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author | Dan Winship <danw@src.gnome.org> | 2000-06-13 00:49:59 +0800 |
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committer | Dan Winship <danw@src.gnome.org> | 2000-06-13 00:49:59 +0800 |
commit | 9573b501a807c22010a9ed50825db146296995eb (patch) | |
tree | e9287c0480233d69c32a9f1edae28675f54bdaaa /camel/camel-mime-filter-crlf.c | |
parent | 038f94bb30e7b0a45fbd26e5115a4d04caa1a270 (diff) | |
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New filter to do CRLF<->LF conversion. (Currently only tested in the
* camel-mime-filter-crlf.c: New filter to do CRLF<->LF conversion.
(Currently only tested in the LF->CRLF direction.)
* camel-mime-part.c (write_to_stream): if content-type is text,
and it's QP or B64 encoded, pass through the CRLF filter before
the other filter to satisfy the "canonical encoding" rules in the
MIME spec.
svn path=/trunk/; revision=3529
Diffstat (limited to 'camel/camel-mime-filter-crlf.c')
-rw-r--r-- | camel/camel-mime-filter-crlf.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/camel/camel-mime-filter-crlf.c b/camel/camel-mime-filter-crlf.c new file mode 100644 index 0000000000..d39d00887f --- /dev/null +++ b/camel/camel-mime-filter-crlf.c @@ -0,0 +1,132 @@ +/* + * Copyright (C) 2000 Helix Code, Inc. + * + * Authors: Dan Winship <danw@helixcode.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library 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 Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "camel-mime-filter-crlf.h" + +static void filter (CamelMimeFilter *f, char *in, size_t len, size_t prespace, + char **out, size_t *outlen, size_t *outprespace); +static void complete (CamelMimeFilter *f, char *in, size_t len, + size_t prespace, char **out, size_t *outlen, + size_t *outprespace); +static void reset (CamelMimeFilter *f); + + +static void +camel_mime_filter_crlf_class_init (CamelMimeFilterCRLFClass *klass) +{ + CamelMimeFilterClass *mime_filter_class = + (CamelMimeFilterClass *) klass; + + mime_filter_class->filter = filter; + mime_filter_class->complete = complete; + mime_filter_class->reset = reset; +} + +GtkType +camel_mime_filter_crlf_get_type (void) +{ + static GtkType type = 0; + + if (!type) { + GtkTypeInfo type_info = { + "CamelMimeFilterCRLF", + sizeof (CamelMimeFilterCRLF), + sizeof (CamelMimeFilterCRLFClass), + (GtkClassInitFunc) camel_mime_filter_crlf_class_init, + (GtkObjectInitFunc) NULL, + /* reserved_1 */ NULL, + /* reserved_2 */ NULL, + (GtkClassInitFunc) NULL + }; + + type = gtk_type_unique (camel_mime_filter_get_type (), + &type_info); + } + + return type; +} + +static void +filter (CamelMimeFilter *f, char *in, size_t len, size_t prespace, + char **out, size_t *outlen, size_t *outprespace) +{ + CamelMimeFilterCRLF *crlf = (CamelMimeFilterCRLF *)f; + char *p, *q; + + if (crlf->direction == CAMEL_MIME_FILTER_CRLF_ENCODE) { + camel_mime_filter_set_size (f, 2 * len, FALSE); + + p = in; + q = f->outbuf; + while (p < in + len) { + if (*p == '\n') + *q++ = '\r'; + *q++ = *p++; + } + } else { + camel_mime_filter_set_size (f, len, FALSE); + + p = in; + q = f->outbuf; + while (p < in + len) { + if (*p == '\r') + crlf->saw_cr = TRUE; + else { + if (crlf->saw_cr) { + if (*p != '\n') + *q++ = '\r'; + crlf->saw_cr = FALSE; + } + *q++ = *p++; + } + } + } + + *out = f->outbuf; + *outlen = q - f->outbuf; + *outprespace = f->outpre; +} + +static void +complete (CamelMimeFilter *f, char *in, size_t len, size_t prespace, + char **out, size_t *outlen, size_t *outprespace) +{ + if (len) + filter (f, in, len, prespace, out, outlen, outprespace); +} + +static void +reset (CamelMimeFilter *f) +{ + CamelMimeFilterCRLF *crlf = (CamelMimeFilterCRLF *)f; + + crlf->saw_cr = FALSE; +} + +CamelMimeFilter * +camel_mime_filter_crlf_new (CamelMimeFilterCRLFDirection direction) +{ + CamelMimeFilterCRLF *crlf = gtk_type_new (CAMEL_MIME_FILTER_CRLF_TYPE); + + crlf->direction = direction; + crlf->saw_cr = FALSE; + + return (CamelMimeFilter *)crlf; +} |