Annotation of parser3/src/main/pa_common.C, revision 1.54
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:
1.54 ! parser 8: $Id: pa_common.C,v 1.53 2001/05/17 19:33:33 parser Exp $
1.1 paf 9: */
10:
11: #include "pa_common.h"
1.2 paf 12: #include "pa_types.h"
1.4 paf 13: #include "pa_exception.h"
1.14 paf 14: #include "pa_pool.h"
15: #include "pa_globals.h"
16: #include "pa_value.h"
17: #include "pa_hash.h"
18: #include "pa_string.h"
1.1 paf 19:
1.47 paf 20: #ifndef WIN32
21: # ifndef _O_TEXT
22: # define _O_TEXT 0
23: # endif
24: # ifndef _O_BINARY
25: # define _O_BINARY 0
26: # endif
27: #endif
28:
1.22 paf 29: #if _MSC_VER
1.1 paf 30:
31: int __vsnprintf(char *b, size_t s, const char *f, va_list l) {
32: int r=_vsnprintf(b, --s, f, l);
33: b[s]=0;
34: return r;
35: }
36: int __snprintf(char *b, size_t s, const char *f, ...) {
37: va_list l;
38: va_start(l, f);
39: int r=__vsnprintf(b, s, f, l);
40: va_end(l);
41: return r;
42: }
43:
44: #endif
1.2 paf 45:
1.18 paf 46:
1.28 paf 47: char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) {
1.34 paf 48: void *result;
49: size_t size;
1.35 paf 50: return file_read(pool, file_spec, result, size, true,
51: fail_on_read_problem)?(char *)result:0;
1.34 paf 52: }
53: bool file_read(Pool& pool, const String& file_spec,
1.44 paf 54: void*& data, size_t& read_size, bool as_text,
55: bool fail_on_read_problem,
56: size_t offset, size_t limit) {
57: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
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;
78: return true;
79: }
1.44 paf 80: data=pool.malloc(max_size+(as_text?1:0));
1.45 paf 81: if(offset)
82: lseek(f, offset, SEEK_SET);
1.44 paf 83: read_size=read(f, data, max_size);
1.2 paf 84: /*if(exclusive)
85: flock(f, LOCK_UN);*/
86: close(f);
1.32 paf 87:
1.44 paf 88: if(read_size>=0 && read_size<=max_size) {
1.34 paf 89: if(as_text)
1.46 paf 90: ((char*&)data)[read_size]=0;
1.34 paf 91: } else
1.33 paf 92: PTHROW(0, 0,
93: &file_spec,
1.44 paf 94: "read failed: actually read %d bytes count not in [0..%lu] valid range",
95: read_size, (unsigned long)max_size); //never
1.32 paf 96:
1.34 paf 97: return true;//prepare_config(result, remove_empty_lines);
1.2 paf 98: }
1.4 paf 99: if(fail_on_read_problem)
1.33 paf 100: PTHROW(0, 0,
101: &file_spec,
1.54 ! parser 102: "read failed: %s (%d), actual filename '%s'",
! 103: strerror(errno), errno, fname);
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,
1.54 ! parser 147: "write failed: %s (%d), actual filename '%s'",
! 148: strerror(errno), errno, fname);
1.30 paf 149: }
150:
1.50 paf 151: static void rmdir(const String& file_spec, size_t pos_after) {
152: int pos_before;
153: if((pos_before=file_spec.pos("/", 1, pos_after))>=0)
154: rmdir(file_spec, pos_before+1);
155:
156: rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_NAME));
157: }
1.30 paf 158: void file_delete(Pool& pool, const String& file_spec) {
1.54 ! parser 159: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
! 160: if(unlink(fname)!=0)
1.33 paf 161: PTHROW(0, 0,
162: &file_spec,
1.54 ! parser 163: "unlink failed: %s (%d), actual filename '%s'",
! 164: strerror(errno), errno, fname);
1.50 paf 165:
166: rmdir(file_spec, 1);
1.31 paf 167: }
168:
1.51 paf 169:
170: static bool entry_readable(const String& file_spec, bool need_dir) {
171: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
172: struct stat finfo;
173: if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) {
174: bool is_dir=(bool)(finfo.st_mode&S_IFDIR);
175: return is_dir==need_dir;
176: }
177: return false;
178: }
1.31 paf 179: bool file_readable(const String& file_spec) {
1.51 paf 180: return entry_readable(file_spec, false);
181: }
182: bool dir_readable(const String& file_spec) {
183: return entry_readable(file_spec, true);
1.43 paf 184: }
185: bool file_executable(const String& file_spec) {
186: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 paf 187: }
188:
189: size_t file_size(const String& file_spec) {
190: Pool& pool=file_spec.pool();
191: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
192: struct stat finfo;
193: if(stat(fname, &finfo)!=0)
194: PTHROW(0, 0,
195: &file_spec,
1.54 ! parser 196: "getting file size failed: %s (%d), real filename '%s'",
! 197: strerror(errno), errno, fname);
1.44 paf 198: return finfo.st_size;
1.18 paf 199: }
200:
1.8 paf 201: char *getrow(char **row_ref, char delim) {
202: char *result=*row_ref;
203: if(result) {
204: *row_ref=strchr(result, delim);
205: if(*row_ref)
206: *((*row_ref)++)=0;
207: else if(!*result)
208: return 0;
209: }
210: return result;
211: }
212:
1.23 paf 213: char *lsplit(char *string, char delim) {
214: if(string) {
215: char *v=strchr(string, delim);
1.8 paf 216: if(v) {
217: *v=0;
218: return v+1;
219: }
220: }
221: return 0;
222: }
223:
224: char *lsplit(char **string_ref, char delim) {
225: char *result=*string_ref;
226: char *next=lsplit(*string_ref, delim);
227: *string_ref=next;
228: return result;
1.9 paf 229: }
230:
