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  1. /*
  2.  * Copyright (c) 2008 Jiri Svoboda
  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 cli cli
  30.  * @brief   Trivial command-line interface for running programs.
  31.  * @{
  32.  */
  33. /**
  34.  * @file
  35.  */
  36.  
  37. #include <stdio.h>
  38. #include <stdlib.h>
  39. #include <task.h>
  40.  
  41. #define LINE_BUFFER_SIZE 128
  42. static char line_buffer[LINE_BUFFER_SIZE];
  43.  
  44. void read_line(char *buffer, int n)
  45. {
  46.     char c;
  47.     int chars;
  48.  
  49.     printf("> ");
  50.  
  51.     chars = 0;
  52.     while (chars < n - 1) {
  53.         c = getchar();
  54.         if (c == '\n') break;
  55.         if (c == '\b') {
  56.             if (chars > 0) {
  57.                 putchar('\b');
  58.                 --chars;
  59.             }
  60.             continue;
  61.         }
  62.        
  63.         putchar(c);
  64.         buffer[chars++] = c;
  65.     }
  66.  
  67.     putchar('\n');
  68.     buffer[chars] = '\0';
  69. }
  70.  
  71.  
  72. int main(int argc, char *argv[])
  73. {
  74.     printf("This is CLI\n");
  75.  
  76.     while (1) {
  77.         read_line(line_buffer, LINE_BUFFER_SIZE);
  78.         printf("'%s'\n", line_buffer);
  79.         if (strcmp(line_buffer, "exit") == 0)
  80.             break;
  81.         printf("spawn task\n");
  82.         if (line_buffer[0] != '\0')
  83.             task_spawn(line_buffer, NULL);
  84.     }
  85.  
  86.     printf("Bye\n");
  87.    
  88.     return 0;
  89. }
  90.  
  91. /** @}
  92.  */
  93.  
  94.