diff options
Diffstat (limited to 'node_modules/memory-fs/lib/normalize.js')
| -rw-r--r-- | node_modules/memory-fs/lib/normalize.js | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/node_modules/memory-fs/lib/normalize.js b/node_modules/memory-fs/lib/normalize.js new file mode 100644 index 00000000..72c3df06 --- /dev/null +++ b/node_modules/memory-fs/lib/normalize.js @@ -0,0 +1,86 @@ +module.exports = function normalize(path) {
+ var parts = path.split(/(\\+|\/+)/);
+ if(parts.length === 1)
+ return path;
+ var result = [];
+ var absolutePathStart = 0;
+ for(var i = 0, sep = false; i < parts.length; i++, sep = !sep) {
+ var part = parts[i];
+ if(i === 0 && /^([A-Z]:)?$/i.test(part)) {
+ result.push(part);
+ absolutePathStart = 2;
+ } else if(sep) {
+ result.push(part[0]);
+ } else if(part === "..") {
+ switch(result.length) {
+ case 0:
+ // i. e. ".." => ".."
+ // i. e. "../a/b/c" => "../a/b/c"
+ result.push(part);
+ break;
+ case 2:
+ // i. e. "a/.." => ""
+ // i. e. "/.." => "/"
+ // i. e. "C:\.." => "C:\"
+ // i. e. "a/../b/c" => "b/c"
+ // i. e. "/../b/c" => "/b/c"
+ // i. e. "C:\..\a\b\c" => "C:\a\b\c"
+ i++;
+ sep = !sep;
+ result.length = absolutePathStart;
+ break;
+ case 4:
+ // i. e. "a/b/.." => "a"
+ // i. e. "/a/.." => "/"
+ // i. e. "C:\a\.." => "C:\"
+ // i. e. "/a/../b/c" => "/b/c"
+ if(absolutePathStart === 0) {
+ result.length -= 3;
+ } else {
+ i++;
+ sep = !sep;
+ result.length = 2;
+ }
+ break;
+ default:
+ // i. e. "/a/b/.." => "/a"
+ // i. e. "/a/b/../c" => "/a/c"
+ result.length -= 3;
+ break;
+ }
+ } else if(part === ".") {
+ switch(result.length) {
+ case 0:
+ // i. e. "." => "."
+ // i. e. "./a/b/c" => "./a/b/c"
+ result.push(part);
+ break;
+ case 2:
+ // i. e. "a/." => "a"
+ // i. e. "/." => "/"
+ // i. e. "C:\." => "C:\"
+ // i. e. "C:\.\a\b\c" => "C:\a\b\c"
+ if(absolutePathStart === 0) {
+ result.length--;
+ } else {
+ i++;
+ sep = !sep;
+ }
+ break;
+ default:
+ // i. e. "a/b/." => "a/b"
+ // i. e. "/a/." => "/"
+ // i. e. "C:\a\." => "C:\"
+ // i. e. "a/./b/c" => "a/b/c"
+ // i. e. "/a/./b/c" => "/a/b/c"
+ result.length--;
+ break;
+ }
+ } else if(part) {
+ result.push(part);
+ }
+ }
+ if(result.length === 1 && /^[A-Za-z]:$/.test(result))
+ return result[0] + "\\";
+ return result.join("");
+};
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