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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Copyright (C) 2000 Ximian Inc.
*
* Authors: Michael Zucchi <notzed@ximian.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* 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.
*/
#include <string.h>
#include "camel-mime-filter-from.h"
#define d(x)
struct _CamelMimeFilterFromPrivate {
};
#define _PRIVATE(o) (((CamelMimeFilterFrom *)(o))->priv)
static void camel_mime_filter_from_class_init (CamelMimeFilterFromClass *klass);
static void camel_mime_filter_from_init (CamelMimeFilterFrom *obj);
static CamelMimeFilterClass *camel_mime_filter_from_parent;
CamelType
camel_mime_filter_from_get_type (void)
{
static CamelType type = CAMEL_INVALID_TYPE;
if (type == CAMEL_INVALID_TYPE) {
type = camel_type_register (camel_mime_filter_get_type (), "CamelMimeFilterFrom",
sizeof (CamelMimeFilterFrom),
sizeof (CamelMimeFilterFromClass),
(CamelObjectClassInitFunc) camel_mime_filter_from_class_init,
NULL,
(CamelObjectInitFunc) camel_mime_filter_from_init,
NULL);
}
return type;
}
struct fromnode {
struct fromnode *next;
char *pointer;
};
static void
complete(CamelMimeFilter *mf, char *in, size_t len, size_t prespace, char **out, size_t *outlen, size_t *outprespace)
{
*out = in;
*outlen = len;
*outprespace = prespace;
}
/* Yes, it is complicated ... */
static void
filter(CamelMimeFilter *mf, char *in, size_t len, size_t prespace, char **out, size_t *outlen, size_t *outprespace)
{
CamelMimeFilterFrom *f = (CamelMimeFilterFrom *)mf;
register char *inptr, *inend;
int left;
int midline = f->midline;
int fromcount = 0;
struct fromnode *head = NULL, *tail = (struct fromnode *)&head, *node;
char *outptr;
inptr = in;
inend = inptr+len;
d(printf("Filtering '%.*s'\n", len, in));
/* first, see if we need to escape any from's */
while (inptr<inend) {
register int c = -1;
if (midline)
while (inptr < inend && (c = *inptr++) != '\n')
;
if (c == '\n' || !midline) {
left = inend-inptr;
if (left > 0) {
midline = TRUE;
if (left < 5) {
if (inptr[0] == 'F') {
camel_mime_filter_backup(mf, inptr, left);
midline = FALSE;
inend = inptr;
break;
}
} else {
if (!strncmp(inptr, "From ", 5)) {
fromcount++;
/* yes, we do alloc them on the stack ... at most we're going to get
len / 7 of them anyway */
node = alloca(sizeof(*node));
node->pointer = inptr;
node->next = NULL;
tail->next = node;
tail = node;
inptr += 5;
}
}
} else {
/* \n is at end of line, check next buffer */
midline = FALSE;
}
}
}
f->midline = midline;
if (fromcount > 0) {
camel_mime_filter_set_size(mf, len + fromcount, FALSE);
node = head;
inptr = in;
outptr = mf->outbuf;
while (node) {
memcpy(outptr, inptr, node->pointer - inptr);
outptr += node->pointer - inptr;
*outptr++ = '>';
inptr = node->pointer;
node = node->next;
}
memcpy(outptr, inptr, inend - inptr);
outptr += inend - inptr;
*out = mf->outbuf;
*outlen = outptr - mf->outbuf;
*outprespace = mf->outbuf - mf->outreal;
d(printf("Filtered '%.*s'\n", *outlen, *out));
} else {
*out = in;
*outlen = inend - in;
*outprespace = prespace;
d(printf("Filtered '%.*s'\n", *outlen, *out));
}
}
static void
camel_mime_filter_from_class_init (CamelMimeFilterFromClass *klass)
{
CamelMimeFilterClass *filter_class = (CamelMimeFilterClass *) klass;
camel_mime_filter_from_parent = CAMEL_MIME_FILTER_CLASS (camel_type_get_global_classfuncs (camel_mime_filter_get_type ()));
filter_class->filter = filter;
filter_class->complete = complete;
}
static void
camel_mime_filter_from_init (CamelMimeFilterFrom *obj)
{
struct _CamelMimeFilterFromPrivate *p;
p = _PRIVATE(obj) = g_malloc0(sizeof(*p));
obj->midline = FALSE;
}
/**
* camel_mime_filter_from_new:
*
* Create a new CamelMimeFilterFrom object.
*
* Return value: A new CamelMimeFilterFrom widget.
**/
CamelMimeFilterFrom *
camel_mime_filter_from_new (void)
{
CamelMimeFilterFrom *new = CAMEL_MIME_FILTER_FROM ( camel_object_new (camel_mime_filter_from_get_type ()));
return new;
}
#if 0
#include <stdio.h>
int main(int argc, char **argv)
{
CamelMimeFilterFrom *f;
char *buffer;
int len, prespace;
g_tk_init(&argc, &argv);
f = camel_mime_filter_from_new();
buffer = "This is a test\nFrom Someone\nTo someone. From Someone else, From\n From blah\nFromblah\nBye! \nFrom ";
len = strlen(buffer);
prespace = 0;
printf("input = '%.*s'\n", len, buffer);
camel_mime_filter_filter(f, buffer, len, prespace, &buffer, &len, &prespace);
printf("output = '%.*s'\n", len, buffer);
buffer = "";
len = 0;
prespace = 0;
camel_mime_filter_complete(f, buffer, len, prespace, &buffer, &len, &prespace);
printf("complete = '%.*s'\n", len, buffer);
return 0;
}
#endif
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