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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. #define MAX_ARGS 16
  45. static char *argv_buf[MAX_ARGS + 1];
  46.  
  47. static void read_line(char *buffer, int n)
  48. {
  49.     char c;
  50.     int chars;
  51.  
  52.     printf("> ");
  53.  
  54.     chars = 0;
  55.     while (chars < n - 1) {
  56.         c = getchar();
  57.         if (c < 0) exit(0);
  58.         if (c == '\n') break;
  59.         if (c == '\b') {
  60.             if (chars > 0) {
  61.                 putchar('\b');
  62.                 --chars;
  63.             }
  64.             continue;
  65.         }
  66.        
  67.         putchar(c);
  68.         buffer[chars++] = c;
  69.     }
  70.  
  71.     putchar('\n');
  72.     buffer[chars] = '\0';
  73. }
  74.  
  75. static void program_run(void)
  76. {
  77.     char *p;
  78.     int n;
  79.  
  80.     p = line_buffer;
  81.     n = 0;
  82.  
  83.     while (n < MAX_ARGS) {
  84.         argv_buf[n++] = p;
  85.         p = strchr(p, ' ');
  86.         if (p == NULL) break;
  87.  
  88.         *p++ = '\0';
  89.     }
  90.     argv_buf[n] = NULL;
  91.  
  92.     printf("spawn task '%s' with %d args\n", argv_buf[0], n);
  93.     printf("args:");
  94.     int i;
  95.     for (i = 0; i < n; ++i) {
  96.         printf(" '%s'", argv_buf[i]);
  97.     }
  98.     printf("\n");
  99.  
  100.     task_spawn(argv_buf[0], argv_buf);
  101. }
  102.  
  103.  
  104. int main(int argc, char *argv[])
  105. {
  106.     printf("This is CLI\n");
  107.  
  108.     while (1) {
  109.         read_line(line_buffer, LINE_BUFFER_SIZE);
  110.         printf("'%s'\n", line_buffer);
  111.         if (strcmp(line_buffer, "exit") == 0)
  112.             break;
  113.        
  114.         if (line_buffer[0] != '\0')
  115.         program_run();
  116.     }
  117.  
  118.     printf("Bye\n");
  119.    
  120.     return 0;
  121. }
  122.  
  123. /** @}
  124.  */
  125.  
  126.