prevent double escape in page title

[shellwiki] / tools.sh

diff --git a/tools.sh b/tools.sh
index a298394c9cf5881cb4a764587302fe4467030d67..2ee1818f569685c8bd848ba2e7e9fe01bb6d0626 100755 (executable)
--- a/tools.sh
+++ b/tools.sh
@@ -185,3 +185,41 @@ has_tag() {
   done
   return 1
 }
+
+page_title() {
+  local mdfile PAGE_TITLE
+
+  if ! mdfile="$(mdfile "${1:-${PATH_INFO%/*}}")"; then
+    return 1
+  fi
+  PAGE_TITLE="$(
+    # pick title from %title pragma
+    sed -nE '
+      s;^%title[ \t]+([[:graph:]][[:print:]]+)\r?$;\1;p; tQ;
+      b; :Q q;
+    ' "$mdfile"
+  )"
+  [ ! "${PAGE_TITLE}" ] && PAGE_TITLE="$(
+    # pick title from first h1/h2 headline
+    MD_MACROS="" md <"$mdfile" \
+    | sed -nE '
+      s;^.*<h1[^>]*>(.*>)?([^<]+)(<.*)?</h1>.*$;\2;; tQ;
+      s;^.*<h2[^>]*>(.*>)?([^<]+)(<.*)?</h2>.*$;\2;; tQ;
+      b; :Q
+      # reverse escapes of cgilite HTML function,
+      # to prevent later double escaping
+      # later escaping must not be omited
+      s/&lt;/</g; s/&gt;/>/g;  s/&quot;/'\"'/g; s/&#x27;/'\''/g;
+      s/&#x5B;/[/g; s/&#x5D;/]/g;  s/&#x0D;/\r/g; s/&amp;/\&/g;
+      p; q;
+    '
+  )"
+  if [ ! "${PAGE_TITLE}" ]; then
+    # use last part of page URL as title
+    PAGE_TITLE="${1:-${PATH_INFO}}"
+    PAGE_TITLE="${PAGE_TITLE%/*}"
+    PAGE_TITLE="${PAGE_TITLE##*/}"
+  fi
+  debug "TITLE: $PAGE_TITLE"
+  printf %s\\n "$PAGE_TITLE"
+}