Re-write date handling, remove dependency on filesystem lastmod dates.

[redo-blog] / processor / helpers.sh

diff --git a/processor/helpers.sh b/processor/helpers.sh
index cc12358cdd1618c3b6c27f0fdbe2a1b26091af72..64d1123ce89e73ad080cd7a9b614d33266325178 100644 (file)
--- a/processor/helpers.sh
+++ b/processor/helpers.sh
@@ -6,29 +6,51 @@ escape_html() {
 }
 
 read_and_escape_file() {
-  in=`cat "$1"`
+  in=$(cat "$1")
   escape_html "$in"
 }
 
+get_uuid_from_meta_file() {
+  probable_uuid=$(cat "$1" | head -1)
+  if printf "$probable_uuid" | grep -Eq "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$"; then
+    printf "$probable_uuid"
+  else
+    echo "Malformed UUID in meta file." >&2
+    exit 1
+  fi
+}
+
+get_creation_date_from_meta_file_seconds() {
+  cat "$1" | sed -n '2p' | cut -d'_' -f1
+}
+
+get_creation_date_from_meta_file_nanoseconds() {
+  cat "$1" | sed -n '2p'
+}
+
+get_lastmod_date_from_meta_file() {
+  cat "$1" | sed -n '4p'
+}
+
 escape_url() {
   out=`python3 -c 'import sys, urllib.parse; print(urllib.parse.quote(sys.argv[1]))' "$1"`
   printf "%s" "$out"
 }
 
 get_basepath() {
-  url_file=url.meta
+  url_file="$1"url
   redo-ifchange "$url_file"
   base_url=`cat "$url_file" | head -1`
   url_protocol=`echo $base_url | cut -d ':' -f 1`
   url_basepath=`echo $base_url | cut -d '/' -f 3-`
   url_basepath_escaped=`escape_url "$url_basepath"`
   basepath="$url_protocol""://""$url_basepath_escaped"
-  echo "$basepath"
+  printf "%s" "$basepath"
 }
 
 get_source_file() {
-  md_file="${1%.*}.md"
-  rst_file="${1%.*}.rst"
+  md_file="../${1%.*}.md"
+  rst_file="../${1%.*}.rst"
   if [ -f "$rst_file" ]; then
     src_file="$rst_file"
   elif [ -f "$md_file" ]; then
@@ -37,5 +59,15 @@ get_source_file() {
     exit 1
   fi
   redo-ifchange "$src_file"
-  printf "$src_file"
+  printf "%s" "$src_file"
+}
+
+prep_sed () {
+  # Escape characters that confuse sed in a replacement string. Also replace
+  # occurences of % (which the templating uses as a variable marker) with
+  # non-printable placeholder \a (clear input of it first), to be replaced by
+  # % again when the templating has finished (so that no replacement string gets
+  # interpreted by the templating).
+  sedsafe_pattern='s/\\/\\\\/g; s/\//\\\//g; s/&/\\\&/g; $!s/$/\\/g; '
+  sed "$sedsafe_pattern" | tr -d '\a' | tr '%' '\a'
 }