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path: minor refactoring

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1) Consolidate nested if statements if possible
     `if (foo) { if bar () { /* do stuff */ } }`)
   to reduce indentation depth.
2) Remove obsolete else cases to reduce indentation.

PR-URL: https://github.com/nodejs/node/pull/25278
Reviewed-By: Michaël Zasso <targos@protonmail.com>
This commit is contained in:
Ruben Bridgewater 2019-01-27 15:23:21 +01:00
parent a019d7bd0b
commit f59fdd9d65
No known key found for this signature in database
GPG Key ID: F07496B3EB3C1762
1 changed files with 61 additions and 72 deletions
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133
lib/path.js
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@ -206,20 +206,16 @@ const win32 = {
} else {
rootEnd = 1;
}
} else if (isWindowsDeviceRoot(code)) {
} else if (isWindowsDeviceRoot(code) &&
path.charCodeAt(1) === CHAR_COLON) {
// Possible device root
if (path.charCodeAt(1) === CHAR_COLON) {
device = path.slice(0, 2);
rootEnd = 2;
if (len > 2) {
if (isPathSeparator(path.charCodeAt(2))) {
// Treat separator following drive name as an absolute path
// indicator
isAbsolute = true;
rootEnd = 3;
}
}
device = path.slice(0, 2);
rootEnd = 2;
if (len > 2 && isPathSeparator(path.charCodeAt(2))) {
// Treat separator following drive name as an absolute path
// indicator
isAbsolute = true;
rootEnd = 3;
}
}
} else if (isPathSeparator(code)) {
@ -567,26 +563,23 @@ const win32 = {
const resolvedPath = win32.resolve(path);
if (resolvedPath.length >= 3) {
if (resolvedPath.charCodeAt(0) === CHAR_BACKWARD_SLASH) {
// Possible UNC root
if (resolvedPath.length <= 2)
return path;
if (resolvedPath.charCodeAt(1) === CHAR_BACKWARD_SLASH) {
const code = resolvedPath.charCodeAt(2);
if (code !== CHAR_QUESTION_MARK && code !== CHAR_DOT) {
// Matched non-long UNC root, convert the path to a long UNC path
return '\\\\?\\UNC\\' + resolvedPath.slice(2);
}
}
} else if (isWindowsDeviceRoot(resolvedPath.charCodeAt(0))) {
// Possible device root
if (resolvedPath.charCodeAt(1) === CHAR_COLON &&
resolvedPath.charCodeAt(2) === CHAR_BACKWARD_SLASH) {
// Matched device root, convert the path to a long UNC path
return '\\\\?\\' + resolvedPath;
if (resolvedPath.charCodeAt(0) === CHAR_BACKWARD_SLASH) {
// Possible UNC root
if (resolvedPath.charCodeAt(1) === CHAR_BACKWARD_SLASH) {
const code = resolvedPath.charCodeAt(2);
if (code !== CHAR_QUESTION_MARK && code !== CHAR_DOT) {
// Matched non-long UNC root, convert the path to a long UNC path
return `\\\\?\\UNC\\${resolvedPath.slice(2)}`;
}
}
} else if (isWindowsDeviceRoot(resolvedPath.charCodeAt(0)) &&
resolvedPath.charCodeAt(1) === CHAR_COLON &&
resolvedPath.charCodeAt(2) === CHAR_BACKWARD_SLASH) {
// Matched device root, convert the path to a long UNC path
return `\\\\?\\${resolvedPath}`;
}
return path;
@ -749,29 +742,27 @@ const win32 = {
else if (end === -1)
end = path.length;
return path.slice(start, end);
} else {
for (i = path.length - 1; i >= start; --i) {
if (isPathSeparator(path.charCodeAt(i))) {
// If we reached a path separator that was not part of a set of path
// separators at the end of the string, stop now
if (!matchedSlash) {
start = i + 1;
break;
}
} else if (end === -1) {
// We saw the first non-path separator, mark this as the end of our
// path component
matchedSlash = false;
end = i + 1;
}
}
if (end === -1)
return '';
return path.slice(start, end);
}
},
for (i = path.length - 1; i >= start; --i) {
if (isPathSeparator(path.charCodeAt(i))) {
// If we reached a path separator that was not part of a set of path
// separators at the end of the string, stop now
if (!matchedSlash) {
start = i + 1;
break;
}
} else if (end === -1) {
// We saw the first non-path separator, mark this as the end of our
// path component
matchedSlash = false;
end = i + 1;
}
}
if (end === -1)
return '';
return path.slice(start, end);
},
extname(path) {
validateString(path, 'path');
@ -1256,29 +1247,27 @@ const posix = {
else if (end === -1)
end = path.length;
return path.slice(start, end);
} else {
for (i = path.length - 1; i >= 0; --i) {
if (path.charCodeAt(i) === CHAR_FORWARD_SLASH) {
// If we reached a path separator that was not part of a set of path
// separators at the end of the string, stop now
if (!matchedSlash) {
start = i + 1;
break;
}
} else if (end === -1) {
// We saw the first non-path separator, mark this as the end of our
// path component
matchedSlash = false;
end = i + 1;
}
}
if (end === -1)
return '';
return path.slice(start, end);
}
},
for (i = path.length - 1; i >= 0; --i) {
if (path.charCodeAt(i) === CHAR_FORWARD_SLASH) {
// If we reached a path separator that was not part of a set of path
// separators at the end of the string, stop now
if (!matchedSlash) {
start = i + 1;
break;
}
} else if (end === -1) {
// We saw the first non-path separator, mark this as the end of our
// path component
matchedSlash = false;
end = i + 1;
}
}
if (end === -1)
return '';
return path.slice(start, end);
},
extname(path) {
validateString(path, 'path');