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art-search.cc
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art-search.cc
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/*
* art-search.c
* Copyright 2006-2013 Michael Hanselmann, Yoshiki Yazawa, and John Lindgren
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions, and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions, and the following disclaimer in the documentation
* provided with the distribution.
*
* This software is provided "as is" and without any warranty, express or
* implied. In no event shall the authors be liable for any damages arising from
* the use of this software.
*/
#include "internal.h"
#include <string.h>
#include <glib.h> /* for g_dir_open, g_file_test */
#include "audstrings.h"
#include "index.h"
#include "runtime.h"
struct SearchParams
{
String filename;
Index<String> include, exclude;
};
static bool has_front_cover_extension(const char * name)
{
const char * ext = strrchr(name, '.');
if (!ext)
return false;
return !strcmp_nocase(ext, ".jpg") || !strcmp_nocase(ext, ".jpeg") ||
!strcmp_nocase(ext, ".png") || !strcmp_nocase(ext, ".webp");
}
static bool cover_name_filter(const char * name, const Index<String> & keywords,
bool ret_on_empty)
{
if (!keywords.len())
return ret_on_empty;
for (const String & keyword : keywords)
{
if (strstr_nocase(name, keyword))
return true;
}
return false;
}
static String fileinfo_recursive_get_image(const char * path,
const SearchParams * params,
int depth)
{
GDir * d = g_dir_open(path, 0, nullptr);
if (!d)
return String();
const char * name;
if (aud_get_bool("use_file_cover") && !depth)
{
/* Look for images matching file name */
while ((name = g_dir_read_name(d)))
{
StringBuf newpath = filename_build({path, name});
if (has_front_cover_extension(name) &&
same_basename(name, params->filename) &&
!g_file_test(newpath, G_FILE_TEST_IS_DIR))
{
g_dir_close(d);
return String(newpath);
}
}
g_dir_rewind(d);
}
/* Search for files using filter */
while ((name = g_dir_read_name(d)))
{
StringBuf newpath = filename_build({path, name});
if (has_front_cover_extension(name) &&
cover_name_filter(name, params->include, true) &&
!cover_name_filter(name, params->exclude, false) &&
!g_file_test(newpath, G_FILE_TEST_IS_DIR))
{
g_dir_close(d);
return String(newpath);
}
}
g_dir_rewind(d);
if (aud_get_bool("recurse_for_cover") &&
depth < aud_get_int("recurse_for_cover_depth"))
{
/* Descend into directories recursively. */
while ((name = g_dir_read_name(d)))
{
StringBuf newpath = filename_build({path, name});
if (g_file_test(newpath, G_FILE_TEST_IS_DIR))
{
String tmp =
fileinfo_recursive_get_image(newpath, params, depth + 1);
if (tmp)
{
g_dir_close(d);
return tmp;
}
}
}
}
g_dir_close(d);
return String();
}
String art_search(const char * filename)
{
StringBuf local = uri_to_filename(filename);
if (!local)
return String();
const char * elem = last_path_element(local);
if (!elem)
return String();
String include = aud_get_str("cover_name_include");
String exclude = aud_get_str("cover_name_exclude");
SearchParams params = {String(elem), str_list_to_index(include, ", "),
str_list_to_index(exclude, ", ")};
cut_path_element(local, elem - local);
String image_local = fileinfo_recursive_get_image(local, ¶ms, 0);
return image_local ? String(filename_to_uri(image_local)) : String();
}