/*
- * Copyright (C) 2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2007-2009 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file mood.c Paraslash's mood handling functions. */
-#include <fnmatch.h>
+#include <regex.h>
+#include <osl.h>
+
#include "para.h"
#include "error.h"
#include "string.h"
#include "afh.h"
#include "afs.h"
#include "list.h"
+#include "ipc.h"
+#include "mm.h"
/**
* Contains statistical data of the currently admissible audio files.
/** Number of admissible files */
unsigned num;
};
-struct afs_statistics statistics;
-
-/**
- * Assign scores according to a mood_method.
- *
- * Each mood_method has its own mood_score_function. The first three parameters
- * passed to that function are informations about the audio file whose score is
- * to be computed. The data argument depends on the mood method this function
- * is used for. It usually is the argument given at the end of a mood line.
- *
- * Mood score functions must return values between -100 and +100 inclusively.
- * Boolean score functions should always return either -100 or +100.
- *
- * \sa struct mood_method, mood_parser.
- */
-typedef int mood_score_function(const char *path, const struct afs_info *afsi,
- const struct audio_format_info *afhi, const void *data);
-
-/**
- * Pre-process a mood line.
- *
- * The mood_parser of a mood_method is called once at mood open time for each
- * line of the current mood definition that contains the mood_method's name as
- * a keyword. The line is passed to the mood_parser as the first argument. The
- * mood_parser must determine whether the line is syntactically correct and
- * return a positive value if so and a negative value otherwise.
- *
- * Some mood parsers pre-process the data given in the mood line to compute a
- * structure which depends of the particular mood_method and which is used
- * later in the mood_score_function of the mood_method. The mood_parser may
- * store a pointer to its structure via the second argument.
- *
- * \sa mood_open(), mood_cleanup_function, mood_score_function.
- */
-typedef int mood_parser(const char *, void **);
-
-/**
- * Deallocate resources which were allocated by the mood_parser.
- *
- * This optional function of a mood_method is used to free any resources
- * allocated in mood_open() by the mood_parser. The argument passed is a
- * pointer to the mood_method specific data structure that was returned by the
- * mood_parser.
- *
- * \sa mood_parser.
- */
-typedef void mood_cleanup_function(void *);
-
-/**
- * Used for scoring and to determine whether a file is admissible.
- */
-struct mood_method {
- /* The name of the method. */
- const char *name;
- /** Pointer to the mood parser. */
- mood_parser *parser;
- /** Pointer to the score function */
- mood_score_function *score_function;
- /** Optional cleanup function. */
- mood_cleanup_function *cleanup;
-};
+static struct afs_statistics statistics;
/**
* Each line of the current mood corresponds to a mood_item.
return res;
}
-static int mm_no_attributes_set_parser(const char *arg, __a_unused void **ignored)
-{
- if (arg && *arg)
- PARA_WARNING_LOG("ignored junk at eol: %s\n", arg);
- return 1;
-}
-
-static int mm_no_attributes_set_score_function(__a_unused const char *path,
- const struct afs_info *afsi,
- __a_unused const struct audio_format_info *afhi,
- __a_unused const void *data)
-{
- if (!afsi->attributes)
- return 100;
- return -100;
-}
-
-static int mm_played_rarely_score_function(__a_unused const char *path,
- const struct afs_info *afsi,
- __a_unused const struct audio_format_info *afhi,
- __a_unused const void *data)
-{
- unsigned num;
- int ret = get_num_admissible_files(&num);
-
- if (ret < 0)
- return 0;
- if (statistics.num_played_sum - num * afsi->num_played
- > int_sqrt(statistics.num_played_qd * num))
- return 100;
- return -100;
-}
-
-static int mm_played_rarely_parser(const char *arg, __a_unused void **ignored)
-{
- if (arg && *arg)
- PARA_WARNING_LOG("ignored junk at eol: %s\n", arg);
- return 1;
-}
-
-static int mm_name_like_score_function(const char *path,
- __a_unused const struct afs_info *afsi,
- __a_unused const struct audio_format_info *afhi,
- const void *data)
-{
- if (fnmatch(data, path, 0))
- return -100;
- return 100;
-}
-
-static int mm_name_like_parser(const char *arg, void **data)
-{
- *data = para_strdup(arg);
- return 1;
-}
-
-static void mm_name_like_cleanup(void *data)
-{
- free(data);
-}
-
-static int mm_is_set_parser(const char *arg, void **bitnum)
-{
- unsigned char *c = para_malloc(1);
- int ret = get_attribute_bitnum_by_name(arg, c);
-
- if (ret >= 0)
- *bitnum = c;
- else
- free(c);
- return ret;
-}
-
-static int mm_is_set_score_function(__a_unused const char *path,
- __a_unused const struct afs_info *afsi,