231: char *rsplit(char *string, char delim) {
1.18 paf 232: if(string) {
1.9 paf 233: char *v=strrchr(string, delim);
1.18 paf 234: if(v) {
1.9 paf 235: *v=0;
236: return v+1;
237: }
238: }
239: return NULL;
1.10 paf 240: }
241:
1.37 paf 242: /// @todo less stupid type detection
1.10 paf 243: char *format(Pool& pool, double value, char *fmt) {
244: char *result=(char *)pool.malloc(MAX_NUMBER);
245: if(fmt)
246: if(strpbrk(fmt, "diouxX"))
247: if(strpbrk(fmt, "ouxX"))
1.33 paf 248: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 249: else
1.33 paf 250: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 251: else
252: snprintf(result, MAX_NUMBER, fmt, value);
253: else
1.33 paf 254: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 255:
256: return result;
1.12 paf 257: }
258:
1.36 paf 259: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 260: #ifdef WIN32
261: do{
262: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
263: if(chunk_written<=0)
264: break;
265: size-=chunk_written;
1.36 paf 266: buf=((const char*)buf)+chunk_written;
1.12 paf 267: } while(size>0);
268:
269: return size;
270: #else
1.13 paf 271: return fwrite(buf, 1, size, stdout);
1.12 paf 272: #endif
1.2 paf 273: }
1.14 paf 274:
275: const char *unescape_chars(Pool& pool, const char *cp, int len) {
276: char *s=(char *)pool.malloc(len + 1);
277: enum EscapeState {
1.33 paf 278: EscapeRest,
279: EscapeFirst,
1.14 paf 280: EscapeSecond
281: } escapeState=EscapeRest;
282: int escapedValue=0;
283: int srcPos=0;
284: int dstPos=0;
285: while(srcPos < len) {
286: int ch=cp[srcPos];
287: switch(escapeState) {
288: case EscapeRest:
289: if(ch=='%') {
290: escapeState=EscapeFirst;
291: } else if(ch=='+') {
292: s[dstPos++]=' ';
293: } else {
294: s[dstPos++]=ch;
295: }
296: break;
297: case EscapeFirst:
298: escapedValue=hex_value[ch] << 4;
299: escapeState=EscapeSecond;
300: break;
301: case EscapeSecond:
302: escapedValue +=hex_value[ch];
303: s[dstPos++]=escapedValue;
304: escapeState=EscapeRest;
305: break;
306: }
307: srcPos++;
308: }
309: s[dstPos]=0;
310: return s;
311: }
312:
1.52 paf 313: /// used by attributed_meaning_to_string / append_attribute_subattribute
1.40 paf 314: struct Attributed_meaning_info {
1.52 paf 315: String *header; // header line being constructed
316: String::Untaint_lang lang; // language in which to append to that line
1.40 paf 317: };
1.17 paf 318: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 319: void *info) {
320: if(akey==VALUE_NAME)
321: return;
322:
1.40 paf 323: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
324:
1.14 paf 325: // ...; charset=windows1251
1.48 paf 326: *ami.header << "; ";
1.40 paf 327: ami.header->append(akey, ami.lang, true);
1.48 paf 328: *ami.header << "=";
329: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true);
1.14 paf 330: }
1.49 paf 331: const String& attributed_meaning_to_string(Value& meaning,
332: String::Untaint_lang lang) {
1.20 paf 333: String &result=*new(meaning.pool()) String(meaning.pool());
334: if(Hash *hash=meaning.get_hash()) {
1.14 paf 335: // $value(value) $subattribute(subattribute value)
336: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 337: result.append(value->as_string(), lang, true);
1.14 paf 338:
1.40 paf 339: Attributed_meaning_info attributed_meaning_info={
1.52 paf 340: &result,
341: lang
1.40 paf 342: };
343: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 344: } else // result value
1.40 paf 345: result.append(meaning.as_string(), lang, true);
1.14 paf 346:
347: return result;
1.24 paf 348: }
349:
350: #ifdef WIN32
351: void back_slashes_to_slashes(char *s) {
352: if(s)
353: for(; *s; s++)
354: if(*s=='\\')
355: *s='/';
356: }
1.42 paf 357: /*
358: void slashes_to_back_slashes(char *s) {
359: if(s)
360: for(; *s; s++)
361: if(*s=='/')
362: *s='\\';
363: }
364: */
1.24 paf 365: #endif
1.41 paf 366:
367: bool StrEqNc(const char *s1, const char *s2, bool strict) {
368: while(true) {
369: if(!(*s1)) {
370: if(!(*s2))
371: return true;
372: else
373: return !strict;
374: } else if(!(*s2))
375: return !strict;
376: if(isalpha(*s1)) {
377: if(tolower(*s1) !=tolower(*s2))
378: return false;
379: } else if((*s1) !=(*s2))
380: return false;
381: s1++;
382: s2++;
383: }
1.48 paf 384: }
385:
386: char *unquote(char*& current, char stop_at) {
387: char *result=current;
388: char *dest=current;
389: // skip leading WS
390: while(*current==' ' || *current=='\t')
391: current++;
392: if(!*current)
393: return current=0;
394:
395: bool quoted=*current=='"';
396: if(quoted)
397: current++;
398:
399: for(; *current; ) {
400: if(quoted)
401: switch(*current) {
402: case '\\': // "...\c
403: if(current[1])
404: current++;
405: break;
406: case '"':
407: current++;
408: goto break2;
409: }
410: else
411: if(*current==stop_at)
412: break;
413:
414: *dest++=*current++;
415: }
416: break2:
417: if(*current)
418: current++; // skip 'stop_at'
419: *dest=0;
420: return result;
1.41 paf 421: }
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