Convert filters to lopsub.

[paraslash.git] / filter.c

diff --git a/filter.c b/filter.c
index 79574db14c2299af0dda1b40bbf8215d2a3f1ae7..1deaf6dacb142300519c973a5c1f8c9be4dd75a5 100644 (file)
--- a/filter.c
+++ b/filter.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2014 Andre Noll <maan@tuebingen.mpg.de>
+ * Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -21,14 +21,20 @@
 #include "error.h"
 #include "version.h"
 
+/** Array of error strings. */
+DEFINE_PARA_ERRLIST;
+
 /** 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. */
-INIT_FILTER_ERRLISTS;
-
 /** The task that reads from stdin. */
 static struct stdin_task stdin_task_struct;
 /** pointer to the stdin task. */
@@ -51,8 +57,8 @@ __noreturn static void print_help_and_die(void)
        bool d = conf.detailed_help_given;
 
        ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
-       print_filter_helps(d? GPH_MODULE_FLAGS_DETAILED : GPH_MODULE_FLAGS);
-       exit(0);
+       print_filter_helps(d);
+       exit(EXIT_SUCCESS);
 }
 
 static int parse_config(void)
@@ -100,13 +106,13 @@ 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;
+       struct lls_parse_result *filter_lpr;
 
        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;
@@ -117,26 +123,25 @@ int main(int argc, char *argv[])
        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];
+               const char *name;
                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_cleanup;
-               }
-               fn->filter_num = ret;
-               f = filters + fn->filter_num;
-               PARA_DEBUG_LOG("filter #%d: %s\n", i, f->name);
+               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 = f->name, .parent = parent,
+                       EMBRACE(.name = name, .parent = parent,
                        .handler = f->execute, .context = fn));
-               ti.name = f->name;
+               ti.name = name;
                ti.pre_select = f->pre_select;
                ti.post_select = f->post_select;
                ti.context = fn;
-               f->open(fn);
+               if (f->open)
+                       f->open(fn);
                fn->task = task_register(&ti, &s);
                parent = fn->btrn;
        }
@@ -149,16 +154,15 @@ int main(int argc, char *argv[])
        btr_log_tree(sit->btrn, LL_INFO);
        ret = schedule(&s);
        sched_shutdown(&s);
-out_cleanup:
        for (i--; i >= 0; i--) {
                struct filter_node *fn = fns[i];
 
-               f = filters + fn->filter_num;
+               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);
+               if (f->teardown)
+                       f->teardown(fn->lpr, fn->conf);
                free(fn);
        }
        free(fns);