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+From: Jani Nikula <jani@nikula.org>\r
+To: notmuch@notmuchmail.org\r
+Subject: [PATCH v2 1/3] cli: refactor "notmuch tag" data structures for\r
+ tagging operations\r
+Date: Sun, 25 Mar 2012 22:18:43 +0300\r
+Message-Id:\r
+ <0862d8a5424d6d0da188db84340b027fdede4245.1332702915.git.jani@nikula.org>\r
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+\r
+To simplify code, keep all tagging operations in a single array\r
+instead of separate add and remove arrays. Apply tag changes in the\r
+order specified on the command line, instead of first removing and\r
+then adding the tags.\r
+\r
+This results in a minor functional change: If a tag is both added and\r
+removed, the last specified operation is now used. Previously the tag\r
+was always added.\r
+\r
+Signed-off-by: Jani Nikula <jani@nikula.org>\r
+---\r
+ notmuch-tag.c | 79 +++++++++++++++++++++++++-------------------------------\r
+ 1 files changed, 35 insertions(+), 44 deletions(-)\r
+\r
+diff --git a/notmuch-tag.c b/notmuch-tag.c\r
+index 36b9b09..c39b235 100644\r
+--- a/notmuch-tag.c\r
++++ b/notmuch-tag.c\r
+@@ -53,10 +53,14 @@ _escape_tag (char *buf, const char *tag)\r
+ return buf;\r
+ }\r
+ \r
++typedef struct {\r
++ const char *tag;\r
++ notmuch_bool_t remove;\r
++} tag_operation_t;\r
++\r
+ static char *\r
+-_optimize_tag_query (void *ctx, const char *orig_query_string, char *argv[],\r
+- int *add_tags, int add_tags_count,\r
+- int *remove_tags, int remove_tags_count)\r
++_optimize_tag_query (void *ctx, const char *orig_query_string,\r
++ const tag_operation_t *tag_ops)\r
+ {\r
+ /* This is subtler than it looks. Xapian ignores the '-' operator\r
+ * at the beginning both queries and parenthesized groups and,\r
+@@ -74,12 +78,9 @@ _optimize_tag_query (void *ctx, const char *orig_query_string, char *argv[],\r
+ /* Allocate a buffer for escaping tags. This is large enough to\r
+ * hold a fully escaped tag with every character doubled plus\r
+ * enclosing quotes and a NUL. */\r
+- for (i = 0; i < add_tags_count; i++)\r
+- if (strlen (argv[add_tags[i]] + 1) > max_tag_len)\r
+- max_tag_len = strlen (argv[add_tags[i]] + 1);\r
+- for (i = 0; i < remove_tags_count; i++)\r
+- if (strlen (argv[remove_tags[i]] + 1) > max_tag_len)\r
+- max_tag_len = strlen (argv[remove_tags[i]] + 1);\r
++ for (i = 0; tag_ops[i].tag; i++)\r
++ if (strlen (tag_ops[i].tag) > max_tag_len)\r
++ max_tag_len = strlen (tag_ops[i].tag);\r
+ escaped = talloc_array(ctx, char, max_tag_len * 2 + 3);\r
+ if (!escaped)\r
+ return NULL;\r
+@@ -90,16 +91,11 @@ _optimize_tag_query (void *ctx, const char *orig_query_string, char *argv[],\r
+ else\r
+ query_string = talloc_asprintf (ctx, "( %s ) and (", orig_query_string);\r
+ \r
+- for (i = 0; i < add_tags_count && query_string; i++) {\r
+- query_string = talloc_asprintf_append_buffer (\r
+- query_string, "%snot tag:%s", join,\r
+- _escape_tag (escaped, argv[add_tags[i]] + 1));\r
+- join = " or ";\r
+- }\r
+- for (i = 0; i < remove_tags_count && query_string; i++) {\r
++ for (i = 0; tag_ops[i].tag && query_string; i++) {\r
+ query_string = talloc_asprintf_append_buffer (\r
+- query_string, "%stag:%s", join,\r
+- _escape_tag (escaped, argv[remove_tags[i]] + 1));\r
