just a 'print file contents' program to make fancy screenshots for social media posts

assets/disk0/tvdos/TVDOS.SYS

@@ -188,6 +188,10 @@ class TVDOSFileDescriptor {
         return this.driver.remove(this)
     }
 
+    get exists() {
+        return this.driver.exists(this)
+    }
+
 }
 
 
@@ -363,6 +367,9 @@ _TVDOS.DRV.FS.SERIAL.remove = (fd) => {
     let response = com.getStatusCode(port[0])
     return (response === 0)
 }
+_TVDOS.DRV.FS.SERIAL.exists = (fd) => {
+    return (0 == _TVDOS.DRV.FS.SERIAL._openr(fd))
+}
 
 Object.freeze(_TVDOS.DRV.FS.SERIAL)
 
@@ -407,6 +414,7 @@ _TVDOS.DRV.FS.DEVRND.touch = () => {}
 _TVDOS.DRV.FS.DEVRND.mkDir = () => {}
 _TVDOS.DRV.FS.DEVRND.mkFile = () => {}
 _TVDOS.DRV.FS.DEVRND.remove = () => {}
+_TVDOS.DRV.FS.DEVRND.exists = () => true
 
 Object.freeze(_TVDOS.DRV.FS.DEVRND)
 
@@ -434,6 +442,7 @@ _TVDOS.DRV.FS.DEVNUL.touch = () => {}
 _TVDOS.DRV.FS.DEVNUL.mkDir = () => {}
 _TVDOS.DRV.FS.DEVNUL.mkFile = () => {}
 _TVDOS.DRV.FS.DEVNUL.remove = () => {}
+_TVDOS.DRV.FS.DEVNUL.exists = () => true
 
 Object.freeze(_TVDOS.DRV.FS.DEVNUL)
 
@@ -459,6 +468,7 @@ _TVDOS.DRV.FS.DEVZERO.touch = () => {}
 _TVDOS.DRV.FS.DEVZERO.mkDir = () => {}
 _TVDOS.DRV.FS.DEVZERO.mkFile = () => {}
 _TVDOS.DRV.FS.DEVZERO.remove = () => {}
+_TVDOS.DRV.FS.DEVZERO.exists = () => true
 
 Object.freeze(_TVDOS.DRV.FS.DEVZERO)
 
@@ -509,6 +519,7 @@ _TVDOS.DRV.FS.DEVCON.touch = () => {}
 _TVDOS.DRV.FS.DEVCON.mkDir = () => {}
 _TVDOS.DRV.FS.DEVCON.mkFile = () => {}
 _TVDOS.DRV.FS.DEVCON.remove = () => {}
+_TVDOS.DRV.FS.DEVCON.exists = () => true
 
 Object.freeze(_TVDOS.DRV.FS.DEVCON)
 

assets/disk0/tvdos/bin/printfile.js

@@ -0,0 +1,44 @@
+const COL_LNUMBACK = 18
+const COL_LNUMFORE = 253
+
+let filename = undefined
+
+if (exec_args !== undefined && exec_args[1] !== undefined) {
+    filename = exec_args[1]
+}
+else {
+    println("File to print out?")
+    filename = read()
+}
+let driveLetter = _G.shell.getCurrentDrive()
+let filePath = _G.shell.getPwdString() + filename
+
+let file = files.open(`${driveLetter}:${filePath}`)
+
+if (!file.exists) {
+    printerrln("File not found")
+    return 1
+}
+
+let textbuffer = file.sread().split("\n")
+
+function drawLineNumber(lnum) {
+    con.curs_set(0)
+    con.color_pair(COL_LNUMFORE, COL_LNUMBACK)
+
+    if (lnum < 1 || lnum - 1 >= textbuffer.length) print('    ')
+    else if (lnum >= 10000) print(`${String.fromCharCode(64+lnum/10000)}${(""+lnum%10000).padStart(4,'0')}`)
+    else if (lnum >= 1000) print(`${lnum}`)
+    else if (lnum >= 100) print(`${lnum} `)
+    else if (lnum >= 10) print(` ${lnum} `)
+    else print(`  ${lnum} `)
+}
+
+textbuffer.forEach((line,i) => {
+    drawLineNumber(i + 1)
+    con.reset_graphics()
+    print(' ')
+    println(line)
+})
+
+return 0