command-line utility that opens a browser to the given file/directory/commit in GitHub. Now has blame command which opens github blame page.

github.sh

#!/bin/bash


function parse_git_branch {
  local branch=`cd $DIR;git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'`
  if [ "$branch" == "" ]; then
    exit 1
  else
    echo $branch
  fi
}

function parse_github_repo {
  echo `cd $DIR;git config -l | grep 'remote.origin.url' | sed -En 's/remote.origin.url=(git|https?)(@|:\/\/)github.com(:|\/)(.+)\/(.+).git/\4\/\5/p'`
}

function get_path {
  if [ -d $FILE ]; then
    FOO=`(cd $FILE; pwd)`
  else
    FOO=`(cd $DIR; pwd)`/`basename $FILE`
  fi

  PWD=`cd $DIR;cd $(git rev-parse --show-toplevel);pwd`
  LEN=${#PWD}
  LEN=$((LEN+1))

  echo ${FOO:LEN}
}

function tree_or_blob {
  if [ -d $FILE ]; then
    echo 'tree'
  else
    echo 'blob'
  fi
}


DIR='.'


if [ "blame" = "$1" ]; then
  DIR=`dirname $2`
  FILE=$(basename $2)
  URL="https://github.com/$(parse_github_repo)/blame/$(parse_git_branch)/$(get_path)"
elif [ "pr" = "$1" ]; then
  URL="https://github.com/$(parse_github_repo)/pull/new/$(parse_git_branch)"
else

  # this old way will not validate partial sha but should be much faster
  # if [ "$(git merge-base $1 $(parse_git_branch) )" = "$1" ]; then

  # if no argument is passed in, assuming we want the latest commit
  if [ "" = "$1" ]; then
    sha=`git rev-parse --verify HEAD`
  else
    sha=`git rev-list $1 2>/dev/null | grep $1`
  fi


  if [ $sha ]; then
    URL="https://github.com/`parse_github_repo`/commit/$sha"
  else
    FILE=$1
    if [ -d $FILE ]; then
      DIR=$FILE
    else
      DIR=`dirname $FILE`
    fi
    URL="https://github.com/$(parse_github_repo)/$(tree_or_blob)/$(parse_git_branch)/$(get_path)"
  fi
fi

echo $URL | pbcopy
if [ "`which gnome-www-browser`" != "" ]; then
  gnome-www-browser $URL
else
  open $URL
fi