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authorDan Winship <danw@src.gnome.org>2000-06-10 00:26:33 +0800
committerDan Winship <danw@src.gnome.org>2000-06-10 00:26:33 +0800
commita5f9dc297a86591c5028833717933351ee00a382 (patch)
treeabf252633aaf23fccd97e57223c9c4692feff312 /mail
parent208d7b4cb63786323403ece08bbae88b2a1bd11d (diff)
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Redo things a bit so that whitespace-only text parts aren't displayed. (In
* mail-format.c: Redo things a bit so that whitespace-only text parts aren't displayed. (In particular, so that whitespace-only subparts of multipart/mixed aren't displayed as separate (empty) parts.) svn path=/trunk/; revision=3488
Diffstat (limited to 'mail')
-rw-r--r--mail/ChangeLog7
-rw-r--r--mail/mail-format.c248
2 files changed, 143 insertions, 112 deletions
diff --git a/mail/ChangeLog b/mail/ChangeLog
index 52cbfb239e..8c7a6daed5 100644
--- a/mail/ChangeLog
+++ b/mail/ChangeLog
@@ -1,3 +1,10 @@
+2000-06-09 Dan Winship <danw@helixcode.com>
+
+ * mail-format.c: Redo things a bit so that whitespace-only
+ text parts aren't displayed. (In particular, so that
+ whitespace-only subparts of multipart/mixed aren't displayed as
+ separate (empty) parts.)
+
2000-06-06 Dan Winship <danw@helixcode.com>
* mail-ops.c (fetch_mail):
diff --git a/mail/mail-format.c b/mail/mail-format.c
index 8c1f6c3088..729fa5f42a 100644
--- a/mail/mail-format.c
+++ b/mail/mail-format.c
@@ -41,57 +41,56 @@ struct mail_format_data {
GtkHTMLStream *stream;
};
-static void handle_text_plain (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_text_plain_flowed (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_text_enriched (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_text_html (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_image (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_multipart_mixed (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_multipart_related (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_multipart_alternative (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_multipart_appledouble (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_audio (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_message_rfc822 (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_message_external_body (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-
-static void handle_unknown_type (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
-static void handle_via_bonobo (CamelMimePart *part,
- const char *mime_type,
- struct mail_format_data *mfd);
+static gboolean handle_text_plain (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_text_plain_flowed (char *text,
+ struct mail_format_data *mfd);
+static gboolean handle_text_enriched (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_text_html (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_image (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_multipart_mixed (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_multipart_related (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_multipart_alternative (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_multipart_appledouble (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_audio (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_message_rfc822 (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_message_external_body (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+
+static gboolean handle_unknown_type (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
+static gboolean handle_via_bonobo (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
/* writes the header info for a mime message into an html stream */
static void write_headers (CamelMimeMessage *message,
struct mail_format_data *mfd);
/* dispatch html printing via mimetype */
-static void call_handler_function (CamelMimePart *part,
- struct mail_format_data *mfd);
+static gboolean call_handler_function (CamelMimePart *part,
+ struct mail_format_data *mfd);
static void free_urls (gpointer data);
@@ -172,8 +171,9 @@ get_cid (CamelMimePart *part, struct mail_format_data *mfd)
/* We're maintaining a hashtable of mimetypes -> functions;
* Those functions have the following signature...
*/
-typedef void (*mime_handler_fn) (CamelMimePart *part, const char *mime_type,
- struct mail_format_data *mfd);
+typedef gboolean (*mime_handler_fn) (CamelMimePart *part,
+ const char *mime_type,
+ struct mail_format_data *mfd);
static GHashTable *mime_function_table, *mime_fallback_table;
@@ -299,13 +299,13 @@ lookup_handler (const char *mime_type, gboolean *generic)
return handler_function;
}
-static void
+static gboolean
call_handler_function (CamelMimePart *part, struct mail_format_data *mfd)
{
CamelDataWrapper *wrapper;
char *mime_type;
mime_handler_fn handler_function = NULL;
- gboolean generic;
+ gboolean generic, output;
wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part));
mime_type = camel_data_wrapper_get_mime_type (wrapper);
@@ -313,11 +313,12 @@ call_handler_function (CamelMimePart *part, struct mail_format_data *mfd)
handler_function = lookup_handler (mime_type, &generic);
if (handler_function)
- (*handler_function) (part, mime_type, mfd);
+ output = (*handler_function) (part, mime_type, mfd);
else
- handle_unknown_type (part, mime_type, mfd);
+ output = handle_unknown_type (part, mime_type, mfd);
g_free (mime_type);
+ return output;
}
static void
@@ -420,21 +421,32 @@ write_headers (CamelMimeMessage *message, struct mail_format_data *mfd)
}
-
+/* Return the contents of a text-based data wrapper, or NULL if it
+ * contains only whitespace.
