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  1. /*
  2.  * Copyright (C) 2005 Martin Decky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #include <libc.h>
  30. #include <unistd.h>
  31. #include <stdio.h>
  32. #include <io/io.h>
  33.  
  34. static char nl = '\n';
  35.  
  36. int puts(const char * str)
  37. {
  38.     size_t count;
  39.    
  40.     if (str == NULL) {
  41.         return putnchars("(NULL)",6 );
  42.     }
  43.    
  44.     for (count = 0; str[count] != 0; count++);
  45.     if (write(1, (void * ) str, count) == count) {
  46.         if (write(1, &nl, 1) == 1)
  47.             return 0;
  48.     }
  49.    
  50.     return EOF;
  51. }
  52.  
  53. /** Put count chars from buffer to stdout without adding newline
  54.  * @param buf Buffer with size at least count bytes - NULL pointer NOT allowed!
  55.  * @param count
  56.  * @return 0 on succes, EOF on fail
  57.  */
  58. int putnchars(const char * buf, size_t count)
  59. {
  60.     if (write(1, (void * ) buf, count) == count) {
  61.             return 0;
  62.     }
  63.    
  64.     return EOF;
  65. }
  66.  
  67. /** Same as puts, but does not print newline at end
  68.  *
  69.  */
  70. int putstr(const char * str)
  71. {
  72.     size_t count;
  73.    
  74.     if (str == NULL) {
  75.         return putnchars("(NULL)",6 );
  76.     }
  77.  
  78.     for (count = 0; str[count] != 0; count++);
  79.     if (write(1, (void * ) str, count) == count) {
  80.             return 0;
  81.     }
  82.    
  83.     return EOF;
  84. }
  85.  
  86. int putchar(int c)
  87. {
  88.     unsigned char ch = c;
  89.     if (write(1, (void *)&ch , 1) == 1) {
  90.             return c;
  91.     }
  92.    
  93.     return EOF;
  94. }
  95.  
  96. int getchar(void)
  97. {
  98.     unsigned char c;
  99.     if (read(0, (void *)&c , 1) == 1) {
  100.             return c;
  101.     }
  102.    
  103.     return EOF;
  104. }
  105.  
  106.  
  107.