Source

gd-libgd / src / gd_io.c

Full commit
pajoye 5640f76 
mattias 7037a60 


mattias 77a6348 
mattias 7037a60 

mattias 77a6348 
mattias 7037a60 
pierre 1cdea74 
pierre 084ba37 
pierre b0243fe 
mattias 5a8c22a 
pierre b0243fe 

pierre 084ba37 









pajoye 4d61d42 
mattias 7037a60 
pajoye 4d61d42 

pierre 084ba37 



mattias 7037a60 
pierre 084ba37 
mattias 7037a60 



pierre 084ba37 

mattias 7037a60 
pierre 084ba37 
mattias 7037a60 
pierre 084ba37 

mattias 7037a60 
pierre 084ba37 
mattias 7037a60 
pierre 084ba37 

mattias 7037a60 
pierre 084ba37 
mattias 7037a60 



pierre 084ba37 

mattias 7037a60 
pierre 084ba37 
mattias 7037a60 





pierre 084ba37 

mattias 7037a60 
pierre 084ba37 
mattias 7037a60 
pierre 084ba37 

mattias 7037a60 


pajoye 5640f76 
mattias 7037a60 



pierre 084ba37 
mattias 7037a60 
pierre 084ba37 
mattias 7037a60 
pierre 084ba37 

mattias 7037a60 
pierre 084ba37 
mattias 7037a60 
















pierre 084ba37 

pajoye 5640f76 
scottmac b39a6d1 
scottmac fae607c 



scottmac b39a6d1 

scottmac fae607c 


scottmac b39a6d1 

scottmac fae607c 
scottmac b39a6d1 





mattias 7037a60 
pierre 084ba37 
mattias 7037a60 






























pierre 084ba37 

pajoye 5640f76 
scottmac b39a6d1 
scottmac fae607c 

mattias 7037a60 
scottmac fae607c 


scottmac b39a6d1 



scottmac fae607c 


scottmac b39a6d1 



scottmac fae607c 


scottmac b39a6d1 



scottmac fae607c 


scottmac b39a6d1 


scottmac fae607c 

scottmac b39a6d1 




mattias 7037a60 
pierre 084ba37 
mattias 7037a60 


pierre 084ba37 

mattias 7037a60 
pierre 084ba37 
mattias 7037a60 
pierre 084ba37 

mattias 7037a60 
pierre 084ba37 
mattias 7037a60 


pierre 084ba37 

mattias 7037a60 
pierre 084ba37 
mattias 7037a60 


pierre 084ba37 
/*
 * io.c
 *
 * Implements the simple I/O 'helper' routines.
 *
 * Not really essential, but these routines were used extensively in GD,
 * so they were moved here. They also make IOCtx calls look better...
 *
 * Written (or, at least, moved) 1999, Philip Warner.
 */

#ifdef HAVE_CONFIG_H
#	include "config.h"
#endif

#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "gd.h"

/* Use this for commenting out debug-print statements. */
/* Just use the first '#define' to allow all the prints... */
/*#define IO_DBG(s) (s) */
#define IO_DBG(s)

#define GD_IO_EOF_CHK(r) \
	if(r == EOF) { \
		return 0; \
	}

/*
 * Write out a word to the I/O context pointer
 */
void Putword(int w, gdIOCtx *ctx)
{
	unsigned char buf[2];
	buf[0] = w & 0xff;
	buf[1] = (w / 256) & 0xff;
	(ctx->putBuf)(ctx, (char *)buf, 2);
}

void Putchar(int c, gdIOCtx *ctx)
{
	(ctx->putC)(ctx, c & 0xff);
}

void gdPutC(const unsigned char c, gdIOCtx *ctx)
{
	(ctx->putC)(ctx, c);
}

void gdPutWord (int w, gdIOCtx *ctx)
{
	IO_DBG(printf("Putting word...\n"));
	(ctx->putC)(ctx, (unsigned char)(w >> 8));
	(ctx->putC)(ctx, (unsigned char)(w & 0xFF));
	IO_DBG(printf("put.\n"));
}

