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Fix Trim() method for empty strings and strings only containing spaces. Fixes #7392.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41076 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Clemens Zeidler 2011-03-22 03:05:39 +00:00
parent 6f477364cc
commit 37ffb53fb4
1 changed files with 9 additions and 6 deletions
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15
src/kits/support/String.cpp
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@ -1964,25 +1964,28 @@ BString::CharacterDeescape(char escapeChar)
BString&
BString::Trim()
{
if (Length() <= 0)
return *this;
const char* string = String();
int32 startCount = 0;
while (isspace(string[startCount])) {
while (isspace(string[startCount]))
startCount++;
}
int32 endCount = 0;
while (isspace(string[Length() - endCount - 1])) {
while (isspace(string[Length() - endCount - 1]))
endCount++;
}
if (startCount == 0 && endCount == 0)
return *this;
// We actually need to trim
size_t length = Length() - startCount - endCount;
if (startCount == 0) {
ssize_t length = Length() - startCount - endCount;
if (length < 0)
length = 0;
if (startCount == 0 || length == 0) {
_MakeWritable(length, true);
} else if (_MakeWritable() == B_OK) {
memmove(fPrivateData, fPrivateData + startCount, length);