Annotation of parser3/src/main/pa_common.C, revision 1.50
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)
1.5 paf 7:
1.50 ! paf 8: $Id: pa_common.C,v 1.49 2001/04/23 08:52:24 paf Exp $
1.1 paf 9: */
10:
1.22 paf 11: #include "pa_config_includes.h"
1.1 paf 12: #include "pa_common.h"
1.2 paf 13: #include "pa_types.h"
1.4 paf 14: #include "pa_exception.h"
1.14 paf 15: #include "pa_pool.h"
16: #include "pa_globals.h"
17: #include "pa_value.h"
18: #include "pa_hash.h"
19: #include "pa_string.h"
1.1 paf 20:
1.47 paf 21: #ifndef WIN32
22: # ifndef _O_TEXT
23: # define _O_TEXT 0
24: # endif
25: # ifndef _O_BINARY
26: # define _O_BINARY 0
27: # endif
28: #endif
29:
1.22 paf 30: #if _MSC_VER
1.1 paf 31:
32: int __vsnprintf(char *b, size_t s, const char *f, va_list l) {
33: int r=_vsnprintf(b, --s, f, l);
34: b[s]=0;
35: return r;
36: }
37: int __snprintf(char *b, size_t s, const char *f, ...) {
38: va_list l;
39: va_start(l, f);
40: int r=__vsnprintf(b, s, f, l);
41: va_end(l);
42: return r;
43: }
44:
45: #endif
1.2 paf 46:
1.18 paf 47:
1.28 paf 48: char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) {
1.34 paf 49: void *result;
50: size_t size;
1.35 paf 51: return file_read(pool, file_spec, result, size, true,
52: fail_on_read_problem)?(char *)result:0;
1.34 paf 53: }
54: bool file_read(Pool& pool, const String& file_spec,
1.44 paf 55: void*& data, size_t& read_size, bool as_text,
56: bool fail_on_read_problem,
57: size_t offset, size_t limit) {
58: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.33 paf 59: int f;
1.2 paf 60: struct stat finfo;
1.33 paf 61:
62: // first open, next stat:
1.45 paf 63: // directory update of NTFS hard links performed on open.
1.33 paf 64: // ex:
65: // a.html:^test[] and b.html hardlink to a.html
66: // user inserts ! before ^test in a.html
67: // directory entry of b.html in NTFS not updated at once,
1.35 paf 68: // they delay update till open, so we would receive "!^test[" string
69: // if would do stat, next open.
1.34 paf 70: if(
71: (f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 &&
72: stat(fname, &finfo)==0) {
1.2 paf 73: /*if(exclusive)
74: flock(f, LOCK_EX);*/
1.44 paf 75: size_t max_size=limit?min(offset+limit, finfo.st_size)-offset:finfo.st_size;
1.47 paf 76: if(!max_size) { // eof
77: data=0;
78: read_size=0;
79: return true;
80: }
1.44 paf 81: data=pool.malloc(max_size+(as_text?1:0));
1.45 paf 82: if(offset)
83: lseek(f, offset, SEEK_SET);
1.44 paf 84: read_size=read(f, data, max_size);
1.2 paf 85: /*if(exclusive)
86: flock(f, LOCK_UN);*/
87: close(f);
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,
1.45 paf 103: "read failed: %s (%d)", strerror(errno), errno);
1.34 paf 104: return false;
1.8 paf 105: }
106:
1.18 paf 107: void file_write(Pool& pool,
1.28 paf 108: const String& file_spec,
1.34 paf 109: const void *data, size_t size,
1.33 paf 110: bool as_text/*,
1.20 paf 111: bool exclusive*/) {
1.44 paf 112: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.28 paf 113: int f;
1.50 ! paf 114: if(access(fname, W_OK)!=0) {/*no*/
! 115: size_t pos_after=1;
! 116: int pos_before;
! 117: while((pos_before=file_spec.pos("/", 1, pos_after))>=0) {
! 118: mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_NAME), 0775);
! 119: pos_after=pos_before+1;
! 120: }
! 121:
1.33 paf 122: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 123: close(f);
124: }
125: if(access(fname, R_OK|W_OK)==0) {
1.34 paf 126: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 127: #ifdef WIN32
1.28 paf 128: |O_TRUNC
1.18 paf 129: #endif
1.28 paf 130: ;
