@echo off
flex -V > NUL
if errorlevel 1 goto noflex

if "%1" == "src\backend\parser\scan.l" call :generate %1 src\backend\parser\scan.c -CF
if "%1" == "src\backend\bootstrap\bootscanner.l" call :generate %1 src\backend\bootstrap\bootscanner.c
if "%1" == "src\backend\utils\misc\guc-file.l" call :generate %1 src\backend\utils\misc\guc-file.c
if "%1" == "src\pl\plpgsql\src\scan.l" call :generate %1 src\pl\plpgsql\src\pl_scan.c
if "%1" == "src\interfaces\ecpg\preproc\pgc.l" call :generate %1 src\interfaces\ecpg\preproc\pgc.c
if "%1" == "src\bin\psql\psqlscan.l" call :generate %1 src\bin\psql\psqlscan.c

echo Unknown flex input: %1
exit 1

:generate
flex %3 -o%2 %1
exit %errorlevel%

:noflex
echo WARNING! flex install not found, attempting to build without
exit 0
