#!/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(){

}

# 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

}