Annotation of parser3/src/main/pa_common.C, revision 1.56
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)
1.1 paf 7: */
1.56 ! parser 8: static const char *RCSId="$Id: double.C,v 1.31 2001/06/28 07:41:59 parser Exp $";
1.1 paf 9:
10: #include "pa_common.h"
1.2 paf 11: #include "pa_types.h"
1.4 paf 12: #include "pa_exception.h"
1.14 paf 13: #include "pa_pool.h"
14: #include "pa_globals.h"
15: #include "pa_value.h"
16: #include "pa_hash.h"
17: #include "pa_string.h"
1.1 paf 18:
1.47 paf 19: #ifndef WIN32
20: # ifndef _O_TEXT
21: # define _O_TEXT 0
22: # endif
23: # ifndef _O_BINARY
24: # define _O_BINARY 0
25: # endif
26: #endif
27:
1.22 paf 28: #if _MSC_VER
1.1 paf 29:
30: int __vsnprintf(char *b, size_t s, const char *f, va_list l) {
31: int r=_vsnprintf(b, --s, f, l);
32: b[s]=0;
33: return r;
34: }
35: int __snprintf(char *b, size_t s, const char *f, ...) {
36: va_list l;
37: va_start(l, f);
38: int r=__vsnprintf(b, s, f, l);
39: va_end(l);
40: return r;
41: }
42:
43: #endif
1.2 paf 44:
1.18 paf 45:
1.28 paf 46: char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) {
1.34 paf 47: void *result;
48: size_t size;
1.35 paf 49: return file_read(pool, file_spec, result, size, true,
50: fail_on_read_problem)?(char *)result:0;
1.34 paf 51: }
52: bool file_read(Pool& pool, const String& file_spec,
1.44 paf 53: void*& data, size_t& read_size, bool as_text,
54: bool fail_on_read_problem,
55: size_t offset, size_t limit) {
56: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.33 paf 57: int f;
1.2 paf 58: struct stat finfo;
1.33 paf 59:
60: // first open, next stat:
1.45 paf 61: // directory update of NTFS hard links performed on open.
1.33 paf 62: // ex:
63: // a.html:^test[] and b.html hardlink to a.html
64: // user inserts ! before ^test in a.html
65: // directory entry of b.html in NTFS not updated at once,
1.35 paf 66: // they delay update till open, so we would receive "!^test[" string
67: // if would do stat, next open.
1.34 paf 68: if(
69: (f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 &&
70: stat(fname, &finfo)==0) {
1.2 paf 71: /*if(exclusive)
72: flock(f, LOCK_EX);*/
1.44 paf 73: size_t max_size=limit?min(offset+limit, finfo.st_size)-offset:finfo.st_size;
1.47 paf 74: if(!max_size) { // eof
75: data=0;
76: read_size=0;
77: return true;
78: }
1.44 paf 79: data=pool.malloc(max_size+(as_text?1:0));
1.45 paf 80: if(offset)
81: lseek(f, offset, SEEK_SET);
1.44 paf 82: read_size=read(f, data, max_size);
1.2 paf 83: /*if(exclusive)
84: flock(f, LOCK_UN);*/
85: close(f);
1.32 paf 86:
1.44 paf 87: if(read_size>=0 && read_size<=max_size) {
1.34 paf 88: if(as_text)
1.46 paf 89: ((char*&)data)[read_size]=0;
1.34 paf 90: } else
1.33 paf 91: PTHROW(0, 0,
92: &file_spec,
1.44 paf 93: "read failed: actually read %d bytes count not in [0..%lu] valid range",
94: read_size, (unsigned long)max_size); //never
1.32 paf 95:
1.34 paf 96: return true;//prepare_config(result, remove_empty_lines);
1.2 paf 97: }
1.4 paf 98: if(fail_on_read_problem)
1.33 paf 99: PTHROW(0, 0,
100: &file_spec,
1.54 parser 101: "read failed: %s (%d), actual filename '%s'",
102: strerror(errno), errno, fname);
1.34 paf 103: return false;
1.8 paf 104: }
105:
1.18 paf 106: void file_write(Pool& pool,
1.28 paf 107: const String& file_spec,
1.34 paf 108: const void *data, size_t size,
1.33 paf 109: bool as_text/*,
1.20 paf 110: bool exclusive*/) {
1.44 paf 111: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.28 paf 112: int f;
1.50 paf 113: if(access(fname, W_OK)!=0) {/*no*/
114: size_t pos_after=1;
115: int pos_before;
116: while((pos_before=file_spec.pos("/", 1, pos_after))>=0) {
117: mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_NAME), 0775);
118: pos_after=pos_before+1;
119: }
120:
1.33 paf 121: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 122: close(f);
123: }
124: if(access(fname, R_OK|W_OK)==0) {