- __a_unused const struct audio_format_info *afhi,
- const void *data)
-{
- const unsigned char *bn = data;
- if (afsi->attributes & (1ULL << *bn))
- return 100;
- 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,
+/* returns 1 if row matches score item, 0 if not. */
+static int get_item_score(struct mood_item *item, const struct afs_info *afsi,
+ const struct afh_info *afhi, const char *path, long *score,
long *score_arg_sum)
{
- struct afs_info afsi;
- struct audio_format_info afhi;
- char *path;
- int ret;
+ int ret, match = 1;
*score_arg_sum += item->random_score? 100 : PARA_ABS(item->score_arg);
ret = 100;
if (item->method) {
- ret = get_afsi_of_row(row, &afsi);
- if (ret< 0)
- return ret;
- ret = get_afhi_of_row(row, &afhi);
- if (ret< 0)
- return ret;
- ret = get_audio_file_path_of_row(row, &path);
- if (ret< 0)
- return ret;
- ret = item->method->score_function(path, &afsi, &afhi,
+ 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;
+ struct afs_info afsi;
+ struct afh_info afhi;
+ char *path;
if (!m)
return -E_NO_MOOD;
+ ret = get_afsi_of_row(aft_row, &afsi);
+ if (ret< 0)
+ return ret;
+ ret = get_afhi_of_row(aft_row, &afhi);
+ if (ret< 0)
+ return ret;
+ ret = get_audio_file_path_of_row(aft_row, &path);
+ if (ret< 0)
+ return ret;
/* 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(item, &afsi, &afhi, path, &item_score,
+ &score_arg_sum);
+ 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(item, &afsi, &afhi, path, &item_score,
+ &score_arg_sum);
+ 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(item, &afsi, &afhi, path, &item_score,
+ &score_arg_sum);
+ score += item_score;
+ }
if (score_arg_sum)
score /= score_arg_sum;
*result = score;
return 1;
}
-#define DEFINE_MOOD_METHOD(_name) \
-.parser = mm_ ## _name ## _parser, \
-.score_function = mm_ ## _name ## _score_function, \
-.name = #_name
-
-#define DEFINE_MOOD_METHOD_WITH_CLEANUP(_name) \
- DEFINE_MOOD_METHOD(_name), \
- .cleanup = mm_ ## _name ## _cleanup
-
-static const struct mood_method mood_methods[] = {
- {DEFINE_MOOD_METHOD(no_attributes_set)},
- {DEFINE_MOOD_METHOD(played_rarely)},
- {DEFINE_MOOD_METHOD(is_set)},
- {DEFINE_MOOD_METHOD_WITH_CLEANUP(name_like)},
- {.parser = NULL}
-};
-
static void cleanup_list_entry(struct mood_item *item)
{
if (item->method && item->method->cleanup)
ML_SCORE
};
+/** Data passed to the parser of a mood line. */
struct mood_line_parser_data {
+ /** The mood this mood line belongs to. */
struct mood *m;
+ /** The line number in the mood definition. */
unsigned line_num;
};
{
struct mood_line_parser_data *mlpd = data;
char **argv;
- char *delim = " \t";
unsigned num_words;
char **w;
int i, ret;
enum mood_line_type mlt = ML_INVALID;
struct mood_item *mi = NULL;
- char *buf = para_strdup(mood_line);
mlpd->line_num++;
- num_words = split_args(buf, &argv, delim);
- ret = 1;
+ ret = create_argv(mood_line, " \t", &argv);
+ if (ret < 0)
+ return ret;
+ num_words = ret;
if (!num_words) /* empty line */
goto out;
w = argv;
w++;
if (!*w)
goto out;
- if (!strcmp(*w, "with")) {
- w++;
- if (!*w)
- goto out;
- }
+ if (strcmp(*w, "with"))
+ goto check_for_if;
+ w++;
+ if (!*w)
+ goto out;
+ if (strcmp(*w, "score"))
+ goto out;
}
if (mlt == ML_SCORE || !strcmp(*w, "score")) {
ret = -E_MOOD_SYNTAX;
w++;
if (!*w)
goto out;
+check_for_if:
if (!strcmp(*w, "if")) {
ret = -E_MOOD_SYNTAX;
w++;
ret = -E_MOOD_SYNTAX;
if (!mood_methods[i].parser)
goto out;
- w++;
- ret = mood_methods[i].parser(*w, &mi->parser_data);
+ ret = mood_methods[i].parser(num_words - 1 - (w - argv), w,
+ &mi->parser_data);
if (ret < 0)
goto out;
mi->method = &mood_methods[i];
(mlt == ML_DENY? "deny" : "score"), mi->method);
ret = 1;
out:
- free(argv);
- free(buf);
+ free_argv(argv);
if (ret >= 0)
return ret;
if (mi) {
osl_close_disk_object(&mood_def);
if (ret < 0) {
PARA_ERROR_LOG("unable to load mood %s: %s\n", mlpd.m->name,
- PARA_STRERROR(-ret));
+ para_strerror(-ret));
destroy_mood(mlpd.m);
return ret;
}
- PARA_INFO_LOG("loaded mood %s\n", mlpd.m->name);
*m = mlpd.m;
return 1;
}
int ret = mood_get_name_and_def_by_row(mood_row, &mood_name, &mood_def);
if (ret < 0) {
- para_printf(pb, "failed to get mood definition\n");
+ para_printf(pb, "failed to get mood definition: %s\n",
+ para_strerror(-ret));
return ret;
}
if (!*mood_name) /* ignore dummy row */
goto out;
- para_printf(pb, "checking mood %s...\n", mood_name);
+ ret = para_printf(pb, "checking mood %s...\n", mood_name);
+ if (ret < 0)
+ goto out;
ret = for_each_line_ro(mood_def.data, mood_def.size,
parse_mood_line, &mlpd);
if (ret < 0)
para_printf(pb, "%s line %u: %s\n", mood_name, mlpd.line_num,
- PARA_STRERROR(-ret));
+ para_strerror(-ret));
out:
osl_close_disk_object(&mood_def);
- return 1;
+ return ret;
}
/**
* Check all moods for syntax errors.
