Annotation of parser3/src/main/pa_common.C, revision 1.65
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: */
1.65 ! parser 8: static const char *RCSId="$Id: pa_common.C,v 1.63.4.1 2001/09/13 08:31:20 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) {
1.64 parser 56: const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
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) {
1.64 parser 113: mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_SPEC), 0775);
1.63 parser 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*/) {
1.64 parser 123: const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
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:
1.64 parser 163: rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_SPEC));
1.50 paf 164: }
1.30 paf 165: void file_delete(Pool& pool, const String& file_spec) {
1.64 parser 166: const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
1.54 parser 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) {
1.64 parser 176: const char *old_spec_cstr=old_spec.cstr(String::UL_FILE_SPEC);
177: const char *new_spec_cstr=new_spec.cstr(String::UL_FILE_SPEC);
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) {
1.64 parser 192: const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
1.51 paf 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);
1.65 ! 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) {
1.64 parser 213: return access(file_spec.cstr(String::UL_FILE_SPEC), X_OK)==0;
1.44 paf 214: }
215:
1.64 parser 216: bool file_stat(const String& file_spec,
1.58 parser 217: size_t& rsize,
218: time_t& ratime,
219: time_t& rmtime,
1.64 parser 220: time_t& rctime,
221: bool fail_on_read_problem) {
1.44 paf 222: Pool& pool=file_spec.pool();
1.64 parser 223: const char *fname=file_spec.cstr(String::UL_FILE_SPEC);
1.44 paf 224: struct stat finfo;
225: if(stat(fname, &finfo)!=0)
1.64 parser 226: if(fail_on_read_problem)
227: PTHROW(0, 0,
228: &file_spec,
229: "getting file size failed: %s (%d), real filename '%s'",
230: strerror(errno), errno, fname);
231: else
232: return false;
1.58 parser 233: rsize=finfo.st_size;
234: ratime=finfo.st_atime;
235: rmtime=finfo.st_mtime;
236: rctime=finfo.st_ctime;
1.64 parser 237: return true;
1.18 paf 238: }
239:
1.8 paf 240: char *getrow(char **row_ref, char delim) {
241: char *result=*row_ref;
242: if(result) {
243: *row_ref=strchr(result, delim);
244: if(*row_ref)
245: *((*row_ref)++)=0;
246: else if(!*result)
247: return 0;
248: }
249: return result;
250: }
251:
1.23 paf 252: char *lsplit(char *string, char delim) {
253: if(string) {
254: char *v=strchr(string, delim);
1.8 paf 255: if(v) {
256: *v=0;
257: return v+1;
258: }
259: }
260: return 0;
261: }
262:
263: char *lsplit(char **string_ref, char delim) {
264: char *result=*string_ref;
265: char *next=lsplit(*string_ref, delim);
266: *string_ref=next;
267: return result;
1.9 paf 268: }
269:
270: char *rsplit(char *string, char delim) {
1.18 paf 271: if(string) {
1.9 paf 272: char *v=strrchr(string, delim);
1.18 paf 273: if(v) {
1.9 paf 274: *v=0;
275: return v+1;
276: }
277: }
278: return NULL;
1.10 paf 279: }
280:
1.37 paf 281: /// @todo less stupid type detection
1.10 paf 282: char *format(Pool& pool, double value, char *fmt) {
283: char *result=(char *)pool.malloc(MAX_NUMBER);
284: if(fmt)
285: if(strpbrk(fmt, "diouxX"))
286: if(strpbrk(fmt, "ouxX"))
1.33 paf 287: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 288: else
1.33 paf 289: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 290: else
291: snprintf(result, MAX_NUMBER, fmt, value);
292: else
1.33 paf 293: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 294:
295: return result;
1.12 paf 296: }
297:
1.36 paf 298: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 299: #ifdef WIN32
300: do{
301: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
302: if(chunk_written<=0)
303: break;
304: size-=chunk_written;
1.36 paf 305: buf=((const char*)buf)+chunk_written;
1.12 paf 306: } while(size>0);
307:
308: return size;
309: #else
1.13 paf 310: return fwrite(buf, 1, size, stdout);
1.12 paf 311: #endif
1.2 paf 312: }
1.14 paf 313:
