From 4d671e3ba334d4ea4379978c0c7706bad8a63677 Mon Sep 17 00:00:00 2001
From: Lisa Milne <lisamilne618@gmail.com>
Date: Fri, 10 Nov 2023 17:11:15 +1000
Subject: [PATCH] make downloads work via stdio (writing to /dev/local triggers
 download)

---
 clite/commands.js | 15 +++++++--------
 clite/core.js     | 34 +++++++++++++++++++++++++++++++---
 2 files changed, 38 insertions(+), 11 deletions(-)

diff --git a/clite/commands.js b/clite/commands.js
index 8a2defe..2a63aec 100644
--- a/clite/commands.js
+++ b/clite/commands.js
@@ -155,14 +155,13 @@ Options:
 			var d = stdio.readAll(fd);
 			if (d != null) {
 				if (download) {
-					var link = document.createElement("a");
-					link.target = '_blank';
-					link.download = fd.node.name;
-					var blob = new Blob([d], {type: "text/plain"});
-					link.href = URL.createObjectURL(blob);
-					document.body.appendChild(link);
-					link.click();
-					document.body.removeChild(link);
+					var ld = stdio.open('/dev/local',false);
+					if (ld) {
+						stdio.write(ld,{name:fd.node.name,data:d});
+						stdio.close(ld);
+					}else{
+						io.error('can not write to local device');
+					}
 				}else{
 					io.write(d);
 				}
diff --git a/clite/core.js b/clite/core.js
index 7f52bc1..b36292d 100644
--- a/clite/core.js
+++ b/clite/core.js
@@ -84,6 +84,16 @@ var clite = {
 						callback(data);
 					});
 			}
+		},
+		download:function(name,data) {
+			var link = document.createElement("a");
+			link.target = '_blank';
+			link.download = name;
+			var blob = new Blob([data], {type: "text/plain"});
+			link.href = URL.createObjectURL(blob);
+			document.body.appendChild(link);
+			link.click();
+			document.body.removeChild(link);
 		}
 	},
 	init:function() {
@@ -128,7 +138,7 @@ data/about.txt:/usr/share/site/about:0:0:-rw-rw-r--`;
 				}
 				n.data.content = data;
 				n.perms = 'cr--r-----';
-				n.isdev = true;
+				n.data.isdev = true;
 				var fd = clite.io.open('/dev/wfs');
 				var l;
 				while ((l = clite.io.readLine(fd)) != null) {
@@ -165,7 +175,22 @@ data/about.txt:/usr/share/site/about:0:0:-rw-rw-r--`;
 				clite.io.close(fd);
 				// populate /dev (data/filesys.txt is /dev/wfs already)
 				clite.log.write('Populating /dev');
-					// TODO: are there any other devices we need?
+				// writing to /dev/local downloads data {name:'filename to save',data:'file content'}
+				vfsapi.mkFile('/dev/local');
+				var n = vfsapi.getNode('/dev/local');
+				if (!n) {
+					clite.log.write('local device failure');
+					return;
+				}
+				n.data.content = {
+					read:null,
+					write:function(obj) {
+						clite.core.download(obj.name,obj.data);
+						return true;
+					}
+				};
+				n.perms = 'crw-rw-rw-';
+				n.data.isdev = true;
 				// populate /bin
 				clite.log.write('Populating /bin');
 				// create a temporary function to load in commands
@@ -424,7 +449,10 @@ clite.io = {
 		clite.io.write = function(fd,data) {
 			if (!fd.canwrite)
 				return false;
-			if (typeof fd.data.content != 'string')
+			if (fd.node.data.isdev && typeof data.name === 'string' && typeof data.data === 'string') {
+				return fd.node.data.content.write(data);
+			}
+			if (typeof fd.node.data.content != 'string')
 				return false;
 			if (typeof data != 'string')
 				return false;