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path: root/support/dktools/dk4strmu.c
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/*
Copyright (C) 2016-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/

/*
	WARNING: This file was generated by the dkct program (see
	http://dktools.sourceforge.net/ for details).
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4strmu.ctr
*/

/**	@file dk4strmu.c The dk4strmu module.
*/


#line 238 "dk4strmu.ctr"

#include "dk4conf.h"

#if DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif

#include "dk4strmu.h"
#include "dk4mai8dbl.h"
#include "dk4mem.h"


int
dk4stream_unser_u32(uint32_t *ptr, dk4_stream_t *strm, dk4_er_t *erp)
{
	unsigned char	buf[8];
	size_t			sz		= 4;
	unsigned long	res		= 0UL;
	int				back	= 0;

#if	DK4_USE_ASSERT
	assert(NULL != strm);
	assert(NULL != ptr);
#endif
	if ((NULL != ptr) && (NULL != strm)) {
		if (0 < dk4stream_read(buf, &sz, strm, erp)) {
			if (4 == sz) {
				res =
				(
					( (unsigned long)(buf[0]))        & 0x000000FFUL
				)
				| (
					(((unsigned long)(buf[1])) <<  8) & 0x0000FF00UL
				)
				| (
					(((unsigned long)(buf[2])) << 16) & 0x00FF0000UL
				)
				| (
					(((unsigned long)(buf[3])) << 24) & 0xFF000000UL
				);
				*ptr = (uint32_t)res;
				back = 1;
			}
			else {
				dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
			}
		}
		else {
			/* ERROR: Read failed, already reported */
		}
	}
	else {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	}
	return back;
}



int
dk4stream_unser_i32(int32_t *ptr, dk4_stream_t *strm, dk4_er_t *erp)
{
	uint32_t		res	= 0UL;
	int				back	= 0;

#if	DK4_USE_ASSERT
	assert(NULL != strm);
	assert(NULL != ptr);
#endif
	if (NULL != ptr) {
		back = dk4stream_unser_u32(&res, strm, erp);
		if (0 < back) {
			*ptr = (int32_t)res;
		}
	}
	else {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	}
	return back;
}




int
dk4stream_unser_u16(uint16_t *ptr, dk4_stream_t *strm, dk4_er_t *erp)
{
	unsigned char	buf[8];
	size_t			sz		= 2;
	unsigned 		res		= 0U;
	int				back	= 0;

#if	DK4_USE_ASSERT
	assert(NULL != strm);
	assert(NULL != ptr);
#endif
	if ((NULL != ptr) && (NULL != strm)) {
		if (0 < dk4stream_read(buf, &sz, strm, erp)) {
			if (2 == sz) {
				res =
				(
					( (unsigned)(buf[0]))        & 0x00FFU
				)
				| (
					(((unsigned)(buf[1])) <<  8) & 0xFF00U
				);
				*ptr = (uint16_t)res;
				back = 1;
			}
			else {
				dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
			}
		}
		else {
			/* ERROR: Read failed, already reported */
		}
	}
	else {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	}
	return back;
}



int
dk4stream_unser_i16(int16_t *ptr, dk4_stream_t *strm, dk4_er_t *erp)
{
	uint16_t		res	= 0UL;
	int				back	= 0;

#if	DK4_USE_ASSERT
	assert(NULL != strm);
	assert(NULL != ptr);
#endif
	if (NULL != ptr) {
		back = dk4stream_unser_u16(&res, strm, erp);
		if (0 < back) {
			*ptr = (int16_t)res;
		}
	}
	else {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	}
	return back;
}



int
dk4stream_unser_u8(uint8_t *ptr, dk4_stream_t *strm, dk4_er_t *erp)
{
	unsigned char	buf[8];
	size_t			sz		= 1;
	int				back	= 0;

#if	DK4_USE_ASSERT
	assert(NULL != strm);
	assert(NULL != ptr);
#endif
	if ((NULL != ptr) && (NULL != strm)) {
		if (0 < dk4stream_read(buf, &sz, strm, erp)) {
			if (1 == sz) {
				*ptr = (uint8_t)(buf[0]);
				back = 1;
			}
			else {
				dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
			}
		}
		else {
			/* ERROR: Read failed, already reported */
		}
	}
	else {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	}
	return back;
}



int
dk4stream_unser_i8(int8_t *ptr, dk4_stream_t *strm, dk4_er_t *erp)
{
	uint8_t		res	= 0UL;
	int			back	= 0;

