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/
usr/
src/
maildrop-2.2.0/
rfc2045/
- drwxr-xr-x
|
Viewing file:  rfc2045acprep.c (2.03 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/*
** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for
** distribution information.
*/
#include "rfc2045.h"
#include <ctype.h>
#include <string.h>
/* $Id: rfc2045acprep.c,v 1.2 1999/12/06 13:29:02 mrsam Exp $ */
static void start_rwprep(struct rfc2045 *);
static void do_rwprep(const char *, size_t);
static void end_rwprep();
static struct rfc2045ac rfc2045acprep={
&start_rwprep,
&do_rwprep,
&end_rwprep};
static struct rfc2045 *currwp;
static int curlinepos=0;
typedef enum {
raw,
quotedprint,
qpseeneq,
qpseeneqh,
base64} state_t;
static state_t curstate;
static int statechar;
#define h2nyb(c) ( (c) >= 'a' && (c) <= 'f' ? (c)-('a'-10): \
(c) >= 'A' && (c) <= 'F' ? (c)-('A'-10): (c)-'0')
struct rfc2045 *rfc2045_alloc_ac()
{
struct rfc2045 *p=rfc2045_alloc();
if (p) p->rfc2045acptr= &rfc2045acprep;
currwp=0;
return (p);
}
static void start_rwprep(struct rfc2045 *p)
{
currwp=p;
curlinepos=0;
curstate=raw;
if (p->content_transfer_encoding)
{
if (strcmp(p->content_transfer_encoding,
"quoted-printable") == 0)
curstate=quotedprint;
else if (strcmp(p->content_transfer_encoding, "base64") == 0)
curstate=base64;
}
}
static void do_rwprep(const char * p, size_t n)
{
if (!currwp) return;
for ( ; n; --n, ++p)
switch (curstate) {
case quotedprint:
if (*p == '=')
{
curstate=qpseeneq;
continue;
}
/* FALLTHRU */
case raw:
if (*p == '\r' || *p == '\n')
curlinepos=0;
else if (++curlinepos > 500)
currwp->haslongline=1;
if ((unsigned char)*p >= 127)
currwp->has8bitchars=1;
break;
case qpseeneq:
if (*p == '\n')
{
curstate=quotedprint;
continue;
}
if (isspace((int)(unsigned char)*p)) continue; /* Ignore WSP */
statechar=*p;
curstate=qpseeneqh;
continue;
case qpseeneqh:
curstate=quotedprint;
if ( (unsigned char)
( (h2nyb(statechar) << 4) + h2nyb(*p) ) >= 127
) currwp->has8bitchars=1;
if (++curlinepos > 500)
currwp->haslongline=1;
continue;
case base64:
break;
}
}
static void end_rwprep()
{
}
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