Adds “formats” (that is, XBEL-output)

bookmarks-dl.sh

@@ -8,47 +8,86 @@
 # Lisc: GPLv3
 #―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――
 
-SOURCE_DIRS="./sources/ $HOME/.local/libexec/bookmarks-dl/ /usr/local/libexec/bookmarks-dl/ /usr/libexec/bookmarks-dl/"
+SOURCE_DIRS="./sources/ $HOME/.local/libexec/bookmarks-dl/sources/ /usr/local/libexec/bookmarks-dl/sources/ /usr/libexec/bookmarks-dl/sources/"
+FORMAT_DIRS="./formats/ $HOME/.local/libexec/bookmarks-dl/formats/ /usr/local/libexec/bookmarks-dl/formats/ /usr/libexec/bookmarks-dl/formats/"
 
 usage() {
 	1>&2 echo "usage: $(basename "$0") SOURCE ..."
-	1>&2 echo "       $(basename "$0") --list"
+	1>&2 echo "       $(basename "$0") --sources"
+	1>&2 echo "       $(basename "$0") --formats"
 	1>&2 echo "       $(basename "$0") --help"
 	1>&2 echo ""
 	1>&2 echo "  SOURCE is a source of bookmarks."
 	1>&2 echo "  You can see a list of sources with '--list'."
+	1>&2 echo "  You can see a list of output formats with '--formats'."
 }
 
 
 # Return the paths to all available bookmarks-dl “source” scripts.
-all_sources() {
-	find $SOURCE_DIRS -type f -name '*.sh' \
+all_scripts() {
+	local target_dirs="$1"
+	find $target_dirs -type f -name '*.sh' \
 		 2> /dev/null
 }
 
 
 # Return the path to a specific bookmarks-dl source.
-get_source() {
-	local source_name="$1"
-	all_sources \
-		| grep "/$source_name.sh" \
+get_script() {
+	local script_dirs="$1"
+	local script_name="$2"
+	all_scripts \
+		| grep "/$script_name.sh" \
 		| head -1
 }
 
 
 # List all available bookmarks-dl sources user-friendly-like.
-list_sources() {
-	for source in $(all_sources); do
+list_scripts() {
+	local script_dirs="$1"
+	for script in $(all_scripts "$script_dirs"); do
 		printf '%s\t%s\n' \
-			   "$(basename "$source" | sed 's/\.sh//')" \
-			   "$source"
+			   "$(basename "$script" | sed 's/\.sh//')" \
+			   "$script"
 	done
 }
 
 
+# Given the arguments to this program, find that matching `-f`, the paramter
+# for selecting a specific format.
+get_format() {
+	while test -n "$1" -a ! "$1" = "-f"; do
+		shift
+	done
+	if test "$1" = "-f"; then
+		echo "$2"
+	fi
+}
+
+
+# The function called to format the internal JSON-format bookmarks into a
+# more usable format. This should be overridden by a “format” script; see
+# last couple of lines of this script.
+# It receives the bookmarks over stdin, and returns them over stdout.
+format_bookmarks() {
+	cat
+}
+
+
+# The function called to parse arguments of a source and begin downloading
+# bookmarks-dl.sh
+# This should be overloaded by a “source” script.
+source_start() {
+	exit 4
+}
+
+
+# ————————————————————————————————————————
+# MISC. UTILS
+# ————————————————————————————————————————
 # Given some HTML, return it’s plain-text and deescaped form.
 html_text_deescape() {
-	lynx -dump -stdin
+	lynx -dump -stdin \
+		| xargs echo    # Trim trailing/preceding whitespace.
 }
 
