X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=interactive.c;h=484f9550cae9a8e03e2cd76843bd03d7d25fb825;hp=a18d82b717846d1deeec01c3dcaf88587837bc43;hb=074b80bb23b8fa610464bd98dc4bc7dd2babc88a;hpb=901f6642a51445accaf88ab80f6bc80757f74149 diff --git a/interactive.c b/interactive.c index a18d82b7..484f9550 100644 --- a/interactive.c +++ b/interactive.c @@ -1,21 +1,19 @@ /* - * Copyright (C) 2011-2012 Andre Noll + * Copyright (C) 2011 Andre Noll * * Licensed under the GPL v2. For licencing details see 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" @@ -29,8 +27,9 @@ struct i9e_private { FILE *stderr_stream; int num_columns; char empty_line[1000]; - struct task task; + struct task *task; struct btr_node *stdout_btrn; + bool last_write_was_status; bool line_handler_running; bool input_eof; bool caught_sigint; @@ -51,7 +50,7 @@ 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) @@ -226,6 +225,7 @@ static void wipe_bottom_line(void) fprintf(i9ep->stderr_stream, "\r"); } +#ifndef RL_FREE_KEYMAP_DECLARED /** * Free all storage associated with a keymap. * @@ -236,6 +236,7 @@ static void wipe_bottom_line(void) * \param keymap The keymap to deallocate. */ void rl_free_keymap(Keymap keymap); +#endif /** * Reset the terminal and save the in-memory command line history. @@ -271,6 +272,7 @@ static void clear_bottom_line(void) rl_redisplay(); wipe_bottom_line(); /* wipe out the prompt */ rl_insert_text(text); + free(text); rl_point = point; } @@ -289,29 +291,33 @@ static bool input_available(void) static void i9e_line_handler(char *line) { int ret; + struct btr_node *dummy; + if (!line) { + i9ep->input_eof = true; + return; + } + if (!*line) + goto free_line; + rl_set_prompt(""); + dummy = btr_new_node(&(struct btr_node_description) + EMBRACE(.name = "dummy line handler")); + i9e_attach_to_stdout(dummy); ret = i9ep->ici->line_handler(line); if (ret < 0) PARA_WARNING_LOG("%s\n", para_strerror(-ret)); - rl_set_prompt(""); - if (line) { - if (!*line) - rl_set_prompt(i9ep->ici->prompt); - else - add_history(line); - free(line); - } else { - rl_set_prompt(""); - i9ep->input_eof = true; - } + add_history(line); + btr_remove_node(&dummy); +free_line: + free(line); } -static void i9e_post_select(__a_unused struct sched *s, 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; char *buf; - size_t sz; + size_t sz, consumed = 0; ret = -E_I9E_EOF; if (i9ep->input_eof) @@ -333,16 +339,24 @@ static void i9e_post_select(__a_unused struct sched *s, struct task *t) } if (ret == 0) goto out; +again: sz = btr_next_buffer(i9ep->stdout_btrn, &buf); if (sz == 0) goto out; + if (i9ep->last_write_was_status) + fprintf(i9ep->stderr_stream, "\n"); + i9ep->last_write_was_status = false; ret = xwrite(ici->fds[1], buf, sz); if (ret < 0) goto rm_btrn; btr_consume(i9ep->stdout_btrn, ret); + consumed += ret; + if (ret == sz && consumed < 10000) + goto again; goto out; rm_btrn: if (i9ep->stdout_btrn) { + wipe_bottom_line(); btr_remove_node(&i9ep->stdout_btrn); rl_set_keymap(i9ep->standard_km); rl_set_prompt(i9ep->ici->prompt); @@ -352,10 +366,10 @@ rm_btrn: wipe_bottom_line(); out: i9ep->caught_sigint = false; - t->error = ret; + 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; @@ -423,7 +437,6 @@ 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) { @@ -437,10 +450,13 @@ int i9e_open(struct i9e_client_info *ici, struct sched *s) 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; @@ -503,6 +519,41 @@ __printf_2_3 void i9e_log(int ll, const char* fmt,...) vfprintf(i9ep->stderr_stream, fmt, argp); va_end(argp); reset_line_state(); + i9ep->last_write_was_status = false; +} + +/** + * Print the current status to stderr. + * + * \param buf The text to print. + * \param len The number of bytes in \a buf. + * + * This clears the bottom line, moves to the beginning of the line and prints + * the given text. If the length of this text exceeds the width of the + * terminal, the text is shortened by leaving out a part in the middle. + */ +void ie9_print_status_bar(char *buf, unsigned len) +{ + size_t x = i9ep->num_columns, y = (x - 4) / 2; + + assert(x >= 6); + if (len > x) { + buf[y] = '\0'; + fprintf(i9ep->stderr_stream, "\r%s", buf); + fprintf(i9ep->stderr_stream, " .. "); + fprintf(i9ep->stderr_stream, "%s", buf + len - y); + } else { + char scratch[1000]; + + y = x - len; + scratch[0] = '\r'; + strcpy(scratch + 1, buf); + memset(scratch + 1 + len, ' ', y); + scratch[1 + len + y] = '\r'; + scratch[2 + len + y] = '\0'; + fprintf(i9ep->stderr_stream, "\r%s", scratch); + } + i9ep->last_write_was_status = true; } /**