Put option parsing into a separate file.
authorJens Steinhauser <jens.steinhauser@gmail.com>
Tue, 15 Jul 2014 15:14:03 +0000 (17:14 +0200)
committerJens Steinhauser <jens.steinhauser@gmail.com>
Tue, 15 Jul 2014 15:14:03 +0000 (17:14 +0200)
Makefile.am
main.c
options.c [new file with mode: 0644]
sigrok-cli.h

index 138433035a7e733d9cda5e3ae69f1f9cb3313abf..c4b2b017f4eb2346dcdab0a7412241e982c46d61 100644 (file)
@@ -30,7 +30,8 @@ sigrok_cli_SOURCES = \
        decode.c \
        sigrok-cli.h \
        parsers.c \
-       anykey.c
+       anykey.c \
+       options.c
 
 dist_man_MANS = doc/sigrok-cli.1
 
diff --git a/main.c b/main.c
index ff3225fd2b35aee03728911d8efbd1bda71fda24..95b4258f477f4dc304ebf11fe7e7f52432316ddc 100644 (file)
--- a/main.c
+++ b/main.c
@@ -26,87 +26,6 @@ struct sr_context *sr_ctx = NULL;
 struct srd_session *srd_sess = NULL;
 #endif
 
-static gboolean opt_version = FALSE;
-gint opt_loglevel = SR_LOG_WARN; /* Show errors+warnings by default. */
-static gboolean opt_scan_devs = FALSE;
-gboolean opt_wait_trigger = FALSE;
-gchar *opt_input_file = NULL;
-gchar *opt_output_file = NULL;
-gchar *opt_drv = NULL;
-gchar *opt_config = NULL;
-static gchar *opt_channels = NULL;
-gchar *opt_channel_group = NULL;
-gchar *opt_triggers = NULL;
-gchar *opt_pds = NULL;
-#ifdef HAVE_SRD
-static gchar *opt_pd_stack = NULL;
-static gchar *opt_pd_annotations = NULL;
-static gchar *opt_pd_meta = NULL;
-static gchar *opt_pd_binary = NULL;
-#endif
-gchar *opt_input_format = NULL;
-gchar *opt_output_format = NULL;
-static gchar *opt_show = NULL;
-gchar *opt_time = NULL;
-gchar *opt_samples = NULL;
-gchar *opt_frames = NULL;
-gchar *opt_continuous = NULL;
-static gchar *opt_set = NULL;
-
-static GOptionEntry optargs[] = {
-       {"version", 'V', 0, G_OPTION_ARG_NONE, &opt_version,
-                       "Show version and support list", NULL},
-       {"loglevel", 'l', 0, G_OPTION_ARG_INT, &opt_loglevel,
-                       "Set loglevel (5 is most verbose)", NULL},
-       {"driver", 'd', 0, G_OPTION_ARG_STRING, &opt_drv,
-                       "The driver to use", NULL},
-       {"config", 'c', 0, G_OPTION_ARG_STRING, &opt_config,
-                       "Specify device configuration options", NULL},
-       {"input-file", 'i', 0, G_OPTION_ARG_FILENAME, &opt_input_file,
-                       "Load input from file", NULL},
-       {"input-format", 'I', 0, G_OPTION_ARG_STRING, &opt_input_format,
-                       "Input format", NULL},
-       {"output-file", 'o', 0, G_OPTION_ARG_FILENAME, &opt_output_file,
-                       "Save output to file", NULL},
-       {"output-format", 'O', 0, G_OPTION_ARG_STRING, &opt_output_format,
-                       "Output format", NULL},
-       {"channels", 'C', 0, G_OPTION_ARG_STRING, &opt_channels,
-                       "Channels to use", NULL},
-       {"channel-group", 'g', 0, G_OPTION_ARG_STRING, &opt_channel_group,
-                       "Channel groups", NULL},
-       {"triggers", 't', 0, G_OPTION_ARG_STRING, &opt_triggers,
-                       "Trigger configuration", NULL},
-       {"wait-trigger", 'w', 0, G_OPTION_ARG_NONE, &opt_wait_trigger,
-                       "Wait for trigger", NULL},
-#ifdef HAVE_SRD
-       {"protocol-decoders", 'P', 0, G_OPTION_ARG_STRING, &opt_pds,
-                       "Protocol decoders to run", NULL},
-       {"protocol-decoder-stack", 'S', 0, G_OPTION_ARG_STRING, &opt_pd_stack,
-                       "Protocol decoder stack", NULL},
-       {"protocol-decoder-annotations", 'A', 0, G_OPTION_ARG_STRING, &opt_pd_annotations,
-                       "Protocol decoder annotation(s) to show", NULL},
-       {"protocol-decoder-meta", 'M', 0, G_OPTION_ARG_STRING, &opt_pd_meta,
-                       "Protocol decoder meta output to show", NULL},
-       {"protocol-decoder-binary", 'B', 0, G_OPTION_ARG_STRING, &opt_pd_binary,
-                       "Protocol decoder binary output to show", NULL},
-#endif
-       {"scan", 0, 0, G_OPTION_ARG_NONE, &opt_scan_devs,
-                       "Scan for devices", NULL},
-       {"show", 0, 0, G_OPTION_ARG_NONE, &opt_show,
-                       "Show device detail", NULL},
-       {"time", 0, 0, G_OPTION_ARG_STRING, &opt_time,
-                       "How long to sample (ms)", NULL},
-       {"samples", 0, 0, G_OPTION_ARG_STRING, &opt_samples,
-                       "Number of samples to acquire", NULL},
-       {"frames", 0, 0, G_OPTION_ARG_STRING, &opt_frames,
-                       "Number of frames to acquire", NULL},
-       {"continuous", 0, 0, G_OPTION_ARG_NONE, &opt_continuous,
-                       "Sample continuously", NULL},
-       {"set", 0, 0, G_OPTION_ARG_NONE, &opt_set, "Set device options only", NULL},
-       {NULL, 0, 0, 0, NULL, NULL, NULL}
-};
-
-
 static void logger(const gchar *log_domain, GLogLevelFlags log_level,
                   const gchar *message, gpointer cb_data)
 {
@@ -187,21 +106,10 @@ static void set_options(void)
 
