X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=interactive.c;h=c34a0f6eb3c5ff3fd6fcb0e85546a180d21fd880;hp=9f2b71953c90f3148d17af0becf0b6a9f3eeaecd;hb=refs%2Fheads%2Fmaint;hpb=be7eec0e9944f493af023164fb2b0e9e48787f1e diff --git a/interactive.c b/interactive.c index 9f2b7195..9f4dec17 100644 --- a/interactive.c +++ b/interactive.c @@ -1,21 +1,15 @@ -/* - * Copyright (C) 2011-2014 Andre Noll - * - * Licensed under the GPL v2. For licencing details see COPYING. - */ +/* Copyright (C) 2011 Andre Noll , see file COPYING. */ /** \file interactive.c Readline abstraction for interactive sessions. */ +#include "para.h" + #include -#include -#include #include #include #include -#include #include -#include "para.h" #include "fd.h" #include "buffer_tree.h" #include "list.h" @@ -28,16 +22,19 @@ struct i9e_private { struct i9e_client_info *ici; FILE *stderr_stream; int num_columns; + int num_key_bindings; char empty_line[1000]; - struct task task; + char key_sequence[32]; + unsigned key_sequence_length; + struct task *task; struct btr_node *stdout_btrn; bool last_write_was_status; - bool line_handler_running; bool input_eof; bool caught_sigint; bool caught_sigterm; Keymap standard_km; Keymap bare_km; + int fd_flags[2]; }; static struct i9e_private i9e_private, *i9ep = &i9e_private; @@ -52,7 +49,7 @@ static struct i9e_private i9e_private, *i9ep = &i9e_private; */ int i9e_get_error(void) { - return i9ep->task.error; + return task_status(i9ep->task); } static bool is_prefix(const char *partial, const char *full, size_t len) @@ -205,26 +202,7 @@ void i9e_attach_to_stdout(struct btr_node *producer) static void wipe_bottom_line(void) { - char x[] = " "; - int n = i9ep->num_columns; - - /* - * For reasons beyond my understanding, writing more than 68 characters - * here causes MacOS to mess up the terminal. Writing a line of spaces - * in smaller chunks works fine though. Weird. - */ - fprintf(i9ep->stderr_stream, "\r"); - while (n > 0) { - if (n >= sizeof(x)) { - fprintf(i9ep->stderr_stream, "%s", x); - n -= sizeof(x); - continue; - } - x[n] = '\0'; - fprintf(i9ep->stderr_stream, "%s", x); - break; - } - fprintf(i9ep->stderr_stream, "\r"); + fprintf(i9ep->stderr_stream, "\r%s\r", i9ep->empty_line); } #ifndef RL_FREE_KEYMAP_DECLARED @@ -254,6 +232,8 @@ void i9e_close(void) if (hf) write_history(hf); wipe_bottom_line(); + fcntl(i9ep->ici->fds[0], F_SETFL, i9ep->fd_flags[0]); + fcntl(i9ep->ici->fds[1], F_SETFL, i9ep->fd_flags[1]); } static void clear_bottom_line(void) @@ -314,7 +294,7 @@ free_line: free(line); } -static int i9e_post_select(__a_unused struct sched *s, __a_unused struct task *t) +static int i9e_post_select(__a_unused struct sched *s, __a_unused void *context) { int ret; struct i9e_client_info *ici = i9ep->ici; @@ -330,8 +310,31 @@ static int i9e_post_select(__a_unused struct sched *s, __a_unused struct task *t ret = 0; if (i9ep->caught_sigint) goto rm_btrn; - while (input_available()) - rl_callback_read_char(); + while (input_available()) { + if (i9ep->stdout_btrn) { + while (i9ep->key_sequence_length < sizeof(i9ep->key_sequence) - 1) { + buf = i9ep->key_sequence + i9ep->key_sequence_length; + ret = read(i9ep->ici->fds[0], buf, 1); + if (ret < 0) { + ret = -ERRNO_TO_PARA_ERROR(errno); + goto rm_btrn; + } + if (ret == 0) { + ret = -E_I9E_EOF; + goto rm_btrn; + } + buf[1] = '\0'; + i9ep->key_sequence_length++; + rl_stuff_char((int)(unsigned char)*buf); + rl_callback_read_char(); + if (!input_available()) + break; + } + i9ep->key_sequence_length = 0; + } else + rl_callback_read_char(); + ret = 0; + } if (!i9ep->stdout_btrn) goto out; ret = btr_node_status(i9ep->stdout_btrn, 0, BTR_NT_LEAF); @@ -371,7 +374,7 @@ out: return ret; } -static void i9e_pre_select(struct sched *s, __a_unused struct task *t) +static void i9e_pre_select(struct sched *s, __a_unused void *context) { int ret; @@ -415,19 +418,30 @@ static void update_winsize(void) i9ep->empty_line[i9ep->num_columns] = '\0'; } -/** - * Defined key sequences are mapped to keys starting with this offset. I.e. - * pressing the first defined key sequence yields the key number \p KEY_OFFSET. - */ -#define KEY_OFFSET 64 - -static int dispatch_key(__a_unused int count, int key) +static int dispatch_key(__a_unused int count, __a_unused int key) { - int