Annotation of parser3/src/main/pa_string.C, revision 1.124
1.45 paf 1: /** @file
1.55 paf 2: Parser: string class. @see untasize_t.C.
1.46 paf 3:
1.36 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.119 paf 5: Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru)
1.46 paf 6:
1.124 ! paf 7: $Id: pa_string.C,v 1.123 2001/11/19 12:17:06 paf Exp $
1.4 paf 8: */
9:
1.48 paf 10: #include "pa_config_includes.h"
1.1 paf 11:
1.70 paf 12: #include "pcre.h"
1.82 parser 13: #include "internal.h"
1.70 paf 14:
1.13 paf 15: #include "pa_pool.h"
1.12 paf 16: #include "pa_string.h"
1.5 paf 17: #include "pa_hash.h"
1.22 paf 18: #include "pa_exception.h"
1.53 paf 19: #include "pa_common.h"
1.60 paf 20: #include "pa_array.h"
21: #include "pa_globals.h"
1.61 paf 22: #include "pa_table.h"
1.101 parser 23: #include "pa_dictionary.h"
1.60 paf 24:
1.75 paf 25: String::String(Pool& apool, const char *src, size_t src_size, bool tainted) :
1.120 paf 26: Pooled(apool) {
1.28 paf 27: last_chunk=&head;
28: head.count=CR_PREALLOCATED_COUNT;
1.5 paf 29: append_here=head.rows;
1.123 paf 30: head_link=0;
1.28 paf 31: link_row=&head.rows[head.count];
1.41 paf 32:
33: if(src)
1.75 paf 34: if(tainted)
35: APPEND_TAINTED(src, src_size, 0, 0);
1.41 paf 36: else
1.75 paf 37: APPEND_CLEAN(src, src_size, 0, 0);
1.1 paf 38: }
39:
1.94 parser 40: String::String(const String& src) :
1.120 paf 41: Pooled(src.pool()) {
1.8 paf 42: head.count=CR_PREALLOCATED_COUNT;
43:
1.116 paf 44: uint src_used_rows=src.used_rows();
1.8 paf 45: if(src_used_rows<=head.count) {
1.55 paf 46: // all new rows fit size_to preallocated area
1.98 parser 47: last_chunk=&head;
1.116 paf 48: uint curr_chunk_rows=head.count;
1.8 paf 49: memcpy(head.rows, src.head.rows, sizeof(Chunk::Row)*src_used_rows);
50: append_here=&head.rows[src_used_rows];
51: link_row=&head.rows[curr_chunk_rows];
52: } else {
53: // warning:
1.10 paf 54: // heavily relies on the fact
55: // "preallocated area is the same for all strings"
1.8 paf 56: //
57: // info:
58: // allocating only enough mem to fit src string rows
59: // next append would allocate a new chunk
60: //
1.55 paf 61: // new rows don't fit size_to preallocated area: splitting size_to two chunks
1.8 paf 62: // preallocated chunk src to constructing head
63: memcpy(head.rows, src.head.rows, sizeof(Chunk::Row)*head.count);
1.55 paf 64: // remaining rows size_to new_chunk
1.116 paf 65: uint curr_chunk_rows=src_used_rows-head.count;
1.98 parser 66: last_chunk=static_cast<Chunk *>(
1.116 paf 67: malloc(sizeof(uint)+sizeof(Chunk::Row)*curr_chunk_rows+sizeof(Chunk *), 9));
1.98 parser 68: last_chunk->count=curr_chunk_rows;
1.123 paf 69: head_link=last_chunk;
1.98 parser 70: append_here=link_row=&last_chunk->rows[last_chunk->count];
1.8 paf 71:
1.123 paf 72: Chunk *old_chunk=src.head_link;
1.98 parser 73: Chunk::Row *new_rows=last_chunk->rows;
1.116 paf 74: uint rows_left_to_copy=last_chunk->count;
1.8 paf 75: while(true) {
1.116 paf 76: uint old_count=old_chunk->count;
1.8 paf 77: Chunk *next_chunk=old_chunk->rows[old_count].link;
78: if(next_chunk) {
79: // not last source chunk
80: // taking it all
81: memcpy(new_rows, old_chunk->rows, sizeof(Chunk::Row)*old_count);
82: new_rows+=old_count;
83: rows_left_to_copy-=old_count;
84:
85: old_chunk=next_chunk;
86: } else {
87: // the last source chunk
88: // taking only those rows of chunk that _left_to_copy
89: memcpy(new_rows, old_chunk->rows, sizeof(Chunk::Row)*rows_left_to_copy);
90: break;
91: }
92: }
1.5 paf 93: }
1.8 paf 94: link_row->link=0;
1.115 paf 95: src_used_rows;
1.120 paf 96: }
97:
