Annotation of parser3/src/main/pa_common.C, revision 1.44
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:
1.44 ! paf 9: $Id: pa_common.C,v 1.43 2001/04/10 07:40:50 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,
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:
63: // directory update of NTFS symbolic links performed on open.
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;
! 76: data=pool.malloc(max_size+(as_text?1:0));
! 77: read_size=read(f, data, max_size);
1.2 paf 78: /*if(exclusive)
79: flock(f, LOCK_UN);*/
80: close(f);
1.32 paf 81:
1.44 ! paf 82: if(read_size>=0 && read_size<=max_size) {
1.34 paf 83: if(as_text)
1.44 ! paf 84: ((char *)data)[read_size]=0;
1.34 paf 85: } else
1.33 paf 86: PTHROW(0, 0,
87: &file_spec,
1.44 ! paf 88: "read failed: actually read %d bytes count not in [0..%lu] valid range",
! 89: read_size, (unsigned long)max_size); //never
1.32 paf 90:
1.34 paf 91: return true;//prepare_config(result, remove_empty_lines);
1.2 paf 92: }
1.4 paf 93: if(fail_on_read_problem)
1.33 paf 94: PTHROW(0, 0,
95: &file_spec,
1.29 paf 96: "read failed: %s (#%d)", strerror(errno), errno);
1.34 paf 97: return false;
1.8 paf 98: }
99:
1.38 paf 100: /// @test mkdirs
1.18 paf 101: void file_write(Pool& pool,
1.28 paf 102: const String& file_spec,
1.34 paf 103: const void *data, size_t size,
1.33 paf 104: bool as_text/*,
1.20 paf 105: bool exclusive*/) {
1.44 ! paf 106: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.28 paf 107: int f;
108: if(access(fname, F_OK)!=0) {/*no*/
1.33 paf 109: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 110: close(f);
111: }
112: if(access(fname, R_OK|W_OK)==0) {
1.34 paf 113: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 114: #ifdef WIN32
1.28 paf 115: |O_TRUNC
1.18 paf 116: #endif
1.28 paf 117: ;
1.33 paf 118: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 119: /*if(exclusive)
120: flock(f, LOCK_EX);*/
121:
1.33 paf 122: if(size) write(f, data, size);
1.18 paf 123: #ifndef WIN32
1.33 paf 124: ftruncate(f, size);
1.18 paf 125: #endif
1.28 paf 126: /*if(exclusive)
127: flock(f, LOCK_UN);*/
128: close(f);
129: return;
1.18 paf 130: }
131: }
1.33 paf 132: PTHROW(0, 0,
133: &file_spec,
1.29 paf 134: "write failed: %s (#%d)", strerror(errno), errno);
1.30 paf 135: }
136:
137: void file_delete(Pool& pool, const String& file_spec) {
1.39 paf 138: if(unlink(file_spec.cstr(String::UL_FILE_NAME))!=0)
1.33 paf 139: PTHROW(0, 0,
140: &file_spec,
1.30 paf 141: "unlink failed: %s (#%d)", strerror(errno), errno);
1.31 paf 142: }
143:
144: bool file_readable(const String& file_spec) {
1.39 paf 145: return access(file_spec.cstr(String::UL_FILE_NAME), R_OK)==0;
1.43 paf 146: }
147: bool file_executable(const String& file_spec) {
148: return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0;
1.44 ! paf 149: }
! 150:
! 151: size_t file_size(const String& file_spec) {
! 152: Pool& pool=file_spec.pool();
! 153: const char *fname=file_spec.cstr(String::UL_FILE_NAME);
! 154: struct stat finfo;
! 155: if(stat(fname, &finfo)!=0)
! 156: PTHROW(0, 0,
! 157: &file_spec,
! 158: "write failed: %s (#%d)", strerror(errno), errno);
! 159: return finfo.st_size;
1.18 paf 160: }
161:
1.8 paf 162: char *getrow(char **row_ref, char delim) {
163: char *result=*row_ref;
164: if(result) {
165: *row_ref=strchr(result, delim);
166: if(*row_ref)
167: *((*row_ref)++)=0;
168: else if(!*result)
169: return 0;
170: }
171: return result;
172: }
173:
1.23 paf 174: char *lsplit(char *string, char delim) {
175: if(string) {
176: char *v=strchr(string, delim);
1.8 paf 177: if(v) {
178: *v=0;
179: return v+1;
180: }
181: }
182: return 0;
183: }
184:
185: char *lsplit(char **string_ref, char delim) {
186: char *result=*string_ref;
187: char *next=lsplit(*string_ref, delim);
188: *string_ref=next;
189: return result;
1.9 paf 190: }
191:
192: char *rsplit(char *string, char delim) {
1.18 paf 193: if(string) {
1.9 paf 194: char *v=strrchr(string, delim);
1.18 paf 195: if(v) {
1.9 paf 196: *v=0;
