134 lines
3.7 KiB
C
134 lines
3.7 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: 2017/03/15 16:33:07 by gwojda ### ########.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 || lexer.state == HEREDOC, &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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if (lexer.state == HEREDOC)
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{
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ft_strappend(&lexer.str, (char[]){'\n', 0});
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lexer.pos++;
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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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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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if (ft_parse(&ast, &token, &parser))
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continue ;
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if (parser.state == ERROR)
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error_syntax(&token, &parser, &ast);
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lexer.state = data_singleton()->heredoc_queue ? HEREDOC : 0;
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if (lexer.state)
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continue;
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else 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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}
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btree_print(STDBUG, ast, &ft_putast);
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if (ft_exec(&ast))
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return (2);
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instruction_free(&token, &parser, &ast);
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if (SH_IS_INTERACTIVE(data_singleton()->opts) && *lexer.str)
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ft_add_str_in_history(lexer.str);
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ft_strdel(&lexer.str);
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return (0);
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}
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int get_input_fd(char **av)
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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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struct stat buf;
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data = data_singleton();
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if (SH_IS_INTERACTIVE(data->opts))
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return (STDIN);
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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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dup2_close(fds[PIPE_READ], 10);
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fd = 10;
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file = *cliopts_getdata(av);
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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 = *cliopts_getdata(av)) && !stat(file, &buf))
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{
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fd = -1;
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if (S_ISDIR(buf.st_mode))
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ft_printf("{red}%s: %s: is a directory\n{eoc}", av[0], file);
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else if ((fd = open(file, O_RDONLY | O_CLOEXEC)) < 0)
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ft_printf("{red}%s: %s: No such file or directory\n{eoc}", av[0], file);
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if (fd > 0 && !dup2_close(fd, 10) && (fd = 10))
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return (fd);
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}
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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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g_argv = av;
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setlocale(LC_ALL, "");
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DG("{inv}{bol}{gre}start of shell{eoc}");
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if (shell_init(ac, av))
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return (1);
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if ((fd = get_input_fd(av)) < 0)
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return (1);
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DG("JOBC is %s, fd=[%i]", 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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builtin_exit(NULL, NULL, NULL);
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return (0);
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}
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