 int main(int argc, char **argv)
 {
-       GOptionContext *context;
-       GError *error;
-       int ret;
-       char *help;
-
        g_log_set_default_handler(logger, NULL);
 
-       context = g_option_context_new(NULL);
-       g_option_context_add_main_entries(context, optargs, NULL);
-
-       ret = 1;
-       error = NULL;
-       if (!g_option_context_parse(context, &argc, &argv, &error)) {
-               g_critical("%s", error->message);
-               goto done;
+       if (parse_options(argc, argv)) {
+               return 1;
        }
 
        /* Set the loglevel (amount of messages to output) for libsigrok. */
@@ -268,24 +176,17 @@ int main(int argc, char **argv)
                set_options();
        else if (opt_samples || opt_time || opt_frames || opt_continuous)
                run_session();
-       else {
-               help = g_option_context_get_help(context, TRUE, NULL);
-               printf("%s", help);
-               g_free(help);
-       }
+       else
+               show_help();
 
 #ifdef HAVE_SRD
        if (opt_pds)
                srd_exit();
 #endif
 
-       ret = 0;
-
 done:
        if (sr_ctx)
                sr_exit(sr_ctx);
 
-       g_option_context_free(context);
-
-       return ret;
+       return 0;
 }
diff --git a/options.c b/options.c
new file mode 100644 (file)
index 0000000..b26ca4b
--- /dev/null
+++ b/options.c
@@ -0,0 +1,136 @@
+/*
+ * This file is part of the sigrok-cli project.
+ *
+ * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "sigrok-cli.h"
+#include <glib.h>
+
+gboolean opt_version = FALSE;
+gint opt_loglevel = SR_LOG_WARN; /* Show errors+warnings by default. */
+gboolean opt_scan_devs = FALSE;
+gboolean opt_wait_trigger = FALSE;
+gchar *opt_input_file = NULL;
+gchar *opt_output_file = NULL;
+gchar *opt_drv = NULL;
+gchar *opt_config = NULL;
+gchar *opt_channels = NULL;
+gchar *opt_channel_group = NULL;
+gchar *opt_triggers = NULL;
+gchar *opt_pds = NULL;
+#ifdef HAVE_SRD
+gchar *opt_pd_stack = NULL;
+gchar *opt_pd_annotations = NULL;
+gchar *opt_pd_meta = NULL;
+gchar *opt_pd_binary = NULL;
+#endif
+gchar *opt_input_format = NULL;
+gchar *opt_output_format = NULL;
+gchar *opt_show = NULL;
+gchar *opt_time = NULL;
+gchar *opt_samples = NULL;
+gchar *opt_frames = NULL;
+gchar *opt_continuous = NULL;
+gchar *opt_set = NULL;
+
+static const GOptionEntry optargs[] = {
+       {"version", 'V', 0, G_OPTION_ARG_NONE, &opt_version,
+                       "Show version and support list", NULL},
+       {"loglevel", 'l', 0, G_OPTION_ARG_INT, &opt_loglevel,
+                       "Set loglevel (5 is most verbose)", NULL},
+       {"driver", 'd', 0, G_OPTION_ARG_STRING, &opt_drv,
+                       "The driver to use", NULL},
+       {"config", 'c', 0, G_OPTION_ARG_STRING, &opt_config,
+                       "Specify device configuration options", NULL},
+       {"input-file", 'i', 0, G_OPTION_ARG_FILENAME, &opt_input_file,
+                       "Load input from file", NULL},
+       {"input-format", 'I', 0, G_OPTION_ARG_STRING, &opt_input_format,
+                       "Input format", NULL},
+       {"output-file", 'o', 0, G_OPTION_ARG_FILENAME, &opt_output_file,
+                       "Save output to file", NULL},
+       {"output-format", 'O', 0, G_OPTION_ARG_STRING, &opt_output_format,
+                       "Output format", NULL},
+       {"channels", 'C', 0, G_OPTION_ARG_STRING, &opt_channels,
+                       "Channels to use", NULL},
+       {"channel-group", 'g', 0, G_OPTION_ARG_STRING, &opt_channel_group,
+                       "Channel groups", NULL},
+       {"triggers", 't', 0, G_OPTION_ARG_STRING, &opt_triggers,
