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|
/*
* Copyright (c) 2001-2002 Secure Software, Inc
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
%x IN_PHP_SCRIPT
%x IN_PHP_OCOMMENT
%option stack
%{
#include <string.h>
#include "tokens.h"
#include "engine.h"
int phplexreal_column = 0;
int phplex_column = 0;
int phplex_lineno = 1;
int yyphplength = 0;
int yyphpsize = 0;
char *yyphpcomment = NULL;
static void count(void);
static int identifier(void);
static void reset_comment(void);
static int cstyle_comment(void);
static void no_match(void);
static void gobble_string(char c);
static void scan_yytext(void);
#define YY_INPUT(buf, result, max_size) \
if (((result = fread(buf, 1, max_size, yyin)) == 0) && ferror(yyin)) { \
YY_FATAL_ERROR("input in flex scanner failed"); \
} else { \
char *c, *end = (buf) + result - 1; \
for (c = (buf); c < end; c++) { \
if (*c == '\r') *c = ' '; \
if (*c == '\\' && *(c + 1) == '\n') { \
memmove(c + 1, c + 2, end - c); \
result--; \
end--; \
*c = '\r'; \
} \
} \
if (*end == '\r') *end = ' '; \
if (*end == '\\') { \
result--; \
fseek(yyin, -1, SEEK_CUR); \
} \
}
%}
LNUM [0-9]+
DNUM ([0-9]*[\.][0-9]+)|([0-9]+[\.][0-9]*)
EXPONENT_DNUM (({LNUM}|{DNUM})[eE][+-]?{LNUM})
HNUM "0x"[0-9a-fA-F]+
LABEL [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*
WHITESPACE [ \n\r\t]+
TABS_AND_SPACES [ \t]*
TOKENS [;:,.\[\]()|^&+-/*=%!~$<>?@]
NEWLINE ("\r"|"\n"|"\r\n")
%%
<INITIAL>"<?"|"<script"{WHITESPACE}+"language"{WHITESPACE}*"="{WHITESPACE}*("php"|"\"php\""|"\'php\'"){WHITESPACE}*">" {
BEGIN(IN_PHP_SCRIPT);
scan_yytext();
count();
return TOKEN_PHP_IN_SCRIPT;
}
<INITIAL>"<%="|"<?=" {
BEGIN(IN_PHP_SCRIPT);
count();
return TOKEN_PHP_IN_SCRIPT;
}
<INITIAL>"<%" {
BEGIN(IN_PHP_SCRIPT);
count();
return TOKEN_PHP_IN_SCRIPT;
}
<INITIAL>"<?php"([ \t]|{NEWLINE}) {
BEGIN(IN_PHP_SCRIPT);
scan_yytext();
count();
return TOKEN_PHP_IN_SCRIPT;
}
<IN_PHP_SCRIPT,IN_PHP_OCOMMENT>("?>"|"</script"{WHITESPACE}*">"){NEWLINE}? {
BEGIN(INITIAL);
scan_yytext();
count();
return TOKEN_PHP_IN_SCRIPT;
}
<IN_PHP_SCRIPT,IN_PHP_OCOMMENT>"%>"{NEWLINE}? {
BEGIN(INITIAL);
scan_yytext();
count();
return TOKEN_PHP_IN_SCRIPT;
}
<IN_PHP_SCRIPT>"#"|"//" {
BEGIN(IN_PHP_OCOMMENT);
count();
return TOKEN_COMMENT;
}
<IN_PHP_SCRIPT>"/*" {count();return cstyle_comment();}
<IN_PHP_SCRIPT>"$" {count();return '$';}
<IN_PHP_SCRIPT>"old_function" {count();return TOKEN_FUNCTION;}
<IN_PHP_SCRIPT>"function"|"cfunction" {count();return TOKEN_FUNCTION;}
<IN_PHP_SCRIPT>"const" {count();return TOKEN_CONST;}
<IN_PHP_SCRIPT>"return" {count();return TOKEN_RETURN;}
<IN_PHP_SCRIPT>"if" {count();return TOKEN_IF;}
<IN_PHP_SCRIPT>"elseif" {count();return TOKEN_ELSEIF;}
<IN_PHP_SCRIPT>"else" {count();return TOKEN_ELSE;}
<IN_PHP_SCRIPT>"while" {count();return TOKEN_WHILE;}
<IN_PHP_SCRIPT>"endwhile" {count();return TOKEN_ENDWHILE;}
<IN_PHP_SCRIPT>"do" {count();return TOKEN_DO;}
<IN_PHP_SCRIPT>"for" {count();return TOKEN_FOR;}
<IN_PHP_SCRIPT>"endfor" {count();return TOKEN_ENDFOR;}
<IN_PHP_SCRIPT>"foreach" {count();return TOKEN_FOREACH;}
<IN_PHP_SCRIPT>"endforeach" {count();return TOKEN_ENDFOREACH;}
<IN_PHP_SCRIPT>"declare" {count();return TOKEN_DECLARE;}
