Annotation of parser3/src/main/pa_common.C, revision 1.60
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: */
1.60 ! parser 8: static const char *RCSId="$Id: pa_common.C,v 1.59 2001/07/24 08:37:18 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);
1.60 ! parser 168: }
! 169: void file_move(Pool& pool, const String& old_spec, const String& new_spec) {
! 170: const char *old_spec_cstr=old_spec.cstr(String::UL_FILE_NAME);
! 171: const char *new_spec_cstr=new_spec.cstr(String::UL_FILE_NAME);
! 172: if(rename(old_spec_cstr, new_spec_cstr)!=0)
! 173: PTHROW(0, 0,
! 174: &old_spec,
! 175: "rename failed: %s (%d), actual filename '%s' to '%s'",
! 176: strerror(errno), errno, old_spec_cstr, new_spec_cstr);
1.31 paf 177: }
178:
1.51 paf 179:
180: static bool entry_readable(const String& file_spec, bool need_dir) {
181: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
182: struct stat finfo;
183: if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) {
184: bool is_dir=(bool)(finfo.st_mode&S_IFDIR);
185: return is_dir==need_dir;
186: }
187: return false;
188: }
1.31 paf 189: bool file_readable(const String& file_spec) {
1.51 paf 190: return entry_readable(file_spec, false);
191: }
192: bool dir_readable(const String& file_spec) {
193: return entry_readable(file_spec, true);
1.43 paf 194: }
195: bool file_executable(const String& file_spec) {
196: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 paf 197: }
198:
1.58 parser 199: void file_stat(const String& file_spec,
200: size_t& rsize,
201: time_t& ratime,
202: time_t& rmtime,
203: time_t& rctime) {
1.44 paf 204: Pool& pool=file_spec.pool();
205: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
206: struct stat finfo;
207: if(stat(fname, &finfo)!=0)
208: PTHROW(0, 0,
209: &file_spec,
1.54 parser 210: "getting file size failed: %s (%d), real filename '%s'",
211: strerror(errno), errno, fname);
1.58 parser 212: rsize=finfo.st_size;
213: ratime=finfo.st_atime;
214: rmtime=finfo.st_mtime;
215: rctime=finfo.st_ctime;
1.18 paf 216: }
217:
1.8 paf 218: char *getrow(char **row_ref, char delim) {
219: char *result=*row_ref;
220: if(result) {
221: *row_ref=strchr(result, delim);
222: if(*row_ref)
223: *((*row_ref)++)=0;
224: else if(!*result)
225: return 0;
226: }
227: return result;
228: }
229:
1.23 paf 230: char *lsplit(char *string, char delim) {
231: if(string) {
232: char *v=strchr(string, delim);
1.8 paf 233: if(v) {
234: *v=0;
235: return v+1;
236: }
237: }
238: return 0;
239: }
240:
241: char *lsplit(char **string_ref, char delim) {
242: char *result=*string_ref;
243: char *next=lsplit(*string_ref, delim);
244: *string_ref=next;
245: return result;
1.9 paf 246: }
247:
248: char *rsplit(char *string, char delim) {
1.18 paf 249: if(string) {
1.9 paf 250: char *v=strrchr(string, delim);
1.18 paf 251: if(v) {
1.9 paf 252: *v=0;
253: return v+1;
254: }
255: }
256: return NULL;
1.10 paf 257: }
258:
1.37 paf 259: /// @todo less stupid type detection
1.10 paf 260: char *format(Pool& pool, double value, char *fmt) {
261: char *result=(char *)pool.malloc(MAX_NUMBER);
262: if(fmt)
263: if(strpbrk(fmt, "diouxX"))
264: if(strpbrk(fmt, "ouxX"))
1.33 paf 265: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 266: else
1.33 paf 267: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 268: else
269: snprintf(result, MAX_NUMBER, fmt, value);
270: else
1.33 paf 271: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 272:
273: return result;
1.12 paf 274: }
275:
1.36 paf 276: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 277: #ifdef WIN32
278: do{
279: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
280: if(chunk_written<=0)
281: break;
282: size-=chunk_written;
1.36 paf 283: buf=((const char*)buf)+chunk_written;
1.12 paf 284: } while(size>0);
285:
286: return size;
287: #else
1.13 paf 288: return fwrite(buf, 1, size, stdout);
1.12 paf 289: #endif
1.2 paf 290: }
1.14 paf 291:
292: const char *unescape_chars(Pool& pool, const char *cp, int len) {
293: char *s=(char *)pool.malloc(len + 1);
