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SDI
2026-07-15 18:05:12 +09:00
commit 12e4f17b62
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import header from "./src/rules/header.js";
export default {
rules: { header },
rulesConfig: { header: 0 },
};
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{
"name": "@ufb/eslint-plugin-header",
"private": true,
"type": "module",
"main": "./index.js"
}
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export function commentParser(text) {
text = text.trim();
if (text.substr(0, 2) === '//') {
return [
'line',
text.split(/\r?\n/).map(function (line) {
return line.substr(2);
}),
];
} else if (text.substr(0, 2) === '/*' && text.substr(-2) === '*/') {
return ['block', text.substring(2, text.length - 2)];
} else {
throw new Error(
'Could not parse comment file: the file must contain either just line comments (//) or a single block comment (/* ... */)',
);
}
}
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import fs from "fs";
import os from "os";
// @ts-ignore
function commentParser(text) {
text = text.trim();
if (text.substr(0, 2) === "//") {
return [
"line",
// @ts-ignore
text.split(/\r?\n/).map(function (line) {
return line.substr(2);
}),
];
} else if (text.substr(0, 2) === "/*" && text.substr(-2) === "*/") {
return ["block", text.substring(2, text.length - 2)];
} else {
throw new Error(
"Could not parse comment file: the file must contain either just line comments (//) or a single block comment (/* ... */)"
);
}
}
// @ts-ignore
function isPattern(object) {
return (
typeof object === "object" &&
Object.prototype.hasOwnProperty.call(object, "pattern")
);
}
// @ts-ignore
function match(actual, expected) {
if (expected.test) {
return expected.test(actual);
} else {
return expected === actual;
}
}
// @ts-ignore
function excludeShebangs(comments) {
// @ts-ignore
return comments.filter(function (comment) {
return comment.type !== "Shebang";
});
}
// Returns either the first block comment or the first set of line comments that
// are ONLY separated by a single newline. Note that this does not actually
// check if they are at the start of the file since that is already checked by
// hasHeader().
// @ts-ignore
function getLeadingComments(context, node) {
var all = excludeShebangs(
context
.getSourceCode()
.getAllComments(node.body.length ? node.body[0] : node)
);
if (all[0].type.toLowerCase() === "block") {
return [all[0]];
}
for (var i = 1; i < all.length; ++i) {
var txt = context
.getSourceCode()
.getText()
.slice(all[i - 1].range[1], all[i].range[0]);
if (!txt.match(/^(\r\n|\r|\n)$/)) {
break;
}
}
return all.slice(0, i);
}
// @ts-ignore
function genCommentBody(commentType, textArray, eol, numNewlines) {
var eols = eol.repeat(numNewlines);
if (commentType === "block") {
return "/*" + textArray.join(eol) + "*/" + eols;
} else {
return "//" + textArray.join(eol + "//") + eols;
}
}
// @ts-ignore
function genCommentsRange(context, comments, eol) {
var start = comments[0].range[0];
var end = comments.slice(-1)[0].range[1];
if (context.getSourceCode().text[end] === eol) {
end += eol.length;
}
return [start, end];
}
// @ts-ignore
function genPrependFixer(commentType, node, headerLines, eol, numNewlines) {
// @ts-ignore
return function (fixer) {
return fixer.insertTextBefore(
node,
genCommentBody(commentType, headerLines, eol, numNewlines)
);
};
}
function genReplaceFixer(
// @ts-ignore
commentType,
// @ts-ignore
context,
// @ts-ignore
leadingComments,
// @ts-ignore
headerLines,
// @ts-ignore
eol,
// @ts-ignore
numNewlines
) {
// @ts-ignore
return function (fixer) {
return fixer.replaceTextRange(
genCommentsRange(context, leadingComments, eol),
genCommentBody(commentType, headerLines, eol, numNewlines)
);
};
}
// @ts-ignore
function findSettings(options) {
var lastOption = options.length > 0 ? options[options.length - 1] : null;
if (
typeof lastOption === "object" &&
!Array.isArray(lastOption) &&
lastOption !== null &&
!Object.prototype.hasOwnProperty.call(lastOption, "pattern")
) {
return lastOption;
}
return null;
}
// @ts-ignore
function getEOL(options) {
var settings = findSettings(options);
if (settings && settings.lineEndings === "unix") {
return "\n";
}
if (settings && settings.lineEndings === "windows") {
return "\r\n";
}
return os.EOL;
}
// @ts-ignore
function hasHeader(src) {
if (src.substr(0, 2) === "#!") {
var m = src.match(/(\r\n|\r|\n)/);
if (m) {
src = src.slice(m.index + m[0].length);
}
}
return src.substr(0, 2) === "/*" || src.substr(0, 2) === "//";
}
// @ts-ignore
function matchesLineEndings(src, num) {
for (var j = 0; j < num; ++j) {
var m = src.match(/^(\r\n|\r|\n)/);
if (m) {
src = src.slice(m.index + m[0].length);
} else {
return false;
}
}
return true;
}
export default {
meta: {
type: "layout",
fixable: "whitespace",
schema: {
$ref: "#/definitions/options",
definitions: {
commentType: {
type: "string",
enum: ["block", "line"],
},
line: {
anyOf: [
{
type: "string",
},
{
type: "object",
properties: {
pattern: {
type: "string",
},
template: {
type: "string",
},
},
required: ["pattern"],
additionalProperties: false,
