path: root/support/dktools/dk4strmu.c

/*
	WARNING: This file was generated by dkct.
	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
*/

/*
Copyright (C) 2016-2017, Dirk Krause

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
  to endorse or promote products derived from this software without specific
  prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

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


#line 222 "dk4strmu.ctr"

#include "dk4conf.h"
#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 ((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 (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 ((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 (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 ((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 (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 ((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 ((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;
}



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