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93 lines
2.8 KiB
Bash
93 lines
2.8 KiB
Bash
#!/bin/sh
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# Extract the initialization actions from source files.
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#
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# Copyright (C) 1996, 97, 98, 99, 2000, 2001, 2002, 2004 Free Software Foundation, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this software; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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# Boston, MA 02110-1301 USA
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# Commentary:
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# Usage: guile-snarf [-o OUTFILE] [CPP-ARGS ...]
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# Initialization actions are extracted to OUTFILE or to standard
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# output when no OUTFILE has been specified or when OUTFILE is "-".
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# The C preprocessor is called with CPP-ARGS (which usually include a
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# input file) and the output is filtered for the actions.
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#
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# If there are errors during processing, OUTFILE is deleted and the
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# program exits with non-zero status.
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#
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# During snarfing, the pre-processor macro SCM_MAGIC_SNARFER is
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# defined. You can use this to avoid including snarfer output files
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# that don't yet exist by writing code like this:
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#
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# #ifndef SCM_MAGIC_SNARFER
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# #include "foo.x"
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# #endif
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#
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# If the environment variable CPP is set, use its value instead of the
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# C pre-processor determined at Guile configure-time: "@CPP@".
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# Code:
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## funcs
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modern_snarf () # writes stdout
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{
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## Apparently, AIX's preprocessor is unhappy if you try to #include an
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## empty file.
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echo "/* cpp arguments: $@ */" ;
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${cpp} -DSCM_MAGIC_SNARF_INITS -DSCM_MAGIC_SNARFER "$@" > ${temp} && cpp_ok_p=true
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grep "^ *\^ *\^" ${temp} | sed -e "s/^ *\^ *\^//" -e "s/\^\ *:\ *\^.*/;/"
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}
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## main
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# process command line
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if [ x"$1" = x--help ] ; then
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@AWK@ '/^#.Commentary:/,/^#.Code:/' $0 | grep -v Code: \
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| sed -e 1,2d -e 's/^. *//g'
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exit 0
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fi
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if [ x"$1" = x-o ]
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then outfile="$2" ; shift ; shift ;
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else outfile="-" ;
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fi
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# set vars and handler -- handle CPP override
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cpp_ok_p=false
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tempdir="/tmp/snarf.$$"
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(umask 077 && mkdir $tempdir) || exit 1
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temp="$tempdir/tmp"
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if [ x"$CPP" = x ] ; then cpp="@CPP@" ; else cpp="$CPP" ; fi
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trap "rm -rf $tempdir" 0 1 2 15
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if [ ! "$outfile" = "-" ] ; then
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modern_snarf "$@" > $outfile
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else
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modern_snarf "$@"
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fi
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# zonk outfile if errors occurred
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if $cpp_ok_p ; then
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exit 0
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else
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[ ! "$outfile" = "-" ] && rm -f $outfile
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exit 1
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fi
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# guile-snarf ends here
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