Add support to process directories of photos.

MotionPhoto2.cmd

@@ -1,2 +1,108 @@
 @ECHO OFF
-powershell.exe -executionpolicy bypass -nologo -file "%~dp0MotionPhoto2.ps1" -imageFile "%~1" -videoFile "%~2" -outputFile "%~3"
+SETLOCAL EnableDelayedExpansion
+SETLOCAL EnableExtensions
+
+IF [%~1] == [] GOTO:Usage
+IF EXIST "%~1\*" GOTO:ProcessDirectory
+
+powershell.exe -executionpolicy bypass -nologo -file "%~dp0MotionPhoto2.ps1" -imageFile "%~1" -videoFile "%~2" -outputFile "%~3"
+GOTO:EOF
+
+:ProcessDirectory
+SET _SOURCE=%~f1
+SET _TARGET=%~f1
+IF NOT [%~2] == [] (
+	IF NOT EXIST "%~f2\*" (
+		ECHO Target directory "%~f2" does not exist!
+		EXIT /b 1
+	)
+	SET _TARGET=%~f2
+)
+ECHO Processing directory [%~f1] to directory [%_TARGET%]
+ECHO.
+CALL:strlen _SOURCE _SOURCE_LEN
+CALL:strlen _TARGET _TARGET_LEN
+
+FOR /R "%_SOURCE%" %%a IN (*.jpeg,*.jpg,*.heic,*.heif) DO (
+	SET _SOURCEDIR=%%~dpa
+	REM _TARGETCHK is substring of the file to process of the length of _TARGET. In case target is subdir of source, do not process the files aready in target.
+	CALL SET "_TARGETCHK=!_SOURCEDIR:~0,%_TARGET_LEN%!"
+	IF /I "!_TARGETCHK!" NEQ "%_TARGET%" (
+		REM _TARGETDIR is set to _TARGET + relative path in _SOURCE (without filename)
+		CALL SET "_TARGETDIR=%%_TARGET%%!_SOURCEDIR:~%_SOURCE_LEN%!"
+		FOR %%b IN ("%%~dpna.mov","%%~dpna.mp4") DO (
+			IF EXIST "%%~b" (
+				IF NOT EXIST "!_TARGETDIR!\*" (
+					ECHO Creating target subdirectory [!_TARGETDIR!]
+					MD "!_TARGETDIR!" || EXIT /b 1
+				)
+				ECHO Converting [%%~a] and [%%~b] to [!_TARGETDIR!%%~nxa]
+				powershell.exe -executionpolicy bypass -nologo -file "%~dp0MotionPhoto2.ps1" -imageFile "%%~a" -videoFile "%%~b" -outputFile "!_TARGETDIR!%%~nxa" || EXIT /b 1
+				ECHO.
+			)
+		)
+	)
+)
+
+REM And now, that all Live Photos have been converted to MotionPhotos, copy the rest of the files over too...
+FOR /R "%_SOURCE%" %%a IN (*.*) DO (
+	SET _SOURCEDIR=%%~dpa
+	CALL SET "_TARGETCHK=!_SOURCEDIR:~0,%_TARGET_LEN%!"
+	IF /I "!_TARGETCHK!" NEQ "%_TARGET%" (
+		CALL SET "_TARGETDIR=%%_TARGET%%!_SOURCEDIR:~%_SOURCE_LEN%!"
+		IF NOT EXIST "!_TARGETDIR!%%~nxa" (
+			SET _VIDEO=false
+			SET _SKIPCOPY=false
+			IF /I [%%~xa] == [.mov] SET _VIDEO=true
+			IF /I [%%~xa] == [.mp4] SET _VIDEO=true
+			IF [!_VIDEO!] == [true] (
+				FOR %%b IN ("%%~dpna.jpeg", "%%~dpna.jpg", "%%~dpna.heic", "%%~dpna.heif") DO IF EXIST "%%~b" SET _SKIPCOPY=true
+			)
+			IF [!_SKIPCOPY!] == [false] (
+				IF NOT EXIST "!_TARGETDIR!\*" (
+					ECHO Creating target subdirectory [!_TARGETDIR!]
+					MD "!_TARGETDIR!" || exit /b 1
+				)
+				ECHO Copying regular file [%%~a] to [!_TARGETDIR!]
+				COPY "%%~a" "!_TARGETDIR!%%~nxa" > nul || exit /b 1
+			)
+		)
+	)
+)
+GOTO:EOF
+
+:strlen  StrVar  [RtnVar]
+  set "s=#!%~1!"
+  set "len=0"
+  for %%N in (4096 2048 1024 512 256 128 64 32 16 8 4 2 1) do (
+    if "!s:~%%N,1!" neq "" (
+      set /a "len+=%%N"
+      set "s=!s:~%%N!"
+    )
+  )
+  if "%~2" neq "" (set %~2=%len%) else echo %len%
+GOTO:EOF
+
+:Usage
+ECHO Parameters missing.
+ECHO.
+ECHO To process a single file:
+ECHO %~nx0 image_file.(jpg^|heic) video_file.(mov^|mp4) output_file.(jpg^|heic)
+ECHO.
+ECHO Example:
+ECHO %~nx0 IMG_0001.heic IMG_001.mov ..\fixed\IMG_0001.heic
+ECHO.
+ECHO To process a directory:
+ECHO %~nx0 input_directory [output_directory]
+ECHO.
+ECHO Example (note that output directory has to exist as a safety feature):
+ECHO MD "Camera Roll\Fixed"
+ECHO %~nx0 "Camere Roll" "Camera Roll\Fixed"
+ECHO.
+ECHO All files in input directory will be copied to output directory, except LivePhotos.
+ECHO Those will be merged and saved as MotionPhoto in target.
+ECHO Subdirectories are supported.
+ECHO In case output directory is missing, files are modified in place.
+ECHO This is not really recommended - you'll lose the original file and there
+ECHO will also be a now-unneccessary movie files left around.
+GOTO:EOF