Lady’s Gitweb - CGirls/blob - sh/gen-version.sh

   1 #!/bin/sh
   2 # SPDX-FileCopyrightText: 2007 Lars Hjemli <hjemli@gmail.com>
   3 # SPDX-FileCopyrightText: 2014 Fabien C <t74jgwb88tli9ch@jetable.org>
   4 # SPDX-FileCopyrightText: 2025 Lady <https://www.ladys.computer/about/#lady>
   5 # SPDX-License-Identifier: GPL-2.0-only
   6
   7 # This script is based on the one used by `cgit´ (<https://git.zx2c4.com/cgit/tree/gen-version.sh>) as of commit e8cacb5981039e7e74921659ea50e287395ed411.
   8 # It writes a line like `CGIRLS_VERSION := {VERSION}´ to a file, which can be included in a make·file to set the `CGIRLS_VERSION´ variable.
   9 # The argument gives the file to write.
  10 V="$(cat GNUmakefile | sed '/^CGIRLS_VERSION[ :=]/!d;s/^[^=]*= *//')"
  11 F="$1"
  12
  13 # Use `git describe´ to get current version if we¦re inside a git repo.
  14 if test "$(git rev-parse --git-dir 2>/dev/null)" = '.git'
  15 then
  16         V=$(git describe HEAD 2>>/dev/null || git rev-parse --short=7 HEAD 2>>/dev/null || :)
  17 fi
  18
  19 # Make the build directory if it does not exist.
  20 if test '!' -d "$(dirname $F)"
  21 then
  22         mkdir -p "$(dirname $F)"
  23         touch $F
  24 fi
  25
  26 new="CGIRLS_VERSION := $V"
  27 old="$(cat $F 2>/dev/null)"
  28
  29 # Exit if version is up·to·date.
  30 if test "$old" = "$new"
  31 then
  32         printf '%s\n' "$old"
  33         exit 0
  34 fi
  35
  36 # Update version with new version info.
  37 printf '%s\n' "$new" | tee $F