p4blame.sh #3

#!/bin/sh
#
# Show line authors of a file
# P4 environment variables should be set up already

if [ $# -eq 0 ]
then
    echo "Usage: p4blame.sh [file]"
    exit 1
fi

check_length()
{
    pad_length=0
    truncate_length=0
    if [ ${#1} -lt $max_length ]
    then
        pad_length=`expr $max_length - ${#1}`
    fi
    if [ ${#1} -gt $max_length ]
    then
        truncate_length=`expr ${#1} - $max_length`
    fi
}

pad()
{
    i=0
    padding=""    
    while [ $i -lt $pad_length ]
    do
        padding=${padding}" " 
        i=$[i+1]
    done
}

max_length=15
tmpfile=/tmp/content.txt
p4 annotate -cq $1 > $tmpfile
changes=$(cat $tmpfile | awk '{print substr($1, 0, length($1)-1); }' | sort -u)
for change in $changes
do
    author=$(p4 -ztag describe $change | grep user | awk '{print $3}')
    check_length $author
    if [ $truncate_length -eq 0 ]
    then
        pad
        sed -i "s/${change}:/${author}:${padding}/g" $tmpfile
    fi
    if [ $pad_length -eq 0 ]
    then
        author=$(echo $author $truncate_length | awk '{print substr($1, 0, length($1)-$2); }')
        sed -i "s/${change}:/${author}:/g" $tmpfile
    fi
done

cat $tmpfile