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/*
** Copyright 2000 Double Precision, Inc. See COPYING for
** distribution information.
*/
#include "rfc2045_config.h"
#include "rfc2646.h"
#include <stdlib.h>
#include <string.h>
static const char rcsid[]="$Id: rfc2646.c,v 1.2 2003/03/07 00:47:31 mrsam Exp $";
struct rfc2646parser *rfc2646_alloc( int (*f)(struct rfc2646parser *, int,
void *),
void *a)
{
struct rfc2646parser *p=(struct rfc2646parser *)
calloc(1, sizeof(struct rfc2646parser));
if (!p)
return (0);
p->handler=f;
p->voidarg=a;
return (p);
}
#define PARSER_QUOTECNT 1
#define PARSER_LINE 2
int rfc2646_parse_cb(const char *s, size_t c, void *vp)
{
return (rfc2646_parse( (struct rfc2646parser *)vp, s, c));
}
int rfc2646_parse(struct rfc2646parser *p, const char *s, size_t c)
{
for ( ; c; --c, ++s)
{
if (*s == '\r')
continue;
if (!p->parse_mode)
{
p->parse_mode=PARSER_QUOTECNT;
p->quote_depth=0;
p->linelen=0;
}
if (*s == '\n')
{
int rc;
int isflowed=0;
if (p->linelen && p->line[p->linelen-1] == ' ' &&
(p->linelen != 3 || strncmp(p->line, "-- ", 3)))
{
--p->linelen;
isflowed=1;
}
p->line[p->linelen]=0;
p->parse_mode=0;
rc=(*p->handler)(p, isflowed, p->voidarg);
if (rc)
return (rc);
continue;
}
if (p->parse_mode == PARSER_QUOTECNT)
{
if (*s == '>')
{
++p->quote_depth;
continue;
}
p->parse_mode=PARSER_LINE;
if (*s == ' ')
{
continue;
}
}
if (p->linelen < sizeof(p->line)-1)
p->line[p->linelen++]= *s;
}
return (0);
}
int rfc2646_free(struct rfc2646parser *p)
{
int rc=0;
if (p->parse_mode)
rc=rfc2646_parse(p, "\n", 1);
free(p);
return (rc);
}
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