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git-svn-id: svn://svn.cc65.org/cc65/trunk@1942 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz
2003-02-08 16:32:55 +00:00
parent b28cf4cfd8
commit bbb70a2d47
12 changed files with 1700 additions and 0 deletions
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108
src/co65/fileio.c Normal file
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/*****************************************************************************/
/* */
/* fileio.c */
/* */
/* Binary file I/O for the co65 object file converter */
/* */
/* */
/* */
/* (C) 1998-2003 Ullrich von Bassewitz */
/* R<>merstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <string.h>
/* common */
#include "xmalloc.h"
/* ld65 */
#include "error.h"
#include "fileio.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
unsigned Read8 (FILE* F)
/* Read an 8 bit value from the file */
{
int C = getc (F);
if (C == EOF) {
Error ("Read error (file corrupt?)");
}
return C;
}
unsigned Read16 (FILE* F)
/* Read a 16 bit value from the file */
{
unsigned Lo = Read8 (F);
unsigned Hi = Read8 (F);
return (Hi << 8) | Lo;
}
unsigned long Read24 (FILE* F)
/* Read a 24 bit value from the file */
{
unsigned long Lo = Read16 (F);
unsigned long Hi = Read8 (F);
return (Hi << 16) | Lo;
}
unsigned long Read32 (FILE* F)
/* Read a 32 bit value from the file */
{
unsigned long Lo = Read16 (F);
unsigned long Hi = Read16 (F);
return (Hi << 16) | Lo;
}
void* ReadData (FILE* F, void* Data, unsigned Size)
/* Read data from the file */
{
/* Explicitly allow reading zero bytes */
if (Size > 0) {
if (fread (Data, 1, Size, F) != Size) {
Error ("Read error (file corrupt?)");
}
}
return Data;
}