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+From: Jani Nikula <jani@nikula.org>\r
+To: Austin Clements <amdragon@MIT.EDU>, notmuch@notmuchmail.org\r
+Subject: Re: [PATCH 1/3] count: Convert to new-style argument parsing\r
+In-Reply-To: <1326258173-21163-2-git-send-email-amdragon@mit.edu>\r
+References: <20120109043101.GH20796@mit.edu>\r
+ <1326258173-21163-1-git-send-email-amdragon@mit.edu>\r
+ <1326258173-21163-2-git-send-email-amdragon@mit.edu>\r
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+ (i686-pc-linux-gnu)\r
+Date: Wed, 11 Jan 2012 08:17:05 +0000\r
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+\r
+On Wed, 11 Jan 2012 00:02:51 -0500, Austin Clements <amdragon@MIT.EDU> wrote:\r
+> ---\r
+> notmuch-count.c | 53 +++++++++++++++++++++++++----------------------------\r
+> 1 files changed, 25 insertions(+), 28 deletions(-)\r
+> \r
+> diff --git a/notmuch-count.c b/notmuch-count.c\r
+> index 20ce334..fb7401b 100644\r
+> --- a/notmuch-count.c\r
+> +++ b/notmuch-count.c\r
+> @@ -21,6 +21,11 @@\r
+> \r
+> #include "notmuch-client.h"\r
+> \r
+> +typedef enum {\r
+> + OUTPUT_THREADS,\r
+> + OUTPUT_MESSAGES,\r
+> +} output_t;\r
+> +\r
+> int\r
+> notmuch_count_command (void *ctx, int argc, char *argv[])\r
+> {\r
+> @@ -28,35 +33,23 @@ notmuch_count_command (void *ctx, int argc, char *argv[])\r
+> notmuch_database_t *notmuch;\r
+> notmuch_query_t *query;\r
+> char *query_str;\r
+> - int i;\r
+> - notmuch_bool_t output_messages = TRUE;\r
+> + int opt_index;\r
+> + output_t output = OUTPUT_MESSAGES;\r
+> \r
+> - argc--; argv++; /* skip subcommand argument */\r
+> + notmuch_opt_desc_t options[] = {\r
+> + { NOTMUCH_OPT_KEYWORD, &output, "output", 'o',\r
+> + (notmuch_keyword_t []){ { "threads", OUTPUT_THREADS },\r
+> + { "messages", OUTPUT_MESSAGES },\r
+> + { 0, 0 } } },\r
+\r
+To be pedantic, parse_arguments() expects 'output_var' to be a pointer\r
+to int for NOTMUCH_OPT_KEYWORD. sizeof(enum) is implementation\r
+dependent. I would forget about output_t typedef, use plain enum, and\r
+int type for 'output'.\r
+\r
+In fact, this is exactly what I did in commits\r
+e6d89ad723f775952d89d4f81b6072617c5caf18 and\r
+be5619cca32452f1a398add85908d78d6e72f469. In the latter I could have\r
+used notmuch_bool_t because it's a typedeffed int, but then I would've\r
+depended on some external typedef not changing (it probably won't, but\r
+this is defensive programming).\r
+\r
+Otherwise, looks good.\r
+\r
+BR,\r
+Jani.\r
+\r
+\r
+> + { 0, 0, 0, 0, 0 }\r
+> + };\r
+> \r
+> - for (i = 0; i < argc && argv[i][0] == '-'; i++) {\r
+> - if (strcmp (argv[i], "--") == 0) {\r
+> - i++;\r
+> - break;\r
+> - }\r
+> - if (STRNCMP_LITERAL (argv[i], "--output=") == 0) {\r
+> - const char *opt = argv[i] + sizeof ("--output=") - 1;\r
+> - if (strcmp (opt, "threads") == 0) {\r
+> - output_messages = FALSE;\r
+> - } else if (strcmp (opt, "messages") == 0) {\r
+> - output_messages = TRUE;\r
+> - } else {\r
+> - fprintf (stderr, "Invalid value for --output: %s\n", opt);\r
+> - return 1;\r
+> - }\r
+> - } else {\r
+> - fprintf (stderr, "Unrecognized option: %s\n", argv[i]);\r
+> - return 1;\r
+> - }\r
+> + opt_index = parse_arguments (argc, argv, options, 1);\r
+> +\r
+> + if (opt_index < 0) {\r
+> + return 1;\r
+> }\r
+> \r
+> - argc -= i;\r
+> - argv += i;\r
+> -\r
+> config = notmuch_config_open (ctx, NULL, NULL);\r
+> if (config == NULL)\r
+> return 1;\r
+> @@ -66,7 +59,7 @@ notmuch_count_command (void *ctx, int argc, char *argv[])\r
+> if (notmuch == NULL)\r
+> return 1;\r
+> \r
+> - query_str = query_string_from_args (ctx, argc, argv);\r
+> + query_str = query_string_from_args (ctx, argc-opt_index, argv+opt_index);\r
+> if (query_str == NULL) {\r
+> fprintf (stderr, "Out of memory.\n");\r
+> return 1;\r
+> @@ -82,10 +75,14 @@ notmuch_count_command (void *ctx, int argc, char *argv[])\r
+> return 1;\r
+> }\r
+> \r
+> - if (output_messages)\r
+> + switch (output) {\r
+> + case OUTPUT_MESSAGES:\r
+> printf ("%u\n", notmuch_query_count_messages (query));\r
+> - else\r
+> + break;\r
+> + case OUTPUT_THREADS:\r
+> printf ("%u\n", notmuch_query_count_threads (query));\r
+> + break;\r
+> + }\r
+> \r
+> notmuch_query_destroy (query);\r
+> notmuch_database_close (notmuch);\r
+> -- \r
+> 1.7.7.3\r
+> \r
+> _______________________________________________\r
+> notmuch mailing list\r
+> notmuch@notmuchmail.org\r
+> http://notmuchmail.org/mailman/listinfo/notmuch\r