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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)
1.16 paf 5:
1.8 paf 6: Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)
1.1 paf 7: */
1.59 ! parser 8: static const char *RCSId="$Id: pa_common.C,v 1.58 2001/07/11 15:02:09 parser Exp $";
1.1 paf 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:
1.47 paf 19: #ifndef WIN32
20: # ifndef _O_TEXT
21: # define _O_TEXT 0
22: # endif
23: # ifndef _O_BINARY
24: # define _O_BINARY 0
25: # endif
26: #endif
27:
1.22 paf 28: #if _MSC_VER
1.1 paf 29:
30: int __vsnprintf(char *b, size_t s, const char *f, va_list l) {
31: int r=_vsnprintf(b, --s, f, l);
32: b[s]=0;
33: return r;
34: }
35: int __snprintf(char *b, size_t s, const char *f, ...) {
36: va_list l;
37: va_start(l, f);
38: int r=__vsnprintf(b, s, f, l);
39: va_end(l);
40: return r;
41: }
42:
43: #endif
1.2 paf 44:
1.18 paf 45:
1.28 paf 46: char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) {
1.34 paf 47: void *result;
48: size_t size;
1.35 paf 49: return file_read(pool, file_spec, result, size, true,
50: fail_on_read_problem)?(char *)result:0;
1.34 paf 51: }
52: bool file_read(Pool& pool, const String& file_spec,
1.44 paf 53: void*& data, size_t& read_size, bool as_text,
54: bool fail_on_read_problem,
55: size_t offset, size_t limit) {
56: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.33 paf 57: int f;
1.2 paf 58: struct stat finfo;
1.33 paf 59:
60: // first open, next stat:
1.45 paf 61: // directory update of NTFS hard links performed on open.
1.33 paf 62: // ex:
63: // a.html:^test[] and b.html hardlink to a.html
64: // user inserts ! before ^test in a.html
65: // directory entry of b.html in NTFS not updated at once,
1.35 paf 66: // they delay update till open, so we would receive "!^test[" string
67: // if would do stat, next open.
1.34 paf 68: if(
69: (f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 &&
70: stat(fname, &finfo)==0) {
1.2 paf 71: /*if(exclusive)
72: flock(f, LOCK_EX);*/
1.44 paf 73: size_t max_size=limit?min(offset+limit, finfo.st_size)-offset:finfo.st_size;
1.47 paf 74: if(!max_size) { // eof
75: data=0;
76: read_size=0;
1.59 ! parser 77: } else {
! 78: data=pool.malloc(max_size+(as_text?1:0));
! 79: if(offset)
! 80: lseek(f, offset, SEEK_SET);
! 81: read_size=read(f, data, max_size);
1.47 paf 82: }
1.2 paf 83: /*if(exclusive)
84: flock(f, LOCK_UN);*/
85: close(f);
1.59 ! parser 86: if(!max_size) // eof
! 87: return true;
1.32 paf 88:
1.44 paf 89: if(read_size>=0 && read_size<=max_size) {
1.34 paf 90: if(as_text)
1.46 paf 91: ((char*&)data)[read_size]=0;
1.34 paf 92: } else
1.33 paf 93: PTHROW(0, 0,
94: &file_spec,
1.44 paf 95: "read failed: actually read %d bytes count not in [0..%lu] valid range",
96: read_size, (unsigned long)max_size); //never
1.32 paf 97:
1.34 paf 98: return true;//prepare_config(result, remove_empty_lines);
1.2 paf 99: }
1.4 paf 100: if(fail_on_read_problem)
1.33 paf 101: PTHROW(0, 0,
102: &file_spec,
1.54 parser 103: "read failed: %s (%d), actual filename '%s'",
104: strerror(errno), errno, fname);
1.34 paf 105: return false;
1.8 paf 106: }
107:
1.18 paf 108: void file_write(Pool& pool,
1.28 paf 109: const String& file_spec,
1.34 paf 110: const void *data, size_t size,
1.33 paf 111: bool as_text/*,
1.20 paf 112: bool exclusive*/) {
1.44 paf 113: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.28 paf 114: int f;
1.50 paf 115: if(access(fname, W_OK)!=0) {/*no*/
116: size_t pos_after=1;
117: int pos_before;
118: while((pos_before=file_spec.pos("/", 1, pos_after))>=0) {
119: mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_NAME), 0775);
120: pos_after=pos_before+1;
121: }
122:
1.33 paf 123: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 124: close(f);
125: }
126: if(access(fname, R_OK|W_OK)==0) {
1.34 paf 127: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 128: #ifdef WIN32
1.28 paf 129: |O_TRUNC
1.18 paf 130: #endif
1.28 paf 131: ;
1.33 paf 132: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 133: /*if(exclusive)
134: flock(f, LOCK_EX);*/
135:
1.33 paf 136: if(size) write(f, data, size);
1.18 paf 137: #ifndef WIN32