98: size_t String::size() const {
99: size_t result=0;
1.123 paf 100: STRING_FOREACH_ROW(
1.120 paf 101: result+=row->item.size;
1.123 paf 102: );
1.120 paf 103: break2:
104: return result;
1.94 parser 105: }
106:
1.115 paf 107: /// @todo not very optimal
108: uint String::used_rows() const {
109: uint result=0;
1.123 paf 110: STRING_FOREACH_ROW(
111: result++;
112: );
1.115 paf 113: break2:
114: return result;
115: }
1.94 parser 116: void String::expand() {
1.116 paf 117: uint new_chunk_count=last_chunk->count+CR_GROW_COUNT;
1.122 paf 118: if(new_chunk_count>MAX_USHORT)
119: new_chunk_count=MAX_USHORT;
120:
1.94 parser 121: last_chunk=static_cast<Chunk *>(
1.116 paf 122: malloc(sizeof(uint)+sizeof(Chunk::Row)*new_chunk_count+sizeof(Chunk *), 10));
1.94 parser 123: last_chunk->count=new_chunk_count;
124: link_row->link=last_chunk;
125: append_here=last_chunk->rows;
126: link_row=&last_chunk->rows[last_chunk->count];
127: link_row->link=0;
1.5 paf 128: }
1.28 paf 129:
1.13 paf 130: String& String::real_append(STRING_APPEND_PARAMS) {
1.9 paf 131: if(!src)
132: return *this;
1.26 paf 133: if(!size)
134: size=strlen(src);
135: if(!size)
1.9 paf 136: return *this;
1.122 paf 137:
138: while(size>MAX_USHORT) {
139: if(chunk_is_full())
140: expand();
141:
142: append_here->item.ptr=src;
143: append_here->item.size=MAX_USHORT;
144: append_here->item.lang=lang;
145: #ifndef NO_STRING_ORIGIN
146: append_here->item.origin.file=file;
147: append_here->item.origin.line=line;
148: #endif
149: append_here++;
150:
151: src+=MAX_USHORT;
152: size-=MAX_USHORT;
153: }
1.9 paf 154:
1.1 paf 155: if(chunk_is_full())
156: expand();
157:
158: append_here->item.ptr=src;
1.121 paf 159: append_here->item.size=size;
1.52 paf 160: append_here->item.lang=lang;
1.13 paf 161: #ifndef NO_STRING_ORIGIN
1.14 paf 162: append_here->item.origin.file=file;
163: append_here->item.origin.line=line;
1.13 paf 164: #endif
1.115 paf 165: append_here++;
1.1 paf 166:
167: return *this;
1.97 parser 168: }
169:
170: char String::first_char() const {
1.120 paf 171: if(!used_rows())
1.112 parser 172: throw Exception(0, 0,
1.97 parser 173: this,
174: "getting first char of empty string");
175:
176: return *head.rows[0].item.ptr;
1.1 paf 177: }
178:
1.16 paf 179: uint String::hash_code() const {
1.7 paf 180: uint result=0;
1.123 paf 181: STRING_FOREACH_ROW(
1.6 paf 182: result=Hash::generic_code(result, row->item.ptr, row->item.size);
1.123 paf 183: );
1.5 paf 184: break2:
185: return result;
186: }
187:
1.60 paf 188: /// @todo move 'lang' skipping to pos
189: int String::cmp(int& partial, const String& src,
190: size_t this_offset, Untaint_lang lang) const {
1.59 paf 191: partial=-1;
1.55 paf 192: this_offset=min(this_offset, size()-1);
193:
1.16 paf 194: const Chunk *a_chunk=&head;
195: const Chunk *b_chunk=&src.head;
196: const Chunk::Row *a_row=a_chunk->rows;
197: const Chunk::Row *b_row=b_chunk->rows;
1.55 paf 198: size_t a_offset=this_offset;
199: size_t b_offset=0;
1.9 paf 200: Chunk::Row *a_end=append_here;
201: Chunk::Row *b_end=src.append_here;
1.116 paf 202: uint a_countdown=a_chunk->count;
203: uint b_countdown=b_chunk->count;
204: int result;
1.60 paf 205: size_t pos=0;
1.33 paf 206:
1.83 parser 207: bool a_break=size()==0;
1.91 parser 208: bool b_break=src.size()==0;
1.83 parser 209: if(!(a_break || b_break)) while(true) {
1.55 paf 210: if(pos+a_row->item.size > this_offset) {
1.71 paf 211: if(lang!=UL_UNSPECIFIED && a_row->item.lang!=lang)
1.60 paf 212: return -1; // wrong lang -- bail out
213:
1.55 paf 214: int size_diff=
215: (a_row->item.size-a_offset)-
216: (b_row->item.size-b_offset);
