read(f, data, max_size);
1.47 paf 118: }
1.2 paf 119: /*if(exclusive)
120: flock(f, LOCK_UN);*/
121: close(f);
1.59 parser 122: if(!max_size) // eof
123: return true;
1.32 paf 124:
1.44 paf 125: if(read_size>=0 && read_size<=max_size) {
1.34 paf 126: if(as_text)
1.46 paf 127: ((char*&)data)[read_size]=0;
1.34 paf 128: } else
1.73 parser 129: throw Exception(0, 0,
1.33 paf 130: &file_spec,
1.44 paf 131: "read failed: actually read %d bytes count not in [0..%lu] valid range",
132: read_size, (unsigned long)max_size); //never
1.32 paf 133:
1.72 parser 134: if(as_text)
135: fix_line_breaks((char *)data, read_size);
136: return true;
1.2 paf 137: }
1.4 paf 138: if(fail_on_read_problem)
1.73 parser 139: throw Exception(0, 0,
1.33 paf 140: &file_spec,
1.54 parser 141: "read failed: %s (%d), actual filename '%s'",
142: strerror(errno), errno, fname);
1.34 paf 143: return false;
1.8 paf 144: }
145:
1.63 parser 146: static void create_dir_for_file(const String& file_spec) {
147: size_t pos_after=1;
148: int pos_before;
149: while((pos_before=file_spec.pos("/", 1, pos_after))>=0) {
1.64 parser 150: mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_SPEC), 0775);
1.63 parser 151: pos_after=pos_before+1;
152: }
153: }
154:
1.18 paf 155: void file_write(Pool& pool,
1.28 paf 156: const String& file_spec,
1.34 paf 157: const void *data, size_t size,
1.80 paf 158: bool as_text,
159: bool do_append/*,
1.20 paf 160: bool exclusive*/) {
1.64 parser 161: const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
1.28 paf 162: int f;
1.80 paf 163: if(access(fname, W_OK)!=0) // no
1.63 parser 164: create_dir_for_file(file_spec);
1.50 paf 165:
1.80 paf 166: if((f=open(fname,
167: O_CREAT|O_RDWR
168: |(as_text?_O_TEXT:_O_BINARY)
169: |(do_append?O_APPEND:O_TRUNC), 0666))>=0) {
170: /*if(exclusive)
171: flock(f, LOCK_EX);*/
172:
173: if(size) write(f, data, size);
174: #if O_TRUNC==0
175: ftruncate(f, size);
1.18 paf 176: #endif
1.80 paf 177: /*if(exclusive)
178: flock(f, LOCK_UN);*/
179: close(f);
180: } else
181: throw Exception(0, 0,
182: &file_spec,
183: "write failed: %s (%d), actual filename '%s'",
184: strerror(errno), errno, fname);
1.30 paf 185: }
186:
1.63 parser 187: // throws nothing! [this is required in file_move & file_delete]
1.50 paf 188: static void rmdir(const String& file_spec, size_t pos_after) {
189: int pos_before;
190: if((pos_before=file_spec.pos("/", 1, pos_after))>=0)
191: rmdir(file_spec, pos_before+1);
192:
1.64 parser 193: rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_SPEC));
1.50 paf 194: }
1.30 paf 195: void file_delete(Pool& pool, const String& file_spec) {
1.64 parser 196: const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
1.54 parser 197: if(unlink(fname)!=0)
1.73 parser 198: throw Exception(0, 0,
1.33 paf 199: &file_spec,
1.54 parser 200: "unlink failed: %s (%d), actual filename '%s'",
201: strerror(errno), errno, fname);
1.50 paf 202:
203: rmdir(file_spec, 1);
1.60 parser 204: }
205: void file_move(Pool& pool, const String& old_spec, const String& new_spec) {
1.64 parser 206: const char *old_spec_cstr=old_spec.cstr(String::UL_FILE_SPEC);
207: const char *new_spec_cstr=new_spec.cstr(String::UL_FILE_SPEC);
1.63 parser 208:
209: create_dir_for_file(new_spec);
210:
1.60 parser 211: if(rename(old_spec_cstr, new_spec_cstr)!=0)
1.73 parser 212: throw Exception(0, 0,
1.60 parser 213: &old_spec,
214: "rename failed: %s (%d), actual filename '%s' to '%s'",
215: strerror(errno), errno, old_spec_cstr, new_spec_cstr);
1.63 parser 216:
217: rmdir(old_spec, 1);
1.31 paf 218: }
219:
1.51 paf 220:
221: static bool entry_readable(const String& file_spec, bool need_dir) {
