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#!/bin/sh
#
# Check the format of the source files in the current directory - checks for a
# line length of 80 characters max and no tab characters.
#
# Optionally arguments are files or directories to check.
#
# -v: output the long lines (makes fixing them easier)
# -e: spawn an editor for each file that needs a change ($EDITOR must be
# defined). When using -e the script MUST be run from an interactive
# command line.
verbose=
edit=
vers=
test "$1" = "-v" && {
shift
verbose=yes
}
test "$1" = "-e" && {
shift
if test -n "$EDITOR"
then
edit=yes
# Copy the standard streams for the editor
exec 3>&0 4>&1 5>&2
else
echo "chkfmt -e: EDITOR must be defined" >&2
exit 1
fi
}
# Function to edit a single file - if the file isn't changed ask the user
# whether or not to continue. This stuff only works if the script is run from
# the command line (otherwise, don't specify -e or you will be sorry).
doed(){
cp "$file" "$file".orig
"$EDITOR" "$file" 0>&3 1>&4 2>&5 3>&- 4>&- 5>&- || exit 1
if cmp -s "$file".orig "$file"
then
rm "$file".orig
echo -n "$file: file not changed, type anything to continue: " >&5
read ans 0>&3
test -n "$ans" || return 1
fi
return 0
}
# In beta versions the version string which appears in files can be a little
# long and cause spuriously overlong lines. To avoid this subtitute the version
# string with a 'standard' version a.b.cc before checking for long lines.
if test -r png.h
then
vers="`sed -n -e \
's/^#define PNG_LIBPNG_VER_STRING .\([0-9]\.[0-9]\.[0-9][0-9a-z]*\).$/\1/p' \
png.h`"
echo "chkfmt: checking version $vers"
fi
if test -z "$vers"
then
echo "chkfmt: png.h not found, ignoring version number" >&2
fi
test -n "$1" || set -- .
find "$@" \( -type d \( -name '.git' -o -name '.libs' -o -name 'projects' \) \
-prune \) -o \( -type f \
! -name '*.[oa]' ! -name '*.l[oa]' ! -name '*.png' ! -name '*.out' \
! -name '*.jpg' ! -name '*.patch' ! -name '*.obj' ! -name '*.exe' \
! -name '*.com' ! -name '*.tar.*' ! -name '*.zip' ! -name '*.ico' \
! -name '*.res' ! -name '*.rc' ! -name '*.mms' ! -name '*.rej' \
! -name '*.dsp' ! -name '*.orig' ! -name '*.dfn' ! -name '*.swp' \
! -name '~*' ! -name '*.3' \
! -name 'missing' ! -name 'mkinstalldirs' ! -name 'depcomp' \
! -name 'aclocal.m4' ! -name 'install-sh' ! -name 'Makefile.in' \
! -name 'ltmain.sh' ! -name 'config*' -print \) | {
st=0
while read file
do
case "$file" in
*.mak|*[Mm]akefile.*|*[Mm]akefile)
# Makefiles require tabs, dependency lines can be this long.
check_tabs=
line_length=100;;
*.awk)
# Includes literal tabs
check_tabs=
# The following is arbitrary
line_length=132;;
*contrib/*/*.[ch])
check_tabs=yes
line_length=96;;
*)
check_tabs=yes
line_length=80;;
esac
# Note that vers can only contain 0-9, . and a-z
if test -n "$vers"
then
sed -e "s/$vers/a.b.cc/g" "$file" >"$file".$$
else
cp "$file" "$file".$$
fi
splt="`fold -$line_length "$file".$$ | diff -c "$file".$$ -`"
rm "$file".$$
if test -n "$splt"
then
echo "$file: lines too long"
st=1
if test -n "$EDITOR" -a -n "$edit"
then
doed "$file" || exit 1
elif test -n "$verbose"
then
echo "$splt"
fi
fi
if test -n "$check_tabs"
then
tab="`tr -c -d '\t' <"$file"`"
if test -n "$tab"
then
echo "$file: file contains tab characters"
st=1
if test -n "$EDITOR" -a -n "$edit"
then
doed "$file" || exit 1
elif test -n "$verbose"
then
echo "$splt"
fi
fi
fi
done
exit $st
}
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