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lib: Add an API to find a message by filename.

Browse source 
notmuch_database_find_message_by_filename is mostly stolen from
notmuch_database_remove_message, so this patch also vastly simplfies
the latter using the former.

This API is also useful in its own right and will be used in a later
patch for eager maildir flag synchronization.
This commit is contained in:
Austin Clements 2011-06-11 00:19:31 -04:00 committed by David Bremner
parent 59d2457bcc
commit 7a8046ced8
2 changed files with 56 additions and 37 deletions
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77
lib/database.cc
View file

@ -1747,57 +1747,60 @@ notmuch_status_t
notmuch_database_remove_message (notmuch_database_t *notmuch,
const char *filename)
{
void *local;
const char *prefix = _find_prefix ("file-direntry");
char *direntry, *term;
Xapian::PostingIterator i, end;
Xapian::Document document;
notmuch_status_t status;
status = _notmuch_database_ensure_writable (notmuch);
if (status)
return status;
local = talloc_new (notmuch);
try {
status = _notmuch_database_filename_to_direntry (local, notmuch,
filename, &direntry);
if (status)
return status;
term = talloc_asprintf (local, "%s%s", prefix, direntry);
find_doc_ids_for_term (notmuch, term, &i, &end);
for ( ; i != end; i++) {
Xapian::TermIterator j;
notmuch_message_t *message;
notmuch_private_status_t private_status;
message = _notmuch_message_create (local, notmuch,
*i, &private_status);
if (message == NULL)
return COERCE_STATUS (private_status,
"Inconsistent document ID in datbase.");
notmuch_message_t *message =
notmuch_database_find_message_by_filename (notmuch, filename);
notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
if (message) {
status = _notmuch_message_remove_filename (message, filename);
if (status == NOTMUCH_STATUS_SUCCESS)
_notmuch_message_delete (message);
else if (status == NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID)
_notmuch_message_sync (message);
}
return status;
}
notmuch_message_t *
notmuch_database_find_message_by_filename (notmuch_database_t *notmuch,
const char *filename)
{
void *local;
const char *prefix = _find_prefix ("file-direntry");
char *direntry, *term;
Xapian::PostingIterator i, end;
notmuch_message_t *message = NULL;
notmuch_status_t status;
local = talloc_new (notmuch);
try {
status = _notmuch_database_filename_to_direntry (local, notmuch,
filename, &direntry);
if (status)
return NULL;
term = talloc_asprintf (local, "%s%s", prefix, direntry);
find_doc_ids_for_term (notmuch, term, &i, &end);
if (i != end) {
notmuch_private_status_t private_status;
message = _notmuch_message_create (notmuch, notmuch,
*i, &private_status);
}
} catch (const Xapian::Error &error) {
fprintf (stderr, "Error: A Xapian exception occurred removing message: %s\n",
fprintf (stderr, "Error: A Xapian exception occurred finding message by filename: %s\n",
error.get_msg().c_str());
notmuch->exception_reported = TRUE;
status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
message = NULL;
}
talloc_free (local);
return status;
return message;
}
notmuch_string_list_t *

16
lib/notmuch.h
View file

@ -356,6 +356,22 @@ notmuch_message_t *
notmuch_database_find_message (notmuch_database_t *database,
const char *message_id);
/* Find a message with the given filename.
*
* If the database contains a message with the given filename, then a
* new notmuch_message_t object is returned. The caller should call
* notmuch_message_destroy when done with the message.
*
* This function returns NULL in the following situations:
*
* * No message is found with the given filename
* * An out-of-memory situation occurs
* * A Xapian exception occurs
*/
notmuch_message_t *
notmuch_database_find_message_by_filename (notmuch_database_t *notmuch,
const char *filename);
/* Return a list of all tags found in the database.
*
* This function creates a list of all tags found in the database. The