qdebugstream.cpp

QT4的utils库源码包.解压后运行./configure配置,然后make.使用时在.pro文件中加入两行:LIBS+=-L$$(CPPLIBS)-lutils及INCLUDEPATH+=$$(C

#include "qdebugstream.h"
#include <qstring.h>

QDebugStream::QDebugStream(std::ostream &stream)
        : m_Stream(stream) {
    m_OldBuf = stream.rdbuf();
    stream.rdbuf(this);
}


int QDebugStream::overflow(int_type v) {
    if (v == '\n') {
        qDebug(m_String.c_str());
        m_String.clear();
    } else
        m_String.push_back(v);
    return v;
}

std::streamsize QDebugStream::xsputn(const char *p, std::streamsize n) {
    m_String.append(p, p + n);

    unsigned int pos = 0;
    while (pos != std::string::npos) {
        pos = m_String.find('\n');
        if (pos != std::string::npos) {
            std::string tmp(m_String.begin(), m_String.begin() + pos);
            qDebug(tmp.c_str());
            m_String.erase(m_String.begin(), m_String.begin() + pos + 1);
        }
    }

    return n;
}

QDebugStream::~QDebugStream() {
    // output anything that is left
    if (!m_String.empty())
        qDebug(m_String.c_str());

    m_Stream.rdbuf(m_OldBuf);
}