1.33 paf 131: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 132: /*if(exclusive)
133: flock(f, LOCK_EX);*/
134:
1.33 paf 135: if(size) write(f, data, size);
1.18 paf 136: #ifndef WIN32
1.33 paf 137: ftruncate(f, size);
1.18 paf 138: #endif
1.28 paf 139: /*if(exclusive)
140: flock(f, LOCK_UN);*/
141: close(f);
142: return;
1.18 paf 143: }
144: }
1.33 paf 145: PTHROW(0, 0,
146: &file_spec,
1.45 paf 147: "write failed: %s (%d)", strerror(errno), errno);
1.30 paf 148: }
149:
1.50 ! paf 150: static void rmdir(const String& file_spec, size_t pos_after) {
! 151: int pos_before;
! 152: if((pos_before=file_spec.pos("/", 1, pos_after))>=0)
! 153: rmdir(file_spec, pos_before+1);
! 154:
! 155: rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_NAME));
! 156: }
1.30 paf 157: void file_delete(Pool& pool, const String& file_spec) {
1.39 paf 158: if(unlink(file_spec.cstr(String::UL_FILE_NAME))!=0)
1.33 paf 159: PTHROW(0, 0,
160: &file_spec,
1.45 paf 161: "unlink failed: %s (%d)", strerror(errno), errno);
1.50 ! paf 162:
! 163: rmdir(file_spec, 1);
1.31 paf 164: }
165:
166: bool file_readable(const String& file_spec) {
1.39 paf 167: return access(file_spec.cstr(String::UL_FILE_NAME), R_OK)==0;
1.43 paf 168: }
169: bool file_executable(const String& file_spec) {
170: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 paf 171: }
172:
173: size_t file_size(const String& file_spec) {
174: Pool& pool=file_spec.pool();
175: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
176: struct stat finfo;
177: if(stat(fname, &finfo)!=0)
178: PTHROW(0, 0,
179: &file_spec,
1.45 paf 180: "write failed: %s (%d)", strerror(errno), errno);
1.44 paf 181: return finfo.st_size;
1.18 paf 182: }
183:
1.8 paf 184: char *getrow(char **row_ref, char delim) {
185: char *result=*row_ref;
186: if(result) {
187: *row_ref=strchr(result, delim);
188: if(*row_ref)
189: *((*row_ref)++)=0;
190: else if(!*result)
191: return 0;
192: }
193: return result;
194: }
195:
1.23 paf 196: char *lsplit(char *string, char delim) {
197: if(string) {
198: char *v=strchr(string, delim);
1.8 paf 199: if(v) {
200: *v=0;
201: return v+1;
202: }
203: }
204: return 0;
205: }
206:
207: char *lsplit(char **string_ref, char delim) {
208: char *result=*string_ref;
209: char *next=lsplit(*string_ref, delim);
210: *string_ref=next;
211: return result;
1.9 paf 212: }
213:
214: char *rsplit(char *string, char delim) {
1.18 paf 215: if(string) {
1.9 paf 216: char *v=strrchr(string, delim);
1.18 paf 217: if(v) {
1.9 paf 218: *v=0;
219: return v+1;
220: }
221: }
222: return NULL;
1.10 paf 223: }
224:
1.37 paf 225: /// @todo less stupid type detection
1.10 paf 226: char *format(Pool& pool, double value, char *fmt) {
227: char *result=(char *)pool.malloc(MAX_NUMBER);
228: if(fmt)
229: if(strpbrk(fmt, "diouxX"))
230: if(strpbrk(fmt, "ouxX"))
1.33 paf 231: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 232: else
1.33 paf 233: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 234: else
235: snprintf(result, MAX_NUMBER, fmt, value);
236: else
1.33 paf 237: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 238:
239: return result;
1.12 paf 240: }
241:
1.36 paf 242: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 243: #ifdef WIN32
244: do{
245: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
246: if(chunk_written<=0)
247: break;
248: size-=chunk_written;
1.36 paf 249: buf=((const char*)buf)+chunk_written;
1.12 paf 250: } while(size>0);
251:
252: return size;
253: #else
1.13 paf 254: return fwrite(buf, 1, size, stdout);
1.12 paf 255: #endif
1.2 paf 256: }
1.14 paf 257:
