[RFC PATCH 5/5] show: Simplify new text formatter code
Dmitry Kurochkin
dmitry.kurochkin at gmail.com
Mon Jan 23 17:49:52 PST 2012
On Wed, 11 Jan 2012 20:49:33 -0500, Austin Clements <amdragon at MIT.EDU> wrote:
> This makes the text formatter take advantage of the new code
> structure. The previously duplicated header logic is now unified,
> several things that we used to compute repeatedly across different
> callbacks are now computed once, and the code is generally simplified.
>
> Unifying the header logic causes this to format some dates slightly
> differently, so the two affected test cases are updated.
Thanks for these patches, Austin. They are a definite improvement for
notmuch show code. I hope it would soon get pushed to master. And I
hope more patches would follow :)
Few minor comments below.
> ---
> notmuch-show.c | 84 ++++++++++++----------------------------------------
> test/crypto | 2 +-
> test/thread-naming | 16 +++++-----
> 3 files changed, 28 insertions(+), 74 deletions(-)
>
> diff --git a/notmuch-show.c b/notmuch-show.c
> index 3241965..1689222 100644
> --- a/notmuch-show.c
> +++ b/notmuch-show.c
> @@ -175,67 +175,42 @@ format_part_text (const void *ctx, mime_node_t *node,
> GMimeObject *meta = node->envelope_part ?
> GMIME_OBJECT (node->envelope_part) : node->part;
> GMimeContentType *content_type = g_mime_object_get_content_type (meta);
> + GMimeContentDisposition *disposition =
> + g_mime_object_get_content_disposition (meta);
> + notmuch_bool_t attachment = disposition &&
> + strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0;
If I did not miss anything, attachment is used only as following:
attachment ? "attachment" : "part"
Please make it const char[] and set to "attachment" or "part".
> + notmuch_bool_t leaf = GMIME_IS_PART (node->part);
Please add const where possible to local variables (e.g. attachment, leaf).
> int i;
>
> if (node->envelope_file) {
> notmuch_message_t *message = node->envelope_file;
> - const char *headers[] = {
> - "Subject", "From", "To", "Cc", "Bcc", "Date"
> - };
> - const char *name, *value;
> - unsigned int i;
>
> - printf ("\fmessage{ ");
> - printf ("id:%s depth:%d match:%d filename:%s\n",
> + printf ("\fmessage{ id:%s depth:%d match:%d filename:%s\n",
> notmuch_message_get_message_id (message),
> indent,
> notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH),
> notmuch_message_get_filename (message));
> -
> - printf ("\fheader{\n");
> -
> - printf ("%s\n", _get_one_line_summary (ctx, message));
> -
> - for (i = 0; i < ARRAY_SIZE (headers); i++) {
> - name = headers[i];
> - value = notmuch_message_get_header (message, name);
> - if (value && strlen (value))
> - printf ("%s: %s\n", name, value);
> - }
> - printf ("\fheader}\n");
Yay! Only one header-printing code left :)
> } else {
> - GMimeContentDisposition *disposition = g_mime_object_get_content_disposition (meta);
> const char *cid = g_mime_object_get_content_id (meta);
> + const char *filename = leaf ?
> + g_mime_part_get_filename (GMIME_PART (node->part)) : NULL;
>
> - if (disposition &&
> - strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0)
> - {
> - printf ("\fattachment{ ID: %d", node->part_num);
> -
> - } else {
> -
> - printf ("\fpart{ ID: %d", node->part_num);
> - }
> -
> - if (GMIME_IS_PART (node->part))
> - {
> - const char *filename = g_mime_part_get_filename (GMIME_PART (node->part));
> - if (filename)
> - printf (", Filename: %s", filename);
> - }
> -
> + printf ("\f%s{ ID: %d", attachment ? "attachment" : "part", node->part_num);
> + if (filename)
I always forget about it, can we declare variables inside if condition
like in C++? I.e.:
if (const char *filename = leaf ? g_mime_part_get_filename (GMIME_PART (node->part)) : NULL)
If yes, I would prefer to use this style where possible.
