1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
export abstract class TerminalSnooper<T> {
abstract onData(data: string): void;
abstract onWrite(data: string): void;
callback: (data: T) => void;
constructor(callback: (data: T) => void) {
this.callback = callback;
}
}
function stripAnsi(data: string) {
const pattern = [
"[\\u001B\\u009B][[\\]()#;?]*(?:(?:(?:(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]+)*|[a-zA-Z\\d]+(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*)?\\u0007)",
"(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PR-TZcf-ntqry=><~]))",
].join("|");
let regex = new RegExp(pattern, "g");
return data.replace(regex, "");
}
export class CommandCaptureSnooper extends TerminalSnooper<string> {
stdinBuffer = "";
cursorPos = 0;
stdoutHasInterrupted = false;
static RETURN_KEY = "\r";
static DEL_KEY = "\x7F";
static UP_KEY = "\x1B[A";
static DOWN_KEY = "\x1B[B";
static RIGHT_KEY = "\x1B[C";
static LEFT_KEY = "\x1B[D";
static CONTROL_KEYS = new Set([
CommandCaptureSnooper.RETURN_KEY,
CommandCaptureSnooper.DEL_KEY,
CommandCaptureSnooper.UP_KEY,
CommandCaptureSnooper.DOWN_KEY,
CommandCaptureSnooper.RIGHT_KEY,
CommandCaptureSnooper.LEFT_KEY,
]);
private _cursorLeft() {
this.cursorPos = Math.max(0, this.cursorPos - 1);
}
private _cursorRight() {
this.cursorPos = Math.min(this.stdinBuffer.length, this.cursorPos + 1);
}
// Known issue: This does not handle autocomplete.
// Would be preferable to find a way that didn't require this all, just parsing by command prompt
// but that has it's own challenges
private handleControlKey(data: string): void {
switch (data) {
case CommandCaptureSnooper.DEL_KEY:
this.stdinBuffer =
this.stdinBuffer.slice(0, this.cursorPos - 1) +
this.stdinBuffer.slice(this.cursorPos);
this._cursorLeft();
break;
case CommandCaptureSnooper.RETURN_KEY:
this.callback(this.stdinBuffer);
this.stdinBuffer = "";
break;
case CommandCaptureSnooper.UP_KEY:
case CommandCaptureSnooper.DOWN_KEY:
this.stdinBuffer = "";
break;
case CommandCaptureSnooper.RIGHT_KEY:
this._cursorRight();
break;
case CommandCaptureSnooper.LEFT_KEY:
this._cursorLeft();
break;
}
}
onWrite(data: string): void {
if (CommandCaptureSnooper.CONTROL_KEYS.has(data)) {
this.handleControlKey(data);
} else {
this.stdinBuffer =
this.stdinBuffer.substring(0, this.cursorPos) +
data +
this.stdinBuffer.substring(this.cursorPos);
this._cursorRight();
}
}
onData(data: string): void {}
}
export class PythonTracebackSnooper extends TerminalSnooper<string> {
static tracebackStart = "Traceback (most recent call last):";
tracebackBuffer = "";
static tracebackEnd = (buf: string): string | undefined => {
let lines = buf.split("\n");
for (let i = 0; i < lines.length; i++) {
if (
lines[i].startsWith(" File") &&
i + 2 < lines.length &&
lines[i + 2][0] != " "
) {
return lines.slice(0, i + 3).join("\n");
}
}
return undefined;
};
override onWrite(data: string): void {}
override onData(data: string): void {
let strippedData = stripAnsi(data);
// Strip fully blank and squiggle lines
strippedData = strippedData
.split("\n")
.filter((line) => line.trim().length > 0 && line.trim() !== "~~^~~")
.join("\n");
// Snoop for traceback
let idx = strippedData.indexOf(PythonTracebackSnooper.tracebackStart);
if (idx >= 0) {
this.tracebackBuffer = strippedData.substr(idx);
} else if (this.tracebackBuffer.length > 0) {
this.tracebackBuffer += "\n" + strippedData;
}
// End of traceback, send to webview
if (this.tracebackBuffer.length > 0) {
let wholeTraceback = PythonTracebackSnooper.tracebackEnd(
this.tracebackBuffer
);
if (wholeTraceback) {
this.callback(wholeTraceback);
this.tracebackBuffer = "";
}
}
}
}
|
