Annotation of parser3/src/main/pa_common.C, revision 1.40
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:
1.40 ! paf 9: $Id: pa_common.C,v 1.39 2001/04/03 17:01:03 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) {
1.39 paf 56: char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.33 paf 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:
1.38 paf 97: /// @test mkdirs
1.18 paf 98: void file_write(Pool& pool,
1.28 paf 99: const String& file_spec,
1.34 paf 100: const void *data, size_t size,
1.33 paf 101: bool as_text/*,
1.20 paf 102: bool exclusive*/) {
1.39 paf 103: char *fname=file_spec.cstr(String::UL_FILE_NAME);
1.28 paf 104: int f;
105: if(access(fname, F_OK)!=0) {/*no*/
1.33 paf 106: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 107: close(f);
108: }
109: if(access(fname, R_OK|W_OK)==0) {
1.34 paf 110: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 111: #ifdef WIN32
1.28 paf 112: |O_TRUNC
1.18 paf 113: #endif
1.28 paf 114: ;
1.33 paf 115: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 116: /*if(exclusive)
117: flock(f, LOCK_EX);*/
118:
1.33 paf 119: if(size) write(f, data, size);
1.18 paf 120: #ifndef WIN32
1.33 paf 121: ftruncate(f, size);
1.18 paf 122: #endif
1.28 paf 123: /*if(exclusive)
124: flock(f, LOCK_UN);*/
125: close(f);
126: return;
1.18 paf 127: }
128: }
1.33 paf 129: PTHROW(0, 0,
130: &file_spec,
1.29 paf 131: "write failed: %s (#%d)", strerror(errno), errno);
1.30 paf 132: }
133:
134: void file_delete(Pool& pool, const String& file_spec) {
1.39 paf 135: if(unlink(file_spec.cstr(String::UL_FILE_NAME))!=0)
1.33 paf 136: PTHROW(0, 0,
137: &file_spec,
1.30 paf 138: "unlink failed: %s (#%d)", strerror(errno), errno);
1.31 paf 139: }
140:
141: bool file_readable(const String& file_spec) {
1.39 paf 142: return access(file_spec.cstr(String::UL_FILE_NAME), R_OK)==0;
1.18 paf 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:
1.23 paf 157: char *lsplit(char *string, char delim) {
158: if(string) {
159: char *v=strchr(string, delim);
1.8 paf 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:
1.37 paf 186: /// @todo less stupid type detection
1.10 paf 187: char *format(Pool& pool, double value, char *fmt) {
188: char *result=(char *)pool.malloc(MAX_NUMBER);
189: if(fmt)
190: if(strpbrk(fmt, "diouxX"))
191: if(strpbrk(fmt, "ouxX"))
1.33 paf 192: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 193: else
1.33 paf 194: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 195: else
196: snprintf(result, MAX_NUMBER, fmt, value);
197: else
1.33 paf 198: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 199:
200: return result;
1.12 paf 201: }
202:
1.36 paf 203: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 204: #ifdef WIN32
205: do{
206: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
207: if(chunk_written<=0)
208: break;
209: size-=chunk_written;
1.36 paf 210: buf=((const char*)buf)+chunk_written;
1.12 paf 211: } while(size>0);
212:
213: return size;
214: #else
1.13 paf 215: return fwrite(buf, 1, size, stdout);
1.12 paf 216: #endif
1.2 paf 217: }
1.14 paf 218:
219: const char *unescape_chars(Pool& pool, const char *cp, int len) {
220: char *s=(char *)pool.malloc(len + 1);
221: enum EscapeState {
1.33 paf 222: EscapeRest,
223: EscapeFirst,
1.14 paf 224: EscapeSecond
225: } escapeState=EscapeRest;
226: int escapedValue=0;
227: int srcPos=0;
228: int dstPos=0;
229: while(srcPos < len) {
230: int ch=cp[srcPos];
231: switch(escapeState) {
232: case EscapeRest:
233: if(ch=='%') {
234: escapeState=EscapeFirst;
235: } else if(ch=='+') {
236: s[dstPos++]=' ';
237: } else {
238: s[dstPos++]=ch;
239: }
240: break;
241: case EscapeFirst:
242: escapedValue=hex_value[ch] << 4;
243: escapeState=EscapeSecond;
244: break;
245: case EscapeSecond:
246: escapedValue +=hex_value[ch];
247: s[dstPos++]=escapedValue;
248: escapeState=EscapeRest;
249: break;
250: }
251: srcPos++;
252: }
253: s[dstPos]=0;
254: return s;
255: }
256:
1.40 ! paf 257: struct Attributed_meaning_info {
! 258: String::Untaint_lang lang;
! 259: String *header;
! 260: };
1.17 paf 261: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 262: void *info) {
263: if(akey==VALUE_NAME)
264: return;
265:
1.40 ! paf 266: Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info);
! 267:
1.14 paf 268: // ...; charset=windows1251
1.40 ! paf 269: if(ami.header->size())
! 270: ami.header->APPEND_CONST("; ");
! 271: ami.header->append(akey, ami.lang, true);
! 272: ami.header->APPEND_CONST("=");
! 273: ami.header->append(static_cast<Value *>(avalue)->as_string(),
! 274: ami.lang, true);
1.14 paf 275: }
1.40 ! paf 276: const String& attributed_meaning_to_string(Value& meaning, String::Untaint_lang lang) {
1.20 paf 277: String &result=*new(meaning.pool()) String(meaning.pool());
278: if(Hash *hash=meaning.get_hash()) {
1.14 paf 279: // $value(value) $subattribute(subattribute value)
280: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.40 ! paf 281: result.append(value->as_string(), lang, true);
1.14 paf 282:
1.40 ! paf 283: Attributed_meaning_info attributed_meaning_info={
! 284: lang,
! 285: &result
! 286: };
! 287: hash->for_each(append_attribute_subattribute, &attributed_meaning_info);
1.14 paf 288: } else // result value
1.40 ! paf 289: result.append(meaning.as_string(), lang, true);
1.14 paf 290:
291: return result;
1.24 paf 292: }
293:
294: #ifdef WIN32
295: void back_slashes_to_slashes(char *s) {
296: if(s)
297: for(; *s; s++)
298: if(*s=='\\')
299: *s='/';
300: }
301: #endif
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