Add HTML templating, extend tests.

[redo-blog] / processor / helpers.sh

diff --git a/processor/helpers.sh b/processor/helpers.sh
index c90e077dc9a37dc444c9a2d778d045fcc1c11e20..2869a29a3d414db7066c71e17ff1439b0b7c6c92 100644 (file)
--- a/processor/helpers.sh
+++ b/processor/helpers.sh
@@ -1,19 +1,51 @@
 #!/bin/sh
 
-escape_html()
-{
-out=`python3 -c 'import sys, html; print(html.escape(sys.argv[1]))' "$1"`
-printf "%s" "$out"
+escape_html() {
+  out=`python3 -c 'import sys, html; print(html.escape(sys.argv[1]))' "$1"`
+  printf "%s" "$out"
 }
 
-read_and_escape_file()
-{
-in=`cat "$1"`
-escape_html "$in"
+read_and_escape_file() {
+  in=`cat "$1"`
+  escape_html "$in"
 }
 
-escape_url()
-{
-out=`python3 -c 'import sys, urllib.parse; print(urllib.parse.quote(sys.argv[1]))' "$1"`
-printf "%s" "$out"
+escape_url() {
+  out=`python3 -c 'import sys, urllib.parse; print(urllib.parse.quote(sys.argv[1]))' "$1"`
+  printf "%s" "$out"
+}
+
+get_basepath() {
+  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"
+  printf "%s" "$basepath"
+}
+
+get_source_file() {
+  md_file="../${1%.*}.md"
+  rst_file="../${1%.*}.rst"
+  if [ -f "$rst_file" ]; then
+    src_file="$rst_file"
+  elif [ -f "$md_file" ]; then
+    src_file="$md_file"
+  else
+    exit 1
+  fi
+  redo-ifchange "$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'
 }