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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:
1.32 ! paf 9: $Id: pa_common.C,v 1.31 2001/03/27 13:47:31 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) {
1.2 paf 48: int f;
49: struct stat finfo;
1.28 paf 50: char *fname=file_spec.cstr();
1.32 ! paf 51: if(!stat(fname,&finfo) &&(f=open(fname,O_RDONLY|_O_TEXT))>=0) {
1.2 paf 52: /*if(exclusive)
53: flock(f, LOCK_EX);*/
54:
1.10 paf 55: char *result=(char *)pool.malloc(finfo.st_size+1);
1.2 paf 56: int read_size=read(f,result,finfo.st_size);
57: /*if(exclusive)
58: flock(f, LOCK_UN);*/
59: close(f);
1.32 ! paf 60:
! 61: if(read_size>=0 && read_size<=finfo.st_size)
! 62: result[read_size]='\0';
! 63: else
! 64: PTHROW(0, 0,
! 65: &file_spec,
! 66: "read failed: actually read %d bytes count not in [0..%ul] valid range",
! 67: read_size, (unsigned long)finfo.st_size);
! 68:
1.2 paf 69: return result;//prepare_config(result, remove_empty_lines);
70: }
1.4 paf 71: if(fail_on_read_problem)
1.28 paf 72: PTHROW(0, 0,
73: &file_spec,
1.29 paf 74: "read failed: %s (#%d)", strerror(errno), errno);
1.8 paf 75: return 0;
76: }
77:
1.18 paf 78: void file_write(Pool& pool,
1.28 paf 79: const String& file_spec,
1.18 paf 80: const char *data, size_t size,
1.20 paf 81: bool as_text/*,
82: bool exclusive*/) {
1.28 paf 83: char *fname=file_spec.cstr();
84: int f;
85: if(access(fname, F_OK)!=0) {/*no*/
86: if((f=open(fname,O_WRONLY|O_CREAT|_O_BINARY,0666))>0)
87: close(f);
88: }
89: if(access(fname, R_OK|W_OK)==0) {
90: int mode=O_RDWR
1.18 paf 91: #ifdef WIN32
1.28 paf 92: |O_TRUNC
1.18 paf 93: #endif
1.28 paf 94: ;
95: mode|=as_text?_O_TEXT:_O_BINARY;
96: if((f=open(fname,mode,0666))>=0) {
97: /*if(exclusive)
98: flock(f, LOCK_EX);*/
99:
100: if(size) write(f,data,size);
1.18 paf 101: #ifndef WIN32
1.28 paf 102: ftruncate(f,size);
1.18 paf 103: #endif
1.28 paf 104: /*if(exclusive)
105: flock(f, LOCK_UN);*/
106: close(f);
107: return;
1.18 paf 108: }
109: }
1.28 paf 110: PTHROW(0, 0,
111: &file_spec,
1.29 paf 112: "write failed: %s (#%d)", strerror(errno), errno);
1.30 paf 113: }
114:
115: void file_delete(Pool& pool, const String& file_spec) {
116: if(unlink(file_spec.cstr())!=0)
117: PTHROW(0, 0,
118: &file_spec,
119: "unlink failed: %s (#%d)", strerror(errno), errno);
1.31 paf 120: }
121:
122: bool file_readable(const String& file_spec) {
123: return access(file_spec.cstr(), R_OK)==0;
1.18 paf 124: }
125:
1.8 paf 126: char *getrow(char **row_ref, char delim) {
127: char *result=*row_ref;
128: if(result) {
129: *row_ref=strchr(result, delim);
130: if(*row_ref)
131: *((*row_ref)++)=0;
132: else if(!*result)
133: return 0;
134: }
135: return result;
136: }
137:
1.23 paf 138: char *lsplit(char *string, char delim) {
139: if(string) {
140: char *v=strchr(string, delim);
1.8 paf 141: if(v) {
142: *v=0;
143: return v+1;
144: }
145: }
146: return 0;
147: }
148:
149: char *lsplit(char **string_ref, char delim) {
150: char *result=*string_ref;
151: char *next=lsplit(*string_ref, delim);
152: *string_ref=next;
153: return result;
1.9 paf 154: }
155:
156: char *rsplit(char *string, char delim) {
1.18 paf 157: if(string) {
