/*
- * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file filter.c The stand-alone filter program. */
#include <regex.h>
-#include <stdbool.h>
#include "para.h"
#include "filter.cmdline.h"
#include "stdin.h"
#include "stdout.h"
#include "error.h"
+#include "version.h"
/** The list of all status items used by para_{server,audiod,gui}. */
const char *status_item_list[] = {STATUS_ITEM_ARRAY};
+/**
+ * Dummy version which only contains NULL pointers.
+ *
+ * This is used by the amp filter which first tries to obtain the amplification
+ * value from an element in this array.
+ */
char *stat_item_values[NUM_STAT_ITEMS] = {NULL};
/** Initialize the array of errors for para_filter. */
/** pointer to the stdin task. */
static struct stdin_task *sit = &stdin_task_struct;
-/** The task that filters the data. */
-static struct filter_chain filter_chain_struct;
-/** Pointer to the filter chain. */
-static struct filter_chain *fc = &filter_chain_struct;
-
/** The task that writes converted data to stdout. */
static struct stdout_task stdout_task_struct;
/** Pointer to the stdout task. */
static int loglevel;
INIT_STDERR_LOGGING(loglevel);
-static void open_filters(void)
-{
- int i;
- struct filter_node *fn;
-
- FOR_EACH_FILTER_NODE(fn, fc, i) {
- struct filter *f = filters + fn->filter_num;
- f->open(fn);
- PARA_INFO_LOG("opened %s filter\n", f->name);
- fc->outbufp = &fn->buf;
- fc->out_loaded = &fn->loaded;
- }
-}
-
-static void free_filter_confs(void)
-{
- int i;
- struct filter_node *fn;
-
- FOR_EACH_FILTER_NODE(fn, fc, i)
- free(fn->conf);
-}
-
-static int init_filter_chain(void)
-{
- int i, ret;
- struct filter_node *fn;
-
- if (!conf.filter_given)
- return -E_NO_FILTERS;
- fc->num_filters = conf.filter_given;
- fc->filter_nodes = para_calloc(fc->num_filters * sizeof(struct filter_node));
- fc->inbufp = &sit->buf;
- fc->in_loaded = &sit->loaded;
- fc->input_error = &sit->task.error;
- fc->task.error = 0;
- fc->output_error = &sot->task.error;
- fc->task.post_select = filter_post_select;
- sprintf(fc->task.status, "filter chain");
-
- FOR_EACH_FILTER_NODE(fn, fc, i) {
- char *fa = conf.filter_arg[i];
- fn = fc->filter_nodes + i;
- ret = check_filter_arg(fa, &fn->conf);
- if (ret < 0)
- goto err;
- fn->filter_num = ret;
- fn->fc = fc;
- INIT_LIST_HEAD(&fn->callbacks);
- PARA_DEBUG_LOG("filter #%d: %s\n", i, filters[fn->filter_num].name);
- }
- open_filters();
- return 1;
-err:
- free_filter_confs();
- free(fc->filter_nodes);
- return ret;
-}
-
__noreturn static void print_help_and_die(void)
{
- int d = conf.detailed_help_given;
- const char **p = d? filter_args_info_detailed_help
- : filter_args_info_help;
+ struct ggo_help h = DEFINE_GGO_HELP(filter);
+ bool d = conf.detailed_help_given;
- printf_or_die("%s\n\n", FILTER_CMDLINE_PARSER_PACKAGE "-"
- FILTER_CMDLINE_PARSER_VERSION);
- printf_or_die("%s\n\n", filter_args_info_usage);
- for (; *p; p++)
- printf_or_die("%s\n", *p);
- print_filter_helps(d);
- exit(0);
+ ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
+ print_filter_helps(d? GPH_MODULE_FLAGS_DETAILED : GPH_MODULE_FLAGS);
+ exit(EXIT_SUCCESS);
}
-static int parse_config(int argc, char *argv[])
+static int parse_config(void)
{
static char *cf; /* config file */
struct stat statbuf;
- if (filter_cmdline_parser(argc, argv, &conf))
- return -E_FILTER_SYNTAX;
- HANDLE_VERSION_FLAG("filter", conf);
+ version_handle_flag("filter", conf.version_given);
if (conf.help_given || conf.detailed_help_given)
print_help_and_die();
- loglevel = get_loglevel_by_name(conf.loglevel_arg);
if (!cf) {
char *home = para_homedir();
cf = make_message("%s/.paraslash/filter.conf", home);
.check_ambiguity = 0,
.print_errors = 1
};
- if (filter_cmdline_parser_config_file(cf, &conf, ¶ms))
- return -E_FILTER_SYNTAX;
+ filter_cmdline_parser_config_file(cf, &conf, ¶ms);
+ loglevel = get_loglevel_by_name(conf.loglevel_arg);
}
+ if (!conf.filter_given)
+ return -E_NO_FILTERS;
return 1;
}
-/* TODO: support buffer tree, not just a chain. */
-static int __noreturn main_btr(void)
+/**
+ * The main function of para_filter.
