codekingpro/portable-devtools

1"use strict";
2Object.defineProperty(exports, "__esModule", { value: true });
3exports.ReadEntry = void 0;
4const minipass_1 = require("minipass");
5const normalize_windows_path_js_1 = require("./normalize-windows-path.js");
6class ReadEntry extends minipass_1.Minipass {
7    extended;
8    globalExtended;
9    header;
10    startBlockSize;
11    blockRemain;
12    remain;
13    type;
14    meta = false;
15    ignore = false;
16    path;
17    mode;
18    uid;
19    gid;
20    uname;
21    gname;
22    size = 0;
23    mtime;
24    atime;
25    ctime;
26    linkpath;
27    dev;
28    ino;
29    nlink;
30    invalid = false;
31    absolute;
32    unsupported = false;
33    constructor(header, ex, gex) {
34        super({});
35        // read entries always start life paused.  this is to avoid the
36        // situation where Minipass's auto-ending empty streams results
37        // in an entry ending before we're ready for it.
38        this.pause();
39        this.extended = ex;
40        this.globalExtended = gex;
41        this.header = header;
42        /* c8 ignore start */
43        this.remain = header.size ?? 0;
44        /* c8 ignore stop */
45        this.startBlockSize = 512 * Math.ceil(this.remain / 512);
46        this.blockRemain = this.startBlockSize;
47        this.type = header.type;
48        switch (this.type) {
49            case 'File':
50            case 'OldFile':
51            case 'Link':
52            case 'SymbolicLink':
53            case 'CharacterDevice':
54            case 'BlockDevice':
55            case 'Directory':
56            case 'FIFO':
57            case 'ContiguousFile':
58            case 'GNUDumpDir':
59                break;
60            case 'NextFileHasLongLinkpath':
61            case 'NextFileHasLongPath':
62            case 'OldGnuLongPath':
63            case 'GlobalExtendedHeader':
64            case 'ExtendedHeader':
65            case 'OldExtendedHeader':
66                this.meta = true;
67                break;
68            // NOTE: gnutar and bsdtar treat unrecognized types as 'File'
69            // it may be worth doing the same, but with a warning.
70            default:
71                this.ignore = true;
72        }
73        /* c8 ignore start */
74        if (!header.path) {
75            throw new Error('no path provided for tar.ReadEntry');
76        }
77        /* c8 ignore stop */
78        this.path = (0, normalize_windows_path_js_1.normalizeWindowsPath)(header.path);
79        this.mode = header.mode;
80        if (this.mode) {
81            this.mode = this.mode & 0o7777;
82        }
83        this.uid = header.uid;
84        this.gid = header.gid;
85        this.uname = header.uname;
86        this.gname = header.gname;
87        this.size = this.remain;
88        this.mtime = header.mtime;
89        this.atime = header.atime;
90        this.ctime = header.ctime;
91        /* c8 ignore start */
92        this.linkpath =
93            header.linkpath ? (0, normalize_windows_path_js_1.normalizeWindowsPath)(header.linkpath) : undefined;
94        /* c8 ignore stop */
95        this.uname = header.uname;
96        this.gname = header.gname;
97        if (ex) {
98            this.#slurp(ex);
99        }
100        if (gex) {
101            this.#slurp(gex, true);
102        }
103    }
104    write(data) {
105        const writeLen = data.length;
106        if (writeLen > this.blockRemain) {
107            throw new Error('writing more to entry than is appropriate');
108        }
109        const r = this.remain;
110        const br = this.blockRemain;
111        this.remain = Math.max(0, r - writeLen);
112        this.blockRemain = Math.max(0, br - writeLen);
113        if (this.ignore) {
114            return true;
115        }
116        if (r >= writeLen) {
117            return super.write(data);
118        }
119        // r < writeLen
120        return super.write(data.subarray(0, r));
121    }
122    #slurp(ex, gex = false) {
123        if (ex.path)
124            ex.path = (0, normalize_windows_path_js_1.normalizeWindowsPath)(ex.path);
125        if (ex.linkpath)
126            ex.linkpath = (0, normalize_windows_path_js_1.normalizeWindowsPath)(ex.linkpath);
127        Object.assign(this, Object.fromEntries(Object.entries(ex).filter(([k, v]) => {
128            // we slurp in everything except for the path attribute in
129            // a global extended header, because that's weird. Also, any
130            // null/undefined values are ignored.
131            return !(v === null || v === undefined || (k === 'path' && gex));
132        })));
133    }
134}
135exports.ReadEntry = ReadEntry;
136//# sourceMappingURL=read-entry.js.map