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export function isAbsolute (path: string): boolean {
return /^(?:\/|[a-z]:)/i.test(normalize(path))
}
export function normalize (path: string): string {
if (!path) {
return ''
}
// 将路径分隔符替换为斜杠
path = path.replace(/\\/g, '/')
// 将多个连续斜杠替换为一个
path = path.replace(/\/+/g, '/')
// 处理 .. 和 .
const parts = path.split('/')
const newParts = []
for (let i = 0; i < parts.length; i++) {
const part = parts[i]
if (part === '..') {
newParts.pop()
} else if (part !== '' && part !== '.') {
newParts.push(part)
}
}
// 重新组合路径
const result = newParts.join('/')
const startWithSlash = path.startsWith('/')
if (startWithSlash) {
return '/' + result
} else {
return result
}
}
export function join (...paths: string[]): string {
if (!paths.length) {
return ''
}
// 将所有路径组合成一个字符串
let result = paths.join('/')
// 规范化路径
result = normalize(result)
// 如果原始路径以斜杠结尾，则结果也以斜杠结尾
const endsWithSlash = paths[paths.length - 1].endsWith('/')
if (endsWithSlash && !result.endsWith('/')) {
return result + '/'
} else {
return result
}
}
export const normalizeRelativePathToAbsolute = (relativePath: string, cwd: string) => {
const absolutePath = isAbsolute(relativePath)
? relativePath
: normalize(join(cwd, relativePath))
return normalize(absolutePath)
}
export const splitPath = (path: string) => {
path = normalize(path)
const frags = path.split('/').filter(v => v)
if (frags[0].endsWith(':')) {
frags[0] = frags[0] + '/'// 分割完是c: -> c:/
}
return frags
}
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