Annotation of parser3/src/main/pa_common.C, revision 1.55
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:
1.55 ! parser 8: $Id: pa_common.C,v 1.54 2001/05/19 17:37:06 parser Exp $
1.1 paf 9: */
1.55 ! parser 10: static char *RCSId="$Id$";
1.1 paf 11:
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,
1.54 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);
1.31 paf 168: }
169:
1.51 paf 170:
171: static bool entry_readable(const String& file_spec, bool need_dir) {
172: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
173: struct stat finfo;
174: if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) {
175: bool is_dir=(bool)(finfo.st_mode&S_IFDIR);
176: return is_dir==need_dir;
177: }
178: return false;
179: }
1.31 paf 180: bool file_readable(const String& file_spec) {
1.51 paf 181: return entry_readable(file_spec, false);
182: }
183: bool dir_readable(const String& file_spec) {
184: return entry_readable(file_spec, true);
1.43 paf 185: }
186: bool file_executable(const String& file_spec) {
187: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 paf 188: }
189:
190: size_t file_size(const String& file_spec) {
191: Pool& pool=file_spec.pool();
192: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
193: struct stat finfo;
194: if(stat(fname, &finfo)!=0)
195: PTHROW(0, 0,
196: &file_spec,
1.54 parser 197: "getting file size failed: %s (%d), real filename '%s'",
198: strerror(errno), errno, fname);
1.44 paf 199: return finfo.st_size;
1.18 paf 200: }
201:
1.8 paf 202: char *getrow(char **row_ref, char delim) {
203: char *result=*row_ref;
204: if(result) {
205: *row_ref=strchr(result, delim);
206: if(*row_ref)
207: *((*row_ref)++)=0;
208: else if(!*result)
209: return 0;
210: }
211: return result;
212: }
213:
1.23 paf 214: char *lsplit(char *string, char delim) {
215: if(string) {
216: char *v=strchr(string, delim);
1.8 paf 217: if(v) {
218: *v=0;
219: return v+1;
220: }
221: }
222: return 0;
223: }
224:
225: char *lsplit(char **string_ref, char delim) {
226: char *result=*string_ref;
227: char *next=lsplit(*string_ref, delim);
228: *string_ref=next;
229: return result;
1.9 paf 230: }
231:
232: char *rsplit(char *string, char delim) {
1.18 paf 233: if(string) {
1.9 paf 234: char *v=strrchr(string, delim);
1.18 paf 235: if(v) {
1.9 paf 236: *v=0;
237: return v+1;
238: }
239: }
240: return NULL;
1.10 paf 241: }
242:
1.37 paf 243: /// @todo less stupid type detection
1.10 paf 244: char *format(Pool& pool, double value, char *fmt) {
245: char *result=(char *)pool.malloc(MAX_NUMBER);
246: if(fmt)
247: if(strpbrk(fmt, "diouxX"))
248: if(strpbrk(fmt, "ouxX"))
1.33 paf 249: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 250: else
1.33 paf 251: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 252: else
253: snprintf(result, MAX_NUMBER, fmt, value);
254: else
1.33 paf 255: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 256:
257: return result;
1.12 paf 258: }
259:
1.36 paf 260: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 261: #ifdef WIN32
262: do{
263: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
264: if(chunk_written<=0)
265: break;
266: size-=chunk_written;
1.36 paf 267: buf=((const char*)buf)+chunk_written;
1.12 paf 268: } while(size>0);
269:
270: return size;
271: #else
1.13 paf 272: return fwrite(buf, 1, size, stdout);
1.12 paf 273: #endif
1.2 paf 274: }
1.14 paf 275:
276: const char *unescape_chars(Pool& pool, const char *cp, int len) {
277: char *s=(char *)pool.malloc(len + 1);
278: enum EscapeState {
1.33 paf 279: EscapeRest,
280: EscapeFirst,
1.14 paf 281: EscapeSecond
