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php-src/ext/standard/url_scanner.c

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/* Generated by re2c 0.5 on Tue Nov 9 14:56:27 1999 */
#line 1 "../../../php4/ext/standard/url_scanner.re"
/*
+----------------------------------------------------------------------+
| PHP version 4.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997, 1998, 1999 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.php.net/license/2_0.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Sascha Schumann <sascha@schumann.cx> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "snprintf.h"
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#undef MIN
#define MIN(a,b) (a)<(b)?(a):(b)
#define YYCTYPE char
#define YYCURSOR state->crs
#define YYLIMIT state->end
#define YYMARKER state->ptr
#define YYFILL(n)
typedef enum {
INITIAL,
REF
} state;
typedef struct {
state state;
const char *crs;
const char *end;
const char *ptr;
const char *start;
char *target;
size_t targetsize;
const char *data;
} lexdata;
#define FINISH { catchup(state); goto finish; }
#define BEGIN(x) \
switch(state->state) { \
case INITIAL: \
catchup(state); \
break; \
case REF: \
screw_url(state); \
break; \
} \
state->state = x; \
state->start = state->crs; \
goto nextiter
#define ATTACH(s, n) \
{ \
size_t _newlen = state->targetsize + n; \
state->target = realloc(state->target, _newlen + 1); \
memcpy(state->target + state->targetsize, s, n); \
state->targetsize = _newlen; \
state->target[_newlen] = '\0'; \
}
#define URLLEN 512
static void screw_url(lexdata *state)
{
int len;
char buf[URLLEN];
char url[URLLEN];
const char *p, *q;
char c;
/* search outer limits for URI */
for(p = state->start; p < state->crs && (c = *p); p++)
if(c != '"' && c != ' ') break;
/*
* we look at q-1, because q points to the character behind the last
* character we are going to copy and the decision is based on that last
* character
*/
for(q = state->crs; q > state->start && (c = *(q-1)); q--)
if(c != '"' && c != ' ') break;
/* attach beginning */
ATTACH(state->start, p-state->start);
/* copy old URI */
len = MIN(q - p, sizeof(buf) - 1);
memcpy(url, p, len);
url[len] = '\0';
/* construct new URI */
len = snprintf(buf, sizeof(buf), "%s%c%s", url,
memchr(state->start, '?', len) ? '&' : '?',
state->data);
/* attach new URI */
ATTACH(buf, len);
/* attach rest */
ATTACH(q, state->crs - q);
}
static void catchup(lexdata *state)
{
ATTACH(state->start, (state->crs - state->start));
}
#line 142
static void url_scanner(lexdata *state)
{
while(state->crs < state->end) {
switch(state->state) {
case INITIAL:
{
YYCTYPE yych;
unsigned int yyaccept;
goto yy0;
yy1: ++YYCURSOR;
yy0:
if((YYLIMIT - YYCURSOR) < 7) YYFILL(7);
yych = *YYCURSOR;
switch(yych){
case '\000': goto yy7;
case '<': goto yy2;
default: goto yy4;
}
yy2: yych = *++YYCURSOR;
switch(yych){
case 'A': case 'a': goto yy9;
case 'F': case 'f': goto yy10;
default: goto yy3;
}
yy3:yy4: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy5: switch(yych){
case '\000': case '<': goto yy6;
default: goto yy4;
}
yy6:
#line 155
{ BEGIN(INITIAL); }
yy7: yych = *++YYCURSOR;
yy8:
#line 156
{ FINISH; }
yy9: yych = *++YYCURSOR;
switch(yych){
case 'H': case 'h': goto yy3;
case 'R': case 'r': goto yy41;
default: goto yy40;
}
yy10: yych = *++YYCURSOR;
switch(yych){
case 'O': case 'o': goto yy12;
case 'R': case 'r': goto yy11;
default: goto yy3;
}
yy11: yych = *++YYCURSOR;
switch(yych){
case 'A': case 'a': goto yy27;
default: goto yy3;
}
yy12: yych = *++YYCURSOR;
switch(yych){
case 'R': case 'r': goto yy13;
default: goto yy3;
}
yy13: yych = *++YYCURSOR;
switch(yych){
case 'M': case 'm': goto yy14;
default: goto yy3;
}
yy14: yych = *++YYCURSOR;
switch(yych){
case 'A': case 'a': goto yy3;
default: goto yy16;
}
yy15: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy16: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy15;
case 'A': case 'a': goto yy17;
default: goto yy3;
}
yy17: yych = *++YYCURSOR;
switch(yych){
case 'C': case 'c': goto yy18;
default: goto yy3;
}
yy18: yych = *++YYCURSOR;
switch(yych){
case 'T': case 't': goto yy19;
default: goto yy3;
}
yy19: yych = *++YYCURSOR;
switch(yych){
case 'I': case 'i': goto yy20;
default: goto yy3;
}
yy20: yych = *++YYCURSOR;
switch(yych){
case 'O': case 'o': goto yy21;
default: goto yy3;
}
yy21: yych = *++YYCURSOR;
switch(yych){
case 'N': case 'n': goto yy22;
default: goto yy3;
}
yy22: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy23: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy22;
case '=': goto yy24;
default: goto yy3;
}
yy24: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy25: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy24;
default: goto yy26;
}
yy26:
#line 153
{ BEGIN(REF); }
yy27: yych = *++YYCURSOR;
switch(yych){
case 'M': case 'm': goto yy28;
default: goto yy3;
