sigrok plugin: Ensure consistent logging prefix.

* Make sure all logging is using the "sigrok plugin: " prefix.
* Improved logging when handling the "LogLevel" option.
* Renamed free_drvopts() to sigrok_free_drvopts(). All functions now use the
  "sigrok_" prefix.
* Don't abort parsing a "Device" block when encountering an incorrect number of
  arguments. The cf_util_* functions will complain about that.

diff --git a/src/sigrok.c b/src/sigrok.c
index 245a64c..ba3e406 100644 (file)
--- a/src/sigrok.c
+++ b/src/sigrok.c
@@ -58,7 +58,7 @@ static int sigrok_log_callback(void*cb_data __attribute__((unused)),
 
        if (msg_loglevel <= loglevel) {
                vsnprintf(s, 512, format, args);
-               plugin_log(LOG_INFO, "sigrok: %s", s);
+               plugin_log(LOG_INFO, "sigrok plugin: %s", s);
        }
 
        return 0;
@@ -70,24 +70,19 @@ static int sigrok_config_device(oconfig_item_t *ci)
        int i;
 
        if (!(cfdev = malloc(sizeof(struct config_device)))) {
-               ERROR("malloc() failed.");
+               ERROR("sigrok plugin: malloc() failed.");
                return -1;
        }
        memset(cfdev, 0, sizeof(*cfdev));
        if (cf_util_get_string(ci, &cfdev->name)) {
                free(cfdev);
-               WARNING("Invalid device name.");
+               WARNING("sigrok plugin: Invalid device name.");
                return -1;
        }
        cfdev->min_dispatch_interval = DEFAULT_MIN_DISPATCH_INTERVAL;
 
        for (i = 0; i < ci->children_num; i++) {
                oconfig_item_t *item = ci->children + i;
-               if (item->values_num != 1) {
-                       free(cfdev);
-                       WARNING("Missing value for '%s'.", item->key);
-                       return -1;
-               }
                if (!strcasecmp(item->key, "driver"))
                        cf_util_get_string(item, &cfdev->driver);
                else if (!strcasecmp(item->key, "conn"))
@@ -97,7 +92,8 @@ static int sigrok_config_device(oconfig_item_t *ci)
                else if (!strcasecmp(item->key, "minimuminterval"))
                        cf_util_get_cdtime(item, &cfdev->min_dispatch_interval);
                else
-                       WARNING("Invalid keyword '%s'.", item->key);
+                       WARNING("sigrok plugin: Invalid keyword \"%s\".",
+                                       item->key);
        }
 
        config_devices = g_slist_append(config_devices, cfdev);
@@ -107,20 +103,31 @@ static int sigrok_config_device(oconfig_item_t *ci)
 
 static int sigrok_config(oconfig_item_t *ci)
 {
-       int tmp, i;
+       int i;
 
        for (i = 0; i < ci->children_num; i++) {
                oconfig_item_t *item = ci->children + i;
-               if (!strcasecmp(item->key, "loglevel")) {
-                       if (cf_util_get_int(item, &tmp) || tmp < 0 || tmp > 5) {
-                               ERROR("Invalid loglevel");
+               if (strcasecmp("LogLevel", item->key) == 0) {
+                       int status;
+                       int tmp = -1;
+
+                       status = cf_util_get_int (item, &tmp);
+                       if (status != 0)
+                               continue;
+                       else if ((tmp < 0) || (tmp > 5)) {
+                               ERROR ("sigrok plugin: The \"LogLevel\" "
+                                               "configuration option expects "
+                                               "an integer between 0 and 5 "
+                                               "(inclusive); you provided %i.",
+                                               tmp);
                                continue;
                        }
                        loglevel = tmp;
                } else if (!strcasecmp(item->key, "Device"))
                        sigrok_config_device(item);
                else
-                       WARNING("Invalid keyword '%s'.", item->key);
+                       WARNING("sigrok plugin: Invalid keyword \"%s\".",
+                                       item->key);
        }
 
        return 0;
@@ -169,22 +176,27 @@ static void sigrok_feed_callback(const struct sr_dev_inst *sdi,
                }
                cfdev = NULL;
        }
+
        if (!cfdev) {
-               ERROR("Unknown device instance in sigrok driver %s.", sdi->driver->name);
+               ERROR("sigrok plugin: Received data from driver \"%s\" but "
+                               "can't find a configuration / device matching "
+                               "it.", sdi->driver->name);
                return;
        }
 
        if (packet->type == SR_DF_END) {
                /* TODO: try to restart acquisition after a delay? */
-               WARNING("sigrok: acquisition for '%s' ended.", cfdev->name);
+               WARNING("sigrok plugin: acquisition for \"%s\" ended.",
+                               cfdev->name);
                return;
        }
 
        if (packet->type != SR_DF_ANALOG)
                return;
 
