Annotation of parser3/src/main/pa_common.C, revision 1.46.2.1
1.26 paf 1:
1.15 paf 2: /** @file
1.16 paf 3: Parser: commonly functions.
4:
1.8 paf 5: Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)
1.16 paf 6:
1.8 paf 7: Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)
1.5 paf 8:
1.46.2.1! paf 9: $Id: pa_common.C,v 1.46 2001/04/11 08:36:19 paf Exp $
1.1 paf 10: */
11:
1.22 paf 12: #include "pa_config_includes.h"
1.1 paf 13: #include "pa_common.h"
1.2 paf 14: #include "pa_types.h"
1.4 paf 15: #include "pa_exception.h"
1.14 paf 16: #include "pa_pool.h"
17: #include "pa_globals.h"
18: #include "pa_value.h"
19: #include "pa_hash.h"
20: #include "pa_string.h"
1.46.2.1! paf 21:
! 22: #ifndef WIN32
! 23: # ifndef _O_TEXT
! 24: # define _O_TEXT 0
! 25: # endif
! 26: # ifndef _O_BINARY
! 27: # define _O_BINARY 0
! 28: # endif
! 29: #endif
1.1 paf 30:
1.22 paf 31: #if _MSC_VER
1.1 paf 32:
33: int __vsnprintf(char *b, size_t s, const char *f, va_list l) {
34: int r=_vsnprintf(b, --s, f, l);
35: b[s]=0;
36: return r;
37: }
38: int __snprintf(char *b, size_t s, const char *f, ...) {
39: va_list l;
40: va_start(l, f);
41: int r=__vsnprintf(b, s, f, l);
42: va_end(l);
43: return r;
44: }
45:
46: #endif
1.2 paf 47:
1.18 paf 48:
1.28 paf 49: char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) {
1.34 paf 50: void *result;
51: size_t size;
1.35 paf 52: return file_read(pool, file_spec, result, size, true,
53: fail_on_read_problem)?(char *)result:0;
1.34 paf 54: }
55: bool file_read(Pool& pool, const String& file_spec,
1.44 paf 56: void*& data, size_t& read_size, bool as_text,
57: bool fail_on_read_problem,
58: size_t offset, size_t limit) {
59: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.33 paf 60: int f;
1.2 paf 61: struct stat finfo;
1.33 paf 62:
63: // first open, next stat:
1.45 paf 64: // directory update of NTFS hard links performed on open.
1.33 paf 65: // ex:
66: // a.html:^test[] and b.html hardlink to a.html
67: // user inserts ! before ^test in a.html
68: // directory entry of b.html in NTFS not updated at once,
1.35 paf 69: // they delay update till open, so we would receive "!^test[" string
70: // if would do stat, next open.
1.34 paf 71: if(
72: (f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 &&
73: stat(fname, &finfo)==0) {
1.2 paf 74: /*if(exclusive)
75: flock(f, LOCK_EX);*/
1.44 paf 76: size_t max_size=limit?min(offset+limit, finfo.st_size)-offset:finfo.st_size;
77: data=pool.malloc(max_size+(as_text?1:0));
1.45 paf 78: if(offset)
79: lseek(f, offset, SEEK_SET);
1.44 paf 80: read_size=read(f, data, max_size);
1.2 paf 81: /*if(exclusive)
82: flock(f, LOCK_UN);*/
83: close(f);
1.32 paf 84:
1.44 paf 85: if(read_size>=0 && read_size<=max_size) {
1.34 paf 86: if(as_text)
1.46 paf 87: ((char*&)data)[read_size]=0;
1.34 paf 88: } else
1.33 paf 89: PTHROW(0, 0,
90: &file_spec,
1.44 paf 91: "read failed: actually read %d bytes count not in [0..%lu] valid range",
92: read_size, (unsigned long)max_size); //never
1.32 paf 93:
1.34 paf 94: return true;//prepare_config(result, remove_empty_lines);
1.2 paf 95: }
1.4 paf 96: if(fail_on_read_problem)
1.33 paf 97: PTHROW(0, 0,
98: &file_spec,
1.45 paf 99: "read failed: %s (%d)", strerror(errno), errno);
1.34 paf 100: return false;
1.8 paf 101: }
102:
1.38 paf 103: /// @test mkdirs
1.18 paf 104: void file_write(Pool& pool,
