eget: add support for https://github.com/owner/project urls

eget

@@ -3,9 +3,9 @@
 # Example use:
 # eget http://ftp.altlinux.ru/pub/security/ssl/*
 #
-# Copyright (C) 2014-2014, 2016  Etersoft
+# Copyright (C) 2014-2014, 2016, 2020  Etersoft
 # Copyright (C) 2014 Daniil Mikhailov <danil@etersoft.ru>
-# Copyright (C) 2016-2017 Vitaly Lipatov <lav@etersoft.ru>
+# Copyright (C) 2016-2017, 2020 Vitaly Lipatov <lav@etersoft.ru>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
@@ -50,6 +50,7 @@ fatal()
 # check man glob
 filter_glob()
 {
+	[ -z "$1" ] && cat && return
 	# translate glob to regexp
 	grep "^$(echo "$1" | sed -e "s|\*|.*|g" -e "s|?|.|g")$"
 }
@@ -79,13 +80,46 @@ fi
 if [ "$1" = "-h" ] || [ "$1" = "--help" ] ; then
     echo "eget - wget wrapper, with support"
     echo "Usage: eget [-O target file] [--list] http://somesite.ru/dir/na*.log"
+    echo
     echo "Options:"
-    echo "    --list - print files frm url with mask"
+    echo "    --list   - print files frm url with mask"
+    echo "    --latest - print only latest version of file"
+    echo
+    echo "eget supports --list and download for https://github.com/owner/project urls"
     echo
-    wget --help
+    echo "See $ wget --help for wget options you can use here"
+    exit
+fi
+
+get_github_urls()
+{
+    # https://github.com/OWNER/PROJECT
+    local owner="$(echo "$1" | sed -e "s|^https://github.com/||" -e "s|/.*||")" #"
+    local project="$(echo "$1" | sed -e "s|^https://github.com/$owner/||" -e "s|/.*||")" #"
+    [ -n "$owner" ] || fatal "Can't get owner from $1"
+    [ -n "$project" ] || fatal "Can't get project from $1"
+    local URL="https://api.github.com/repos/$owner/$project/releases/latest"
+    local q=''
+    [ -n "$LISTONLY" ] && q="-q"
+    $WGET $q -O- $URL | \
+        grep -i -o -E '"browser_download_url": "https://.*"' | cut -d'"' -f4
+}
+
+if echo "$1" | grep -q "^https://github.com/" ; then
+    MASK="$2"
+
+    if [ -n "$LISTONLY" ] ; then
+        get_github_urls "$1" | filter_glob "$MASK" | filter_order
+        exit
+    fi
+
+    for fn in $(get_github_urls "$1" | filter_glob "$MASK" | filter_order) ; do
+        $WGET "$fn" || ERROR=1
+    done
     exit
 fi
 
+
 # do not support /
 if echo "$1" | grep -q "/$" ; then
     fatal "Use http://example.com/e/* to download all files in dir"