+ *
+ * Para_filter reads data from stdin, converts it by using a chain
+ * of filters (specified on the command line) and writes the resulting
+ * data to stdout.
+ *
+ * \param argc Number of command line options.
+ * \param argv Vector of arguments.
+ *
+ * \return \a EXIT_SUCCESS on success, EXIT_FAILURE on errors.
+ */
+int main(int argc, char *argv[])
{
static struct sched s;
int i, ret;
- struct filter *f;
+ const struct filter *f;
struct btr_node *parent;
struct filter_node **fns;
- sit->btrn = btr_new_node("stdin", NULL, NULL, NULL);
- stdin_set_defaults(sit);
- register_task(&sit->task);
+ filter_cmdline_parser(argc, argv, &conf); /* aborts on errors */
+ loglevel = get_loglevel_by_name(conf.loglevel_arg);
+ filter_init();
+ ret = parse_config();
+ if (ret < 0)
+ goto out;
+ sit->btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = "stdin"));
+ stdin_task_register(sit, &s);
fns = para_malloc(conf.filter_given * sizeof(*fns));
for (i = 0, parent = sit->btrn; i < conf.filter_given; i++) {
char *fa = conf.filter_arg[i];
struct filter_node *fn;
+ struct task_info ti;
fn = fns[i] = para_calloc(sizeof(*fn));
ret = check_filter_arg(fa, &fn->conf);
if (ret < 0) {
free(fn);
- goto out;
+ goto out_cleanup;
}
fn->filter_num = ret;
- f = filters + fn->filter_num;
- sprintf(fn->task.status, "%s", f->name);
+ f = filter_get(fn->filter_num);
PARA_DEBUG_LOG("filter #%d: %s\n", i, f->name);
- fn->btrn = btr_new_node(f->name, parent, f->execute, fn);
- fn->task.pre_select = f->pre_select;
- fn->task.post_select = f->post_select;
+ fn->btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = f->name, .parent = parent,
+ .handler = f->execute, .context = fn));
+ ti.name = f->name;
+ ti.pre_select = f->pre_select;
+ ti.post_select = f->post_select;
+ ti.context = fn;
f->open(fn);
- register_task(&fn->task);
+ fn->task = task_register(&ti, &s);
parent = fn->btrn;
}
- sot->btrn = btr_new_node("stdout", parent, NULL, NULL);
- stdout_set_defaults(sot);
- register_task(&sot->task);
+ sot->btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = "stdout", .parent = parent));
+ stdout_task_register(sot, &s);
s.default_timeout.tv_sec = 1;
s.default_timeout.tv_usec = 0;
btr_log_tree(sit->btrn, LL_INFO);
ret = schedule(&s);
-out:
+ sched_shutdown(&s);
+out_cleanup:
for (i--; i >= 0; i--) {
struct filter_node *fn = fns[i];
- f = filters + fn->filter_num;
- f->close(fn);
- btr_free_node(fn->btrn);
- free(fn->conf);
+ f = filter_get(fn->filter_num);
+ if (f->close)
+ f->close(fn);
+ btr_remove_node(&fn->btrn);
+ if (f->free_config)
+ f->free_config(fn->conf);
free(fn);
}
free(fns);
- btr_free_node(sit->btrn);
- btr_free_node(sot->btrn);
- if (ret < 0)
- PARA_EMERG_LOG("%s\n", para_strerror(-ret));
- exit(ret < 0? EXIT_FAILURE : EXIT_SUCCESS);
-}
-
-/**
- * The main function of para_filter.
- *
- * Para_filter reads data from stdin, converts it by using a chain
- * of filters (specified on the command line) and writes the resulting
- * data to stdout.
- *
- * \param argc Number of command line options.
- * \param argv Vector of arguments.
- *
- * \return \a EXIT_SUCCESS on success, EXIT_FAILURE on errors.
- */
-int main(int argc, char *argv[])
-{
- int ret;
- static struct sched s;
-
- filter_init();
- ret = parse_config(argc, argv);
- if (ret < 0)
- goto out;
- if (conf.buffer_tree_given) {
- ret = main_btr();
- goto out;
- }
- stdin_set_defaults(sit);
- sit->buf = para_malloc(sit->bufsize),
-
- ret = init_filter_chain();
- if (ret < 0)
- goto out;
- sit->output_error = &fc->task.error;
-
- stdout_set_defaults(sot);
- sot->bufp = fc->outbufp;
- sot->loaded = fc->out_loaded;
- sot->input_error = &fc->task.error;
-
- register_task(&sit->task);
- register_task(&sot->task);
- register_task(&fc->task);
- s.default_timeout.tv_sec = 1;
- s.default_timeout.tv_usec = 0;
- ret = schedule(&s);
- close_filters(fc);
+ btr_remove_node(&sit->btrn);
+ btr_remove_node(&sot->btrn);
out:
- free(sit->buf);
if (ret < 0)
PARA_EMERG_LOG("%s\n", para_strerror(-ret));
- return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
+ exit(ret < 0? EXIT_FAILURE : EXIT_SUCCESS);
}
projects / paraslash.git / blobdiff