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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: rfc2646fwd.c,v 1.2 2003/03/07 00:47:31 mrsam Exp $";
struct rfc2646fwd *rfc2646fwd_alloc( int (*f)(const char *, size_t, void *),
void *a)
{
struct rfc2646fwd *p=(struct rfc2646fwd *)
calloc(1, sizeof(struct rfc2646fwd));
if (!p)
return (0);
p->handler=f;
p->voidarg=a;
return (p);
}
int rfc2646fwd_free(struct rfc2646fwd *p)
{
int rc=0;
if (p->prev_was_0depth)
rc= (*p->handler)("\n", 1, p->voidarg);
free(p);
return (rc);
}
int rfc2646fwd_handler(struct rfc2646parser *p, int isflowed, void *vp)
{
struct rfc2646fwd *r=(struct rfc2646fwd *)vp;
int rc;
/* Quoted text is copied verbatim. */
if (p->quote_depth > 0)
{
static const char quotes[]=">>>>>";
int n=p->quote_depth;
if (r->prev_was_0depth)
rc= (*r->handler)("\n", 1, r->voidarg);
r->prev_was_0depth=0;
while (n)
{
int i=sizeof(quotes)-1;
if (i > n)
i=n;
rc= (*r->handler)(quotes, i, r->voidarg);
if (rc)
return (rc);
n -= i;
}
rc=(*r->handler)(" ", 1, r->voidarg);
if (rc == 0 && p->linelen)
rc=(*r->handler)(p->line, p->linelen, r->voidarg);
if (rc == 0 && isflowed)
rc=(*r->handler)(" ", 1, r->voidarg);
if (rc == 0)
rc=(*r->handler)("\n", 1, r->voidarg);
return (rc);
}
if (p->linelen == 0)
{
/*
** If the previous line was flowed, insert two newlines here,
** else insert one.
*/
rc=(*r->handler)("\n\n", r->prev_was_0depth ? 2:1, r->voidarg);
r->prev_was_0depth=0;
return (rc);
}
if (!r->prev_was_0depth && p->linelen == 3 &&
strncmp(p->line, "-- ", 3) == 0 && !isflowed)
{
return ((*r->handler)(p->line, 3, r->voidarg));
}
if ((r->prev_was_0depth || p->line[0] == '>')
&& (rc=(*r->handler)(" ", 1, r->voidarg)) != 0)
return (rc);
rc=(*r->handler)(p->line, p->linelen, r->voidarg);
if (rc)
return (rc);
if (!isflowed)
{
rc=(*r->handler)("\n", 1, r->voidarg);
if (rc)
return (rc);
r->prev_was_0depth=0;
return (0);
}
r->prev_was_0depth=1;
return (0);
}