+ */
static char *
get_data_wrapper_text (CamelDataWrapper *data)
{
CamelStream *memstream;
GByteArray *ba;
- char *text;
+ char *text, *end;
ba = g_byte_array_new ();
memstream = camel_stream_mem_new_with_byte_array (ba);
camel_data_wrapper_write_to_stream (data, memstream);
- text = g_malloc (ba->len + 1);
- memcpy (text, ba->data, ba->len);
- text[ba->len] = '\0';
+
+ for (text = ba->data, end = ba->data + ba->len; text < end; text++) {
+ if (!isspace ((unsigned char)*text))
+ break;
+ }
+
+ if (text < end) {
+ text = g_malloc (ba->len + 1);
+ memcpy (text, ba->data, ba->len);
+ text[ba->len] = '\0';
+ } else
+ text = NULL;
gtk_object_unref (GTK_OBJECT (memstream));
return text;
@@ -444,7 +456,7 @@ get_data_wrapper_text (CamelDataWrapper *data)
* Mime handling functions
*----------------------------------------------------------------------*/
-static void
+static gboolean
handle_text_plain (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -454,42 +466,38 @@ handle_text_plain (CamelMimePart *part, const char *mime_type,
GMimeContentField *type;
const char *format;
+ text = get_data_wrapper_text (wrapper);
+ if (!text)
+ return FALSE;
+
/* Check for RFC 2646 flowed text. */
type = camel_mime_part_get_content_type (part);
format = gmime_content_field_get_parameter (type, "format");
- if (format && !g_strcasecmp (format, "flowed")) {
- handle_text_plain_flowed (part, mime_type, mfd);
- return;
- }
+ if (format && !g_strcasecmp (format, "flowed"))
+ return handle_text_plain_flowed (text, mfd);
mail_html_write (mfd->html, mfd->stream,
"\n<!-- text/plain -->\n<pre>\n");
- text = get_data_wrapper_text (wrapper);
- if (text && *text) {
- htmltext = e_text_to_html (text, E_TEXT_TO_HTML_CONVERT_URLS);
- mail_html_write (mfd->html, mfd->stream, "%s", htmltext);
- g_free (htmltext);
- }
+ htmltext = e_text_to_html (text, E_TEXT_TO_HTML_CONVERT_URLS);
g_free (text);
+ mail_html_write (mfd->html, mfd->stream, "%s", htmltext);
+ g_free (htmltext);
mail_html_write (mfd->html, mfd->stream, "</pre>\n");
+ return TRUE;
}
-static void
-handle_text_plain_flowed (CamelMimePart *part, const char *mime_type,
- struct mail_format_data *mfd)
+static gboolean
+handle_text_plain_flowed (char *buf, struct mail_format_data *mfd)
{
- CamelDataWrapper *wrapper =
- camel_medium_get_content_object (CAMEL_MEDIUM (part));
- char *buf, *text, *line, *eol, *p;
+ char *text, *line, *eol, *p;
int prevquoting = 0, quoting, len;
gboolean br_pending = FALSE;
mail_html_write (mfd->html, mfd->stream,
"\n<!-- text/plain, flowed -->\n<tt>\n");
- buf = get_data_wrapper_text (wrapper);
for (line = buf; *line; line = eol + 1) {
/* Process next line */
eol = strchr (line, '\n');
@@ -539,6 +547,7 @@ handle_text_plain_flowed (CamelMimePart *part, const char *mime_type,
g_free (buf);
mail_html_write (mfd->html, mfd->stream, "</tt>\n");
+ return TRUE;
}
static void
@@ -548,7 +557,7 @@ free_byte_array (GtkWidget *widget, gpointer user_data)
}
/* text/enriched (RFC 1896) or text/richtext (included in RFC 1341) */
-static void
+static gboolean
handle_text_enriched (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -556,9 +565,8 @@ handle_text_enriched (CamelMimePart *part, const char *mime_type,
CamelDataWrapper *wrapper =
camel_medium_get_content_object (CAMEL_MEDIUM (part));
GString *string;
- CamelStream *memstream;
GByteArray *ba;
- char *p, *xed;
+ char *text, *p, *xed;
int len, nofill = 0;
gboolean enriched;
@@ -595,6 +603,10 @@ handle_text_enriched (CamelMimePart *part, const char *mime_type,
g_hash_table_insert (translations, "np", "<hr>");
}
+ text = get_data_wrapper_text (wrapper);
+ if (!text)
+ return FALSE;
+
if (!g_strcasecmp (mime_type, "text/richtext")) {
enriched = FALSE;
mail_html_write (mfd->html, mfd->stream,
@@ -608,13 +620,7 @@ handle_text_enriched (CamelMimePart *part, const char *mime_type,
/* This is not great code, but I don't feel like fixing it right
* now. I mean, it's just text/enriched...