1.33 paf 138: ftruncate(f, size);
1.18 paf 139: #endif
1.28 paf 140: /*if(exclusive)
141: flock(f, LOCK_UN);*/
142: close(f);
143: return;
1.18 paf 144: }
145: }
1.33 paf 146: PTHROW(0, 0,
147: &file_spec,
1.54 parser 148: "write failed: %s (%d), actual filename '%s'",
149: strerror(errno), errno, fname);
1.30 paf 150: }
151:
1.50 paf 152: static void rmdir(const String& file_spec, size_t pos_after) {
153: int pos_before;
154: if((pos_before=file_spec.pos("/", 1, pos_after))>=0)
155: rmdir(file_spec, pos_before+1);
156:
157: rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_NAME));
158: }
1.30 paf 159: void file_delete(Pool& pool, const String& file_spec) {
1.54 parser 160: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
161: if(unlink(fname)!=0)
1.33 paf 162: PTHROW(0, 0,
163: &file_spec,
1.54 parser 164: "unlink failed: %s (%d), actual filename '%s'",
165: strerror(errno), errno, fname);
1.50 paf 166:
167: rmdir(file_spec, 1);
1.31 paf 168: }
169:
1.51 paf 170:
171: static bool entry_readable(const String& file_spec, bool need_dir) {
172: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
173: struct stat finfo;
174: if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) {
175: bool is_dir=(bool)(finfo.st_mode&S_IFDIR);
176: return is_dir==need_dir;
177: }
178: return false;
179: }
1.31 paf 180: bool file_readable(const String& file_spec) {
1.51 paf 181: return entry_readable(file_spec, false);
182: }
183: bool dir_readable(const String& file_spec) {
184: return entry_readable(file_spec, true);
1.43 paf 185: }
186: bool file_executable(const String& file_spec) {
187: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 paf 188: }
189:
1.58 parser 190: void file_stat(const String& file_spec,
191: size_t& rsize,
192: time_t& ratime,
193: time_t& rmtime,
194: time_t& rctime) {
1.44 paf 195: Pool& pool=file_spec.pool();
196: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
197: struct stat finfo;
198: if(stat(fname, &finfo)!=0)
199: PTHROW(0, 0,
200: &file_spec,
1.54 parser 201: "getting file size failed: %s (%d), real filename '%s'",
202: strerror(errno), errno, fname);
1.58 parser 203: rsize=finfo.st_size;
204: ratime=finfo.st_atime;
205: rmtime=finfo.st_mtime;
206: rctime=finfo.st_ctime;
1.18 paf 207: }
208:
1.8 paf 209: char *getrow(char **row_ref, char delim) {
210: char *result=*row_ref;
211: if(result) {
212: *row_ref=strchr(result, delim);
213: if(*row_ref)
214: *((*row_ref)++)=0;
215: else if(!*result)
216: return 0;
217: }
218: return result;
219: }
220:
1.23 paf 221: char *lsplit(char *string, char delim) {
222: if(string) {
223: char *v=strchr(string, delim);
1.8 paf 224: if(v) {
225: *v=0;
226: return v+1;
227: }
228: }
229: return 0;
230: }
231:
232: char *lsplit(char **string_ref, char delim) {
233: char *result=*string_ref;
234: char *next=lsplit(*string_ref, delim);
235: *string_ref=next;
236: return result;
1.9 paf 237: }
238:
239: char *rsplit(char *string, char delim) {
1.18 paf 240: if(string) {
1.9 paf 241: char *v=strrchr(string, delim);
1.18 paf 242: if(v) {
1.9 paf 243: *v=0;
244: return v+1;
245: }
246: }
247: return NULL;
1.10 paf 248: }
249:
1.37 paf 250: /// @todo less stupid type detection
1.10 paf 251: char *format(Pool& pool, double value, char *fmt) {
252: char *result=(char *)pool.malloc(MAX_NUMBER);
253: if(fmt)
254: if(strpbrk(fmt, "diouxX"))
255: if(strpbrk(fmt, "ouxX"))
1.33 paf 256: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 257: else
1.33 paf 258: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 259: else
260: snprintf(result, MAX_NUMBER, fmt, value);
261: else
1.33 paf 262: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 263:
264: return result;
1.12 paf 265: }
266:
1.36 paf 267: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 268: #ifdef WIN32
269: do{
270: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
271: if(chunk_written<=0)
272: break;
273: size-=chunk_written;
1.36 paf 274: buf=((const char*)buf)+chunk_written;
1.12 paf 275: } while(size>0);
276:
277: return size;
278: #else
1.13 paf 279: return fwrite(buf, 1, size, stdout);
1.12 paf 280: #endif