197: return v+1;
198: }
199: }
200: return NULL;
1.10 paf 201: }
202:
1.37 paf 203: /// @todo less stupid type detection
1.10 paf 204: char *format(Pool& pool, double value, char *fmt) {
205: char *result=(char *)pool.malloc(MAX_NUMBER);
206: if(fmt)
207: if(strpbrk(fmt, "diouxX"))
208: if(strpbrk(fmt, "ouxX"))
1.33 paf 209: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 210: else
1.33 paf 211: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 212: else
213: snprintf(result, MAX_NUMBER, fmt, value);
214: else
1.33 paf 215: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 216:
217: return result;
1.12 paf 218: }
219:
1.36 paf 220: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 221: #ifdef WIN32
222: do{
223: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
224: if(chunk_written<=0)
225: break;
226: size-=chunk_written;
1.36 paf 227: buf=((const char*)buf)+chunk_written;
1.12 paf 228: } while(size>0);
229:
230: return size;
231: #else
1.13 paf 232: return fwrite(buf, 1, size, stdout);
1.12 paf 233: #endif
1.2 paf 234: }
1.14 paf 235:
236: const char *unescape_chars(Pool& pool, const char *cp, int len) {
237: char *s=(char *)pool.malloc(len + 1);
238: enum EscapeState {
1.33 paf 239: EscapeRest,
240: EscapeFirst,
1.14 paf 241: EscapeSecond
242: } escapeState=EscapeRest;
243: int escapedValue=0;
244: int srcPos=0;
245: int dstPos=0;
246: while(srcPos < len) {
247: int ch=cp[srcPos];
248: switch(escapeState) {
249: case EscapeRest:
250: if(ch=='%') {
251: escapeState=EscapeFirst;
252: } else if(ch=='+') {
253: s[dstPos++]=' ';
254: } else {
255: s[dstPos++]=ch;
256: }
257: break;
258: case EscapeFirst:
259: escapedValue=hex_value[ch] << 4;
260: escapeState=EscapeSecond;
261: break;
262: case EscapeSecond:
263: escapedValue +=hex_value[ch];
264: s[dstPos++]=escapedValue;
265: escapeState=EscapeRest;
266: break;
267: }
268: srcPos++;
269: }
270: s[dstPos]=0;
271: return s;
272: }
273:
1.40 paf 274: struct Attributed_meaning_info {
275: String::Untaint_lang lang;
276: String *header;
277: };
1.17 paf 278: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 279: void *info) {
280: if(akey==VALUE_NAME)
281: return;
282:
1.40 paf 283: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
284:
1.14 paf 285: // ...; charset=windows1251
1.40 paf 286: if(ami.header->size())
287: ami.header->APPEND_CONST("; ");
288: ami.header->append(akey, ami.lang, true);
289: ami.header->APPEND_CONST("=");
290: ami.header->append(static_cast<Value *>(avalue)->as_string(),
291: ami.lang, true);
1.14 paf 292: }
1.40 paf 293: const String& attributed_meaning_to_string(Value& meaning, String::Untaint_lang lang) {
1.20 paf 294: String &result=*new(meaning.pool()) String(meaning.pool());
295: if(Hash *hash=meaning.get_hash()) {
1.14 paf 296: // $value(value) $subattribute(subattribute value)
297: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 paf 298: result.append(value->as_string(), lang, true);
1.14 paf 299:
1.40 paf 300: Attributed_meaning_info attributed_meaning_info={
301: lang,
302: &result
303: };
304: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 305: } else // result value
1.40 paf 306: result.append(meaning.as_string(), lang, true);
1.14 paf 307:
308: return result;
1.24 paf 309: }
310:
311: #ifdef WIN32
312: void back_slashes_to_slashes(char *s) {
313: if(s)
314: for(; *s; s++)
315: if(*s=='\\')
316: *s='/';
317: }
1.42 paf 318: /*
319: void slashes_to_back_slashes(char *s) {
320: if(s)
321: for(; *s; s++)
322: if(*s=='/')
323: *s='\\';
324: }
325: */
1.24 paf 326: #endif
1.41 paf 327:
328: bool StrEqNc(const char *s1, const char *s2, bool strict) {
329: while(true) {
330: if(!(*s1)) {
331: if(!(*s2))
332: return true;
333: else
334: return !strict;
335: } else if(!(*s2))
336: return !strict;
337: if(isalpha(*s1)) {
338: if(tolower(*s1) !=tolower(*s2))
339: return false;
340: } else if((*s1) !=(*s2))
341: return false;
342: s1++;
343: s2++;
344: }
345: }
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