tg-checkout.sh

   1 #!/bin/sh
   2 # TopGit - A different patch queue manager
   3 # Copyright (C) 2013 Per Cederqvist <ceder@lysator.liu.se>
   4 # Copyright (C) 2015,2017 Kyle J. McKay <mackyle@gmail.com>
   5 # All rights reserved.
   6 # GPLv2
   7
   8 ## Parse options
   9
  10 USAGE="\
  11 Usage: ${tgname:-tg} [...] checkout [--iow] [-f] [-b <branch>] (next | prev) [<steps>]
  12    Or: ${tgname:-tg} [...] checkout [--iow] [-f] (next | prev) -a
  13    Or: ${tgname:-tg} [...] checkout [--iow] [-f] [goto] [--] <pattern> | --series[=<head>]"
  14
  15 usage()
  16 {
  17         [ -z "$2" ] || printf '%s\n' "$2" >&2
  18         if [ "${1:-0}" != 0 ]; then
  19                 printf '%s\n' "$USAGE" >&2
  20         else
  21                 printf '%s\n' "$USAGE"
  22         fi
  23         exit ${1:-0}
  24 }
  25
  26 # Parse options
  27
  28 branch=         # -b value
  29 iowoptval=      # "" or "$iowopt"
  30 forceval=       # "" or "-f"
  31 dashdash=       # "" or "1" if [goto] "--" [--series[=<head>]] seen
  32
  33 while [ $# -gt 0 ]; do case "$1" in
  34         -h|--help)
  35                 usage
  36                 ;;
  37         -f|--force)
  38                 forceval="-f"
  39                 ;;
  40         --ignore-other-worktrees|--iow)
  41                 iowoptval="$iowopt"
  42                 ;;
  43         --branch=*)
  44                 branch="${1#--branch=}"
  45                 [ -n "$branch" ] || usage 1 "--branch= requires a branch name"
  46                 ;;
  47         --branch|-b)
  48                 [ $# -ge 2 ] || usage 1 "$1 requires an argument"
  49                 branch="$2"
  50                 [ -n "$branch" ] || usage 1 "$1 requires a branch name"
  51                 shift
  52                 ;;
  53         --series|--series=*)
  54                 dashdash=1
  55                 break
  56                 ;;
  57         --|goto)
  58                 [ "$1" != "goto" ] || [ "$2" != "--" ] || shift
  59                 shift
  60                 dashdash=1
  61                 break
  62                 ;;
  63         -?*)
  64                 usage 1 "Unknown option: $1"
  65                 ;;
  66         *)
  67                 break
  68                 ;;
  69 esac; shift; done
  70 [ $# -ne 0 ] || [ -n "$dashdash" ] || set -- "next" # deprecated "next" alias
  71 [ $# -gt 0 ] || usage 1
  72 [ -n "$dashdash" ] ||
  73 case "$1" in
  74         n|next|push|child)              shift;;
  75         p|prev|previous|pop|parent|..)  reverse=1; shift;;
  76         -*)                             usage 1;;
  77         *)                              dashdash=1;;
  78 esac
  79
  80 choices="$(get_temp choices)"
  81 desc=
  82
  83 if [ -n "$dashdash" ]; then
  84         [ $# -eq 1 ] || usage 1 "goto mode requires exactly one pattern"
  85         pattern="$1"
  86         [ -n "$pattern" ] || usage 1 "goto mode requires a non-empty pattern"
  87         case "$pattern" in
  88                 --series|--series=*)
  89                         tg --no-pager info "$pattern" "${branch:-HEAD}" >"$choices" || exit
  90                         desc=1
  91                         ;;
  92                 *)
  93                         [ -z "$branch" ] || usage 1 "--branch not allowed in goto <pattern> mode"
  94                         tg --no-pager summary --list | grep -e "$pattern" >"$choices" || :
  95                         no_branch_found="No topic branch matches grep pattern '$pattern'"
  96                         ;;
  97         esac
  98 else
  99         [ $# -gt 0 ] || set -- "1"
 100         [ $# -eq 1 ] || usage 1 "next/previos permits no more than one argument"
 101         case "$1" in
 102                 -a|--all)
 103                         [ -z "$branch" ] || usage 1 "--branch not allowed in --all mode"
 104                         navigate_deps -t -s=-1 ${reverse:+-r} >"$choices"
 105                         no_branch_found="No TopGit branches found at all!"