},
],
},
headerLines: {
anyOf: [
{
$ref: "#/definitions/line",
},
{
type: "array",
items: {
$ref: "#/definitions/line",
},
},
],
},
numNewlines: {
type: "integer",
minimum: 0,
},
settings: {
type: "object",
properties: {
lineEndings: {
type: "string",
enum: ["unix", "windows"],
},
},
additionalProperties: false,
},
options: {
anyOf: [
{
type: "array",
minItems: 1,
maxItems: 2,
items: [{ type: "string" }, { $ref: "#/definitions/settings" }],
},
{
type: "array",
minItems: 2,
maxItems: 3,
items: [
{ $ref: "#/definitions/commentType" },
{ $ref: "#/definitions/headerLines" },
{ $ref: "#/definitions/settings" },
],
},
{
type: "array",
minItems: 3,
maxItems: 4,
items: [
{ $ref: "#/definitions/commentType" },
{ $ref: "#/definitions/headerLines" },
{ $ref: "#/definitions/numNewlines" },
{ $ref: "#/definitions/settings" },
],
},
],
},
},
},
},
// @ts-ignore
create: function (context) {
var options = context.options;
var numNewlines = options.length > 2 ? options[2] : 1;
var eol = getEOL(options);
// If just one option then read comment from file
if (
options.length === 1 ||
(options.length === 2 && findSettings(options))
) {
var text = fs.readFileSync(context.options[0], "utf8");
options = commentParser(text);
}
var commentType = options[0].toLowerCase();
// @ts-ignore
var headerLines,
// @ts-ignore
fixLines = [];
// If any of the lines are regular expressions, then we can't
// automatically fix them. We set this to true below once we
// ensure none of the lines are of type RegExp
var canFix = false;
if (Array.isArray(options[1])) {
canFix = true;
headerLines = options[1].map(function (line) {
var isRegex = isPattern(line);
// Can only fix regex option if a template is also provided
if (isRegex && !line.template) {
canFix = false;
}
fixLines.push(line.template || line);
return isRegex ? new RegExp(line.pattern) : line;
});
} else if (isPattern(options[1])) {
var line = options[1];
headerLines = [new RegExp(line.pattern)];
fixLines.push(line.template || line);
// Same as above for regex and template
canFix = !!line.template;
} else {
canFix = true;
headerLines = options[1].split(/\r?\n/);
fixLines = headerLines;
}
return {
// @ts-ignore
Program: function (node) {
if (!hasHeader(context.getSourceCode().getText())) {
context.report({
loc: node.loc,
message: "missing header",
// @ts-ignore
fix: genPrependFixer(commentType, node, fixLines, eol, numNewlines),
});
} else {
var leadingComments = getLeadingComments(context, node);
if (!leadingComments.length) {
context.report({
loc: node.loc,
message: "missing header",
fix: canFix
? // @ts-ignore
genPrependFixer(commentType, node, fixLines, eol, numNewlines)
: null,
});
} else if (leadingComments[0].type.toLowerCase() !== commentType) {
context.report({
loc: node.loc,
message: "header should be a {{commentType}} comment",
data: {
commentType: commentType,
},
fix: canFix
? genReplaceFixer(
commentType,
context,
leadingComments,
// @ts-ignore
fixLines,
eol,
numNewlines
)
: null,
});
} else {
if (commentType === "line") {
if (leadingComments.length < headerLines.length) {
context.report({
loc: node.loc,
message: "incorrect header",
fix: canFix
? genReplaceFixer(
commentType,
context,
leadingComments,
// @ts-ignore
fixLines,
eol,
numNewlines
)
: null,
});
return;
}
for (var i = 0; i < headerLines.length; i++) {
// @ts-ignore
if (!match(leadingComments[i].value, headerLines[i])) {
context.report({
loc: node.loc,
message: "incorrect header",
fix: canFix
? genReplaceFixer(
commentType,
context,
leadingComments,
// @ts-ignore
fixLines,
eol,
numNewlines
)
: null,
});
return;
}
}
var postLineHeader = context
.getSourceCode()
.text.substr(
leadingComments[headerLines.length - 1].range[1],
numNewlines * 2
);
if (!matchesLineEndings(postLineHeader, numNewlines)) {
context.report({
loc: node.loc,
message: "no newline after header",
fix: canFix
? genReplaceFixer(
commentType,
context,
leadingComments,
// @ts-ignore
fixLines,
eol,
numNewlines
)
: null,
});
}
} else {
// if block comment pattern has more than 1 line, we also split the comment
var leadingLines = [leadingComments[0].value];
if (headerLines.length > 1) {
leadingLines = leadingComments[0].value.split(/\r?\n/);
}
var hasError = false;
if (leadingLines.length > headerLines.length) {
hasError = true;
}
for (i = 0; !hasError && i < headerLines.length; i++) {
// @ts-ignore
if (!match(leadingLines[i], headerLines[i])) {
hasError = true;
}
}
if (hasError) {
if (canFix && headerLines.length > 1) {
// @ts-ignore
fixLines = [fixLines.join(eol)];
}
context.report({
loc: node.loc,
message: "incorrect header",
fix: canFix
? genReplaceFixer(
commentType,
context,
leadingComments,
// @ts-ignore
fixLines,
eol,
numNewlines
)
: null,
});
} else {
var postBlockHeader = context
.getSourceCode()
.text.substr(leadingComments[0].range[1], numNewlines * 2);
if (!matchesLineEndings(postBlockHeader, numNewlines)) {
context.report({
loc: node.loc,
message: "no newline after header",
fix: canFix
? genReplaceFixer(
commentType,
context,
leadingComments,
// @ts-ignore
fixLines,
eol,
numNewlines
)
: null,
});
}
}
}
}
}
},
};
},
};