forked from renovatebot/renovate
/
extract.ts
185 lines (176 loc) · 5.06 KB
/
extract.ts
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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
import * as datasourceGithubTags from '../../datasource/github-tags';
import { logger } from '../../logger';
import { SkipReason } from '../../types';
import type { PackageDependency, PackageFile } from '../types';
import { isSpace, removeComments, skip } from './util';
function parseSha256(idx: number, content: string): string | null {
let i = idx;
i += 'sha256'.length;
i = skip(i, content, (c) => isSpace(c));
if (content[i] !== '"' && content[i] !== "'") {
return null;
}
i += 1;
const j = skip(i, content, (c) => c !== '"' && c !== "'");
const sha256 = content.slice(i, j);
return sha256;
}
function extractSha256(content: string): string | null {
const sha256RegExp = /(^|\s)sha256(\s)/;
let i = content.search(sha256RegExp);
if (isSpace(content[i])) {
i += 1;
}
return parseSha256(i, content);
}
function parseUrl(idx: number, content: string): string | null {
let i = idx;
i += 'url'.length;
i = skip(i, content, (c) => isSpace(c));
const chr = content[i];
if (chr !== '"' && chr !== "'") {
return null;
}
i += 1;
const j = skip(i, content, (c) => c !== '"' && c !== "'" && !isSpace(c));
const url = content.slice(i, j);
return url;
}
function extractUrl(content: string): string | null {
const urlRegExp = /(^|\s)url(\s)/;
let i = content.search(urlRegExp);
// content.search() returns -1 if not found
if (i === -1) {
return null;
}
/* istanbul ignore else */
if (isSpace(content[i])) {
i += 1;
}
return parseUrl(i, content);
}
export interface UrlPathParsedResult {
currentValue: string;
ownerName: string;
repoName: string;
}
export function parseUrlPath(urlStr: string): UrlPathParsedResult | null {
if (!urlStr) {
return null;
}
try {
const url = new URL(urlStr);
if (url.hostname !== 'github.com') {
return null;
}
let s = url.pathname.split('/');
s = s.filter((val) => val);
const ownerName = s[0];
const repoName = s[1];
let currentValue: string;
if (s[2] === 'archive') {
currentValue = s[3];
const targz = currentValue.slice(
currentValue.length - 7,
currentValue.length
);
if (targz === '.tar.gz') {
currentValue = currentValue.substring(0, currentValue.length - 7);
}
} else if (s[2] === 'releases' && s[3] === 'download') {
currentValue = s[4];
}
if (!currentValue) {
return null;
}
return { currentValue, ownerName, repoName };
} catch (_) {
return null;
}
}
/* This function parses the "class className < Formula" header
and returns the className and index of the character just after the header */
function parseClassHeader(idx: number, content: string): string | null {
let i = idx;
i += 'class'.length;
i = skip(i, content, (c) => isSpace(c));
// Skip all non space and non '<' characters
let j = skip(i, content, (c) => !isSpace(c) && c !== '<');
const className = content.slice(i, j);
i = j;
// Skip spaces
i = skip(i, content, (c) => isSpace(c));
if (content[i] === '<') {
i += 1;
} else {
return null;
} // Skip spaces
i = skip(i, content, (c) => isSpace(c));
// Skip non-spaces
j = skip(i, content, (c) => !isSpace(c));
if (content.slice(i, j) !== 'Formula') {
return null;
}
return className;
}
function extractClassName(content: string): string | null {
const classRegExp = /(^|\s)class\s/;
let i = content.search(classRegExp);
if (isSpace(content[i])) {
i += 1;
}
return parseClassHeader(i, content);
}
// TODO: Maybe check if quotes/double-quotes are balanced (#9591)
export function extractPackageFile(content: string): PackageFile | null {
logger.trace('extractPackageFile()');
/*
1. match "class className < Formula"
2. extract className
3. extract url field (get depName from url)
4. extract sha256 field
*/
const cleanContent = removeComments(content);
const className = extractClassName(cleanContent);
if (!className) {
logger.debug('Invalid class definition');
return null;
}
const url = extractUrl(cleanContent);
if (!url) {
logger.debug('Invalid URL field');
}
const urlPathResult = parseUrlPath(url);
let skipReason: SkipReason;
let currentValue: string = null;
let ownerName: string = null;
let repoName: string = null;
if (urlPathResult) {
currentValue = urlPathResult.currentValue;
ownerName = urlPathResult.ownerName;
repoName = urlPathResult.repoName;
} else {
logger.debug('Error: Unsupported URL field');
skipReason = SkipReason.UnsupportedUrl;
}
const sha256 = extractSha256(cleanContent);
if (!sha256 || sha256.length !== 64) {
logger.debug('Error: Invalid sha256 field');
skipReason = SkipReason.InvalidSha256;
}
const dep: PackageDependency = {
depName: `${ownerName}/${repoName}`,
managerData: { ownerName, repoName, sha256, url },
currentValue,
datasource: datasourceGithubTags.id,
};
if (skipReason) {
dep.skipReason = skipReason;
if (skipReason === 'unsupported-url') {
dep.depName = className;
dep.datasource = null;
}
}
const deps = [dep];
return { deps };
}