参考

{% collapse title=”prompt_unix.c” %}

  1. #include <stdio.h>
  2. #include <stdlib.h>
  4. #include <editline/readline.h>
  5. #include <editline/history.h>
  7. int main(int argc, char** argv) {
  9.   /* Print Version and Exit Information */
  10.   puts("Lispy Version 0.0.0.0.1");
  11.   puts("Press Ctrl+c to Exit\n");
  13.   /* In a never ending loop */
  14.   while (1) {
  16.     /* Output our prompt and get input */
  17.     char* input = readline("lispy> ");
  19.     /* Add input to history */
  20.     add_history(input);
  22.     /* Echo input back to user */    
  23.     printf("No you're a %s\n", input);
  25.     /* Free retrived input */
  26.     free(input);
  28.   }
  30.   return 0;
  31. }

{% endcollapse %}

{% collapse title=”prompt_windows.c” %}

  1. #include <stdio.h>
  3. /* Declare a buffer for user input of size 2048 */
  4. static char input[2048];
  6. int main(int argc, char** argv) {
  8.   /* Print Version and Exit Information */
  9.   puts("Lispy Version 0.0.0.0.1");
  10.   puts("Press Ctrl+c to Exit\n");
  12.   /* In a never ending loop */
  13.   while (1) {
  15.     /* Output our prompt */
  16.     fputs("lispy> ", stdout);
  18.     /* Read a line of user input of maximum size 2048 */
  19.     fgets(input, 2048, stdin);
  21.     /* Echo input back to user */
  22.     printf("No you're a %s", input);
  23.   }
  25.   return 0;
  26. }

{% endcollapse %}

{% collapse title=”prompt.c” %}

  1. #include <stdio.h>
  2. #include <stdlib.h>
  4. /* If we are compiling on Windows compile these functions */
  5. #ifdef _WIN32
  6. #include <string.h>
  8. static char buffer[2048];
  10. /* Fake readline function */
  11. char* readline(char* prompt) {
  12.   fputs(prompt, stdout);
  13.   fgets(buffer, 2048, stdin);
  14.   char* cpy = malloc(strlen(buffer)+1);
  15.   strcpy(cpy, buffer);
  16.   cpy[strlen(cpy)-1] = '\0';
  17.   return cpy;
  18. }
  20. /* Fake add_history function */
  21. void add_history(char* unused) {}
  23. /* Otherwise include the editline headers */
  24. #else
  25. #include <editline/readline.h>
  26. #include <editline/history.h>
  27. #endif
  29. int main(int argc, char** argv) {
  31.   puts("Lispy Version 0.0.0.0.1");
  32.   puts("Press Ctrl+c to Exit\n");
  34.   while (1) {
  36.     /* Now in either case readline will be correctly defined */
  37.     char* input = readline("lispy> ");
  38.     add_history(input);
  40.     printf("No you're a %s\n", input);
  41.     free(input);
  43.   }
  45.   return 0;
  46. }

{% endcollapse %}