May be it's a bit too late, but nevertheless.
I've a loader script implementation to load a configuration file with a common format between Windows Batch and Unix Bash Shell scripts.
Format description:
# FORMAT:
# [<attributes>] <variable>[:[<class_name>]]=<value>
#
# <attributes>: Variable space separated attributes: export
# <variable>: Variable name corresponding to the regex: [_a-zA-Z][_a-zA-Z0-9]*
# <class_name>: class variant name: OSWIN | OSUNIX | BAT | SH
# OSWIN: Apply on Windows system including cygwin/mingw/msys subsystems.
# OSUNIX: Apply on Unix/Linux systems excluding cygwin/mingw/msys subsystems.
# BAT: Apply on Windows system when this file has loaded from the Windows batch script loader.
# SH: Apply on any system when this file has loaded from the Bash shell script loader.
#
# <value>: Can start by the `"` quote character, but two quotes does remove only when exist on both ends of a value.
#
Note: The export attribute has meaning only in the Unix Shell parser.
config file example:
export PYTHON_EXE_PATH:OSWIN="c:/python/x86/38/python.exe"
export PYTHON_EXE_PATH:OSUNIX=python3
export PYTHONDONTWRITEBYTECODE=1
MY_SHELL_SCRIPT:BAT=blabla.bat
MY_SHELL_SCRIPT:SH=blabla.sh
usage example:
call load_config.bat . . myvars.vars
This will generate the myvars.vars from the myvars.vars.in file and load it.
The script does generate an instance configuration file from a template file before parse an instance file. Implementation a bit complicated and might change in the future:
https://github.com/andry81/contools/tree/HEAD/Scripts/Tools/build/load_config.bat
https://github.com/andry81/contools/tree/HEAD/Scripts/Tools/build/.load_config
CAUTION:
Seems the stackoverflow incorrectly handles tabulation characters (and loses other characters like \x01) in the copy-pasted code, so the below code might not work if you copy it directly by CTRL+C. Use links above to directly download the script.
Old implementation (just for example):
@echo off
setlocal DISABLEDELAYEDEXPANSION
set "__CONFIG_IN_DIR=%~1"
set "__CONFIG_OUT_DIR=%~2"
set "__CONFIG_FILE=%~3"
if not defined __CONFIG_IN_DIR (
echo.%~nx0: error: input config directory is not defined.
exit /b 1
) >&2
if not defined __CONFIG_OUT_DIR (
echo.%~nx0: error: output config directory is not defined.
exit /b 2
) >&2
set "__CONFIG_IN_DIR=%__CONFIG_IN_DIR:\=/%"
set "__CONFIG_OUT_DIR=%__CONFIG_OUT_DIR:\=/%"
if "%__CONFIG_IN_DIR:~-1%" == "/" set "__CONFIG_IN_DIR=%__CONFIG_IN_DIR:~0,-1%"
if "%__CONFIG_OUT_DIR:~-1%" == "/" set "__CONFIG_OUT_DIR=%__CONFIG_OUT_DIR:~0,-1%"
if not exist "%__CONFIG_IN_DIR%\" (
echo.%~nx0: error: input config directory does not exist: "%__CONFIG_IN_DIR%".
exit /b 10
) >&2
if not exist "%__CONFIG_OUT_DIR%\" (
echo.%~nx0: error: output config directory does not exist: "%__CONFIG_OUT_DIR%".
exit /b 11
) >&2
if not exist "%__CONFIG_OUT_DIR%\%__CONFIG_FILE%" ^
if exist "%__CONFIG_IN_DIR%/%__CONFIG_FILE%.in" (
echo."%__CONFIG_IN_DIR%/%__CONFIG_FILE%.in" -^> "%__CONFIG_OUT_DIR%/%__CONFIG_FILE%"
type "%__CONFIG_IN_DIR:/=\%\%__CONFIG_FILE%.in" > "%__CONFIG_OUT_DIR%/%__CONFIG_FILE%"
)
rem load configuration files
if not exist "%__CONFIG_OUT_DIR%/%__CONFIG_FILE%" (
echo.%~nx0: error: config file is not found: "%__CONFIG_OUT_DIR%/%__CONFIG_FILE%".