}
yy28: yych = *++YYCURSOR;
switch(yych){
case 'E': case 'e': goto yy29;
default: goto yy3;
}
yy29: yych = *++YYCURSOR;
switch(yych){
case 'S': case 's': goto yy3;
default: goto yy31;
}
yy30: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy31: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy30;
case 'S': case 's': goto yy32;
default: goto yy3;
}
yy32: yych = *++YYCURSOR;
switch(yych){
case 'R': case 'r': goto yy33;
default: goto yy3;
}
yy33: yych = *++YYCURSOR;
switch(yych){
case 'C': case 'c': goto yy34;
default: goto yy3;
}
yy34: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy35: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy34;
case '=': goto yy36;
default: goto yy3;
}
yy36: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy37: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy36;
default: goto yy38;
}
yy38:
#line 151
{ BEGIN(REF); }
yy39: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy40: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy39;
case 'H': case 'h': goto yy54;
default: goto yy3;
}
yy41: yych = *++YYCURSOR;
switch(yych){
case 'E': case 'e': goto yy42;
default: goto yy3;
}
yy42: yych = *++YYCURSOR;
switch(yych){
case 'A': case 'a': goto yy43;
default: goto yy3;
}
yy43: yych = *++YYCURSOR;
switch(yych){
case 'H': case 'h': goto yy3;
default: goto yy45;
}
yy44: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy45: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy44;
case 'H': case 'h': goto yy46;
default: goto yy3;
}
yy46: yych = *++YYCURSOR;
switch(yych){
case 'R': case 'r': goto yy47;
default: goto yy3;
}
yy47: yych = *++YYCURSOR;
switch(yych){
case 'E': case 'e': goto yy48;
default: goto yy3;
}
yy48: yych = *++YYCURSOR;
switch(yych){
case 'F': case 'f': goto yy49;
default: goto yy3;
}
yy49: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy50: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy49;
case '=': goto yy51;
default: goto yy3;
}
yy51: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy52: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy51;
default: goto yy53;
}
yy53:
#line 154
{ BEGIN(REF); }
yy54: yych = *++YYCURSOR;
switch(yych){
case 'R': case 'r': goto yy55;
default: goto yy3;
}
yy55: yych = *++YYCURSOR;
switch(yych){
case 'E': case 'e': goto yy56;
default: goto yy3;
}
yy56: yych = *++YYCURSOR;
switch(yych){
case 'F': case 'f': goto yy57;
default: goto yy3;
}
yy57: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy58: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy57;
case '=': goto yy59;
default: goto yy3;
}
yy59: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy60: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy59;
default: goto yy61;
}
yy61:
#line 152
{ BEGIN(REF); }
}
#line 157
break;
case REF:
{
YYCTYPE yych;
unsigned int yyaccept;
goto yy62;
yy63: ++YYCURSOR;
yy62:
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
switch(yych){
case '\000': case '>': goto yy64;
case '\t': case '\v':
case '\f': case ' ': case '"': goto yy65;
case '#': goto yy69;
case ':': goto yy71;
default: goto yy67;
}
yy64:
#line 161
{ BEGIN(INITIAL); }
yy65: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy66: switch(yych){
case '\000': case '>': goto yy64;
case '\t': case '\v':
case '\f': case ' ': goto yy65;
case '"': goto yy79;
case '#': goto yy69;
case ':': goto yy71;
default: goto yy67;
}
yy67: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy68: switch(yych){
case '\000': case '>': goto yy64;
case '\t': case '\v':
case '\f': case ' ': goto yy77;
case '"': goto yy79;
case '#': goto yy69;
case ':': goto yy71;
default: goto yy67;
}
yy69: yych = *++YYCURSOR;
yy70: YYCURSOR -= 1;
#line 162
{ BEGIN(INITIAL); }
yy71: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy72: switch(yych){
case '\000': case '#': case '>': goto yy73;
case '\t': case '\v':
case '\f': case ' ': goto yy74;
case '"': goto yy76;
default: goto yy71;
}
yy73:
#line 163
{
/* don't modify absolute links */
state->state = INITIAL; BEGIN(INITIAL);
}
yy74: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy75: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy74;
case '"': goto yy76;
default: goto yy73;
}
yy76: yych = *++YYCURSOR;
goto yy73;
yy77: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy78: switch(yych){
case '\t': case '\v':
case '\f': case ' ': goto yy77;
case '"': goto yy79;
default: goto yy64;
}
yy79: yych = *++YYCURSOR;
goto yy64;
}
#line 167
break;
}
nextiter:
;
}
finish:
;
}
char *url_adapt(const char *src, size_t srclen, const char *data, size_t *newlen)
{
lexdata state;
state.state = INITIAL;
state.start = state.crs = src;
state.end = src + srclen;
state.ptr = NULL;
state.target = NULL;
state.targetsize = 0;
state.data = data;
url_scanner(&state);
if(newlen) *newlen = state.targetsize;
return state.target;
}
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