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/* output.c: interface for output handlers
Copyright (C) 1999, 2000, 2001 Bernhard Herzog.
Copyright (C) 2003 Masatake YAMATO
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License
as published by the Free Software Foundation; either version 2.1 of
the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA. */
/* TODO: Unify output codes and input codes. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* Def: HAVE_CONFIG_H */
#include "autotrace.h"
#include "private.h"
#include "output.h"
#include "xstd.h"
#include "filename.h"
#include <string.h>
#include <glib.h>
typedef struct _at_output_format_entry at_output_format_entry;
struct _at_output_format_entry {
at_spline_writer writer;
const char *descr;
GDestroyNotify user_data_destroy_func;
};
static GHashTable *at_output_formats = NULL;
static at_output_format_entry *at_output_format_new(const char *descr, at_output_func writer, gpointer user_data, GDestroyNotify user_data_destroy_func);
static void at_output_format_free(at_output_format_entry * entry);
/*
* Helper functions
*/
static void output_list_set(gpointer key, gpointer value, gpointer user_data);
static void output_list_strlen(gpointer key, gpointer value, gpointer user_data);
static void output_list_strcat(gpointer key, gpointer value, gpointer user_data);
int at_output_init(void)
{
if (at_output_formats)
return 1;
at_output_formats = g_hash_table_new_full(g_str_hash, (GEqualFunc) g_str_equal, g_free, (GDestroyNotify) at_output_format_free);
if (!at_output_formats)
return 0;
return 1;
}
static at_output_format_entry *at_output_format_new(const gchar * descr, at_output_func writer, gpointer user_data, GDestroyNotify user_data_destroy_func)
{
at_output_format_entry *entry;
entry = g_malloc(sizeof(at_output_format_entry));
if (entry) {
entry->writer.func = writer;
entry->writer.data = user_data;
entry->descr = g_strdup(descr);
entry->user_data_destroy_func = user_data_destroy_func;
}
return entry;
}
static void at_output_format_free(at_output_format_entry * entry)
{
g_free((gpointer) entry->descr);
if (entry->user_data_destroy_func)
entry->user_data_destroy_func(entry->writer.data);
g_free(entry);
}
int at_output_add_handler(const gchar * suffix, const gchar * description, at_output_func writer)
{
return at_output_add_handler_full(suffix, description, writer, 0, NULL, NULL);
}
int at_output_add_handler_full(const gchar * suffix, const gchar * description, at_output_func writer, gboolean override, gpointer user_data, GDestroyNotify user_data_destroy_func)
{
gchar *gsuffix;
const gchar *gdescription;
at_output_format_entry *old_entry;
at_output_format_entry *new_entry;
g_return_val_if_fail(suffix, 0);
g_return_val_if_fail(description, 0);
g_return_val_if_fail(writer, 0);
gsuffix = g_strdup((gchar *) suffix);
g_return_val_if_fail(gsuffix, 0);
gsuffix = g_ascii_strdown(gsuffix, strlen(gsuffix));
gdescription = (const gchar *)description;
old_entry = g_hash_table_lookup(at_output_formats, gsuffix);
if (old_entry && !override) {
g_free(gsuffix);
return 1;
}
new_entry = at_output_format_new(gdescription, writer, user_data, user_data_destroy_func);
g_return_val_if_fail(new_entry, 0);
g_hash_table_replace(at_output_formats, gsuffix, new_entry);
return 1;
}
at_spline_writer *at_output_get_handler(gchar * filename)
{
char *ext = find_suffix(filename);
if (ext == NULL)
ext = "";
return at_output_get_handler_by_suffix(ext);
}
at_spline_writer *at_output_get_handler_by_suffix(const gchar * suffix)
{
at_output_format_entry *format;
gchar *gsuffix;
if (!suffix || suffix[0] == '\0')
return NULL;
gsuffix = g_strdup(suffix);
g_return_val_if_fail(gsuffix, NULL);
gsuffix = g_ascii_strdown(gsuffix, strlen(gsuffix));
format = g_hash_table_lookup(at_output_formats, gsuffix);
g_free(gsuffix);
if (format)
return &(format->writer);
else
return NULL;
}
const char **at_output_list_new(void)
{
char **list, **tmp;
gint format_count;
gint list_count;
format_count = g_hash_table_size(at_output_formats);
list_count = 2 * format_count;
list = g_new(gchar *, list_count + 1);
list[list_count] = NULL;
tmp = list;
g_hash_table_foreach(at_output_formats, output_list_set, &tmp);
return (const char **)list;
}
void at_output_list_free(const char **list)
{
free((char **)list);
}
char *at_output_shortlist(void)
{
gint length = 0, count;
char *list, *tmp;
g_hash_table_foreach(at_output_formats, output_list_strlen, &length);
count = g_hash_table_size(at_output_formats);
/* 2 for ", " */
length += (2 * count);
list = g_malloc(length + 1);
list[0] = '\0';
tmp = list;
g_hash_table_foreach(at_output_formats, output_list_strcat, &tmp);
/* remove final ", " */
g_return_val_if_fail(list[length - 2] == ',', NULL);
list[length - 2] = '\0';
return list;
}
static void output_list_set(gpointer key, gpointer value, gpointer user_data)
{
at_output_format_entry *format = value;
const char ***list_ptr = user_data;
const char **list = *list_ptr;
list[0] = key;
list[1] = format->descr;
*list_ptr = &(list[2]);
}
static void output_list_strlen(gpointer key, gpointer value, gpointer user_data)
{
gint *length;
g_return_if_fail(key);
g_return_if_fail(user_data);
length = user_data;
*length += strlen(key);
}
static void output_list_strcat(gpointer key, gpointer value, gpointer user_data)
{
gchar **list_ptr;
gchar *list;
list_ptr = user_data;
list = *list_ptr;
strcat(list, key);
strcat(list, ", ");
/* 2 for ", " */
*list_ptr = list + strlen(key) + 2;
}
void at_spline_list_foreach(at_spline_list_type * list, AtSplineListForeachFunc func, gpointer user_data)
{
unsigned i;
for (i = 0; i < AT_SPLINE_LIST_LENGTH(list); i++) {
func(list, AT_SPLINE_LIST_ELT(list, i), i, user_data);
}
}
void at_spline_list_array_foreach(at_spline_list_array_type * list_array, AtSplineListArrayForeachFunc func, gpointer user_data)
{
unsigned i;
for (i = 0; i < AT_SPLINE_LIST_ARRAY_LENGTH(list_array); i++) {
func(list_array, AT_SPLINE_LIST_ARRAY_ELT(list_array, i), i, user_data);
}
}
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