217:
218: if(size_diff==0) { // a has same size as b
1.60 paf 219: result=memcmp(a_row->item.ptr+a_offset, b_row->item.ptr+b_offset,
220: a_row->item.size-a_offset);
1.55 paf 221: if(result)
222: return result;
1.60 paf 223: pos+=a_row->item.size;
1.55 paf 224: a_row++; a_countdown--; a_offset=0;
225: b_row++; b_countdown--; b_offset=0;
226: } else if (size_diff>0) { // a longer
1.60 paf 227: result=memcmp(a_row->item.ptr+a_offset, b_row->item.ptr+b_offset,
228: b_row->item.size-b_offset);
1.55 paf 229: if(result)
230: return result;
231: a_offset+=b_row->item.size-b_offset;
232: b_row++; b_countdown--; b_offset=0;
233: } else { // b longer
1.60 paf 234: result=memcmp(a_row->item.ptr+a_offset, b_row->item.ptr+b_offset,
235: a_row->item.size-a_offset);
1.55 paf 236: if(result)
237: return result;
238: b_offset+=a_row->item.size-a_offset;
1.60 paf 239: pos+=a_row->item.size;
1.55 paf 240: a_row++; a_countdown--; a_offset=0;
241: }
1.83 parser 242: if(b_break=b_row==b_end) {
243: a_break=a_row==a_end;
244: break;
245: }
1.55 paf 246: if(!b_countdown) {
247: b_chunk=b_row->link;
248: b_row=b_chunk->rows;
249: b_countdown=b_chunk->count;
250: }
251: } else {
1.60 paf 252: a_offset-=a_row->item.size;
253: pos+=a_row->item.size;
254: a_row++; a_countdown--;
1.9 paf 255: }
256:
1.83 parser 257: if(a_break=a_row==a_end) {
258: b_break=b_row==b_end;
259: break;
260: }
1.11 paf 261: if(!a_countdown) {
1.9 paf 262: a_chunk=a_row->link;
263: a_row=a_chunk->rows;
1.11 paf 264: a_countdown=a_chunk->count;
1.9 paf 265: }
1.27 paf 266: }
1.55 paf 267: if(a_break==b_break) { // ended simultaneously
268: partial=0; return 0;
269: } else if(a_break) { // first bytes equal, but a ended before b
270: partial=1; return -1;
271: } else {
272: partial=2; return +1;
273: }
1.27 paf 274: }
275:
1.60 paf 276: /// @todo move 'lang' skipping to pos
1.59 paf 277: int String::cmp(int& partial, const char* b_ptr, size_t src_size,
1.60 paf 278: size_t this_offset, Untaint_lang lang) const {
1.59 paf 279: partial=-1;
1.50 paf 280: size_t b_size=src_size?src_size:b_ptr?strlen(b_ptr):0;
1.59 paf 281: this_offset=min(this_offset, size()-1);
1.27 paf 282:
283: const Chunk *a_chunk=&head;
284: const Chunk::Row *a_row=a_chunk->rows;
1.59 paf 285: size_t a_offset=this_offset;
1.55 paf 286: size_t b_offset=0;
1.27 paf 287: Chunk::Row *a_end=append_here;
1.116 paf 288: uint a_countdown=a_chunk->count;
1.60 paf 289: size_t pos=0;
1.52 paf 290:
1.83 parser 291: bool a_break=size()==0;
292: bool b_break=b_size==0;
293: if(!(a_break || b_break)) while(true) {
1.59 paf 294: if(pos+a_row->item.size > this_offset) {
1.71 paf 295: if(lang!=UL_UNSPECIFIED && a_row->item.lang!=lang)
1.60 paf 296: return -1; // wrong lang -- bail out
297:
1.59 paf 298: int size_diff=
299: (a_row->item.size-a_offset)-
300: (b_size-b_offset);
301:
302: if(size_diff==0) { // a has same size as b
1.116 paf 303: if(int result=memcmp(a_row->item.ptr+a_offset, b_ptr+b_offset,
1.59 paf 304: a_row->item.size-a_offset)!=0)
305: return result;
1.60 paf 306: pos+=a_row->item.size;
1.59 paf 307: a_row++; a_countdown--; a_offset=0;
308: b_break=true;
309: } else if (size_diff>0) { // a longer
1.116 paf 310: if(int result=memcmp(a_row->item.ptr+a_offset, b_ptr+b_offset,
1.59 paf 311: b_size-b_offset)!=0)
312: return result;
313: a_offset+=b_size-b_offset;
314: b_break=true;
315: } else { // b longer
1.116 paf 316: if(int result=memcmp(a_row->item.ptr+a_offset, b_ptr+b_offset,
1.59 paf 317: a_row->item.size-a_offset)!=0)
318: return result;
319: b_offset+=a_row->item.size-a_offset;