1.9 paf 158: char *v=strrchr(string, delim);
1.18 paf 159: if(v) {
1.9 paf 160: *v=0;
161: return v+1;
162: }
163: }
164: return NULL;
1.10 paf 165: }
166:
167: char *format(Pool& pool, double value, char *fmt) {
168: char *result=(char *)pool.malloc(MAX_NUMBER);
169: if(fmt)
170: if(strpbrk(fmt, "diouxX"))
171: if(strpbrk(fmt, "ouxX"))
1.18 paf 172: snprintf(result, MAX_NUMBER, fmt,(uint)value );
1.10 paf 173: else
1.18 paf 174: snprintf(result, MAX_NUMBER, fmt,(int)value );
1.10 paf 175: else
176: snprintf(result, MAX_NUMBER, fmt, value);
177: else
1.18 paf 178: snprintf(result, MAX_NUMBER, "%d",(int)value);
1.10 paf 179:
180: return result;
1.12 paf 181: }
182:
1.13 paf 183: size_t stdout_write(const char *buf, size_t size) {
1.12 paf 184: #ifdef WIN32
185: do{
186: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
187: if(chunk_written<=0)
188: break;
189: size-=chunk_written;
190: buf+=chunk_written;
191: } while(size>0);
192:
193: return size;
194: #else
1.13 paf 195: return fwrite(buf, 1, size, stdout);
1.12 paf 196: #endif
1.2 paf 197: }
1.14 paf 198:
199: const char *unescape_chars(Pool& pool, const char *cp, int len) {
200: char *s=(char *)pool.malloc(len + 1);
201: enum EscapeState {
202: EscapeRest,
203: EscapeFirst,
204: EscapeSecond
205: } escapeState=EscapeRest;
206: int escapedValue=0;
207: int srcPos=0;
208: int dstPos=0;
209: while(srcPos < len) {
210: int ch=cp[srcPos];
211: switch(escapeState) {
212: case EscapeRest:
213: if(ch=='%') {
214: escapeState=EscapeFirst;
215: } else if(ch=='+') {
216: s[dstPos++]=' ';
217: } else {
218: s[dstPos++]=ch;
219: }
220: break;
221: case EscapeFirst:
222: escapedValue=hex_value[ch] << 4;
223: escapeState=EscapeSecond;
224: break;
225: case EscapeSecond:
226: escapedValue +=hex_value[ch];
227: s[dstPos++]=escapedValue;
228: escapeState=EscapeRest;
229: break;
230: }
231: srcPos++;
232: }
233: s[dstPos]=0;
234: return s;
235: }
236:
1.17 paf 237: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 238: void *info) {
239: if(akey==VALUE_NAME)
240: return;
241:
242: // ...; charset=windows1251
243: String *string=static_cast<String *>(info);
244: string->APPEND_CONST("; ");
1.20 paf 245: string->append(akey, String::UL_HEADER, true);
1.14 paf 246: string->APPEND_CONST("=");
247: string->append(static_cast<Value *>(avalue)->as_string(),
1.20 paf 248: String::UL_HEADER, true);
1.14 paf 249: }
1.20 paf 250: const String& attributed_meaning_to_string(Value& meaning) {
251: String &result=*new(meaning.pool()) String(meaning.pool());
252: if(Hash *hash=meaning.get_hash()) {
1.14 paf 253: // $value(value) $subattribute(subattribute value)
254: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.20 paf 255: result.append(value->as_string(), String::UL_HEADER, true);
1.14 paf 256:
1.25 paf 257: hash->for_each(append_attribute_subattribute, &result);
1.14 paf 258: } else // result value
1.20 paf 259: result.append(meaning.as_string(), String::UL_HEADER, true);
1.14 paf 260:
261: return result;
1.24 paf 262: }
263:
264: #ifdef WIN32
265: void back_slashes_to_slashes(char *s) {
266: if(s)
267: for(; *s; s++)
268: if(*s=='\\')
269: *s='/';
270: }
271: #endif