Annotation of parser3/src/main/pa_common.C, revision 1.33
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:
1.33 ! paf 9: $Id: pa_common.C, v 1.32 2001/03/27 15:37:51 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) {
1.33 ! paf 48: char *fname=file_spec.cstr();
! 49: int f;
1.2 paf 50: struct stat finfo;
1.33 ! paf 51:
! 52: // first open, next stat:
! 53: // directory update of NTFS symbolic links performed on open.
! 54: // ex:
! 55: // a.html:^test[] and b.html hardlink to a.html
! 56: // user inserts ! before ^test in a.html
! 57: // directory entry of b.html in NTFS not updated at once,
! 58: // they delay update till open, so we must not do stat before that
! 59: if((f=open(fname, O_RDONLY|_O_TEXT))>=0 && stat(fname, &finfo)==0) {
1.2 paf 60: /*if(exclusive)
61: flock(f, LOCK_EX);*/
1.10 paf 62: char *result=(char *)pool.malloc(finfo.st_size+1);
1.33 ! paf 63: int read_size=read(f, result, finfo.st_size);
1.2 paf 64: /*if(exclusive)
65: flock(f, LOCK_UN);*/
66: close(f);
1.32 paf 67:
68: if(read_size>=0 && read_size<=finfo.st_size)
1.33 ! paf 69: result[read_size]=0;
1.32 paf 70: else
1.33 ! paf 71: PTHROW(0, 0,
! 72: &file_spec,
! 73: "read failed: actually read %d bytes count not in [0..%ul] valid range",
1.32 paf 74: read_size, (unsigned long)finfo.st_size);
75:
1.2 paf 76: return result;//prepare_config(result, remove_empty_lines);
77: }
1.4 paf 78: if(fail_on_read_problem)
1.33 ! paf 79: PTHROW(0, 0,
! 80: &file_spec,
1.29 paf 81: "read failed: %s (#%d)", strerror(errno), errno);
1.8 paf 82: return 0;
83: }
84:
1.18 paf 85: void file_write(Pool& pool,
1.28 paf 86: const String& file_spec,
1.18 paf 87: const char *data, size_t size,
1.33 ! paf 88: bool as_text/*,
1.20 paf 89: bool exclusive*/) {
1.28 paf 90: char *fname=file_spec.cstr();
91: int f;
92: if(access(fname, F_OK)!=0) {/*no*/
1.33 ! paf 93: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 94: close(f);
95: }
96: if(access(fname, R_OK|W_OK)==0) {
97: int mode=O_RDWR
1.18 paf 98: #ifdef WIN32
1.28 paf 99: |O_TRUNC
1.18 paf 100: #endif
1.28 paf 101: ;
102: mode|=as_text?_O_TEXT:_O_BINARY;
1.33 ! paf 103: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 104: /*if(exclusive)
105: flock(f, LOCK_EX);*/
106:
1.33 ! paf 107: if(size) write(f, data, size);
1.18 paf 108: #ifndef WIN32
1.33 ! paf 109: ftruncate(f, size);
1.18 paf 110: #endif
1.28 paf 111: /*if(exclusive)
112: flock(f, LOCK_UN);*/
113: close(f);
114: return;
1.18 paf 115: }
116: }
1.33 ! paf 117: PTHROW(0, 0,
! 118: &file_spec,
1.29 paf 119: "write failed: %s (#%d)", strerror(errno), errno);
1.30 paf 120: }
121:
122: void file_delete(Pool& pool, const String& file_spec) {
123: if(unlink(file_spec.cstr())!=0)
1.33 ! paf 124: PTHROW(0, 0,
! 125: &file_spec,
1.30 paf 126: "unlink failed: %s (#%d)", strerror(errno), errno);
1.31 paf 127: }
128:
129: bool file_readable(const String& file_spec) {
130: return access(file_spec.cstr(), R_OK)==0;
1.18 paf 131: }
132:
1.8 paf 133: char *getrow(char **row_ref, char delim) {
134: char *result=*row_ref;
135: if(result) {
136: *row_ref=strchr(result, delim);
137: if(*row_ref)
138: *((*row_ref)++)=0;
139: else if(!*result)
140: return 0;
141: }
142: return result;
143: }
144:
1.23 paf 145: char *lsplit(char *string, char delim) {
146: if(string) {
147: char *v=strchr(string, delim);
1.8 paf 148: if(v) {
149: *v=0;
150: return v+1;
151: }
152: }
153: return 0;
154: }
155:
156: char *lsplit(char **string_ref, char delim) {
