Annotation of parser3/src/main/pa_common.C, revision 1.35
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:
1.35 ! paf 9: $Id: pa_common.C,v 1.34 2001/03/28 09:38:08 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>
19:
1.1 paf 20: #include "pa_common.h"
1.2 paf 21: #include "pa_types.h"
1.4 paf 22: #include "pa_exception.h"
1.14 paf 23: #include "pa_pool.h"
24: #include "pa_globals.h"
25: #include "pa_value.h"
26: #include "pa_hash.h"
27: #include "pa_string.h"
1.1 paf 28:
1.22 paf 29: #if _MSC_VER
1.1 paf 30:
31: int __vsnprintf(char *b, size_t s, const char *f, va_list l) {
32: int r=_vsnprintf(b, --s, f, l);
33: b[s]=0;
34: return r;
35: }
36: int __snprintf(char *b, size_t s, const char *f, ...) {
37: va_list l;
38: va_start(l, f);
39: int r=__vsnprintf(b, s, f, l);
40: va_end(l);
41: return r;
42: }
43:
44: #endif
1.2 paf 45:
1.18 paf 46:
1.28 paf 47: char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) {
1.34 paf 48: void *result;
49: size_t size;
1.35 ! paf 50: return file_read(pool, file_spec, result, size, true,
! 51: fail_on_read_problem)?(char *)result:0;
1.34 paf 52: }
53: bool file_read(Pool& pool, const String& file_spec,
54: void*& data, size_t& size, bool as_text,
55: bool fail_on_read_problem) {
1.33 paf 56: char *fname=file_spec.cstr();
57: int f;
1.2 paf 58: struct stat finfo;
1.33 paf 59:
60: // first open, next stat:
61: // directory update of NTFS symbolic links performed on open.
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);*/
1.34 paf 73: data=pool.malloc(finfo.st_size+(as_text?1:0));
74: size=read(f, data, finfo.st_size);
1.2 paf 75: /*if(exclusive)
76: flock(f, LOCK_UN);*/
77: close(f);
1.32 paf 78:
1.34 paf 79: if(size>=0 && size<=(size_t)finfo.st_size) {
80: if(as_text)
81: ((char *)data)[size]=0;
82: } else
1.33 paf 83: PTHROW(0, 0,
84: &file_spec,
85: "read failed: actually read %d bytes count not in [0..%ul] valid range",
1.35 ! paf 86: size, (unsigned long)finfo.st_size); //never
1.32 paf 87:
1.34 paf 88: return true;//prepare_config(result, remove_empty_lines);
1.2 paf 89: }
1.4 paf 90: if(fail_on_read_problem)
1.33 paf 91: PTHROW(0, 0,
92: &file_spec,
1.29 paf 93: "read failed: %s (#%d)", strerror(errno), errno);
1.34 paf 94: return false;
1.8 paf 95: }
96:
1.18 paf 97: void file_write(Pool& pool,
1.28 paf 98: const String& file_spec,
1.34 paf 99: const void *data, size_t size,
1.33 paf 100: bool as_text/*,
1.20 paf 101: bool exclusive*/) {
1.28 paf 102: char *fname=file_spec.cstr();
103: int f;
104: if(access(fname, F_OK)!=0) {/*no*/
1.33 paf 105: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 106: close(f);
107: }
108: if(access(fname, R_OK|W_OK)==0) {
1.34 paf 109: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 110: #ifdef WIN32
1.28 paf 111: |O_TRUNC
1.18 paf 112: #endif
1.28 paf 113: ;
1.33 paf 114: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 115: /*if(exclusive)
116: flock(f, LOCK_EX);*/
117:
1.33 paf 118: if(size) write(f, data, size);
1.18 paf 119: #ifndef WIN32
1.33 paf 120: ftruncate(f, size);
1.18 paf 121: #endif
1.28 paf 122: /*if(exclusive)
123: flock(f, LOCK_UN);*/
124: close(f);
125: return;
1.18 paf 126: }
127: }
1.33 paf 128: PTHROW(0, 0,
129: &file_spec,
1.29 paf 130: "write failed: %s (#%d)", strerror(errno), errno);
1.30 paf 131: }
132:
133: void file_delete(Pool& pool, const String& file_spec) {
134: if(unlink(file_spec.cstr())!=0)
1.33 paf 135: PTHROW(0, 0,
136: &file_spec,
1.30 paf 137: "unlink failed: %s (#%d)", strerror(errno), errno);
1.31 paf 138: }
139:
140: bool file_readable(const String& file_spec) {
141: return access(file_spec.cstr(), R_OK)==0;
1.18 paf 142: }
143:
1.8 paf 144: char *getrow(char **row_ref, char delim) {
145: char *result=*row_ref;
146: if(result) {
147: *row_ref=strchr(result, delim);
