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default shell: testing coreutils with cd command

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This commit is contained in:
minjaesong
2020-11-01 23:27:09 +09:00
parent a23d85ea6c
commit 1a8ced3486
3 changed files with 51 additions and 16 deletions
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53
assets/tvdos/command.js
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@@ -1,16 +1,29 @@
let PROMPT_TEXT = ">";
let CURRENT_DRIVE = "A";
let shell_pwd = [""];
let shell_pwd = [];
const welcome_text = "TSVM Disk Operating System, version " + _TVDOS.VERSION;
function get_prompt_text() {
return CURRENT_DRIVE + ":\\" + shell_pwd.join("\\") + PROMPT_TEXT;
function print_prompt_text() {
//print(CURRENT_DRIVE + ":\\" + shell_pwd.join("\\") + PROMPT_TEXT);
con.color_pair(239,161);
print(" "+CURRENT_DRIVE+":");
con.color_pair(161,253);
con.addch(16);
con.color_pair(0,253);
print(" \\"+shell_pwd.join("\\")+" ");
con.color_pair(253,255);
con.addch(16);
con.addch(32);
con.color_pair(239,255);
}
function greet() {
println(welcome_text);
con.color_pair(0,253);
//print(welcome_text + " ".repeat(_fsh.scrwidth - welcome_text.length));
print(welcome_text + " ".repeat(80 - welcome_text.length));
con.color_pair(239,255);
println();
}
@@ -66,7 +79,7 @@ shell.parse = function(input) {
tokens.push(stringBuffer); stringBuffer = "";
mode = "LIMBO";
}
else if (c == '\\') {
else if (c == '^') {
mode = "ESCAPE";
}
else {
@@ -86,7 +99,30 @@ shell.parse = function(input) {
return tokens;
}
if (exec_args !== undefined) return shell;
shell.coreutils = {
cd: function(args) {
if (args[1] === undefined) {
println(shell_pwd.join("\\"));
return
}
shell_pwd = args[1].split("\\");
}
};
Object.freeze(shell.coreutils);
shell.execute = function(line) {
if (line.size == 0) return;
let tokens = shell.parse(line);
let cmd = tokens[0].toLowerCase();
if (shell.coreutils[cmd] !== undefined) {
shell.coreutils[cmd](tokens);
}
else {
printerrln('Bad command or filename: "'+cmd+'"');
}
};
if (exec_args !== undefined) return Object.freeze(shell);
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -98,7 +134,7 @@ greet();
let cmdHistory = []; // zeroth element is the oldest
let cmdHistoryScroll = 0; // 0 for outside-of-buffer, 1 for most recent
while (true) {
print(get_prompt_text());
print_prompt_text();
let cmdbuf = "";
@@ -120,8 +156,7 @@ while (true) {
else if (key === 10 || key === 13) {
println();
try {
let tokens = shell.parse(cmdbuf);
tokens.forEach(function(it) { println(it+"_"); });
shell.execute(cmdbuf);
}
catch (e) {
printerrln(e);