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Better Bitmask output operator.

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GitOrigin-RevId: 1640da5cfe0f1d12ef0fc549a0a2c24000625812
This commit is contained in:
levlam 2018-12-28 03:31:29 +03:00
parent 239fd79523
commit b15929f141
1 changed files with 17 additions and 2 deletions
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19
td/telegram/files/FileBitmask.cpp
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@ -131,8 +131,23 @@ int64 Bitmask::size() const {
}
StringBuilder &operator<<(StringBuilder &sb, const Bitmask &mask) {
for (int64 i = 0; i < mask.size(); i++) {
sb << (mask.get(i) ? '1' : '0');
bool prev = 0;
int32 cnt = 0;
for (int64 i = 0; i <= mask.size(); i++) {
bool cur = mask.get(i);
if (cur != prev) { // zeros at the end are intentionally skipped
if (cnt < 5) {
while (cnt > 0) {
sb << (prev ? '1' : '0');
cnt--;
}
} else {
sb << (prev ? '1' : '0') << "(x" << cnt << ')';
cnt = 0;
}
}
prev = cur;
cnt++;
}
return sb;
}