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pipe now works with dir

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minjaesong
2022-05-25 10:46:46 +09:00
parent 359ef6d235
commit ab2b21552a
1 changed files with 51 additions and 2 deletions
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53
assets/disk0/tvdos/bin/command.js
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@@ -381,6 +381,21 @@ shell.coreutils = {
};
shell.coreutils.chdir = shell.coreutils.cd;
Object.freeze(shell.coreutils);
shell.stdio = {
out: {
print: function(s) { sys.print(s) },
println: function(s) { if (s === undefined) sys.print("\n"); else sys.print(s+"\n") },
printerr: function(s) { sys.print("\x1B[31m"+s+"\x1B[m") },
printerrln: function(s) { if (s === undefined) sys.print("\n"); else sys.print("\x1B[31m"+s+"\x1B[m\n") },
},
pipe: {
print: function(s) { if (shell.getPipe() === undefined) throw Error("No pipe opened"); shell.appendToCurrentPipe(s); },
println: function(s) { if (shell.getPipe() === undefined) throw Error("No pipe opened"); if (s === undefined) shell.appendToCurrentPipe("\n"); else shell.appendToCurrentPipe(s+"\n") },
printerr: function(s) { if (shell.getPipe() === undefined) throw Error("No pipe opened"); shell.appendToCurrentPipe("\x1B[31m"+s+"\x1B[m") },
printerrln: function(s) { if (shell.getPipe() === undefined) throw Error("No pipe opened"); if (s === undefined) shell.appendToCurrentPipe("\n"); else shell.appendToCurrentPipe("\x1B[31m"+s+"\x1B[m\n") },
}
}
Object.freeze(shell.stdio)
shell.execute = function(line) {
if (0 == line.size) return;
let parsedTokens = shell.parse(line); // echo, "hai", |, less
@@ -408,6 +423,23 @@ shell.execute = function(line) {
let op = operators[c]
// TODO : if operator is not undefined, swap built-in print functions with ones that 'prints' on pipes instead of stdout
if (op == '|') {
serial.println(`Statement #${c+1}: pushing anon pipe`)
shell.pushAnonPipe('')
print = shell.stdio.pipe.print
println = shell.stdio.pipe.println
printerr = shell.stdio.pipe.printerr
printerrln = shell.stdio.pipe.printerrln
}
else {
// pipe destruction is at the very bottom
print = shell.stdio.out.print
println = shell.stdio.out.println
printerr = shell.stdio.out.printerr
printerrln = shell.stdio.out.printerrln
}
let tokens = statements[c]
@@ -523,11 +555,19 @@ shell.execute = function(line) {
}
}
// destroy pipe if operator is not pipe
if (op != "|" && op != ">>" && op != ">") {
serial.println(`Statement #${c+1}: destroying pipe`)
serial.println(`its content was: ${shell.removePipe()}`)
}
return retValue
}
};
shell.pipes = {}; // syntax: _G.shell.pipes[name] = contents; all pipes are named pipes just like in Windows
shell.currentlyActivePipes = []; // pipe queue. Use shell.getPipe() to dequeue and shell.pushPipe() to enqueue.
shell.currentlyActivePipes = []; // Queue of pipe's names. Use shell.removePipe() to dequeue and shell.pushPipe() to enqueue.
shell._rndstr = '0123456789+qwfpgjluyarstdhneiozxcvbkm/QWFPGJLUYARSTDHNEIOZXCVBKM'
shell.generateRandomName = function() {
let name = ''
@@ -541,9 +581,14 @@ shell.generateRandomName = function() {
return name
}
shell.getPipe = function() {
let n = shell.currentlyActivePipes.shift()
let n = shell.currentlyActivePipes[0]
return (n != undefined) ? shell.pipes[n] : undefined
}
shell.appendToCurrentPipe = function(s) {
let n = shell.currentlyActivePipes[0]
let content = (n != undefined) ? shell.pipes[n] : undefined
shell.pipes[n] = content += s
}
shell.pushAnonPipe = function(contents) {
let name = shell.generateRandomName()
shell.pushPipe(name, contents)
@@ -555,6 +600,10 @@ shell.pushPipe = function(name, contents) {
shell.hasPipe = function() {
return shell.currentlyActivePipes[0] != undefined
}
shell.removePipe = function() {
let n = shell.currentlyActivePipes.shift()
return (n != undefined) ? shell.pipes[n] : undefined
}
Object.freeze(shell);
_G.shell = shell;