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avoiding toLowerCase() calls

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This commit is contained in:
Eugene Zhuravlev
2015-02-13 20:38:13 +01:00
parent d1fcfdbdef
commit bebd453db9
1 changed files with 21 additions and 8 deletions
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platform/util-rt/src/com/intellij/openapi/util/io/FileUtilRt.java
+21 -8
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@@ -210,18 +210,14 @@ public class FileUtilRt {
}
@Nullable
public static String getRelativePath(@NotNull String basePath,
@NotNull String filePath,
final char separator,
final boolean caseSensitive) {
public static String getRelativePath(@NotNull String basePath, @NotNull String filePath, final char separator, final boolean caseSensitive) {
basePath = ensureEnds(basePath, separator);
String basePathToCompare = caseSensitive ? basePath : basePath.toLowerCase();
String filePathToCompare = caseSensitive ? filePath : filePath.toLowerCase();
if (basePathToCompare.equals(ensureEnds(filePathToCompare, separator))) return ".";
if (basePath.equals(ensureEnds(filePath, separator))) return ".";
int len = 0;
int lastSeparatorIndex = 0; // need this for cases like this: base="/temp/abc/base" and file="/temp/ab"
while (len < filePath.length() && len < basePath.length() && filePathToCompare.charAt(len) == basePathToCompare.charAt(len)) {
final CharComparingStrategy charComparingStrategy = caseSensitive? CharComparingStrategy.IDENTITY : CharComparingStrategy.CASE_INSENSITIVE;
while (len < filePath.length() && len < basePath.length() && charComparingStrategy.charsEqual(filePath.charAt(len), basePath.charAt(len))) {
if (basePath.charAt(len) == separator) {
lastSeparatorIndex = len;
}
@@ -798,4 +794,21 @@ public class FileUtilRt {
return 2500 * KILOBYTE;
}
}
private interface CharComparingStrategy {
CharComparingStrategy IDENTITY = new CharComparingStrategy() {
@Override
public boolean charsEqual(char ch1, char ch2) {
return ch1 == ch2;
}
};
CharComparingStrategy CASE_INSENSITIVE = new CharComparingStrategy() {
@Override
public boolean charsEqual(char ch1, char ch2) {
return StringUtilRt.charsEqualIgnoreCase(ch1, ch2);
}
};
boolean charsEqual(char ch1, char ch2);
}
}