New file manager app

apps.json

@@ -2209,6 +2209,19 @@
       {"name":"cscsensor.img","url":"cscsensor-icon.js","evaluate":true}
     ]
   },
+  { "id": "fileman",
+    "name": "Simple file manager",
+    "shortName":"FileManager",
+    "icon": "icons8-filing-cabinet-48.png",
+    "version":"0.01",
+    "description": "Simple file manager, allows to examine storage, display or delete files",
+    "tags": "tools",
+    "readme": "README.md",
+    "storage": [
+      {"name":"fileman.app.js","url":"fileman.app.js"},
+      {"name":"fileman.img","url":"fileman-icon.js","evaluate":true}
+    ]
+  },
  { "id": "worldclock",
     "name": "World Clock - 4 time zones",
     "shortName":"World Clock",

apps/fileman/ChangeLog

@@ -0,0 +1 @@
+0.01: New app!

apps/fileman/README.md

@@ -0,0 +1,11 @@
+# FileManager
+
+A small file manager, mostly written for debugging issues on the watch.
+Upon opening, the app will display a list of all the files in storage (it will contract the sub-components of a StorageFile into one entry).
+When selecting a file the following option occurs (depending on file type detected by extension):
+
+- Length: file size in bytes
+- Display file: print out file contents on screen (will attempt to add back newlines for minimized JS code)
+- Load file [*.js files only, no widgets]: load and execute javascript file
+- Display image [*.img files only]: attempt to render file contents as image on screen
+- Delete file: delete file (asks for confirmation first, will delete all components of a StorageFile)

apps/fileman/fileman-icon.js

@@ -0,0 +1 @@
+require("heatshrink").decompress(atob("mEwwhC/ABuIABgWIhAXNwAuVGBIXZmYAKC/4XXkQACC9Z3/C7YANC8J3/C8ciAAQXrO/4XbABoXhO/4XjkQACC9Z3/C7YANC78ICxuAC44wOCxAABiMRBKIAtA=="))

apps/fileman/fileman.app.js

@@ -0,0 +1,101 @@
+const STOR = require("Storage");
+
+const n = 9;
+var nstart = 0;
+var nend;
+var m;
+var files;
+
+function delete_file(fn) {
+  E.showPrompt("Delete\n"+fn+"?", {buttons: {"No":false, "Yes":true}}).then(function(v) {
+    if (v) {
+      if (fn.charCodeAt(fn.length-1)==1) {
+        var fh = STOR.open(fn.substr(0, fn.length-1), "w");
+        fh.erase();
+      }
+      else STOR.erase(fn);
+    }
+  }).then(function() { files=get_pruned_file_list(); }).then(drawMenu);
+}
+
+function get_length(fn) {
+  var len;
+  if (fn.charCodeAt(fn.length-1)==1) {
+    var fh = STOR.open(fn.substr(0, fn.length-1), "r");
+    len = fh.getLength();
+  }
+  else len = STOR.read(fn).length;
+  return len;
+}
+
+function display_file(fn, qJS) {
+  g.clear().setColor(1, 1, 1);
+  var qStorageFile = (fn.charCodeAt(fn.length-1)==1);
+  var np = 0;
+  Terminal.println("");
+  var file_len = get_length(fn);
+  var fb = (qStorageFile ? STOR.open(fn.substr(0, fn.length-1), "r") : STOR.read(fn));
+  for (var i=0; i<file_len; ++i) {
+    if (np++ > 38) {
+      Terminal.println("");
+      np = 0;
+    }
+    var c = (qStorageFile ? fb.read(1) : fb[i]);
+    if (c=="\n") np = 0;
+    if (qJS && !qStorageFile && c==";" && fb[i+1]!="\n") {
+      Terminal.println(";");
+      np = 0;
+    }
+    else Terminal.print(c);
+  }
+  Terminal.println("");
+}
+
+function visit_file(fn) {
+  var menu = {
+    '' : {'title' : fn + (fn.charCodeAt(fn.length-1)==1 ? "(S)" : "")}
+  };
+  var qJS = fn.endsWith(".js");
+  menu['Length: '+get_length(fn)+' bytes'] = function() {};
+  menu['Display file'] = function () { display_file(fn, qJS); };
+  if (qJS && !fn.endsWith(".wid.js")) menu['Load file'] = function() { load(fn); }
+  if (fn.endsWith(".img")) menu['Display image'] = function() { g.clear().drawImage(STOR.read(fn),0,20); }
+  menu['Delete file'] = function () { delete_file(fn); }
+  menu['< Back'] = drawMenu;
+  E.showMenu(menu);
+}
+
+function drawMenu() {
+  nend = (nstart+n<files.length)?nstart+n : files.length;
+  var menu = {
+    '': { 'title': 'Dir('+nstart+'-'+nend+')/'+files.length }
+  };
+  menu["< prev"] = function() {
+    nstart -= n;
+    if (nstart<0) nstart = files.length-n>0 ? files.length-n : 0;
+    menu = {};
+    drawMenu();
+  }
+  for (var i=nstart; i<nend; ++i) {
+    menu[files[i]] = visit_file.bind(null, files[i]);
+  }
+  menu["> next"] = function() {
+    if (nstart+n<files.length) nstart += n;
+    else nstart = 0;
+    menu = {};
+    drawMenu();
+    m.move(-1);
+  }
+  m = E.showMenu(menu);
+}
+
+function get_pruned_file_list() {
+  var fl = STOR.list(/^[^\.]/);
+  fl.sort();
+  fl = fl.concat(STOR.list(/^\./));
+  fl = fl.filter(f => (f.charCodeAt(f.length-1)>31 || f.charCodeAt(f.length-1)<2));
+  return fl;
+}
+
+files = get_pruned_file_list();
+drawMenu();