Help Added to the Gluster-CLI for all sub commands (some deletions in the old patch)

Signed-off-by: Kaushik BV <kaushikbv@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 1156 (gluster --help should display all the options)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1156

5 files changed, 85 insertions, 56 deletions

diff --git a/cli/src/cli-cmd-log.c b/cli/src/cli-cmd-log.c
index 1b71f2f928f..e67f28091e8 100644
--- a/cli/src/cli-cmd-log.c
+++ b/cli/src/cli-cmd-log.c
@@ -37,6 +37,9 @@ extern struct rpc_clnt *global_rpc;
 
 extern rpc_clnt_prog_t *cli_rpc_prog;
 
+int cli_cmd_log_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
+                      const char **words, int wordcount);
+
 int
 cli_cmd_log_cbk (struct cli_state *state, struct cli_cmd_word *word,
                  const char **words, int wordcount)
@@ -49,10 +52,32 @@ struct cli_cmd cli_log_cmds[] = {
         { "log <VOLNAME> ...",
           cli_cmd_log_cbk,
           "set log level for <VOLNAME>"},
+	
+	{ "log --help",
+           cli_cmd_log_help_cbk,
+           "help command for log"},
 
         { NULL, NULL, NULL }
 };
 
+int
+cli_cmd_log_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
+                      const char **words, int wordcount)
+{
+        struct cli_cmd        *cmd = NULL;
+
+   
+
+        for (cmd = cli_log_cmds; cmd->pattern; cmd++)
+                cli_out ("%s - %s", cmd->pattern, cmd->desc);
+
+      
+
+        if (!state->rl_enabled)
+                exit (0);
+
+        return 0;
+}
 
 int
 cli_cmd_log_register (struct cli_state *state)
diff --git a/cli/src/cli-cmd-peer.c b/cli/src/cli-cmd-peer.c
index f1847a68cbc..fef29c164ec 100644
--- a/cli/src/cli-cmd-peer.c
+++ b/cli/src/cli-cmd-peer.c
@@ -37,6 +37,9 @@ extern struct rpc_clnt *global_rpc;
 
 extern rpc_clnt_prog_t *cli_rpc_prog;
 
+int cli_cmd_peer_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
+                      const char **words, int wordcount);
+
 void
 cli_cmd_probe_usage ()
 {
@@ -184,10 +187,33 @@ struct cli_cmd cli_probe_cmds[] = {
         { "peer status",
           cli_cmd_peer_status_cbk,
           "list status of peers"},
+	
+	{ "peer --help", 
+           cli_cmd_peer_help_cbk, 
+           "Help command for peer "},
+
 
         { NULL, NULL, NULL }
 };
 
+int
+cli_cmd_peer_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
+                      const char **words, int wordcount)
+{
+        struct cli_cmd        *cmd = NULL;
+
+   
+
+        for (cmd = cli_probe_cmds; cmd->pattern; cmd++)
+                cli_out ("%s - %s", cmd->pattern, cmd->desc);
+
+      
+
+        if (!state->rl_enabled)
+                exit (0);
+
+        return 0;
+}
 
 int
 cli_cmd_probe_register (struct cli_state *state)
diff --git a/cli/src/cli-cmd-volume.c b/cli/src/cli-cmd-volume.c
index ae2b6b2aaae..283233cf94e 100644
--- a/cli/src/cli-cmd-volume.c
+++ b/cli/src/cli-cmd-volume.c
@@ -36,6 +36,10 @@ extern struct rpc_clnt *global_rpc;
 
 extern rpc_clnt_prog_t *cli_rpc_prog;
 
+int
+cli_cmd_volume_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
+                      const char **words, int wordcount);
+
 void
 cli_cmd_volume_start_usage ()
 {
@@ -503,9 +507,29 @@ struct cli_cmd volume_cmds[] = {
           cli_cmd_volume_set_cbk,
          "set options for volume <VOLNAME>"},
 
+        { "volume --help",
+          cli_cmd_volume_help_cbk,
+          "display help for the volume command"},
+
+
         { NULL, NULL, NULL }
 };
 