exit /b 20
) >&2
for /F "usebackq eol=# tokens=* delims=" %%i in ("%__CONFIG_OUT_DIR%/%__CONFIG_FILE%") do (
endlocal
setlocal DISABLEDELAYEDEXPANSION
for /F "eol=# tokens=1,* delims==" %%j in ("%%i") do (
set "__VAR=%%j"
set "__VALUE=%%k"
call :PARSE_EXPR && (
setlocal ENABLEDELAYEDEXPANSION
for /F "tokens=1,* delims==" %%i in ("!__VAR!=!__VALUE!") do (
endlocal
endlocal
set "%%i=%%j"
)
type nul>nul
) || endlocal
)
)
exit /b 0
:PARSE_EXPR
if not defined __VAR exit /b 1
rem CAUTION:
rem Inplace trim of surrounded white spaces ONLY from left and right sequences as a whole for performance reasons.
rem
:TRIM_VAR_NAME
:TRIM_VAR_NAME_LEFT_LOOP
if not defined __VAR exit /b 1
if not ^%__VAR:~0,1%/ == ^ / if not ^%__VAR:~0,1%/ == ^ / goto TRIM_VAR_NAME_RIGHT_LOOP
set "__VAR=%__VAR:~1%"
goto TRIM_VAR_NAME_LEFT_LOOP
:TRIM_VAR_NAME_RIGHT_LOOP
if not ^%__VAR:~-1%/ == ^ / if not ^%__VAR:~-1%/ == ^ / goto TRIM_VAR_NAME_RIGHT_LOOP_END
set "__VAR=%__VAR:~0,-1%"
if not defined __VAR exit /b 1
goto TRIM_VAR_NAME_RIGHT_LOOP
:TRIM_VAR_NAME_RIGHT_LOOP_END
if not defined __VALUE exit /b 0
rem Replace a value quote characters by the \x01 character.
set "__VALUE=%__VALUE:"=%"
:TRIM_VAR_VALUE
setlocal DISABLEDELAYEDEXPANSION
:TRIM_VAR_VALUE_LEFT_LOOP
if not defined __VALUE exit /b 0
if not ^%__VALUE:~0,1%/ == ^ / if not ^%__VALUE:~0,1%/ == ^ / goto TRIM_VAR_VALUE_RIGHT_LOOP
set "__VALUE=%__VALUE:~1%"
goto TRIM_VAR_VALUE_LEFT_LOOP
:TRIM_VAR_VALUE_RIGHT_LOOP
if not ^%__VALUE:~-1%/ == ^ / if not ^%__VALUE:~-1%/ == ^ / goto TRIM_VAR_VALUE_RIGHT_LOOP_END
set "__VALUE=%__VALUE:~0,-1%"
if not defined __VALUE exit /b 0
goto TRIM_VAR_VALUE_RIGHT_LOOP
:TRIM_VAR_VALUE_RIGHT_LOOP_END
(
endlocal
set "__VALUE=%__VALUE%"
)
for /F "eol= tokens=1,* delims=:" %%i in ("%__VAR%") do (
set "__VAR=%%i"
set "__PLATFORM=%%j"
)
if not defined __VAR exit /b 1
if defined __PLATFORM ^
if not "%__PLATFORM%" == "BAT" ^
if not "%__PLATFORM%" == "WIN" ^
if not "%__PLATFORM%" == "OSWIN" exit /b 1
for /F "eol=# tokens=1,* delims= " %%i in ("%__VAR%") do (
set "__ATTR=%%i"
set "__VAR=%%j"
)
if not defined __VAR (
set "__VAR=%__ATTR%"
set "__ATTR="
)
if not defined __VAR exit /b 1
if ^/ == ^%__VALUE:~1,1%/ goto PREPARSE_VALUE
if not ^/ == ^%__VALUE:~0,1%/ goto PREPARSE_VALUE
if not ^/ == ^%__VALUE:~-1%/ goto PREPARSE_VALUE
:REMOVE_QUOTES
for /F "tokens=* delims=" %%i in ("%__VALUE:~1,-1%") do set "__VALUE=%%i"
if not defined __VALUE exit /b 0
goto PARSE_VALUE
:PREPARSE_VALUE
set __HAS_VALUE=0
for /F "eol=# tokens=* delims=" %%i in ("%__VALUE%") do set "__HAS_VALUE=1"
if %__HAS_VALUE% EQU 0 (
set "__VALUE="
exit /b 0
)
:PARSE_VALUE
rem recode quote and exclamation characters
set "__ESC__=^"
set __QUOT__=^"
set "__EXCL__=!"
set "__VALUE=%__VALUE:!=!__EXCL__!%"
set "__VALUE=%__VALUE:^=!__ESC__!%"
set "__VALUE=%__VALUE:=!__QUOT__!%"
exit /b 0
