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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)
1.5 paf 7:
1.18 ! paf 8: $Id: pa_common.C,v 1.17 2001/03/19 17:56:27 paf Exp $
1.1 paf 9: */
10:
11: #ifdef HAVE_CONFIG_H
12: # include "pa_config.h"
13: #endif
14:
1.2 paf 15: #include <fcntl.h>
16: #include <sys/types.h>
17: #include <sys/stat.h>
18: #include <io.h>
1.1 paf 19: #include <stdio.h>
1.8 paf 20: #include <string.h>
1.1 paf 21:
22: #include "pa_common.h"
1.2 paf 23: #include "pa_types.h"
1.4 paf 24: #include "pa_exception.h"
1.14 paf 25: #include "pa_pool.h"
26: #include "pa_globals.h"
27: #include "pa_value.h"
28: #include "pa_hash.h"
29: #include "pa_string.h"
1.1 paf 30:
31: #ifdef WIN32
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:
! 49: #ifdef WIN32
! 50:
! 51: void flock(int fd, int operation) {
! 52: lseek(fd, 0, SEEK_SET);
! 53: while(_locking(fd, operation, 1)!=0);
! 54: lseek(fd, 0, SEEK_SET);
! 55: }
! 56:
! 57: #endif
! 58:
! 59: /// @todo define it
! 60: #ifdef SUN
! 61:
! 62: void flock(int fd, int operation) {
! 63: lseek(fd, 0, SEEK_SET);
! 64: lockf(fd, operation, 1);
! 65: lseek(fd, 0, SEEK_SET);
! 66: }
! 67: #endif
! 68:
! 69: void lock(FILE *f, long position) {
! 70: flock(fileno(f), LOCK_EX);
! 71: }
! 72: void unlock(FILE *f) {
! 73: flock(fileno(f), LOCK_UN);
! 74: }
! 75:
! 76:
1.7 paf 77: char *file_read(Pool& pool, const char *fname, bool fail_on_read_problem) {
1.2 paf 78: int f;
79: struct stat finfo;
1.8 paf 80: if(fname && !stat(fname,&finfo) &&(f=open(fname,O_RDONLY
1.2 paf 81: #ifdef WIN32
82: |O_TEXT
83: #endif
1.8 paf 84: ))>=0) {
1.2 paf 85: /*if(exclusive)
86: flock(f, LOCK_EX);*/
87:
1.10 paf 88: char *result=(char *)pool.malloc(finfo.st_size+1);
1.2 paf 89: int read_size=read(f,result,finfo.st_size);
90: if(read_size>=0 && read_size<=finfo.st_size)
91: result[read_size]='\0';
92: /*if(exclusive)
93: flock(f, LOCK_UN);*/
94: close(f);
95: return result;//prepare_config(result, remove_empty_lines);
96: }
1.4 paf 97: if(fail_on_read_problem)
1.11 paf 98: PTHROW(0,0,
1.4 paf 99: 0,
100: "use: can not read '%s' file", fname);
1.8 paf 101: return 0;
102: }
103:
1.18 ! paf 104: void file_write(Pool& pool,
! 105: const char *fname,
! 106: const char *data, size_t size,
! 107: bool exclusive) {
! 108: if(fname) {
! 109: int f;
! 110: if(access(fname, F_OK)!=0) {/*no*/
! 111: if((f=open(fname,O_WRONLY|O_CREAT|_O_BINARY,0666))>0)
! 112: close(f);
! 113: }
! 114: if(access(fname, R_OK|W_OK)==0) {
! 115: if((f=open(fname,O_RDWR|_O_BINARY
! 116: #ifdef WIN32
! 117: |O_TRUNC
! 118: #endif
! 119: ,0666))>=0) {
! 120: if(exclusive)
! 121: flock(f, LOCK_EX);
! 122:
! 123: if(size) write(f,data,size);
! 124: #ifndef WIN32
! 125: ftruncate(f,size);
! 126: #endif
! 127: if(exclusive)
! 128: flock(f, LOCK_UN);
! 129: close(f);
! 130: return;
! 131: }
! 132: }
! 133: }
! 134: if(fname)
! 135: PTHROW(0, 0,
! 136: 0,
! 137: "file_write('%s'): %s (#%d)",
! 138: fname, strerror(errno), errno);
! 139: else
! 140: PTHROW(0, 0,
! 141: 0,
! 142: "file_write: no filename specified");
! 143: }
! 144:
1.8 paf 145: char *getrow(char **row_ref, char delim) {
146: char *result=*row_ref;
147: if(result) {
148: *row_ref=strchr(result, delim);
149: if(*row_ref)
150: *((*row_ref)++)=0;
151: else if(!*result)
152: return 0;
153: }
154: return result;
155: }
156:
157: char *lsplit(char *string_ref, char delim) {