1.60 paf 320: pos+=a_row->item.size;
1.59 paf 321: a_row++; a_countdown--; a_offset=0;
322: }
323: } else {
1.60 paf 324: a_offset-=a_row->item.size;
325: pos+=a_row->item.size;
326: a_row++; a_countdown--;
1.27 paf 327: }
328:
1.86 parser 329: a_break=a_row==a_end;
330: if(a_break || b_break)
1.83 parser 331: break;
1.27 paf 332: if(!a_countdown) {
333: a_chunk=a_row->link;
334: a_row=a_chunk->rows;
335: a_countdown=a_chunk->count;
1.9 paf 336: }
337: }
1.55 paf 338: if(a_break==b_break) { // ended simultaneously
339: partial=0; return 0;
340: } else if(a_break) { // first bytes equal, but a ended before b
341: partial=1; return -1;
342: } else {
343: partial=2; return +1;
344: }
1.5 paf 345: }
1.46 paf 346:
347: #ifndef NO_STRING_ORIGIN
348: const Origin& String::origin() const {
1.120 paf 349: if(!used_rows()) {
1.96 parser 350: static const Origin empty_origin={"empty string"};
351: return empty_origin;
352: }
1.46 paf 353:
1.49 paf 354: // determining origin by last appended piece
1.50 paf 355: // because first one frequently constant.
356: // ex: ^load[/file] "document_root" + "/file"
1.80 paf 357: // when last peice is constant,
358: // ex: parser_root_auto_path{dynamic} / auto.p{const}
359: // using first piece
360: Origin& last_origin=append_here[-1].item.origin;
361: return last_origin.file ? last_origin : head.rows[0].item.origin;
1.46 paf 362: }
363: #endif
1.53 paf 364:
1.69 paf 365: String& String::mid(size_t start, size_t finish) const {
1.107 parser 366: String& result=*NEW String(pool());
367:
1.53 paf 368: start=max(0, start);
1.111 parser 369: finish=min(size(), finish);
1.60 paf 370: if(start==finish)
1.107 parser 371: return result;
1.53 paf 372:
373: size_t pos=0;
1.123 paf 374: STRING_FOREACH_ROW(
375: size_t item_finish=pos+row->item.size;
376: if(item_finish > start) { // started now or already?
377: bool started=result.size()==0; // started now?
378: bool finished=finish <= item_finish; // finished now?
379: size_t offset=started?start-pos:0;
380: size_t size=finished?finish-pos:row->item.size;
381: result.APPEND(
382: row->item.ptr+offset, size-offset,
383: row->item.lang,
384: row->item.origin.file, row->item.origin.line);
385: if(finished)
1.53 paf 386: goto break2;
387: }
1.123 paf 388: pos+=row->item.size;
389: );
1.53 paf 390: break2:
1.60 paf 391: // SAPI::log(pool(), "piece of '%s' from %d to %d is '%s'",
392: //cstr(), start, finish, result.cstr());
1.53 paf 393: return result;
1.54 paf 394: }
395:
1.60 paf 396: int String::pos(const String& substr,
1.116 paf 397: int result, Untaint_lang lang) const {
1.58 paf 398: for(; result<size(); result++) {
1.60 paf 399: int partial; cmp(partial, substr, result, lang);
1.58 paf 400: if(
401: partial==0 || // full match
402: partial==2) // 'substr' starts 'this'+'result'
403: return result;
404: }
405:
406: return -1;
407: }
408:
1.60 paf 409: int String::pos(const char *substr, size_t substr_size,
1.116 paf 410: int result, Untaint_lang lang) const {
1.57 paf 411: for(; result<size(); result++) {
1.60 paf 412: int partial; cmp(partial, substr, substr_size, result, lang);
1.55 paf 413: if(
414: partial==0 || // full match
415: partial==2) // 'substr' starts 'this'+'result'
416: return result;
417: }
418:
419: return -1;
1.60 paf 420: }
421:
422: void String::split(Array& result,
423: size_t* pos_after_ref,
424: const char *delim, size_t delim_size,
425: Untaint_lang lang, int limit) const {
1.124 ! paf 426: int self_size=size();
1.60 paf 427: if(delim_size) {
428: size_t pos_after=pos_after_ref?*pos_after_ref:0;
429: int pos_before;
430: // while we have 'delim'...
