[Patch v2 2/9] notmuch-tag.c: convert to use tag-utils
david at tethera.net
david at tethera.net
Sun Jan 6 19:16:47 PST 2013
From: David Bremner <bremner at debian.org>
Command line parsing is factored out into a function
parse_tag_command_line in tag-utils.c.
There is some duplicated code eliminated in tag_query, and a bunch of
translation from using the bare tag_op structs to using that tag-utils
API.
---
notmuch-tag.c | 99 ++++++++++++---------------------------------------------
tag-util.c | 51 +++++++++++++++++++++++++++--
tag-util.h | 15 +++++++++
3 files changed, 84 insertions(+), 81 deletions(-)
diff --git a/notmuch-tag.c b/notmuch-tag.c
index fc9d43a..8129912 100644
--- a/notmuch-tag.c
+++ b/notmuch-tag.c
@@ -19,6 +19,7 @@
*/
#include "notmuch-client.h"
+#include "tag-util.h"
#include "string-util.h"
static volatile sig_atomic_t interrupted;
@@ -36,14 +37,10 @@ handle_sigint (unused (int sig))
interrupted = 1;
}
-typedef struct {
- const char *tag;
- notmuch_bool_t remove;
-} tag_operation_t;
static char *
_optimize_tag_query (void *ctx, const char *orig_query_string,
- const tag_operation_t *tag_ops)
+ const tag_op_list_t *list)
{
/* This is subtler than it looks. Xapian ignores the '-' operator
* at the beginning both queries and parenthesized groups and,
@@ -60,7 +57,7 @@ _optimize_tag_query (void *ctx, const char *orig_query_string,
size_t i;
/* Don't optimize if there are no tag changes. */
- if (tag_ops[0].tag == NULL)
+ if (tag_op_list_size (list) == 0)
return talloc_strdup (ctx, orig_query_string);
/* Build the new query string */
@@ -69,17 +66,17 @@ _optimize_tag_query (void *ctx, const char *orig_query_string,
else
query_string = talloc_asprintf (ctx, "( %s ) and (", orig_query_string);
- for (i = 0; tag_ops[i].tag && query_string; i++) {
+ for (i = 0; i < tag_op_list_size (list) && query_string; i++) {
/* XXX in case of OOM, query_string will be deallocated when
* ctx is, which might be at shutdown */
if (make_boolean_term (ctx,
- "tag", tag_ops[i].tag,
+ "tag", tag_op_list_tag (list, i),
&escaped, &escaped_len))
return NULL;
query_string = talloc_asprintf_append_buffer (
query_string, "%s%s%s", join,
- tag_ops[i].remove ? "" : "not ",
+ tag_op_list_isremove (list, i) ? "" : "not ",
escaped);
join = " or ";
}
@@ -91,17 +88,15 @@ _optimize_tag_query (void *ctx, const char *orig_query_string,
return query_string;
}
-/* Tag messages matching 'query_string' according to 'tag_ops', which
- * must be an array of tagging operations terminated with an empty
- * element. */
+/* Tag messages matching 'query_string' according to 'tag_ops'
+ */
static int
tag_query (void *ctx, notmuch_database_t *notmuch, const char *query_string,
- tag_operation_t *tag_ops, notmuch_bool_t synchronize_flags)
+ tag_op_list_t *tag_ops, tag_op_flag_t flags)
{
notmuch_query_t *query;
notmuch_messages_t *messages;
notmuch_message_t *message;
- int i;
/* Optimize the query so it excludes messages that already have
* the specified set of tags. */
@@ -124,21 +119,7 @@ tag_query (void *ctx, notmuch_database_t *notmuch, const char *query_string,
notmuch_messages_valid (messages) && ! interrupted;
notmuch_messages_move_to_next (messages)) {
message = notmuch_messages_get (messages);
-
- notmuch_message_freeze (message);
-
- for (i = 0; tag_ops[i].tag; i++) {
- if (tag_ops[i].remove)
- notmuch_message_remove_tag (message, tag_ops[i].tag);
- else
- notmuch_message_add_tag (message, tag_ops[i].tag);
- }
-
- notmuch_message_thaw (message);
-
- if (synchronize_flags)
- notmuch_message_tags_to_maildir_flags (message);
-
+ tag_op_list_apply (message, tag_ops, flags | TAG_FLAG_PRE_OPTIMIZED);
notmuch_message_destroy (message);
}
@@ -150,15 +131,13 @@ tag_query (void *ctx, notmuch_database_t *notmuch, const char *query_string,
int
notmuch_tag_command (void *ctx, int argc, char *argv[])
{
- tag_operation_t *tag_ops;
- int tag_ops_count = 0;
- char *query_string;
+ tag_op_list_t *tag_ops = NULL;
+ char *query_string = NULL;
notmuch_config_t *config;
notmuch_database_t *notmuch;
struct sigaction action;
- notmuch_bool_t synchronize_flags;
- int i;
- int ret;
+ tag_op_flag_t tag_flags = TAG_FLAG_NONE;
+ int ret = 0;
/* Setup our handler for SIGINT */
memset (&action, 0, sizeof (struct sigaction));
@@ -167,54 +146,15 @@ notmuch_tag_command (void *ctx, int argc, char *argv[])
action.sa_flags = SA_RESTART;
