Re: [PATCH 2/2] added support for user-specified directories to exclude

[Jani Nikula <jani@nikula.org>]

On Thu, 26 Jan 2012 12:11:58 +0200, Tomi Ollila <tomi.ollila@iki.fi> wrote:
> A new configuration key 'database.exclude' is used to determine
> which directories user wants not to be scanned for new mails.
> 
> ---
> 
> Notes (from 2011-09-13):
> 
> 1) Currently the comments for newly created configuration file are not
> updated, so for not this is 'undocumented feature'. Should there be an
> empty configuration line as a placeholder ... ?
> 
> 2) Whenever some already existing directory is added to the exclude list
> and the parent directory timestamp has not changed, notmuch new will not
> notice the directory has gone (as it still is there), user needs to 'touch'
> the parent directory before next 'notmuch new' no make notmuch notice.
> 
> 2012-01-26: could notmuch track mtime of the configuration file and if
> that changes, ignore mail directory timestamps ?
> 
> 3) count_files() function is not touched. The functionality there has fallen
> behind of add_files_recursive (maildir+tmp check and following symlinks).
> The question there should it be updated, or attempted to merge with
> add_files (as the comment says). count_files() is only called at the beginning
> when database is not yet initialised.
> ---
>  notmuch-client.h |    3 +++
>  notmuch-config.c |   13 +++++++++++++
>  notmuch-new.c    |   22 ++++++++++++++++++++--
>  3 files changed, 36 insertions(+), 2 deletions(-)
> 
> diff --git a/notmuch-client.h b/notmuch-client.h
> index e0eb594..78460fc 100644
> --- a/notmuch-client.h
> +++ b/notmuch-client.h
> @@ -219,6 +219,9 @@ void
>  notmuch_config_set_database_path (notmuch_config_t *config,
>  				  const char *database_path);
>  
> +const char **
> +notmuch_config_get_database_exclude (notmuch_config_t *config,
> +				     size_t *length);
>  const char *
>  notmuch_config_get_user_name (notmuch_config_t *config);
>  
> diff --git a/notmuch-config.c b/notmuch-config.c
> index a124e34..e236114 100644
> --- a/notmuch-config.c
> +++ b/notmuch-config.c
> @@ -99,6 +99,8 @@ struct _notmuch_config {
>      GKeyFile *key_file;
>  
>      char *database_path;
> +    const char **database_exclude;
> +    size_t database_exclude_length;
>      char *user_name;
>      char *user_primary_email;
>      const char **user_other_email;
> @@ -258,6 +260,8 @@ notmuch_config_open (void *ctx,
>      config->key_file = g_key_file_new ();
>  
>      config->database_path = NULL;
> +    config->database_exclude = NULL;
> +    config->database_exclude_length = 0;
>      config->user_name = NULL;
>      config->user_primary_email = NULL;
>      config->user_other_email = NULL;
> @@ -537,6 +541,15 @@ notmuch_config_set_database_path (notmuch_config_t *config,
>      config->database_path = NULL;
>  }
>  
> +const char **
> +notmuch_config_get_database_exclude (notmuch_config_t *config,
> +				     size_t *length)
> +{
> +    return _config_get_list (config, "database", "exclude",
> +			     &(config->database_exclude),
> +			     &(config->database_exclude_length), length);
> +}
> +
>  const char *
>  notmuch_config_get_user_name (notmuch_config_t *config)
>  {
> diff --git a/notmuch-new.c b/notmuch-new.c
> index a569a54..d607f5b 100644
> --- a/notmuch-new.c
> +++ b/notmuch-new.c
> @@ -39,6 +39,8 @@ typedef struct {
>      int verbose;
>      const char **new_tags;
>      size_t new_tags_length;
> +    const char **database_exclude;
> +    size_t database_exclude_length;
>  
>      int total_files;
>      int processed_files;
> @@ -300,6 +302,8 @@ add_files_recursive (notmuch_database_t *notmuch,
>      is_maildir = _entries_resemble_maildir (fs_entries, num_fs_entries);
>  
>      for (i = 0; i < num_fs_entries; i++) {
> +	size_t j;
> +
>  	if (interrupted)
>  	    break;
>  
> @@ -323,8 +327,6 @@ add_files_recursive (notmuch_database_t *notmuch,
>  	 * Also ignore the .notmuch directory and any "tmp" directory
>  	 * that appears within a maildir.
>  	 */
> -	/* XXX: Eventually we'll want more sophistication to let the
> -	 * user specify files to be ignored. */
>  	if (strcmp (entry->d_name, ".") == 0 ||
>  	    strcmp (entry->d_name, "..") == 0 ||
>  	    (is_maildir && strcmp (entry->d_name, "tmp") == 0) ||
> @@ -332,6 +334,12 @@ add_files_recursive (notmuch_database_t *notmuch,
>  	{
>  	    continue;
>  	}
> +	/* Ignore user-specified directories */
> +	for (j = 0; j < state->database_exclude_length; j++)
> +	    if (strcmp(entry->d_name, state->database_exclude[j]) == 0)
> +		break;
> +	if (j < state->database_exclude_length)
> +	    continue;

How about wrapping that in a function you can use here and below?

	if (user_wants_this_excluded (...))
		continue;

Please also have a look at id:"87pqecylon.fsf@nikula.org" and the
patches Austin posted. "Auto ignore"?

BR,
Jani.

>  
>  	next = talloc_asprintf (notmuch, "%s/%s", path, entry->d_name);
>  	status = add_files_recursive (notmuch, next, state);
> @@ -364,11 +372,20 @@ add_files_recursive (notmuch_database_t *notmuch,
>      /* Pass 2: Scan for new files, removed files, and removed directories. */
>      for (i = 0; i < num_fs_entries; i++)
>      {
> +	size_t j;
> +
>  	if (interrupted)
>  	    break;
>  
>          entry = fs_entries[i];
>  
> +	/* Ignore user-specified files & directories */
> +	for (j = 0; j < state->database_exclude_length; j++)
> +	    if (strcmp(entry->d_name, state->database_exclude[j]) == 0)
> +		break;
> +	if (j < state->database_exclude_length)
> +	    continue;
> +
>  	/* Check if we've walked past any names in db_files or
>  	 * db_subdirs. If so, these have been deleted. */
>  	while (notmuch_filenames_valid (db_files) &&
> @@ -837,6 +854,7 @@ notmuch_new_command (void *ctx, int argc, char *argv[])
>  	return 1;
>  
>      add_files_state.new_tags = notmuch_config_get_new_tags (config, &add_files_state.new_tags_length);
> +    add_files_state.database_exclude = notmuch_config_get_database_exclude (config, &add_files_state.database_exclude_length);
>      add_files_state.synchronize_flags = notmuch_config_get_maildir_synchronize_flags (config);
>      db_path = notmuch_config_get_database_path (config);
>  
> -- 
> 1.7.6.4
> 
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