-Change parse.bat to verify yacc/bison and sed and work with the two parser generators.

builds/win32/parse.bat

@@ -1,5 +1,77 @@
-yacc -l -d -b dsql ..\..\src\dsql\parse.y
-sed -f ..\..\src\dsql\parse.sed <dsql.tab.c >..\..\src\dsql\parse.cpp
-copy dsql.tab.h ..\..\src\dsql\dsql.tab.h
-del dsql.tab.c
-del dsql.tab.h
+
+@echo off
+
+@echo.
+@set PARSER=
+@set SED=
+@call :CHECKTOOLS
+@if "%PARSER%" == "" ((goto :HELP_TOOLS) & (goto :EOF))
+@if "%SED%" == "" ((goto :HELP_TOOLS) & (goto :EOF))
+
+@if "%PARSER%" == "YACC" (call :YACC_PROC) else (call :BISON_PROC)
+@call :SED_PROC
+@goto :END
+
+::=====================================
+:CHECKTOOLS
+:: verify our unix tool set is available
+
+@bison --help > nul 2>nul
+@if not errorlevel 9009 ((set PARSER=BISON) & (goto :sed_pro))
+
+@yacc --help > nul 2> nul
+@if not errorlevel 9009 ((set PARSER=YACC) & (goto :sed_pro))
+
+:sed_pro
+@sed --help > nul 2> nul
+@if not errorlevel 9009 (set SED=TRUE)
+
+@goto :EOF
+
+::=====================================
+:BISON_PROC
+@set PARSER=BISON
+@echo .
+@echo Processing with bison
+@bison -y -l -d -b dsql ..\..\src\dsql\parse.y
+@goto :EOF
+
+::=====================================
+:YACC_PROC
+@set PARSER=YACC
+@echo .
+@echo Processing with yacc
+@yacc -l -d -b dsql ..\..\src\dsql\parse.y
+@goto :EOF
+
+::=====================================
+:SED_PROC
+@echo .
+@echo Processing with sed
+@sed -f ..\..\src\dsql\parse.sed <dsql.tab.c >..\..\src\dsql\parse.cpp
+@copy dsql.tab.h ..\..\src\dsql\dsql.tab.h
+@del dsql.tab.c
+@del dsql.tab.h
+@goto :EOF
+
+::=================
+:HELP_TOOLS
+@echo:
+@echo   Please check that these utilities programs are
+@echo   all on your path:
+@echo:
+@echo     sed.exe
+@echo     bison.exe or yacc.exe (only one needed)
+@echo:
+@echo   If you do not have these utilities they may be downloaded
+@echo   from the following sites
+@echo:
+@echo     sed.exe and bison 1.35 from http://gnuwin32.sourceforge.net/
+@echo:
+@echo     byacc 1.9 from ftp://garbo.uwasa.fi/pc/unix/
+@echo     
+@echo:
+@goto :END
+
+
+:END