Replace python with bash.

_scripts/sh/create_pages.sh

@@ -0,0 +1,142 @@
+#!/usr/local/bin/bash
+#
+# Create HTML pages for Categories and Tags in posts.
+#
+# Usage:
+#     Call from the '_posts' sibling directory.
+#
+# v2.2
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2020 Cotes Chung
+# Published under MIT License
+
+set -eu
+
+TYPE_CATEGORY=0
+TYPE_TAG=1
+
+category_count=0
+tag_count=0
+
+read_categories() {
+  if [[ $(grep "categories:" $1) ]]; then
+    grep "categories:" $1 | head -1 | sed 's/categories: *//;s/\[//;s/\]//;s/, */,/g;s/"//g'
+  elif [[  $(grep "category:" $1) ]]; then
+    grep "category:" $1 | head -1 | sed 's/category: *//;s/\[//;s/\]//;s/, */,/g;s/"//g'
+  fi
+}
+
+
+read_tags() {
+  grep "tags:" $1 | head -1 | sed 's/tags: *//;s/\[//;s/\]//;s/, */,/g;s/"//g'
+}
+
+
+init() {
+  if [[ -d categories ]]; then
+    rm -rf categories
+  fi
+
+  if [[ -d tags ]]; then
+    rm -rf tags
+  fi
+
+  mkdir categories tags
+}
+
+
+create_category() {
+  local _name=$1
+  local _filepath="categories/$(echo $_name | sed 's/ /-/g' | awk '{print tolower($0)}').html"
+
+  if [[ ! -f $_filepath ]]; then
+    echo "---" > $_filepath
+    echo "layout: category" >> $_filepath
+    echo "title: $_name" >> $_filepath
+    echo "category: $_name" >> $_filepath
+    echo "---" >> $_filepath
+
+    ((category_count=category_count+1))
+  fi
+}
+
+
+create_tag() {
+  local _name=$1
+  local _filepath="tags/$( echo $_name | sed "s/ /-/g;s/'//g" | awk '{print tolower($0)}' ).html"
+
+  if [[ ! -f $_filepath ]]; then
+
+    echo "---" > $_filepath
+    echo "layout: tag" >> $_filepath
+    echo "title: $_name" >> $_filepath
+    echo "tag: $_name" >> $_filepath
+    echo "---" >> $_filepath
+
+    ((tag_count=tag_count+1))
+  fi
+}
+
+
+#########################################
+# Create HTML pages for Categories/Tags.
+# Arguments:
+#   $1 - an array string
+#   $2 - type specified option
+#########################################
+create_pages() {
+  if [[ $1 == '' ]]; then
+    exit 0
+  fi
+
+  # split string to array
+  IFS_BAK=$IFS
+  IFS=','
+  local _string=$1
+
+  case $2 in
+
+    $TYPE_CATEGORY)
+      for i in ${_string#,}; do
+        create_category $i
+      done
+      ;;
+
+    $TYPE_TAG)
+      for i in ${_string#,}; do
+        create_tag $i
+      done
+      ;;
+
+    *)
+      ;;
+
+    esac
+
+    IFS=$IFS_BAK
+  }
+
+
+main() {
+  init
+
+  for _file in $(ls "_posts")
+  do
+    local _path="_posts/$_file"
+    local _categories=$(read_categories "$_path")
+    local _tags=$(read_tags "$_path")
+
+    create_pages "$_categories" $TYPE_CATEGORY
+    create_pages "$_tags" $TYPE_TAG
+  done
+
+  if [[ $category_count -gt 0 ]]; then
+    echo "[INFO] Succeed! $category_count category-pages created."
+  fi
+
+  if [[ $tag_count -gt 0 ]]; then
+    echo "[INFO] Succeed! $tag_count tag-pages created."
+  fi
+}
+
+main