27 lines
515 B
C++
27 lines
515 B
C++
#include "stream_buffer.h"
|
|
|
|
StreamBuffer::StreamBuffer(int sock, size_t size)
|
|
: Buffer(size),
|
|
sock_(sock) {}
|
|
|
|
bool StreamBuffer::BufferAtLeast(size_t len) {
|
|
CHECK_LE(start_ + len, size_);
|
|
|
|
while (ReadMaxLen() < len) {
|
|
auto read_len = read(sock_, WritePtr(), WriteMaxLen());
|
|
PCHECK(read_len >= 0);
|
|
if (read_len == 0) {
|
|
return false;
|
|
}
|
|
Wrote(read_len);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
const char *StreamBuffer::Read(size_t len) {
|
|
if (!BufferAtLeast(len)) {
|
|
return nullptr;
|
|
}
|
|
return Buffer::Read(len);
|
|
}
|