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[babeltrace.git] / converter / babeltrace-cfg.c
index d3072488e0643f414c2cfe6014542919e2ec1fb0..8b3eebcfa262a2922982d34d969f8fb342e08095 100644 (file)
@@ -39,6 +39,7 @@
 
 #define SYSTEM_PLUGIN_PATH             INSTALL_LIBDIR "/babeltrace/plugins"
 #define DEFAULT_SOURCE_COMPONENT_NAME  "ctf.fs"
+#define DEFAULT_SINK_COMPONENT_NAME    "text.text"
 #define HOME_ENV_VAR                   "HOME"
 #define HOME_SUBPATH                   "/.babeltrace/plugins"
 
@@ -147,9 +148,6 @@ enum legacy_output_format {
        LEGACY_OUTPUT_FORMAT_DUMMY,
 };
 
-static bool omit_system_plugin_path;
-static bool omit_home_plugin_path;
-
 /*
  * Prints the "out of memory" error.
  */
@@ -2011,14 +2009,12 @@ bool validate_cfg(struct bt_config *cfg,
 
        /* Determine if the input and output should be legacy-style */
        if (*legacy_input_format != LEGACY_INPUT_FORMAT_NONE ||
-                       cfg->sources->len == 0 ||
                        !bt_value_array_is_empty(legacy_input_paths) ||
                        ctf_legacy_opts_is_any_set(ctf_legacy_opts)) {
                legacy_input = true;
        }
 
        if (*legacy_output_format != LEGACY_OUTPUT_FORMAT_NONE ||
-                       cfg->sinks->len == 0 ||
                        text_legacy_opts_is_any_set(text_legacy_opts)) {
                legacy_output = true;
        }
@@ -2288,7 +2284,7 @@ end:
 
 static int add_internal_plugin_paths(struct bt_config *cfg)
 {
-       if (!omit_home_plugin_path) {
+       if (!cfg->omit_home_plugin_path) {
                char path[PATH_MAX];
                const char *home_dir;
 
@@ -2312,7 +2308,7 @@ static int add_internal_plugin_paths(struct bt_config *cfg)
                }
        }
 
-       if (!omit_system_plugin_path) {
+       if (!cfg->omit_system_plugin_path) {
                if (plugin_paths_from_arg(cfg->plugin_paths,
                                SYSTEM_PLUGIN_PATH)) {
                        printf_err("Invalid system plugin path\n");
@@ -2324,26 +2320,82 @@ error:
        return -1;
 }
 
+static int append_sources_from_implicit_params(GPtrArray *sources,
+               struct bt_config_component *implicit_source_comp)
+{
+       size_t i;
+       size_t len = sources->len;
+
+       for (i = 0; i < len; i++) {
+               struct bt_config_component *comp;
+               struct bt_value *params_to_set;
+
+               comp = g_ptr_array_index(sources, i);
+               params_to_set = bt_value_map_extend(comp->params,
+                       implicit_source_comp->params);
+               if (!params_to_set) {
+                       printf_err("Cannot extend legacy component parameters with non-legacy parameters\n");
+                       goto error;
+               }
+               BT_MOVE(comp->params, params_to_set);
+       }
+       return 0;
+error:
+       return -1;
+}
+
+struct bt_config *bt_config_create(void)
+{
+       struct bt_config *cfg;
+
+       /* Create config */
+       cfg = g_new0(struct bt_config, 1);
+       if (!cfg) {
+               print_err_oom();
+               goto error;
+       }
+
+       bt_object_init(cfg, bt_config_destroy);
+       cfg->sources = g_ptr_array_new_with_free_func((GDestroyNotify) bt_put);
+       if (!cfg->sources) {
+               print_err_oom();
+               goto error;
+       }
+
+       cfg->sinks = g_ptr_array_new_with_free_func((GDestroyNotify) bt_put);
+       if (!cfg->sinks) {
+               print_err_oom();
+               goto error;
+       }
+
+       cfg->plugin_paths = bt_value_array_create();
+       if (!cfg->plugin_paths) {
+               print_err_oom();
+               goto error;
+       }
+end:
+       return cfg;
+error:
+       BT_PUT(cfg);
+       goto end;
+}
+
 /*
  * Returns a Babeltrace configuration, out of command-line arguments,
  * containing everything that is needed to instanciate specific
  * components with given parameters.
  *
- * *exit_code is set to the appropriate exit code to use as far as this
- * function goes.
- *
- * Return value is NULL on error, otherwise it's owned by the caller.
+ * Return value is set to the appropriate exit code to use.
  */
-struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_code)
+int bt_config_init_from_args(struct bt_config *cfg, int argc, const char *argv[])
 {
-       struct bt_config *cfg = NULL;
        poptContext pc = NULL;
        char *arg = NULL;
        struct ctf_legacy_opts ctf_legacy_opts;
        struct text_legacy_opts text_legacy_opts;
        enum legacy_input_format legacy_input_format = LEGACY_INPUT_FORMAT_NONE;
        enum legacy_output_format legacy_output_format =
-               LEGACY_OUTPUT_FORMAT_NONE;
+                       LEGACY_OUTPUT_FORMAT_NONE;
        struct bt_value *legacy_input_paths = NULL;
        struct bt_config_component *implicit_source_comp = NULL;
        struct bt_config_component *cur_cfg_comp = NULL;
@@ -2352,16 +2404,10 @@ struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_co
        enum bt_config_component_dest cur_cfg_comp_dest =
                BT_CONFIG_COMPONENT_DEST_SOURCE;
        struct bt_value *cur_base_params = NULL;
-       int opt;
+       int opt, ret = 0;
 
