/*********************************************************************
 appnd.c

  Sample program written by Jose Mari Reyes
  copyright(c)1999 by Jose Mari Reyes
  www.angelfire.com/co2/xtechnica

  This program dynamically appends a string pointer
  by using ANSI malloc and realloc
**********************************************************************/

#define  TEST
#include <stdlib.h>


int slen(char *str)
{
   int len = 0;
   while (str[len]) len++;
   return len;
}



void append_str(char **val, char *src)
{
int    len = 0; 
int    i   = 0;
char   *pt;  

   pt = *val;

   if ((len = slen(pt)) < 1)    
   {
	    pt = malloc (slen(src) * (sizeof(char) * 2));
        
		while (src[i]) 
		{   pt[i] = src[i]; 
		    i++; 
			pt[i] = '\0';
		}
   }
   else
   {
	   len = slen(pt);
	   pt = realloc ( pt, len * ( sizeof(char) + 10));
       
	   while (src[i])
	    {
		   pt[len] = src[i];   
		   i++; len++;
		   pt[len] = '\0';
	   }
   }
 *val = pt;
}



#ifdef TEST
#include <stdio.h>
#include <string.h>

void main()
{
char     *pt;
char     buff[90];

strcpy(buff," I saw her today, I saw here face, it was the face I love\n");
append_str(&pt, buff);

append_str(&pt, "\nAnd I knew I had to run away, and beg down on my knees and pray\n");

strcpy(buff,"\nThat they go away, still they begin, those needles and pins..\n");
append_str(&pt, buff);

strcpy(buff,"\nBecause of all my pride, The tears I got to hide...\n");
append_str(&pt, buff);


strcpy(buff,"\nOh I thought I was smart, I won her hearth, did'nt think I do\n");
append_str(&pt, buff);

strcpy(buff,"\nFor now I see, She's worse to him than me, let her go ahead\n");
append_str(&pt, buff);

strcpy(buff,"\n- The Searchers , cool band 123456789");
append_str(&pt, buff);

strcpy(buff,"\n\n1uenk3400sdkfgQW3ldjjc$@#$WDFgmm34XDG#$F\n\n");
append_str(&pt, buff);

strcpy(buff,"\n- Now let's look and listen for this cool and new");
append_str(&pt, buff);

strcpy(buff,"\n\nHardcore Baby!!! so come on, so baby come on!!!! yeah\n");
append_str(&pt, buff);


printf("\n%s length(%d)",pt, strlen(pt));getchar();

free(pt);

}

#endif