Annotation of parser3/src/main/pa_common.C, revision 1.63.4.1
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: */
1.63.4.1! parser 8: static const char *RCSId="$Id: pa_common.C,v 1.63 2001/08/28 09:39:30 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);
1.62 parser 57: //printf("file_read(%s)\n", fname);
1.33 paf 58: int f;
1.2 paf 59: struct stat finfo;
1.33 paf 60:
61: // first open, next stat:
1.45 paf 62: // directory update of NTFS hard links performed on open.
1.33 paf 63: // ex:
64: // a.html:^test[] and b.html hardlink to a.html
65: // user inserts ! before ^test in a.html
66: // directory entry of b.html in NTFS not updated at once,
1.35 paf 67: // they delay update till open, so we would receive "!^test[" string
68: // if would do stat, next open.
1.34 paf 69: if(
70: (f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 &&
71: stat(fname, &finfo)==0) {
1.2 paf 72: /*if(exclusive)
73: flock(f, LOCK_EX);*/
1.44 paf 74: size_t max_size=limit?min(offset+limit, finfo.st_size)-offset:finfo.st_size;
1.47 paf 75: if(!max_size) { // eof
76: data=0;
77: read_size=0;
1.59 parser 78: } else {
79: data=pool.malloc(max_size+(as_text?1:0));
80: if(offset)
81: lseek(f, offset, SEEK_SET);
82: read_size=read(f, data, max_size);
1.47 paf 83: }
1.2 paf 84: /*if(exclusive)
85: flock(f, LOCK_UN);*/
86: close(f);
1.59 parser 87: if(!max_size) // eof
88: return true;
1.32 paf 89:
1.44 paf 90: if(read_size>=0 && read_size<=max_size) {
1.34 paf 91: if(as_text)
1.46 paf 92: ((char*&)data)[read_size]=0;
1.34 paf 93: } else
1.33 paf 94: PTHROW(0, 0,
95: &file_spec,
1.44 paf 96: "read failed: actually read %d bytes count not in [0..%lu] valid range",
97: read_size, (unsigned long)max_size); //never
1.32 paf 98:
1.34 paf 99: return true;//prepare_config(result, remove_empty_lines);
1.2 paf 100: }
1.4 paf 101: if(fail_on_read_problem)
1.33 paf 102: PTHROW(0, 0,
103: &file_spec,
1.54 parser 104: "read failed: %s (%d), actual filename '%s'",
105: strerror(errno), errno, fname);
1.34 paf 106: return false;
1.8 paf 107: }
108:
1.63 parser 109: static void create_dir_for_file(const String& file_spec) {
110: size_t pos_after=1;
111: int pos_before;
112: while((pos_before=file_spec.pos("/", 1, pos_after))>=0) {
113: mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_NAME), 0775);
114: pos_after=pos_before+1;
115: }
116: }
117:
1.18 paf 118: void file_write(Pool& pool,
1.28 paf 119: const String& file_spec,
1.34 paf 120: const void *data, size_t size,
1.33 paf 121: bool as_text/*,
1.20 paf 122: bool exclusive*/) {
1.44 paf 123: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.28 paf 124: int f;
1.50 paf 125: if(access(fname, W_OK)!=0) {/*no*/
1.63 parser 126: create_dir_for_file(file_spec);
1.50 paf 127:
1.33 paf 128: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 129: close(f);
130: }
131: if(access(fname, R_OK|W_OK)==0) {
1.34 paf 132: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 133: #ifdef WIN32
1.28 paf 134: |O_TRUNC
1.18 paf 135: #endif
1.28 paf 136: ;
1.33 paf 137: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 138: /*if(exclusive)
139: flock(f, LOCK_EX);*/
140:
1.33 paf 141: if(size) write(f, data, size);
1.18 paf 142: #ifndef WIN32
1.33 paf 143: ftruncate(f, size);
1.18 paf 144: #endif
1.28 paf 145: /*if(exclusive)
146: flock(f, LOCK_UN);*/
147: close(f);
148: return;
1.18 paf 149: }
150: }
1.33 paf 151: PTHROW(0, 0,
152: &file_spec,
1.54 parser 153: "write failed: %s (%d), actual filename '%s'",
154: strerror(errno), errno, fname);
1.30 paf 155: }
156:
1.63 parser 157: // throws nothing! [this is required in file_move & file_delete]
1.50 paf 158: static void rmdir(const String& file_spec, size_t pos_after) {
159: int pos_before;
160: if((pos_before=file_spec.pos("/", 1, pos_after))>=0)
161: rmdir(file_spec, pos_before+1);
162:
163: rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_NAME));
164: }
1.30 paf 165: void file_delete(Pool& pool, const String& file_spec) {
1.54 parser 166: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
167: if(unlink(fname)!=0)
1.33 paf 168: PTHROW(0, 0,
169: &file_spec,