+                       "Trigger configuration", NULL},
+       {"wait-trigger", 'w', 0, G_OPTION_ARG_NONE, &opt_wait_trigger,
+                       "Wait for trigger", NULL},
+#ifdef HAVE_SRD
+       {"protocol-decoders", 'P', 0, G_OPTION_ARG_STRING, &opt_pds,
+                       "Protocol decoders to run", NULL},
+       {"protocol-decoder-stack", 'S', 0, G_OPTION_ARG_STRING, &opt_pd_stack,
+                       "Protocol decoder stack", NULL},
+       {"protocol-decoder-annotations", 'A', 0, G_OPTION_ARG_STRING, &opt_pd_annotations,
+                       "Protocol decoder annotation(s) to show", NULL},
+       {"protocol-decoder-meta", 'M', 0, G_OPTION_ARG_STRING, &opt_pd_meta,
+                       "Protocol decoder meta output to show", NULL},
+       {"protocol-decoder-binary", 'B', 0, G_OPTION_ARG_STRING, &opt_pd_binary,
+                       "Protocol decoder binary output to show", NULL},
+#endif
+       {"scan", 0, 0, G_OPTION_ARG_NONE, &opt_scan_devs,
+                       "Scan for devices", NULL},
+       {"show", 0, 0, G_OPTION_ARG_NONE, &opt_show,
+                       "Show device detail", NULL},
+       {"time", 0, 0, G_OPTION_ARG_STRING, &opt_time,
+                       "How long to sample (ms)", NULL},
+       {"samples", 0, 0, G_OPTION_ARG_STRING, &opt_samples,
+                       "Number of samples to acquire", NULL},
+       {"frames", 0, 0, G_OPTION_ARG_STRING, &opt_frames,
+                       "Number of frames to acquire", NULL},
+       {"continuous", 0, 0, G_OPTION_ARG_NONE, &opt_continuous,
+                       "Sample continuously", NULL},
+       {"set", 0, 0, G_OPTION_ARG_NONE, &opt_set, "Set device options only", NULL},
+       {NULL, 0, 0, 0, NULL, NULL, NULL}
+};
+
+/* Parses the command line and sets all the 'opt_...' variables.
+   Returns zero on success, non-zero otherwise. */
+int parse_options(int argc, char **argv)
+{
+       GError *error = NULL;
+       GOptionContext *context = g_option_context_new(NULL);
+       int ret = 1;
+
+       g_option_context_add_main_entries(context, optargs, NULL);
+
+       if (!g_option_context_parse(context, &argc, &argv, &error)) {
+               g_critical("%s", error->message);
+               goto done;
+       }
+
+       ret = 0;
+
+done:
+       g_option_context_free(context);
+
+       return ret;
+}
+
+void show_help(void)
+{
+       GOptionContext *context = g_option_context_new(NULL);
+       g_option_context_add_main_entries(context, optargs, NULL);
+
+       char *help = g_option_context_get_help(context, TRUE, NULL);
+       printf("%s", help);
+       g_free(help);
+
+       g_option_context_free(context);
+}
index 2416b95f54e32d60b6ab22126a4a36cfc68579d3..a3289c86edbcd0f196295ca4313dda8fa8127824 100644 (file)
@@ -78,4 +78,34 @@ int canon_cmp(const char *str1, const char *str2);
 void add_anykey(void);
 void clear_anykey(void);
 
+/* options.c */
+extern gboolean opt_version;
+extern gint opt_loglevel;
+extern gboolean opt_scan_devs;
+extern gboolean opt_wait_trigger;
+extern gchar *opt_input_file;
+extern gchar *opt_output_file;
+extern gchar *opt_drv;
+extern gchar *opt_config;
+extern gchar *opt_channels;
+extern gchar *opt_channel_group;
+extern gchar *opt_triggers;
+extern gchar *opt_pds;
+#ifdef HAVE_SRD
+extern gchar *opt_pd_stack;
+extern gchar *opt_pd_annotations;
+extern gchar *opt_pd_meta;
+extern gchar *opt_pd_binary;
+#endif
+extern gchar *opt_input_format;
+extern gchar *opt_output_format;
+extern gchar *opt_show;
+extern gchar *opt_time;
+extern gchar *opt_samples;
+extern gchar *opt_frames;
+extern gchar *opt_continuous;
+extern gchar *opt_set;
+int parse_options(int argc, char **argv);
+void show_help(void);
+
 #endif