++ query_string, "%s%stag:%s", join,\r
++ tag_ops[i].remove ? "" : "not ",\r
++ _escape_tag (escaped, tag_ops[i].tag));\r
+ join = " or ";\r
+ }\r
+ \r
+@@ -113,9 +109,8 @@ _optimize_tag_query (void *ctx, const char *orig_query_string, char *argv[],\r
+ int\r
+ notmuch_tag_command (void *ctx, int argc, char *argv[])\r
+ {\r
+- int *add_tags, *remove_tags;\r
+- int add_tags_count = 0;\r
+- int remove_tags_count = 0;\r
++ tag_operation_t *tag_ops;\r
++ int tag_ops_count = 0;\r
+ char *query_string;\r
+ notmuch_config_t *config;\r
+ notmuch_database_t *notmuch;\r
+@@ -133,35 +128,33 @@ notmuch_tag_command (void *ctx, int argc, char *argv[])\r
+ action.sa_flags = SA_RESTART;\r
+ sigaction (SIGINT, &action, NULL);\r
+ \r
+- add_tags = talloc_size (ctx, argc * sizeof (int));\r
+- if (add_tags == NULL) {\r
+- fprintf (stderr, "Out of memory.\n");\r
+- return 1;\r
+- }\r
++ argc--; argv++; /* skip subcommand argument */\r
+ \r
+- remove_tags = talloc_size (ctx, argc * sizeof (int));\r
+- if (remove_tags == NULL) {\r
++ /* Array of tagging operations (add or remove), terminated with an\r
++ * empty element. */\r
++ tag_ops = talloc_array (ctx, tag_operation_t, argc + 1);\r
++ if (tag_ops == NULL) {\r
+ fprintf (stderr, "Out of memory.\n");\r
+ return 1;\r
+ }\r
+ \r
+- argc--; argv++; /* skip subcommand argument */\r
+-\r
+ for (i = 0; i < argc; i++) {\r
+ if (strcmp (argv[i], "--") == 0) {\r
+ i++;\r
+ break;\r
+ }\r
+- if (argv[i][0] == '+') {\r
+- add_tags[add_tags_count++] = i;\r
+- } else if (argv[i][0] == '-') {\r
+- remove_tags[remove_tags_count++] = i;\r
++ if (argv[i][0] == '+' || argv[i][0] == '-') {\r
++ tag_ops[tag_ops_count].tag = argv[i] + 1;\r
++ tag_ops[tag_ops_count].remove = argv[i][0] == '-';\r
++ tag_ops_count++;\r
+ } else {\r
+ break;\r
+ }\r
+ }\r
+ \r
+- if (add_tags_count == 0 && remove_tags_count == 0) {\r
++ tag_ops[tag_ops_count].tag = NULL;\r
++\r
++ if (tag_ops_count == 0) {\r
+ fprintf (stderr, "Error: 'notmuch tag' requires at least one tag to add or remove.\n");\r
+ return 1;\r
+ }\r
+@@ -175,9 +168,7 @@ notmuch_tag_command (void *ctx, int argc, char *argv[])\r
+ \r
+ /* Optimize the query so it excludes messages that already have\r
+ * the specified set of tags. */\r
+- query_string = _optimize_tag_query (ctx, query_string, argv,\r
+- add_tags, add_tags_count,\r
+- remove_tags, remove_tags_count);\r
++ query_string = _optimize_tag_query (ctx, query_string, tag_ops);\r
+ if (query_string == NULL) {\r
+ fprintf (stderr, "Out of memory.\n");\r
+ return 1;\r
+@@ -211,12 +202,12 @@ notmuch_tag_command (void *ctx, int argc, char *argv[])\r
+ \r
+ notmuch_message_freeze (message);\r
+ \r
+- for (i = 0; i < remove_tags_count; i++)\r
+- notmuch_message_remove_tag (message,\r
+- argv[remove_tags[i]] + 1);\r
+-\r
+- for (i = 0; i < add_tags_count; i++)\r
+- notmuch_message_add_tag (message, argv[add_tags[i]] + 1);\r
++ for (i = 0; tag_ops[i].tag; i++) {\r
++ if (tag_ops[i].remove)\r
++ notmuch_message_remove_tag (message, tag_ops[i].tag);\r
++ else\r
++ notmuch_message_add_tag (message, tag_ops[i].tag);\r
++ }\r
+ \r
+ notmuch_message_thaw (message);\r
+ \r
+-- \r
+1.7.5.4\r
+\r
projects / notmuch-archives.git / commitdiff