143 lines
3.5 KiB
JavaScript
143 lines
3.5 KiB
JavaScript
'use strict';
|
|
|
|
var path = require('path');
|
|
var inspect = require('util').inspect;
|
|
|
|
function assertPath(path) {
|
|
if (typeof path !== 'string') {
|
|
throw new TypeError('Path must be a string. Received ' + inspect(path));
|
|
}
|
|
}
|
|
|
|
function posix(path) {
|
|
assertPath(path);
|
|
if (path.length === 0)
|
|
return '.';
|
|
var code = path.charCodeAt(0);
|
|
var hasRoot = (code === 47/*/*/);
|
|
var end = -1;
|
|
var matchedSlash = true;
|
|
for (var i = path.length - 1; i >= 1; --i) {
|
|
code = path.charCodeAt(i);
|
|
if (code === 47/*/*/) {
|
|
if (!matchedSlash) {
|
|
end = i;
|
|
break;
|
|
}
|
|
} else {
|
|
// We saw the first non-path separator
|
|
matchedSlash = false;
|
|
}
|
|
}
|
|
|
|
if (end === -1)
|
|
return hasRoot ? '/' : '.';
|
|
if (hasRoot && end === 1)
|
|
return '//';
|
|
return path.slice(0, end);
|
|
}
|
|
|
|
function win32(path) {
|
|
assertPath(path);
|
|
var len = path.length;
|
|
if (len === 0)
|
|
return '.';
|
|
var rootEnd = -1;
|
|
var end = -1;
|
|
var matchedSlash = true;
|
|
var offset = 0;
|
|
var code = path.charCodeAt(0);
|
|
|
|
// Try to match a root
|
|
if (len > 1) {
|
|
if (code === 47/*/*/ || code === 92/*\*/) {
|
|
// Possible UNC root
|
|
|
|
rootEnd = offset = 1;
|
|
|
|
code = path.charCodeAt(1);
|
|
if (code === 47/*/*/ || code === 92/*\*/) {
|
|
// Matched double path separator at beginning
|
|
var j = 2;
|
|
var last = j;
|
|
// Match 1 or more non-path separators
|
|
for (; j < len; ++j) {
|
|
code = path.charCodeAt(j);
|
|
if (code === 47/*/*/ || code === 92/*\*/)
|
|
break;
|
|
}
|
|
if (j < len && j !== last) {
|
|
// Matched!
|
|
last = j;
|
|
// Match 1 or more path separators
|
|
for (; j < len; ++j) {
|
|
code = path.charCodeAt(j);
|
|
if (code !== 47/*/*/ && code !== 92/*\*/)
|
|
break;
|
|
}
|
|
if (j < len && j !== last) {
|
|
// Matched!
|
|
last = j;
|
|
// Match 1 or more non-path separators
|
|
for (; j < len; ++j) {
|
|
code = path.charCodeAt(j);
|
|
if (code === 47/*/*/ || code === 92/*\*/)
|
|
break;
|
|
}
|
|
if (j === len) {
|
|
// We matched a UNC root only
|
|
return path;
|
|
}
|
|
if (j !== last) {
|
|
// We matched a UNC root with leftovers
|
|
|
|
// Offset by 1 to include the separator after the UNC root to
|
|
// treat it as a "normal root" on top of a (UNC) root
|
|
rootEnd = offset = j + 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if ((code >= 65/*A*/ && code <= 90/*Z*/) ||
|
|
(code >= 97/*a*/ && code <= 122/*z*/)) {
|
|
// Possible device root
|
|
|
|
code = path.charCodeAt(1);
|
|
if (path.charCodeAt(1) === 58/*:*/) {
|
|
rootEnd = offset = 2;
|
|
if (len > 2) {
|
|
code = path.charCodeAt(2);
|
|
if (code === 47/*/*/ || code === 92/*\*/)
|
|
rootEnd = offset = 3;
|
|
}
|
|
}
|
|
}
|
|
} else if (code === 47/*/*/ || code === 92/*\*/) {
|
|
return path[0];
|
|
}
|
|
|
|
for (var i = len - 1; i >= offset; --i) {
|
|
code = path.charCodeAt(i);
|
|
if (code === 47/*/*/ || code === 92/*\*/) {
|
|
if (!matchedSlash) {
|
|
end = i;
|
|
break;
|
|
}
|
|
} else {
|
|
// We saw the first non-path separator
|
|
matchedSlash = false;
|
|
}
|
|
}
|
|
|
|
if (end === -1) {
|
|
if (rootEnd === -1)
|
|
return '.';
|
|
else
|
|
end = rootEnd;
|
|
}
|
|
return path.slice(0, end);
|
|
}
|
|
|
|
module.exports = process.platform === 'win32' ? win32 : posix;
|
|
module.exports.posix = posix;
|
|
module.exports.win32 = win32;
|