git-browse-help.sh

   1 #!/bin/sh
   2 #
   3 # This program launch a web browser on the html page
   4 # describing a git command.
   5 #
   6 # Copyright (c) 2007 Christian Couder
   7 # Copyright (c) 2006 Theodore Y. Ts'o
   8 #
   9 # This file is heavily stolen from git-mergetool.sh, by
  10 # Theodore Y. Ts'o (thanks) that is:
  11 #
  12 # Copyright (c) 2006 Theodore Y. Ts'o
  13 #
  14 # This file is licensed under the GPL v2, or a later version
  15 # at the discretion of Junio C Hamano or any other official
  16 # git maintainer.
  17 #
  18
  19 USAGE='[--browser=browser|--tool=browser] [cmd to display] ...'
  20 SUBDIRECTORY_OK=Yes
  21 OPTIONS_SPEC=
  22 . git-sh-setup
  23
  24 # Install data.
  25 html_dir="@@HTMLDIR@@"
  26
  27 test -f "$html_dir/git.html" || die "No documentation directory found."
  28
  29 valid_tool() {
  30         case "$1" in
  31                 firefox | iceweasel | konqueror | w3m | links | lynx | dillo)
  32                         ;; # happy
  33                 *)
  34                         return 1
  35                         ;;
  36         esac
  37 }
  38
  39 init_browser_path() {
  40         browser_path=`git config browser.$1.path`
  41         test -z "$browser_path" && browser_path=$1
  42 }
  43
  44 while test $# != 0
  45 do
  46     case "$1" in
  47         -b|--browser*|-t|--tool*)
  48             case "$#,$1" in
  49                 *,*=*)
  50                     browser=`expr "z$1" : 'z-[^=]*=\(.*\)'`
  51                     ;;
  52                 1,*)
  53                     usage ;;
  54                 *)
  55                     browser="$2"
  56                     shift ;;
  57             esac
  58             ;;
  59         --)
  60             break
  61             ;;
  62         -*)
  63             usage
  64             ;;
  65         *)
  66             break
  67             ;;
  68     esac
  69     shift
  70 done
  71
  72 if test -z "$browser"; then
  73     for opt in "help.browser" "web.browser"
  74     do
  75         browser="`git config $opt`"
  76         test -z "$browser" || break
  77     done
  78     if test -n "$browser" && ! valid_tool "$browser"; then
  79             echo >&2 "git config option $opt set to unknown browser: $browser"
  80             echo >&2 "Resetting to default..."
  81             unset browser
  82     fi
  83 fi
  84
  85 if test -z "$browser" ; then
  86     if test -n "$DISPLAY"; then
  87         browser_candidates="firefox iceweasel konqueror w3m links lynx dillo"
  88         if test "$KDE_FULL_SESSION" = "true"; then
  89             browser_candidates="konqueror $browser_candidates"
  90         fi
  91     else
  92         browser_candidates="w3m links lynx"
  93     fi
  94     echo "browser candidates: $browser_candidates"
  95     for i in $browser_candidates; do
  96         init_browser_path $i
  97         if type "$browser_path" > /dev/null 2>&1; then
  98             browser=$i
  99             break
 100         fi
 101     done
 102     test -z "$browser" && die "No known browser available."
 103 else
 104     valid_tool "$browser" || die "Unknown browser '$browser'."
 105
 106     init_browser_path "$browser"
 107
 108     if ! type "$browser_path" > /dev/null 2>&1; then
 109         die "The browser $browser is not available as '$browser_path'."
 110     fi
 111 fi
 112
 113 pages=$(for p in "$@"; do echo "$html_dir/$p.html" ; done)
 114 test -z "$pages" && pages="$html_dir/git.html"
 115
 116 case "$browser" in
 117     firefox|iceweasel)
 118         # Check version because firefox < 2.0 does not support "-new-tab".
 119         vers=$(expr "$($browser_path -version)" : '.* \([0-9][0-9]*\)\..*')
 120         NEWTAB='-new-tab'
 121         test "$vers" -lt 2 && NEWTAB=''
 122         nohup "$browser_path" $NEWTAB $pages &
 123         ;;
 124     konqueror)
 125         case "$(basename "$browser_path")" in
 126             konqueror)
 127                 # It's simpler to use kfmclient to open a new tab in konqueror.
 128                 browser_path="$(echo "$browser_path" | sed -e 's/konqueror$/kfmclient/')"
 129                 type "$browser_path" > /dev/null 2>&1 || die "No '$browser_path' found."
 130                 eval "$browser_path" newTab $pages
 131                 ;;
 132             kfmclient)
 133                 eval "$browser_path" newTab $pages
 134                 ;;
 135             *)
 136                 nohup "$browser_path" $pages &
 137                 ;;
 138         esac
 139         ;;
 140     w3m|links|lynx)
 141         eval "$browser_path" $pages
 142         ;;
 143     dillo)
 144         nohup "$browser_path" $pages &
 145         ;;
 146 esac