Updated to convert to/from the correct charset (since content is no longer

2003-07-17  Jeffrey Stedfast  <fejj@ximian.com>

	* camel-mime-message.c (find_best_encoding): Updated to convert
	to/from the correct charset (since content is no longer
	necessarily in UTF-8).
	(best_encoding): Free the charset string when we're done with it.

svn path=/trunk/; revision=21863

2 files changed, 33 insertions, 30 deletions

diff --git a/camel/ChangeLog b/camel/ChangeLog
index bb654f24bc..8a607b8bfe 100644
--- a/camel/ChangeLog
+++ b/camel/ChangeLog
@@ -1,5 +1,10 @@
 2003-07-17  Jeffrey Stedfast  <fejj@ximian.com>
 
+	* camel-mime-message.c (find_best_encoding): Updated to convert
+	to/from the correct charset (since content is no longer
+	necessarily in UTF-8).
+	(best_encoding): Free the charset string when we're done with it.
+
 	* camel-stream-fs.c (stream_read): Increment the seekable stream
 	position by the number of bytes read. Oops.
 	(stream_write): Same here.
diff --git a/camel/camel-mime-message.c b/camel/camel-mime-message.c
index 3bbce53e68..0d5824ce4c 100644
--- a/camel/camel-mime-message.c
+++ b/camel/camel-mime-message.c
@@ -673,17 +673,17 @@ camel_mime_message_has_8bit_parts (CamelMimeMessage *msg)
 static CamelMimePartEncodingType
 find_best_encoding (CamelMimePart *part, CamelBestencRequired required, CamelBestencEncoding enctype, char **charsetp)
 {
-	const char *charsetin = NULL;
-	char *charset = NULL;
-	CamelStream *null;
-	CamelStreamFilter *filter;
 	CamelMimeFilterCharset *charenc = NULL;
+	CamelMimePartEncodingType encoding;
 	CamelMimeFilterBestenc *bestenc;
-	int idb, idc = -1;
-	gboolean istext;
 	unsigned int flags, callerflags;
-	CamelMimePartEncodingType encoding;
 	CamelDataWrapper *content;
+	CamelStreamFilter *filter;
+	const char *charsetin;
+	char *charset = NULL;
+	CamelStream *null;
+	int idb, idc = -1;
+	gboolean istext;
 	
 	/* we use all these weird stream things so we can do it with streams, and
 	   not have to read the whole lot into memory - although i have a feeling
@@ -717,12 +717,10 @@ find_best_encoding (CamelMimePart *part, CamelBestencRequired required, CamelBes
 	null = (CamelStream *)camel_stream_null_new ();
 	filter = camel_stream_filter_new_with_stream (null);
 	
-	/* if we're not looking for the best charset, then use the one we have */
-	if (istext && (required & CAMEL_BESTENC_GET_CHARSET) == 0
-	    && (charsetin = header_content_type_param (part->content_type, "charset"))) {
-		/* if libunicode doesn't support it, we dont really have utf8 anyway, so
-		   we dont need a converter */
-		charenc = camel_mime_filter_charset_new_convert ("UTF-8", charsetin);
+	/* if we're looking for the best charset, then we need to convert to UTF-8 */
+	if (istext && (required & CAMEL_BESTENC_GET_CHARSET) != 0
+	    && (charsetin = header_content_type_param (content->mime_type, "charset"))) {
+		charenc = camel_mime_filter_charset_new_convert (charsetin, "UTF-8");
 		if (charenc != NULL)
 			idc = camel_stream_filter_add (filter, (CamelMimeFilter *)charenc);
 		charsetin = NULL;
@@ -735,31 +733,29 @@ find_best_encoding (CamelMimePart *part, CamelBestencRequired required, CamelBes
 	camel_stream_filter_remove (filter, idb);
 	if (idc != -1) {
 		camel_stream_filter_remove (filter, idc);
-		camel_object_unref ((CamelObject *)charenc);
+		camel_object_unref (charenc);
 		charenc = NULL;
 	}
 	
-	if (istext)
+	if (istext && (required & CAMEL_BESTENC_GET_CHARSET) != 0) {
 		charsetin = camel_mime_filter_bestenc_get_best_charset (bestenc);
-	
-	d(printf("charsetin = %s\n", charsetin ? charsetin : "(null)"));
-	
-	/* if we have US-ASCII, or we're not doing text, we dont need to bother with the rest */
-	if (charsetin != NULL && (required & CAMEL_BESTENC_GET_CHARSET) != 0) {
+		d(printf("best charset = %s\n", charsetin ? charsetin : "(null)"));
 		charset = g_strdup (charsetin);
 		
+		charsetin = header_content_type_param (content->mime_type, "charset");
+	} else {
+		charset = NULL;
+	}
+	
+	/* if we have US-ASCII, or we're not doing text, we dont need to bother with the rest */
+	if (istext && charsetin && charset && (required & CAMEL_BESTENC_GET_CHARSET) != 0) {
 		d(printf("have charset, trying conversion/etc\n"));
 		
 		/* now that 'bestenc' has told us what the best encoding is, we can use that to create
 		   a charset conversion filter as well, and then re-add the bestenc to filter the
 		   result to find the best encoding to use as well */
 		
-		charenc = camel_mime_filter_charset_new_convert ("UTF-8", charset);
-		
-		/* eek, libunicode doesn't undertand this charset anyway, then the 'utf8' we
-		   thought we had is really the native format, in which case, we just treat
-		   it as binary data (and take the result we have so far) */
-		
+		charenc = camel_mime_filter_charset_new_convert (charsetin, charset);
 		if (charenc != NULL) {
 			/* otherwise, try another pass, converting to the real charset */
 			
@@ -773,15 +769,15 @@ find_best_encoding (CamelMimePart *part, CamelBestencRequired required, CamelBes
 			/* and write it to the new stream */
 			camel_data_wrapper_write_to_stream (content, (CamelStream *)filter);
 			
-			camel_object_unref ((CamelObject *)charenc);
+			camel_object_unref (charenc);
 		}
 	}
 	
 	encoding = camel_mime_filter_bestenc_get_best_encoding (bestenc, enctype);
 	
-	camel_object_unref ((CamelObject *)filter);
-	camel_object_unref ((CamelObject *)bestenc);
-	camel_object_unref ((CamelObject *)null);
+	camel_object_unref (filter);
+	camel_object_unref (bestenc);
+	camel_object_unref (null);
 	
 	d(printf("done, best encoding = %d\n", encoding));
 	
@@ -833,6 +829,8 @@ best_encoding (CamelMimeMessage *msg, CamelMimePart *part, void *datap)
 				}
 			}
 		}
+		
+		g_free (charset);
 	}
 	
 	return TRUE;