Annotation of parser3/src/main/pa_common.C, revision 1.52
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:
1.52 ! paf 8: $Id: pa_common.C,v 1.51 2001/04/25 11:02:57 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:
1.51 paf 166:
167: static bool entry_readable(const String& file_spec, bool need_dir) {
168: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
169: struct stat finfo;
170: if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) {
171: bool is_dir=(bool)(finfo.st_mode&S_IFDIR);
172: return is_dir==need_dir;
173: }
174: return false;
175: }
1.31 paf 176: bool file_readable(const String& file_spec) {
1.51 paf 177: return entry_readable(file_spec, false);
178: }
179: bool dir_readable(const String& file_spec) {
180: return entry_readable(file_spec, true);
1.43 paf 181: }
182: bool file_executable(const String& file_spec) {
183: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 paf 184: }
185:
186: size_t file_size(const String& file_spec) {
187: Pool& pool=file_spec.pool();
188: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
189: struct stat finfo;
190: if(stat(fname, &finfo)!=0)
191: PTHROW(0, 0,
192: &file_spec,
1.45 paf 193: "write failed: %s (%d)", strerror(errno), errno);
1.44 paf 194: return finfo.st_size;
1.18 paf 195: }
196:
1.8 paf 197: char *getrow(char **row_ref, char delim) {
198: char *result=*row_ref;
199: if(result) {
200: *row_ref=strchr(result, delim);
201: if(*row_ref)
202: *((*row_ref)++)=0;
203: else if(!*result)
204: return 0;
205: }
206: return result;
207: }
208:
1.23 paf 209: char *lsplit(char *string, char delim) {
210: if(string) {
211: char *v=strchr(string, delim);
1.8 paf 212: if(v) {
213: *v=0;
214: return v+1;
215: }
216: }
217: return 0;
218: }
219:
220: char *lsplit(char **string_ref, char delim) {
221: char *result=*string_ref;
222: char *next=lsplit(*string_ref, delim);
223: *string_ref=next;
224: return result;
1.9 paf 225: }
226:
227: char *rsplit(char *string, char delim) {
1.18 paf 228: if(string) {
1.9 paf 229: char *v=strrchr(string, delim);
1.18 paf 230: if(v) {
1.9 paf 231: *v=0;
232: return v+1;
233: }
234: }
235: return NULL;
1.10 paf 236: }
237:
1.37 paf 238: /// @todo less stupid type detection
1.10 paf 239: char *format(Pool& pool, double value, char *fmt) {
240: char *result=(char *)pool.malloc(MAX_NUMBER);
241: if(fmt)
242: if(strpbrk(fmt, "diouxX"))
243: if(strpbrk(fmt, "ouxX"))
1.33 paf 244: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 245: else
1.33 paf 246: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 247: else
248: snprintf(result, MAX_NUMBER, fmt, value);
249: else
1.33 paf 250: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 251:
252: return result;
1.12 paf 253: }
254:
1.36 paf 255: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 256: #ifdef WIN32
257: do{
258: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
259: if(chunk_written<=0)
260: break;
261: size-=chunk_written;
1.36 paf 262: buf=((const char*)buf)+chunk_written;
1.12 paf 263: } while(size>0);
264:
265: return size;
266: #else
1.13 paf 267: return fwrite(buf, 1, size, stdout);
1.12 paf 268: #endif
1.2 paf 269: }
1.14 paf 270:
271: const char *unescape_chars(Pool& pool, const char *cp, int len) {
272: char *s=(char *)pool.malloc(len + 1);
273: enum EscapeState {
1.33 paf 274: EscapeRest,
275: EscapeFirst,
1.14 paf 276: EscapeSecond
277: } escapeState=EscapeRest;
278: int escapedValue=0;
279: int srcPos=0;
280: int dstPos=0;