1.2 paf 281: }
1.14 paf 282:
283: const char *unescape_chars(Pool& pool, const char *cp, int len) {
284: char *s=(char *)pool.malloc(len + 1);
285: enum EscapeState {
1.33 paf 286: EscapeRest,
287: EscapeFirst,
1.14 paf 288: EscapeSecond
289: } escapeState=EscapeRest;
290: int escapedValue=0;
291: int srcPos=0;
292: int dstPos=0;
293: while(srcPos < len) {
294: int ch=cp[srcPos];
295: switch(escapeState) {
296: case EscapeRest:
297: if(ch=='%') {
298: escapeState=EscapeFirst;
299: } else if(ch=='+') {
300: s[dstPos++]=' ';
301: } else {
302: s[dstPos++]=ch;
303: }
304: break;
305: case EscapeFirst:
306: escapedValue=hex_value[ch] << 4;
307: escapeState=EscapeSecond;
308: break;
309: case EscapeSecond:
310: escapedValue +=hex_value[ch];
311: s[dstPos++]=escapedValue;
312: escapeState=EscapeRest;
313: break;
314: }
315: srcPos++;
316: }
317: s[dstPos]=0;
318: return s;
319: }
320:
1.52 paf 321: /// used by attributed_meaning_to_string / append_attribute_subattribute
1.40 paf 322: struct Attributed_meaning_info {
1.52 paf 323: String *header; // header line being constructed
324: String::Untaint_lang lang; // language in which to append to that line
1.40 paf 325: };
1.17 paf 326: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 327: void *info) {
328: if(akey==VALUE_NAME)
329: return;
330:
1.40 paf 331: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
332:
1.14 paf 333: // ...; charset=windows1251
1.48 paf 334: *ami.header << "; ";
1.40 paf 335: ami.header->append(akey, ami.lang, true);
1.48 paf 336: *ami.header << "=";
337: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true);
1.14 paf 338: }
1.49 paf 339: const String& attributed_meaning_to_string(Value& meaning,
340: String::Untaint_lang lang) {
1.20 paf 341: String &result=*new(meaning.pool()) String(meaning.pool());
342: if(Hash *hash=meaning.get_hash()) {
1.14 paf 343: // $value(value) $subattribute(subattribute value)
344: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 345: result.append(value->as_string(), lang, true);
1.14 paf 346:
1.40 paf 347: Attributed_meaning_info attributed_meaning_info={
1.52 paf 348: &result,
349: lang
1.40 paf 350: };
351: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 352: } else // result value
1.40 paf 353: result.append(meaning.as_string(), lang, true);
1.14 paf 354:
355: return result;
1.24 paf 356: }
357:
358: #ifdef WIN32
359: void back_slashes_to_slashes(char *s) {
360: if(s)
361: for(; *s; s++)
362: if(*s=='\\')
363: *s='/';
364: }
1.42 paf 365: /*
366: void slashes_to_back_slashes(char *s) {
367: if(s)
368: for(; *s; s++)
369: if(*s=='/')
370: *s='\\';
371: }
372: */
1.24 paf 373: #endif
1.41 paf 374:
375: bool StrEqNc(const char *s1, const char *s2, bool strict) {
376: while(true) {
377: if(!(*s1)) {
378: if(!(*s2))
379: return true;
380: else
381: return !strict;
382: } else if(!(*s2))
383: return !strict;
384: if(isalpha(*s1)) {
385: if(tolower(*s1) !=tolower(*s2))
386: return false;
387: } else if((*s1) !=(*s2))
388: return false;
389: s1++;
390: s2++;
391: }
1.48 paf 392: }
393:
394: char *unquote(char*& current, char stop_at) {
395: char *result=current;
396: char *dest=current;
397: // skip leading WS
398: while(*current==' ' || *current=='\t')
399: current++;
400: if(!*current)
401: return current=0;
402:
403: bool quoted=*current=='"';
404: if(quoted)
405: current++;
406:
407: for(; *current; ) {
408: if(quoted)
409: switch(*current) {
410: case '\\': // "...\c
411: if(current[1])
412: current++;
413: break;
414: case '"':
415: current++;
416: goto break2;
417: }
418: else
419: if(*current==stop_at)
420: break;
421:
422: *dest++=*current++;
423: }
424: break2:
425: if(*current)
426: current++; // skip 'stop_at'
427: *dest=0;
428: return result;
1.57 parser 429: }
430:
431: static int isLeap(int year) {
432: return !(
433: (year % 4) || ((year % 400) && !(year % 100))
434: );
435: }
436:
437: int getMonthDays(int year, int month) {
438: int monthDays[]={
439: 31,
440: isLeap(year) ? 29 : 28,
441: 31,
442: 30,
443: 31,
444: 30,
445: 31,
446: 31,
447: 30,
448: 31,
449: 30,
450: 31
451: };
452: return monthDays[month];
1.41 paf 453: }