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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import type {
Reader,
Writer,
Seeker,
Closer,
SeekMode,
ReaderSync,
WriterSync,
SeekerSync,
} from "./io.ts";
import { close } from "./ops/resources.ts";
import { read, readSync, write, writeSync } from "./ops/io.ts";
import { seek, seekSync } from "./ops/fs/seek.ts";
export { seek, seekSync } from "./ops/fs/seek.ts";
import {
open as opOpen,
openSync as opOpenSync,
OpenOptions,
} from "./ops/fs/open.ts";
export type { OpenOptions } from "./ops/fs/open.ts";
export function openSync(
path: string | URL,
options: OpenOptions = { read: true },
): File {
checkOpenOptions(options);
const rid = opOpenSync(path, options);
return new File(rid);
}
export async function open(
path: string | URL,
options: OpenOptions = { read: true },
): Promise<File> {
checkOpenOptions(options);
const rid = await opOpen(path, options);
return new File(rid);
}
export function createSync(path: string | URL): File {
return openSync(path, {
read: true,
write: true,
truncate: true,
create: true,
});
}
export function create(path: string | URL): Promise<File> {
return open(path, {
read: true,
write: true,
truncate: true,
create: true,
});
}
export class File
implements
Reader,
ReaderSync,
Writer,
WriterSync,
Seeker,
SeekerSync,
Closer {
constructor(readonly rid: number) {}
write(p: Uint8Array): Promise<number> {
return write(this.rid, p);
}
writeSync(p: Uint8Array): number {
return writeSync(this.rid, p);
}
read(p: Uint8Array): Promise<number | null> {
return read(this.rid, p);
}
readSync(p: Uint8Array): number | null {
return readSync(this.rid, p);
}
seek(offset: number, whence: SeekMode): Promise<number> {
return seek(this.rid, offset, whence);
}
seekSync(offset: number, whence: SeekMode): number {
return seekSync(this.rid, offset, whence);
}
close(): void {
close(this.rid);
}
}
class Stdin implements Reader, ReaderSync, Closer {
readonly rid = 0;
read(p: Uint8Array): Promise<number | null> {
return read(this.rid, p);
}
readSync(p: Uint8Array): number | null {
return readSync(this.rid, p);
}
close(): void {
close(this.rid);
}
}
class Stdout implements Writer, WriterSync, Closer {
readonly rid = 1;
write(p: Uint8Array): Promise<number> {
return write(this.rid, p);
}
writeSync(p: Uint8Array): number {
return writeSync(this.rid, p);
}
close(): void {
close(this.rid);
}
}
export class Stderr implements Writer, WriterSync, Closer {
readonly rid = 2;
write(p: Uint8Array): Promise<number> {
return write(this.rid, p);
}
writeSync(p: Uint8Array): number {
return writeSync(this.rid, p);
}
close(): void {
close(this.rid);
}
}
export const stdin = new Stdin();
export const stdout = new Stdout();
export const stderr = new Stderr();
function checkOpenOptions(options: OpenOptions): void {
if (Object.values(options).filter((val) => val === true).length === 0) {
throw new Error("OpenOptions requires at least one option to be true");
}
if (options.truncate && !options.write) {
throw new Error("'truncate' option requires 'write' option");
}
const createOrCreateNewWithoutWriteOrAppend =
(options.create || options.createNew) && !(options.write || options.append);
if (createOrCreateNewWithoutWriteOrAppend) {
throw new Error(
"'create' or 'createNew' options require 'write' or 'append' option",
);
}
}
|