431: for(; (pos_before=pos(delim, delim_size, pos_after, lang))>=0 && limit; limit--) {
1.69 paf 432: result+=&mid(pos_after, pos_before);
1.60 paf 433: pos_after=pos_before+delim_size;
434: }
435: // last piece
1.124 ! paf 436: if(pos_after<self_size && limit) {
! 437: result+=&mid(pos_after, self_size);
! 438: pos_after=self_size;
1.60 paf 439: }
440: if(pos_after_ref)
441: *pos_after_ref=pos_after;
442: } else { // empty delim
443: result+=this;
444: if(pos_after_ref)
1.124 ! paf 445: *pos_after_ref+=self_size;
1.60 paf 446: }
447: }
448:
449: void String::split(Array& result,
450: size_t* pos_after_ref,
451: const String& delim, Untaint_lang lang,
452: int limit) const {
453: if(delim.size()) {
454: size_t pos_after=pos_after_ref?*pos_after_ref:0;
455: int pos_before;
456: // while we have 'delim'...
457: for(; (pos_before=pos(delim, pos_after, lang))>=0 && limit; limit--) {
1.69 paf 458: result+=&mid(pos_after, pos_before);
1.60 paf 459: pos_after=pos_before+delim.size();
460: }
461: // last piece
462: if(pos_after<size() && limit) {
1.69 paf 463: result+=&mid(pos_after, size());
1.60 paf 464: pos_after=size();
465: }
466: if(pos_after_ref)
467: *pos_after_ref=pos_after;
468: } else { // empty delim
469: result+=this;
470: if(pos_after_ref)
471: *pos_after_ref+=size();
472: }
1.61 paf 473: }
474:
1.63 paf 475: static void regex_options(char *options, int *result){
476: struct Regex_option {
477: char key;
478: int clear, set;
479: int *result;
480: } regex_option[]={
481: {'i', 0, PCRE_CASELESS, result}, // a=A
1.79 paf 482: {'s', 0, PCRE_DOTALL, result}, // \n\n$ [default]
1.63 paf 483: {'x', 0, PCRE_EXTENDED, result}, // whitespace in regex ignored
484: {'m', PCRE_DOTALL, PCRE_MULTILINE, result}, // ^aaa\n$^bbb\n$
485: {'g', 0, true, result+1}, // many rows
486: {0},
487: };
488: result[0]=PCRE_EXTRA | PCRE_DOTALL;
489: result[1]=0;
490:
491: if(options)
492: for(Regex_option *o=regex_option; o->key; o++)
493: if(
494: strchr(options, o->key) ||
495: strchr(options, toupper(o->key))) {
496: *(o->result)&=~o->clear;
497: *(o->result)|=o->set;
498: }
499: }
500:
1.88 parser 501: /// @todo maybe need speedup: some option to remove pre/match/post string generation
1.77 paf 502: bool String::match(const unsigned char *pcre_tables,
503: const String *aorigin,
1.62 paf 504: const String& regexp,
1.63 paf 505: const String *options,
1.64 paf 506: Table **table,
1.95 parser 507: Row_action row_action, void *info,
508: bool *was_global) const {
1.64 paf 509:
1.73 paf 510: if(!regexp.size())
1.112 parser 511: throw Exception(0, 0,
1.73 paf 512: aorigin,
513: "regexp is empty");
1.118 paf 514: const char *pattern=regexp.cstr();
1.62 paf 515: const char *errptr;
516: int erroffset;
1.63 paf 517: int option_bits[2]; regex_options(options?options->cstr():0, option_bits);
1.95 parser 518: if(was_global)
519: *was_global=option_bits[1]!=0;
1.63 paf 520: pcre *code=pcre_compile(pattern, option_bits[0],
1.62 paf 521: &errptr, &erroffset,
1.74 paf 522: pcre_tables);
1.62 paf 523:
1.67 paf 524: if(!code)
1.112 parser 525: throw Exception(0, 0,
1.69 paf 526: ®exp.mid(erroffset, regexp.size()),
1.74 paf 527: "regular expression syntax error - %s", errptr);
1.62 paf 528:
1.63 paf 529: int info_substrings=pcre_info(code, 0, 0);
530: if(info_substrings<0) {
1.100 parser 531: pcre_free(code);
1.112 parser 532: throw Exception(0, 0,
1.73 paf 533: aorigin,
1.76 paf 534: "pcre_info error (%d)",
1.73 paf 535: info_substrings);
1.63 paf 536: }
537:
538: int startoffset=0;
1.118 paf 539: const char *subject=cstr();
1.62 paf 540: int length=strlen(subject);
1.63 paf 541: int ovecsize;
542: int *ovector=(int *)malloc(sizeof(int)*