> + printf (", Filename: %s", filename);
> if (cid)
> printf (", Content-id: %s", cid);
> -
I would revert blank line changes. But I do not insist :)
> printf (", Content-type: %s\n", g_mime_content_type_to_string (content_type));
> }
>
> - if (node->envelope_part) {
> + if (GMIME_IS_MESSAGE (node->part)) {
This condition is repeated at least twice. Please consider moving the
message variable below to the top level and using it in the conditions.
Regards,
Dmitry
> GMimeMessage *message = GMIME_MESSAGE (node->part);
> InternetAddressList *recipients;
> const char *recipients_string;
>
> printf ("\fheader{\n");
> + if (node->envelope_file)
> + printf ("%s\n", _get_one_line_summary (ctx, node->envelope_file));
> printf ("Subject: %s\n", g_mime_message_get_subject (message));
> printf ("From: %s\n", g_mime_message_get_sender (message));
> recipients = g_mime_message_get_recipients (message, GMIME_RECIPIENT_TYPE_TO);
> @@ -248,9 +223,11 @@ format_part_text (const void *ctx, mime_node_t *node,
> printf ("Cc: %s\n", recipients_string);
> printf ("Date: %s\n", g_mime_message_get_date_as_string (message));
> printf ("\fheader}\n");
> +
> + printf ("\fbody{\n");
> }
>
> - if (!node->envelope_file) {
> + if (leaf) {
> if (g_mime_content_type_is_type (content_type, "text", "*") &&
> !g_mime_content_type_is_type (content_type, "text", "html"))
> {
> @@ -258,24 +235,12 @@ format_part_text (const void *ctx, mime_node_t *node,
> g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream_stdout), FALSE);
> show_text_part_content (node->part, stream_stdout);
> g_object_unref(stream_stdout);
> - }
> - else if (g_mime_content_type_is_type (content_type, "multipart", "*") ||
> - g_mime_content_type_is_type (content_type, "message", "rfc822"))
> - {
> - /* Do nothing for multipart since its content will be printed
> - * when recursing. */
> - }
> - else
> - {
> + } else {
> printf ("Non-text part: %s\n",
> g_mime_content_type_to_string (content_type));
> }
> }
>
> - if (GMIME_IS_MESSAGE (node->part)) {
> - printf ("\fbody{\n");
> - }
> -
> for (i = 0; i < node->nchildren; i++)
> format_part_text (ctx, mime_node_child (node, i), indent, params);
>
> @@ -286,18 +251,7 @@ format_part_text (const void *ctx, mime_node_t *node,
> if (node->envelope_file) {
> printf ("\fmessage}\n");
> } else {
> - GMimeContentDisposition *disposition;
> -
> - disposition = g_mime_object_get_content_disposition (meta);
> - if (disposition &&
> - strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0)
> - {
> - printf ("\fattachment}\n");
> - }
> - else
> - {
> - printf ("\fpart}\n");
> - }
> + printf ("\f%s}\n", attachment ? "attachment" : "part");
> }
> }
>
> diff --git a/test/crypto b/test/crypto
> index 0af4aa8..6723ef8 100755
> --- a/test/crypto
> +++ b/test/crypto
> @@ -157,7 +157,7 @@ Notmuch Test Suite <test_suite at notmuchmail.org> (2000-01-01) (encrypted inbox)
> Subject: test encrypted message 001
> From: Notmuch Test Suite <test_suite at notmuchmail.org>
> To: test_suite at notmuchmail.org
> -Date: 01 Jan 2000 12:00:00 -0000
> +Date: Sat, 01 Jan 2000 12:00:00 +0000
> header}
> body{
> part{ ID: 1, Content-type: multipart/encrypted
> diff --git a/test/thread-naming b/test/thread-naming
> index 41b97d9..b7c96f2 100755
> --- a/test/thread-naming
> +++ b/test/thread-naming
