rpkg.macros

#!/bin/bash

# backward compat since cached function went away
# https://pagure.io/rpkg-util/c/bb62554c62fd52224709e861c2353a5c15b50220?branch=master
function cached {
  declare v=${OUTPUT[$1]}
  [[ -n $v ]] && echo -n "$v"
}

function get_cmake_var {
  declare v
  v=$(grep -m1 "^set($1\\s" <CMakeLists.txt)
  v=$(sed -E 's/^\S+\s+"?//; s/[")].*//' <<<"$v")
  [[ -n $v ]] && echo "$v" || abort "can't get $1"
}

function neovim_dev_version {
  cached neovim_dev_version && return

  declare major minor patch pre
  major=$(get_cmake_var NVIM_VERSION_MAJOR) || exit
  minor=$(get_cmake_var NVIM_VERSION_MINOR) || exit
  patch=$(get_cmake_var NVIM_VERSION_PATCH) || exit
  pre=$(get_cmake_var NVIM_VERSION_PRERELEASE) || exit

  # git describe --first-parent origin/master
  # v0.4.0-1080-g971e0ca90
  declare describe tag commits hash
  describe=$(git describe --first-parent --long origin/master)
  read tag commits hash <<<"${describe//-/ }"
  [[ $tag == v* && $commits =~ ^[0-9]+$ && -n $hash ]] || abort "failed git describe"

  output "v$major.$minor.$patch$pre+$commits-$hash"
}

function git_version {
  cached git_version && return

  neovim_dev_version &>/dev/null # preload cache w/o command subst

  declare v
  v=$(neovim_dev_version) # v0.5.0-dev+1080-g971e0ca90
  v=${v#v}                # 0.5.0-dev+1080-g971e0ca90
  v=${v/-/\~}             # 0.5.0~dev+1080-g971e0ca90
  v=${v//[+-]/.}          # 0.5.0~dev.1080.g971e0ca90

  output "$v"
}

function git_revision {
  cached git_revision && return

  # find last merge
  declare last_merge rest
  read last_merge rest <<<"$(git log --merges --oneline -n1)"
  [[ -n $last_merge ]] || abort "failed to find last merge"

  # count commits since last merge, might be zero
  declare count
  count=$(git log --oneline HEAD "^$last_merge" | wc -l)

  output "$((count + 1))"
}

function git_changelog_date {
  cached git_changelog_date && return
  output "$(date +'%a %b %d %Y')"
}

function git_changelog_version {
  cached git_changelog_version && return
  git_version &>/dev/null  # cache
  git_revision &>/dev/null # cache
  output "$(git_version)-$(git_revision)"
}

function abort {
  echo "ABORT: $*" >&2
  exit 1
}