luci-base: fs.js: support Blob/JSON in read_direct() and exec_direct()

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
(cherry picked from commit da4b0f0483024066a163080324638eb3761bd3aa)

diff --git a/modules/luci-base/htdocs/luci-static/resources/fs.js b/modules/luci-base/htdocs/luci-static/resources/fs.js
index d32b20f2f1cc73bbe8699545eca1fab29cd1b545..df3a14b75653b7027249b5ea79da850c8a47ddee 100644 (file)
--- a/modules/luci-base/htdocs/luci-static/resources/fs.js
+++ b/modules/luci-base/htdocs/luci-static/resources/fs.js
@@ -130,7 +130,16 @@ function handleCgiIoReply(res) {
                throw e;
        }
 
-       return res.text();
+       switch (this.type) {
+       case 'blob':
+               return res.blob();
+
+       case 'json':
+               return res.json();
+
+       default:
+               return res.text();
+       }
 }
 
 /**
@@ -334,17 +343,24 @@ var FileSystem = L.Class.extend(/** @lends LuCI.fs.prototype */ {
         * @param {string} path
         * The file path to read.
         *
-        * @returns {Promise<string>}
-        * Returns a promise resolving to a string containing the file contents or
-        * rejecting with an error stating the failure reason.
+        * @param {string} [type=text]
+        * The expected type of read file contents. Valid values are `text` to
+        * interpret the contents as string, `json` to parse the contents as JSON
+        * or `blob` to return the contents as Blob instance.
+        *
+        * @returns {Promise<*>}
+        * Returns a promise resolving with the file contents interpreted according
+        * to the specified type or rejecting with an error stating the failure
+        * reason.
         */
-       read_direct: function(path) {
+       read_direct: function(path, type) {
                var postdata = 'sessionid=%s&path=%s'
                        .format(encodeURIComponent(L.env.sessionid), encodeURIComponent(path));
 
                return L.Request.post(L.env.cgi_base + '/cgi-download', postdata, {
-                       headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
-               }).then(handleCgiIoReply);
+                       headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+                       responseType: (type == 'blob') ? 'blob' : 'text'
+               }).then(handleCgiIoReply.bind({ type: type }));
        },
 
        /**
@@ -369,11 +385,17 @@ var FileSystem = L.Class.extend(/** @lends LuCI.fs.prototype */ {
         * @param {string[]} [params]
         * The arguments to pass to the command.
         *
-        * @returns {Promise<string>}
-        * Returns a promise resolving to the gathered command stdout output or
-        * rejecting with an error stating the failure reason.
+        * @param {string} [type=text]
+        * The expected output type of the invoked program. Valid values are
+        * `text` to interpret the output as string, `json` to parse the output
+        * as JSON or `blob` to return the output as Blob instance.
+        *
+        * @returns {Promise<*>}
+        * Returns a promise resolving with the command stdout output interpreted
+        * according to the specified type or rejecting with an error stating the
+        * failure reason.
         */
-       exec_direct: function(command, params) {
+       exec_direct: function(command, params, type) {
                var cmdstr = String(command)
                        .replace(/\\/g, '\\\\').replace(/(\s)/g, '\\$1');
 
@@ -386,8 +408,9 @@ var FileSystem = L.Class.extend(/** @lends LuCI.fs.prototype */ {
                        .format(encodeURIComponent(L.env.sessionid), encodeURIComponent(cmdstr));
 
                return L.Request.post(L.env.cgi_base + '/cgi-exec', postdata, {
-                       headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
-               }).then(handleCgiIoReply);
+                       headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+                       responseType: (type == 'blob') ? 'blob' : 'text'
+               }).then(handleCgiIoReply.bind({ type: type }));
        }
 });