vym: tex/vc@174dd40bf06a

     1 #! /bin/bash

2 #

     4 set -e  # abort on errors

     5 shopt -s nullglob  # file globs that don't match expand

     6 		   # to nothing

8 #

     9 # Check if $EDITOR is set, otherwise set to "vi".

    10 #

    11 : ${EDITOR:=vi}

    13 #

    14 # Check for -f option ()

    15 #

    16 if [ "$1" = -f ]; then

    17     retry_lock=1

    18     shift

    19 fi

    21 #

    22 # Detect the name of the file to edit

    23 #

    24 unset FILE

    26 if [ -n "$1" ]; then

    27     if [ -f "$1" ]; then

    28 	FILE=$1

    29     else

    30 	if [ -d "$1" ]; then

    31 	    cd $1

    32 	else

    33 	    FILE=$(package_name $1).changelog

    34 	fi

    35     fi

    36 fi

    38 if [ -z "$FILE" ]; then

    39     for f in *.changelog; do

    40 	if [ -n "$FILE" ]; then

    41 	    FILE=

    42 	    break

    43 	fi

    44 	FILE=$f

    45     done

    46 fi

    48 if [ -z "$FILE" ]; then

    49     for f in *.spec; do

    50 	if [ -n "$FILE" ]; then

    51 	    FILE=

    52 	    break

    53 	fi

    54 	FILE=$f

    55     done

    56     if [ -n "$FILE" ]; then

    57 	FILE=$(package_name $FILE).changelog

    58     fi

    59 fi

    61 if [ -z "$FILE" ]; then

    62     echo "usage: ${0##*/} [filename[.changelog]|path [file_with_comment]]"

    63     echo "If no <filename> is given, exactly one *.changelog or"

    64     echo "*.spec file has to be in the cwd or in <path>."

    65     echo

    66     exit 1

    67 fi

    69 user=`whoami`

    72 COMMENT_FILE=$2

    74 #

    75 # Create the lockfile and temporary file.

    76 #

    77 lockfile=.${FILE##*/}.lock

    78 if [ "${FILE/\//}" != "$FILE" ]; then

    79     lockfile=${FILE%/*}/.$lockfile

    80 fi

    82 if [ ! -w "$(dirname "$FILE")" ]; then

    83     echo "Write access to directory $(dirname "$FILE") required" >&2

    84     exit 1

    85 fi

    87 if [ -e "$FILE" -a ! -w "$FILE" ]; then

    88     echo "Write access to file $FILE required" >&2

    89     exit 1

    90 fi

    92 set -o noclobber

    93 while ! echo $$@$(hostname -f) 2> /dev/null > $lockfile; do

    94     if [ -z "$retry_lock" ]; then

    95 	echo "$lockfile: Lock by process $(cat $lockfile)" >&2

    96 	echo "Please remove stale lockfiles manually" >&2

    97 	exit 1

    98     fi

    99     echo "$lockfile: Waiting for process $(cat $lockfile) to release lock" >&2

   100     sleep 1

   101 done

   102 set +o noclobber

   104 tmpfile=$(mktemp /tmp/${0##*/}.XXXXXX)

   105 trap "rm -f $lockfile $tmpfile" EXIT

   107 #

   108 # Prepare the working copy and start the editor

   109 #

   111 {   timestamp=$(LC_ALL=POSIX TZ=Europe/Berlin date)

   112     echo "-------------------------------------------------------------------"

   113     echo "$timestamp - $user"

   114     echo

   115     if [ -z "$COMMENT_FILE" ]; then

   116 	echo "- "

   117     else

   118 	cat $COMMENT_FILE

   119     fi

   120     echo

   121     if [ -f "$FILE" ]; then

   122     	cat $FILE

   123     fi

   124 } >> $tmpfile \

   125 || exit 1

   127 if [ -z "$COMMENT_FILE" ]; then

   128     lines=1

   129     CHKSUM_BEFORE=$(md5sum $tmpfile | awk '{print $1}')

   130 else

   131     lines=$(wc -l $COMMENT_FILE | awk '{print $1}')

   132     CHKSUM_BEFORE=has_changed

   133 fi

   135 $EDITOR +$((3+lines)) $tmpfile

   137 if [ "$CHKSUM_BEFORE" = "$(md5sum $tmpfile | awk '{print $1}')" ]; then

   138     exit 1

   139 fi

   140 cat $tmpfile > $FILE

author	insilmaril
	Wed Mar 15 15:54:32 2006 +0000 (2006-03-15)
changeset 253	174dd40bf06a
child 612	316e9237794c
permissions	-rwxr-xr-x