Added multilanguage support with automatic detection of OS language

Makefile

@@ -15,12 +15,12 @@ WINDRES = windres
 LD = gcc
 RM = rm -f
 
-CFLAGS += -Os
-LDFLAGS += -lcomdlg32 -mwindows
+CFLAGS += -Os -DUNICODE -D_UNICODE -DWINVER=0x0501 -D_WIN32_WINNT=0x0501
+LDFLAGS += -lcomdlg32 -mwindows -municode
 
 TARGET = ExtractMotionPhotos.exe
-OBJ = main.o res.o
-HEADERS = 
+OBJ = main.o lang.o res.o
+HEADERS = lang.h lang_en-us.h lang_zh-tw.h
 RES_O = res.o
 RES_RC = res.rc
 RES_DEPENDS = icon_multires.ico

lang.c

@@ -0,0 +1,52 @@
+/* Language base - this contains the language detector function */
+
+#include <windows.h>
+#include <wchar.h>
+#include <string.h>
+#include "lang.h"
+
+enum {
+	LANG_EN_US = 0,
+	LANG_ZH_TW = 1,
+};
+
+int lang_index;
+const WCHAR *lang_tbl[][N_ELEMS] =
+{
+	//ID 0: English
+	{
+#include "lang_en-us.h"
+	},
+	//ID 1: Chinese (Traditional)
+	{
+#include "lang_zh-tw.h"
+	},
+};
+
+void detectLanguage(int argc, WCHAR **argv) {
+	LANGID lang;
+	int offs;
+
+	//append "_en" to exe name to force English
+	offs = wcslen(argv[0]) - 7;
+	if(0 == _wcsicmp(argv[0]+offs, L"_en.exe"))
+		lang_index = LANG_EN_US;
+
+	//append "_zh" to exe name to force Chinese
+	else if(0 == _wcsicmp(argv[0]+offs, L"_zh.exe"))
+		lang_index = LANG_ZH_TW;
+
+	//otherwise, follow the system preferred language settings
+	else {
+		lang = GetUserDefaultUILanguage();
+		if((lang & 0x0ff) == 0x04)
+			//xx04 => some form of Chinese; we only have 1 Chinese translation, so use that for all Chinese locales
+			lang_index = LANG_ZH_TW;
+		else
+			lang_index = LANG_EN_US;
+	}
+}
+
+const WCHAR* TR(int id) {
+	return lang_tbl[lang_index][id];
+}

lang.h

@@ -0,0 +1,35 @@
+/* Language base - this defines language structures and then includes a special
+ * file for each language.
+ */
+
+#ifndef __LANG_H_
+#define __LANG_H_
+
+enum lang_elems {
+	USAGE,
+	APP_TITLE,
+	FILETYPES,
+	OPEN_TITLEBAR,
+	SKIP_LONG_PATH,
+	ERROR_TITLEBAR,
+	ERROR_TOO_MANY_FILES_NUM,
+	ERROR_TOO_MANY_FILES_UNK,
+	PHOTO_APPEND,
+	VIDEO_APPEND,
+	ERROR_OUT_OF_MEMORY,
+	SKIP_READ_ERROR,
+	SKIP_WRITE_ERROR,
+	SUCCESS_MSG,
+	SUCCESS_MSG_SKIP,
+	SUCCESS_TITLEBAR,
+	FAILURE_TITLEBAR,
+	N_ELEMS
+};
+
+extern int lang_index;
+extern const WCHAR *lang_tbl[2][N_ELEMS];
+
+void detectLanguage(int argc, WCHAR **argv);
+const WCHAR* TR(int id);
+
+#endif /* __LANG_H_ */

