main.c

#include "main.h"

/**
 * run_interactive_mode - runs interactive mode
 * @argc: number of arguments passed to shell
 * @argv: string holding arguments
 * @envp: environment variable
 *
 * Return: nothing
 */
void run_interactive_mode(int argc, char **argv, char **envp)
{
	char *prompt = "$";
	char *input = NULL, *input_cpy = NULL;
	const char *delim = " \n";
	ssize_t nchars_read;
	char **env = envp;
	size_t n = 0;

	while (1)
	{
		_puts(prompt);
		nchars_read = _getline(&input, &n, stdin);
		if (nchars_read == -1)
		{
			exit(1);
		}
		input_cpy = _strdup(input);
		argv = parse_input(input, delim, &argc);

		argc = num_token(input_cpy, delim);
		check_argv(argv, env, input, input_cpy);
		if (_strcmp(argv[0], "env") != 0)
		{
			execute(argv, env);
		}
		free(input_cpy);
		free(input);
		cleanup(argv);
	}
}

/**
 * run_non_interactive_mode - run non-interactive mode
 * @argc: number of arguments passed to shell
 * @argv: string holding arguments
 * @envp: environment variable
 *
 * Return: nothing
 */
void run_non_interactive_mode(int argc, char **argv, char **envp)
{
	char *input = NULL, *input_cpy = NULL;
	const char *delim = " \n";
	ssize_t nchars_read;
	char **env = envp;
	size_t n = 0;

	nchars_read = _getline(&input, &n, stdin);
	while (nchars_read != -1)
	{
		if (*input != '\n')
		{
			input[nchars_read - 1] = '\0';
			input_cpy = allocate(nchars_read);
			_strcpy(input_cpy, input);
			if (has_space(input) == 1)
			{
				free(input_cpy);
				exit(0);
			}
			argv = parse_input(input, delim, &argc);
			argc = num_token(input_cpy, delim);
			check_argv(argv, env, input, input_cpy);
			if (_strcmp(argv[0], "env") != 0)
				execute(argv, env);
			free(input_cpy);
			free(input);
			cleanup(argv);
			nchars_read = _getline(&input, &n, stdin);
		}
		else
			nchars_read = _getline(&input, &n, stdin);
	}
}

/**
 * main - simple shell
 * @argc: number of arguments passed to main function
 * @argv: double pointer to arguments in string format
 * @envp: environment variable
 *
 * Return: 0 (success)
 */
int main(int argc, char **argv, char **envp)
{
	if (isatty(STDIN_FILENO))
	{
		run_interactive_mode(argc, argv, envp);
	}
	else
	{
		run_non_interactive_mode(argc, argv, envp);
	}
	return (0);
}