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Diffstat (limited to 'mcon/U/fieldn.U')
| -rw-r--r-- | mcon/U/fieldn.U | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/mcon/U/fieldn.U b/mcon/U/fieldn.U new file mode 100644 index 0000000..3c71a31 --- /dev/null +++ b/mcon/U/fieldn.U @@ -0,0 +1,82 @@ +?RCS: $Id: fieldn.U 167 2013-05-08 17:58:00Z rmanfredi $ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic License; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?RCS: $Log: Findhdr.U,v $ +?RCS: Revision 3.0.1.2 1994/10/29 15:53:08 ram +?RCS: patch36: added ?F: line for metalint file checking +?RCS: +?RCS: Revision 3.0.1.1 1994/05/06 14:03:56 ram +?RCS: patch23: cppminus must be after other cppflags, not before +?RCS: +?RCS: Revision 3.0 1993/08/18 12:04:54 ram +?RCS: Baseline for dist 3.0 netwide release. +?RCS: +?MAKE:fieldn cppfilter: grep test tr rm cat startsh \ + cppstdin cppminus osname +?MAKE: -pick add $@ %< +?S:fieldn: +?S: This variable is used internally by Configure. It contains the position +?S: of the included file name in cpp output. That is to say, when cpp +?S: pre-processes a #include <file> line, it replaces it by a # line which +?S: contains the original position in the input file and the full name of +?S: included file, between "quotes". +?S:. +?S:cppfilter: +?S: This variable is used internally by Configure. It either contains +?S: nothing or a shell piping stage to translate path components into "/". +?S: It is meant to be used as "... | $cppfilter $grep ..." i.e. without any +?S: explicit "|" character following it. +?S:. +?F:!fieldn +?T:pos testaccess cline +: determine filename position in cpp output +echo " " +echo "Computing filename position in cpp output for #include directives..." >&4 +echo '#include <stdio.h>' > foo.c +case "$osname" in +vos) + testaccess=-e +?X: VOS: path component separator is > + cppfilter="tr '\\\\>' '/' |" + ;; +*) + testaccess=-r + cppfilter='' + ;; +esac +$cat >fieldn <<EOF +$startsh +$cppstdin $cppminus <foo.c 2>/dev/null | \ +$grep '^[ ]*#.*stdio\.h' | \ +while read cline; do + pos=1 + set \$cline + while $test \$# -gt 0; do + if $test $testaccess \`echo \$1 | $tr -d '"'\`; then + echo "\$pos" + exit 0 + fi + shift + pos=\`expr \$pos + 1\` + done +done +EOF +chmod +x fieldn +fieldn=`./fieldn` +$rm -f foo.c fieldn +case $fieldn in +'') pos='???';; +1) pos=first;; +2) pos=second;; +3) pos=third;; +*) pos="${fieldn}th";; +esac +echo "Your cpp writes the filename in the $pos field of the line." + |