lang_en-us.h

@@ -0,0 +1,62 @@
+//Language file for English -- just the strings themselves; position determines which ID goes with them
+
+/* USAGE */
+	L"You can use this program 3 different ways:\r\n"
+	L"\r\n"
+	L"GUI USE: Just run it. You'll get an file-open dialog where you can open .jpg files. Use ctrl or shift or drag to select more than one.\r\n"
+	L"\r\n"
+	L"DRAG & DROP USE: Drag one or more motion photos onto the icon for this exe.\r\n"
+	L"\r\n"
+	L"COMMAND LINE USE: Run this program with one or more motion photo file names as arguments. Remember to use \"quotes\" if there are spaces in the names.\r\n"
+	L"\r\n"
+	L"Any way you run it, the original files will not be modified. The extracted photo and video will be stored in *_photo.jpg and *_video.mp4 where * is the name of the original file, minus the .jpg extension.\r\n"
+	L"\r\n"
+	L"Coded by Chupi383. All credit for the method goes to goofwear at the XDA forums. I've just ported their .bat file to plain C and Win32."
+,
+/* APP_TITLE */
+	L"Samsung Motion Photo Batch Extractor"
+,
+/* FILETYPES */
+	L"Motion Photos (*.jpg)\0*.JPG\0All Files\0*.*\0\0"
+,
+/* OPEN_TITLEBAR */
+	L"Open some Samsung Motion Photos"
+,
+/* SKIP_LONG_PATH */
+	L"Skipping too-long path:\r\n%s%s%s"
+,
+/* ERROR_TITLEBAR */
+	L"Error"
+,
+/* ERROR_TOO_MANY_FILES_NUM */
+	L"You've selected too many files. I can only do up to %d at a time."
+,
+/* ERROR_TOO_MANY_FILES_UNK */
+	L"You've selected too many files. Try selecting fewer files and process them in bunches."
+,
+/* PHOTO_APPEND */
+	L"_photo.jpg"
+,
+/* VIDEO_APPEND */
+	L"_video.mp4"
+,
+/* ERROR_OUT_OF_MEMORY */
+	L"Can't allocate RAM to read %ld bytes from %s"
+,
+/* SKIP_READ_ERROR */
+	L"Skipping due to read error:\r\n%s"
+,
+/* SKIP_WRITE_ERROR */
+	L"Can't write to %s"
+,
+/* SUCCESS_MSG */
+	L"Finished extracting Motion Photos\r\n    Photos extracted: %d\r\n    Videos extracted: %d"
+,
+/* SUCCESS_MSG_SKIP */
+	L"\r\n%d files were skipped because they weren't Motion Photos"
+,
+/* SUCCESS_TITLEBAR */
+	L"Success"
+,
+/* FAILURE_TITLEBAR */
+	L"Failure"

lang_zh-tw.h

@@ -0,0 +1,62 @@
+//Language file for Chinese (Traditional) -- just the strings themselves; position determines which ID goes with them
+
+/* USAGE */
+	L"有三種方式可以使用本軟體：\r\n"
+	L"\r\n"
+	L"一：點開軟體後選擇你要轉存的照片，你可以使用Ctrl或是Shift來多選檔案。\r\n"
+	L"\r\n"
+	L"二：把你要的照片拖移到本軟體的icon上也能轉存！\r\n"
+	L"\r\n"
+	L"三：你也能使用Command Line來處理喔！ （記得用\"quotes\"取代空格）\r\n"
+	L"\r\n"
+	L"請放心：無論你怎麼做，原始檔案都不會被修改。轉存成功的檔案將會存在原始檔案位置，並新增為 *_photo.jpg 和 *_video.mp4。\r\n"
+	L"\r\n"
+	L"GUI軟體由Chupi383撰寫，軟體內核由XDA forums的goofwear撰寫，Andylain翻譯正體中文，詳細中文使用教學請上「安迪連碎碎念」。"
+,
+/* APP_TITLE */
+	L"三星動態相片批次轉存工具"
+,
+/* FILETYPES */
+	L"動態相片 (*.jpg)\0*.JPG\0所有檔案 (*.*)\0*.*\0\0"
+,
+/* OPEN_TITLEBAR */
+	L"開啟一些動態相片"
+,
+/* SKIP_LONG_PATH */
+	L"已忽略太長的路徑：\r\n%s%s%s"
+,
+/* ERROR_TITLEBAR */
+	L"發生錯誤"
+,
+/* ERROR_TOO_MANY_FILES_NUM */
+	L"你一次選太多檔案了。我一次只能處理一 %d 個檔案。"
+,
+/* ERROR_TOO_MANY_FILES_UNK */
+	L"你一次選太多檔案了。嘗試選少一點檔案吧！"
+,
+/* PHOTO_APPEND */
+	L"_photo.jpg"
+,
+/* VIDEO_APPEND */
+	L"_video.mp4"
+,
+/* ERROR_OUT_OF_MEMORY */
+	L"記憶體定位錯誤，無法讀取 %ld bytes 上的 %s 檔案，有可能電腦的RAM不足。"
+,
+/* SKIP_READ_ERROR */
+	L"由於讀取錯誤，已跳過處理：\r\n%s"
+,
+/* SKIP_WRITE_ERROR */
+	L"無法寫入 %s 可能目的地已滿或是為唯讀。"
+,
+/* SUCCESS_MSG */
+	L"動態相片轉存結果：\r\n    有 %d 張照片輸出成功！\r\n    有 %d 個影片輸出成功！"
+,
+/* SUCCESS_MSG_SKIP */
+	L"\r\n%d 個檔案被跳過了，因為它們不是三星動態相片。"
+,
+/* SUCCESS_TITLEBAR */
+	L"轉存成功"
+,
+/* FAILURE_TITLEBAR */
+	L"轉存失敗"