-/*
- * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file filter.c The stand-alone filter program. */
#include <regex.h>
-#include <stdbool.h>
+#include <lopsub.h>
+#include "filter.lsg.h"
+#include "filter_cmd.lsg.h"
#include "para.h"
-#include "filter.cmdline.h"
#include "list.h"
+#include "lsu.h"
#include "sched.h"
-#include "ggo.h"
+#include "buffer_tree.h"
#include "filter.h"
#include "string.h"
#include "stdin.h"
#include "stdout.h"
#include "error.h"
+#include "fd.h"
+#include "version.h"
+
+/** Array of error strings. */
+DEFINE_PARA_ERRLIST;
+static struct lls_parse_result *lpr; /* command line options */
+
+#define CMD_PTR (lls_cmd(0, filter_suite))
+#define OPT_RESULT(_name) \
+ (lls_opt_result(LSG_FILTER_PARA_FILTER_OPT_ ## _name, lpr))
+#define OPT_GIVEN(_name) (lls_opt_given(OPT_RESULT(_name)))
+#define OPT_UINT32_VAL(_name) (lls_uint32_val(0, OPT_RESULT(_name)))
/** The list of all status items used by para_{server,audiod,gui}. */
-const char *status_item_list[] = {STATUS_ITEM_ARRAY};
+const char *status_item_list[] = {STATUS_ITEMS};
+/**
+ * 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. */
-INIT_FILTER_ERRLISTS;
-
/** The task that reads from stdin. */
static struct stdin_task stdin_task_struct;
/** 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 struct stdout_task *sot = &stdout_task_struct;
-/** Gengetopt struct that holds the command line args. */
-static struct filter_args_info conf;
-
static int loglevel;
INIT_STDERR_LOGGING(loglevel);
-static void open_filters(void)
+static void handle_help_flag(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;
+ char *help;
+
+ if (OPT_GIVEN(DETAILED_HELP))
+ help = lls_long_help(CMD_PTR);
+ else if (OPT_GIVEN(HELP))
+ help = lls_short_help(CMD_PTR);
+ else
+ return;
+ printf("%s\n", help);
+ free(help);
+ print_filter_helps(OPT_GIVEN(DETAILED_HELP));
+ exit(EXIT_SUCCESS);
}
-__noreturn static void print_help_and_die(void)
+static int parse_config(void)
{
- int d = conf.detailed_help_given;
- const char **p = d? filter_args_info_detailed_help
- : filter_args_info_help;
-
- 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);
-}
+ int ret;
-static int parse_config(int argc, char *argv[])
-{
- static char *cf; /* config file */
- struct stat statbuf;
-
- if (filter_cmdline_parser(argc, argv, &conf))
- return -E_FILTER_SYNTAX;
- HANDLE_VERSION_FLAG("filter", conf);
- 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);
- free(home);
- }
- if (!stat(cf, &statbuf)) {
- struct filter_cmdline_parser_params params = {
- .override = 0,
- .initialize = 0,
- .check_required = 0,
- .check_ambiguity = 0,
- .print_errors = 1
- };
- if (filter_cmdline_parser_config_file(cf, &conf, ¶ms))
- return -E_FILTER_SYNTAX;
+ version_handle_flag("filter", OPT_GIVEN(VERSION));
+ handle_help_flag();
+ ret = lsu_merge_config_file_options(NULL, "filter.conf",
+ &lpr, CMD_PTR, filter_suite, 0 /* default flags */);
+ if (ret < 0)
+ return ret;
+ loglevel = OPT_UINT32_VAL(LOGLEVEL);
+ if (!OPT_GIVEN(FILTER)) {
+ print_filter_list();
+ exit(EXIT_SUCCESS);
}
return 1;
}
-/* TODO: support more than one filter, actually parse options */
-static int main_btr(void)
-{
- return 42;
-}
-
/**
* The main function of para_filter.
*
*/
int main(int argc, char *argv[])
{
- int ret;
static struct sched s;
+ int i, ret;
+ const struct filter *f;
+ struct btr_node *parent;
+ struct filter_node **fns;
+ struct lls_parse_result *filter_lpr; /* per-filter options */
+ char *errctx;
- filter_init();
- ret = parse_config(argc, argv);
+ ret = lls(lls_parse(argc, argv, CMD_PTR, &lpr, &errctx));
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();
+ ret = parse_config();
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;
+ goto free_lpr;
+ sit->btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = "stdin"));
+ stdin_task_register(sit, &s);
+
+ fns = para_malloc(OPT_GIVEN(FILTER) * sizeof(*fns));
+ for (i = 0, parent = sit->btrn; i < OPT_GIVEN(FILTER); i++) {
+ const char *fa = lls_string_val(i, OPT_RESULT(FILTER));
+ const char *name;
+ struct filter_node *fn;
+ struct task_info ti;
+
+ fn = fns[i] = para_calloc(sizeof(*fn));
+ fn->filter_num = filter_setup(fa, &fn->conf, &filter_lpr);
+ name = filter_name(fn->filter_num);
+ fn->lpr = filter_lpr;
+ PARA_DEBUG_LOG("filter #%d: %s\n", i, name);
+ f = filter_get(fn->filter_num);
+ fn->btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = name, .parent = parent,
+ .handler = f->execute, .context = fn));
+ ti.name = name;
+ ti.pre_select = f->pre_select;
+ ti.post_select = f->post_select;
+ ti.context = fn;
+ if (f->open)
+ f->open(fn);
+ fn->task = task_register(&ti, &s);
+ parent = fn->btrn;
+ }
+ sot->btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = "stdout", .parent = parent));
+ stdout_task_register(sot, &s);
- register_task(&sit->task);
- register_task(&sot->task);
- register_task(&fc->task);
s.default_timeout.tv_sec = 1;
s.default_timeout.tv_usec = 0;
+ btr_log_tree(sit->btrn, LL_INFO);
ret = schedule(&s);
- free_filter_confs();
- close_filters(fc);
+ sched_shutdown(&s);
+ for (i--; i >= 0; i--) {
+ struct filter_node *fn = fns[i];
+
+ f = filter_get(fn->filter_num);
+ if (f->close)
+ f->close(fn);
+ btr_remove_node(&fn->btrn);
+ if (f->teardown)
+ f->teardown(fn->lpr, fn->conf);
+ free(fn);
+ }
+ free(fns);
+ btr_remove_node(&sit->btrn);
+ btr_remove_node(&sot->btrn);
+free_lpr:
+ lls_free_parse_result(lpr, CMD_PTR);
out:
- free(sit->buf);
- if (ret < 0)
- PARA_EMERG_LOG("%s\n", para_strerror(-ret));
- return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
+ if (ret < 0) {
+ if (errctx)
+ PARA_ERROR_LOG("%s\n", errctx);
+ free(errctx);
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ }
+ exit(ret < 0? EXIT_FAILURE : EXIT_SUCCESS);
}