libkern/zlib/gzio.c

421 int ZEXPORT gzread (file, buf, len)
423     voidp buf;
427     Bytef *start = (Bytef*)buf; /* starting point for crc computation */
435     next_out = (Byte*)buf;
436     s->stream.next_out = (Bytef*)buf;
560    read, or a newline character is read and transferred to buf, or an
563       gzgets returns buf, or Z_NULL in case of error.
567 char * ZEXPORT gzgets(file, buf, len)
569     char *buf;
572     char *b = buf;
573     if (buf == Z_NULL || len <= 0) return Z_NULL;
575     while (--len > 0 && gzread(file, buf, 1) == 1 && *buf++ != '\n') ;
576     *buf = '\0';
577     return b == buf && len > 0 ? Z_NULL : b;
586 int ZEXPORT gzwrite (file, buf, len)
588     voidpc buf;
595     s->stream.next_in = (Bytef*)buf;
616     s->crc = z_crc32(s->crc, (const Bytef *)buf, len);
632     char buf[Z_PRINTF_BUFSIZE];
636     buf[sizeof(buf) - 1] = 0;
640     (void)vsprintf(buf, format, va);
642     for (len = 0; len < sizeof(buf); len++)
643         if (buf[len] == 0) break;
645     len = vsprintf(buf, format, va);
650     (void)vsnprintf(buf, sizeof(buf), format, va);
652     len = strlen(buf);
654     len = vsnprintf(buf, sizeof(buf), format, va);
658     if (len <= 0 || len >= (int)sizeof(buf) || buf[sizeof(buf) - 1] != 0)
660     return gzwrite(file, buf, (unsigned)len);
671     char buf[Z_PRINTF_BUFSIZE];
674     buf[sizeof(buf) - 1] = 0;
677     sprintf(buf, format, a1, a2, a3, a4, a5, a6, a7, a8,
679     for (len = 0; len < sizeof(buf); len++)
680         if (buf[len] == 0) break;
682     len = sprintf(buf, format, a1, a2, a3, a4, a5, a6, a7, a8,
687     snprintf(buf, sizeof(buf), format, a1, a2, a3, a4, a5, a6, a7, a8,
689     len = strlen(buf);
691     len = snprintf(buf, sizeof(buf), format, a1, a2, a3, a4, a5, a6, a7, a8,
695     if (len <= 0 || len >= sizeof(buf) || buf[sizeof(buf) - 1] != 0)
697     return gzwrite(file, buf, len);