![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to pa_common.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main|
Return to pa_common.C CVS log | Up to [parser3project] / parser3 / src / main |
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:
1.49 ! paf 8: $Id: pa_common.C,v 1.48 2001/04/19 15:38:00 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:
1.38 paf 107: /// @test mkdirs
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;
115: if(access(fname, F_OK)!=0) {/*no*/
1.33 paf 116: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 117: close(f);
118: }
119: if(access(fname, R_OK|W_OK)==0) {
1.34 paf 120: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 121: #ifdef WIN32
1.28 paf 122: |O_TRUNC
1.18 paf 123: #endif
1.28 paf 124: ;
1.33 paf 125: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 126: /*if(exclusive)
127: flock(f, LOCK_EX);*/
128:
1.33 paf 129: if(size) write(f, data, size);
1.18 paf 130: #ifndef WIN32
1.33 paf 131: ftruncate(f, size);
1.18 paf 132: #endif
1.28 paf 133: /*if(exclusive)
134: flock(f, LOCK_UN);*/
135: close(f);
136: return;
1.18 paf 137: }
138: }
1.33 paf 139: PTHROW(0, 0,
140: &file_spec,
1.45 paf 141: "write failed: %s (%d)", strerror(errno), errno);
1.30 paf 142: }
143:
144: void file_delete(Pool& pool, const String& file_spec) {
1.39 paf 145: if(unlink(file_spec.cstr(String::UL_FILE_NAME))!=0)
1.33 paf 146: PTHROW(0, 0,
147: &file_spec,
1.45 paf 148: "unlink failed: %s (%d)", strerror(errno), errno);
1.31 paf 149: }
150:
151: bool file_readable(const String& file_spec) {
1.39 paf 152: return access(file_spec.cstr(String::UL_FILE_NAME), R_OK)==0;
1.43 paf 153: }
154: bool file_executable(const String& file_spec) {
155: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 paf 156: }
157:
158: size_t file_size(const String& file_spec) {
159: Pool& pool=file_spec.pool();
160: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
161: struct stat finfo;
162: if(stat(fname, &finfo)!=0)
163: PTHROW(0, 0,
164: &file_spec,
1.45 paf 165: "write failed: %s (%d)", strerror(errno), errno);
1.44 paf 166: return finfo.st_size;
1.18 paf 167: }
168:
1.8 paf 169: char *getrow(char **row_ref, char delim) {
170: char *result=*row_ref;
171: if(result) {
172: *row_ref=strchr(result, delim);
173: if(*row_ref)
174: *((*row_ref)++)=0;
175: else if(!*result)
176: return 0;
177: }
178: return result;
179: }
180:
1.23 paf 181: char *lsplit(char *string, char delim) {
182: if(string) {
183: char *v=strchr(string, delim);
1.8 paf 184: if(v) {
185: *v=0;
186: return v+1;
187: }
188: }
189: return 0;
190: }
191:
192: char *lsplit(char **string_ref, char delim) {
193: char *result=*string_ref;
194: char *next=lsplit(*string_ref, delim);
195: *string_ref=next;
196: return result;
1.9 paf 197: }
198:
199: char *rsplit(char *string, char delim) {
1.18 paf 200: if(string) {
1.9 paf 201: char *v=strrchr(string, delim);
1.18 paf 202: if(v) {
1.9 paf 203: *v=0;
204: return v+1;
205: }
206: }
207: return NULL;
1.10 paf 208: }
209:
1.37 paf 210: /// @todo less stupid type detection
1.10 paf 211: char *format(Pool& pool, double value, char *fmt) {
212: char *result=(char *)pool.malloc(MAX_NUMBER);
213: if(fmt)
214: if(strpbrk(fmt, "diouxX"))
215: if(strpbrk(fmt, "ouxX"))
1.33 paf 216: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 217: else
1.33 paf 218: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 219: else
220: snprintf(result, MAX_NUMBER, fmt, value);
221: else
1.33 paf 222: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 223:
224: return result;
1.12 paf 225: }
226:
1.36 paf 227: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 228: #ifdef WIN32
229: do{
230: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
231: if(chunk_written<=0)
232: break;
