#!/bin/sh
+# Copyright 2022 - 2023 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
. "$_EXEC/cgilite/cgilite.sh"
. "$_EXEC/tools.sh"
. "$_EXEC/acl.sh"
-page="$1"
+_(){ printf %s\\n "$*"; }
+[ "${LANGUAGE}" -a -r "${_EXEC}/l10n/${LANGUAGE}.sh" ] && . "${_EXEC}/l10n/${LANGUAGE}.sh"
+
+LIST=true DIFF=
+while [ $# -gt 0 ]; do case $1 in
+ --list)
+ LIST=true
+ shift 1
+ ;;
+ --no-list)
+ LIST=
+ shift 1
+ ;;
+ --diff)
+ DIFF=true
+ shift 1
+ ;;
+ --no-diff)
+ DIFF=
+ shift 1
+ ;;
+ *)page="$1"
+ shift 1
+ ;;
+esac; done
+
page_abs="$(page_abs "$page")"
+page_default="${page_abs%:*/}"
if ! acl_read "$page_abs"; then
return 0
-elif [ ! "$(which git)" ]; then
- printf '<div class="macro revisions error">GIT is not available to handle revisioning.</div>'
fi
-printf '<ul class="macro revisions">\n'
+printf '<div class="macro revisions">\n'
+
+if [ "$REV_PAGES" != true ]; then
+ printf '<div class="error">%s</div>' "$(_ GIT is not available to handle revisioning.)"
+ exit 1
+fi
+
+if [ "$LIST" = true ]; then
+ printf '<ul>\n'
IFS=" "
{ git -C "$_DATA" log --date=format:"%a, %x %H:%M" \
--pretty=format:"%h %cd %s" \
printf '<li><span class="hash"><a href="%s">%s</a></span><span class="date">%s</span><span class="user">%s</span></li>\n' \
"$(HTML "${page%/}/[revision]/$hash")" "$(HTML "$hash")" "$(HTML "$date")" "$(HTML "$user")"
done
-printf '</ul>\n'
+ printf '</ul>\n'
+fi
+
+if [ "$DIFF" = true -a "$LANGUAGE_DEFAULT" -a "$page_default" != "$page_abs" ]; then
+ commit="$(git -C "$_DATA" log --pretty=format:%H -- "pages${page_abs}#page.md" |head -n1)"
+ printf '<section class="diff"><h2>%s</h2>' "$(_ 'Latest changes to the original language page')"
+ git -C "$_DATA" diff -U3 "$commit" -- "pages${page_default}#page.md" |tail -n+5 \
+ | while read -r diff; do case $diff in
+ @@\ *\ @@*)
+ line="${diff#@@ * @@}"
+ num="${diff%"${line}"}"
+ printf '<span class="linenum">%s</span>\n' "$(HTML "$num")"
+ printf '<span class="line">%s</span>\n' "$(HTML "$line")"
+ ;;
+ -*) printf '<span class="linedel">%s</span>\n' "$(HTML "$diff")";;
+ +*) printf '<span class="lineadd">%s</span>\n' "$(HTML "$diff")";;
+ \ *) printf '<span class="line">%s</span>\n' "$(HTML "$diff")";;
+ \\\ *) printf '<span class="linenote">%s</span>\n' "$(HTML "$diff")";;
+ esac; done
+ printf '</section>'
+fi
+
+printf '</div>\n'