129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* main.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <jhalford@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2016/12/06 18:40:58 by jhalford #+# #+# */
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/* Updated: 2017/03/08 15:48:41 by ariard ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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int handle_instruction(int fd)
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{
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t_list *token;
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t_list *ltoken;
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t_lexer lexer;
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t_parser parser;
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t_btree *ast;
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char *str;
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int ret;
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lexer_init(&lexer);
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parser_init(&parser);
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token = NULL;
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ast = NULL;
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while (1)
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{
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if ((ret = readline(fd, get_lexer_stack(lexer) ||
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parser.state == UNDEFINED, &str)))
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{
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if (ret == -1)
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return (-1);
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return (parser.state == UNDEFINED ? error_EOF(&token,
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&parser, &ast) : 1);
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}
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ft_strappend(&lexer.str, str);
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if (get_lexer_stack(lexer) == BACKSLASH)
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pop(&lexer.stack);
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else if (get_lexer_stack(lexer) == DLESS)
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lexer.state = DLESS;
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ltoken = ft_lstlast(token);
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if (lexer_lex(token ? <oken : &token, &lexer))
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return (1);
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if (get_lexer_stack(lexer) > 2)
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continue ;
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lexer.state = DEFAULT;
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if (get_reserved_words(&token))
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return (1);
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token_print(token);
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if (insert_newline(&token))
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return (1);
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DG("exit newline");
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if (ft_parse(&ast, &token, &parser))
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continue ;
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if (parser.state == SUCCESS)
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break ;
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else if (parser.state == ERROR && SH_IS_INTERACTIVE(data_singleton()->opts))
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{
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ft_add_str_in_history(lexer.str);
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return (error_syntax(&token, &parser, &ast));
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}
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else if (parser.state == ERROR)
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error_syntax(&token, &parser, &ast);
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}
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DG("Before execution:");
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// btree_print(STDBUG, ast, &ft_putast);
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if (ft_exec(&ast))
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return (1);
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instruction_free(&token, &parser, &ast);
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ft_add_str_in_history(lexer.str);
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return (0);
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}
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int get_input_fd()
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{
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t_data *data;
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char *file;
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int fds[2];
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int fd;
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data = data_singleton();
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fd = STDIN;
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if (SH_IS_INTERACTIVE(data->opts))
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return (fd);
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else if (data->opts & SH_OPTS_LC)
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{
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pipe(fds);
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fd = fds[PIPE_READ];
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file = shell_get_avdata();
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write(fds[PIPE_WRITE], file, ft_strlen(file));
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close(fds[PIPE_WRITE]);
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fcntl(fd, F_SETFD, FD_CLOEXEC);
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return (fd);
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}
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else if ((file = shell_get_avdata()))
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{
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if ((fd = open(file, O_RDONLY | O_CLOEXEC)) < 0)
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return (-1);
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return (fd);
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}
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else
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return (STDIN);
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}
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int main(int ac, char **av)
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{
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int fd;
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setlocale(LC_ALL, "");
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shell_init(ac, av);
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if ((fd = get_input_fd()) < 0)
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{
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ft_printf("{red}%s: %s: No such file or directory\n{eoc}", SHELL_NAME, shell_get_avdata());
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return (1);
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}
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DG("{inv}{bol}{gre}start of shell{eoc} JOBC is %s, fd=[%i]",
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SH_HAS_JOBC(data_singleton()->opts)?"ON":"OFF", fd);
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while (handle_instruction(fd) == 0)
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{
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// lexer_clean;
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// parser_clean;
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;
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}
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shell_exit();
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return (0);
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}
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