1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/tex/vc	Mon Mar 27 20:21:58 2006 +0000
     1.3 @@ -0,0 +1,140 @@
     1.4 +#! /bin/bash
     1.5 +#
     1.6 +
     1.7 +set -e  # abort on errors
     1.8 +shopt -s nullglob  # file globs that don't match expand
     1.9 +		   # to nothing
    1.10 +
    1.11 +#
    1.12 +# Check if $EDITOR is set, otherwise set to "vi".
    1.13 +#
    1.14 +: ${EDITOR:=vi}
    1.15 +
    1.16 +#
    1.17 +# Check for -f option ()
    1.18 +#
    1.19 +if [ "$1" = -f ]; then
    1.20 +    retry_lock=1
    1.21 +    shift
    1.22 +fi
    1.23 +
    1.24 +#
    1.25 +# Detect the name of the file to edit
    1.26 +#
    1.27 +unset FILE
    1.28 +
    1.29 +if [ -n "$1" ]; then
    1.30 +    if [ -f "$1" ]; then
    1.31 +	FILE=$1
    1.32 +    else
    1.33 +	if [ -d "$1" ]; then
    1.34 +	    cd $1
    1.35 +	else
    1.36 +	    FILE=$(package_name $1).changelog
    1.37 +	fi
    1.38 +    fi
    1.39 +fi
    1.40 +
    1.41 +if [ -z "$FILE" ]; then
    1.42 +    for f in *.changelog; do
    1.43 +	if [ -n "$FILE" ]; then
    1.44 +	    FILE=
    1.45 +	    break
    1.46 +	fi
    1.47 +	FILE=$f
    1.48 +    done
    1.49 +fi
    1.50 +
    1.51 +if [ -z "$FILE" ]; then
    1.52 +    for f in *.spec; do
    1.53 +	if [ -n "$FILE" ]; then
    1.54 +	    FILE=
    1.55 +	    break
    1.56 +	fi
    1.57 +	FILE=$f
    1.58 +    done
    1.59 +    if [ -n "$FILE" ]; then
    1.60 +	FILE=$(package_name $FILE).changelog
    1.61 +    fi
    1.62 +fi
    1.63 +
    1.64 +if [ -z "$FILE" ]; then
    1.65 +    echo "usage: ${0##*/} [filename[.changelog]|path [file_with_comment]]"
    1.66 +    echo "If no <filename> is given, exactly one *.changelog or"
    1.67 +    echo "*.spec file has to be in the cwd or in <path>."
    1.68 +    echo
    1.69 +    exit 1
    1.70 +fi
    1.71 +
    1.72 +user=`whoami`
    1.73 +
    1.74 +
    1.75 +COMMENT_FILE=$2
    1.76 +
    1.77 +#
    1.78 +# Create the lockfile and temporary file.
    1.79 +#
    1.80 +lockfile=.${FILE##*/}.lock
    1.81 +if [ "${FILE/\//}" != "$FILE" ]; then
    1.82 +    lockfile=${FILE%/*}/.$lockfile
    1.83 +fi
    1.84 +
    1.85 +if [ ! -w "$(dirname "$FILE")" ]; then
    1.86 +    echo "Write access to directory $(dirname "$FILE") required" >&2
    1.87 +    exit 1
    1.88 +fi
    1.89 +
    1.90 +if [ -e "$FILE" -a ! -w "$FILE" ]; then
    1.91 +    echo "Write access to file $FILE required" >&2
    1.92 +    exit 1
    1.93 +fi
    1.94 +
    1.95 +set -o noclobber
    1.96 +while ! echo $$@$(hostname -f) 2> /dev/null > $lockfile; do
    1.97 +    if [ -z "$retry_lock" ]; then
    1.98 +	echo "$lockfile: Lock by process $(cat $lockfile)" >&2
    1.99 +	echo "Please remove stale lockfiles manually" >&2
   1.100 +	exit 1
   1.101 +    fi
   1.102 +    echo "$lockfile: Waiting for process $(cat $lockfile) to release lock" >&2
   1.103 +    sleep 1
   1.104 +done
   1.105 +set +o noclobber
   1.106 +
   1.107 +tmpfile=$(mktemp /tmp/${0##*/}.XXXXXX)
   1.108 +trap "rm -f $lockfile $tmpfile" EXIT
   1.109 +
   1.110 +#
   1.111 +# Prepare the working copy and start the editor
   1.112 +#
   1.113 +
   1.114 +{   timestamp=$(LC_ALL=POSIX TZ=Europe/Berlin date)
   1.115 +    echo "-------------------------------------------------------------------"
   1.116 +    echo "$timestamp - $user"
   1.117 +    echo
   1.118 +    if [ -z "$COMMENT_FILE" ]; then
   1.119 +	echo "- "
   1.120 +    else
   1.121 +	cat $COMMENT_FILE
   1.122 +    fi
   1.123 +    echo
   1.124 +    if [ -f "$FILE" ]; then
   1.125 +    	cat $FILE
   1.126 +    fi
   1.127 +} >> $tmpfile \
   1.128 +|| exit 1
   1.129 +
   1.130 +if [ -z "$COMMENT_FILE" ]; then
   1.131 +    lines=1
   1.132 +    CHKSUM_BEFORE=$(md5sum $tmpfile | awk '{print $1}')
   1.133 +else
   1.134 +    lines=$(wc -l $COMMENT_FILE | awk '{print $1}')
   1.135 +    CHKSUM_BEFORE=has_changed
   1.136 +fi
   1.137 +
   1.138 +$EDITOR +$((3+lines)) $tmpfile
   1.139 +
   1.140 +if [ "$CHKSUM_BEFORE" = "$(md5sum $tmpfile | awk '{print $1}')" ]; then
   1.141 +    exit 1
   1.142 +fi
   1.143 +cat $tmpfile > $FILE