board/MAI/bios_emulator/scitech/src/v86bios/command.c

   1 #include <stdio.h>
   2 #include <readline/readline.h>
   3 #include <readline/history.h>
   4 #include <malloc.h>
   5
   6 #define PROMPT ">"
   7
   8
   9 void
  10 getline(char *buf,int *num,int max_num)
  11 {
  12     static int line_len = 0;
  13     static char *line = NULL;
  14     static char *line_pointer = NULL;
  15     static int len = 0;
  16     int tmp_len;
  17     char *buff;
  18
  19     if (len <= 0) {
  20     buff = readline(PROMPT);
  21     add_history(buff);
  22
  23     if ((tmp_len = strlen(buff)) > line_len) {
  24         free(line);
  25         line = malloc(tmp_len);
  26         line_len = tmp_len;
  27     }
  28     sprintf(line,"%s\n",buff);
  29     free(buff);
  30     line_pointer = line;
  31     len = strlen(line);
  32     }
  33
  34     *num = max_num > len? len : max_num;
  35     strncpy(buf,line_pointer,*num);
  36     line_pointer = line_pointer + *num;
  37     len = len - *num;
  38 }