314: const char *unescape_chars(Pool& pool, const char *cp, int len) {
315: char *s=(char *)pool.malloc(len + 1);
316: enum EscapeState {
1.33 paf 317: EscapeRest,
318: EscapeFirst,
1.14 paf 319: EscapeSecond
320: } escapeState=EscapeRest;
321: int escapedValue=0;
322: int srcPos=0;
323: int dstPos=0;
324: while(srcPos < len) {
325: int ch=cp[srcPos];
326: switch(escapeState) {
327: case EscapeRest:
328: if(ch=='%') {
329: escapeState=EscapeFirst;
330: } else if(ch=='+') {
331: s[dstPos++]=' ';
332: } else {
333: s[dstPos++]=ch;
334: }
335: break;
336: case EscapeFirst:
337: escapedValue=hex_value[ch] << 4;
338: escapeState=EscapeSecond;
339: break;
340: case EscapeSecond:
341: escapedValue +=hex_value[ch];
342: s[dstPos++]=escapedValue;
343: escapeState=EscapeRest;
344: break;
345: }
346: srcPos++;
347: }
348: s[dstPos]=0;
349: return s;
350: }
351:
1.52 paf 352: /// used by attributed_meaning_to_string / append_attribute_subattribute
1.40 paf 353: struct Attributed_meaning_info {
1.52 paf 354: String *header; // header line being constructed
355: String::Untaint_lang lang; // language in which to append to that line
1.40 paf 356: };
1.17 paf 357: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 358: void *info) {
359: if(akey==VALUE_NAME)
360: return;
361:
1.40 paf 362: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
363:
1.14 paf 364: // ...; charset=windows1251
1.48 paf 365: *ami.header << "; ";
1.40 paf 366: ami.header->append(akey, ami.lang, true);
1.48 paf 367: *ami.header << "=";
368: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true);
1.14 paf 369: }
1.49 paf 370: const String& attributed_meaning_to_string(Value& meaning,
371: String::Untaint_lang lang) {
1.20 paf 372: String &result=*new(meaning.pool()) String(meaning.pool());
373: if(Hash *hash=meaning.get_hash()) {
1.14 paf 374: // $value(value) $subattribute(subattribute value)
375: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 376: result.append(value->as_string(), lang, true);
1.14 paf 377:
1.40 paf 378: Attributed_meaning_info attributed_meaning_info={
1.52 paf 379: &result,
380: lang
1.40 paf 381: };
382: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 383: } else // result value
1.40 paf 384: result.append(meaning.as_string(), lang, true);
1.14 paf 385:
386: return result;
1.24 paf 387: }
388:
389: #ifdef WIN32
390: void back_slashes_to_slashes(char *s) {
391: if(s)
392: for(; *s; s++)
393: if(*s=='\\')
394: *s='/';
395: }
1.42 paf 396: /*
397: void slashes_to_back_slashes(char *s) {
398: if(s)
399: for(; *s; s++)
400: if(*s=='/')
401: *s='\\';
402: }
403: */
1.24 paf 404: #endif
1.41 paf 405:
406: bool StrEqNc(const char *s1, const char *s2, bool strict) {
407: while(true) {
408: if(!(*s1)) {
409: if(!(*s2))
410: return true;
411: else
412: return !strict;
413: } else if(!(*s2))
414: return !strict;
415: if(isalpha(*s1)) {
416: if(tolower(*s1) !=tolower(*s2))
417: return false;
418: } else if((*s1) !=(*s2))
419: return false;
420: s1++;
421: s2++;
422: }
1.48 paf 423: }
424:
425: char *unquote(char*& current, char stop_at) {
426: char *result=current;
427: char *dest=current;
428: // skip leading WS
429: while(*current==' ' || *current=='\t')
430: current++;
431: if(!*current)
432: return current=0;
433:
434: bool quoted=*current=='"';
435: if(quoted)
436: current++;
437:
438: for(; *current; ) {
439: if(quoted)
440: switch(*current) {
441: case '\\': // "...\c
442: if(current[1])
443: current++;
444: break;
445: case '"':
446: current++;
447: goto break2;
448: }
449: else
450: if(*current==stop_at)
451: break;
452:
453: *dest++=*current++;
454: }
455: break2:
456: if(*current)
457: current++; // skip 'stop_at'
458: *dest=0;
459: return result;
1.57 parser 460: }
461:
462: static int isLeap(int year) {
463: return !(
464: (year % 4) || ((year % 400) && !(year % 100))
465: );
466: }
467:
468: int getMonthDays(int year, int month) {
469: int monthDays[]={
470: 31,
471: isLeap(year) ? 29 : 28,
472: 31,
473: 30,
474: 31,
475: 30,
476: 31,
477: 31,
478: 30,
479: 31,
480: 30,
481: 31
482: };
483: return monthDays[month];
1.41 paf 484: }
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