From: Jani Nikula <[email protected]>

Add support for batch tagging operations through stdin to "notmuch
tag". This can be enabled with the new --stdin command line option to
"notmuch new". The input must consist of lines of the format:

+<tag>|-<tag> [...] [--] <search-terms>

Each line is interpreted similarly to "notmuch tag" command line
arguments. The delimiter is one or more spaces ' '. Any characters in
<tag> and <search-terms> MAY be hex encoded with %NN where NN is the
hexadecimal value of the character. Any ' ' and '%' characters in
<tag> and <search-terms> MUST be hex encoded (using %20 and %25,
respectively). Any characters that are not part of <tag> or
<search-terms> MUST NOT be hex encoded.

Leading and trailing space ' ' is ignored. Empty lines and lines
beginning with '#' are ignored.

Signed-off-by: Jani Nikula <jani at nikula.org>

Hacked-like-crazy-by: David Bremner <david at tethera.net>
---
 notmuch-tag.c |  177 +++++++++++++++++++++++++++++++++++----------------------
 1 file changed, 109 insertions(+), 68 deletions(-)

diff --git a/notmuch-tag.c b/notmuch-tag.c
index 88d559b..ca120d5 100644
--- a/notmuch-tag.c
+++ b/notmuch-tag.c
@@ -19,6 +19,7 @@
  */

 #include "notmuch-client.h"
+#include "tag-util.h"

 static volatile sig_atomic_t interrupted;

@@ -54,14 +55,9 @@ _escape_tag (char *buf, const char *tag)
     return buf;
 }

-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,
@@ -75,6 +71,7 @@ _optimize_tag_query (void *ctx, const char *orig_query_string,
     const char *join = "";
     int i;
     unsigned int max_tag_len = 0;
+    const tag_operation_t *tag_ops = list->ops;

     /* Don't optimize if there are no tag changes. */
     if (tag_ops[0].tag == NULL)
@@ -116,12 +113,11 @@ _optimize_tag_query (void *ctx, const char 
*orig_query_string,
  * element. */
 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. */
@@ -144,21 +140,7 @@ 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);
        notmuch_message_destroy (message);
     }

@@ -170,15 +152,17 @@ 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 synchronize_flags = TAG_FLAG_NONE;
+    notmuch_bool_t batch = FALSE;
+    FILE *input = stdin;
+    char *input_file_name = NULL;
+    int i, opt_index;
+    int ret = 0;

     /* Setup our handler for SIGINT */
     memset (&action, 0, sizeof (struct sigaction));
@@ -187,53 +171,76 @@ notmuch_tag_command (void *ctx, int argc, char *argv[])
     action.sa_flags = SA_RESTART;
     sigaction (SIGINT, &action, NULL);

-    argc--; argv++; /* skip subcommand argument */
+    notmuch_opt_desc_t options[] = {
+       { NOTMUCH_OPT_BOOLEAN, &batch, "batch", 0, 0 },
+       { NOTMUCH_OPT_STRING, &input_file_name, "input", 'i', 0 },
+       { 0, 0, 0, 0, 0 }
+    };

-    /* Array of tagging operations (add or remove), terminated with an
-     * empty element. */
-    tag_ops = talloc_array (ctx, tag_operation_t, argc + 1);
-    if (tag_ops == NULL) {
-       fprintf (stderr, "Out of memory.\n");
+    opt_index = parse_arguments (argc, argv, options, 1);
+    if (opt_index < 0)
        return 1;
+
+    if (input_file_name) {
+       batch = TRUE;
+       input = fopen (input_file_name, "r");
+       if (input == NULL) {
+           fprintf (stderr, "Error opening %s for reading: %s\n",
+                    input_file_name, strerror (errno));
+           return 1;
+       }
     }

-    for (i = 0; i < argc; i++) {
-       if (strcmp (argv[i], "--") == 0) {
-           i++;
-           break;
+    if (batch) {
+       if (opt_index != argc) {
+           fprintf (stderr, "Can't specify both cmdline and stdin!\n");
+           return 1;
        }
-       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;
+    } else {
+       /* Array of tagging operations (add or remove), terminated with an
+        * empty element. */
+       tag_ops = tag_op_list_create (ctx);
+       if (tag_ops == NULL) {
+           fprintf (stderr, "Out of memory.\n");
+           return 1;
+       }
+
+       for (i = opt_index; i < argc; i++) {
+           if (strcmp (argv[i], "--") == 0) {
+               i++;
+               break;
            }
-           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;
+           if (argv[i][0] == '+' || argv[i][0] == '-') {
+               /* FIXME: checks should be consistent with those in batch 
tagging */
+               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_op_list_append (ctx, tag_ops,
+                                   argv[i] + 1, (argv[i][0] == '-'));
+           } else {
+               break;
            }
-           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;
-    }
+       if (tag_op_list_empty (tag_ops)) {
+           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]);
+       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");
-       return 1;
+       if (*query_string == '\0') {
+           fprintf (stderr, "Error: notmuch tag requires at least one search 
term.\n");
+           return 1;
+       }
     }

     config = notmuch_config_open (ctx, NULL, NULL);
@@ -244,11 +251,45 @@ notmuch_tag_command (void *ctx, int argc, char *argv[])
                               NOTMUCH_DATABASE_MODE_READ_WRITE, &notmuch))
        return 1;

-    synchronize_flags = notmuch_config_get_maildir_synchronize_flags (config);
+    if (notmuch_config_get_maildir_synchronize_flags (config))
+       synchronize_flags = TAG_FLAG_MAILDIR_SYNC;
+
+    if (batch) {
+
+       char *line = NULL;
+       size_t line_size = 0;
+       ssize_t line_len;
+       int ret = 0;
+       tag_op_list_t *tag_ops;
+
+       tag_ops = tag_op_list_create (ctx);
+       if (tag_ops == NULL) {
+           fprintf (stderr, "Out of memory.\n");
+           return 1;
+       }
+
+       while ((line_len = getline (&line, &line_size, input)) != -1 &&
+              ! interrupted) {
+
+           char *query_string;
+
+           ret =  parse_tag_line (ctx, line, &query_string, tag_ops);

-    ret = tag_query (ctx, notmuch, query_string, tag_ops, synchronize_flags);
+           if (ret > 0)
+               continue;
+
+           if (ret < 0 || tag_query (ctx, notmuch, query_string,
+                                     tag_ops, synchronize_flags))
+               break;
+       }
+
+       if (line)
+           free (line);
+    } else
+       ret = tag_query (ctx, notmuch, query_string, tag_ops, 
synchronize_flags);

     notmuch_database_destroy (notmuch);

-    return ret;
+    return ret || interrupted;
+
 }
-- 
1.7.10.4

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