+++ /dev/null
-/*
- * Copyright (C) 2008 - 2016 The Geeqie Team
- *
- * Author: Klaus Ethgen
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "config.h"
-
-#ifdef HAVE_LUA
-
-#define _XOPEN_SOURCE
-
-#include <lua.h>
-#include <lauxlib.h>
-#include <lualib.h>
-
-#include <stdio.h>
-#include <glib.h>
-#include <string.h>
-#include <time.h>
-
-#include "main.h"
-#include "glua.h"
-#include "ui_fileops.h"
-#include "exif.h"
-
-static lua_State *L; /** The LUA object needed for all operations (NOTE: That is
- * a upper-case variable to match the documentation!) */
-
-/* Taking that definition from lua 5.1 source */
-#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 502
-int luaL_typerror(lua_State *L, int narg, const char *tname)
-{
- const char *msg = lua_pushfstring(L, "%s expected, got %s", tname, luaL_typename(L, narg));
- return luaL_argerror(L, narg, msg);
-}
-
-# define LUA_register_meta(L, meta) luaL_setfuncs(L, meta, 0);
-# define LUA_register_global(L, string, func) \
- lua_newtable(L); \
- luaL_setfuncs(L, func, 0); \
- lua_pushvalue(L, -1); \
- lua_setglobal(L, string)
-#else
-# define LUA_register_meta(L, meta) luaL_register(L, NULL, meta)
-# define LUA_register_global(L, string, func) luaL_register(L, string, func)
-#endif
-
-static FileData *lua_check_image(lua_State *L, int index)
-{
- FileData **fd;
- luaL_checktype(L, index, LUA_TUSERDATA);
- fd = (FileData **)luaL_checkudata(L, index, "Image");
- if (fd == NULL) luaL_typerror(L, index, "Image");
- return *fd;
-}
-
-static int lua_image_get_exif(lua_State *L)
-{
- FileData *fd;
- ExifData *exif;
- ExifData **exif_data;
-
- fd = lua_check_image(L, 1);
- exif = exif_read_fd(fd);
-
- exif_data = (ExifData **)lua_newuserdata(L, sizeof(ExifData *));
- luaL_getmetatable(L, "Exif");
- lua_setmetatable(L, -2);
-
- *exif_data = exif;
-
- return 1;
-}
-
-static int lua_image_get_path(lua_State *L)
-{
- FileData *fd;
-
- fd = lua_check_image(L, 1);
- lua_pushstring(L, fd->path);
- return 1;
-}
-
-static int lua_image_get_name(lua_State *L)
-{
- FileData *fd;
-
- fd = lua_check_image(L, 1);
- lua_pushstring(L, fd->name);
- return 1;
-}
-
-static int lua_image_get_extension(lua_State *L)
-{
- FileData *fd;
-
- fd = lua_check_image(L, 1);
- lua_pushstring(L, fd->extension);
- return 1;
-}
-
-static int lua_image_get_date(lua_State *L)
-{
- FileData *fd;
-
- fd = lua_check_image(L, 1);
- lua_pushnumber(L, fd->date);
- return 1;
-}
-
-static int lua_image_get_size(lua_State *L)
-{
- FileData *fd;
-
- fd = lua_check_image(L, 1);
- lua_pushnumber(L, fd->size);
- return 1;
-}
-
-static int lua_image_get_marks(lua_State *L)
-{
- FileData *fd;
-
- fd = lua_check_image(L, 1);
- lua_pushnumber(L, fd->marks);
- return 1;
-}
-
-static ExifData *lua_check_exif(lua_State *L, int index)
-{
- ExifData **exif;
- luaL_checktype(L, index, LUA_TUSERDATA);
- exif = (ExifData **)luaL_checkudata(L, index, "Exif");
- if (exif == NULL) luaL_typerror(L, index, "Exif");
- return *exif;
-}
-
-/* Interface for EXIF data */
-static int lua_exif_get_datum(lua_State *L)
-{
- const gchar *key;
- gchar *value = NULL;
- ExifData *exif;
- struct tm tm;
- time_t datetime;
-
- exif = lua_check_exif(L, 1);
- key = luaL_checkstring(L, 2);
- if (key == (gchar*)NULL || key[0] == '\0')
- {
- lua_pushnil(L);
- return 1;
- }
- if (!exif)
- {
- lua_pushnil(L);
- return 1;
- }
- value = exif_get_data_as_text(exif, key);
- if (strcmp(key, "Exif.Photo.DateTimeOriginal") == 0)
- {
- memset(&tm, 0, sizeof(tm));
- if (value && strptime(value, "%Y:%m:%d %H:%M:%S", &tm))
- {
- datetime = mktime(&tm);
- lua_pushnumber(L, datetime);
- return 1;
- }
- else
- {
- lua_pushnil(L);
- return 1;
- }
- }
- else if (strcmp(key, "Exif.Photo.DateTimeDigitized") == 0)
- {
- memset(&tm, 0, sizeof(tm));
- if (value && strptime(value, "%Y:%m:%d %H:%M:%S", &tm))
- {
- datetime = mktime(&tm);
- lua_pushnumber(L, datetime);
- return 1;
- }
- else
- {
- lua_pushnil(L);
- return 1;
- }
- }
- lua_pushstring(L, value);
- return 1;
-}
-
-/**
- * \brief Initialize the lua interpreter.
