refactor: initial commit

scripts/spec-gen.sh

@@ -0,0 +1,90 @@
+#!/bin/sh
+
+## SPDX-FileCopyrightText: 2023 Benjamin Grande M. S. <ben.grande.b@gmail.com>
+##
+## SPDX-License-Identifier: AGPL-3.0-or-later
+
+set -eu
+
+usage(){
+  echo "Usage: ${0##*/} PROJECT [PROJECT ...]"
+}
+
+# get_scriptlet scriptlet-action
+# [pre|post]-[install|upgrade], [pre|post]un-[uninstall|upgrade]
+## Get scriptlet command, else fail safe.
+get_scriptlet(){
+  scriptlet="$1"
+  sed -n "/^<\!-- pkg:begin:${scriptlet} -->$/,/^<\!-- pkg:end:${scriptlet} -->$/p" "${readme}" \
+    | grep -v -e '^```\S*$' -e "^<\!-- " || echo "true"
+}
+
+get_spec(){
+  "${spec_get}" "${project}" "${1}"
+}
+
+gen_spec(){
+  project="${1}"
+
+  ## Test if a standard option works without error.
+  get_spec name >/dev/null
+
+  group="$(get_spec group)"
+  template="rpm_spec/template/template.spec"
+  target="rpm_spec/${group}-${project}.spec"
+
+  ## Escape multiline strings for sed
+  escaped_key(){
+    echo "${1}" | sed ':a;N;$!ba;s/\n/\\n  /g' | sed 's/\$/\\$/'
+  }
+
+  readme="$(get_spec readme)"
+
+  pre_install="$(escaped_key      "$(get_scriptlet pre-install)")"
+  pre_upgrade="$(escaped_key      "$(get_scriptlet pre-upgrade)")"
+  post_install="$(escaped_key     "$(get_scriptlet post-install)")"
+  post_upgrade="$(escaped_key     "$(get_scriptlet post-upgrade)")"
+  preun_uninstall="$(escaped_key  "$(get_scriptlet preun-uninstall)")"
+  preun_upgrade="$(escaped_key    "$(get_scriptlet preun-upgrade)")"
+  postun_uninstall="$(escaped_key "$(get_scriptlet postun-uninstall)")"
+  postun_upgrade="$(escaped_key   "$(get_scriptlet postun-upgrade)")"
+
+  version="$(get_spec version)"
+  changelog="$(get_spec changelog)"
+  requires="$(get_spec requires)"
+
+  sed \
+    -e "s/@PRE_INSTALL@/${pre_install}/" \
+    -e "s/@PRE_UPGRADE@/${pre_upgrade}/" \
+    -e "s/@POST_INSTALL@/${post_install}/" \
+    -e "s/@POST_UPGRADE@/${post_upgrade}/" \
+    -e "s/@PREUN_UNINSTALL@/${preun_uninstall}/" \
+    -e "s/@PREUN_UPGRADE@/${preun_upgrade}/" \
+    -e "s/@POSTUN_UNINSTALL@/${postun_uninstall}/" \
+    -e "s/@POSTUN_UPGRADE@/${postun_upgrade}/" \
+    -e "s/@VERSION@/${version}/" \
+    -e "s/@PROJECT@/${project}/" \
+    -e "/@CHANGELOG@/d" \
+    "${template}" | tee "${target}" >/dev/null
+
+  requires_key=""
+  for r in $(printf %s"${requires}" | tr " " "\n"); do
+    requires_key="${requires_key}\nRequires: ${group}-${r}"
+  done
+  sed -i "s/@REQUIRES@/${requires_key}/" "${target}" >/dev/null
+  echo "${changelog}" | tee -a "${target}" >/dev/null
+}
+
+case "${1-}" in
+  ""|-h|--?help) usage; exit 1;;
+esac
+
+command -v git >/dev/null ||
+  { printf "Missing program: git\n" >&2; exit 1; }
+cd "$(git rev-parse --show-toplevel)"
+
+spec_get="./scripts/spec-get.sh"
+
+for p in "$@"; do
+  gen_spec "${p}"
+done