Annotation of parser3/src/main/pa_common.C, revision 1.43
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:
1.43 ! paf 9: $Id: pa_common.C,v 1.42 2001/04/09 11:04:12 paf Exp $
1.1 paf 10: */
11:
1.22 paf 12: #include "pa_config_includes.h"
1.1 paf 13:
1.2 paf 14: #include <fcntl.h>
15: #include <sys/stat.h>
16: #include <io.h>
1.1 paf 17: #include <stdio.h>
1.20 paf 18: #include <errno.h>
1.41 paf 19: #include <ctype.h>
1.20 paf 20:
1.1 paf 21: #include "pa_common.h"
1.2 paf 22: #include "pa_types.h"
1.4 paf 23: #include "pa_exception.h"
1.14 paf 24: #include "pa_pool.h"
25: #include "pa_globals.h"
26: #include "pa_value.h"
27: #include "pa_hash.h"
28: #include "pa_string.h"
1.1 paf 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,
55: void*& data, size_t& size, bool as_text,
56: bool fail_on_read_problem) {
1.39 paf 57: char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.33 paf 58: int f;
1.2 paf 59: struct stat finfo;
1.33 paf 60:
61: // first open, next stat:
62: // directory update of NTFS symbolic links performed on open.
63: // ex:
64: // a.html:^test[] and b.html hardlink to a.html
65: // user inserts ! before ^test in a.html
66: // directory entry of b.html in NTFS not updated at once,
1.35 paf 67: // they delay update till open, so we would receive "!^test[" string
68: // if would do stat, next open.
1.34 paf 69: if(
70: (f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 &&
71: stat(fname, &finfo)==0) {
1.2 paf 72: /*if(exclusive)
73: flock(f, LOCK_EX);*/
1.34 paf 74: data=pool.malloc(finfo.st_size+(as_text?1:0));
75: size=read(f, data, finfo.st_size);
1.2 paf 76: /*if(exclusive)
77: flock(f, LOCK_UN);*/
78: close(f);
1.32 paf 79:
1.34 paf 80: if(size>=0 && size<=(size_t)finfo.st_size) {
81: if(as_text)
82: ((char *)data)[size]=0;
83: } else
1.33 paf 84: PTHROW(0, 0,
85: &file_spec,
86: "read failed: actually read %d bytes count not in [0..%ul] valid range",
1.35 paf 87: size, (unsigned long)finfo.st_size); //never
1.32 paf 88:
1.34 paf 89: return true;//prepare_config(result, remove_empty_lines);
1.2 paf 90: }
1.4 paf 91: if(fail_on_read_problem)
1.33 paf 92: PTHROW(0, 0,
93: &file_spec,
1.29 paf 94: "read failed: %s (#%d)", strerror(errno), errno);
1.34 paf 95: return false;
1.8 paf 96: }
97:
1.38 paf 98: /// @test mkdirs
1.18 paf 99: void file_write(Pool& pool,
1.28 paf 100: const String& file_spec,
1.34 paf 101: const void *data, size_t size,
1.33 paf 102: bool as_text/*,
1.20 paf 103: bool exclusive*/) {
1.39 paf 104: char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.28 paf 105: int f;
106: if(access(fname, F_OK)!=0) {/*no*/
1.33 paf 107: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 108: close(f);
109: }
110: if(access(fname, R_OK|W_OK)==0) {
1.34 paf 111: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 112: #ifdef WIN32
1.28 paf 113: |O_TRUNC
1.18 paf 114: #endif
1.28 paf 115: ;
1.33 paf 116: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 117: /*if(exclusive)
118: flock(f, LOCK_EX);*/
119:
1.33 paf 120: if(size) write(f, data, size);
1.18 paf 121: #ifndef WIN32
1.33 paf 122: ftruncate(f, size);
1.18 paf 123: #endif
1.28 paf 124: /*if(exclusive)
125: flock(f, LOCK_UN);*/
126: close(f);
127: return;
1.18 paf 128: }
129: }
1.33 paf 130: PTHROW(0, 0,
131: &file_spec,
1.29 paf 132: "write failed: %s (#%d)", strerror(errno), errno);
1.30 paf 133: }
134:
135: void file_delete(Pool& pool, const String& file_spec) {
1.39 paf 136: if(unlink(file_spec.cstr(String::UL_FILE_NAME))!=0)
1.33 paf 137: PTHROW(0, 0,
138: &file_spec,
1.30 paf 139: "unlink failed: %s (#%d)", strerror(errno), errno);
1.31 paf 140: }
141:
142: bool file_readable(const String& file_spec) {
1.39 paf 143: return access(file_spec.cstr(String::UL_FILE_NAME), R_OK)==0;
1.43 ! paf 144: }
! 145: bool file_executable(const String& file_spec) {
! 146: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.18 paf 147: }
148:
1.8 paf 149: char *getrow(char **row_ref, char delim) {
150: char *result=*row_ref;
151: if(result) {
152: *row_ref=strchr(result, delim);
153: if(*row_ref)
154: *((*row_ref)++)=0;
155: else if(!*result)
156: return 0;
157: }
158: return result;
159: }
160:
1.23 paf 161: char *lsplit(char *string, char delim) {
162: if(string) {
163: char *v=strchr(string, delim);
1.8 paf 164: if(v) {
165: *v=0;
166: return v+1;
167: }
168: }
169: return 0;