ret; + int i, ret; - assert(key >= KEY_OFFSET); - ret = i9ep->ici->key_handler(key - KEY_OFFSET); - return ret < 0? ret : 0; +again: + if (i9ep->key_sequence_length == 0) + return 0; + for (i = i9ep->num_key_bindings - 1; i >= 0; i--) { + if (strcmp(i9ep->key_sequence, i9ep->ici->bound_keyseqs[i])) + continue; + i9ep->key_sequence[0] = '\0'; + i9ep->key_sequence_length = 0; + ret = i9ep->ici->key_handler(i); + return ret < 0? ret : 0; + } + PARA_WARNING_LOG("ignoring key %d\n", i9ep->key_sequence[0]); + /* + * We received an undefined key sequence. Throw away the first byte, + * and try to parse the remainder. + */ + memmove(i9ep->key_sequence, i9ep->key_sequence + 1, + i9ep->key_sequence_length); /* move also terminating zero byte */ + i9ep->key_sequence_length--; + goto again; } /** @@ -439,24 +453,35 @@ static int dispatch_key(__a_unused int count, int key) * The caller must allocate and initialize the structure \a ici points to. * * \return Standard. - * \sa \ref register_task(). */ int i9e_open(struct i9e_client_info *ici, struct sched *s) { int ret; + memset(i9ep, 0, sizeof(struct i9e_private)); if (!isatty(ici->fds[0])) return -E_I9E_SETUPTERM; + ret = fcntl(ici->fds[0], F_GETFL); + if (ret < 0) + return -E_I9E_SETUPTERM; + i9ep->fd_flags[0] = ret; + ret = fcntl(ici->fds[1], F_GETFL); + if (ret < 0) + return -E_I9E_SETUPTERM; + i9ep->fd_flags[1] = ret; ret = mark_fd_nonblocking(ici->fds[0]); if (ret < 0) return ret; ret = mark_fd_nonblocking(ici->fds[1]); if (ret < 0) return ret; - i9ep->task.pre_select = i9e_pre_select; - i9ep->task.post_select = i9e_post_select; - sprintf(i9ep->task.status, "i9e"); - register_task(s, &i9ep->task); + i9ep->task = task_register(&(struct task_info) { + .name = "i9e", + .pre_select = i9e_pre_select, + .post_select = i9e_post_select, + .context = i9ep, + }, s); + rl_readline_name = "para_i9e"; rl_basic_word_break_characters = " "; rl_attempted_completion_function = i9e_completer; @@ -469,13 +494,18 @@ int i9e_open(struct i9e_client_info *ici, struct sched *s) if (ici->bound_keyseqs) { char *seq; int i; - /* FIXME: This is an arbitrary constant. */ - for (i = 0; i < 32 && (seq = ici->bound_keyseqs[i]); i++) { - char buf[2] = {KEY_OFFSET + i, '\0'}; - /* readline needs an allocated buffer for the macro */ - rl_generic_bind(ISMACR, seq, para_strdup(buf), i9ep->bare_km); - rl_bind_key_in_map(KEY_OFFSET + i, dispatch_key, i9ep->bare_km); + /* bind each key sequence to our dispatcher */ + for (i = 0; (seq = ici->bound_keyseqs[i]); i++) { + if (strlen(seq) >= sizeof(i9ep->key_sequence) - 1) { + PARA_WARNING_LOG("ignoring overlong key %s\n", + seq); + continue; + } + if (rl_bind_keyseq_in_map(seq, + dispatch_key, i9ep->bare_km) != 0) + PARA_WARNING_LOG("could not bind #%d: %s\n", i, seq); } + i9ep->num_key_bindings = i; } if (ici->history_file) read_history(ici->history_file); @@ -483,7 +513,6 @@ int i9e_open(struct i9e_client_info *ici, struct sched *s) if (ici->producer) { rl_callback_handler_install("", i9e_line_handler); i9e_attach_to_stdout(ici->producer); - rl_set_keymap(i9ep->bare_km); } else rl_callback_handler_install(i9ep->ici->prompt, i9e_line_handler); return 1; @@ -560,8 +589,6 @@ void ie9_print_status_bar(char *buf, unsigned len) * Tell i9e that the caller received a signal. * * \param sig_num The number of the signal received. - * - * Currently the function only cares about \p SIGINT, but this may change. */ void i9e_signal_dispatch(int sig_num) { @@ -740,17 +767,25 @@ int i9e_print_completions(struct i9e_completer *completers) ci.argc = create_argv(ci.buffer, " ", &ci.argv); ci.word_num = compute_word_num(ci.buffer, " ", ci.point); + /* determine the current word to complete */ end = ci.buffer + ci.point; + + if (*end == ' ') { + if (ci.point == 0 || ci.buffer[ci.point - 1] == ' ') { + ci.word = para_strdup(NULL); + goto create_matches; + } else /* The cursor is positioned right after a word */ + end--; + } for (p = end; p > ci.buffer && *p != ' '; p--) ; /* nothing */ if (*p == ' ') p++; - n = end - p + 1; ci.word = para_malloc(n + 1); strncpy(ci.word, p, n); ci.word[n] = '\0'; - +create_matches: PARA_DEBUG_LOG("line: %s, point: %d (%c), wordnum: %d, word: %s\n", ci.buffer, ci.point, ci.buffer[ci.point], ci.word_num, ci.word); if (ci.word_num == 0)