arglist.c

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include "arglist.h"

void argListPrint(arglist* arg_list)
{
	int i = 0;
	for(; i < arg_list->size; i++)
	{
		printf("arg %d: %s\n", i, arg_list->args[i]);
	}
}

void argListCreate(arglist* arg_list, size_t capacity)
{
        arg_list->size = 0;
        arg_list->capacity = capacity;
        arg_list->args = malloc(arg_list->capacity * sizeof(char*));

	int i = 0;
	for(; i < arg_list->capacity; i++)
		arg_list->args[i] = NULL;
}

void argListDestroy(arglist* arg_list)
{
        int i = 0;
        for(; i < arg_list->size; i++)
                free(arg_list->args[i]);
        free(arg_list->args);
}

bool argListAdd(arglist* arg_list, const char* arg, size_t index)
{
        if (arg_list->size >= arg_list->capacity-1)
	{
                arg_list->capacity *= 2;
                arg_list->args = realloc(arg_list->args, arg_list->capacity * sizeof(char*));

		int i = arg_list->size;
		for(; i < arg_list->capacity; i++)
			arg_list->args[i] = NULL;
        }

	int i = arg_list->size;
	for(;i > index; i--)
		arg_list->args[i] = arg_list->args[i-1];

        arg_list->args[index] = malloc(strlen(arg) + 1);
        strcpy(arg_list->args[index], arg);
	arg_list->size++;
        return true;
}

bool argListRemove(arglist* arg_list, size_t index)
{
        if (index < 0 || index >= arg_list->size)
                return false;

        free(arg_list->args[index]);

        int i = index;
        for(;i < arg_list->size-1; i++)
                arg_list->args[i] = arg_list->args[i+1];

	arg_list->args[--arg_list->size] = NULL;
        return true;
}