diff options
Diffstat (limited to 'node_modules/path-dirname/index.js')
-rw-r--r-- | node_modules/path-dirname/index.js | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/node_modules/path-dirname/index.js b/node_modules/path-dirname/index.js new file mode 100644 index 0000000..ed67817 --- /dev/null +++ b/node_modules/path-dirname/index.js @@ -0,0 +1,143 @@ +'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; |