-       if (cfdev->min_dispatch_interval && \
-                       cdtime() - cfdev->last_dispatch < cfdev->min_dispatch_interval)
+       if ((cfdev->min_dispatch_interval != 0)
+                       && ((cdtime() - cfdev->last_dispatch)
+                               < cfdev->min_dispatch_interval))
                return;
 
        /* Ignore all but the first sample on the first probe. */
@@ -197,13 +209,12 @@ static void sigrok_feed_callback(const struct sr_dev_inst *sdi,
        ssnprintf(vl.plugin_instance, sizeof(vl.plugin_instance),
                        "%s", cfdev->name);
        sstrncpy(vl.type, sigrok_value_type(analog), sizeof(vl.type));
-       plugin_dispatch_values(&vl);
 
+       plugin_dispatch_values(&vl);
        cfdev->last_dispatch = cdtime();
-
 }
 
-static void free_drvopts(struct sr_config *src)
+static void sigrok_free_drvopts(struct sr_config *src)
 {
        g_variant_unref(src->data);
        g_free(src);
@@ -236,15 +247,17 @@ static int sigrok_init_driver(struct config_device *cfdev,
                drvopts = g_slist_append(drvopts, src);
        }
        devlist = sr_driver_scan(drv, drvopts);
-       g_slist_free_full(drvopts, (GDestroyNotify)free_drvopts);
+       g_slist_free_full(drvopts, (GDestroyNotify)sigrok_free_drvopts);
        if (!devlist) {
                /* Not an error, but the user should know about it. */
-               WARNING("No device found for '%s'.", cfdev->name);
+               WARNING("sigrok plugin: No device found for \"%s\".",
+                               cfdev->name);
                return 0;
        }
 
        if (g_slist_length(devlist) > 1) {
-               INFO("sigrok: %d sigrok devices for device entry '%s': must be 1.",
+               INFO("sigrok plugin: %d sigrok devices for device entry "
+                               "\"%s\": must be 1.",
                                g_slist_length(devlist), cfdev->name);
                return -1;
        }
@@ -254,7 +267,7 @@ static int sigrok_init_driver(struct config_device *cfdev,
                        cfdev->sdi->vendor ? cfdev->sdi->vendor : "",
                        cfdev->sdi->model ? cfdev->sdi->model : "",
                        cfdev->sdi->version ? cfdev->sdi->version : "");
-       INFO("sigrok: Device '%s' is a %s", cfdev->name, hwident);
+       INFO("sigrok plugin: Device \"%s\" is a %s", cfdev->name, hwident);
 
        if (sr_dev_open(cfdev->sdi) != SR_OK)
                return -1;
@@ -276,7 +289,8 @@ static void *sigrok_read_thread(void *arg __attribute__((unused)))
        sr_log_loglevel_set(loglevel);
 
        if ((ret = sr_init(&sr_ctx)) != SR_OK) {
-               ERROR("Failed to initialize libsigrok: %s.", sr_strerror(ret));
+               ERROR("sigrok plugin: Failed to initialize libsigrok: %s.",
+                               sr_strerror(ret));
                return NULL;
        }
 
@@ -295,7 +309,8 @@ static void *sigrok_read_thread(void *arg __attribute__((unused)))
                        }
                }
                if (!drv) {
-                       ERROR("sigrok: Unknown driver '%s'.", cfdev->driver);
+                       ERROR("sigrok plugin: Unknown driver \"%s\".",
+                                       cfdev->driver);
                        return NULL;
                }
 
@@ -308,7 +323,8 @@ static void *sigrok_read_thread(void *arg __attribute__((unused)))
 
        if (num_devices > 0) {
                /* Do this only when we're sure there's hardware to talk to. */
-               if (sr_session_datafeed_callback_add(sigrok_feed_callback, NULL) != SR_OK)
+               if (sr_session_datafeed_callback_add(sigrok_feed_callback, NULL)
+                               != SR_OK)
                        return NULL;
 
                /* Start acquisition on all devices. */
@@ -337,13 +353,14 @@ static int sigrok_init(void)
        int status;
 
        if (sr_thread_running) {
-               ERROR("sigrok: Thread already running.");
+               ERROR("sigrok plugin: Thread already running.");
                return -1;
        }
 
        if ((status = plugin_thread_create(&sr_thread, NULL, sigrok_read_thread,
                        NULL)) != 0) {
-               ERROR("sigrok: Failed to create thread: %s.", strerror(status));
+               ERROR("sigrok plugin: Failed to create thread: %s.",
+                               strerror(status));
                return -1;
        }
        sr_thread_running = TRUE;
@@ -376,9 +393,7 @@ static int sigrok_shutdown(void)
 
 void module_register(void)
 {
-
        plugin_register_complex_config("sigrok", sigrok_config);
        plugin_register_init("sigrok", sigrok_init);
        plugin_register_shutdown("sigrok", sigrok_shutdown);
-
 }