const char& TextFileIterator::operator *() const {
if (mLineIndex == mFile->getLineCount()) {
return *"\0";
}
TextLine *line = mFile->mLines[mLineIndex];
if (mLineFeedIndex != -1) {
const char *lfBytes = line->getLineFeed();
assert((size_t) mLineFeedIndex < sizeof(lfBytes) - 1);
return lfBytes[mLineFeedIndex];
}
return (*line)[mColumnIndex];
}
TextFileIterator& TextFileIterator::operator ++() {
TextLine *line = mFile->mLines[mLineIndex];
if (line->size() - 1 > mColumnIndex) {
mColumnIndex++;
} else {
if (mFile->mLines.size() > mLineIndex) {
bool needChangeLine = false;
const char *lfBytes = line->getLineFeed();
int lfBytesLen = (int) sizeof(lfBytes) - 1;
mLineFeedIndex++;
if (mLineFeedIndex == lfBytesLen) {
mLineFeedIndex = -1;
needChangeLine = true;
}
if (needChangeLine) {
mLineIndex++;
mColumnIndex = 0;
}
}
}
return *this;
}