1.64 parser 222: const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
1.51 paf 223: struct stat finfo;
224: if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) {
1.73 parser 225: bool is_dir=finfo.st_mode&S_IFDIR != 0;
1.51 paf 226: return is_dir==need_dir;
227: }
228: return false;
229: }
1.31 paf 230: bool file_readable(const String& file_spec) {
1.51 paf 231: return entry_readable(file_spec, false);
232: }
233: bool dir_readable(const String& file_spec) {
234: return entry_readable(file_spec, true);
1.65 parser 235: }
236: String *file_readable(const String& path, const String& name) {
237: String *result=new(path.pool()) String(path);
238: *result << "/";
239: *result << name;
240: return file_readable(*result)?result:0;
1.43 paf 241: }
242: bool file_executable(const String& file_spec) {
1.64 parser 243: return access(file_spec.cstr(String::UL_FILE_SPEC), X_OK)==0;
1.44 paf 244: }
245:
1.64 parser 246: bool file_stat(const String& file_spec,
1.58 parser 247: size_t& rsize,
248: time_t& ratime,
249: time_t& rmtime,
1.64 parser 250: time_t& rctime,
251: bool fail_on_read_problem) {
1.44 paf 252: Pool& pool=file_spec.pool();
1.64 parser 253: const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
1.44 paf 254: struct stat finfo;
255: if(stat(fname, &finfo)!=0)
1.64 parser 256: if(fail_on_read_problem)
1.73 parser 257: throw Exception(0, 0,
1.67 parser 258: &file_spec,
259: "getting file size failed: %s (%d), real filename '%s'",
260: strerror(errno), errno, fname);
1.64 parser 261: else
262: return false;
1.58 parser 263: rsize=finfo.st_size;
264: ratime=finfo.st_atime;
265: rmtime=finfo.st_mtime;
266: rctime=finfo.st_ctime;
1.64 parser 267: return true;
1.18 paf 268: }
269:
1.8 paf 270: char *getrow(char **row_ref, char delim) {
271: char *result=*row_ref;
272: if(result) {
273: *row_ref=strchr(result, delim);
274: if(*row_ref)
275: *((*row_ref)++)=0;
276: else if(!*result)
277: return 0;
278: }
279: return result;
280: }
281:
1.23 paf 282: char *lsplit(char *string, char delim) {
283: if(string) {
284: char *v=strchr(string, delim);
1.8 paf 285: if(v) {
286: *v=0;
287: return v+1;
288: }
289: }
290: return 0;
291: }
292:
293: char *lsplit(char **string_ref, char delim) {
294: char *result=*string_ref;
295: char *next=lsplit(*string_ref, delim);
296: *string_ref=next;
297: return result;
1.9 paf 298: }
299:
300: char *rsplit(char *string, char delim) {
1.18 paf 301: if(string) {
1.9 paf 302: char *v=strrchr(string, delim);
1.18 paf 303: if(v) {
1.9 paf 304: *v=0;
305: return v+1;
306: }
307: }
308: return NULL;
1.10 paf 309: }
310:
1.37 paf 311: /// @todo less stupid type detection
1.10 paf 312: char *format(Pool& pool, double value, char *fmt) {
1.78 paf 313: char *result=(char *)pool.malloc(MAX_NUMBER, 4);
1.10 paf 314: if(fmt)
315: if(strpbrk(fmt, "diouxX"))
316: if(strpbrk(fmt, "ouxX"))
1.33 paf 317: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 318: else
1.33 paf 319: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 320: else
321: snprintf(result, MAX_NUMBER, fmt, value);
322: else
1.33 paf 323: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 324:
325: return result;
1.12 paf 326: }
327:
1.36 paf 328: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 329: #ifdef WIN32
330: do{
331: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
332: if(chunk_written<=0)
333: break;
334: size-=chunk_written;
1.36 paf 335: buf=((const char*)buf)+chunk_written;
1.12 paf 336: } while(size>0);
337:
338: return size;
339: #else
1.13 paf 340: return fwrite(buf, 1, size, stdout);
1.12 paf 341: #endif
1.2 paf 342: }
1.14 paf 343:
1.77 parser 344: char *unescape_chars(Pool& pool, const char *cp, int len) {
1.78 paf 345: char *s=(char *)pool.malloc(len + 1, 5);
