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January 12, 2015 19:18
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| # resolve_path from here https://github.com/keen99/shell-functions/tree/master/resolve_path | |
| resolve_path() { | |
| #I'm bash only, please! | |
| # usage: resolve_path <a file or directory> | |
| # follows symlinks and relative paths, returns a full real path | |
| # | |
| local owd="$PWD" | |
| #echo "$FUNCNAME for $1" >&2 | |
| local opath="$1" | |
| local npath="" | |
| local obase=$(basename "$opath") | |
| local odir=$(dirname "$opath") | |
| if [[ -L "$opath" ]] | |
| then | |
| #it's a link. | |
| #file or directory, we want to cd into it's dir | |
| cd $odir | |
| #then extract where the link points. | |
| npath=$(readlink "$obase") | |
| #have to -L BEFORE we -f, because -f includes -L :( | |
| if [[ -L $npath ]] | |
| then | |
| #the link points to another symlink, so go follow that. | |
| resolve_path "$npath" | |
| #and finish out early, we're done. | |
| return $? | |
| #done | |
| elif [[ -f $npath ]] | |
| #the link points to a file. | |
| then | |
| #get the dir for the new file | |
| nbase=$(basename $npath) | |
| npath=$(dirname $npath) | |
| cd "$npath" | |
| ndir=$(pwd -P) | |
| retval=0 | |
| #done | |
| elif [[ -d $npath ]] | |
| then | |
| #the link points to a directory. | |
| cd "$npath" | |
| ndir=$(pwd -P) | |
| retval=0 | |
| #done | |
| else | |
| echo "$FUNCNAME: ERROR: unknown condition inside link!!" >&2 | |
| echo "opath [[ $opath ]]" >&2 | |
| echo "npath [[ $npath ]]" >&2 | |
| return 1 | |
| fi | |
| else | |
| if ! [[ -e "$opath" ]] | |
| then | |
| echo "$FUNCNAME: $opath: No such file or directory" >&2 | |
| return 1 | |
| #and break early | |
| elif [[ -d "$opath" ]] | |
| then | |
| cd "$opath" | |
| ndir=$(pwd -P) | |
| retval=0 | |
| #done | |
| elif [[ -f "$opath" ]] | |
| then | |
| cd $odir | |
| ndir=$(pwd -P) | |
| nbase=$(basename "$opath") | |
| retval=0 | |
| #done | |
| else | |
| echo "$FUNCNAME: ERROR: unknown condition outside link!!" >&2 | |
| echo "opath [[ $opath ]]" >&2 | |
| return 1 | |
| fi | |
| fi | |
| #now assemble our output | |
| echo -n "$ndir" | |
| if [[ "x${nbase:=}" != "x" ]] | |
| then | |
| echo "/$nbase" | |
| else | |
| echo | |
| fi | |
| #now return to where we were | |
| cd "$owd" | |
| return $retval | |
| } | |
| #======================================================================= | |
| # Git-ified prompt {{{ | |
| #======================================================================= | |
| default_prompt="\u@\h:\w ${vcs_info_msg_0_}> " | |
| function prompt_setup() { | |
| local git_branch=$(parse_git_branch) | |
| local gitcolor gitcolor_new gitcolor_old reset | |
| reset='\e[0m' | |
| if [[ -n "$git_branch" ]]; then | |
| git_clean_p | |
| if [[ $? == 0 ]]; then | |
| if [[ "$git_branch" == "master" ]]; then | |
| gitcolor='\e[1;33m' # Yellow | |
| else | |
| gitcolor='\e[1;32m' # Green | |
| fi | |
| else | |
| gitcolor='\e[1;31m' # Red | |
| fi | |
| PS1="$(path_within_git_repo):$gitcolor$git_branch$reset> " | |
| else | |
| PS1=$default_prompt | |
| fi | |
| } | |
| function parse_git_branch () | |
| { | |
| local ref=$(git symbolic-ref HEAD 2> /dev/null) || return 1 | |
| echo ${ref#refs/heads/} | |
| } | |
| function path_within_git_repo () | |
| { | |
| local repo_base=$(resolve_path $( git rev-parse --git-dir )) | |
| local repo_parent=$(dirname $(dirname ${repo_base})) | |
| echo ${PWD##$repo_parent/} | |
| } | |
| # Exit value of 0 if the repo is clean, 1 otherwise | |
| function git_clean_p () | |
| { | |
| git status 2> /dev/null | fgrep 'working directory clean' > /dev/null | |
| } | |
| PROMPT_COMMAND=prompt_setup | |
| # }}} | |
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