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cmd parser

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This commit is contained in:
minjaesong
2020-11-01 18:41:39 +09:00
parent 5d66234c47
commit a2e74313a1
2 changed files with 18 additions and 15 deletions
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11
assets/tvdos/TVDOS.SYS
View File

@@ -8,6 +8,11 @@ _TVDOS.DRIVES["A"] = _BIOS.FIRST_BOOTABLE_PORT;
//TODO
_TVDOS.defaults = {
path: [
""
]
};
Object.freeze(_TVDOS);
///////////////////////////////////////////////////////////////////////////////
@@ -71,12 +76,6 @@ var execApp = function(cmdsrc, args) {
///////////////////////////////////////////////////////////////////////////////
// Boot script
_TVDOS.defaults = {
path: [
""
]
};
filesystem.open("A", "tvdos/command.js", "R");
let cmdsrc = filesystem.readAll("A");

22
assets/tvdos/command.js
View File

@@ -36,6 +36,7 @@ shell.parse = function(input) {
ESCAPE -> QUOTE
LIMBO -> LITERAL [label="not space"]
LIMBO -> QUOTE [label="\""]
LIMBO -> LIMBO [label="space"]
}*/
if (mode == "LITERAL") {
@@ -52,7 +53,10 @@ shell.parse = function(input) {
}
}
else if (mode == "LIMBO") {
if (c != ' ') {
if (c == '"') {
mode = "QUOTE";
}
else if (c != ' ') {
mode = "LITERAL";
stringBuffer += c;
}
@@ -60,6 +64,7 @@ shell.parse = function(input) {
else if (mode == "QUOTE") {
if (c == '"') {
tokens.push(stringBuffer); stringBuffer = "";
mode = "LIMBO";
}
else if (c == '\\') {
mode = "ESCAPE";
@@ -72,14 +77,13 @@ shell.parse = function(input) {
}
// end of the input string
if (i == input.length - 1) {
stringBuffer += c;
tokens.push(stringBuffer);
}
i += 1;
}
if (stringBuffer.length > 0) {
tokens.push(stringBuffer);
}
return tokens;
}
if (exec_args !== undefined) return shell;
@@ -116,8 +120,8 @@ while (true) {
else if (key === 10 || key === 13) {
println();
try {
println("You entered: " + cmdbuf);
let tokens = shell.parse(cmdbuf);
tokens.forEach(function(it) { println(it+"_"); });
}
catch (e) {
printerrln(e);