1.54 parser 170: "unlink failed: %s (%d), actual filename '%s'",
171: strerror(errno), errno, fname);
1.50 paf 172:
173: rmdir(file_spec, 1);
1.60 parser 174: }
175: void file_move(Pool& pool, const String& old_spec, const String& new_spec) {
176: const char *old_spec_cstr=old_spec.cstr(String::UL_FILE_NAME);
177: const char *new_spec_cstr=new_spec.cstr(String::UL_FILE_NAME);
1.63 parser 178:
179: create_dir_for_file(new_spec);
180:
1.60 parser 181: if(rename(old_spec_cstr, new_spec_cstr)!=0)
182: PTHROW(0, 0,
183: &old_spec,
184: "rename failed: %s (%d), actual filename '%s' to '%s'",
185: strerror(errno), errno, old_spec_cstr, new_spec_cstr);
1.63 parser 186:
187: rmdir(old_spec, 1);
1.31 paf 188: }
189:
1.51 paf 190:
191: static bool entry_readable(const String& file_spec, bool need_dir) {
192: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
193: struct stat finfo;
194: if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) {
195: bool is_dir=(bool)(finfo.st_mode&S_IFDIR);
196: return is_dir==need_dir;
197: }
198: return false;
199: }
1.31 paf 200: bool file_readable(const String& file_spec) {
1.51 paf 201: return entry_readable(file_spec, false);
202: }
203: bool dir_readable(const String& file_spec) {
204: return entry_readable(file_spec, true);
1.63.4.1! parser 205: }
! 206: String *file_readable(const String& path, const String& name) {
! 207: String *result=new(path.pool()) String(path);
! 208: *result << "/";
! 209: *result << name;
! 210: return file_readable(*result)?result:0;
1.43 paf 211: }
212: bool file_executable(const String& file_spec) {
213: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 paf 214: }
215:
1.58 parser 216: void file_stat(const String& file_spec,
217: size_t& rsize,
218: time_t& ratime,
219: time_t& rmtime,
220: time_t& rctime) {
1.44 paf 221: Pool& pool=file_spec.pool();
222: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
223: struct stat finfo;
224: if(stat(fname, &finfo)!=0)
225: PTHROW(0, 0,
226: &file_spec,
1.54 parser 227: "getting file size failed: %s (%d), real filename '%s'",
228: strerror(errno), errno, fname);
1.58 parser 229: rsize=finfo.st_size;
230: ratime=finfo.st_atime;
231: rmtime=finfo.st_mtime;
232: rctime=finfo.st_ctime;
1.18 paf 233: }
234:
1.8 paf 235: char *getrow(char **row_ref, char delim) {
236: char *result=*row_ref;
237: if(result) {
238: *row_ref=strchr(result, delim);
239: if(*row_ref)
240: *((*row_ref)++)=0;
241: else if(!*result)
242: return 0;
243: }
244: return result;
245: }
246:
1.23 paf 247: char *lsplit(char *string, char delim) {
248: if(string) {
249: char *v=strchr(string, delim);
1.8 paf 250: if(v) {
251: *v=0;
252: return v+1;
253: }
254: }
255: return 0;
256: }
257:
258: char *lsplit(char **string_ref, char delim) {
259: char *result=*string_ref;
260: char *next=lsplit(*string_ref, delim);
261: *string_ref=next;
262: return result;
1.9 paf 263: }
264:
265: char *rsplit(char *string, char delim) {
1.18 paf 266: if(string) {
1.9 paf 267: char *v=strrchr(string, delim);
1.18 paf 268: if(v) {
1.9 paf 269: *v=0;
270: return v+1;
271: }
272: }
273: return NULL;
1.10 paf 274: }
275:
1.37 paf 276: /// @todo less stupid type detection
1.10 paf 277: char *format(Pool& pool, double value, char *fmt) {
278: char *result=(char *)pool.malloc(MAX_NUMBER);
279: if(fmt)
280: if(strpbrk(fmt, "diouxX"))
281: if(strpbrk(fmt, "ouxX"))
1.33 paf 282: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 283: else
1.33 paf 284: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 285: else
286: snprintf(result, MAX_NUMBER, fmt, value);
287: else
1.33 paf 288: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 289:
290: return result;
1.12 paf 291: }
292:
1.36 paf 293: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 294: #ifdef WIN32
295: do{
296: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
297: if(chunk_written<=0)
298: break;
299: size-=chunk_written;
1.36 paf 300: buf=((const char*)buf)+chunk_written;
1.12 paf 301: } while(size>0);
302:
303: return size;
304: #else
1.13 paf 305: return fwrite(buf, 1, size, stdout);
1.12 paf 306: #endif
1.2 paf 307: }
1.14 paf 308:
