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librock_afgettoch - accumulate from FILE * into realloc'ed buffer until reach EOF or a specified character
librock_afgettochX - accumulate from FILE * into realloc'ed buffer until reach EOF or a specified character using specified allocator

#License - #Source code - #Example Use -


#include <librock/target/types.c>
#include <librock/astring.h>

    char * *ppasz,
    FILE *f,
    char chStop,


Read characters from f until reach EOF or chStop. All characters plus the chStop (if it appeared) and a NUL terminator are stored into a (re)alloced buffer obtained by calling librock_astrensure()

The return value is the number of characters read and stored. The location of the (possibly moved) buffer is stored at *ppasz.

These functions are part of the Librock allocated string functions. See () for an overview. Since the librock allocated string buffers hold NUL terminated strings, most "read-only" string functions of libc and other libraries, such as strlen(), strchr(), can be used.

As with all librock_astr* functions, the caller must assume the buffer will move, and consider all pointers into the old buffer *ppasz unusable. See the () implementation for a good way to use indexes to avoid pointers which go stale.

The allocation function, librock_astrensure(), makes realloc requests in multiples of a fixed size. The primary benefit of this strategy is to reduce realloc calls by assuming the buffer is at least a minimum size. For this and other reasons, be sure to call only with *ppasz set to 0 or a value obtained from a previous call to one of these functions.

Typical Use

    char *asz =0;
    while(librock_afgettoch(&asz,f,'\f')) {
        /* Process asz Here */


librock_afgettochX allows supplying a realloc function on a per-call basis. (Useful for memory pooling, optimization, and more),
    char * *ppasz,
    FILE *f,
    char chStop,
    void *(*reallocfn)(void *,size_t)


  fgetc() feof()
  librock_astrensureX(), librock_astrfreeX()

   realloc()                  // used by librock_afgettoch


  Copyright 1998-2000 Forrest J. Cavalier III,
  Open-source under MIT license. NO WARRANTY. Copies must retain this block.
  License text in <librock/license/mit.txt> librock_LIDESC_HC=cc598307414a9997b32b60a2e7a8e7c6a13d6438

Source Code

./text/astring.c (implementation, plus source of this manual page)

This software is part of Librock

Rapid reuse, without rework. Details
This page copyright (C) 2002-2004 Forrest J. Cavalier III, d-b-a Mib Software, Saylorsburg PA 18353, USA

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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