#include <rpc/rpc.h>
#include "countchar.h"	/* Generated by countchar.x */

/*	CpSc 824

	Desc: rpc server for countchar.  This routine is passed a character
		  string and a character via a pointer parameter to the enclosing
		  structure -- and this routine counts and returns the number of
		  occurrences of the character in the string.

*/

int *countchar_1(parm) 
stringdata *parm;	/* Defined in countchar.x */
{
	
	static int count;
	char *p;

	/* Start at the begining of the string and scan through counting 
		occurences */
	count = 0;
	p = parm -> buf;
	while (*p)
		if (*p++ == parm-> findch)
			count++;

	/* Return count */
	return(&count);

}

/* CpSc 824

	Desc:  rpc server countallchars. Scan the input parameter string
           and construct a linked list of each character found in the
           string and an occurence count.  Return the linked list.
*/

nextcount *countallchars_1(bufptr)
buftype *bufptr;
{
	static nextcount start; /* Must be static since a pointer is return
							   to it */
	nextcount cur, last;
	char *ch;

	/* Free previous result - otherwise we will have a memory leak */
	xdr_free(xdr_nextcount,&start);

	ch = *bufptr;

	/* Allocate first node */
	start = malloc(sizeof(struct countdata));
	start->character = *ch;
	start->count = 1;
	start->next = NULL;

	/* Now process rest of string */
	ch++;
	while (*ch) {
		/* Search for previous occurence */
		cur = start;
		while (cur) {
			if (cur->character == *ch) {
				cur->count++;
				break;
			}
			last = cur;
			cur = last->next;
		}
		/* If not found, allocate a new node */
		if (cur == NULL) {
			last->next = cur = malloc(sizeof(struct countdata));
			cur -> character = *ch;
			cur ->count=1;
			cur -> next = NULL;
		}
		ch++;
	}

	/* Return list */
	return(&start);
}