282: } escapeState=EscapeRest;
283: int escapedValue=0;
284: int srcPos=0;
285: int dstPos=0;
286: while(srcPos < len) {
287: int ch=cp[srcPos];
288: switch(escapeState) {
289: case EscapeRest:
290: if(ch=='%') {
291: escapeState=EscapeFirst;
292: } else if(ch=='+') {
293: s[dstPos++]=' ';
294: } else {
295: s[dstPos++]=ch;
296: }
297: break;
298: case EscapeFirst:
299: escapedValue=hex_value[ch] << 4;
300: escapeState=EscapeSecond;
301: break;
302: case EscapeSecond:
303: escapedValue +=hex_value[ch];
304: s[dstPos++]=escapedValue;
305: escapeState=EscapeRest;
306: break;
307: }
308: srcPos++;
309: }
310: s[dstPos]=0;
311: return s;
312: }
313:
1.52 paf 314: /// used by attributed_meaning_to_string / append_attribute_subattribute
1.40 paf 315: struct Attributed_meaning_info {
1.52 paf 316: String *header; // header line being constructed
317: String::Untaint_lang lang; // language in which to append to that line
1.40 paf 318: };
1.17 paf 319: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 320: void *info) {
321: if(akey==VALUE_NAME)
322: return;
323:
1.40 paf 324: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
325:
1.14 paf 326: // ...; charset=windows1251
1.48 paf 327: *ami.header << "; ";
1.40 paf 328: ami.header->append(akey, ami.lang, true);
1.48 paf 329: *ami.header << "=";
330: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true);
1.14 paf 331: }
1.49 paf 332: const String& attributed_meaning_to_string(Value& meaning,
333: String::Untaint_lang lang) {
1.20 paf 334: String &result=*new(meaning.pool()) String(meaning.pool());
335: if(Hash *hash=meaning.get_hash()) {
1.14 paf 336: // $value(value) $subattribute(subattribute value)
337: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 338: result.append(value->as_string(), lang, true);
1.14 paf 339:
1.40 paf 340: Attributed_meaning_info attributed_meaning_info={
1.52 paf 341: &result,
342: lang
1.40 paf 343: };
344: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 345: } else // result value
1.40 paf 346: result.append(meaning.as_string(), lang, true);
1.14 paf 347:
348: return result;
1.24 paf 349: }
350:
351: #ifdef WIN32
352: void back_slashes_to_slashes(char *s) {
353: if(s)
354: for(; *s; s++)
355: if(*s=='\\')
356: *s='/';
357: }
1.42 paf 358: /*
359: void slashes_to_back_slashes(char *s) {
360: if(s)
361: for(; *s; s++)
362: if(*s=='/')
363: *s='\\';
364: }
365: */
1.24 paf 366: #endif
1.41 paf 367:
368: bool StrEqNc(const char *s1, const char *s2, bool strict) {
369: while(true) {
370: if(!(*s1)) {
371: if(!(*s2))
372: return true;
373: else
374: return !strict;
375: } else if(!(*s2))
376: return !strict;
377: if(isalpha(*s1)) {
378: if(tolower(*s1) !=tolower(*s2))
379: return false;
380: } else if((*s1) !=(*s2))
381: return false;
382: s1++;
383: s2++;
384: }
1.48 paf 385: }
386:
387: char *unquote(char*& current, char stop_at) {
388: char *result=current;
389: char *dest=current;
390: // skip leading WS
391: while(*current==' ' || *current=='\t')
392: current++;
393: if(!*current)
394: return current=0;
395:
396: bool quoted=*current=='"';
397: if(quoted)
398: current++;
399:
400: for(; *current; ) {
401: if(quoted)
402: switch(*current) {
403: case '\\': // "...\c
404: if(current[1])
405: current++;
406: break;
407: case '"':
408: current++;
409: goto break2;
410: }
411: else
412: if(*current==stop_at)
413: break;
414:
415: *dest++=*current++;
416: }
417: break2:
418: if(*current)
419: current++; // skip 'stop_at'
420: *dest=0;
421: return result;
1.41 paf 422: }
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