If a leaf part's body content is omitted, return the encoded length and
transfer encoding in --format=json output. This information may be used
by the consumer, e.g. to decide whether to download a large attachment
over a slow link.
Returning the _encoded_ content length is more efficient than returning
the _decoded_ content length. Returning the transfer encoding allows
the consumer to estimate the decoded content length.
---
devel/schemata | 9 ++++++++-
notmuch-show.c | 16 ++++++++++++++--
2 files changed, 22 insertions(+), 3 deletions(-)
diff --git a/devel/schemata b/devel/schemata
index d1ab983..7d167be 100644
--- a/devel/schemata
+++ b/devel/schemata
@@ -75,7 +75,14 @@ part = {
# A leaf part's body content is optional, but may be included if
# it can be correctly encoded as a string. Consumers should use
# this in preference to fetching the part content separately.
- content?: string
+ content?: string,
+ # If a leaf part's body content is not included, the length of
+ # the encoded content (in bytes) may be given instead.
+ content-length?: int,
+ # If a leaf part's body content is not included, its transfer encoding
+ # may be given. Using this and the encoded content length, it is
+ # possible for the consumer to estimate the decoded content length.
+ content-transfer-encoding?: string
}
# The headers of a message or part (format_headers_sprinter with reply = FALSE)
diff --git a/notmuch-show.c b/notmuch-show.c
index 6a9278c..2d59865 100644
--- a/notmuch-show.c
+++ b/notmuch-show.c
@@ -600,14 +600,26 @@ format_part_text (const void *ctx, sprinter_t *sp,
mime_node_t *node,
}
static void
-format_omitted_part_meta_sprinter (sprinter_t *sp, GMimeObject *meta)
+format_omitted_part_meta_sprinter (sprinter_t *sp, GMimeObject *meta,
GMimePart *part)
{
const char *content_charset = g_mime_object_get_content_type_parameter
(meta, "charset");
+ const char *cte = g_mime_object_get_header (meta,
"content-transfer-encoding");
+ GMimeDataWrapper *wrapper = g_mime_part_get_content_object (part);
+ GMimeStream *stream = g_mime_data_wrapper_get_stream (wrapper);
+ ssize_t content_length = g_mime_stream_length (stream);
if (content_charset != NULL) {
sp->map_key (sp, "content-charset");
sp->string (sp, content_charset);
}
+ if (cte != NULL) {
+ sp->map_key (sp, "content-transfer-encoding");
+ sp->string (sp, cte);
+ }
+ if (content_length >= 0) {
+ sp->map_key (sp, "content-length");
+ sp->integer (sp, content_length);
+ }
}
void
@@ -699,7 +711,7 @@ format_part_sprinter (const void *ctx, sprinter_t *sp,
mime_node_t *node,
sp->string_len (sp, (char *) part_content->data, part_content->len);
g_object_unref (stream_memory);
} else {
- format_omitted_part_meta_sprinter (sp, meta);
+ format_omitted_part_meta_sprinter (sp, meta, GMIME_PART
(node->part));
}
} else if (GMIME_IS_MULTIPART (node->part)) {
sp->map_key (sp, "content");
--
1.7.12.1
