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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.  /** @addtogroup libc
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <libc.h>
  36. #include <unistd.h>
  37. #include <stdio.h>
  38. #include <io/io.h>
  39.  
  40. static char nl = '\n';
  41.  
  42. int puts(const char * str)
  43. {
  44.     size_t count;
  45.    
  46.     if (str == NULL) {
  47.         return putnchars("(NULL)",6 );
  48.     }
  49.    
  50.     for (count = 0; str[count] != 0; count++);
  51.     if (write(1, (void * ) str, count) == count) {
  52.         if (write(1, &nl, 1) == 1)
  53.             return 0;
  54.     }
  55.    
  56.     return EOF;
  57. }
  58.  
  59. /** Put count chars from buffer to stdout without adding newline
  60.  * @param buf Buffer with size at least count bytes - NULL pointer NOT allowed!
  61.  * @param count
  62.  * @return 0 on succes, EOF on fail
  63.  */
  64. int putnchars(const char * buf, size_t count)
  65. {
  66.     if (write(1, (void * ) buf, count) == count) {
  67.             return 0;
  68.     }
  69.    
  70.     return EOF;
  71. }
  72.  
  73. /** Same as puts, but does not print newline at end
  74.  *
  75.  */
  76. int putstr(const char * str)
  77. {
  78.     size_t count;
  79.    
  80.     if (str == NULL) {
  81.         return putnchars("(NULL)",6 );
  82.     }
  83.  
  84.     for (count = 0; str[count] != 0; count++);
  85.     if (write(1, (void * ) str, count) == count) {
  86.             return 0;
  87.     }
  88.    
  89.     return EOF;
  90. }
  91.  
  92. int putchar(int c)
  93. {
  94.     unsigned char ch = c;
  95.     if (write(1, (void *)&ch , 1) == 1) {
  96.             return c;
  97.     }
  98.    
  99.     return EOF;
  100. }
  101.  
  102. int getchar(void)
  103. {
  104.     unsigned char c;
  105.     if (read(0, (void *)&c , 1) == 1) {
  106.             return c;
  107.     }
  108.    
  109.     return EOF;
  110. }
  111.  
  112.  
  113.  
  114.  
  115.  /** @}
  116.  */
  117.  
  118.  
  119.