*/
-
- ba = g_byte_array_new ();
- memstream = camel_stream_mem_new_with_byte_array (ba);
- camel_data_wrapper_write_to_stream (wrapper, memstream);
- g_byte_array_append (ba, "", 1);
-
- p = ba->data;
+ p = text;
string = g_string_sized_new (2 * strlen (p));
while (p) {
@@ -695,7 +701,7 @@ handle_text_enriched (CamelMimePart *part, const char *mime_type,
p++;
}
}
- gtk_object_unref (GTK_OBJECT (memstream));
+ g_free (text);
ba = g_byte_array_new ();
g_byte_array_append (ba, (const guint8 *)string->str,
@@ -709,9 +715,11 @@ handle_text_enriched (CamelMimePart *part, const char *mime_type,
mail_html_write (mfd->html, mfd->stream,
"<iframe src=\"%s\" frameborder=0 scrolling=no>"
"</iframe>", xed);
+
+ return TRUE;
}
-static void
+static gboolean
handle_text_html (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -719,17 +727,19 @@ handle_text_html (CamelMimePart *part, const char *mime_type,
mail_html_write (mfd->html, mfd->stream,
"<iframe src=\"%s\" frameborder=0 scrolling=no>"
"</iframe>", get_cid (part, mfd));
+ return TRUE;
}
-static void
+static gboolean
handle_image (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
mail_html_write (mfd->html, mfd->stream, "<img src=\"%s\">",
get_cid (part, mfd));
+ return TRUE;
}
-static void
+static gboolean
handle_multipart_mixed (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -737,23 +747,26 @@ handle_multipart_mixed (CamelMimePart *part, const char *mime_type,
camel_medium_get_content_object (CAMEL_MEDIUM (part));
CamelMultipart *mp;
int i, nparts;
+ gboolean output = FALSE;
- g_return_if_fail (CAMEL_IS_MULTIPART (wrapper));
+ g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
mp = CAMEL_MULTIPART (wrapper);
nparts = camel_multipart_get_number (mp);
for (i = 0; i < nparts; i++) {
- if (i != 0)
+ if (i != 0 && output)
mail_html_write (mfd->html, mfd->stream, "<hr>\n");
part = camel_multipart_get_part (mp, i);
- call_handler_function (part, mfd);
+ output = call_handler_function (part, mfd);
}
+
+ return TRUE;
}
/* As seen in RFC 2387! */
-static void
+static gboolean
handle_multipart_related (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -765,7 +778,7 @@ handle_multipart_related (CamelMimePart *part, const char *mime_type,
const char *start;
int i, nparts;
- g_return_if_fail (CAMEL_IS_MULTIPART (wrapper));
+ g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
mp = CAMEL_MULTIPART (wrapper);
nparts = camel_multipart_get_number (mp);
@@ -794,7 +807,7 @@ handle_multipart_related (CamelMimePart *part, const char *mime_type,
if (!display_part) {
/* Oops. Hrmph. */
- handle_multipart_mixed (part, mime_type, mfd);
+ return handle_multipart_mixed (part, mime_type, mfd);
}
} else {
/* No start parameter, so it defaults to the first part. */
@@ -811,7 +824,7 @@ handle_multipart_related (CamelMimePart *part, const char *mime_type,
}
/* Now, display the displayed part. */
- call_handler_function (display_part, mfd);
+ return call_handler_function (display_part, mfd);
}
/* RFC 2046 says "display the last part that you are able to display". */
@@ -838,7 +851,7 @@ find_preferred_alternative (CamelMultipart *multipart)
return preferred_part;
}
-static void
+static gboolean
handle_multipart_alternative (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -847,18 +860,18 @@ handle_multipart_alternative (CamelMimePart *part, const char *mime_type,
CamelMultipart *multipart;
CamelMimePart *mime_part;
- g_return_if_fail (CAMEL_IS_MULTIPART (wrapper));
+ g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
multipart = CAMEL_MULTIPART (wrapper);
mime_part = find_preferred_alternative (multipart);
if (mime_part)
- call_handler_function (mime_part, mfd);
+ return call_handler_function (mime_part, mfd);
else
- handle_unknown_type (part, mime_type, mfd);
+ return handle_unknown_type (part, mime_type, mfd);
}
/* RFC 1740 */
-static void
+static gboolean
handle_multipart_appledouble (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -866,7 +879,7 @@ handle_multipart_appledouble (CamelMimePart *part, const char *mime_type,
camel_medium_get_content_object (CAMEL_MEDIUM (part));
CamelMultipart *multipart;
- g_return_if_fail (CAMEL_IS_MULTIPART (wrapper));
+ g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
multipart = CAMEL_MULTIPART (wrapper);
/* The first part is application/applefile and is not useful
@@ -874,7 +887,7 @@ handle_multipart_appledouble (CamelMimePart *part, const char *mime_type,
* likely it's application/octet-stream though.