 
@@ -88,22 +127,32 @@ curl_browseresque() {
 }
 
 
+# ————————————————————————————————————————
+# INVOCATION
+# ————————————————————————————————————————
 SOURCE_NAME="$1"
 case "$SOURCE_NAME" in
-	--list|list)
-		list_sources
+	--sources|sources)
+		list_scripts "$SOURCE_DIRS"
 		exit 0
 		;;
+	--formats|formats)
+		list_scripts "$FORMAT_DIRS"
+		exit 0
+		;;
+
 	--help|-h|help|'')
 		usage
 		exit 1
 		;;
 	*)
-		source "$(get_source "$SOURCE_NAME")" \
-			   2> /dev/null > /dev/null
-		if test "$?" -ne 0; then
+		SOURCE="$(get_script "$SOURCE_DIRS" "$SOURCE_NAME")"
+		if test -f "$SOURCE"; then
+			source "$SOURCE"
+		fi
+		if test "$?" -ne 0 -o ! -f "$SOURCE"; then
 			1>&2 echo "The source '$SOURCE_NAME' couldn’t be found."
-			1>&2 echo "Try '$(basename "$0") --list' to see a list of possible sources."
+			1>&2 echo "Try '$(basename "$0") --sources' to see a list of possible sources."
 		fi
 		;;
 esac
@@ -117,5 +166,13 @@ else
 fi
 
 
-# Overloaded by the `source`-d bookmarks-dl “source.”
-source_start $@
+FORMAT="$(get_script "$FORMAT_DIRS" "$(get_format $@)")"
+if test -f "$FORMAT"; then
+	source "$FORMAT" \
+		   2> /dev/null > /dev/null
+fi
+
+
+# These both should be overloaded.
+source_start $@ \
+	| format_bookmarks

formats/xbel.sh

@@ -0,0 +1,55 @@
+#!/bin/sh
+#―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――
+# Name: bookmarks-dl: xbel
+# Desc: Output format for bookmarks-dl, formatting bookmarks in XBEL format.
+# Auth: Jaidyn Ann <jadedctrl@posteo.at>
+# Date: 2023-09-04
+# Reqs: lynx, jq
+# Lisc: GPLv3
+#―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――
+
+format_bookmarks() {
+	local json_bookmarks_file="$(mktemp)"
+	cat \
+		> "$json_bookmarks_file"
+
+	echo '<?xml version="1.0" encoding="UTF-8"?>'
+	echo '<xbel version="1.0">'
+
+	items_count="$(jq -r '. | length' < "$json_bookmarks_file")"
+	item_index="0"
+	while test "$item_index" -lt "$items_count"; do
+		format_bookmark "$json_bookmarks_file" "$item_index"
+		item_index="$(echo "$item_index + 1" | bc)"
+	done
+
+	echo "</xbel>"
+	rm "$json_bookmarks_file"
+}
+
+
+format_bookmark() {
+	local json_file="$1"
+	local json_index="$2"
+
+	title="$(jq -r ".[$json_index].title" < "$json_file")" # | html_text_deescape | html_escape)"
+	desc="$(jq -r ".[$json_index].desc" < "$json_file")" # | html_text_deescape | html_escape)"
+	added="$(jq -r ".[$json_index].added" < "$json_file")"
+	href="$(jq -r ".[$json_index].href" < "$json_file")"
+	if test -z "$title" -a -n "$desc"; then
+		title="$(echo "$desc" | head --bytes=40)"
+	fi
+
+	cat <<MDR
+  <bookmark href="$href" $(if valid_value "$added"; then echo "added=\"$added\""; fi)>
+    $(if valid_value "$title"; then echo "<title>$title</title>"; fi)
+    $(if valid_value "$desc"; then echo "<desc>$desc</desc>"; fi)
+  </bookmark>
+MDR
+}
+
+
+valid_value() {
+	local value="$1"
+	test -n "$value" -a ! "$value" = "null"
+}

sources/mastodon.sh

@@ -46,7 +46,7 @@ fetch_bookmarks() {
 source_start() {
 	local auth=""
 	local domain=""
-	while getopts 'ha:u:d:' arg; do
+	while getopts 'hf:a:u:d:' arg; do
 		case $arg in
 			h)
 				usage

sources/pixiv.sh

@@ -75,7 +75,7 @@ fetch_bookmarks() {
 source_start() {
 	local auth=""
 	local user_id=""
-	while getopts 'ha:u:' arg; do
+	while getopts 'hf:a:u:' arg; do
 		case $arg in
 			h)
 				usage