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new version of cat

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This commit is contained in:
overflowerror 2014-05-23 22:53:31 +02:00
parent cafdc12e33
commit b59e02031c
1 changed files with 51 additions and 14 deletions
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65
wish-sys/sys-part/bin/cat.js
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@ -4,17 +4,38 @@ CatClass.prototype = new Process();
CatClass.prototype.buffer = new Array(); CatClass.prototype.buffer = new Array();
CatClass.prototype.stream; CatClass.prototype.stream;
CatClass.prototype.index = 0; CatClass.prototype.index = 0;
CatClass.prototype.flags = new Array();
CatClass.prototype.main = function(args) { CatClass.prototype.main = function(args) {
console.log("cat: started"); console.log("cat: started");
console.log("cat: checking for input stream"); console.log("cat: checking for input stream");
if (args.length == 1) {
var i = 1;
for (i; i < args.length; i++) {
if (args[i].substring(0, 1) == "-") {
switch(args[i]) {
case "-u":
this.flags['u'] = true;
break;
default:
this.files['stdout'].write("cat: Unknown parameter " + args[i] + "\n");
this.exit(2);
break;
}
} else {
break;
}
}
args.splice(0, i);
if (args.length == 0) {
console.log("cat: found stdin"); console.log("cat: found stdin");
this.file = this.files['stdin']; this.file = this.files['stdin'];
} else { } else {
var env = this.Environment; var env = this.Environment;
var name = args[1]; var name = args[0];
if (name.substring(0, 1) != "/") if (name.substring(0, 1) != "/")
name = env.array['PWD'] + "/" + name; name = env.global['PWD'] + "/" + name;
name = Kernel.Filesystem.shortenPath(name); name = Kernel.Filesystem.shortenPath(name);
console.log("cat: found " + name); console.log("cat: found " + name);
var file = new File(name); var file = new File(name);
@ -28,18 +49,34 @@ CatClass.prototype.main = function(args) {
} }
CatClass.prototype.tick = function() { CatClass.prototype.tick = function() {
var stdout = this.files['stdout']; var stdout = this.files['stdout'];
var text = this.file.read(200, this.index);
for (var i = 0; i < text.length; i++) { if (this.flags['u']) {
if (KeyCodes.isEnter(text.charCodeAt(i)) || (text.charAt(i) == "\n")) { var text = this.file.read(1, this.index);
stdout.write(this.buffer.join("")); stdout.write(text);
this.buffer = new Array(); if (text.charAt(i) == EOF)
}
if (text.charAt(i) == EOF) {
stdout.write(this.buffer.join(""));
this.buffer = new Array();
this.exit(0); this.exit(0);
} else {
var text = this.file.read(200, this.index);
for (var i = 0; i < text.length; i++) {
if (this.buffer.length >= 300) {
// because we need a maximal buffer size
stdout.write(this.buffer.join(""));
this.buffer = new Array();
}
if (KeyCodes.isEnter(text.charCodeAt(i))) {
this.buffer.push(text.charAt(i));
stdout.write(this.buffer.join(""));
this.buffer = new Array();
continue;
}
if (text.charAt(i) == EOF) {
stdout.write(this.buffer.join(""));
this.buffer = new Array();
this.exit(0);
}
this.buffer.push(text.charAt(i));
} }
this.buffer.push(text.charAt(i)); this.index += 200;
} }
this.index += 100;
} }