148: if(*row_ref)
149: *((*row_ref)++)=0;
150: else if(!*result)
151: return 0;
152: }
153: return result;
154: }
155:
1.23 paf 156: char *lsplit(char *string, char delim) {
157: if(string) {
158: char *v=strchr(string, delim);
1.8 paf 159: if(v) {
160: *v=0;
161: return v+1;
162: }
163: }
164: return 0;
165: }
166:
167: char *lsplit(char **string_ref, char delim) {
168: char *result=*string_ref;
169: char *next=lsplit(*string_ref, delim);
170: *string_ref=next;
171: return result;
1.9 paf 172: }
173:
174: char *rsplit(char *string, char delim) {
1.18 paf 175: if(string) {
1.9 paf 176: char *v=strrchr(string, delim);
1.18 paf 177: if(v) {
1.9 paf 178: *v=0;
179: return v+1;
180: }
181: }
182: return NULL;
1.10 paf 183: }
184:
185: char *format(Pool& pool, double value, char *fmt) {
186: char *result=(char *)pool.malloc(MAX_NUMBER);
187: if(fmt)
188: if(strpbrk(fmt, "diouxX"))
189: if(strpbrk(fmt, "ouxX"))
1.33 paf 190: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 191: else
1.33 paf 192: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 193: else
194: snprintf(result, MAX_NUMBER, fmt, value);
195: else
1.33 paf 196: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 197:
198: return result;
1.12 paf 199: }
200:
1.13 paf 201: size_t stdout_write(const char *buf, size_t size) {
1.12 paf 202: #ifdef WIN32
203: do{
204: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
205: if(chunk_written<=0)
206: break;
207: size-=chunk_written;
208: buf+=chunk_written;
209: } while(size>0);
210:
211: return size;
212: #else
1.13 paf 213: return fwrite(buf, 1, size, stdout);
1.12 paf 214: #endif
1.2 paf 215: }
1.14 paf 216:
217: const char *unescape_chars(Pool& pool, const char *cp, int len) {
218: char *s=(char *)pool.malloc(len + 1);
219: enum EscapeState {
1.33 paf 220: EscapeRest,
221: EscapeFirst,
1.14 paf 222: EscapeSecond
223: } escapeState=EscapeRest;
224: int escapedValue=0;
225: int srcPos=0;
226: int dstPos=0;
227: while(srcPos < len) {
228: int ch=cp[srcPos];
229: switch(escapeState) {
230: case EscapeRest:
231: if(ch=='%') {
232: escapeState=EscapeFirst;
233: } else if(ch=='+') {
234: s[dstPos++]=' ';
235: } else {
236: s[dstPos++]=ch;
237: }
238: break;
239: case EscapeFirst:
240: escapedValue=hex_value[ch] << 4;
241: escapeState=EscapeSecond;
242: break;
243: case EscapeSecond:
244: escapedValue +=hex_value[ch];
245: s[dstPos++]=escapedValue;
246: escapeState=EscapeRest;
247: break;
248: }
249: srcPos++;
250: }
251: s[dstPos]=0;
252: return s;
253: }
254:
1.17 paf 255: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 256: void *info) {
257: if(akey==VALUE_NAME)
258: return;
259:
260: // ...; charset=windows1251
261: String *string=static_cast<String *>(info);
262: string->APPEND_CONST("; ");
1.20 paf 263: string->append(akey, String::UL_HEADER, true);
1.14 paf 264: string->APPEND_CONST("=");
265: string->append(static_cast<Value *>(avalue)->as_string(),
1.20 paf 266: String::UL_HEADER, true);
1.14 paf 267: }
1.20 paf 268: const String& attributed_meaning_to_string(Value& meaning) {
269: String &result=*new(meaning.pool()) String(meaning.pool());
270: if(Hash *hash=meaning.get_hash()) {
1.14 paf 271: // $value(value) $subattribute(subattribute value)
272: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.20 paf 273: result.append(value->as_string(), String::UL_HEADER, true);
1.14 paf 274:
1.25 paf 275: hash->for_each(append_attribute_subattribute, &result);
1.14 paf 276: } else // result value
1.20 paf 277: result.append(meaning.as_string(), String::UL_HEADER, true);
1.14 paf 278:
279: return result;
1.24 paf 280: }
281:
282: #ifdef WIN32
283: void back_slashes_to_slashes(char *s) {
284: if(s)
285: for(; *s; s++)
286: if(*s=='\\')
287: *s='/';
288: }
289: #endif
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