#if	DK4_USE_ASSERT
	assert(NULL != strm);
	assert(NULL != ptr);
#endif
	if (NULL != ptr) {
		back = dk4stream_unser_u8(&res, strm, erp);
		if (0 < back) {
			*ptr = (int8_t)res;
		}
	}
	else {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	}
	return back;
}



int
dk4stream_unser_string(char **strptr, dk4_stream_t *strm, dk4_er_t *erp)
{
	char		*np		= NULL;
	size_t		 sz		= 0;
	int			 back	= 0;
	int			 res	= 0;
	uint16_t	 sl		= 0;

#if	DK4_USE_ASSERT
	assert(NULL != strm);
	assert(NULL != strptr);
#endif
	if ((NULL != strptr) && (NULL != strm)) {
		res = dk4stream_unser_u16(&sl, strm, erp);
		if (0 < res) {
			if (0U < sl) {
				np = dk4mem_new(char, (size_t)sl, erp);
				if (NULL != np) {
					sz = (size_t)sl;
					back = dk4stream_read(np, &sz, strm, erp);
					if (0 < back) {
						back = 0;
						if (sz == (size_t)sl) {
							if ('\0' == np[sz - 1]) {
								back = 1;
							}
							else {
								/* ERROR: Missing delimiter */
								dk4error_set_simple_error_code(
									erp, DK4_E_SYNTAX
								);
								dk4mem_free(np);
								np = NULL;
							}
						}
						else {
							/* ERROR: Wrong number of bytes */
							dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
							dk4mem_free(np);
							np = NULL;
						}
					}
					else {
						/* ERROR: Read attempt failed */
						dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
						dk4mem_free(np);
						np = NULL;
					}
				}
				else {
					/* ERROR: Memory, already reported */
				}
			}
			else {
				/* ERROR: Length is zero */
				back = 1;
#if 0
				dk4error_set_simple_error_code(erp, DK4_E_NOT_FOUND);
#endif
			}
		}
		else {
			/* ERROR: Failed to read string length, already reported */
		}
	}
	else {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	}
	if (NULL != strptr) {
		*strptr = np;
	}
	return back;
}



int
dk4stream_unser_double(double *ptr, dk4_stream_t *strm, dk4_er_t *erp)
{
	char		 buf[16*sizeof(double)];
	const char	*ep		= NULL;
	double		 d		= 0.0;
	size_t		 szb	= sizeof(buf);
	size_t		 sz		= 0;
	int			 back	= 0;
	uint16_t	 sl		= 0;

#if	DK4_USE_ASSERT
	assert(NULL != strm);
	assert(NULL != ptr);
#endif
	if ((NULL != ptr) && (NULL != strm)) {
		if (0 < dk4stream_unser_u16(&sl, strm, erp)) {
			if (0U == sl) {
				/* Easy variant for 0.0 */
				*ptr = 0.0;
				back = 1;
			}
			else {
				if (szb >= (size_t)sl) {
					sz = (size_t)sl;
					if (0 < dk4stream_read(buf, &sz, strm, erp)) {
						if (sz == (size_t)sl) {
							if ('\0' == buf[sz - 1]) {
								back = dk4ma_input_c8_double(
									&d, buf, &ep, 0, erp
								);
								if (0 < back) {
									*ptr = d;
								}
								else {
									/* ERROR: Conversion failed, reported */
								}
							}
							else {
								/* ERROR: Not 0x00-terminated */
								dk4error_set_simple_error_code(
									erp, DK4_E_SYNTAX
								);
							}
						}
						else {
							/* ERROR: Too few bytes */
							dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
						}
					}
					else {
						/* ERROR: Failed to read */
						dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
					}
				}
				else {
					/* ERROR: String too long */
					dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
				}
			}
		}
		else {
			/* ERROR: Failed to read length, already reported */
		}
	}
	else {
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	}
	return back;
}



/* vim: set ai sw=4 ts=4 : */