/**
* \brief Finds the data of a config file by a path relative to the data directory root.
* \param self Paths.
* \param path Path relative to the data directory root.
* \param config Nonzero for a config file, zero for a data file.
* \return Absolute path or NULL.
*/
char* lipth_paths_find_path (
const LIPthPaths* self,
const char* path,
int config)
{
char* path1;
/* Try the config/save path. */
if (config)
path1 = lisys_path_concat (self->module_config, path, NULL);
else
path1 = lisys_path_concat (self->module_data_save, path, NULL);
if (path1 == NULL)
return NULL;
if (lisys_filesystem_access (path1, LISYS_ACCESS_READ))
return path1;
lisys_free (path1);
/* Try the data path. */
path1 = lisys_path_concat (self->module_data, path, NULL);
if (lisys_filesystem_access (path1, LISYS_ACCESS_READ))
return path1;
lisys_free (path1);
return NULL;
}
/**
* \brief Gets the path to an SQL database.
*
* Calling this function will create the save directory if it doesn't exist
* yet. If the creation fails or the function runs out of memory, NULL is
* returned and the error message is set.
*
* \param self Paths object.
* \param name File name.
* \return Newly allocated absolute path or NULL.
*/
char* lipth_paths_get_sql (
const LIPthPaths* self,
const char* name)
{
char* path;
/* Format the path. */
path = lisys_path_concat (self->module_state, name, NULL);
if (path == NULL)
return NULL;
/* Check if the save directory exists. */
if (lisys_filesystem_access (self->module_state, LISYS_ACCESS_EXISTS))
{
if (!lisys_filesystem_access (self->module_state, LISYS_ACCESS_WRITE))
{
lisys_error_set (EINVAL, "save path `%s' is not writable", path);
lisys_free (path);
return NULL;
}
return path;
}
/* Create the save directory. */
if (!lisys_filesystem_makepath (self->module_state))
{
lisys_free (path);
return NULL;
}
return path;
}
/**
* \brief Gets the global data directory.
*
* Follows the XDG Base Directory Specification:
* http://www.freedesktop.org/Standards/basedir-spec
*
* \param path Relative path being searched for.
* \return New string or NULL.
*/
char* lisys_paths_get_data_global (
const char* path)
{
#ifdef __WIN32__
return NULL;
#else
int last;
char* dup;
char* ptr;
char* ret;
char* start;
const char* dirs;
/* Get the list of global data directories. */
dirs = getenv ("XDG_DATA_DIRS");
if (dirs == NULL || dirs[0] == '\0')
return NULL;
dup = lisys_string_dup (dirs);
if (dup == NULL)
return NULL;
/* Loop through all directories. */
ptr = start = dup;
ret = NULL;
last = 0;
while (1)
{
/* Search for the delimiter. */
last = (*ptr == '\0');
if (*ptr != ':' && !last)
{
ptr++;
continue;
}
*ptr = '\0';
/* Test if the path is valid. */
ret = lisys_path_concat (start, path, NULL);
if (ret != NULL)
{
if (lisys_filesystem_access (ret, LISYS_ACCESS_READ))
break;
lisys_free (ret);
ret = NULL;
}
/* Check if more candidates exist. */
if (last)
break;
ptr++;
start = ptr;
}
/* Return the result or NULL. */
lisys_free (dup);
return ret;
#endif
}
static int private_create_save_path (
LIPthPaths* self,
const char* path)
{
/* Check if the save directory exists. */
if (lisys_filesystem_access (path, LISYS_ACCESS_EXISTS))
{
if (!lisys_filesystem_access (path, LISYS_ACCESS_WRITE))
{
lisys_error_set (EINVAL, "save path `%s' is not writable", path);
return 0;
}
return 1;
}
/* Create the save directory. */
if (!lisys_filesystem_makepath (path))
return 0;
return 1;
}
/**
* \brief Gets the path to a sound file.
*
* \param self Paths object.
* \param name File name.
* \return Full path or NULL.
*/
char* lipth_paths_get_sound (
const LIPthPaths* self,
const char* name)
{
char* path;
/* Try the override path. */
path = lisys_path_concat (self->override_data, "sounds", name, NULL);
if (path == NULL)
return NULL;
if (lisys_filesystem_access (path, LISYS_ACCESS_READ))
return path;
lisys_free (path);
/* Try the real path. */
return lisys_path_concat (self->module_data, "sounds", name, NULL);
}