notmuch: Add a 'part' subcommand

A new 'part' subcommand allows the user to extract a single part from
a MIME message. Usage:
  notmuch part --part=<n> <search terms>
The search terms must match only a single message
(e.g. id:foo@bar.com). The part number specified refers to the part
identifiers output by `notmuch show'. The content of the part is
written the stdout with no formatting or identification marks. It is
not JSON formatted.

1 files changed, 6 insertions, 0 deletions

diff --git a/notmuch-client.h b/notmuch-client.h
index c80b39cb..0fa8fa5d 100644
--- a/notmuch-client.h
+++ b/notmuch-client.h
@@ -107,6 +107,9 @@ notmuch_tag_command (void *ctx, int argc, char *argv[]);
 int
 notmuch_search_tags_command (void *ctx, int argc, char *argv[]);
 
+int
+notmuch_part_command (void *ctx, int argc, char *argv[]);
+
 const char *
 notmuch_time_relative_date (const void *ctx, time_t then);
 
@@ -123,6 +126,9 @@ notmuch_status_t
 show_message_body (const char *filename,
 		   void (*show_part) (GMimeObject *part, int *part_count));
 
+notmuch_status_t
+show_one_part (const char *filename, int part);
+
 char *
 json_quote_str (const void *ctx, const char *str);