sigaction (SIGINT, &action, NULL);
- argc--; argv++; /* skip subcommand argument */
-
- /* Array of tagging operations (add or remove), terminated with an
- * empty element. */
- tag_ops = talloc_array (ctx, tag_operation_t, argc + 1);
+ tag_ops = tag_op_list_create (ctx);
if (tag_ops == NULL) {
fprintf (stderr, "Out of memory.\n");
return 1;
}
- for (i = 0; i < argc; i++) {
- if (strcmp (argv[i], "--") == 0) {
- i++;
- break;
- }
- if (argv[i][0] == '+' || argv[i][0] == '-') {
- if (argv[i][0] == '+' && argv[i][1] == '\0') {
- fprintf (stderr, "Error: tag names cannot be empty.\n");
- return 1;
- }
- if (argv[i][0] == '+' && argv[i][1] == '-') {
- /* This disallows adding the non-removable tag "-" and
- * enables notmuch tag to take long options in the
- * future. */
- fprintf (stderr, "Error: tag names must not start with '-'.\n");
- return 1;
- }
- tag_ops[tag_ops_count].tag = argv[i] + 1;
- tag_ops[tag_ops_count].remove = (argv[i][0] == '-');
- tag_ops_count++;
- } else {
- break;
- }
- }
-
- tag_ops[tag_ops_count].tag = NULL;
-
- if (tag_ops_count == 0) {
- fprintf (stderr, "Error: 'notmuch tag' requires at least one tag to add or remove.\n");
- return 1;
- }
-
- query_string = query_string_from_args (ctx, argc - i, &argv[i]);
-
- if (*query_string == '\0') {
- fprintf (stderr, "Error: notmuch tag requires at least one search term.\n");
+ if (parse_tag_command_line (ctx, argc - 1, argv + 1,
+ &query_string, tag_ops))
return 1;
- }
config = notmuch_config_open (ctx, NULL, NULL);
if (config == NULL)
@@ -224,9 +164,10 @@ notmuch_tag_command (void *ctx, int argc, char *argv[])
NOTMUCH_DATABASE_MODE_READ_WRITE, ¬much))
return 1;
- synchronize_flags = notmuch_config_get_maildir_synchronize_flags (config);
+ if (notmuch_config_get_maildir_synchronize_flags (config))
+ tag_flags |= TAG_FLAG_MAILDIR_SYNC;
- ret = tag_query (ctx, notmuch, query_string, tag_ops, synchronize_flags);
+ ret = tag_query (ctx, notmuch, query_string, tag_ops, tag_flags);
notmuch_database_destroy (notmuch);
diff --git a/tag-util.c b/tag-util.c
index 0a4fe78..701d329 100644
--- a/tag-util.c
+++ b/tag-util.c
@@ -45,8 +45,9 @@ illegal_tag (const char *tag, notmuch_bool_t remove)
if (*tag == '\0' && ! remove)
return "empty tag forbidden";
- /* This disallows adding the non-removable tag "-" and
- * enables notmuch tag to take long options more easily.
+ /* This disallows adding tags starting with "-", in particular the
+ * non-removable tag "-" and enables notmuch tag to take long
+ * options more easily.
*/
if (*tag == '-' && ! remove)
@@ -157,6 +158,52 @@ parse_tag_line (void *ctx, char *line,
return ret;
}
+tag_parse_status_t
+parse_tag_command_line (void *ctx, int argc, char **argv,
+ char **query_str, tag_op_list_t *tag_ops)
+{
+
+ int i;
+
+ tag_op_list_reset (tag_ops);
+
+ for (i = 0; i < argc; i++) {
+ if (strcmp (argv[i], "--") == 0) {
+ i++;
+ break;
+ }
+
+ if (argv[i][0] != '+' && argv[i][0] != '-')
+ break;
+
+ notmuch_bool_t is_remove = argv[i][0] == '-';
+ const char *msg;
+
+ msg = illegal_tag (argv[i] + 1, is_remove);
+ if (msg) {
+ fprintf (stderr, "Error: %s", msg);
+ return TAG_PARSE_INVALID;
+ }
+
+ tag_op_list_append (tag_ops, argv[i] + 1, is_remove);
+ }
+
+ if (tag_op_list_size (tag_ops) == 0) {
+ fprintf (stderr, "Error: 'notmuch tag' requires at least one tag to add or remove.\n");
+ return TAG_PARSE_INVALID;
+ }
+
+ *query_str = query_string_from_args (ctx, argc - i, &argv[i]);
+
+ if (*query_str == NULL || **query_str == '\0') {
+ fprintf (stderr, "Error: notmuch tag requires at least one search term.\n");
+ return TAG_PARSE_INVALID;
+ }
+
+ return TAG_PARSE_SUCCESS;
+}
+
+
static inline void
message_error (notmuch_message_t *message,
notmuch_status_t status,
diff --git a/tag-util.h b/tag-util.h
index c07bfde..246de85 100644
--- a/tag-util.h
+++ b/tag-util.h
@@ -72,6 +72,21 @@ parse_tag_line (void *ctx, char *line,
tag_op_flag_t flags,
char **query_str, tag_op_list_t *ops);
+
+
+/* Parse a command line of the following format:
+ *
+ * +<tag>|-<tag> [...] [--] <search-terms>
+ *
+ * Output Parameters:
+ * ops contains a list of tag operations
+ * query_str the search terms.
+ */
+
+tag_parse_status_t
+parse_tag_command_line (void *ctx, int argc, char **argv,
+ char **query_str, tag_op_list_t *ops);
+
/*
* Create an empty list of tag operations
*
--
1.7.10.4
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