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path: root/support/dktools/dk4strmo16.c
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/*
Copyright (C) 2015-2020, 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: dk4strmo16.ctr
*/

/**	@file dk4strmo16.c The dk4strmo16 module.
*/


#line 74 "dk4strmo16.ctr"

#include "dk4conf.h"
#include "dk4strmo16.h"
#include "dk4strmo32.h"
#include "dk4enc.h"
#include "dk4utf16.h"

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



int
dk4stream_c16_puts(dk4_stream_t *strm, const dk4_c16_t *txt, dk4_er_t *erp)
{
  dk4_utf16_decoder_t	enc;
  dk4_c16_t		c16;
  dk4_c32_t		c32;
  int		 	back	=	0;
  char			c8;
#if	DK4_USE_ASSERT
  assert(NULL != strm);
  assert(NULL != txt);
#endif
  if ((NULL != strm) && (NULL != txt)) {
    if (0 != ((strm->fl) & DK4_STREAM_WRITE)) {
      switch (strm->oenc) {
        case DK4_FILE_ENCODING_UTF16_LE:
	case DK4_FILE_ENCODING_UTF16_BE:
	{
	  back = 1;
	  while((0 != *txt) && (1 == back)) {
	    c16 = *(txt++);
	    if (DK4_FILE_ENCODING_UTF16_LE == strm->oenc) {
	      c8 = (char)(c16 & 0x00FF);
	      if (0 == dk4stream_write_byte(strm, c8, erp)) {
	        back = 0;
	      } else {
	        c8 = (char)((c16 >> 8) & 0x00FF);
		if (0 == dk4stream_write_byte(strm, c8, erp)) {
		  back = 0;
		}
	      }
	    } else {
	      c8 = (char)((c16 >> 8) & 0x00FF);
	      if (0 == dk4stream_write_byte(strm, c8, erp)) {
	        back = 0;
	      } else {
	        c8 = (char)(c16 & 0x00FF);
		if (0 == dk4stream_write_byte(strm, c8, erp)) {
		  back = 0;
		}
	      }
	    }
	  }
	} break;
	default: {
	  back = 1;
	  dk4utf16_init(&enc);
	  while((0 != *txt) && (1 == back)) {
	    switch (dk4utf16_add(&enc, *(txt++))) {
	      case DK4_EDSTM_FINISHED: {
	        c32 = dk4utf16_get(&enc);
		dk4utf16_init(&enc);
		if (0 == dk4stream_c32_putc(strm, c32, erp)) {
		  back = 0;
		}
	      } break;
	      case DK4_EDSTM_ERROR: {
	        back = 0;
		dk4error_set_simple_error_code(erp,DK4_E_DECODING_FAILED);
	      } break;
	    }
	  }
	  if (0 == dk4utf16_is_empty(&enc)) {
	    back = 0;
	    dk4error_set_simple_error_code(erp,DK4_E_DECODING_FAILED);
	  }
	} break;
      }
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}