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php-src/ext/standard/url_scanner.c

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/* Generated by re2c 0.5 on Mon Sep 20 15:47:10 1999 */
#line 1 "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 <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 135
static void url_scanner(lexdata *state)
{
while(state->crs < state->end) {
switch(state->state) {
case INITIAL:
{
YYCTYPE yych;
unsigned int yyaccept;
static unsigned char yybm[] = {
0, 64, 64, 64, 64, 64, 64, 64,
64, 192, 64, 192, 192, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
192, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 0, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64,
};
goto yy0;
yy1: ++YYCURSOR;
yy0:
if((YYLIMIT - YYCURSOR) < 7) YYFILL(7);
yych = *YYCURSOR;
if(yybm[0+yych] & 64) goto yy4;
if(yych <= '\000') goto yy7;
yy2: yych = *++YYCURSOR;
if(yych <= 'F'){
if(yych == 'A') goto yy9;
if(yych >= 'F') goto yy10;
} else {
if(yych <= 'a'){
if(yych >= 'a') goto yy9;
} else {
if(yych == 'f') goto yy10;
}
}
yy3:yy4: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy5: if(yybm[0+yych] & 64) goto yy4;
yy6:
#line 146
{ BEGIN(INITIAL); }
yy7: yych = *++YYCURSOR;
yy8:
#line 147
{ FINISH; }
yy9: yych = *++YYCURSOR;
if(yych == 'H') goto yy3;
if(yych == 'h') goto yy3;
goto yy25;
yy10: yych = *++YYCURSOR;
if(yych == 'R') goto yy11;
if(yych != 'r') goto yy3;
yy11: yych = *++YYCURSOR;
if(yych == 'A') goto yy12;
if(yych != 'a') goto yy3;
yy12: yych = *++YYCURSOR;
if(yych == 'M') goto yy13;
if(yych != 'm') goto yy3;
yy13: yych = *++YYCURSOR;
if(yych == 'E') goto yy14;
if(yych != 'e') goto yy3;
yy14: yych = *++YYCURSOR;
if(yych == 'S') goto yy3;
if(yych == 's') goto yy3;
goto yy16;
yy15: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy16: if(yybm[0+yych] & 128) goto yy15;
if(yych == 'S') goto yy17;
if(yych != 's') goto yy3;
yy17: yych = *++YYCURSOR;
if(yych == 'R') goto yy18;
if(yych != 'r') goto yy3;
yy18: yych = *++YYCURSOR;
if(yych == 'C') goto yy19;
if(yych != 'c') goto yy3;
yy19: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy20: if(yych <= '\f'){
if(yych == '\t') goto yy19;
if(yych <= '\n') goto yy3;
goto yy19;
} else {
if(yych <= ' '){
if(yych <= '\037') goto yy3;
goto yy19;
} else {
if(yych != '=') goto yy3;
}
}
yy21: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy22: if(yych <= '\n'){
if(yych == '\t') goto yy21;
} else {
if(yych <= '\f') goto yy21;
if(yych == ' ') goto yy21;
}
yy23:
#line 144
{ BEGIN(REF); }
yy24: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy25: if(yych <= '\037'){
if(yych <= '\t'){
if(yych <= '\b') goto yy3;
goto yy24;
} else {
if(yych <= '\n') goto yy3;
if(yych <= '\f') goto yy24;
goto yy3;
}
} else {
if(yych <= 'H'){
if(yych <= ' ') goto yy24;
if(yych <= 'G') goto yy3;
} else {
if(yych != 'h') goto yy3;
}
}
yy26: yych = *++YYCURSOR;
if(yych == 'R') goto yy27;
if(yych != 'r') goto yy3;
yy27: yych = *++YYCURSOR;
if(yych == 'E') goto yy28;
if(yych != 'e') goto yy3;
yy28: yych = *++YYCURSOR;
if(yych == 'F') goto yy29;
if(yych != 'f') goto yy3;
yy29: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy30: if(yych <= '\f'){
if(yych == '\t') goto yy29;
if(yych <= '\n') goto yy3;
goto yy29;
} else {
if(yych <= ' '){
if(yych <= '\037') goto yy3;
goto yy29;
} else {
if(yych != '=') goto yy3;
}
}
yy31: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy32: if(yych <= '\n'){
if(yych == '\t') goto yy31;
} else {
if(yych <= '\f') goto yy31;
if(yych == ' ') goto yy31;
}
yy33:
#line 145
{ BEGIN(REF); }
}
#line 148
break;
case REF:
{
YYCTYPE yych;
unsigned int yyaccept;
static unsigned char yybm[] = {
0, 192, 192, 192, 192, 192, 192, 192,
192, 32, 192, 32, 32, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
32, 192, 0, 0, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 128, 192, 192, 192, 0, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
192, 192, 192, 192, 192, 192, 192, 192,
};
goto yy34;
yy35: ++YYCURSOR;
yy34:
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
if(yybm[0+yych] & 64) goto yy39;
if(yych <= '\000') goto yy36;
if(yych <= '"') goto yy37;
if(yych <= '#') goto yy36;
if(yych <= '=') goto yy42;
yy36:yy37: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy38: if(yybm[0+yych] & 64) goto yy39;
if(yych <= '\000') goto yy36;
if(yych <= '!') goto yy37;
if(yych == ':') goto yy42;
goto yy36;
yy39: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy40: if(yybm[0+yych] & 64) goto yy39;
if(yych <= '"'){
if(yych <= '\000') goto yy41;
if(yych <= '!') goto yy48;
goto yy50;
} else {
if(yych <= '#') goto yy51;
if(yych <= '=') goto yy42;
}
yy41:
#line 152
{ BEGIN(INITIAL); }
yy42: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy43: if(yybm[0+yych] & 128) goto yy42;
if(yych <= '\000') goto yy44;
if(yych <= '!') goto yy45;
if(yych <= '"') goto yy47;
yy44:
#line 154
{
/* don't modify absolute links */
state->state = INITIAL; BEGIN(INITIAL);
}
yy45: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy46: if(yych <= '\f'){
if(yych == '\t') goto yy45;
if(yych <= '\n') goto yy44;
goto yy45;
} else {
if(yych <= ' '){
if(yych <= '\037') goto yy44;
goto yy45;
} else {
if(yych != '"') goto yy44;
}
}
yy47: yych = *++YYCURSOR;
goto yy44;
yy48: ++YYCURSOR;
if(YYLIMIT == YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy49: if(yych <= '\f'){
if(yych == '\t') goto yy48;
if(yych <= '\n') goto yy41;
goto yy48;
} else {
if(yych <= ' '){
if(yych <= '\037') goto yy41;
goto yy48;
} else {
if(yych != '"') goto yy41;
}
}
yy50: yych = *++YYCURSOR;
goto yy41;
yy51: yych = *++YYCURSOR;
yy52: YYCURSOR -= 1;
#line 153
{ BEGIN(INITIAL); }
}
#line 158
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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