233: size-=chunk_written;
1.36 paf 234: buf=((const char*)buf)+chunk_written;
1.12 paf 235: } while(size>0);
236:
237: return size;
238: #else
1.13 paf 239: return fwrite(buf, 1, size, stdout);
1.12 paf 240: #endif
1.2 paf 241: }
1.14 paf 242:
243: const char *unescape_chars(Pool& pool, const char *cp, int len) {
244: char *s=(char *)pool.malloc(len + 1);
245: enum EscapeState {
1.33 paf 246: EscapeRest,
247: EscapeFirst,
1.14 paf 248: EscapeSecond
249: } escapeState=EscapeRest;
250: int escapedValue=0;
251: int srcPos=0;
252: int dstPos=0;
253: while(srcPos < len) {
254: int ch=cp[srcPos];
255: switch(escapeState) {
256: case EscapeRest:
257: if(ch=='%') {
258: escapeState=EscapeFirst;
259: } else if(ch=='+') {
260: s[dstPos++]=' ';
261: } else {
262: s[dstPos++]=ch;
263: }
264: break;
265: case EscapeFirst:
266: escapedValue=hex_value[ch] << 4;
267: escapeState=EscapeSecond;
268: break;
269: case EscapeSecond:
270: escapedValue +=hex_value[ch];
271: s[dstPos++]=escapedValue;
272: escapeState=EscapeRest;
273: break;
274: }
275: srcPos++;
276: }
277: s[dstPos]=0;
278: return s;
279: }
280:
1.40 paf 281: struct Attributed_meaning_info {
282: String::Untaint_lang lang;
283: String *header;
284: };
1.17 paf 285: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 286: void *info) {
287: if(akey==VALUE_NAME)
288: return;
289:
1.40 paf 290: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
291:
1.14 paf 292: // ...; charset=windows1251
1.48 paf 293: *ami.header << "; ";
1.40 paf 294: ami.header->append(akey, ami.lang, true);
1.48 paf 295: *ami.header << "=";
296: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true);
1.14 paf 297: }
1.49 ! paf 298: const String& attributed_meaning_to_string(Value& meaning,
! 299: String::Untaint_lang lang) {
1.20 paf 300: String &result=*new(meaning.pool()) String(meaning.pool());
301: if(Hash *hash=meaning.get_hash()) {
1.14 paf 302: // $value(value) $subattribute(subattribute value)
303: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 304: result.append(value->as_string(), lang, true);
1.14 paf 305:
1.40 paf 306: Attributed_meaning_info attributed_meaning_info={
307: lang,
308: &result
309: };
310: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 311: } else // result value
1.40 paf 312: result.append(meaning.as_string(), lang, true);
1.14 paf 313:
314: return result;
1.24 paf 315: }
316:
317: #ifdef WIN32
318: void back_slashes_to_slashes(char *s) {
319: if(s)
320: for(; *s; s++)
321: if(*s=='\\')
322: *s='/';
323: }
1.42 paf 324: /*
325: void slashes_to_back_slashes(char *s) {
326: if(s)
327: for(; *s; s++)
328: if(*s=='/')
329: *s='\\';
330: }
331: */
1.24 paf 332: #endif
1.41 paf 333:
334: bool StrEqNc(const char *s1, const char *s2, bool strict) {
335: while(true) {
336: if(!(*s1)) {
337: if(!(*s2))
338: return true;
339: else
340: return !strict;
341: } else if(!(*s2))
342: return !strict;
343: if(isalpha(*s1)) {
344: if(tolower(*s1) !=tolower(*s2))
345: return false;
346: } else if((*s1) !=(*s2))
347: return false;
348: s1++;
349: s2++;
350: }
1.48 paf 351: }
352:
353: char *unquote(char*& current, char stop_at) {
354: char *result=current;
355: char *dest=current;
356: // skip leading WS
357: while(*current==' ' || *current=='\t')
358: current++;
359: if(!*current)
360: return current=0;
361:
362: bool quoted=*current=='"';
363: if(quoted)
364: current++;
365:
366: for(; *current; ) {
367: if(quoted)
368: switch(*current) {
369: case '\\': // "...\c
370: if(current[1])
371: current++;
372: break;
373: case '"':
374: current++;
375: goto break2;
376: }
377: else
378: if(*current==stop_at)
379: break;
380:
381: *dest++=*current++;
382: }
383: break2:
384: if(*current)
385: current++; // skip 'stop_at'
386: *dest=0;
387: return result;
1.41 paf 388: }