170: }
171:
172: char *lsplit(char **string_ref, char delim) {
173: char *result=*string_ref;
174: char *next=lsplit(*string_ref, delim);
175: *string_ref=next;
176: return result;
1.9 paf 177: }
178:
179: char *rsplit(char *string, char delim) {
1.18 paf 180: if(string) {
1.9 paf 181: char *v=strrchr(string, delim);
1.18 paf 182: if(v) {
1.9 paf 183: *v=0;
184: return v+1;
185: }
186: }
187: return NULL;
1.10 paf 188: }
189:
1.37 paf 190: /// @todo less stupid type detection
1.10 paf 191: char *format(Pool& pool, double value, char *fmt) {
192: char *result=(char *)pool.malloc(MAX_NUMBER);
193: if(fmt)
194: if(strpbrk(fmt, "diouxX"))
195: if(strpbrk(fmt, "ouxX"))
1.33 paf 196: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 197: else
1.33 paf 198: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 199: else
200: snprintf(result, MAX_NUMBER, fmt, value);
201: else
1.33 paf 202: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 203:
204: return result;
1.12 paf 205: }
206:
1.36 paf 207: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 208: #ifdef WIN32
209: do{
210: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
211: if(chunk_written<=0)
212: break;
213: size-=chunk_written;
1.36 paf 214: buf=((const char*)buf)+chunk_written;
1.12 paf 215: } while(size>0);
216:
217: return size;
218: #else
1.13 paf 219: return fwrite(buf, 1, size, stdout);
1.12 paf 220: #endif
1.2 paf 221: }
1.14 paf 222:
223: const char *unescape_chars(Pool& pool, const char *cp, int len) {
224: char *s=(char *)pool.malloc(len + 1);
225: enum EscapeState {
1.33 paf 226: EscapeRest,
227: EscapeFirst,
1.14 paf 228: EscapeSecond
229: } escapeState=EscapeRest;
230: int escapedValue=0;
231: int srcPos=0;
232: int dstPos=0;
233: while(srcPos < len) {
234: int ch=cp[srcPos];
235: switch(escapeState) {
236: case EscapeRest:
237: if(ch=='%') {
238: escapeState=EscapeFirst;
239: } else if(ch=='+') {
240: s[dstPos++]=' ';
241: } else {
242: s[dstPos++]=ch;
243: }
244: break;
245: case EscapeFirst:
246: escapedValue=hex_value[ch] << 4;
247: escapeState=EscapeSecond;
248: break;
249: case EscapeSecond:
250: escapedValue +=hex_value[ch];
251: s[dstPos++]=escapedValue;
252: escapeState=EscapeRest;
253: break;
254: }
255: srcPos++;
256: }
257: s[dstPos]=0;
258: return s;
259: }
260:
1.40 paf 261: struct Attributed_meaning_info {
262: String::Untaint_lang lang;
263: String *header;
264: };
1.17 paf 265: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 266: void *info) {
267: if(akey==VALUE_NAME)
268: return;
269:
1.40 paf 270: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
271:
1.14 paf 272: // ...; charset=windows1251
1.40 paf 273: if(ami.header->size())
274: ami.header->APPEND_CONST("; ");
275: ami.header->append(akey, ami.lang, true);
276: ami.header->APPEND_CONST("=");
277: ami.header->append(static_cast<Value *>(avalue)->as_string(),
278: ami.lang, true);
1.14 paf 279: }
1.40 paf 280: const String& attributed_meaning_to_string(Value& meaning, String::Untaint_lang lang) {
1.20 paf 281: String &result=*new(meaning.pool()) String(meaning.pool());
282: if(Hash *hash=meaning.get_hash()) {
1.14 paf 283: // $value(value) $subattribute(subattribute value)
284: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 285: result.append(value->as_string(), lang, true);
1.14 paf 286:
1.40 paf 287: Attributed_meaning_info attributed_meaning_info={
288: lang,
289: &result
290: };
291: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 292: } else // result value
1.40 paf 293: result.append(meaning.as_string(), lang, true);
1.14 paf 294:
295: return result;
1.24 paf 296: }
297:
298: #ifdef WIN32
299: void back_slashes_to_slashes(char *s) {
300: if(s)
301: for(; *s; s++)
302: if(*s=='\\')
303: *s='/';
304: }
1.42 paf 305: /*
306: void slashes_to_back_slashes(char *s) {
307: if(s)
308: for(; *s; s++)
309: if(*s=='/')
310: *s='\\';
311: }
312: */
1.24 paf 313: #endif
1.41 paf 314:
315: bool StrEqNc(const char *s1, const char *s2, bool strict) {
316: while(true) {
317: if(!(*s1)) {
318: if(!(*s2))
319: return true;
320: else
321: return !strict;
322: } else if(!(*s2))
323: return !strict;
324: if(isalpha(*s1)) {
325: if(tolower(*s1) !=tolower(*s2))
326: return false;
327: } else if((*s1) !=(*s2))
328: return false;
329: s1++;
330: s2++;
331: }
332: }
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