history.c

Linux下的MUD客户端程序

/* Autoconf patching by David Hedbor, [e-mail] */
/*********************************************************************/
/* file: history.c - functions for the history stuff                 */
/*                             TINTIN III                            */
/*          (T)he K(I)cki(N) (T)ickin D(I)kumud Clie(N)t             */
/*                     coded by peter unold 1992                     */
/*********************************************************************/
#include <ctype.h>
#ifdef HAVE_STRING_H
#include <string.h>
#else
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#endif
#include "tintin.h"


#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif

void insert_history();

extern char *space_out();
extern char *mystrdup();
extern struct session *parse_input();

/************************/
/* the #history command */
/************************/
void history_command(ses)
     struct session *ses;
{
  if(ses) {
    int i;
    char temp[240];
    for(i=HISTORY_SIZE-1; i>=0; i--)
      if(ses->history[i]) {
        sprintf(temp, "%2d %s ", i, ses->history[i]);
        tintin_puts2(temp, ses);
      }
  }
  else
    tintin_puts("#NO SESSION ACTIVE => NO HISTORY DUMMY!", ses);
  prompt(NULL);
}



void do_history(buffer, ses)
     char *buffer;
     struct session *ses;
{
  char result[BUFFER_SIZE], *cptr;  

  cptr=space_out(buffer);

  if(*cptr) {

    if(*cptr=='!') {
      if(*(cptr+1)=='!') {
        if(ses->history[0]) {
          strcpy(result, ses->history[0]);
          strcat(result, cptr+2);
          strcpy(buffer, result);
	}
      }

      else if(isdigit(*(cptr+1))) {
        int i=atoi(cptr+1);
        if(i>=0 && i<HISTORY_SIZE && ses->history[i]) {
          strcpy(result, ses->history[i]);
          strcat(result, cptr+2);
          strcpy(buffer, result);
	}
      }
      else {
        int i;

        for(i=0; i<HISTORY_SIZE && ses->history[i]; i++)
          if(is_abrev(cptr+1, ses->history[i])) {
            strcpy(buffer, ses->history[i]);
	    break;
	  }
      }
    
    }
  }
  insert_history(buffer, ses);
}

/***********************************************/
/* insert buffer into a session`s history list */
/***********************************************/
void insert_history(buffer, ses)
     char *buffer;
     struct session *ses;
{
  int i;

  /* CHANGED to fix an annoying memory leak, these were never getting freed */
  if (ses->history[HISTORY_SIZE-1])
    free(ses->history[HISTORY_SIZE-1]);

  for(i=HISTORY_SIZE-1; i>0; i--)
    ses->history[i]=ses->history[i-1];

   ses->history[0]=mystrdup(buffer);
}

/************************************************************/
/* do all the parse stuff for !XXXX history commands        */
/* i'm a nihilist alright(hell i felt like writing that..)  */
/************************************************************/
struct session *parse_history_command(command, arg, ses)
     char *command;
     char *arg;
     struct session *ses;
{
  if(ses) {

    if((*(command+1)=='!' || !*(command+1)) && ses->history[0]) 
        return parse_input(ses->history[0], ses);

    else if(isdigit(*(command+1))) {
      int i=atoi(command+1);

      if(i>=0 && i<HISTORY_SIZE && ses->history[i]) {
        return parse_input(ses->history[i], ses);
      }
    }
   
    else {

    }

  }
  tintin_puts("#I DON'T REMEMBER THAT COMMAND.", ses);

  return ses;
}