258: const char *unescape_chars(Pool& pool, const char *cp, int len) {
259: char *s=(char *)pool.malloc(len + 1);
260: enum EscapeState {
1.33 paf 261: EscapeRest,
262: EscapeFirst,
1.14 paf 263: EscapeSecond
264: } escapeState=EscapeRest;
265: int escapedValue=0;
266: int srcPos=0;
267: int dstPos=0;
268: while(srcPos < len) {
269: int ch=cp[srcPos];
270: switch(escapeState) {
271: case EscapeRest:
272: if(ch=='%') {
273: escapeState=EscapeFirst;
274: } else if(ch=='+') {
275: s[dstPos++]=' ';
276: } else {
277: s[dstPos++]=ch;
278: }
279: break;
280: case EscapeFirst:
281: escapedValue=hex_value[ch] << 4;
282: escapeState=EscapeSecond;
283: break;
284: case EscapeSecond:
285: escapedValue +=hex_value[ch];
286: s[dstPos++]=escapedValue;
287: escapeState=EscapeRest;
288: break;
289: }
290: srcPos++;
291: }
292: s[dstPos]=0;
293: return s;
294: }
295:
1.40 paf 296: struct Attributed_meaning_info {
297: String::Untaint_lang lang;
298: String *header;
299: };
1.17 paf 300: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 301: void *info) {
302: if(akey==VALUE_NAME)
303: return;
304:
1.40 paf 305: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
306:
1.14 paf 307: // ...; charset=windows1251
1.48 paf 308: *ami.header << "; ";
1.40 paf 309: ami.header->append(akey, ami.lang, true);
1.48 paf 310: *ami.header << "=";
311: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true);
1.14 paf 312: }
1.49 paf 313: const String& attributed_meaning_to_string(Value& meaning,
314: String::Untaint_lang lang) {
1.20 paf 315: String &result=*new(meaning.pool()) String(meaning.pool());
316: if(Hash *hash=meaning.get_hash()) {
1.14 paf 317: // $value(value) $subattribute(subattribute value)
318: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 319: result.append(value->as_string(), lang, true);
1.14 paf 320:
1.40 paf 321: Attributed_meaning_info attributed_meaning_info={
322: lang,
323: &result
324: };
325: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 326: } else // result value
1.40 paf 327: result.append(meaning.as_string(), lang, true);
1.14 paf 328:
329: return result;
1.24 paf 330: }
331:
332: #ifdef WIN32
333: void back_slashes_to_slashes(char *s) {
334: if(s)
335: for(; *s; s++)
336: if(*s=='\\')
337: *s='/';
338: }
1.42 paf 339: /*
340: void slashes_to_back_slashes(char *s) {
341: if(s)
342: for(; *s; s++)
343: if(*s=='/')
344: *s='\\';
345: }
346: */
1.24 paf 347: #endif
1.41 paf 348:
349: bool StrEqNc(const char *s1, const char *s2, bool strict) {
350: while(true) {
351: if(!(*s1)) {
352: if(!(*s2))
353: return true;
354: else
355: return !strict;
356: } else if(!(*s2))
357: return !strict;
358: if(isalpha(*s1)) {
359: if(tolower(*s1) !=tolower(*s2))
360: return false;
361: } else if((*s1) !=(*s2))
362: return false;
363: s1++;
364: s2++;
365: }
1.48 paf 366: }
367:
368: char *unquote(char*& current, char stop_at) {
369: char *result=current;
370: char *dest=current;
371: // skip leading WS
372: while(*current==' ' || *current=='\t')
373: current++;
374: if(!*current)
375: return current=0;
376:
377: bool quoted=*current=='"';
378: if(quoted)
379: current++;
380:
381: for(; *current; ) {
382: if(quoted)
383: switch(*current) {
384: case '\\': // "...\c
385: if(current[1])
386: current++;
387: break;
388: case '"':
389: current++;
390: goto break2;
391: }
392: else
393: if(*current==stop_at)
394: break;
395:
396: *dest++=*current++;
397: }
398: break2:
399: if(*current)
400: current++; // skip 'stop_at'
401: *dest=0;
402: return result;
1.41 paf 403: }
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