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mu: add '--lazy-check' option for indexing

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Add an option --lazy-check to ignore any directories that don't have
their ctime changed since the last indexing operation.

There are a few corner-cases (such as editing a message outside mu's
control) where this might miss a change, but apart from that, makes
indexing in for a maildir (and its sub-maildirs) almost a no-op if there
were no changes.
This commit is contained in:
djcb
2016-07-23 19:18:09 +03:00
parent 2a83b02ce2
commit 9477071e63
7 changed files with 115 additions and 72 deletions
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51
lib/mu-maildir.c
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@ -248,21 +248,20 @@ process_file (const char* fullpath, const gchar* mdir,
* determine if path is a maildir leaf-dir; ie. if it's 'cur' or 'new'
* (we're skipping 'tmp' for obvious reasons)
*/
G_GNUC_CONST static gboolean
is_maildir_new_or_cur (const char *path)
gboolean
mu_maildir_is_leaf_dir (const char *path)
{
size_t len;
g_return_val_if_fail (path, FALSE);
/* path is the full path; it cannot possibly be shorter
* than 4 for a maildir (/cur or /new) */
len = strlen (path);
len = path ? strlen (path) : 0;
if (G_UNLIKELY(len < 4))
return FALSE;
/* optimization; one further idea would be cast the 4 bytes to an integer
* and compare that -- need to think about alignment, endianness */
/* optimization; one further idea would be cast the 4 bytes to an
* integer and compare that -- need to think about alignment,
* endianness */
if (path[len - 4] == G_DIR_SEPARATOR &&
path[len - 3] == 'c' &&
@ -415,7 +414,7 @@ process_dir_entry (const char* path, const char* mdir, struct dirent *entry,
switch (d_type) {
case DT_REG: /* we only want files in cur/ and new/ */
if (!is_maildir_new_or_cur (path))
if (!mu_maildir_is_leaf_dir (path))
return MU_OK;
return process_file (fullpath, mdir, cb_msg, data);
@ -522,7 +521,7 @@ process_dir (const char* path, const char* mdir,
gboolean full, void *data)
{
MuError result;
DIR* dir;
DIR* dir;
/* if it has a noindex file, we ignore this dir */
if (dir_contains_file (path, MU_MAILDIR_NOINDEX_FILE) ||
@ -531,27 +530,30 @@ process_dir (const char* path, const char* mdir,
return MU_OK;
}
if (dir_cb) {
MuError rv;
rv = dir_cb (path, TRUE/*enter*/, data);
/* ignore this dir; not necessarily an _error_, dir might
* be up-to-date and return MU_IGNORE */
if (rv == MU_IGNORE)
return MU_OK;
else if (rv != MU_OK)
return rv;
}
dir = opendir (path);
if (!dir) {
g_warning ("cannot access %s: %s", path, strerror(errno));
return MU_OK;
}
if (dir_cb) {
MuError rv;
rv = dir_cb (path, TRUE, data);
if (rv != MU_OK) {
closedir (dir);
return rv;
}
}
result = process_dir_entries (dir, path, mdir, msg_cb, dir_cb, full, data);
result = process_dir_entries (dir, path, mdir, msg_cb, dir_cb,
full, data);
closedir (dir);
/* only run dir_cb if it exists and so far, things went ok */
if (dir_cb && result == MU_OK)
return dir_cb (path, FALSE, data);
return dir_cb (path, FALSE/*leave*/, data);
return result;
}
@ -798,15 +800,16 @@ mu_maildir_get_new_path (const char *oldpath, const char *new_mdir,
if (new_name)
mfile = get_new_basename ();
else {
/* determine the name of the mailfile, stripped of its flags, as well
* as any custom (non-standard) flags */
/* determine the name of the mailfile, stripped of its flags, as
* well as any custom (non-standard) flags */
char *cur;
mfile = g_path_get_basename (oldpath);
for (cur = &mfile[strlen(mfile)-1]; cur > mfile; --cur) {
if ((*cur == ':' || *cur == '!') &&
(cur[1] == '2' && cur[2] == ',')) {
/* get the custom flags (if any) */
custom_flags = mu_flags_custom_from_str (cur + 3);
custom_flags =
mu_flags_custom_from_str (cur + 3);
cur[0] = '\0'; /* strip the flags */
break;
}
@ -839,8 +842,6 @@ get_file_size (const char* path)
}
static gboolean
msg_move_check_pre (const gchar *src, const gchar *dst, GError **err)
{