+int
+cli_cmd_volume_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
+                      const char **words, int wordcount)
+{
+        struct cli_cmd        *cmd = NULL;
+
+        for (cmd = volume_cmds; cmd->pattern; cmd++)
+                cli_out ("%s - %s", cmd->pattern, cmd->desc);
+
+        
+        if (!state->rl_enabled)
+                exit (0);
+
+        return 0;
+}
 
 int
 cli_cmd_volume_register (struct cli_state *state)
diff --git a/cli/src/cli-cmd.c b/cli/src/cli-cmd.c
index e526fe8895d..ae4e2db2c1f 100644
--- a/cli/src/cli-cmd.c
+++ b/cli/src/cli-cmd.c
@@ -44,6 +44,9 @@ static pthread_mutex_t     conn_mutex = PTHREAD_MUTEX_INITIALIZER;
 int    cli_op_ret = 0;
 int    connected = 0;
 
+int cli_cmd_log_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
+                      const char **words, int wordcount);
+
 static gf_boolean_t
 cli_cmd_needs_connection (struct cli_cmd_word *word)
 {
@@ -92,6 +95,9 @@ cli_cmd_process (struct cli_state *state, int argc, char **argv)
                 return -1;
         }
 
+	if ( strcmp (word->word,"--help")==0 )
+		goto callback;
+
         await_conn = cli_cmd_needs_connection (word);
 
         if (await_conn) {
@@ -104,7 +110,7 @@ cli_cmd_process (struct cli_state *state, int argc, char **argv)
                 }
         }
 
-
+callback:
         ret = word->cbkfn (state, word, (const char **)argv, argc);
 
         return ret;
diff --git a/cli/src/cli.c b/cli/src/cli.c
index c165255a0ef..48490ddf4c5 100644
--- a/cli/src/cli.c
+++ b/cli/src/cli.c
@@ -76,9 +76,6 @@
 
 extern int connected;
 /* using argp for command line parsing */
-static char gf_doc[] = "";
-
-static char argp_doc[] = "COMMAND [PARAM ...]";
 
 const char *argp_program_version = ""                                 \
         PACKAGE_NAME" "PACKAGE_VERSION" built on "__DATE__" "__TIME__ \
@@ -91,14 +88,7 @@ const char *argp_program_version = ""                                 \
 
 const char *argp_program_bug_address = "<" PACKAGE_BUGREPORT ">";
 
-static struct argp_option gf_options[] = {
-        {0, 0, 0, 0, "Basic options:"},
-        {"debug", ARGP_DEBUG_KEY, 0, 0,
-         "Process runs in foreground and logs to console"},
-        {"remote-port", ARGP_PORT_KEY, "PORT", 0,
-         "glusterd port to connect with"},
-        {0, }
-};
+
 
 struct rpc_clnt *global_rpc;
 
@@ -107,44 +97,7 @@ rpc_clnt_prog_t *cli_rpc_prog;
 
 extern struct rpc_clnt_program cli3_1_prog;
 
-static error_t
-parse_opts (int key, char *arg, struct argp_state *argp_state)
-{
-        struct cli_state  *state = NULL;
-        char             **argv = NULL;
-
-        state = argp_state->input;
-
-        switch (key) {
-        case ARGP_DEBUG_KEY:
-                break;
-        case ARGP_PORT_KEY:
-                state->remote_port = strtol (arg, NULL, 0);
-                break;
-        case ARGP_KEY_ARG:
-                if (!state->argc) {
-                        argv = calloc (state->argc + 2,
-                                       sizeof (*state->argv));
-                } else {
-                        argv = realloc (state->argv, (state->argc + 2) *
-                                        sizeof (*state->argv));
-                }
-                if (!argv)
-                        return -1;
-
-                state->argv = argv;
-
-                argv[state->argc] = strdup (arg);
-                if (!argv[state->argc])
-                        return -1;
-                state->argc++;
-                argv[state->argc] = NULL;
-
-                break;
-        }
 
-        return 0;
-}
 
 
 static char *
@@ -375,14 +328,9 @@ int
 parse_cmdline (int argc, char *argv[], struct cli_state *state)
 {
         int         ret = 0;
-        struct argp argp = { 0,};
-
-        argp.options    = gf_options;
-        argp.parser     = parse_opts;
-        argp.args_doc   = argp_doc;
-        argp.doc        = gf_doc;
 
-        ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, NULL, state);
+	state->argc=argc-1;
+        state->argv=&argv[1];
 
         return ret;
 }