1.114 paf 543: (ovecsize=(1/*match*/+info_substrings)*3), 11);
1.62 paf 544:
1.64 paf 545: { // create table
546: Array& columns=*NEW Array(pool());
547: columns+=string_pre_match_name;
548: columns+=string_match_name;
549: columns+=string_post_match_name;
550: for(int i=1; i<=info_substrings; i++) {
551: char *column=(char *)malloc(MAX_NUMBER);
552: snprintf(column, MAX_NUMBER, "%d", i);
553: columns+=NEW String(pool(), column); // .i column name
554: }
555: *table=NEW Table(pool(), aorigin, &columns);
1.62 paf 556: }
1.63 paf 557:
1.64 paf 558: int exec_option_bits=0;
1.63 paf 559: while(true) {
560: int exec_substrings=pcre_exec(code, 0,
561: subject, length, startoffset,
1.64 paf 562: exec_option_bits, ovector, ovecsize);
1.63 paf 563:
564: if(exec_substrings==PCRE_ERROR_NOMATCH) {
1.100 parser 565: pcre_free(code);
566: row_action(**table, 0/*last time, no row*/, 0, 0, info);
1.63 paf 567: return option_bits[1]!=0; // global=true+table, not global=false
568: }
569:
570: if(exec_substrings<0) {
1.100 parser 571: pcre_free(code);
1.112 parser 572: throw Exception(0, 0,
1.63 paf 573: aorigin,
1.76 paf 574: "regular expression execute error (%d)",
1.63 paf 575: exec_substrings);
576: }
577:
578: Array& row=*NEW Array(pool());
1.81 paf 579: row+=&mid(0, ovector[0]); // .prematch column value
1.69 paf 580: row+=&mid(ovector[0], ovector[1]); // .match
1.81 paf 581: row+=&mid(ovector[1], size()); // .postmatch
1.63 paf 582:
583: for(int i=1; i<exec_substrings; i++) {
1.69 paf 584: // -1:-1 case handled peacefully by mid() itself
585: row+=&mid(ovector[i*2+0], ovector[i*2+1]); // .i column value
1.63 paf 586: }
587:
1.100 parser 588: row_action(**table, &row, startoffset, ovector[0], info);
1.63 paf 589:
1.100 parser 590: if(!option_bits[1] || startoffset==ovector[1]) { // not global | going to hang
591: pcre_free(code);
592: row_action(**table, 0/*last time, no row*/, 0, 0, info);
1.63 paf 593: return true;
594: }
1.100 parser 595: startoffset=ovector[1];
1.63 paf 596:
597: /*
598: if(option_bits[0] & PCRE_MULTILINE)
1.64 paf 599: exec_option_bits|=PCRE_NOTBOL; // start of subject+startoffset not BOL
1.63 paf 600: */
601: }
1.82 parser 602: }
603:
604: String& String::change_case(Pool& pool, const unsigned char *tables,
605: Change_case_kind kind) const {
606: String& result=*new(pool) String(pool);
607:
608: const unsigned char *a;
609: const unsigned char *b;
610: switch(kind) {
611: case CC_UPPER:
612: a=tables+lcc_offset;
613: b=tables+fcc_offset;
614: break;
615: case CC_LOWER:
616: a=tables+lcc_offset;
617: b=0;
618: break;
619: default:
1.112 parser 620: throw Exception(0, 0,
1.82 parser 621: this,
622: "unknown change case kind #%d",
623: static_cast<int>(kind)); // never
624: a=b=0; // calm, compiler
625: break; // never
626: }
627:
628: const Chunk *chunk=&head;
629: do {
630: const Chunk::Row *row=chunk->rows;
1.116 paf 631: for(uint i=0; i<chunk->count; i++, row++) {
1.82 parser 632: if(row==append_here)
633: goto break2;
634:
1.114 paf 635: char *new_cstr=(char *)pool.malloc(row->item.size, 12);
1.82 parser 636: char *dest=new_cstr;
637: const char *src=row->item.ptr;
638: for(int size=row->item.size; size--; src++) {
639: unsigned char c=a[(unsigned char)*src];
640: if(b)
641: c=b[c];
642:
643: *dest++=(char)c;
644: }
645:
646: result.APPEND(new_cstr, row->item.size,
1.123 paf 647: row->item.lang,
1.82 parser 648: row->item.origin.file, row->item.origin.line);
649: }
650: chunk=row->link;
651: } while(chunk);
652: break2:
1.89 parser 653:
1.101 parser 654: return result;
655: }
656:
1.108 parser 657: void String::join_chain(Pool& pool,
1.116 paf 658: uint& ai, const Chunk*& achunk, const Chunk::Row*& arow,
