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%{
#include <string.h>
#include <ctype.h>
#include "bow/archer.h"
#define FILENAME_LEN 256
static long pos = 0;
static long line = 0;
static char filename[FILENAME_LEN];
void pop_label();
void push_label();
void strip_entity(char entity[]);
int parse_entity(void);
%}
%option noyywrap
%s PARSE_TAGS
NAME [[:alpha:]][_[:alnum:]]+
ENTITY "&"(lt|gt|amp|quot|apos)";"
%%
<PARSE_TAGS>{ENTITY} pos++;
/* <PARSE_TAGS>"&"{NAME}";" if (!parse_entity()) return 1; */
<PARSE_TAGS>"<"{NAME}">" push_label(); return 2;
<PARSE_TAGS>"</"{NAME}">" pop_label(); return 3;
[[:alnum:]]+ pos += yyleng; return 1;
\n pos++; line++;
. pos++;
%%
int is_entity (char entity[])
{
int ret = 0;
if (!strcmp(entity, "<") ||
!strcmp(entity, ">") ||
!strcmp(entity, "&") ||
!strcmp(entity, """) ||
!strcmp(entity, "'"))
ret = 1;
return ret;
}
void strip_entity (char entity[])
{
memmove (entity, &entity[1], strlen (entity));
entity[strlen(entity) - 1] = '\0';
}
int parse_entity(void)
{
if (is_entity (yytext))
{
pos += 1;
return 1;
}
else
{
strip_entity (yytext);
pos += yyleng;
return 0;
}
}
void strip_label (char label[])
{
memmove (label, &label[(label[1] == '/' ? 2 : 1)], strlen (label));
label[strlen (label) - 1] = '\0';
}
void push_label ()
{
strip_label (yytext);
bow_push_label (yytext);
}
void pop_label ()
{
char buf[100];
bow_pop_label (buf, 100);
strip_label (yytext);
if(strcmp (buf, yytext)) printf("ERROR: at line %ld, expected </%s>, instead got </%s>. This is invalid XML.\n", line, yytext, buf);
}
void tagged_lex_open_dont_parse_tags (FILE * fp, const char * name)
{
yyin = fp;
pos = 0;
line = 0;
strncpy (filename, name, FILENAME_LEN);
BEGIN (INITIAL);
}
void tagged_lex_open (FILE * fp, const char * name)
{
yyin = fp;
pos = 0;
line = 0;
strncpy (filename, name, FILENAME_LEN);
BEGIN (PARSE_TAGS);
}
int tagged_lex_get_word_extended(char buf[], int bufsz, long *start, long *end)
{
int ret;
ret = yylex();
if (ret == 1 || ret == 2 || ret == 3)
{
int i, len;
strncpy(buf, (ret == 1 ? yytext : bow_last_label()), bufsz);
buf[bufsz - 1] = 0;
len = ret == 1 ? yyleng : strlen(buf);
for (i = 0; i < len; ++i) buf[i] = tolower(buf[i]);
if(start != NULL)
{
*end = pos - 1;
*start = pos - yyleng;
}
}
return ret;
}
int tagged_lex_get_word(char buf[], int bufsz) {
return tagged_lex_get_word_extended(buf, bufsz, NULL, NULL);
}
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