From ff38bddd4253b5adf08a84df34bfae32c8ae988d Mon Sep 17 00:00:00 2001 From: scratko Date: Fri, 14 Jun 2024 15:15:41 +0300 Subject: Shell-V release Added pipeline. Formatting shell.c (created lexical_analysys.c). Error codes. Some functions of queue.c are created by preprocessor. --- shell.h | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 shell.h (limited to 'shell.h') diff --git a/shell.h b/shell.h new file mode 100644 index 0000000..ec87f57 --- /dev/null +++ b/shell.h @@ -0,0 +1,61 @@ +#ifndef SHELL_H_SENTRY +#define SHELL_H_SENTRY + +#include "dynamic_array.h" +#include "queue.h" + +enum { + new_line = 10, + whitespace = ' ', + tab = 9, + esc = 27, + backslash = '\\', + double_quotes = '"' +}; + +/* two-letter tokens */ +enum { + append = '>' + 1, + and = '&' + 1, + or = '|' + 1 +}; + +/* error codes */ +enum { + err_filename_expected = 1, + err_redirect_stream_again = 2, + err_redirect_stream_in_pipeline = 3, + err_bg_process = 4, + err_empty_command = 5, + err_extra_chars_after_filename = 6, + err_odd_double_quotes = 7 +}; + +/* storing file names to redirect standard input/output streams */ +struct io_type { + char *input_stream; + char *output_stream; + char *output_stream_to_append; +}; + +struct param_type { + int is_word; + int escape_sequences; + unsigned int double_quotes_counter; + char stored_symbol; + int empty_word_flag; + int tokens; + int wrong_command; + struct io_type streams; + int last_execution_status; + int pipeline; +}; + +int filename_waiting(struct param_type *params); +void add_filename(struct dynamic_array *tmp_word, struct param_type *params); +void add_word(struct w_queue *word_chain, struct dynamic_array *tmp_word, + struct param_type *params); +int is_stream_redirection_set(const struct param_type *params); +char** create_cmdline(const struct w_queue *word_chain, int word_counter); + +#endif -- cgit v1.2.3