list.c

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <libelf/libelf.h>
#include <libelf/gelf.h>
#include "ld.h"
void init(Node **add_list){
        *add_list = NULL;
}
Node *ispresent(Node *list,char *string){
        Node *p;
        p = list;
        while(p ){
                if(!strcmp(p->name,string))
                        return p;
                p = p->next;
        }
        return NULL;
}
void traverse(Node *list){
        Node *p;
        p = list;
        while(p){
                printf("%s  %d %d\n",p->name,(int)p->symbol->st_value,p->argindex);
                p = p->next;
        }
}
int delete(Node **list,char *string){
        Node *p,*q;
        p = *list;
        q = p->next;
        if(!p){
                /*empty list*/

                printf("empty delete\n");
                return -1;
        }
        if(!strcmp(p->name,string)){

                /*if element is at first position */

                *list = q;
                free(p);
                return 0;
        }
        while(q){
                if(!strcmp(q->name,string)){
                        p->next = q->next;
                        free(q);
                        return 0;
                }
                p = q;
                q = q->next;
        }
        return -1;
}
void insert(Node **list,GElf_Sym *symbol,char *string,int argindex){
        Node *p,*tmp;
        p = (Node *)malloc(sizeof(Node));

        strcpy(p->name,string);
        p->argindex = argindex;
        p->symbol = symbol; 
        p->next = NULL;

        if(symbol == NULL){
                printf("couldnot insert\n");
                return ;
        }

        if(!(*list)){
                /*void inesrtion*/
                *list = p;
        }else{
                /*normal operation*/
                tmp = *list;
                while(tmp->next != NULL){
                        tmp = tmp->next;
                }
                tmp->next = p;
        }
}
/*
void f(Node **list){
        GElf_Sym *symbol = (GElf_Sym *)malloc(sizeof(GElf_Sym) * 1);

        char str[16] = "dhanesh";
        insert(list,symbol,str);
        char str1[16] = "arole";
        insert(list,symbol,str1);
        char str2[16] = "calcutta";
        insert(list,symbol,str2);
        char str3[16] = "finance";
        insert(list,symbol,str3);

}*/
/*
void f1(Node **list,Node **list1){
        Node *u = NULL;
        while(u = getnextNode(*list,u)){
                printf("%s \n",u->name,(int)(u->symbol)->st_size);
                insert(list1,u->symbol,u->name);
                delete(list,u->name);
        }
}
int main(){

        Node *list;
        Node *list1;
        init(&list);
        init(&list1);
        f(&list);
        f1(&list,&list1);
        traverse(list1);
}*/