> @@ -71,7 +71,7 @@ Notmuch Test Suite <test_suite at notmuchmail.org> (2001-01-05) (unread)
> Subject: thread-naming: Initial thread subject
> From: Notmuch Test Suite <test_suite at notmuchmail.org>
> To: Notmuch Test Suite <test_suite at notmuchmail.org>
> -Date: Fri, 05 Jan 2001 15:43:56 -0000
> +Date: Fri, 05 Jan 2001 15:43:56 +0000
> header}
> body{
> part{ ID: 1, Content-type: text/plain
> @@ -85,7 +85,7 @@ Notmuch Test Suite <test_suite at notmuchmail.org> (2001-01-06) (inbox unread)
> Subject: thread-naming: Older changed subject
> From: Notmuch Test Suite <test_suite at notmuchmail.org>
> To: Notmuch Test Suite <test_suite at notmuchmail.org>
> -Date: Sat, 06 Jan 2001 15:43:56 -0000
> +Date: Sat, 06 Jan 2001 15:43:56 +0000
> header}
> body{
> part{ ID: 1, Content-type: text/plain
> @@ -99,7 +99,7 @@ Notmuch Test Suite <test_suite at notmuchmail.org> (2001-01-07) (inbox unread)
> Subject: thread-naming: Newer changed subject
> From: Notmuch Test Suite <test_suite at notmuchmail.org>
> To: Notmuch Test Suite <test_suite at notmuchmail.org>
> -Date: Sun, 07 Jan 2001 15:43:56 -0000
> +Date: Sun, 07 Jan 2001 15:43:56 +0000
> header}
> body{
> part{ ID: 1, Content-type: text/plain
> @@ -113,7 +113,7 @@ Notmuch Test Suite <test_suite at notmuchmail.org> (2001-01-08) (unread)
> Subject: thread-naming: Final thread subject
> From: Notmuch Test Suite <test_suite at notmuchmail.org>
> To: Notmuch Test Suite <test_suite at notmuchmail.org>
> -Date: Mon, 08 Jan 2001 15:43:56 -0000
> +Date: Mon, 08 Jan 2001 15:43:56 +0000
> header}
> body{
> part{ ID: 1, Content-type: text/plain
> @@ -127,7 +127,7 @@ Notmuch Test Suite <test_suite at notmuchmail.org> (2001-01-09) (inbox unread)
> Subject: Re: thread-naming: Initial thread subject
> From: Notmuch Test Suite <test_suite at notmuchmail.org>
> To: Notmuch Test Suite <test_suite at notmuchmail.org>
> -Date: Tue, 09 Jan 2001 15:43:45 -0000
> +Date: Tue, 09 Jan 2001 15:43:45 +0000
> header}
> body{
> part{ ID: 1, Content-type: text/plain
> @@ -141,7 +141,7 @@ Notmuch Test Suite <test_suite at notmuchmail.org> (2001-01-10) (inbox unread)
> Subject: Aw: thread-naming: Initial thread subject
> From: Notmuch Test Suite <test_suite at notmuchmail.org>
> To: Notmuch Test Suite <test_suite at notmuchmail.org>
> -Date: Wed, 10 Jan 2001 15:43:45 -0000
> +Date: Wed, 10 Jan 2001 15:43:45 +0000
> header}
> body{
> part{ ID: 1, Content-type: text/plain
> @@ -155,7 +155,7 @@ Notmuch Test Suite <test_suite at notmuchmail.org> (2001-01-11) (inbox unread)
> Subject: Vs: thread-naming: Initial thread subject
> From: Notmuch Test Suite <test_suite at notmuchmail.org>
> To: Notmuch Test Suite <test_suite at notmuchmail.org>
> -Date: Thu, 11 Jan 2001 15:43:45 -0000
> +Date: Thu, 11 Jan 2001 15:43:45 +0000
> header}
> body{
> part{ ID: 1, Content-type: text/plain
> @@ -169,7 +169,7 @@ Notmuch Test Suite <test_suite at notmuchmail.org> (2001-01-12) (inbox unread)
> Subject: Sv: thread-naming: Initial thread subject
> From: Notmuch Test Suite <test_suite at notmuchmail.org>
> To: Notmuch Test Suite <test_suite at notmuchmail.org>
> -Date: Fri, 12 Jan 2001 15:43:45 -0000
> +Date: Fri, 12 Jan 2001 15:43:45 +0000
> header}
> body{
> part{ ID: 1, Content-type: text/plain
> --
> 1.7.7.3
>
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