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halyde/apps/res.lua

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+local component = require("component")
+local gpu = component.gpu
+local shell = require("shell")
+
+local args = {...}
+
+local maxX, maxY = gpu.maxResolution()
+local curX, curY = gpu.getResolution()
+
+local function setRes()
+    if not(args[1] == "-x" or args[1] == "-y") then
+        print("\x1b[91mUnknown argument. \x1b[39mTry running \x1b[92m\"help res\"")
+        return
+    end
+
+    local lastarg = ""
+    local x, y
+    for i = 1, 3, 2 do
+        if args[i] == "-x" then
+            if lastarg ~= "x" then
+                x = tonumber(args[i + 1])
+                lastarg = "x"
+            else
+                print("\x1b[91mValue \"x\" was set more than once. \x1b[39mTry running \x1b[92m\"help res\"")
+                return
+            end
+        elseif args[i] == "-y" then
+            if lastarg ~= "y" then
+                y = tonumber(args[i + 1])
+                lastarg = "y"
+            else
+                print("\x1b[91mValue \"y\" was set more than once. \x1b[39mTry running \x1b[92m\"help res\"")
+                return
+            end
+        end
+    end
+
+    if x then
+        if x > maxX then
+            print("\x1b[91mGPU does not support x higher than " .. maxX)
+            return
+        end
+    end
+    if y then
+        if y > maxY then
+            print("\x1b[91mGPU does not support y higher than " .. maxY)
+            return
+        end
+    end
+
+    if x and not(y) then
+        gpu.setResolution(x, curY)
+        print("Successfully set X resolution from \x1b[93m" .. curX .. "\x1b[39m to \x1b[92m" .. x .. "\x1b[39m.")
+        return
+    elseif not(x) and y then
+        gpu.setResolution(curX, y)
+        print("Successfully set Y resolution from \x1b[93m" .. curY .. "\x1b[39m to \x1b[92m" .. y .. "\x1b[39m.")
+        return
+    else
+        gpu.setResolution(x, y)
+        print("Successfully set resolution from \x1b[93m" .. curX .. "x" .. curY .. "\x1b[39m to \x1b[92m" .. x .. "x" .. y .. "\x1b[39m.")
+        return
+    end
+end
+
+local function getRes(val)
+    if val == "x" then
+        print("Current X resolution: \x1b[93m" .. curX)
+        print("Maximum supported X resolution: \x1b[92m" .. maxX)
+    elseif val == "y" then
+        print("Current Y resolution: \x1b[93m" .. curY)
+        print("Maximum supported Y resolution: \x1b[92m" .. maxY)
+    else
+        print("Current resolution: \x1b[93m" .. curX .. "x" .. curY)
+        print("Maximum supported resolution: \x1b[92m" .. maxX .. "x" .. maxY)
+    end
+end
+
+if #args == 0 then
+    getRes()
+    return
+end
+
+if not(#args == 1) then
+    setRes()
+    return
+end
+
+local axis = args[1]
+if axis == "-x" then
+    getRes("x")
+elseif axis == "-y" then
+    getRes("y")
+else
+    print("\x1b[91mUnknown argument. \x1b[39mTry running \x1b[92m\"help res\"")
+end