1.28 paf 105: const String& file_spec,
1.34 paf 106: const void *data, size_t size,
1.33 paf 107: bool as_text/*,
1.20 paf 108: bool exclusive*/) {
1.44 paf 109: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.28 paf 110: int f;
111: if(access(fname, F_OK)!=0) {/*no*/
1.33 paf 112: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 113: close(f);
114: }
115: if(access(fname, R_OK|W_OK)==0) {
1.34 paf 116: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 117: #ifdef WIN32
1.28 paf 118: |O_TRUNC
1.18 paf 119: #endif
1.28 paf 120: ;
1.33 paf 121: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 122: /*if(exclusive)
123: flock(f, LOCK_EX);*/
124:
1.33 paf 125: if(size) write(f, data, size);
1.18 paf 126: #ifndef WIN32
1.33 paf 127: ftruncate(f, size);
1.18 paf 128: #endif
1.28 paf 129: /*if(exclusive)
130: flock(f, LOCK_UN);*/
131: close(f);
132: return;
1.18 paf 133: }
134: }
1.33 paf 135: PTHROW(0, 0,
136: &file_spec,
1.45 paf 137: "write failed: %s (%d)", strerror(errno), errno);
1.30 paf 138: }
139:
140: void file_delete(Pool& pool, const String& file_spec) {
1.39 paf 141: if(unlink(file_spec.cstr(String::UL_FILE_NAME))!=0)
1.33 paf 142: PTHROW(0, 0,
143: &file_spec,
1.45 paf 144: "unlink failed: %s (%d)", strerror(errno), errno);
1.31 paf 145: }
146:
147: bool file_readable(const String& file_spec) {
1.39 paf 148: return access(file_spec.cstr(String::UL_FILE_NAME), R_OK)==0;
1.43 paf 149: }
150: bool file_executable(const String& file_spec) {
151: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 paf 152: }
153:
154: size_t file_size(const String& file_spec) {
155: Pool& pool=file_spec.pool();
156: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
157: struct stat finfo;
158: if(stat(fname, &finfo)!=0)
159: PTHROW(0, 0,
160: &file_spec,
1.45 paf 161: "write failed: %s (%d)", strerror(errno), errno);
1.44 paf 162: return finfo.st_size;
1.18 paf 163: }
164:
1.8 paf 165: char *getrow(char **row_ref, char delim) {
166: char *result=*row_ref;
167: if(result) {
168: *row_ref=strchr(result, delim);
169: if(*row_ref)
170: *((*row_ref)++)=0;
171: else if(!*result)
172: return 0;
173: }
174: return result;
175: }
176:
1.23 paf 177: char *lsplit(char *string, char delim) {
178: if(string) {
179: char *v=strchr(string, delim);
1.8 paf 180: if(v) {
181: *v=0;
182: return v+1;
183: }
184: }
185: return 0;
186: }
187:
188: char *lsplit(char **string_ref, char delim) {
189: char *result=*string_ref;
190: char *next=lsplit(*string_ref, delim);
191: *string_ref=next;
192: return result;
1.9 paf 193: }
194:
195: char *rsplit(char *string, char delim) {
1.18 paf 196: if(string) {
1.9 paf 197: char *v=strrchr(string, delim);
1.18 paf 198: if(v) {
1.9 paf 199: *v=0;
200: return v+1;
201: }
202: }
203: return NULL;
1.10 paf 204: }
205:
1.37 paf 206: /// @todo less stupid type detection
1.10 paf 207: char *format(Pool& pool, double value, char *fmt) {
208: char *result=(char *)pool.malloc(MAX_NUMBER);
209: if(fmt)
210: if(strpbrk(fmt, "diouxX"))
211: if(strpbrk(fmt, "ouxX"))
1.33 paf 212: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 213: else
1.33 paf 214: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 215: else
216: snprintf(result, MAX_NUMBER, fmt, value);
217: else
1.33 paf 218: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 219:
220: return result;
1.12 paf 221: }