157: char *result=*string_ref;
158: char *next=lsplit(*string_ref, delim);
159: *string_ref=next;
160: return result;
1.9 paf 161: }
162:
163: char *rsplit(char *string, char delim) {
1.18 paf 164: if(string) {
1.9 paf 165: char *v=strrchr(string, delim);
1.18 paf 166: if(v) {
1.9 paf 167: *v=0;
168: return v+1;
169: }
170: }
171: return NULL;
1.10 paf 172: }
173:
174: char *format(Pool& pool, double value, char *fmt) {
175: char *result=(char *)pool.malloc(MAX_NUMBER);
176: if(fmt)
177: if(strpbrk(fmt, "diouxX"))
178: if(strpbrk(fmt, "ouxX"))
1.33 ! paf 179: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 180: else
1.33 ! paf 181: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 182: else
183: snprintf(result, MAX_NUMBER, fmt, value);
184: else
1.33 ! paf 185: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 186:
187: return result;
1.12 paf 188: }
189:
1.13 paf 190: size_t stdout_write(const char *buf, size_t size) {
1.12 paf 191: #ifdef WIN32
192: do{
193: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
194: if(chunk_written<=0)
195: break;
196: size-=chunk_written;
197: buf+=chunk_written;
198: } while(size>0);
199:
200: return size;
201: #else
1.13 paf 202: return fwrite(buf, 1, size, stdout);
1.12 paf 203: #endif
1.2 paf 204: }
1.14 paf 205:
206: const char *unescape_chars(Pool& pool, const char *cp, int len) {
207: char *s=(char *)pool.malloc(len + 1);
208: enum EscapeState {
1.33 ! paf 209: EscapeRest,
! 210: EscapeFirst,
1.14 paf 211: EscapeSecond
212: } escapeState=EscapeRest;
213: int escapedValue=0;
214: int srcPos=0;
215: int dstPos=0;
216: while(srcPos < len) {
217: int ch=cp[srcPos];
218: switch(escapeState) {
219: case EscapeRest:
220: if(ch=='%') {
221: escapeState=EscapeFirst;
222: } else if(ch=='+') {
223: s[dstPos++]=' ';
224: } else {
225: s[dstPos++]=ch;
226: }
227: break;
228: case EscapeFirst:
229: escapedValue=hex_value[ch] << 4;
230: escapeState=EscapeSecond;
231: break;
232: case EscapeSecond:
233: escapedValue +=hex_value[ch];
234: s[dstPos++]=escapedValue;
235: escapeState=EscapeRest;
236: break;
237: }
238: srcPos++;
239: }
240: s[dstPos]=0;
241: return s;
242: }
243:
1.17 paf 244: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 245: void *info) {
246: if(akey==VALUE_NAME)
247: return;
248:
249: // ...; charset=windows1251
250: String *string=static_cast<String *>(info);
251: string->APPEND_CONST("; ");
1.20 paf 252: string->append(akey, String::UL_HEADER, true);
1.14 paf 253: string->APPEND_CONST("=");
254: string->append(static_cast<Value *>(avalue)->as_string(),
1.20 paf 255: String::UL_HEADER, true);
1.14 paf 256: }
1.20 paf 257: const String& attributed_meaning_to_string(Value& meaning) {
258: String &result=*new(meaning.pool()) String(meaning.pool());
259: if(Hash *hash=meaning.get_hash()) {
1.14 paf 260: // $value(value) $subattribute(subattribute value)
261: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.20 paf 262: result.append(value->as_string(), String::UL_HEADER, true);
1.14 paf 263:
1.25 paf 264: hash->for_each(append_attribute_subattribute, &result);
1.14 paf 265: } else // result value
1.20 paf 266: result.append(meaning.as_string(), String::UL_HEADER, true);
1.14 paf 267:
268: return result;
1.24 paf 269: }
270:
271: #ifdef WIN32
272: void back_slashes_to_slashes(char *s) {
273: if(s)
274: for(; *s; s++)
275: if(*s=='\\')
276: *s='/';
277: }
278: #endif
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