void gdPutInt (int w, gdIOCtx *ctx)
{
	IO_DBG(printf("Putting int...\n"));
	(ctx->putC)(ctx, (unsigned char) (w >> 24));
	(ctx->putC)(ctx, (unsigned char) ((w >> 16) & 0xFF));
	(ctx->putC)(ctx, (unsigned char) ((w >> 8) & 0xFF));
	(ctx->putC)(ctx, (unsigned char) (w & 0xFF));
	IO_DBG(printf("put.\n"));
}

int gdGetC(gdIOCtx *ctx)
{
	return ((ctx->getC)(ctx));
}

int gdGetByte(int *result, gdIOCtx *ctx)
{
	int r;

	r = (ctx->getC)(ctx);
	if(r == EOF) {
		return 0;
	}

	*result = r;

	return 1;
}

int gdGetWord(int *result, gdIOCtx *ctx)
{
	int r;

	r = (ctx->getC)(ctx);
	if(r == EOF) {
		return 0;
	}

	*result = r << 8;

	r = (ctx->getC)(ctx);
	if(r == EOF) {
		return 0;
	}

	*result += r;

	return 1;
}

int gdGetWordLSB(signed short int *result, gdIOCtx *ctx)
{
	unsigned int high = 0, low = 0;
	low = (ctx->getC) (ctx);
	if (low == EOF) {
 		return 0;
	}

	high = (ctx->getC) (ctx);
	if (high == EOF) {
 		return 0;
	}

	if (result) {
		*result = (high << 8) | low;
	}

	return 1;
}

int gdGetInt(int *result, gdIOCtx *ctx)
{
	int r;

	r = (ctx->getC)(ctx);
	if(r == EOF) {
		return 0;
	}

	*result = r << 24;

	r = (ctx->getC)(ctx);
	if(r == EOF) {
		return 0;
	}

	*result += r << 16;

	r = (ctx->getC)(ctx);
	if(r == EOF) {
		return 0;
	}

	*result += r << 8;

	r = (ctx->getC)(ctx);
	if(r == EOF) {
		return 0;
	}

	*result += r;

	return 1;
}

int gdGetIntLSB(signed int *result, gdIOCtx *ctx)
{
	int c = 0;
	unsigned int r = 0;

	c = (ctx->getC) (ctx);
	if (c == EOF) {
 		return 0;
	}
	r |= (c << 24);
	r >>= 8;

	c = (ctx->getC) (ctx);
	if (c == EOF) {
 		return 0;
	}
	r |= (c << 24);
	r >>= 8;

	c = (ctx->getC) (ctx);
	if (c == EOF) {
 		return 0;
	}
	r |= (c << 24);
	r >>= 8;

	c = (ctx->getC) (ctx);
	if (c == EOF) {
 		return 0;
	}
	r |= (c << 24);

	if (result) {
		*result = (signed int)r;
	}

	return 1;
}

int gdPutBuf(const void *buf, int size, gdIOCtx *ctx)
{
	IO_DBG(printf("Putting buf...\n"));
	return (ctx->putBuf)(ctx, buf, size);
	IO_DBG(printf("put.\n"));
}

int gdGetBuf(void *buf, int size, gdIOCtx *ctx)
{
	return (ctx->getBuf)(ctx, buf, size);
}

int gdSeek(gdIOCtx *ctx, const int pos)
{
	IO_DBG(printf("Seeking...\n"));
	return ((ctx->seek)(ctx, pos));
	IO_DBG(printf("Done.\n"));
}

long gdTell(gdIOCtx *ctx)
{
	IO_DBG(printf("Telling...\n"));
	return ((ctx->tell)(ctx));
	IO_DBG(printf("told.\n"));
}