*
+ * \param fd The afs socket.
* \param query Unused.
- * \param result: Contains check messages.
*/
-int mood_check_callback(__a_unused const struct osl_object *query,
- struct osl_object *result)
+void mood_check_callback(int fd, __a_unused const struct osl_object *query)
{
- struct para_buffer pb = {.buf = NULL};
+ struct para_buffer pb = {
+ .max_size = SHMMAX,
+ .private_data = &fd,
+ .max_size_handler = pass_buffer_as_shm
+ };
- para_printf(&pb, "checking moods...\n");
+ int ret = para_printf(&pb, "checking moods...\n");
+ if (ret < 0)
+ return;
osl_rbtree_loop(moods_table, BLOBCOL_ID, &pb,
check_mood);
- result->data = pb.buf;
- result->size = pb.size;
- return 1;
+ if (pb.offset)
+ pass_buffer_as_shm(pb.buf, pb.offset, &fd);
+ free(pb.buf);
}
#if 0
* \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)
{
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;
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;
PARA_NOTICE_LOG("no admissible files\n");
return;
}
- PARA_NOTICE_LOG("last_played mean: %lli, last_played sigma: %llu\n",
+ PARA_INFO_LOG("last_played mean: %lli, last_played sigma: %llu\n",
(long long int)(statistics.last_played_sum / n),
(long long unsigned)int_sqrt(statistics.last_played_qd / n));
- PARA_NOTICE_LOG("num_played mean: %lli, num_played sigma: %llu\n",
+ PARA_INFO_LOG("num_played mean: %lli, num_played sigma: %llu\n",
(long long int)statistics.num_played_sum / n,
(long long unsigned)int_sqrt(statistics.num_played_qd / n));
}
memset(&statistics, 0, sizeof(statistics));
}
-
/**
* Change the current mood.
*
.data = mood_name,
.size = strlen(mood_name) + 1
};
- ret = osl_get_row(moods_table, BLOBCOL_NAME, &obj, &row);
+ ret = osl(osl_get_row(moods_table, BLOBCOL_NAME, &obj, &row));
if (ret < 0) {
PARA_NOTICE_LOG("no such mood: %s\n", mood_name);
return ret;
current_mood = alloc_new_mood("dummy");
}
aa.m = current_mood;
- PARA_NOTICE_LOG("loaded mood %s\n", current_mood->name);
- PARA_INFO_LOG("%s\n", "computing statistics of admissible files");
+ PARA_NOTICE_LOG("computing statistics of admissible files\n");
ret = audio_file_loop(&aa, add_if_admissible);
if (ret < 0)
return ret;
log_statistics();
- PARA_NOTICE_LOG("%d admissible files \n", statistics.num);
+ PARA_INFO_LOG("%d admissible files \n", statistics.num);
for (i = 0; i < statistics.num; i++) {
struct admissible_file_info *a = aa.array + i;
ret = add_to_score_table(a->aft_row, a->score);
if (ret < 0)
goto out;
}
- PARA_NOTICE_LOG("score add complete\n");
+ PARA_NOTICE_LOG("loaded mood %s\n", current_mood->name);
ret = statistics.num;
out:
free(aa.array);
int ret;
char *mood_name = NULL;
- PARA_NOTICE_LOG("reloading current mood\n");
if (!current_mood)
return 1;
+ PARA_NOTICE_LOG("reloading %s\n", current_mood->name?
+ current_mood->name : "(dummy)");
if (current_mood->name)
mood_name = para_strdup(current_mood->name);
close_current_mood();
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.
default:
return 1;
}
- return 1;
}
projects / paraslash.git / blobdiff