Rewrite in POSIX shell; index entries from the index pages

1 files changed, 122 insertions, 0 deletions

diff --git a/src/index.sh b/src/index.sh
new file mode 100755
index 0000000..3b4cacd
--- /dev/null
+++ b/src/index.sh
@@ -0,0 +1,122 @@
+#!/usr/bin/env sh
+
+create_table() {
+	sqlite3 "$DB_PATH" "CREATE TABLE IF NOT EXISTS searchIndex(id INTEGER PRIMARY KEY, name TEXT, type TEXT, path TEXT);"
+	sqlite3 "$DB_PATH" "CREATE UNIQUE INDEX IF NOT EXISTS anchor ON searchIndex (name, type, path);"
+}
+
+get_title() {
+	FILE="$1"
+
+	pup -p -f "$FILE" 'title text{}' | \
+		tr -d \\n | \
+		sed 's/(GNU make)//g' | \
+		sed 's/\"/\"\"/g'
+}
+
+get_type() {
+	LINK="$(echo "$1" | sed 's/#[^#]*$//')"
+	LINK_TITLE="$(get_title "$2/$LINK")"
+
+	set -- $POSSIBLE_TYPES
+
+	while [ -n "$1" ]; do
+		if echo "$LINK_TITLE" | grep -iq "$1"; then
+			echo "$1"
+			return
+		fi
+		shift
+	done
+
+	echo "Entry"
+}
+
+insert() {
+	NAME="$1"
+	TYPE="$2"
+	PAGE_PATH="$3"
+
+	sqlite3 "$DB_PATH" "INSERT INTO searchIndex(name, type, path) VALUES (\"$NAME\",\"$TYPE\",\"$PAGE_PATH\");"
+}
+
+insert_index_terms() {
+	# Get each term from an index page and insert
+	while [ -n "$1" ]; do
+		grep -Eo "<a href.*></a>:" "$1" | while read -r line; do
+			insert_term "$line" "$(dirname "$1")"
+		done
+
+		shift
+	done
+}
+
+
+insert_pages() {
+	# Get title and insert into table for each html file
+	while [ -n "$1" ]; do
+		unset PAGE_NAME
+		unset PAGE_TYPE
+		PAGE_NAME="$(get_title "$1")"
+		if [ -n "$PAGE_NAME" ]; then
+			PAGE_TYPE="Guide"
+			insert "$PAGE_NAME" "$PAGE_TYPE" "$(basename "$1")"
+		fi
+		shift
+	done
+}
+
+insert_term() {
+	LINK="$1"
+	PAGE_DIR="$2"
+
+	NAME="$(echo "$LINK" | pup -p 'a text{}' | tr -d \\n | sed 's/"/\"\"/g')"
+	TYPE="$INDEX_TYPE"
+	PAGE_PATH="$(echo "$LINK" | pup -p 'a attr{href}')"
+	if [ -n "$POSSIBLE_TYPES" ]; then
+		TYPE="$(get_type "$PAGE_PATH" "$PAGE_DIR")"
+	elif [ -z "$TYPE" ]; then
+		TYPE="Entry"
+	fi
+
+	insert "$NAME" "$TYPE" "$PAGE_PATH"
+}
+
+TYPE="PAGES"
+
+# Check flags
+while true; do
+	case "$1" in
+		-c|--check)
+			# List of space-separated possible index entry types (overwrites -t)
+			shift
+			POSSIBLE_TYPES="$1"
+			shift
+			;;
+		-i|--index)
+			# Set the script to handle index pages
+			TYPE="INDEX"
+			shift
+			;;
+		-t|--type)
+			# Set a type for index entries
+			shift
+			INDEX_TYPE="$1"
+			shift
+			;;
+		*)
+			break
+	esac
+done
+
+DB_PATH="$1"
+shift
+
+create_table
+case "$TYPE" in
+	PAGES)
+		insert_pages "$@"
+		;;
+	INDEX)
+		insert_index_terms "$@"
+		;;
+esac