/*
- * 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 <time.h>
+#include <regex.h>
#include <fnmatch.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"
/**
* Contains statistical data of the currently admissible audio files.
* \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);
+ const struct afh_info *afhi, const void *data);
/**
* Pre-process a mood line.
* 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.
+ * store a pointer to its structure via the void** pointer.
*
* \sa mood_open(), mood_cleanup_function, mood_score_function.
*/
-typedef int mood_parser(const char *, void **);
+typedef int mood_parser(int, char **, void **);
/**
* Deallocate resources which were allocated by the mood_parser.
* Used for scoring and to determine whether a file is admissible.
*/
struct mood_method {
- /* The name of the method. */
+ /** The name of the method. */
const char *name;
/** Pointer to the mood parser. */
mood_parser *parser;
return res;
}
-static int mm_no_attributes_set_parser(const char *arg, __a_unused void **ignored)
+#define MOOD_COMPARATORS \
+ MC(LESS, <) \
+ MC(LESS_OR_EQUAL, <=) \
+ MC(EQUAL, =) \
+ MC(EQUAL2, ==) \
+ MC(NOT_EQUAL, !=) \
+ MC(NOT_EQUAL2, <>) \
+ MC(GREATER, >) \
+ MC(GREATER_OR_EQUAL, >=) \
+
+#define MC(a, b) MC_ ## a,
+enum mood_comparator_id {MOOD_COMPARATORS NUM_MOOD_COMPARATORS};
+#undef MC
+#define MC(a, b) # b,
+const char const *mood_comparators[] = {MOOD_COMPARATORS};
+#undef MC
+
+static int parse_mood_comparator(const char *word)
+{
+ int i;
+
+ for (i = 0; i < NUM_MOOD_COMPARATORS; i++)
+ if (!strcmp(word, mood_comparators[i]))
+ return i;
+ return -E_MOOD_SYNTAX;
+}
+
+static int compare_int32(int32_t a, int32_t b, enum mood_comparator_id id)
+{
+ int res;
+
+ switch (id) {
+ case MC_LESS:
+ res = a < b; break;
+ case MC_LESS_OR_EQUAL:
+ res = a <= b; break;
+ case MC_EQUAL:
+ case MC_EQUAL2:
+ res = a == b; break;
+ case MC_NOT_EQUAL:
+ case MC_NOT_EQUAL2:
+ res = a != b; break;
+ case MC_GREATER:
+ res = a > b; break;
+ case MC_GREATER_OR_EQUAL:
+ res = a >= b; break;
+ default:
+ PARA_EMERG_LOG("BUG: invalid mood comparator\n");
+ exit(EXIT_FAILURE);
+ }
+ return res? 100 : -100;
+}
+
+struct mm_year_data {
+ /** The year given at the mood line. */
+ int32_t year;
+ /** Used to detect Y2K issues. */
+ int32_t current_year;
+ /** <, <=, =, !=, >=, or >. */
+ enum mood_comparator_id id;
+};
+
+static int mm_year_parser(int argc, char **argv, void **private)
{
- if (arg && *arg)
- PARA_WARNING_LOG("ignored junk at eol: %s\n", arg);
+ int ret = -E_MOOD_SYNTAX;
+ struct mm_year_data *mmyd = para_malloc(sizeof(*mmyd));
+ time_t current_time;
+ struct tm *gmt;
+
+ if (argc != 2)
+ goto err;
+ ret = parse_mood_comparator(argv[1]);
+ mmyd->id = ret;
+ if (ret < 0)
+ goto err;
+ ret = para_atoi32(argv[2], &mmyd->year);
+ if (ret < 0)
+ goto err;
+ current_time = time(NULL);
+ gmt = gmtime(¤t_time);
+ /* tm_year is the number of years since 1900 */
+ mmyd->current_year = gmt->tm_year + 1900;
+ *private = mmyd;
return 1;
+err:
+ free(mmyd);
+ return ret;
+}
+
+static int mm_year_score_function(__a_unused const char *path,
+ __a_unused const struct afs_info *afsi,
+ const struct afh_info *afhi,
+ const void *private)
+{
+ const struct mm_year_data *mmyd = private;
+ int32_t tag_year;
+ int ret = para_atoi32(afhi->tags.year, &tag_year);
+
+ if (ret < 0) /* year tag not present or not a number */
+ return -100;
+ if (tag_year < 0)
+ return -100;
+ /* try to work around Y2K issues */
+ if (tag_year < 100) {
+ tag_year += 1900;
+ if (tag_year + 100 <= mmyd->current_year)
+ tag_year += 100; /* assume tag_year >= 2000 */
+ }
+ return compare_int32(tag_year, mmyd->year, mmyd->id);
+}
+
+static void mm_year_cleanup(void *private)
+{
+ free(private);
+}
+
+static int mm_no_attributes_set_parser(int argc, __a_unused char **argv,
+ __a_unused void **ignored)
+{
+ return argc? -E_MOOD_SYNTAX : 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 struct afh_info *afhi,
__a_unused const void *data)
{
if (!afsi->attributes)
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 struct afh_info *afhi,
__a_unused const void *data)
{
unsigned num;
return -100;
}
-static int mm_played_rarely_parser(const char *arg, __a_unused void **ignored)
+static int mm_played_rarely_parser(int argc, __a_unused char **argv,
+ __a_unused void **ignored)
{
- if (arg && *arg)
- PARA_WARNING_LOG("ignored junk at eol: %s\n", arg);
- return 1;
+ return argc? -E_MOOD_SYNTAX : 1;
}
-static int mm_name_like_score_function(const char *path,
+static int mm_path_matches_score_function(const char *path,
__a_unused const struct afs_info *afsi,
- __a_unused const struct audio_format_info *afhi,
+ __a_unused const struct afh_info *afhi,
const void *data)
{
if (fnmatch(data, path, 0))
return 100;
}
-static int mm_name_like_parser(const char *arg, void **data)
