github-url

#!/bin/bash
# Show github URL for a given file

if [ $# -ne 1 ]; then
    echo "usage: $(basename $0) FILENAME"
    exit 1
fi

if [ ! -e $1 ]; then
    echo "error: can't find $1"
    exit 1
fi

if [ -d $1 ]; then
    cd $1
    dest=.
else
    cd $(dirname $1)
    dest=$(basename $1)
fi

url=$(git config remote.origin.url | cut -d: -f2)
if [ $? -ne 0 ]; then
    echo "error: can't get remote url"
    exit 1
fi
url=${url/.git/}

path=$(git ls-files --full-name $dest | head -1)
if [ $? -ne 0 ]; then
    echo "error: git does not know about $1"
    exit 1
fi

branch=$(git branch --no-color 2>/dev/null | grep '^* ' | sed 's/* //')
prefix="https://github.com/$url"
if [ "$dest" == "." ]; then
    path=$(dirname $path)
    url="${prefix}/tree/${branch}/$path"
else
    url="${prefix}/blob/${branch}/$path"
fi

echo $url