281: while(srcPos < len) {
282: int ch=cp[srcPos];
283: switch(escapeState) {
284: case EscapeRest:
285: if(ch=='%') {
286: escapeState=EscapeFirst;
287: } else if(ch=='+') {
288: s[dstPos++]=' ';
289: } else {
290: s[dstPos++]=ch;
291: }
292: break;
293: case EscapeFirst:
294: escapedValue=hex_value[ch] << 4;
295: escapeState=EscapeSecond;
296: break;
297: case EscapeSecond:
298: escapedValue +=hex_value[ch];
299: s[dstPos++]=escapedValue;
300: escapeState=EscapeRest;
301: break;
302: }
303: srcPos++;
304: }
305: s[dstPos]=0;
306: return s;
307: }
308:
1.52 ! paf 309: /// used by attributed_meaning_to_string / append_attribute_subattribute
1.40 paf 310: struct Attributed_meaning_info {
1.52 ! paf 311: String *header; // header line being constructed
! 312: String::Untaint_lang lang; // language in which to append to that line
1.40 paf 313: };
1.17 paf 314: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 315: void *info) {
316: if(akey==VALUE_NAME)
317: return;
318:
1.40 paf 319: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
320:
1.14 paf 321: // ...; charset=windows1251
1.48 paf 322: *ami.header << "; ";
1.40 paf 323: ami.header->append(akey, ami.lang, true);
1.48 paf 324: *ami.header << "=";
325: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true);
1.14 paf 326: }
1.49 paf 327: const String& attributed_meaning_to_string(Value& meaning,
328: String::Untaint_lang lang) {
1.20 paf 329: String &result=*new(meaning.pool()) String(meaning.pool());
330: if(Hash *hash=meaning.get_hash()) {
1.14 paf 331: // $value(value) $subattribute(subattribute value)
332: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 333: result.append(value->as_string(), lang, true);
1.14 paf 334:
1.40 paf 335: Attributed_meaning_info attributed_meaning_info={
1.52 ! paf 336: &result,
! 337: lang
1.40 paf 338: };
339: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 340: } else // result value
1.40 paf 341: result.append(meaning.as_string(), lang, true);
1.14 paf 342:
343: return result;
1.24 paf 344: }
345:
346: #ifdef WIN32
347: void back_slashes_to_slashes(char *s) {
348: if(s)
349: for(; *s; s++)
350: if(*s=='\\')
351: *s='/';
352: }
1.42 paf 353: /*
354: void slashes_to_back_slashes(char *s) {
355: if(s)
356: for(; *s; s++)
357: if(*s=='/')
358: *s='\\';
359: }
360: */
1.24 paf 361: #endif
1.41 paf 362:
363: bool StrEqNc(const char *s1, const char *s2, bool strict) {
364: while(true) {
365: if(!(*s1)) {
366: if(!(*s2))
367: return true;
368: else
369: return !strict;
370: } else if(!(*s2))
371: return !strict;
372: if(isalpha(*s1)) {
373: if(tolower(*s1) !=tolower(*s2))
374: return false;
375: } else if((*s1) !=(*s2))
376: return false;
377: s1++;
378: s2++;
379: }
1.48 paf 380: }
381:
382: char *unquote(char*& current, char stop_at) {
383: char *result=current;
384: char *dest=current;
385: // skip leading WS
386: while(*current==' ' || *current=='\t')
387: current++;
388: if(!*current)
389: return current=0;
390:
391: bool quoted=*current=='"';
392: if(quoted)
393: current++;
394:
395: for(; *current; ) {
396: if(quoted)
397: switch(*current) {
398: case '\\': // "...\c
399: if(current[1])
400: current++;
401: break;
402: case '"':
403: current++;
404: goto break2;
405: }
406: else
407: if(*current==stop_at)
408: break;
409:
410: *dest++=*current++;
411: }
412: break2:
413: if(*current)
414: current++; // skip 'stop_at'
415: *dest=0;
416: return result;
1.41 paf 417: }
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