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NAME

SYNOPSIS

#include <librock/mstruct.h>

void
librock_VSBWriteDisable(
    struct librock_VSB_s *v
);

void *
librock_VSBWriteEnable(
    struct librock_VSB_s *v
);

void
librock_VSBSetXA(
    struct librock_VSB_s *v,
    const void *p,int len
);

DESCRIPTION

librock_VSBWriteEnable reallocates the librock_VSB buffer so that librock_VSB calls can modify the buffer contents. Returns non-zero if successful.

Use librock_VSBSetXA() to replace the buffer with one that is already externally allocated. It will be "WriteDisabled."

#ifdef librock_TYPICAL_USE_VSBSetXA
    #include <librock/mstruct.h>
    struct librock_VSB_s *v = librock_VSBalloc();

    librock_VSBSetXA(v,"External Allocation.",10);

    /* Error to call VSBAppend, VSBInsert, or even VSBsz

       when buffer is WriteDisabled.
    librock_VSBAppend(v,"is ",3);
    librock_VSBInsert(v,0,"this ",5);
    printf("%s\n",librock_VSBsz(v));
    */
    printf("%.*s\n",v->inbuf,v->buf);

    librock_VSBfree(v);
#endif

USES

   librock_assert() librock_VSBrealloc()

    free()     // #ifndef librock_fmalloc
    memcpy()   // #ifndef librock_memcpy
   //librock_VSBSetXA uses macros for memory operations
   //librock_memcpy and librock_ffree.  If not defined
   //at compile time, they are set to memcpy() and free()

LICENSE

  Copyright 1998-2002 Forrest J. Cavalier III, http://www.mibsoftware.com
  Licensed under BSD-ish license, NO WARRANTY. Copies must retain this block.
  License text in <librock/license/librock.txt> librock_LIDESC_HC=12440211096131f5976d36be0cddca4cd9152e45

Source Code

Tests and Supported Platform Types

librock_VSBWriteDisable passed tests in tvsbop (Unix/Linux/BSD: 2002/08/08 sys=FreeBSD using gcc)
librock_VSBWriteDisable passed tests in tvsbop_main (WIN32: 2002/08/08 sys=NT 4.0 using MSVC)
librock_VSBWriteEnable passed tests in tvsbop (Unix/Linux/BSD: 2002/08/08 sys=FreeBSD using gcc)
librock_VSBWriteEnable passed tests in tvsbop_main (WIN32: 2002/08/08 sys=NT 4.0 using MSVC)

This software is part of Librock

• Source code which is Open-source, Free (Libre) and free (no cost)
• Namespace limited. All compile-time macros and names visible at link time are prefixed by "librock_". Integrate into your project and expect no name collisions.
• Stable API means new functions get new names so that there is no risk that updating a source file will break existing applications.
• Highly portable, cross-platform, and multithread compatible. Works with many machines, compilers, and operating systems (gcc/MSVC/Windows/Linux/BSD).

Verbatim copying and distribution of this generated page is permitted in any medium provided that no changes are made.
(The source of this manual page may be covered by a more permissive license which allows modifications.)

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