1.123 paf 659: uchar& joined_lang, const char *& joined_ptr, size_t& joined_size) const {
660: joined_lang=arow->item.lang;
1.108 parser 661:
662: // calc size
663: joined_size=0;
664: {
1.116 paf 665: uint start_i=ai;
1.108 parser 666: const Chunk::Row *start_row=arow;
667: const Chunk *chunk=achunk;
668: do {
669: const Chunk::Row *row=start_row;
1.116 paf 670: for(uint i=start_i; i<chunk->count; i++, row++) {
1.108 parser 671: if(row==append_here)
672: goto break21;
673:
674: if(row->item.lang==joined_lang)
675: joined_size+=row->item.size;
676: else
677: break;
678: }
679: if(chunk=row->link) {
680: start_i=0;
681: start_row=chunk->rows;
682: } else
683: break;
684: } while(true);
685: break21:;
686: }
687:
688: // if one row, return simply itself
689: if(joined_size==arow->item.size) {
690: joined_ptr=arow->item.ptr;
691: ai++; arow++;
692: if(ai==achunk->count)
693: achunk=arow->link;
694: } else {
695: // join adjacent rows
1.114 paf 696: char *ptr=(char *)pool.malloc(joined_size,13);
1.108 parser 697: joined_ptr=ptr;
1.116 paf 698: uint start_i=ai;
1.108 parser 699: const Chunk::Row *start_row=arow;
700: const Chunk *chunk=achunk;
1.116 paf 701: uint i;
1.108 parser 702: const Chunk::Row *row;
703: do {
704: row=start_row;
705: for(i=start_i; i<chunk->count; i++, row++) {
706: if(row==append_here)
707: goto break22;
708:
709: if(row->item.lang==joined_lang) {
710: memcpy(ptr, row->item.ptr, row->item.size);
711: ptr+=row->item.size;
712: } else
713: break;
714: }
715: if(chunk=row->link) {
716: start_i=0;
717: start_row=chunk->rows;
718: } else
719: break;
720: } while(true);
721: break22:;
722:
723: // return joined rows
724: ai=i;
725: arow=row;
726: achunk=chunk;
727: }
728: }
729:
730: String& String::reconstruct(Pool& pool) const {
731: //_asm int 3;
732: String& result=*new(pool) String(pool);
733: const Chunk *chunk=&head;
734: do {
735: const Chunk::Row *row=chunk->rows;
1.116 paf 736: for(uint i=0; i<chunk->count; ) {
1.108 parser 737: if(row==append_here)
738: goto break2;
739:
1.123 paf 740: uchar joined_lang;
1.109 parser 741: const char *joined_ptr;
1.108 parser 742: size_t joined_size;
743: join_chain(pool, i, chunk, row,
744: joined_lang, joined_ptr, joined_size);
745:
746: result.APPEND(joined_ptr, joined_size,
747: joined_lang,
748: row->item.origin.file, row->item.origin.line);
749: if(!chunk)
750: goto break2;
751: }
752: } while(true);
753: break2:
754:
755: return result;
756: };
757:
758: String& String::replace_in_reconstructed(Pool& pool, Dictionary& dict) const {
1.106 parser 759: //_asm int 3;
1.101 parser 760: String& result=*new(pool) String(pool);
1.123 paf 761: STRING_FOREACH_ROW(
762: const char *src=row->item.ptr;
763: size_t src_size=row->item.size;
764: char *new_cstr=(char *)pool.malloc((size_t)ceil(src_size*dict.max_ratio()), 14);
765: char *dest=new_cstr;
766: while(src_size) {
767: // there is a row where first column starts 'src'
768: if(Table::Item *item=dict.first_that_starts(src, src_size)) {
769: // get a=>b values
770: const String& a=*static_cast<Array *>(item)->get_string(0);
771: const String& b=*static_cast<Array *>(item)->get_string(1);
772: // skip 'a' in 'src' && reduce work size
773: src+=a.size(); src_size-=a.size();
774: // write 'b' to 'dest' && skip 'b' in 'dest'
775: b.store_to(dest); dest+=b.size();
776: } else {
777: // write a char to b && reduce work size
778: *dest++=*src++; src_size--;
1.101 parser 779: }
780: }
781:
1.123 paf 782: result.APPEND(new_cstr, dest-new_cstr,
783: row->item.lang,
784: row->item.origin.file, row->item.origin.line);
785: );
1.101 parser 786: break2:
1.89 parser 787: return result;
1.108 parser 788: }
789:
790: String& String::replace(Pool& pool, Dictionary& dict) const {
