54         izstream() : m_fp(0) {}  in izstream()
55         izstream(FILE* fp) : m_fp(0) { open(fp); }  in izstream()
56         izstream(const char* name) : m_fp(0) { open(name); }  in izstream()
66             if (m_fp) close();  in open()
67             m_fp = ::gzopen(name, "rb");  in open()
72             if (m_fp) close();  in open()
73             m_fp = ::gzdopen(fileno(fp), "rb");  in open()
81             int r = ::gzclose(m_fp);  in close()
82             m_fp = 0; return r;  in close()
88             return ::gzread(m_fp, buf, len);  in read()
98             return ::gzerror(m_fp, errnum);  in error()
101         gzFile fp() { return m_fp; }  in fp()
104         gzFile m_fp;
158         ozstream() : m_fp(0), m_os(0) {  in ozstream()
161             : m_fp(0), m_os(0) {
165             : m_fp(0), m_os(0) {
180             if (m_fp) close();
181             m_fp = ::gzopen(name, mode);
190             if (m_fp) close();
191             m_fp = ::gzdopen(fileno(fp), mode);
200                 ::gzwrite(m_fp, m_os->str(), m_os->pcount());  in close()
203             int r = ::gzclose(m_fp); m_fp = 0; return r;  in close()
209             return ::gzwrite(m_fp, (voidp) buf, len);  in write()
221             return ::gzflush(m_fp, _flush);  in flush()
231             return ::gzerror(m_fp, errnum);  in error()
234         gzFile fp() { return m_fp; }  in fp()
248                 ::gzwrite(m_fp, m_os->str(), m_os->pcount());  in os_flush()
254         gzFile m_fp;