        memset(&ctf_legacy_opts, 0, sizeof(ctf_legacy_opts));
        memset(&text_legacy_opts, 0, sizeof(text_legacy_opts));
-       *exit_code = 0;
-
-       if (argc <= 1) {
-               print_usage(stdout);
-               goto end;
-       }
 
        text_legacy_opts.output = g_string_new(NULL);
        if (!text_legacy_opts.output) {
@@ -2387,26 +2433,6 @@ struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_co
                goto error;
        }
 
-       /* Create config */
-       cfg = g_new0(struct bt_config, 1);
-       if (!cfg) {
-               print_err_oom();
-               goto error;
-       }
-
-       bt_object_init(cfg, bt_config_destroy);
-       cfg->sources = g_ptr_array_new_with_free_func((GDestroyNotify) bt_put);
-       if (!cfg->sources) {
-               print_err_oom();
-               goto error;
-       }
-
-       cfg->sinks = g_ptr_array_new_with_free_func((GDestroyNotify) bt_put);
-       if (!cfg->sinks) {
-               print_err_oom();
-               goto error;
-       }
-
        legacy_input_paths = bt_value_array_create();
        if (!legacy_input_paths) {
                print_err_oom();
@@ -2424,12 +2450,6 @@ struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_co
                        DEFAULT_SOURCE_COMPONENT_NAME);
        }
 
-       cfg->plugin_paths = bt_value_array_create();
-       if (!cfg->plugin_paths) {
-               print_err_oom();
-               goto error;
-       }
-
        /* Parse options */
        pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
        if (!pc) {
@@ -2454,10 +2474,10 @@ struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_co
                        }
                        break;
                case OPT_OMIT_SYSTEM_PLUGIN_PATH:
-                       omit_system_plugin_path = true;
+                       cfg->omit_system_plugin_path = true;
                        break;
                case OPT_OMIT_HOME_PLUGIN_PATH:
-                       omit_home_plugin_path = true;
+                       cfg->omit_home_plugin_path = true;
                        break;
                case OPT_OUTPUT_PATH:
                        if (text_legacy_opts.output->len > 0) {
@@ -2529,7 +2549,7 @@ struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_co
                        assert(cur_base_params);
                        bt_put(cur_cfg_comp->params);
                        cur_cfg_comp->params = bt_value_copy(cur_base_params);
-                       if (!cur_cfg_comp) {
+                       if (!cur_cfg_comp->params) {
                                print_err_oom();
                                goto end;
                        }
@@ -2591,7 +2611,7 @@ struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_co
                        assert(cur_base_params);
                        bt_put(cur_cfg_comp->params);
                        cur_cfg_comp->params = bt_value_copy(cur_base_params);
-                       if (!cur_cfg_comp) {
+                       if (!cur_cfg_comp->params) {
                                print_err_oom();
                                goto end;
                        }
@@ -2839,26 +2859,9 @@ struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_co
                arg = NULL;
        }
 
