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#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "entry.h"
#include "group.h"
#define BUF_LEN 1024
typedef struct group{
char name[BUF_LEN];
char program[BUF_LEN];
struct entry *head;
struct entry *tail;
struct group *next;
int entry_count;
} GROUP;
GROUP *create_group(char *new_name);
void group_add(char *gname, ENTRY *addme);
GROUP **get_groups();
char *get_gname(GROUP *g);
char *get_gprog(GROUP *g);
void set_gprog(GROUP *g, char *p);
ENTRY *get_ghead(GROUP *g);
int get_ecount(GROUP *g);
int get_gcount();
void group_debug(); //debug function to output all groups
GROUP *groups_head;
GROUP *gp; //pointer to remember last group that was looked at
int group_count = 0;
int total_count = 0;
GROUP *create_group(char *new_name){
GROUP *new = malloc(sizeof(GROUP));
strcpy(new->name, new_name); //by default, group name is equivalent to the path
strcpy(new->program, "./"); //by default, launch an entry by executing it
new->head = NULL;
new->tail = NULL;
new->next = NULL;
new->entry_count = 0;
group_count++;
return new;
}
//add an entry to a group or add a new empty group
//FIXME maybe make this function part of a seperate file to handle a tree (AVL?)
//for now, simple linked list implementation
void group_add(char *gname, ENTRY *addme){
int i;
GROUP *new;
GROUP *last = NULL; //last element in an existing group list (NULL to start)
//only adding a new group
if(addme == NULL){
gp = groups_head;
while(gp != NULL){
if(!(strcmp(gp->name, gname))){
printf("config error: %s is already a group!\n", gname);
return;
}
last = gp;
gp = gp->next;
}
}
//The previous group is not the same as the new group to add to
if(!(gp != NULL && (!(strcmp(gp->name, gname))))){
gp = groups_head;
while(gp != NULL){
//gname matches groups[i]'s name, add entry here
if(!(strcmp(gp->name, gname))) break;
last = gp;
gp = gp->next;
}
}
//was unable to find a matching existing group
//need to create new group to insert the entry into
if(gp == NULL){
new = create_group(gname);
//first group
if(last == NULL) groups_head = new;
//add to the end of the groups
else last->next = new;
gp = new;
}
//add the entry to the list of entries in the group
if(addme != NULL){
gp->tail = entry_add_last(gp->tail, addme);
if(gp->head == NULL) gp->head = gp->tail; //first element of the new list
gp->entry_count++;
total_count++;
}
return;
}
GROUP **get_groups(){
GROUP **arr = malloc(sizeof(GROUP *) * group_count);
GROUP *trav = groups_head;
int i;
for(i = 0; i < group_count; i++){
arr[i] = trav;
trav = trav->next;
}
return arr;
}
char *get_gname(GROUP *g){
assert(g != NULL);
return g->name;
}
char *get_gprog(GROUP *g){
assert(g != NULL);
return g->program;
}
void set_gprog(GROUP *g, char *p){
assert(g != NULL);
strcpy(g->program, p);
}
ENTRY *get_ghead(GROUP *g){
assert(g != NULL);
return g->head;
}
int get_ecount(GROUP *g){
assert(g != NULL);
return g->entry_count;
}
int get_gcount(){
return group_count;
}
void group_debug(){
GROUP *trav = groups_head;
while(trav != NULL){
entry_debug(trav->head);
printf("\tfrom group %s\n", trav->name);
trav = trav->next;
}
return;
}
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