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6-Jan-2004
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meo_util - Memory Operations

The MEO_UTIL functions perform various operations on memory regions.

The meoDump() functions generate VMS-style dumps of arbitrary regions of memory. Each line of output includes the address of the memory being dumped, the data (formatted in octal, decimal, or hexadecimal), and the ASCII equivalent of the data:

    ...
    00000060:  60616263 64656667 68696A6B 6C6D6E6F  "`abcdefghijklmno"
    00000070:  70717273 74757677 78797A7B 7C7D7E7F  "pqrstuvwxyz{|}~."
    00000080:  80818283 84858687 88898A8B 8C8D8E8F  "................"
    ...

The MEO_UTIL package also provides a simple means of saving the contents of an arbitrary memory region to a file:

    #include  <stdio.h>				-- Standard I/O definitions.
    #include  "meo_util.h"			-- Memory operations.
    char  oldBuffer[1234] ;
    ...
    meoSave (oldBuffer, sizeof oldBuffer, "buffer.dat", 0) ;

The contents of a file can be loaded into an existing region of memory:

    char  *newBuffer = oldBuffer ;
    int  numBytes = sizeof oldBuffer ;
    ...
    meoLoad ("fileName", 0, &newBuffer, &numBytes) ;

or into memory dynamically allocated by meoLoad():

    char  *newBuffer = NULL ;
    int  numBytes ;
    ...
    meoLoad ("fileName", 0, &newBuffer, &numBytes) ;
    ... use the new buffer ...
    free (newBuffer) ;

Public Procedures

meoDump() - outputs an ASCII dump of a memory region to a file.
meoDumpD() - outputs a decimal ASCII dump to a file.
meoDumpO() - outputs an octal ASCII dump to a file.
meoDumpT() - outputs a text ASCII dump to a file.
meoDumpX() - outputs a hexadecimal ASCII dump to a file.
meoLoad() - loads the contents of a file into memory.
meoSave() - saves the contents of memory to a file.

Source Files

meo_util.c
meo_util.h

(See libgpl for the complete source, including support routines and build files.)


Alex Measday  /  E-mail