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/*
Copyright (C) 2003, 2010 - Wolfire Games
Copyright (C) 2010-2017 - Lugaru contributors (see AUTHORS file)
This file is part of Lugaru.
Lugaru is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Lugaru is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Lugaru. If not, see <http://www.gnu.org/licenses/>.
*/
#include "binio.h"
#include "private.h"
#include <stdlib.h>
struct BinIOPackContext {
uint8_t *buffer;
va_list args;
};
static void BinIOPack(void *context, int type, int byte_order, int count)
{
struct BinIOPackContext *ctx = (struct BinIOPackContext*)context;
if (count == -1) {
switch (type) {
case BinIO_TYPE_IGNORE_BYTE: {
ctx->buffer += 1;
}
break;
case BinIO_TYPE_BYTE: {
uint8_t value = va_arg(ctx->args, int);
BinIOConvert1(BinIO_HOST_BYTE_ORDER, byte_order, (const uint8_t *)&value, ctx->buffer, 1);
ctx->buffer += 1;
}
break;
case BinIO_TYPE_INT16: {
uint16_t value = va_arg(ctx->args, int);
BinIOConvert2(BinIO_HOST_BYTE_ORDER, byte_order, (const uint8_t *)&value, ctx->buffer, 1);
ctx->buffer += 2;
}
break;
case BinIO_TYPE_INT32: {
int value = va_arg(ctx->args, int);
BinIOConvert4(BinIO_HOST_BYTE_ORDER, byte_order, (const uint8_t *)&value, ctx->buffer, 1);
ctx->buffer += 4;
}
break;
case BinIO_TYPE_INT64: {
uint64_t value = va_arg(ctx->args, uint64_t);
BinIOConvert8(BinIO_HOST_BYTE_ORDER, byte_order, (const uint8_t *)&value, ctx->buffer, 1);
ctx->buffer += 8;
}
break;
case BinIO_TYPE_FLOAT32: {
float32_t value = (float32_t)va_arg(ctx->args, double);
BinIOConvert4(BinIO_HOST_BYTE_ORDER, byte_order, (const uint8_t *)&value, ctx->buffer, 1);
ctx->buffer += 4;
}
break;
case BinIO_TYPE_FLOAT64: {
float64_t value = va_arg(ctx->args, float64_t);
BinIOConvert8(BinIO_HOST_BYTE_ORDER, byte_order, (const uint8_t *)&value, ctx->buffer, 1);
ctx->buffer += 8;
}
break;
}
} else {
switch (type) {
case BinIO_TYPE_IGNORE_BYTE:
ctx->buffer += 1 * count;
break;
case BinIO_TYPE_BYTE:
BinIOConvert1(BinIO_HOST_BYTE_ORDER, byte_order, va_arg(ctx->args, uint8_t *), ctx->buffer, count);
ctx->buffer += 1 * count;
break;
case BinIO_TYPE_INT16:
BinIOConvert2(BinIO_HOST_BYTE_ORDER, byte_order, va_arg(ctx->args, uint8_t *), ctx->buffer, count);
ctx->buffer += 2 * count;
break;
case BinIO_TYPE_INT32:
BinIOConvert4(BinIO_HOST_BYTE_ORDER, byte_order, va_arg(ctx->args, uint8_t *), ctx->buffer, count);
ctx->buffer += 4 * count;
break;
case BinIO_TYPE_INT64:
BinIOConvert8(BinIO_HOST_BYTE_ORDER, byte_order, va_arg(ctx->args, uint8_t *), ctx->buffer, count);
ctx->buffer += 8 * count;
break;
case BinIO_TYPE_FLOAT32:
BinIOConvert4(BinIO_HOST_BYTE_ORDER, byte_order, va_arg(ctx->args, uint8_t *), ctx->buffer, count);
ctx->buffer += 4 * count;
break;
case BinIO_TYPE_FLOAT64:
BinIOConvert8(BinIO_HOST_BYTE_ORDER, byte_order, va_arg(ctx->args, uint8_t *), ctx->buffer, count);
ctx->buffer += 8 * count;
break;
}
}
}
extern void packf(const char *format, ...)
{
va_list args;
va_start(args, format);
vfpackf(stdout, format, args);
va_end(args);
}
extern void spackf(void *buffer, const char *format, ...)
{
va_list args;
va_start(args, format);
vspackf(buffer, format, args);
va_end(args);
}
extern void fpackf(FILE *file, const char *format, ...)
{
va_list args;
va_start(args, format);
vfpackf(file, format, args);
va_end(args);
}
extern void vspackf(void *buffer, const char *format, va_list args)
{
struct BinIOFormatCursor cursor;
struct BinIOPackContext context;
BinIOInitFormatCursor(&cursor, format);
context.buffer = (unsigned char *)buffer;
va_copy(context.args, args);
while (BinIONextChar(&context, &cursor, BinIOPack)) {}
va_end(context.args);
}
extern void vfpackf(FILE *file, const char *format, va_list args)
{
size_t n_bytes = BinIOFormatByteCount(format);
void* buffer = malloc(n_bytes);
vspackf(buffer, format, args);
fwrite(buffer, n_bytes, 1, file);
free(buffer);
}
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