158: if(string_ref) {
159: char *v=strchr(string_ref, delim);
160: if(v) {
161: *v=0;
162: return v+1;
163: }
164: }
165: return 0;
166: }
167:
168: char *lsplit(char **string_ref, char delim) {
169: char *result=*string_ref;
170: char *next=lsplit(*string_ref, delim);
171: *string_ref=next;
172: return result;
1.9 paf 173: }
174:
175: char *rsplit(char *string, char delim) {
1.18 ! paf 176: if(string) {
1.9 paf 177: char *v=strrchr(string, delim);
1.18 ! paf 178: if(v) {
1.9 paf 179: *v=0;
180: return v+1;
181: }
182: }
183: return NULL;
1.10 paf 184: }
185:
186: char *format(Pool& pool, double value, char *fmt) {
187: char *result=(char *)pool.malloc(MAX_NUMBER);
188: if(fmt)
189: if(strpbrk(fmt, "diouxX"))
190: if(strpbrk(fmt, "ouxX"))
1.18 ! paf 191: snprintf(result, MAX_NUMBER, fmt,(uint)value );
1.10 paf 192: else
1.18 ! paf 193: snprintf(result, MAX_NUMBER, fmt,(int)value );
1.10 paf 194: else
195: snprintf(result, MAX_NUMBER, fmt, value);
196: else
1.18 ! paf 197: snprintf(result, MAX_NUMBER, "%d",(int)value);
1.10 paf 198:
199: return result;
1.12 paf 200: }
201:
1.13 paf 202: size_t stdout_write(const char *buf, size_t size) {
1.12 paf 203: #ifdef WIN32
204: do{
205: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
206: if(chunk_written<=0)
207: break;
208: size-=chunk_written;
209: buf+=chunk_written;
210: } while(size>0);
211:
212: return size;
213: #else
1.13 paf 214: return fwrite(buf, 1, size, stdout);
1.12 paf 215: #endif
1.2 paf 216: }
1.14 paf 217:
218: const char *unescape_chars(Pool& pool, const char *cp, int len) {
219: char *s=(char *)pool.malloc(len + 1);
220: enum EscapeState {
221: EscapeRest,
222: EscapeFirst,
223: EscapeSecond
224: } escapeState=EscapeRest;
225: int escapedValue=0;
226: int srcPos=0;
227: int dstPos=0;
228: while(srcPos < len) {
229: int ch=cp[srcPos];
230: switch(escapeState) {
231: case EscapeRest:
232: if(ch=='%') {
233: escapeState=EscapeFirst;
234: } else if(ch=='+') {
235: s[dstPos++]=' ';
236: } else {
237: s[dstPos++]=ch;
238: }
239: break;
240: case EscapeFirst:
241: escapedValue=hex_value[ch] << 4;
242: escapeState=EscapeSecond;
243: break;
244: case EscapeSecond:
245: escapedValue +=hex_value[ch];
246: s[dstPos++]=escapedValue;
247: escapeState=EscapeRest;
248: break;
249: }
250: srcPos++;
251: }
252: s[dstPos]=0;
253: return s;
254: }
255:
1.17 paf 256: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 257: void *info) {
258: if(akey==VALUE_NAME)
259: return;
260:
261: // ...; charset=windows1251
262: String *string=static_cast<String *>(info);
263: string->APPEND_CONST("; ");
264: string->append(akey, String::Untaint_lang::HEADER, true);
265: string->APPEND_CONST("=");
266: string->append(static_cast<Value *>(avalue)->as_string(),
267: String::Untaint_lang::HEADER, true);
268: }
269: const String& attributed_meaning_string(Value *meaning) {
270: String &result=*new(meaning->pool()) String(meaning->pool());
271: if(Hash *hash=meaning->get_hash()) {
272: // $value(value) $subattribute(subattribute value)
273: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
274: result.append(value->as_string(), String::Untaint_lang::HEADER, true);
275:
276: hash->foreach(append_attribute_subattribute, &result);
277: } else // result value
278: result.append(meaning->as_string(), String::Untaint_lang::HEADER, true);
279:
280: return result;
281: }