+static int mm_path_matches_parser(int argc, char **argv, void **data)
{
- *data = para_strdup(arg);
+ if (argc != 1)
+ return -E_MOOD_SYNTAX;
+ *data = para_strdup(argv[1]);
return 1;
}
-static void mm_name_like_cleanup(void *data)
+static void mm_path_matches_cleanup(void *data)
{
free(data);
}
-static int mm_is_set_parser(const char *arg, void **bitnum)
+static int mm_is_set_parser(int argc, char **argv, void **bitnum)
{
- unsigned char *c = para_malloc(1);
- int ret = get_attribute_bitnum_by_name(arg, c);
+ int ret;
+ unsigned char c, *res;
- if (ret >= 0)
- *bitnum = c;
- else
- free(c);
- return ret;
+ if (argc != 1)
+ return -E_MOOD_SYNTAX;
+ ret = get_attribute_bitnum_by_name(argv[1], &c);
+ if (ret < 0)
+ return ret;
+ res = para_malloc(1);
+ *res = c;
+ *bitnum = res;
+ return 1;
}
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,
+ __a_unused const struct afh_info *afhi,
const void *data)
{
const unsigned char *bn = data;
long *score_arg_sum)
{
struct afs_info afsi;
- struct audio_format_info afhi;
+ struct afh_info afhi;
char *path;
int ret;
{DEFINE_MOOD_METHOD(no_attributes_set)},
{DEFINE_MOOD_METHOD(played_rarely)},
{DEFINE_MOOD_METHOD(is_set)},
- {DEFINE_MOOD_METHOD_WITH_CLEANUP(name_like)},
+ {DEFINE_MOOD_METHOD_WITH_CLEANUP(path_matches)},
+ {DEFINE_MOOD_METHOD_WITH_CLEANUP(year)},
{.parser = NULL}
};
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;
}
-/*
- * Calls load_mood() and reverts its error value: It returns -E_MOOD_LOADED
- * on _success_, and 1 on errors. This way the loop over all moods stops at the
- * first valid mood.
- */
-static int load_mood_loop_func(struct osl_row *mood_row, void *data)
-{
- struct mood **m = data;
- int ret = load_mood(mood_row, m);
- if (ret < 0) {
- if (ret != -E_DUMMY_ROW)
- PARA_NOTICE_LOG("invalid mood (%d), trying next mood\n", ret);
- return 1;
- }
- return -E_MOOD_LOADED;
-}
-
-static int load_first_available_mood(struct mood **m)
-{
- int ret = osl_rbtree_loop(moods_table, BLOBCOL_NAME, m,
- load_mood_loop_func);
- if (ret == -E_MOOD_LOADED) /* success */
- return 1;
- if (ret < 0)
- return ret; /* error */
- PARA_NOTICE_LOG("no valid mood found\n");
- return -E_NO_MOOD;
-}
-
static int check_mood(struct osl_row *mood_row, void *data)
{
struct para_buffer *pb = data;
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
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));
}
+/**
+ * Close the current mood.
+ *
+ * Free all resources of the current mood which were allocated during
+ * mood_open().
+ */
+void close_current_mood(void)
+{
+ destroy_mood(current_mood);
+ current_mood = NULL;
+ memset(&statistics, 0, sizeof(statistics));
+}
+
+
/**
* Change the current mood.
*
* \param mood_name The name of the mood to open.
*
- * There are two special cases: If \a mood_name is \a NULL, load the
- * first available mood. If \a mood_name is the empty string "", load
- * the dummy mood that accepts every audio file and uses a scoring method
- * based only on the \a last_played information.
+ * If \a mood_name is \a NULL, load the dummy mood that accepts every audio file
+ * and uses a scoring method based only on the \a last_played information.
*
* If there is already an open mood, it will be closed first.
*
.array = NULL
};
- if (!mood_name) {
- struct mood *m;
- ret = load_first_available_mood(&m);
- if (ret < 0)
- return ret;
- destroy_mood(current_mood);
- current_mood = m;
- } else if (*mood_name) {
+ if (mood_name) {
struct mood *m;
struct osl_row *row;
struct osl_object obj = {
.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;
ret = load_mood(row, &m);
if (ret < 0)
return ret;
- destroy_mood(current_mood);
+ close_current_mood();
current_mood = m;
} else {
- destroy_mood(current_mood);
+ close_current_mood();
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");
- ret = 1;
+ PARA_NOTICE_LOG("loaded mood %s\n", current_mood->name);
+ ret = statistics.num;
out:
free(aa.array);
return ret;
}
-
-/**
- * Close the current mood.
- *
- * Free all resources of the current mood which were allocated during
- * mood_open().
- */
-static void close_current_mood(void)
-{
- destroy_mood(current_mood);
- current_mood = NULL;
- memset(&statistics, 0, sizeof(statistics));
-}
-
/**
* Close and re-open the current mood.
*
int reload_current_mood(void)
{
int ret;
- char *mood_name;
+ char *mood_name = NULL;
- PARA_NOTICE_LOG("reloading current mood\n");
if (!current_mood)
return 1;
- mood_name = para_strdup(current_mood->name);
+ 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();
- ret = clear_score_table();
- if (ret < 0)
- return ret;
ret = change_current_mood(mood_name);
free(mood_name);
return ret;
}
-int moods_event_handler(enum afs_events event, struct para_buffer *pb,
+int moods_event_handler(enum afs_events event, __a_unused struct para_buffer *pb,
void *data)
{
switch(event) {
default:
return 1;
}
- return 1;
}