diff options
Diffstat (limited to 'mail/em-stripsig-filter.c')
-rw-r--r-- | mail/em-stripsig-filter.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/mail/em-stripsig-filter.c b/mail/em-stripsig-filter.c new file mode 100644 index 0000000000..d70db037a8 --- /dev/null +++ b/mail/em-stripsig-filter.c @@ -0,0 +1,169 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* + * Authors: Jeffrey Stedfast <fejj@ximian.com> + * + * Copyright 2001-2004 Ximian, Inc. (www.ximian.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 Street #330, Boston, MA 02111-1307, USA. + * + */ + + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <string.h> + +#include "em-stripsig-filter.h" + + +static void em_stripsig_filter_class_init (EMStripSigFilterClass *klass); +static void em_stripsig_filter_init (EMStripSigFilter *filter, EMStripSigFilterClass *klass); + +static void filter_filter (CamelMimeFilter *filter, char *in, size_t len, size_t prespace, + char **out, size_t *outlen, size_t *outprespace); +static void filter_complete (CamelMimeFilter *filter, char *in, size_t len, size_t prespace, + char **out, size_t *outlen, size_t *outprespace); +static void filter_reset (CamelMimeFilter *filter); + + +static CamelMimeFilterClass *parent_class = NULL; + + +CamelType +em_stripsig_filter_get_type (void) +{ + static CamelType type = CAMEL_INVALID_TYPE; + + if (type == CAMEL_INVALID_TYPE) { + type = camel_type_register (camel_mime_filter_get_type (), + "EMStripSigFilter", + sizeof (EMStripSigFilter), + sizeof (EMStripSigFilterClass), + (CamelObjectClassInitFunc) em_stripsig_filter_class_init, + NULL, + (CamelObjectInitFunc) em_stripsig_filter_init, + NULL); + } + + return type; +} + + +static void +em_stripsig_filter_class_init (EMStripSigFilterClass *klass) +{ + CamelMimeFilterClass *filter_class = (CamelMimeFilterClass *) klass; + + parent_class = CAMEL_MIME_FILTER_CLASS (camel_type_get_global_classfuncs (camel_mime_filter_get_type ())); + + filter_class->reset = filter_reset; + filter_class->filter = filter_filter; + filter_class->complete = filter_complete; +} + +static void +em_stripsig_filter_init (EMStripSigFilter *filter, EMStripSigFilterClass *klass) +{ + filter->midline = FALSE; +} + +static void +strip_signature (CamelMimeFilter *filter, char *in, size_t len, size_t prespace, + char **out, size_t *outlen, size_t *outprespace, int flush) +{ + EMStripSigFilter *stripsig = (EMStripSigFilter *) filter; + register const char *inptr = in; + const char *inend = in + len; + const char *start = NULL; + + if (stripsig->midline) { + while (inptr < inend && *inptr != '\n') + inptr++; + + if (inptr < inend) { + stripsig->midline = FALSE; + inptr++; + } + } + + while (inptr < inend) { + if ((inend - inptr) >= 4 && !strncmp (inptr, "-- \n", 4)) { + start = inptr; + inptr += 4; + } else { + while (inptr < inend && *inptr != '\n') + inptr++; + + if (inptr == inend) { + stripsig->midline = TRUE; + break; + } + + inptr++; + } + } + + if (start != NULL) + inptr = start; + + if (!flush && inend > inptr) + camel_mime_filter_backup (filter, inptr, inend - inptr); + else if (!start) + inptr = inend; + + *out = in; + *outlen = inptr - in; + *outprespace = prespace; +} + +static void +filter_filter (CamelMimeFilter *filter, char *in, size_t len, size_t prespace, + char **out, size_t *outlen, size_t *outprespace) +{ + strip_signature (filter, in, len, prespace, out, outlen, outprespace, FALSE); +} + +static void +filter_complete (CamelMimeFilter *filter, char *in, size_t len, size_t prespace, + char **out, size_t *outlen, size_t *outprespace) +{ + strip_signature (filter, in, len, prespace, out, outlen, outprespace, TRUE); +} + +/* should this 'flush' outstanding state/data bytes? */ +static void +filter_reset (CamelMimeFilter *filter) +{ + EMStripSigFilter *stripsig = (EMStripSigFilter *) filter; + + stripsig->midline = FALSE; +} + + +/** + * em_stripsig_filter_new: + * + * Creates a new stripsig filter. + * + * Returns a new stripsig filter. + **/ +CamelMimeFilter * +em_stripsig_filter_new (void) +{ + return (CamelMimeFilter *) camel_object_new (EM_TYPE_STRIPSIG_FILTER); +} |