791: return reconstruct(pool).replace_in_reconstructed(pool, dict);
1.89 parser 792: }
793:
1.90 parser 794: double String::as_double() const {
1.89 parser 795: double result;
1.114 paf 796: const char *cstr;
797: char buf[MAX_NUMBER];
1.115 paf 798: if(head.rows+1==append_here) {
1.114 paf 799: int size=min(head.rows[0].item.size, MAX_NUMBER-1);
800: memcpy(buf, head.rows[0].item.ptr, size);
801: buf[size]=0;
802: cstr=buf;
803: } else
804: cstr=this->cstr();
1.102 parser 805: char *error_pos;
1.89 parser 806: // 0xABC
1.99 parser 807: if(cstr[0]=='0')
808: if(cstr[1]=='x' || cstr[1]=='X')
809: result=(double)(unsigned long)strtol(cstr, &error_pos, 0);
810: else
1.102 parser 811: result=(double)strtod(cstr+1/*skip leading 0*/, &error_pos);
1.89 parser 812: else
1.99 parser 813: result=(double)strtod(cstr, &error_pos);
1.89 parser 814:
1.103 parser 815: if(*error_pos/*not EOS*/)
1.112 parser 816: throw Exception(0, 0,
1.89 parser 817: this,
818: "invalid number (double)");
819:
820: return result;
821: }
1.90 parser 822: int String::as_int() const {
1.89 parser 823: int result;
1.114 paf 824: const char *cstr;
825: char buf[MAX_NUMBER];
1.115 paf 826: if(head.rows+1==append_here) {
1.114 paf 827: int size=min(head.rows[0].item.size, MAX_NUMBER-1);
828: memcpy(buf, head.rows[0].item.ptr, size);
829: buf[size]=0;
830: cstr=buf;
831: } else
832: cstr=this->cstr();
1.102 parser 833: char *error_pos;
1.89 parser 834: // 0xABC
1.99 parser 835: if(cstr[0]=='0')
836: if(cstr[1]=='x' || cstr[1]=='X')
837: result=(int)(unsigned long)strtol(cstr, &error_pos, 0);
838: else
1.102 parser 839: result=(int)strtol(cstr+1/*skip leading 0*/, &error_pos, 0);
1.89 parser 840: else
841: result=(int)strtol(cstr, &error_pos, 0);
842:
1.103 parser 843: if(*error_pos/*not EOS*/)
1.112 parser 844: throw Exception(0, 0,
1.89 parser 845: this,
846: "invalid number (int)");
1.82 parser 847:
848: return result;
1.61 paf 849: }
1.113 parser 850:
851: /* @todo maybe network order worth spending some effort?
852: don't bothering myself with network byte order,
853: am not planning to be able to move resulting file across platforms
854: for now
855: */
856: void String::serialize(size_t prolog_size, void *& buf, size_t& buf_size) const {
857: buf_size=
858: prolog_size
1.115 paf 859: +used_rows()*(sizeof(Untaint_lang)+sizeof(size_t))
1.113 parser 860: +size();
1.114 paf 861: buf=malloc(buf_size,15);
1.113 parser 862: char *cur=(char *)buf+prolog_size;
863:
1.123 paf 864: STRING_FOREACH_ROW(
865: // lang
866: memcpy(cur, &row->item.lang, sizeof(Untaint_lang));
867: cur+=sizeof(Untaint_lang);
868: // size
869: memcpy(cur, &row->item.size, sizeof(size_t));
870: cur+=sizeof(size_t);
871: // bytes
872: memcpy(cur, row->item.ptr, row->item.size);
873: cur+=row->item.size;
874: );
1.113 parser 875: break2:
876: ;
877: }
878:
879: /* @todo maybe network order worth spending some effort?
880: don't bothering myself with network byte order,
881: am not planning to be able to move resulting file across platforms
882: for now
883: */
884: #ifndef DOXYGEN
885: struct Serialized_piece {
886: String::Untaint_lang lang;
887: size_t size;
888: char ptr[1];
889: };
890: #endif
891:
892: void String::deserialize(size_t prolog_size, void *buf, size_t buf_size, const char *file) {
893: char *cur=((char *)buf)+prolog_size;
894: buf_size-=prolog_size;
895:
896: while(buf_size) {
897: Serialized_piece& p=*(Serialized_piece *)cur;
898: APPEND(p.ptr, p.size, p.lang, file, 0);
899:
900: size_t piece_size=sizeof(p.lang)+sizeof(p.size)+p.size;
901: cur+=piece_size;
902: buf_size-=piece_size;
903: }
904: }
905:
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