builders.c

#include "holberton.h"
/**
 *build_argv - Build argv to send myexec
 *@lineptr: Line with value stored the information
 *Return: Array to pointers with Arguments
*/
char **build_argv(char *lineptr)
{
	char **argv = NULL;
	char len = 1;

	lineptr = strtok(lineptr, " \t\n");
	while (lineptr != NULL)
	{
		argv = realloc_pointer(argv, len - 1, len);
		argv[len - 1] = lineptr;
		lineptr = strtok(NULL, " \t\n");
		len++;
	}
	argv = realloc_pointer(argv, len - 1, len);
	if (argv == NULL)
		return (NULL);
	argv[len - 1] = NULL;
	return (argv);
}
/**
 *build_path - fin path to execute
 *@c: quantity of commands executed
 *@full_path: comand to execute
 *@argv_0: the arguments
 *@envp: the enviroment
 *Return: Pointer with the value of full path
*/
int build_path(int c, char **full_path, char *argv_0, char *envp[])
{
	char *token = NULL, *s = ":", *path = NULL, *aux;
	struct stat st;

	if (argv_0[0] == '/' || argv_0[0] == '.')
	{
		if (stat(argv_0, &st) == 0)
		{	*full_path = str_concat("", argv_0);
			return (0);
		}
		else
		{	*full_path = str_concat("", "");
			not_found_command(c, argv_0);
			exit(127);	}
	}
	else
	{	aux = str_concat(get_value_env(envp, "PATH"), "");
		aux = strtok(aux, " ");
		if (aux == NULL)
		{	not_found_path(c, argv_0);
			exit(127);
		}
		else
		{	token = strtok(aux, s);
		while (token != NULL)
		{	path = str_concat(token, "/");
			*full_path = str_concat(path, argv_0);
			free(path);
			if (*full_path == NULL)
			{	free(aux);
				return (-1);	}
			if (stat(*full_path, &st) == 0)
			{	free(aux);
				return (1);	}
			free(*full_path);
			token = strtok(NULL, s);	}
		free(aux);
		*full_path = str_concat("", "");
		not_found_command(c, argv_0);	}
		exit(127);	}
}
/**
 * getfunction- selects the correct function to perform the operation
 * @built: Operator given
 * Return: a pointer to the function that corresponds to the operator given
 */
void (*getfunction(char *built))(char **, char **, char *, int)
{
	int i_struct = 0;
	op_t print[] = {
		{"exit", exit_handler},
		{"env", env_handler},
		{"help", help_handler},
		{NULL, NULL}
	};

	while (print[i_struct].op != NULL)
	{
		if (_str_cmp(built, print[i_struct].op))
		{
			return (print[i_struct].f);
		}
		i_struct++;
	}
	return (NULL);
}