@echo off
Rem
Rem WARNING WARNING WARNING: This file needs to have DOS CRLF end-of-line
Rem format, or else stock DOS/Windows shells will refuse to run it.
Rem
Rem This batch file unpacks the Bison distribution while simultaneously
Rem renaming some of the files whose names are invalid on DOS or conflict
Rem with other file names after truncation to DOS 8+3 namespace.
Rem
Rem Invoke like this:
Rem
Rem     djunpack bison-XYZ.tar
Rem
Rem where XYZ is the version number.  If the argument includes leading
Rem directories, it MUST use backslashes, not forward slashes.
Rem
Rem The following 2 lines need to be changed with each new Bison release, to
Rem be identical to the name of the top-level directory where the Bison
Rem distribution unpacks itself.
set ENVIRONMENT_SIZE_TEST_STRING=ENVIRONMENT_SIZE_TEST_STRING
if "%ENVIRONMENT_SIZE_TEST_STRING%"=="ENVIRONMENT_SIZE_TEST_STRING" GoTo EnvOk
Rem If their environment space is too small, re-exec with a larger one
command.com /e:4096 /c %0 %1
GoTo End
:EnvOk
set ENVIRONMENT_SIZE_TEST_STRING=
if "%1" == "" GoTo NoArgument
if not exist %1 GoTo NoArchive
Rem Extract top src dir from archive file.
djtar -t %1 > top_src.dir
Rem The following uses a feature of COPY whereby it does not copy
Rem empty files.  We need that because the previous line will create
Rem an empty fnchange.tmp even if the command failed for some reason.
copy top_src.dir junk.tmp > nul
if not exist junk.tmp GoTo NoDjTar
del junk.tmp
sed "1{s/^.*bison-/djtar -x -p -o bison-/;s|$|djgpp/fnchange.lst %%1 > fnchange.tmp|};2,$d" top_src.dir > ext_list.bat
Rem See the comment above about the reason for using COPY.
copy ext_list.bat junk.tmp > nul
if not exist junk.tmp GoTo NoSed
del junk.tmp
Rem Extract fnchange.lst from archive.
call ext_list.bat %1
del ext_list.bat
sed "1{s|^.*bison-|s/@V@/bison-|;s|$|g|};2,$d" top_src.dir > version.sed
sed -f version.sed < fnchange.tmp > fnchange.lst
del version.sed
del fnchange.tmp
del top_src.dir
Rem unpack the source distribution
djtar -x -n fnchange.lst %1
del fnchange.lst
GoTo End
:NoSed
del junk.tmp
echo FAIL: Sed is not available.
GoTo End
:NoDjTar
del junk.tmp
echo FAIL: DJTAR is not available or no fnchange.lst file in %1.
GoTo End
:NoArchive
echo FAIL: the file %1 does not seem to exist.
echo Remember that %1 cannot use forward slashes, only backslashes.
GoTo End
:NoArgument
echo FAIL: no archive file has been specified.
echo Remember that the file name cannot use forward slashes, only backslashes.
:End