-       if (add_internal_plugin_paths(cfg)) {
-               goto error;
-       }
-
-       /* Append current component configuration, if any */
-       if (cur_cfg_comp && !cur_is_implicit_source) {
-               add_cfg_comp(cfg, cur_cfg_comp, cur_cfg_comp_dest);
-       }
-       cur_cfg_comp = NULL;
-
-       if (use_implicit_source) {
-               add_cfg_comp(cfg, implicit_source_comp,
-                       BT_CONFIG_COMPONENT_DEST_SOURCE);
-               implicit_source_comp = NULL;
-       } else {
-               if (implicit_source_comp
-                               && !bt_value_map_is_empty(implicit_source_comp->params)) {
-                       printf_err("Arguments specified for implicit source, but an explicit source has been specified, overriding it\n");
-                       goto error;
-               }
+       if (argc <= 1) {
+               print_usage(stdout);
+               goto end;
        }
 
        /* Check for option parsing error */
@@ -2883,6 +2886,16 @@ struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_co
                }
        }
 
+       if (add_internal_plugin_paths(cfg)) {
+               goto error;
+       }
+
+       /* Append current component configuration, if any */
+       if (cur_cfg_comp && !cur_is_implicit_source) {
+               add_cfg_comp(cfg, cur_cfg_comp, cur_cfg_comp_dest);
+       }
+       cur_cfg_comp = NULL;
+
        /* Validate legacy/non-legacy options */
        if (!validate_cfg(cfg, &legacy_input_format, &legacy_output_format,
                        legacy_input_paths, &ctf_legacy_opts,
@@ -2902,6 +2915,24 @@ struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_co
                        printf_err("Cannot convert legacy input format options to source component instance(s)\n");
                        goto error;
                }
+               if (append_sources_from_implicit_params(cfg->sources,
+                               implicit_source_comp)) {
+                       printf_err("Cannot initialize legacy component parameters\n");
+                       goto error;
+               }
+               use_implicit_source = false;
+       } else {
+               if (use_implicit_source) {
+                       add_cfg_comp(cfg, implicit_source_comp,
+                               BT_CONFIG_COMPONENT_DEST_SOURCE);
+                       implicit_source_comp = NULL;
+               } else {
+                       if (implicit_source_comp
+                                       && !bt_value_map_is_empty(implicit_source_comp->params)) {
+                               printf_err("Arguments specified for implicit source, but an explicit source has been specified, overriding it\n");
+                               goto error;
+                       }
+               }
        }
 
        /*
@@ -2916,13 +2947,22 @@ struct bt_config *bt_config_from_args(int argc, const char *argv[], int *exit_co
                }
        }
 
+       if (cfg->sinks->len == 0) {
+               /* Use implicit sink as default. */
+               cur_cfg_comp = bt_config_component_from_arg(DEFAULT_SINK_COMPONENT_NAME);
+               if (!cur_cfg_comp) {
+                       printf_error("Cannot find implicit sink plugin \"%s\"\n",
+                               DEFAULT_SINK_COMPONENT_NAME);
+               }
+               add_cfg_comp(cfg, cur_cfg_comp,
+                       BT_CONFIG_COMPONENT_DEST_SINK);
+               cur_cfg_comp = NULL;
+       }
+
        goto end;
 
 error:
-       BT_PUT(cfg);
-       cfg = NULL;
-       *exit_code = 1;
-
+       ret = 1;
 end:
        if (pc) {
                poptFreeContext(pc);
@@ -2947,5 +2987,5 @@ end:
        BT_PUT(text_legacy_opts.names);
        BT_PUT(text_legacy_opts.fields);
        BT_PUT(legacy_input_paths);
-       return cfg;
+       return ret;
 }
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