1.14 paf 346: enum EscapeState {
1.33 paf 347: EscapeRest,
348: EscapeFirst,
1.14 paf 349: EscapeSecond
350: } escapeState=EscapeRest;
351: int escapedValue=0;
352: int srcPos=0;
353: int dstPos=0;
354: while(srcPos < len) {
355: int ch=cp[srcPos];
356: switch(escapeState) {
357: case EscapeRest:
358: if(ch=='%') {
359: escapeState=EscapeFirst;
360: } else if(ch=='+') {
361: s[dstPos++]=' ';
362: } else {
363: s[dstPos++]=ch;
364: }
365: break;
366: case EscapeFirst:
367: escapedValue=hex_value[ch] << 4;
368: escapeState=EscapeSecond;
369: break;
370: case EscapeSecond:
371: escapedValue +=hex_value[ch];
372: s[dstPos++]=escapedValue;
373: escapeState=EscapeRest;
374: break;
375: }
376: srcPos++;
377: }
378: s[dstPos]=0;
379: return s;
380: }
381:
1.52 paf 382: /// used by attributed_meaning_to_string / append_attribute_subattribute
1.40 paf 383: struct Attributed_meaning_info {
1.52 paf 384: String *header; // header line being constructed
385: String::Untaint_lang lang; // language in which to append to that line
1.40 paf 386: };
1.17 paf 387: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 388: void *info) {
389: if(akey==VALUE_NAME)
390: return;
391:
1.40 paf 392: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
393:
1.14 paf 394: // ...; charset=windows1251
1.48 paf 395: *ami.header << "; ";
1.70 parser 396: ami.header->append(akey, ami.lang);
1.48 paf 397: *ami.header << "=";
1.70 parser 398: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang);
1.14 paf 399: }
1.49 paf 400: const String& attributed_meaning_to_string(Value& meaning,
401: String::Untaint_lang lang) {
1.20 paf 402: String &result=*new(meaning.pool()) String(meaning.pool());
1.75 parser 403: if(Hash *hash=meaning.get_hash(0)) {
1.14 paf 404: // $value(value) $subattribute(subattribute value)
405: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 406: result.append(value->as_string(), lang, true);
1.14 paf 407:
1.40 paf 408: Attributed_meaning_info attributed_meaning_info={
1.52 paf 409: &result,
410: lang
1.40 paf 411: };
412: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 413: } else // result value
1.40 paf 414: result.append(meaning.as_string(), lang, true);
1.14 paf 415:
416: return result;
1.24 paf 417: }
418:
419: #ifdef WIN32
420: void back_slashes_to_slashes(char *s) {
421: if(s)
422: for(; *s; s++)
423: if(*s=='\\')
424: *s='/';
425: }
1.42 paf 426: /*
427: void slashes_to_back_slashes(char *s) {
428: if(s)
429: for(; *s; s++)
430: if(*s=='/')
431: *s='\\';
432: }
433: */
1.24 paf 434: #endif
1.41 paf 435:
436: bool StrEqNc(const char *s1, const char *s2, bool strict) {
437: while(true) {
438: if(!(*s1)) {
439: if(!(*s2))
440: return true;
441: else
442: return !strict;
443: } else if(!(*s2))
444: return !strict;
445: if(isalpha(*s1)) {
446: if(tolower(*s1) !=tolower(*s2))
447: return false;
448: } else if((*s1) !=(*s2))
449: return false;
450: s1++;
451: s2++;
452: }
1.57 parser 453: }
454:
1.84 paf 455: static bool isLeap(int year) {
1.57 parser 456: return !(
457: (year % 4) || ((year % 400) && !(year % 100))
458: );
459: }
460:
461: int getMonthDays(int year, int month) {
462: int monthDays[]={
463: 31,
464: isLeap(year) ? 29 : 28,
465: 31,
466: 30,
467: 31,
468: 30,
469: 31,
470: 31,
471: 30,
472: 31,
473: 30,
474: 31
475: };
476: return monthDays[month];
1.41 paf 477: }
1.69 parser 478:
479: void remove_crlf(char *start, char *end) {
480: for(char *p=start; p<end; p++)
481: switch(*p) {
482: case '\n': *p='|'; break;
483: case '\r': *p=' '; break;
484: }
1.74 parser 485: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to pa_common.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main