- */
-void lua_init(void)
-{
- L = luaL_newstate();
- luaL_openlibs(L); /* Open all libraries for lua programms */
-
- /* Now create custom methodes to do something */
- static const luaL_Reg meta_methods[] = {
- {NULL, NULL}
- };
-
- /* The Image metatable and methodes */
- static const luaL_Reg image_methods[] = {
- {"get_path", lua_image_get_path},
- {"get_name", lua_image_get_name},
- {"get_extension", lua_image_get_extension},
- {"get_date", lua_image_get_date},
- {"get_size", lua_image_get_size},
- {"get_exif", lua_image_get_exif},
- {"get_marks", lua_image_get_marks},
- {NULL, NULL}
- };
- LUA_register_global(L, "Image", image_methods);
- luaL_newmetatable(L, "Image");
- LUA_register_meta(L, meta_methods);
- lua_pushliteral(L, "__index");
- lua_pushvalue(L, -3);
- lua_settable(L, -3);
- lua_pushliteral(L, "__metatable");
- lua_pushvalue(L, -3);
- lua_settable(L, -3);
- lua_pop(L, 1);
- lua_pop(L, 1);
-
- /* The Exif table and methodes */
- static const luaL_Reg exif_methods[] = {
- {"get_datum", lua_exif_get_datum},
- {NULL, NULL}
- };
- LUA_register_global(L, "Exif", exif_methods);
- luaL_newmetatable(L, "Exif");
- LUA_register_meta(L, meta_methods);
- lua_pushliteral(L, "__index");
- lua_pushvalue(L, -3);
- lua_settable(L, -3);
- lua_pushliteral(L, "__metatable");
- lua_pushvalue(L, -3);
- lua_settable(L, -3);
- lua_pop(L, 1);
- lua_pop(L, 1);
-}
-
-/**
- * \brief Call a lua function to get a single value.
- */
-gchar *lua_callvalue(FileData *fd, const gchar *file, const gchar *function)
-{
- gint result;
- gchar *data = NULL;
- gchar *dir;
- gchar *path;
- FileData **image_data;
- gchar *tmp;
- GError *error = NULL;
- gboolean ok;
-
- ok = access(g_build_filename(get_rc_dir(), "lua", file, NULL), R_OK);
- if (ok == 0)
- {
- path = g_build_filename(get_rc_dir(), "lua", file, NULL);
- }
- else
- {
- /* FIXME: what is the correct way to find the scripts folder? */
- ok = access(g_build_filename("/usr/local/lib", GQ_APPNAME_LC, file, NULL), R_OK);
- if (ok == 0)
- {
- path = g_build_filename("/usr/local/lib", GQ_APPNAME_LC, file, NULL);
- }
- else
- {
- return g_strdup("");
- }
- }
-
- /* Collection Table (Dummy at the moment) */
- lua_newtable(L);
- lua_setglobal(L, "Collection");
-
- /* Current Image */
- image_data = (FileData **)lua_newuserdata(L, sizeof(FileData *));
- luaL_getmetatable(L, "Image");
- lua_setmetatable(L, -2);
- lua_setglobal(L, "Image");
-
- *image_data = fd;
- if (file[0] == '\0')
- {
- result = luaL_dostring(L, function);
- }
- else
- {
- result = luaL_dofile(L, path);
- g_free(path);
- g_free(dir);
- }
-
- if (result)
- {
- data = g_strdup_printf("Error running lua script: %s", lua_tostring(L, -1));
- return data;
- }
- data = g_strdup(lua_tostring(L, -1));
- tmp = g_locale_to_utf8(data, strlen(data), NULL, NULL, &error);
- if (error)
- {
- log_printf("Error converting lua output from locale to UTF-8: %s\n", error->message);
- g_error_free(error);
- }
- else
- {
- g_free(data);
- data = g_strdup(tmp);
- } // if (error) { ... } else
- return data;
-}
-
-#endif
-/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */
projects / geeqie.git / blobdiff