1berry/nodejs
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

path: refactor code for clarity

Browse Source 
This moves a condition inside of a for loop which can only be
triggered at the very end of the for loop outside of the loop. That
way the for loop itself is much simpler and easier to understand and
the code itself is less indented which should increase the
readability.

It also refactors some `var` to `let` and `const`.

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 16:07:00 +01:00
parent 7cbe29eb4d
commit 0fd5b458be
No known key found for this signature in database
GPG Key ID: F07496B3EB3C1762
1 changed files with 63 additions and 65 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

64
lib/path.js
View File

@ -478,17 +478,30 @@ const win32 = {
const toLen = toEnd - toStart; const toLen = toEnd - toStart;
// Compare paths to find the longest common path from root // Compare paths to find the longest common path from root
var length = (fromLen < toLen ? fromLen : toLen); const length = fromLen < toLen ? fromLen : toLen;
var lastCommonSep = -1; let lastCommonSep = -1;
var i = 0; let i = 0;
for (; i <= length; ++i) { for (; i < length; i++) {
if (i === length) { const fromCode = from.charCodeAt(fromStart + i);
if (fromCode !== to.charCodeAt(toStart + i))
break;
else if (fromCode === CHAR_BACKWARD_SLASH)
lastCommonSep = i;
}
// We found a mismatch before the first common path separator was seen, so
// return the original `to`.
if (i !== length) {
if (lastCommonSep === -1)
return toOrig;
} else {
if (toLen > length) { if (toLen > length) {
if (to.charCodeAt(toStart + i) === CHAR_BACKWARD_SLASH) { if (to.charCodeAt(toStart + i) === CHAR_BACKWARD_SLASH) {
// We get here if `from` is the exact base path for `to`. // We get here if `from` is the exact base path for `to`.
// For example: from='C:\\foo\\bar'; to='C:\\foo\\bar\\baz' // For example: from='C:\\foo\\bar'; to='C:\\foo\\bar\\baz'
return toOrig.slice(toStart + i + 1); return toOrig.slice(toStart + i + 1);
} else if (i === 2) { }
if (i === 2) {
// We get here if `from` is the device root. // We get here if `from` is the device root.
// For example: from='C:\\'; to='C:\\foo' // For example: from='C:\\'; to='C:\\foo'
return toOrig.slice(toStart + i); return toOrig.slice(toStart + i);
@ -505,20 +518,6 @@ const win32 = {
lastCommonSep = 3; lastCommonSep = 3;
} }
} }
break;
}
var fromCode = from.charCodeAt(fromStart + i);
var toCode = to.charCodeAt(toStart + i);
if (fromCode !== toCode)
break;
else if (fromCode === CHAR_BACKWARD_SLASH)
lastCommonSep = i;
}
// We found a mismatch before the first common path separator was seen, so
// return the original `to`.
if (i !== length && lastCommonSep === -1) {
return toOrig;
} }
let out = ''; let out = '';
@ -1079,17 +1078,24 @@ const posix = {
const toLen = (toEnd - toStart); const toLen = (toEnd - toStart);
// Compare paths to find the longest common path from root // Compare paths to find the longest common path from root
var length = (fromLen < toLen ? fromLen : toLen); const length = (fromLen < toLen ? fromLen : toLen);
var lastCommonSep = -1; let lastCommonSep = -1;
var i = 0; let i = 0;
for (; i <= length; ++i) { for (; i < length; i++) {
const fromCode = from.charCodeAt(fromStart + i);
if (fromCode !== to.charCodeAt(toStart + i))
break;
else if (fromCode === CHAR_FORWARD_SLASH)
lastCommonSep = i;
}
if (i === length) { if (i === length) {
if (toLen > length) { if (toLen > length) {
if (to.charCodeAt(toStart + i) === CHAR_FORWARD_SLASH) { if (to.charCodeAt(toStart + i) === CHAR_FORWARD_SLASH) {
// We get here if `from` is the exact base path for `to`. // We get here if `from` is the exact base path for `to`.
// For example: from='/foo/bar'; to='/foo/bar/baz' // For example: from='/foo/bar'; to='/foo/bar/baz'
return to.slice(toStart + i + 1); return to.slice(toStart + i + 1);
} else if (i === 0) { }
if (i === 0) {
// We get here if `from` is the root // We get here if `from` is the root
// For example: from='/'; to='/foo' // For example: from='/'; to='/foo'
return to.slice(toStart + i); return to.slice(toStart + i);
@ -1105,14 +1111,6 @@ const posix = {
lastCommonSep = 0; lastCommonSep = 0;
} }
} }
break;
}
var fromCode = from.charCodeAt(fromStart + i);
var toCode = to.charCodeAt(toStart + i);
if (fromCode !== toCode)
break;
else if (fromCode === CHAR_FORWARD_SLASH)
lastCommonSep = i;
} }
var out = ''; var out = '';