Thread: Autocomplete feature prototype

Say you are in chat room and in it there are 3 users.
paul127, mary532, mark456
You type pau and press tab to automatically complete paul's user name. The following code prototypes that feature.

Code:

/*
autocomplete.c
version 0.1
You know in irc chat room you want to type a user's name quickly, you type a portion of his user name and press tab? This code prototypes that functionality.
*/

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

const char* search1="";
const char* search2="app";
const char* search3="apple tree";

char* strings1[3]={"","",""};
char* strings2[3]={"app","apple treehouse","apple treehouse"};

char* match(const char* search, char** strings, int n) {
   if (n==0) {
      return "";
   }
   if (n==1) {
      if (!strcmp(search, "")) {
         return strings[0];
      }
      else {
         if (!strncmp(strings[0], search, strlen(search))) {
            return strings[0];
         }
         else return "";
      }
   }
   
  
   if (n>1) {
      int i=1;
      int j=n-1;
      int k=1;
      char result[20]="";
      if (!strcmp(search, "")) {
         while (j-- && strings[i]) {
            if (!strncmp(strings[0], strings[i], k)) continue;
            else return "";
            ++i;
         }
         strncpy(result, strings[0], 1);
         result[1]='\0';
         char* r=(char*)malloc(20*sizeof(char));
         strcpy(r, result);
         k++;
         i=1;
         j=n-1;
         while (k<=strlen(strings[0])) {
            while (j-- && strings[i]) {
               if (!strncmp(strings[0], strings[i], k)) continue;
               else return r;
               ++i;
           }
           i=1; j=n-1;
           strncpy(result, strings[0], k);
           result[k++]='\0';
           strcpy(r, result);
         }
         return r;
      }
      if (strlen(search)>=1) {
         int dd[n]; dd[0]=0;
         i=0; j=n; k=strlen(search); int l=0; 
         while (strings[i] && j--) {
            if (!strncmp(strings[i], search, k)) {
               dd[l++]=i+1;
            }
            ++i;
         } 
         char* s=(char*)malloc(20*sizeof(char));
         i=1; j=l-1; k=strlen(search)+1; 
         if (dd[0]>0) { 
            strcpy(s, search);
            while (k<=strlen(strings[dd[0]-1])) {
               while (j--) {
                  if (!strncmp(strings[dd[0]-1], strings[dd[i++]-1], k)) continue;
                  else return s;
               } 
               j=l-1; i=1; 
               strncpy(result, strings[dd[0]-1], k);
               result[k++]='\0';
               strcpy(s, result);
            }
            return s;
         }
         else return "";
      }
   } 
}

int main() {
   puts(match(search1, strings2, 3)); // app
   puts(match(search2, strings2, 3)); // app
   puts(match(search3, strings2, 3)); // apple treehouse
   return 0;
}

No..wait...no it doesn't. If you want something like this, check into <termios.h>, which lets you do many things to the basic i/o terminal and streams, including non-canon mode that doesn't require a return (so a '\t' will be read in as soon as it's pressed).

Originally Posted by memcpy

No..wait...no it doesn't. If you want something like this, check into <termios.h>, which lets you do many things to the basic i/o terminal and streams, including non-canon mode that doesn't require a return (so a '\t' will be read in as soon as it's pressed).

Ok i'll look into it

I did coding on galaxy tab. woot

Its a nice challenge for me. I'm going to modify it and will tell you. Did you ever make a programme that accept a user name. If user is new it make a file regarding the name of user. After creating a user file, its ask for to set a password. If you say yes, then you will be able to set a password for user and a confirm password again asked by program. And when the confirm happens right then programs ask for login again with user and password to check whether user is authorised or not? I think it will easy for you!