222:
1.36 paf 223: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 224: #ifdef WIN32
225: do{
226: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
227: if(chunk_written<=0)
228: break;
229: size-=chunk_written;
1.36 paf 230: buf=((const char*)buf)+chunk_written;
1.12 paf 231: } while(size>0);
232:
233: return size;
234: #else
1.13 paf 235: return fwrite(buf, 1, size, stdout);
1.12 paf 236: #endif
1.2 paf 237: }
1.14 paf 238:
239: const char *unescape_chars(Pool& pool, const char *cp, int len) {
240: char *s=(char *)pool.malloc(len + 1);
241: enum EscapeState {
1.33 paf 242: EscapeRest,
243: EscapeFirst,
1.14 paf 244: EscapeSecond
245: } escapeState=EscapeRest;
246: int escapedValue=0;
247: int srcPos=0;
248: int dstPos=0;
249: while(srcPos < len) {
250: int ch=cp[srcPos];
251: switch(escapeState) {
252: case EscapeRest:
253: if(ch=='%') {
254: escapeState=EscapeFirst;
255: } else if(ch=='+') {
256: s[dstPos++]=' ';
257: } else {
258: s[dstPos++]=ch;
259: }
260: break;
261: case EscapeFirst:
262: escapedValue=hex_value[ch] << 4;
263: escapeState=EscapeSecond;
264: break;
265: case EscapeSecond:
266: escapedValue +=hex_value[ch];
267: s[dstPos++]=escapedValue;
268: escapeState=EscapeRest;
269: break;
270: }
271: srcPos++;
272: }
273: s[dstPos]=0;
274: return s;
275: }
276:
1.40 paf 277: struct Attributed_meaning_info {
278: String::Untaint_lang lang;
279: String *header;
280: };
1.17 paf 281: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 282: void *info) {
283: if(akey==VALUE_NAME)
284: return;
285:
1.40 paf 286: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
287:
1.14 paf 288: // ...; charset=windows1251
1.46 paf 289: ami.header->APPEND_CONST("; ");
1.40 paf 290: ami.header->append(akey, ami.lang, true);
291: ami.header->APPEND_CONST("=");
292: ami.header->append(static_cast<Value *>(avalue)->as_string(),
293: ami.lang, true);
1.14 paf 294: }
1.40 paf 295: const String& attributed_meaning_to_string(Value& meaning, String::Untaint_lang lang) {
1.20 paf 296: String &result=*new(meaning.pool()) String(meaning.pool());
297: if(Hash *hash=meaning.get_hash()) {
1.14 paf 298: // $value(value) $subattribute(subattribute value)
299: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 300: result.append(value->as_string(), lang, true);
1.14 paf 301:
1.40 paf 302: Attributed_meaning_info attributed_meaning_info={
303: lang,
304: &result
305: };
306: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 307: } else // result value
1.40 paf 308: result.append(meaning.as_string(), lang, true);
1.14 paf 309:
310: return result;
1.24 paf 311: }
312:
313: #ifdef WIN32
314: void back_slashes_to_slashes(char *s) {
315: if(s)
316: for(; *s; s++)
317: if(*s=='\\')
318: *s='/';
319: }
1.42 paf 320: /*
321: void slashes_to_back_slashes(char *s) {
322: if(s)
323: for(; *s; s++)
324: if(*s=='/')
325: *s='\\';
326: }
327: */
1.24 paf 328: #endif
1.41 paf 329:
330: bool StrEqNc(const char *s1, const char *s2, bool strict) {
331: while(true) {
332: if(!(*s1)) {
333: if(!(*s2))
334: return true;
335: else
336: return !strict;
337: } else if(!(*s2))
338: return !strict;
339: if(isalpha(*s1)) {
340: if(tolower(*s1) !=tolower(*s2))
341: return false;
342: } else if((*s1) !=(*s2))
343: return false;
344: s1++;
345: s2++;
346: }
347: }
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