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[paraslash.git] / mood.c

diff --git a/mood.c b/mood.c
index cdc0745a255f994eb1a37c661cbfa1dfe1952221..9f1d7745a3589565045b919af94ad02b3f73602d 100644 (file)
--- a/mood.c
+++ b/mood.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007-2008 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2007-2009 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -248,14 +248,14 @@ static int mm_is_set_score_function(__a_unused const char *path,
        return -100;
 }
 
-/* returns 1 if row matches score item, negative otherwise */
-static int add_item_score(const struct osl_row *row, struct mood_item *item, long *score,
-               long *score_arg_sum)
+/* returns 1 if row matches score item, 0 if not, negative on errors */
+static int get_item_score(const struct osl_row *row, struct mood_item *item,
+               long *score, long *score_arg_sum)
 {
        struct afs_info afsi;
        struct afh_info afhi;
        char *path;
-       int ret;
+       int ret, match = 1;
 
        *score_arg_sum += item->random_score? 100 : PARA_ABS(item->score_arg);
        ret = 100;
@@ -273,36 +273,55 @@ static int add_item_score(const struct osl_row *row, struct mood_item *item, lon
                ret = item->method->score_function(path, &afsi, &afhi,
                        item->parser_data);
                if ((ret < 0 && !item->logical_not) || (ret >= 0 && item->logical_not))
-                       return -1; /* no match */
+                       match = 0; /* no match */
        }
        if (item->random_score)
-               *score += PARA_ABS(ret) * para_random(100);
+               *score = PARA_ABS(ret) * para_random(100);
        else
-               *score += PARA_ABS(ret) * item->score_arg;
-       return 1;
+               *score = PARA_ABS(ret) * item->score_arg;
+       return match;
 }
 
+/* returns 1 if row admissible, 0 if not, negative on errors */
 static int compute_mood_score(const struct osl_row *aft_row, struct mood *m,
                long *result)
 {
        struct mood_item *item;
-       int match = 0;
-       long score_arg_sum = 0, score = 0;
+       int ret, match = 0;
+       long score_arg_sum = 0, score = 0, item_score;
 
        if (!m)
                return -E_NO_MOOD;
        /* reject audio file if it matches any entry in the deny list */
-       list_for_each_entry(item, &m->deny_list, mood_item_node)
-               if (add_item_score(aft_row, item, &score, &score_arg_sum) > 0)
-                       return -E_NOT_ADMISSIBLE;
-       list_for_each_entry(item, &m->accept_list, mood_item_node)
-               if (add_item_score(aft_row, item, &score, &score_arg_sum) > 0)
-                       match = 1;
+       list_for_each_entry(item, &m->deny_list, mood_item_node) {
+               ret = get_item_score(aft_row, item, &item_score,
+                       &score_arg_sum);
+               if (ret < 0)
+                       return ret;
+               if (ret > 0) /* not admissible */
+                       return 0;
+               score += item_score;
+       }
+       list_for_each_entry(item, &m->accept_list, mood_item_node) {
+               ret = get_item_score(aft_row, item, &item_score,
+                       &score_arg_sum);
+               if (ret < 0)
+                       return ret;
+               if (ret == 0)
+                       continue;
+               match = 1;
+               score += item_score;
+       }
        /* reject if there is no matching entry in the accept list */
        if (!match && !list_empty(&m->accept_list))
-               return -E_NOT_ADMISSIBLE;
-       list_for_each_entry(item, &m->score_list, mood_item_node)
-               add_item_score(aft_row, item, &score, &score_arg_sum);
+               return 0;
+       list_for_each_entry(item, &m->score_list, mood_item_node) {
+               ret = get_item_score(aft_row, item, &item_score,
+                       &score_arg_sum);
+               if (ret < 0)
+                       return ret;
+               score += item_score;
+       }
        if (score_arg_sum)
                score /= score_arg_sum;
        *result = score;
@@ -537,10 +556,10 @@ static int check_mood(struct osl_row *mood_row, void *data)
        struct osl_object mood_def;
        struct mood_line_parser_data mlpd = {.line_num = 0};
 
-       int ret2, ret = mood_get_name_and_def_by_row(mood_row, &mood_name, &mood_def);
+       int ret = mood_get_name_and_def_by_row(mood_row, &mood_name, &mood_def);
 
        if (ret < 0) {
-               ret2 = para_printf(pb, "failed to get mood definition: %s\n",
+               para_printf(pb, "failed to get mood definition: %s\n",
                        para_strerror(-ret));
                return ret;
        }
@@ -552,7 +571,7 @@ static int check_mood(struct osl_row *mood_row, void *data)
        ret = for_each_line_ro(mood_def.data, mood_def.size,
                parse_mood_line, &mlpd);
        if (ret < 0)
-               ret2 = para_printf(pb, "%s line %u: %s\n", mood_name, mlpd.line_num,
+               para_printf(pb, "%s line %u: %s\n", mood_name, mlpd.line_num,
                        para_strerror(-ret));
 out:
        osl_close_disk_object(&mood_def);
@@ -730,7 +749,7 @@ struct admissible_array {
  * \param aft_row The audio file to be added.
  * \param private_data Pointer to a struct admissible_file_info.
  *
- * \return Negative on errors, positive on success.
+ * \return 1 if row admissible, 0 if not, negative on errors.
  */
 static int add_if_admissible(struct osl_row *aft_row, void *data)
 {
@@ -739,8 +758,8 @@ static int add_if_admissible(struct osl_row *aft_row, void *data)
        long score = 0;
 
        ret = compute_mood_score(aft_row, aa->m, &score);
-       if (ret < 0)
-               return (ret == -E_NOT_ADMISSIBLE)? 1 : ret;
+       if (ret <= 0)
+               return ret;
        if (statistics.num >= aa->size) {
                aa->size *= 2;
                aa->size += 100;
@@ -878,6 +897,8 @@ static int mood_update_audio_file(const struct osl_row *aft_row,
                return ret;
        was_admissible = ret;
        ret = compute_mood_score(aft_row, current_mood, &score);
+       if (ret < 0)
+               return ret;
        is_admissible = (ret > 0);
        if (!was_admissible && !is_admissible)
                return 1;
@@ -1038,7 +1059,9 @@ int reload_current_mood(void)
 int moods_event_handler(enum afs_events event, __a_unused struct para_buffer *pb,
                void *data)
 {
-       switch(event) {
+       if (!current_mood)
+               return 0;
+       switch (event) {
        /*
         * The three blob events might change the set of admissible files,
         * so we must reload the score list.