1.34 paf 125: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 126: #ifdef WIN32
1.28 paf 127: |O_TRUNC
1.18 paf 128: #endif
1.28 paf 129: ;
1.33 paf 130: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 131: /*if(exclusive)
132: flock(f, LOCK_EX);*/
133:
1.33 paf 134: if(size) write(f, data, size);
1.18 paf 135: #ifndef WIN32
1.33 paf 136: ftruncate(f, size);
1.18 paf 137: #endif
1.28 paf 138: /*if(exclusive)
139: flock(f, LOCK_UN);*/
140: close(f);
141: return;
1.18 paf 142: }
143: }
1.33 paf 144: PTHROW(0, 0,
145: &file_spec,
1.54 parser 146: "write failed: %s (%d), actual filename '%s'",
147: strerror(errno), errno, fname);
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) {
1.54 parser 158: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
159: if(unlink(fname)!=0)
1.33 paf 160: PTHROW(0, 0,
161: &file_spec,
1.54 parser 162: "unlink failed: %s (%d), actual filename '%s'",
163: strerror(errno), errno, fname);
1.50 paf 164:
165: rmdir(file_spec, 1);
1.31 paf 166: }
167:
1.51 paf 168:
169: static bool entry_readable(const String& file_spec, bool need_dir) {
170: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
171: struct stat finfo;
172: if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) {
173: bool is_dir=(bool)(finfo.st_mode&S_IFDIR);
174: return is_dir==need_dir;
175: }
176: return false;
177: }
1.31 paf 178: bool file_readable(const String& file_spec) {
1.51 paf 179: return entry_readable(file_spec, false);
180: }
181: bool dir_readable(const String& file_spec) {
182: return entry_readable(file_spec, true);
1.43 paf 183: }
184: bool file_executable(const String& file_spec) {
185: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 paf 186: }
187:
188: size_t file_size(const String& file_spec) {
189: Pool& pool=file_spec.pool();
190: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
191: struct stat finfo;
192: if(stat(fname, &finfo)!=0)
193: PTHROW(0, 0,
194: &file_spec,
1.54 parser 195: "getting file size failed: %s (%d), real filename '%s'",
196: strerror(errno), errno, fname);
1.44 paf 197: return finfo.st_size;
1.18 paf 198: }
199:
1.8 paf 200: char *getrow(char **row_ref, char delim) {
201: char *result=*row_ref;
202: if(result) {
203: *row_ref=strchr(result, delim);
204: if(*row_ref)
205: *((*row_ref)++)=0;
206: else if(!*result)
207: return 0;
208: }
209: return result;
210: }
211:
1.23 paf 212: char *lsplit(char *string, char delim) {
213: if(string) {
214: char *v=strchr(string, delim);
1.8 paf 215: if(v) {
216: *v=0;
217: return v+1;
218: }
219: }
220: return 0;
221: }
222:
223: char *lsplit(char **string_ref, char delim) {
224: char *result=*string_ref;
225: char *next=lsplit(*string_ref, delim);
226: *string_ref=next;
227: return result;
1.9 paf 228: }
229:
230: char *rsplit(char *string, char delim) {
1.18 paf 231: if(string) {
1.9 paf 232: char *v=strrchr(string, delim);
1.18 paf 233: if(v) {
1.9 paf 234: *v=0;
235: return v+1;
236: }
237: }
238: return NULL;
1.10 paf 239: }
240:
1.37 paf 241: /// @todo less stupid type detection
1.10 paf 242: char *format(Pool& pool, double value, char *fmt) {
243: char *result=(char *)pool.malloc(MAX_NUMBER);
244: if(fmt)
245: if(strpbrk(fmt, "diouxX"))
246: if(strpbrk(fmt, "ouxX"))
1.33 paf 247: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 248: else
1.33 paf 249: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 250: else
251: snprintf(result, MAX_NUMBER, fmt, value);
252: else
1.33 paf 253: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 254:
255: return result;
1.12 paf 256: }
257:
1.36 paf 258: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 259: #ifdef WIN32
260: do{
261: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
262: if(chunk_written<=0)
263: break;
264: size-=chunk_written;
1.36 paf 265: buf=((const char*)buf)+chunk_written;
1.12 paf 266: } while(size>0);
267:
268: return size;
269: #else
