check_path.c

#include "holberton.h"

/**
 * check_path - Check if the file is in the path.
 *
 * @ar: Entered commands.
 *
 * Return: If it finds the file in the path, returns the full path.
 *         Else, returns the same command entered.
 */

char *check_path(char **ar)
{
	char *value = NULL, *path = NULL;
	char *env = NULL, *name = NULL, *ex = NULL;
	size_t size_name, size;
	struct stat st;

	env = get_env();

	if (env != NULL)
	{
		name = ar[0];

		size_name = _strlen(name);
		ex = malloc(sizeof(char) * _strlen(env) + 1);
		ex = _strcpy(ex, env);
		path = strtok(ex, ":");

		while (path != NULL)
		{
			size = _strlen(path) + size_name + 2;
			value = malloc(sizeof(char) * size);

			value = _strcpy(value, path);
			value = _strcat(value, "/");
			value = _strcat(value, name);

			if (stat(value, &st) == 0 && st.st_mode & X_OK)
			{
				free(ex);
				return (value);
			}

			path = strtok(NULL, ":");
			free(value);
		}
		free(ex);
	}
	return (name);
}