Respect ECLASSDIR in keyword-generation.sh

* keyword-generation.sh: The eclass directory can now be specified
with the ECLASSDIR variable. Better error checking and reporting.
* Makefile (keywords): New target.

Signed-off-by: Ulrich Müller <ulm@gentoo.org>

1 files changed, 27 insertions, 11 deletions

diff --git a/keyword-generation.sh b/keyword-generation.sh
index 2c288c5..112aaa7 100755
--- a/keyword-generation.sh
+++ b/keyword-generation.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# Copyright 2011-2020 Gentoo Authors
+# Copyright 2011-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2 or later
 
 # Authors:
@@ -9,12 +9,25 @@
 # Generate a raw list for app-emacs/ebuild-mode
 
 REPO=gentoo
-TMPFILE="$(mktemp ${TMPDIR:-/tmp}/keyword-generation.XXXXXX)"
-ECLASSES=( $(portageq available_eclasses / ${REPO} | LC_ALL=C sort) )
-ECLASSFILES=( $(portageq eclass_path / ${REPO} "${ECLASSES[@]}") )
 # Obsolete eclasses
 OBSOLETE=""
 
+TMPFILE="$(mktemp ${TMPDIR:-/tmp}/keyword-generation.XXXXXX)"
+
+if [[ -n ${ECLASSDIR} ]]; then
+    echo "ECLASSDIR = ${ECLASSDIR}" >&2
+    ECLASSES=( "${ECLASSDIR}"/*.eclass )
+    # We need to strip to the basename, for correct sort order
+    ECLASSES=( "${ECLASSES[@]#"${ECLASSDIR}/"}" )
+    ECLASSES=( $(printf "%s\n" "${ECLASSES[@]%.eclass}" | LC_ALL=C sort) )
+    ECLASSFILES=( "${ECLASSES[@]/%/.eclass}" )
+    ECLASSFILES=( "${ECLASSFILES[@]/#/"${ECLASSDIR}/"}" )
+else
+    echo "No ECLASSDIR specified - using portageq eclass_path" >&2
+    ECLASSES=( $(portageq available_eclasses / ${REPO} | LC_ALL=C sort) )
+    ECLASSFILES=( $(portageq eclass_path / ${REPO} "${ECLASSES[@]}") )
+fi
+
 # Arrays should have equal size
 [[ ${#ECLASSES[@]} -eq ${#ECLASSFILES[@]} ]] || exit 1
 
@@ -29,9 +42,10 @@ has() {
 
 for (( i = 0; i < ${#ECLASSES[@]}; i++ )); do
     eclass=${ECLASSES[i]}
-    has ${eclass} ${OBSOLETE} && continue
     file=${ECLASSFILES[i]}
-    grep -q "^# @DEAD$" "${file}" && continue
+    echo -n "  ${eclass} ... " >&2
+    grep -q "^# @DEAD$" "${file}" && { echo "skip (dead)" >&2; continue; }
+    has ${eclass} ${OBSOLETE} && { echo "skip (obsolete)" >&2; continue; }
 
     # Get list of functions defined in eclass
     fn_all=$(env -i bash -c ". ${file}; declare -F" 2>/dev/null \
@@ -42,7 +56,7 @@ for (( i = 0; i < ${#ECLASSES[@]}; i++ )); do
         s/^# @[^:]*:[[:space:]]*//;p};/^# @/bx}' "${file}")
 
     functions=$(echo "${fn_all}" | grep -v '^_' | grep -Fvx "${fn_internal}")
-    [[ -z ${functions} ]] && continue
+    [[ -z ${functions} ]] && { echo "warning (no functions)" >&2; continue; }
 
     {
         echo "(defvar ebuild-mode-keywords-${eclass%.eclass}"
@@ -50,9 +64,10 @@ for (( i = 0; i < ${#ECLASSES[@]}; i++ )); do
         echo "    font-lock-type-face))"
         echo
     } >>"${TMPFILE}"
+    echo "ok" >&2
 done
 
-emacs -q --batch \
+emacs -q --no-site-file --batch \
     --visit "${TMPFILE}" \
     --eval "(emacs-lisp-mode)" \
     --eval "(indent-region (point-min) (point-max))" \
@@ -60,9 +75,10 @@ emacs -q --batch \
                   (fill-indent-according-to-mode t)
                   (paragraph-start \"^.\"))
               (fill-region (point-min) (point-max)))" \
-    --eval "(save-buffer)" --kill
+    --eval "(save-buffer)" --kill || exit 1
 
 sed -i -e "/@@KEYWORDS-BEGIN@@/,/@@KEYWORDS-END@@/{//!d}
-/@@KEYWORDS-BEGIN@@/r${TMPFILE}" ebuild-mode-keywords.el
+/@@KEYWORDS-BEGIN@@/r${TMPFILE}" ebuild-mode-keywords.el || exit 1
 
-rm "${TMPFILE}"
+rm -f "${TMPFILE}"
+exit