309: const char *unescape_chars(Pool& pool, const char *cp, int len) {
310: char *s=(char *)pool.malloc(len + 1);
311: enum EscapeState {
1.33 paf 312: EscapeRest,
313: EscapeFirst,
1.14 paf 314: EscapeSecond
315: } escapeState=EscapeRest;
316: int escapedValue=0;
317: int srcPos=0;
318: int dstPos=0;
319: while(srcPos < len) {
320: int ch=cp[srcPos];
321: switch(escapeState) {
322: case EscapeRest:
323: if(ch=='%') {
324: escapeState=EscapeFirst;
325: } else if(ch=='+') {
326: s[dstPos++]=' ';
327: } else {
328: s[dstPos++]=ch;
329: }
330: break;
331: case EscapeFirst:
332: escapedValue=hex_value[ch] << 4;
333: escapeState=EscapeSecond;
334: break;
335: case EscapeSecond:
336: escapedValue +=hex_value[ch];
337: s[dstPos++]=escapedValue;
338: escapeState=EscapeRest;
339: break;
340: }
341: srcPos++;
342: }
343: s[dstPos]=0;
344: return s;
345: }
346:
1.52 paf 347: /// used by attributed_meaning_to_string / append_attribute_subattribute
1.40 paf 348: struct Attributed_meaning_info {
1.52 paf 349: String *header; // header line being constructed
350: String::Untaint_lang lang; // language in which to append to that line
1.40 paf 351: };
1.17 paf 352: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 353: void *info) {
354: if(akey==VALUE_NAME)
355: return;
356:
1.40 paf 357: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
358:
1.14 paf 359: // ...; charset=windows1251
1.48 paf 360: *ami.header << "; ";
1.40 paf 361: ami.header->append(akey, ami.lang, true);
1.48 paf 362: *ami.header << "=";
363: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true);
1.14 paf 364: }
1.49 paf 365: const String& attributed_meaning_to_string(Value& meaning,
366: String::Untaint_lang lang) {
1.20 paf 367: String &result=*new(meaning.pool()) String(meaning.pool());
368: if(Hash *hash=meaning.get_hash()) {
1.14 paf 369: // $value(value) $subattribute(subattribute value)
370: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 371: result.append(value->as_string(), lang, true);
1.14 paf 372:
1.40 paf 373: Attributed_meaning_info attributed_meaning_info={
1.52 paf 374: &result,
375: lang
1.40 paf 376: };
377: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 378: } else // result value
1.40 paf 379: result.append(meaning.as_string(), lang, true);
1.14 paf 380:
381: return result;
1.24 paf 382: }
383:
384: #ifdef WIN32
385: void back_slashes_to_slashes(char *s) {
386: if(s)
387: for(; *s; s++)
388: if(*s=='\\')
389: *s='/';
390: }
1.42 paf 391: /*
392: void slashes_to_back_slashes(char *s) {
393: if(s)
394: for(; *s; s++)
395: if(*s=='/')
396: *s='\\';
397: }
398: */
1.24 paf 399: #endif
1.41 paf 400:
401: bool StrEqNc(const char *s1, const char *s2, bool strict) {
402: while(true) {
403: if(!(*s1)) {
404: if(!(*s2))
405: return true;
406: else
407: return !strict;
408: } else if(!(*s2))
409: return !strict;
410: if(isalpha(*s1)) {
411: if(tolower(*s1) !=tolower(*s2))
412: return false;
413: } else if((*s1) !=(*s2))
414: return false;
415: s1++;
416: s2++;
417: }
1.48 paf 418: }
419:
420: char *unquote(char*& current, char stop_at) {
421: char *result=current;
422: char *dest=current;
423: // skip leading WS
424: while(*current==' ' || *current=='\t')
425: current++;
426: if(!*current)
427: return current=0;
428:
429: bool quoted=*current=='"';
430: if(quoted)
431: current++;
432:
433: for(; *current; ) {
434: if(quoted)
435: switch(*current) {
436: case '\\': // "...\c
437: if(current[1])
438: current++;
439: break;
440: case '"':
441: current++;
442: goto break2;
443: }
444: else
445: if(*current==stop_at)
446: break;
447:
448: *dest++=*current++;
449: }
450: break2:
451: if(*current)
452: current++; // skip 'stop_at'
453: *dest=0;
454: return result;
1.57 parser 455: }
456:
457: static int isLeap(int year) {
458: return !(
459: (year % 4) || ((year % 400) && !(year % 100))
460: );
461: }
462:
463: int getMonthDays(int year, int month) {
464: int monthDays[]={
465: 31,
466: isLeap(year) ? 29 : 28,
467: 31,
468: 30,
469: 31,
470: 30,
471: 31,
472: 31,
473: 30,
474: 31,
475: 30,
476: 31
477: };
478: return monthDays[month];
1.41 paf 479: }
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