<IN_PHP_SCRIPT>"enddeclare" {count();return TOKEN_ENDDECLARE;}
<IN_PHP_SCRIPT>"as" {count();return TOKEN_AS;}
<IN_PHP_SCRIPT>"switch" {count();return TOKEN_SWITCH;}
<IN_PHP_SCRIPT>"endswitch" {count();return TOKEN_ENDSWITCH;}
<IN_PHP_SCRIPT>"case" {count();return TOKEN_CASE;}
<IN_PHP_SCRIPT>"default" {count();return TOKEN_DEFAULT;}
<IN_PHP_SCRIPT>"break" {count();return TOKEN_BREAK;}
<IN_PHP_SCRIPT>"continue" {count();return TOKEN_CONTINUE;}
<IN_PHP_SCRIPT>"print" {count();return TOKEN_PRINT;}
<IN_PHP_SCRIPT>"class" {count();return TOKEN_CLASS;}
<IN_PHP_SCRIPT>"extends" {count();return TOKEN_EXTENDS;}
<IN_PHP_SCRIPT>"var" {count();return TOKEN_VAR;}
<IN_PHP_SCRIPT>"=>" {count();return TOKEN_DOUBLE_ARROW;}
<IN_PHP_SCRIPT>"++" {count();return TOKEN_INC_OP;}
<IN_PHP_SCRIPT>"--" {count();return TOKEN_DEC_OP;}
<IN_PHP_SCRIPT>"===" {count();return TOKEN_T_EQUAL;}
<IN_PHP_SCRIPT>"!==" {count();return TOKEN_T_NOTEQUAL;}
<IN_PHP_SCRIPT>"==" {count();return TOKEN_EQ_OP;}
<IN_PHP_SCRIPT>"!="|"<>" {count();return TOKEN_NE_OP;}
<IN_PHP_SCRIPT>"<=" {count();return TOKEN_LE_OP;}
<IN_PHP_SCRIPT>">=" {count();return TOKEN_GE_OP;}
<IN_PHP_SCRIPT>"+=" {count();return TOKEN_ADD_ASSIGN;}
<IN_PHP_SCRIPT>"-=" {count();return TOKEN_SUB_ASSIGN;}
<IN_PHP_SCRIPT>"*=" {count();return TOKEN_MUL_ASSIGN;}
<IN_PHP_SCRIPT>"/=" {count();return TOKEN_DIV_ASSIGN;}
<IN_PHP_SCRIPT>".=" {count();return TOKEN_CONCAT_ASSIGN;}
<IN_PHP_SCRIPT>"%=" {count();return TOKEN_MOD_ASSIGN;}
<IN_PHP_SCRIPT>"<<=" {count();return TOKEN_LEFT_ASSIGN;}
<IN_PHP_SCRIPT>">>=" {count();return TOKEN_RIGHT_ASSIGN;}
<IN_PHP_SCRIPT>"&=" {count();return TOKEN_AND_ASSIGN;}
<IN_PHP_SCRIPT>"|=" {count();return TOKEN_OR_ASSIGN;}
<IN_PHP_SCRIPT>"^=" {count();return TOKEN_XOR_ASSIGN;}
<IN_PHP_SCRIPT>"||" {count();return TOKEN_OR_OP;}
<IN_PHP_SCRIPT>"&&" {count();return TOKEN_AND_OP;}
<IN_PHP_SCRIPT>"OR" {count();return TOKEN_OR_OP;}
<IN_PHP_SCRIPT>"AND" {count();return TOKEN_AND_OP;}
<IN_PHP_SCRIPT>"XOR" {count();return TOKEN_XOR_OP;}
<IN_PHP_SCRIPT>"<<" {count();return TOKEN_LEFT_OP;}
<IN_PHP_SCRIPT>">>" {count();return TOKEN_RIGHT_OP;}
<IN_PHP_SCRIPT>{HNUM} {count();return TOKEN_HEX_CONST;}
<IN_PHP_SCRIPT>{DNUM} {count();return TOKEN_DEC_CONST;}
<IN_PHP_SCRIPT>{LNUM} {count();return TOKEN_DEC_CONST;}
<IN_PHP_SCRIPT>{EXPONENT_DNUM} {count();return TOKEN_DEC_CONST;}
<IN_PHP_SCRIPT>{LABEL} {count();return identifier();}
<IN_PHP_SCRIPT>";" { count();return ';'; }
<IN_PHP_SCRIPT>"{" { count();return '{'; }
<IN_PHP_SCRIPT>"}" { count();return '}'; }
<IN_PHP_SCRIPT>"," { count();return ','; }
<IN_PHP_SCRIPT>":" { count();return ':'; }
<IN_PHP_SCRIPT>"=" { count();return '='; }
<IN_PHP_SCRIPT>"(" { count();return '('; }
<IN_PHP_SCRIPT>")" { count();return ')'; }
<IN_PHP_SCRIPT>"[" { count();return '['; }
<IN_PHP_SCRIPT>"]" { count();return ']'; }
<IN_PHP_SCRIPT>"." { count();return '.'; }
<IN_PHP_SCRIPT>"&" { count();return '&'; }
<IN_PHP_SCRIPT>"!" { count();return '!'; }
<IN_PHP_SCRIPT>"~" { count();return '~'; }
<IN_PHP_SCRIPT>"-" { count();return '-'; }
<IN_PHP_SCRIPT>"+" { count();return '+'; }
<IN_PHP_SCRIPT>"*" { count();return '*'; }
<IN_PHP_SCRIPT>"/" { count();return '/'; }
