Added hashcache

This will be used to generate links to previous commits (to avoid putting full URLs in the articles themselves)
2013-03-05 23:41:27 -05:00 · 2013-03-05 23:41:27 -05:00 · 3c06dfc763
parent 8ac9aa9531
commit 3c06dfc763
2 changed files with 75 additions and 1 deletions
--- a/68
+++ b/68
@ -0,0 +1,68 @@
+#!/bin/bash
+#
+# Hash cache storage and retrieval operations
+#
+#  Copyright (C) 2012  Mike Gerwitz
+#
+#  This file is part of repo2html.
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# #
+
+# intended to be configured from a configuration file; lowercase to help
+# mitigate global env var conflicts
+cachefile="${hashcache:-.hashcache}"
+
+# 'cause it rhymes and 'cause it's useful
+_cache()
+{
+  hash="$1"
+  value="$2"
+
+  echo "$hash $value" >>"$cachefile"
+}
+
+# retrieves the value associated with the given hash
+_retrieve()
+{
+  hash="$1"
+
+  # if multiple identical hashes exist, then the last one takes precedence
+  # (ideally, such a thing should never happen, but it's best to be prepared)
+  grep "^$hash " "$cachefile" \
+    | tail -n1 \
+    | cut -d' ' -f2-
+}
+
+# clears the cache file
+_wipe()
+{
+  >"$cachefile"
+}
+
+
+# the hash is required, but the value to set it to is optional
+hash="${1?No hash provided}"
+set="$2"
+
+# poor man's argument parsing (we don't need no stinkin' options [yet]); "clear"
+# is not a valid hash currently, though I suppose a sadistic repository could
+# allow such, and we're supposed to be repo-agnostic
+if [ "$hash" == 'clear' ]; then
+  _wipe
+elif [ "$set" ]; then
+  _cache "$hash" "$set"
+else
+  _retrieve "$hash"
+fi
--- a/8
+++ b/8
@ -26,6 +26,11 @@ path_out="${2?Missing output path}"
 # provide default message formatter if necessary
 msgfmt="${msgfmt:-./msgfmt}"

+# clear the cachefile
+./hashcache clear
+
+
+# output XHTML5 header
 cat <<EOH
  <!DOCTYPE html>
  <html>
@ -93,7 +98,8 @@ while read hash commit ts id subject; do

      # invoke template
      "$repotype"/commit2html "$commit" | ./tpl/commit.sh
-    ) > "$path_out/$pagefile"
+    ) > "$path_out/$pagefile" \
+    && ./hashcache "$hash" "$pagefile"
 done

 yearrange="$firstyear"