1.13 paf 270: return fwrite(buf, 1, size, stdout);
1.12 paf 271: #endif
1.2 paf 272: }
1.14 paf 273:
274: const char *unescape_chars(Pool& pool, const char *cp, int len) {
275: char *s=(char *)pool.malloc(len + 1);
276: enum EscapeState {
1.33 paf 277: EscapeRest,
278: EscapeFirst,
1.14 paf 279: EscapeSecond
280: } escapeState=EscapeRest;
281: int escapedValue=0;
282: int srcPos=0;
283: int dstPos=0;
284: while(srcPos < len) {
285: int ch=cp[srcPos];
286: switch(escapeState) {
287: case EscapeRest:
288: if(ch=='%') {
289: escapeState=EscapeFirst;
290: } else if(ch=='+') {
291: s[dstPos++]=' ';
292: } else {
293: s[dstPos++]=ch;
294: }
295: break;
296: case EscapeFirst:
297: escapedValue=hex_value[ch] << 4;
298: escapeState=EscapeSecond;
299: break;
300: case EscapeSecond:
301: escapedValue +=hex_value[ch];
302: s[dstPos++]=escapedValue;
303: escapeState=EscapeRest;
304: break;
305: }
306: srcPos++;
307: }
308: s[dstPos]=0;
309: return s;
310: }
311:
1.52 paf 312: /// used by attributed_meaning_to_string / append_attribute_subattribute
1.40 paf 313: struct Attributed_meaning_info {
1.52 paf 314: String *header; // header line being constructed
315: String::Untaint_lang lang; // language in which to append to that line
1.40 paf 316: };
1.17 paf 317: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 318: void *info) {
319: if(akey==VALUE_NAME)
320: return;
321:
1.40 paf 322: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
323:
1.14 paf 324: // ...; charset=windows1251
1.48 paf 325: *ami.header << "; ";
1.40 paf 326: ami.header->append(akey, ami.lang, true);
1.48 paf 327: *ami.header << "=";
328: ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true);
1.14 paf 329: }
1.49 paf 330: const String& attributed_meaning_to_string(Value& meaning,
331: String::Untaint_lang lang) {
1.20 paf 332: String &result=*new(meaning.pool()) String(meaning.pool());
333: if(Hash *hash=meaning.get_hash()) {
1.14 paf 334: // $value(value) $subattribute(subattribute value)
335: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 336: result.append(value->as_string(), lang, true);
1.14 paf 337:
1.40 paf 338: Attributed_meaning_info attributed_meaning_info={
1.52 paf 339: &result,
340: lang
1.40 paf 341: };
342: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 343: } else // result value
1.40 paf 344: result.append(meaning.as_string(), lang, true);
1.14 paf 345:
346: return result;
1.24 paf 347: }
348:
349: #ifdef WIN32
350: void back_slashes_to_slashes(char *s) {
351: if(s)
352: for(; *s; s++)
353: if(*s=='\\')
354: *s='/';
355: }
1.42 paf 356: /*
357: void slashes_to_back_slashes(char *s) {
358: if(s)
359: for(; *s; s++)
360: if(*s=='/')
361: *s='\\';
362: }
363: */
1.24 paf 364: #endif
1.41 paf 365:
366: bool StrEqNc(const char *s1, const char *s2, bool strict) {
367: while(true) {
368: if(!(*s1)) {
369: if(!(*s2))
370: return true;
371: else
372: return !strict;
373: } else if(!(*s2))
374: return !strict;
375: if(isalpha(*s1)) {
376: if(tolower(*s1) !=tolower(*s2))
377: return false;
378: } else if((*s1) !=(*s2))
379: return false;
380: s1++;
381: s2++;
382: }
1.48 paf 383: }
384:
385: char *unquote(char*& current, char stop_at) {
386: char *result=current;
387: char *dest=current;
388: // skip leading WS
389: while(*current==' ' || *current=='\t')
390: current++;
391: if(!*current)
392: return current=0;
393:
394: bool quoted=*current=='"';
395: if(quoted)
396: current++;
397:
398: for(; *current; ) {
399: if(quoted)
400: switch(*current) {
401: case '\\': // "...\c
402: if(current[1])
403: current++;
404: break;
405: case '"':
406: current++;
407: goto break2;
408: }
409: else
410: if(*current==stop_at)
411: break;
412:
413: *dest++=*current++;
414: }
415: break2:
416: if(*current)
417: current++; // skip 'stop_at'
418: *dest=0;
419: return result;
1.41 paf 420: }
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