<IN_PHP_SCRIPT>"%" { count();return '%'; }
<IN_PHP_SCRIPT>"<" { count();return '<'; }
<IN_PHP_SCRIPT>"`" { count();return '`'; }
<IN_PHP_SCRIPT>">" { count();return '>'; }
<IN_PHP_SCRIPT>"^" { count();return '^'; }
<IN_PHP_SCRIPT>"@" {count();return '@'; }
<IN_PHP_SCRIPT>"|" { count();return '|'; }
<IN_PHP_SCRIPT>"?" { count();return '?'; }
<IN_PHP_SCRIPT>("\"") { count();gobble_string('"'); return TOKEN_STRING_CONST; }
<IN_PHP_SCRIPT>("'") { count();gobble_string('\''); return TOKEN_STRING_CONST; }
<*>[ \t\v\f] { /* eat white space */ }
<IN_PHP_OCOMMENT>[\n\r] { BEGIN(IN_PHP_SCRIPT); count();phplex_lineno++; }
<INITIAL,IN_PHP_SCRIPT>[\n\r] { count();phplex_lineno++; }
<IN_PHP_OCOMMENT>. { count();/* eat it! */}
<IN_PHP_SCRIPT>. { count();no_match(); }
<INITIAL>. { count();/* it's just HTML, we don't care */}
%%
int yywrap(void)
{
return 1;
}
static void
count()
{
int i;
if (phplexreal_column != 0)
{
phplex_column = phplexreal_column+1;
}
for (i = 0; yytext[i] != '\0'; i++)
{
if (yytext[i] == '\n')
{
phplexreal_column = 0;
phplex_column = 0;
} else if (yytext[i] == '\t') {
phplexreal_column += 8 - (phplexreal_column % 8);
}else {
phplexreal_column++;
}
}
}
static
void gobble_string(char which)
{
int bslash = 0;
signed char c;
while ((c = input()) && c != -1)
{
phplexreal_column++;
switch(c) {
case '\\':
if (!bslash)
bslash = 1;
else
bslash = 0;
break;
case '\n':
phplexreal_column = 0;
phplex_column = 0;
phplex_lineno++;
bslash = 0;
break;
default:
if (c == which && !bslash) {
return;
}
bslash = 0;
break;
}
}
}
static
void scan_yytext(void)
{
char *tmp;
tmp = yytext;
while(*tmp) {
if(*tmp == '\n' || *tmp == '\r')
{
phplexreal_column = 0;
phplex_column = 0;
phplex_lineno++;
}
tmp++;
}
}
static
int identifier(void)
{
char * c;
while ((c = strchr(yytext, '\r')) != (char *)NULL)
{
memmove(c, c + 1, strlen(c));
phplexreal_column = 0;
phplex_column = 0;
phplex_lineno++;
}
return TOKEN_IDENTIFIER;
}
static
void no_match(void)
{
fprintf(stderr, "%s:%d: warning: bad token `%s'\n", current_file, phplex_lineno, yytext);
}
static
void accumulate_comment(char *data, int length)
{
int need;
char * text = yyphpcomment;
need = yyphplength + length + 1;
need = (need + 127) / 128 * 128;
if (need > yyphpsize)
{
text = (char *)(yyphpsize ? realloc(yyphpcomment, need) : malloc(need));
if (text == (char *)NULL)
return;
yyphpsize = need;
yyphpcomment = text;
}
memcpy(yyphpcomment + yyphplength, data, length);
yyphplength += length;
*(yyphpcomment + yyphplength) = '\0';
}
static
void reset_comment(void)
{
if (yyphpcomment != (char *)NULL)
*yyphpcomment = '\0';
yyphplength = 0;
}
static
int cstyle_comment(void)
{
signed char c;
reset_comment();
while ((c = input()) && c != -1)
{
phplexreal_column++;
accumulate_comment(&c, 1);
if (c == '\n' || c == '\r')
{
phplexreal_column = 0;
phplex_column = 0;
phplex_lineno++;
}
while (c == '*')
{
phplexreal_column++;
if (!(c = input()) || c == -1) {
return TOKEN_COMMENT;
}
if (c == '\n' || c == '\r')
{
phplexreal_column = 0;
phplex_column = 0;
phplex_lineno++;
}
if (c == '/') {
return TOKEN_COMMENT;
} else
{
char tmp[2] = { '*', c };
accumulate_comment(tmp, sizeof(tmp));
}
}
}
return TOKEN_COMMENT;
}
|
