diff options
Diffstat (limited to 'camel/camel-simple-data-wrapper.c')
| -rw-r--r-- | camel/camel-simple-data-wrapper.c | 150 |
1 files changed, 148 insertions, 2 deletions
diff --git a/camel/camel-simple-data-wrapper.c b/camel/camel-simple-data-wrapper.c index 7f128116dc..d368a4ddfd 100644 --- a/camel/camel-simple-data-wrapper.c +++ b/camel/camel-simple-data-wrapper.c @@ -4,8 +4,8 @@ /* * - * Author : - * Bertrand Guiheneuf <bertrand@helixcode.com> + * Authors: Bertrand Guiheneuf <bertrand@helixcode.com> + * Michael Zucchi <notzed@helixcode.com> * * Copyright 1999, 2000 Helix Code, Inc. (http://www.helixcode.com) * @@ -28,6 +28,17 @@ #include "camel-simple-data-wrapper.h" #include "camel-simple-data-wrapper-stream.h" +#include <camel/camel-stream-mem.h> +#include "camel-mime-utils.h" +#include <camel/camel-mime-filter.h> +#include <camel/camel-mime-filter-basic.h> +#include <camel/camel-mime-filter-charset.h> +#include <camel/camel-stream-filter.h> +#include <camel/camel-seekable-substream.h> + +#include <string.h> + +#define d(x) static CamelDataWrapperClass *parent_class = NULL; @@ -40,6 +51,7 @@ static void write_to_stream (CamelDataWrapper *data_wrapper CamelStream *stream); static void finalize (GtkObject *object); static CamelStream * get_output_stream (CamelDataWrapper *data_wrapper); +static void construct_from_parser(CamelDataWrapper *dw, CamelMimeParser *mp); @@ -59,6 +71,8 @@ camel_simple_data_wrapper_class_init (CamelSimpleDataWrapperClass *camel_simple_ camel_data_wrapper_class->construct_from_stream = construct_from_stream; camel_data_wrapper_class->get_output_stream = get_output_stream; + camel_data_wrapper_class->construct_from_parser = construct_from_parser; + gtk_object_class->finalize = finalize; } @@ -210,3 +224,135 @@ get_output_stream (CamelDataWrapper *data_wrapper) return parent_class->get_output_stream (data_wrapper); } + +/* simple data wrapper */ +static void +construct_from_parser(CamelDataWrapper *dw, CamelMimeParser *mp) +{ + GByteArray *buffer; + char *buf; + int len; + off_t start, end; + CamelMimeFilter *fdec = NULL, *fch = NULL; + struct _header_content_type *ct; + int decid=-1, chrid=-1, cache=FALSE; + CamelStream *source; + char *encoding; + + d(printf("constructing simple-data-wrapper\n")); + + /* Ok, try and be smart. If we're storing a small message (typical) convert it, + and store it in memory as we parse it ... if not, throw away the conversion + and scan till the end ... */ + + /* if we can't seek, dont have a stream/etc, then we must cache it */ + source = camel_mime_parser_stream(mp); + gtk_object_ref((GtkObject *)source); + if (source == NULL + || !CAMEL_IS_SEEKABLE_STREAM(source)) + cache = TRUE; + + /* first, work out conversion, if any, required, we dont care about what we dont know about */ + encoding = header_content_encoding_decode(camel_mime_parser_header(mp, "content-transfer-encoding", NULL)); + if (encoding) { + if (!strcasecmp(encoding, "base64")) { + d(printf("Adding base64 decoder ...\n")); + fdec = (CamelMimeFilter *)camel_mime_filter_basic_new_type(CAMEL_MIME_FILTER_BASIC_BASE64_DEC); + decid = camel_mime_parser_filter_add(mp, fdec); + } else if (!strcasecmp(encoding, "quoted-printable")) { + d(printf("Adding quoted-printable decoder ...\n")); + fdec = (CamelMimeFilter *)camel_mime_filter_basic_new_type(CAMEL_MIME_FILTER_BASIC_QP_DEC); + decid = camel_mime_parser_filter_add(mp, fdec); + } + g_free(encoding); + } + + /* if we're doing text, then see if we have to convert it to UTF8 as well */ + ct = camel_mime_parser_content_type(mp); + if (header_content_type_is(ct, "text", "*")) { + const char *charset = header_content_type_param(ct, "charset"); + if (charset!=NULL + && !(strcasecmp(charset, "us-ascii")==0 + || strcasecmp(charset, "utf-8")==0)) { + d(printf("Adding conversion filter from %s to utf-8\n", charset)); + fch = (CamelMimeFilter *)camel_mime_filter_charset_new_convert(charset, "utf-8"); + if (fch) { + chrid = camel_mime_parser_filter_add(mp, (CamelMimeFilter *)fch); + } else { + g_warning("Cannot convert '%s' to 'utf-8', message display may be corrupt", charset); + } + } + + } + + buffer = g_byte_array_new(); + + /* write to a memory buffer or something??? */ + start = camel_mime_parser_tell(mp); + while ( camel_mime_parser_step(mp, &buf, &len) != HSCAN_BODY_END ) { + if (buffer) { + if (buffer->len > 20480 && !cache) { + /* is this a 'big' message? Yes? We dont want to convert it all then.*/ + camel_mime_parser_filter_remove(mp, decid); + camel_mime_parser_filter_remove(mp, chrid); + decid = -1; + chrid = -1; + g_byte_array_free(buffer, TRUE); + buffer = NULL; + } else { + g_byte_array_append(buffer, buf, len); + } + } + } + + if (buffer) { + CamelStream *mem; + d(printf("Small message part, kept in memory!\n")); + mem = camel_stream_mem_new_with_byte_array(buffer, CAMEL_STREAM_MEM_READ); + camel_data_wrapper_set_output_stream (dw, mem); + } else { + CamelSeekableSubstream *sub; + CamelStreamFilter *filter; + + d(printf("Big message part, left on disk ...\n")); + + end = camel_mime_parser_tell(mp); + sub = (CamelSeekableSubstream *)camel_seekable_substream_new_with_seekable_stream_and_bounds ((CamelSeekableStream *)source, start, end); + if (fdec || fch) { + filter = camel_stream_filter_new_with_stream((CamelStream *)sub); + if (fdec) { + camel_mime_filter_reset(fdec); + camel_stream_filter_add(filter, fdec); + } + if (fch) { + camel_mime_filter_reset(fdec); + camel_stream_filter_add(filter, fch); + } + camel_data_wrapper_set_output_stream (dw, (CamelStream *)filter); + } else { + camel_data_wrapper_set_output_stream (dw, (CamelStream *)sub); + } + } + + camel_mime_parser_filter_remove(mp, decid); + camel_mime_parser_filter_remove(mp, chrid); + + if (fdec) + gtk_object_unref((GtkObject *)fdec); + if (fch) + gtk_object_unref((GtkObject *)fch); + gtk_object_unref((GtkObject *)source); + + /* FIXME: lookup in headers for content-type/encoding */ +#if 0 + /* trivial, mem-based ... */ + buffer = g_byte_array_new(); + start = camel_mime_parser_tell(mp); + while ( camel_mime_parser_step(mp, &buf, &len) != HSCAN_BODY_END ) { + g_byte_array_append(buffer, buf, len); + } + end = camel_mime_parser_tell(mp); + mem = camel_stream_mem_new_with_byte_array(buffer, CAMEL_STREAM_MEM_READ); + camel_data_wrapper_set_output_stream (dw, mem); +#endif +} |