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lib: refactor folder term update after filename removal

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Abstract some blocks of code for reuse. No functional changes.
This commit is contained in:
Jani Nikula 2014-02-08 19:48:16 +02:00 committed by David Bremner
parent ded713c39d
commit 4d150eba67
1 changed files with 66 additions and 69 deletions
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135
lib/message.cc
View file

@ -481,6 +481,68 @@ notmuch_message_get_replies (notmuch_message_t *message)
return _notmuch_messages_create (message->replies);
}
static void
_notmuch_message_remove_terms (notmuch_message_t *message, const char *prefix)
{
Xapian::TermIterator i;
size_t prefix_len = strlen (prefix);
while (1) {
i = message->doc.termlist_begin ();
i.skip_to (prefix);
/* Terminate loop when no terms remain with desired prefix. */
if (i == message->doc.termlist_end () ||
strncmp ((*i).c_str (), prefix, prefix_len))
break;
try {
message->doc.remove_term ((*i));
} catch (const Xapian::InvalidArgumentError) {
/* Ignore failure to remove non-existent term. */
}
}
}
/* Add directory based terms for all filenames of the message. */
static notmuch_status_t
_notmuch_message_add_directory_terms (void *ctx, notmuch_message_t *message)
{
const char *direntry_prefix = _find_prefix ("file-direntry");
int direntry_prefix_len = strlen (direntry_prefix);
Xapian::TermIterator i = message->doc.termlist_begin ();
notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
for (i.skip_to (direntry_prefix); i != message->doc.termlist_end (); i++) {
unsigned int directory_id;
const char *direntry, *directory;
char *colon;
/* Terminate loop at first term without desired prefix. */
if (strncmp ((*i).c_str (), direntry_prefix, direntry_prefix_len))
break;
/* Indicate that there are filenames remaining. */
status = NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID;
direntry = (*i).c_str ();
direntry += direntry_prefix_len;
directory_id = strtol (direntry, &colon, 10);
if (colon == NULL || *colon != ':')
INTERNAL_ERROR ("malformed direntry");
directory = _notmuch_database_get_directory_path (ctx,
message->notmuch,
directory_id);
if (strlen (directory))
_notmuch_message_gen_terms (message, "folder", directory);
}
return status;
}
/* Add an additional 'filename' for 'message'.
*
* This change will not be reflected in the database until the next
@ -536,17 +598,12 @@ notmuch_status_t
_notmuch_message_remove_filename (notmuch_message_t *message,
const char *filename)
{
const char *direntry_prefix = _find_prefix ("file-direntry");
int direntry_prefix_len = strlen (direntry_prefix);
const char *folder_prefix = _find_prefix ("folder");
int folder_prefix_len = strlen (folder_prefix);
void *local = talloc_new (message);
const char *folder_prefix = _find_prefix ("folder");
char *zfolder_prefix = talloc_asprintf(local, "Z%s", folder_prefix);
int zfolder_prefix_len = strlen (zfolder_prefix);
char *direntry;
notmuch_private_status_t private_status;
notmuch_status_t status;
Xapian::TermIterator i, last;
status = _notmuch_database_filename_to_direntry (
local, message->notmuch, filename, NOTMUCH_FIND_LOOKUP, &direntry);
@ -567,73 +624,13 @@ _notmuch_message_remove_filename (notmuch_message_t *message,
* 3. adding back terms for all remaining filenames of the message. */
/* 1. removing all "folder:" terms */
while (1) {
i = message->doc.termlist_begin ();
i.skip_to (folder_prefix);
/* Terminate loop when no terms remain with desired prefix. */
if (i == message->doc.termlist_end () ||
strncmp ((*i).c_str (), folder_prefix, folder_prefix_len))
{
break;
}
try {
message->doc.remove_term ((*i));
} catch (const Xapian::InvalidArgumentError) {
/* Ignore failure to remove non-existent term. */
}
}
_notmuch_message_remove_terms (message, folder_prefix);
/* 2. removing all "folder:" stemmed terms */
while (1) {
i = message->doc.termlist_begin ();
i.skip_to (zfolder_prefix);
/* Terminate loop when no terms remain with desired prefix. */
if (i == message->doc.termlist_end () ||
strncmp ((*i).c_str (), zfolder_prefix, zfolder_prefix_len))
{
break;
}
try {
message->doc.remove_term ((*i));
} catch (const Xapian::InvalidArgumentError) {
/* Ignore failure to remove non-existent term. */
}
}
_notmuch_message_remove_terms (message, zfolder_prefix);
/* 3. adding back terms for all remaining filenames of the message. */
i = message->doc.termlist_begin ();
i.skip_to (direntry_prefix);
for (; i != message->doc.termlist_end (); i++) {
unsigned int directory_id;
const char *direntry, *directory;
char *colon;
/* Terminate loop at first term without desired prefix. */
if (strncmp ((*i).c_str (), direntry_prefix, direntry_prefix_len))
break;
/* Indicate that there are filenames remaining. */
status = NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID;
direntry = (*i).c_str ();
direntry += direntry_prefix_len;
directory_id = strtol (direntry, &colon, 10);
if (colon == NULL || *colon != ':')
INTERNAL_ERROR ("malformed direntry");
directory = _notmuch_database_get_directory_path (local,
message->notmuch,
directory_id);
if (strlen (directory))
_notmuch_message_gen_terms (message, "folder", directory);
}
status = _notmuch_message_add_directory_terms (local, message);
talloc_free (local);