294: enum EscapeState {
1.33 paf 295: EscapeRest,
296: EscapeFirst,
1.14 paf 297: EscapeSecond
298: } escapeState=EscapeRest;
299: int escapedValue=0;
300: int srcPos=0;
301: int dstPos=0;
302: while(srcPos < len) {
303: int ch=cp[srcPos];
304: switch(escapeState) {
305: case EscapeRest:
306: if(ch=='%') {
307: escapeState=EscapeFirst;
308: } else if(ch=='+') {
309: s[dstPos++]=' ';
310: } else {
311: s[dstPos++]=ch;
312: }
313: break;
314: case EscapeFirst:
315: escapedValue=hex_value[ch] << 4;
316: escapeState=EscapeSecond;
317: break;
318: case EscapeSecond:
319: escapedValue +=hex_value[ch];
320: s[dstPos++]=escapedValue;
321: escapeState=EscapeRest;
322: break;
323: }
324: srcPos++;
325: }
326: s[dstPos]=0;
327: return s;
328: }
329:
1.52 paf 330: /// used by attributed_meaning_to_string / append_attribute_subattribute
1.40 paf 331: struct Attributed_meaning_info {
1.52 paf 332: String *header; // header line being constructed
333: String::Untaint_lang lang; // language in which to append to that line
1.40 paf 334: };
1.17 paf 335: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 336: void *info) {
337: if(akey==VALUE_NAME)
338: return;
339:
1.40 paf 340: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
341:
1.14 paf 342: // ...; charset=windows1251
1.48 paf 343: *ami.header << "; ";
1.40 paf 344: ami.header->append(akey, ami.lang, true);
1.48 paf 345: *ami.header << "=";
346: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true);
1.14 paf 347: }
1.49 paf 348: const String& attributed_meaning_to_string(Value& meaning,
349: String::Untaint_lang lang) {
1.20 paf 350: String &result=*new(meaning.pool()) String(meaning.pool());
351: if(Hash *hash=meaning.get_hash()) {
1.14 paf 352: // $value(value) $subattribute(subattribute value)
353: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 354: result.append(value->as_string(), lang, true);
1.14 paf 355:
1.40 paf 356: Attributed_meaning_info attributed_meaning_info={
1.52 paf 357: &result,
358: lang
1.40 paf 359: };
360: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 361: } else // result value
1.40 paf 362: result.append(meaning.as_string(), lang, true);
1.14 paf 363:
364: return result;
1.24 paf 365: }
366:
367: #ifdef WIN32
368: void back_slashes_to_slashes(char *s) {
369: if(s)
370: for(; *s; s++)
371: if(*s=='\\')
372: *s='/';
373: }
1.42 paf 374: /*
375: void slashes_to_back_slashes(char *s) {
376: if(s)
377: for(; *s; s++)
378: if(*s=='/')
379: *s='\\';
380: }
381: */
1.24 paf 382: #endif
1.41 paf 383:
384: bool StrEqNc(const char *s1, const char *s2, bool strict) {
385: while(true) {
386: if(!(*s1)) {
387: if(!(*s2))
388: return true;
389: else
390: return !strict;
391: } else if(!(*s2))
392: return !strict;
393: if(isalpha(*s1)) {
394: if(tolower(*s1) !=tolower(*s2))
395: return false;
396: } else if((*s1) !=(*s2))
397: return false;
398: s1++;
399: s2++;
400: }
1.48 paf 401: }
402:
403: char *unquote(char*& current, char stop_at) {
404: char *result=current;
405: char *dest=current;
406: // skip leading WS
407: while(*current==' ' || *current=='\t')
408: current++;
409: if(!*current)
410: return current=0;
411:
412: bool quoted=*current=='"';
413: if(quoted)
414: current++;
415:
416: for(; *current; ) {
417: if(quoted)
418: switch(*current) {
419: case '\\': // "...\c
420: if(current[1])
421: current++;
422: break;
423: case '"':
424: current++;
425: goto break2;
426: }
427: else
428: if(*current==stop_at)
429: break;
430:
431: *dest++=*current++;
432: }
433: break2:
434: if(*current)
435: current++; // skip 'stop_at'
436: *dest=0;
437: return result;
1.57 parser 438: }
439:
440: static int isLeap(int year) {
441: return !(
442: (year % 4) || ((year % 400) && !(year % 100))
443: );
444: }
445:
446: int getMonthDays(int year, int month) {
447: int monthDays[]={
448: 31,
449: isLeap(year) ? 29 : 28,
450: 31,
451: 30,
452: 31,
453: 30,
454: 31,
455: 31,
456: 30,
457: 31,
458: 30,
459: 31
460: };
461: return monthDays[month];
1.41 paf 462: }
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