 106                         ;;
 107                 [1-9]*)
 108                         [ "$1" = "${1%%[!0-9]*}" ] || usage 1 "invalid next/previous step count"
 109                         v_verify_topgit_branch branch "${branch:-HEAD}"
 110                         navigate_deps -t -s="$1" ${reverse:+-r} "$branch" >"$choices" || exit
 111                         pl="s" dir="next"
 112                         [ "$steps" != 1 ] || pl=
 113                         [ -z "$reverse" ] || dir="previous"
 114                         no_branch_found="No $dir TopGit branch(es) found $steps$pl away"
 115                         ;;
 116                 *)
 117                         usage 1 "invalid next/previous movement; must be --all or positive number"
 118                         ;;
 119         esac
 120 fi
 121
 122 cnt=$(( $(wc -l <"$choices") ))
 123 [ $cnt -gt 0 ] || die "$no_branch_found"
 124
 125 if [ $cnt -eq 1 ]; then
 126         read -r choice <"$choices" || :
 127         choice="${choice%%[ $tab]*}"
 128         [ -n "$choice" ] || die "$no_branch_found"
 129 else
 130         echo "Please select one of the following topic branches:"
 131         awk -v "desc=$desc" <"$choices" '
 132         BEGIN { colcount = 0 }
 133         function cols() {
 134                 if (colcount) return colcount
 135                 sizer = "exec stty size 0>&2 2>/dev/null"
 136                 info = ""
 137                 sizer | getline info
 138                 close sizer
 139                 colcount = 0
 140                 if (split(info, nums, " ") >= 2 && nums[2] ~ /^[1-9][0-9]*$/)
 141                         colcount = 0 + nums[2]
 142                 if (!colcount) colcount = 80
 143                 return colcount
 144         }
 145         {
 146                 if ($0 ~ /^[* ] /) {
 147                         mark = substr($0, 1, 2)
 148                         names = substr($0, 3)
 149                 } else {
 150                         mark = ""
 151                         names = $0
 152                 }
 153                 cnt = split(names, name, " ")
 154                 if (!cnt) next
 155                 annotation = ""
 156                 if (cnt > 1) {
 157                         if (desc) {
 158                                 annotation = names
 159                                 sub(/^[ \t]+/, "", annotation)
 160                                 sub(/^[^ \t]+[ \t]+/, "", annotation)
 161                                 sub(/[ \t]+$/, "", annotation)
 162                                 if (annotation != "") annotation = " " annotation
 163                         } else {
 164                                 for (i = 2; i <= cnt; ++i) {
 165                                         annotation = annotation ", " name[i]
 166                                 }
 167                                 annotation = " [" substr(annotation, 3) "]"
 168                         }
 169                 }
 170                 if (desc)
 171                         line = sprintf("%-39s%s", sprintf("%6d  %s%s", NR, mark, name[1]), annotation)
 172                 else
 173                         line = sprintf("%6d  %s%s%s", NR, mark, name[1], annotation)
 174                 printf "%.*s\n", cols() - 1, line
 175         }'
 176         printf '%s' "Input the number: "
 177         read -r n
 178         [ -n "$n" ] && [ "$n" = "${n%%[!0-9]*}" ] || die "Bad input"
 179         [ $n -ge 1 ] && [ $n -le $cnt ] || die "Input out of range"
 180         choice="$(sed -n ${n}p <"$choices")" || :
 181         case "$choice" in "* "*|"  "*) choice="${choice#??}"; esac
 182         choice="${choice%%[ $tab]*}"
 183         [ -n "$choice" ] || die "Bad input"
 184 fi
 185 git checkout $iowoptval $forceval "$choice" --