*/
part = camel_multipart_get_part (multipart, 1);
- call_handler_function (part, mfd);
+ return call_handler_function (part, mfd);
}
static const char *
@@ -980,7 +993,7 @@ handle_mystery (CamelMimePart *part, struct mail_format_data *mfd,
mail_html_write (mfd->html, mfd->stream, "</td></tr></table>");
}
-static void
+static gboolean
handle_audio (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -997,24 +1010,28 @@ handle_audio (CamelMimePart *part, const char *mime_type,
handle_mystery (part, mfd, get_cid (part, mfd), "gnome-audio2.png",
id, "play it");
g_free (id);
+
+ return TRUE;
}
-static void
+static gboolean
handle_message_rfc822 (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
CamelDataWrapper *wrapper =
camel_medium_get_content_object (CAMEL_MEDIUM (part));
- g_return_if_fail (CAMEL_IS_MIME_MESSAGE (wrapper));
+ g_return_val_if_fail (CAMEL_IS_MIME_MESSAGE (wrapper), FALSE);
mail_html_write (mfd->html, mfd->stream, "<blockquote>");
mail_format_mime_message (CAMEL_MIME_MESSAGE (wrapper),
mfd->html, mfd->stream, mfd->root);
mail_html_write (mfd->html, mfd->stream, "</blockquote>");
+
+ return TRUE;
}
-static void
+static gboolean
handle_message_external_body (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -1120,9 +1137,10 @@ handle_message_external_body (CamelMimePart *part, const char *mime_type,
g_free (desc);
g_free (url);
+ return TRUE;
}
-static void
+static gboolean
handle_undisplayable (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -1137,9 +1155,11 @@ handle_undisplayable (CamelMimePart *part, const char *mime_type,
handle_mystery (part, mfd, get_cid (part, mfd), "gnome-question.png",
id, "save it to disk");
g_free (id);
+
+ return TRUE;
}
-static void
+static gboolean
handle_unknown_type (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -1149,14 +1169,14 @@ handle_unknown_type (CamelMimePart *part, const char *mime_type,
type = mail_identify_mime_part (part);
if (type) {
mime_handler_fn handler_function;
- gboolean generic;
+ gboolean generic, output;
handler_function = lookup_handler (type, &generic);
if (handler_function &&
handler_function != handle_unknown_type) {
- (*handler_function) (part, type, mfd);
+ output = (*handler_function) (part, type, mfd);
g_free (type);
- return;
+ return output;
}
} else
type = g_strdup (mime_type);
@@ -1164,9 +1184,11 @@ handle_unknown_type (CamelMimePart *part, const char *mime_type,
/* OK. Give up. */
handle_undisplayable (part, type, mfd);
g_free (type);
+
+ return TRUE;
}
-static void
+static gboolean
handle_via_bonobo (CamelMimePart *part, const char *mime_type,
struct mail_format_data *mfd)
{
@@ -1181,6 +1203,8 @@ handle_via_bonobo (CamelMimePart *part, const char *mime_type,
handle_undisplayable (part, mime_type, mfd);
mail_html_write (mfd->html, mfd->stream, "</object>");
+
+ return TRUE;
}
static char *