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https://github.com/vim/vim
synced 2025-03-16 14:57:52 +01:00
Problem: possible to escape bracketed paste mode with Ctrl-C Solution: Do not handle Ctrl-C specially when key_protocol is in use, makes bracketed paste mode more robust When a key protocol is in use Ctrl-C will be sent as an escape sequence, but a raw Ctrl-C can be sent when pasting data. Pass this through, so that a Ctrl-C can be pasted and won't result in exiting insert mode (where the rest of the pasted keys can cause all kind of nasty side-effects). Many terminals will strip control characters in paste data (and xterm will strip ^C since version 388), but this provides some defense in depth if users change settings like xterm's allowPasteControls. closes: #13398 Signed-off-by: David Leadbeater <dgl@dgl.cx> Signed-off-by: Christian Brabandt <cb@256bit.org>
1273 lines
30 KiB
C
1273 lines
30 KiB
C
/* vi:set ts=8 sts=4 sw=4 noet:
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*
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* VIM - Vi IMproved by Bram Moolenaar
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*
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* Do ":help uganda" in Vim to read copying and usage conditions.
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* Do ":help credits" in Vim to see a list of people who contributed.
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* See README.txt for an overview of the Vim source code.
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*/
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/*
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* ui.c: functions that handle the user interface.
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* 1. Keyboard input stuff, and a bit of windowing stuff. These are called
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* before the machine specific stuff (mch_*) so that we can call the GUI
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* stuff instead if the GUI is running.
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* 2. Input buffer stuff.
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*/
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#include "vim.h"
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void
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ui_write(char_u *s, int len, int console UNUSED)
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{
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#ifdef FEAT_GUI
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if (gui.in_use && !gui.dying && !gui.starting
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# ifndef NO_CONSOLE
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&& !console
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# endif
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)
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{
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gui_write(s, len);
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if (p_wd)
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gui_wait_for_chars(p_wd, typebuf.tb_change_cnt);
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return;
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}
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#endif
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#ifndef NO_CONSOLE
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// Don't output anything in silent mode ("ex -s") unless 'verbose' set
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if (!(silent_mode && p_verbose == 0))
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{
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# if !defined(MSWIN)
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char_u *tofree = NULL;
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if (output_conv.vc_type != CONV_NONE)
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{
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// Convert characters from 'encoding' to 'termencoding'.
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tofree = string_convert(&output_conv, s, &len);
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if (tofree != NULL)
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s = tofree;
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}
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# endif
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mch_write(s, len);
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# if defined(HAVE_FSYNC)
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if (console && s[len - 1] == '\n')
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vim_fsync(1);
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# endif
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# if !defined(MSWIN)
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if (output_conv.vc_type != CONV_NONE)
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vim_free(tofree);
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# endif
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}
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#endif
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}
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#if defined(UNIX) || defined(VMS) || defined(PROTO) || defined(MSWIN)
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/*
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* When executing an external program, there may be some typed characters that
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* are not consumed by it. Give them back to ui_inchar() and they are stored
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* here for the next call.
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*/
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static char_u *ta_str = NULL;
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static int ta_off; // offset for next char to use when ta_str != NULL
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static int ta_len; // length of ta_str when it's not NULL
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void
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ui_inchar_undo(char_u *s, int len)
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{
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char_u *new;
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int newlen;
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newlen = len;
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if (ta_str != NULL)
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newlen += ta_len - ta_off;
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new = alloc(newlen);
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if (new == NULL)
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return;
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if (ta_str != NULL)
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{
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mch_memmove(new, ta_str + ta_off, (size_t)(ta_len - ta_off));
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mch_memmove(new + ta_len - ta_off, s, (size_t)len);
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vim_free(ta_str);
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}
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else
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mch_memmove(new, s, (size_t)len);
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ta_str = new;
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ta_len = newlen;
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ta_off = 0;
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}
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#endif
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/*
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* ui_inchar(): low level input function.
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* Get characters from the keyboard.
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* Return the number of characters that are available.
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* If "wtime" == 0 do not wait for characters.
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* If "wtime" == -1 wait forever for characters.
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* If "wtime" > 0 wait "wtime" milliseconds for a character.
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*
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* "tb_change_cnt" is the value of typebuf.tb_change_cnt if "buf" points into
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* it. When typebuf.tb_change_cnt changes (e.g., when a message is received
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* from a remote client) "buf" can no longer be used. "tb_change_cnt" is NULL
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* otherwise.
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*/
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int
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ui_inchar(
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char_u *buf,
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int maxlen,
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long wtime, // don't use "time", MIPS cannot handle it
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int tb_change_cnt)
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{
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int retval = 0;
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#if defined(FEAT_GUI) && (defined(UNIX) || defined(VMS))
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/*
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* Use the typeahead if there is any.
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*/
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if (ta_str != NULL)
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{
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if (maxlen >= ta_len - ta_off)
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{
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mch_memmove(buf, ta_str + ta_off, (size_t)ta_len);
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VIM_CLEAR(ta_str);
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return ta_len;
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}
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mch_memmove(buf, ta_str + ta_off, (size_t)maxlen);
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ta_off += maxlen;
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return maxlen;
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}
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#endif
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#ifdef FEAT_PROFILE
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if (do_profiling == PROF_YES && wtime != 0)
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prof_inchar_enter();
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#endif
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#ifdef NO_CONSOLE_INPUT
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// Don't wait for character input when the window hasn't been opened yet.
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// Do try reading, this works when redirecting stdin from a file.
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// Must return something, otherwise we'll loop forever. If we run into
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// this very often we probably got stuck, exit Vim.
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if (no_console_input())
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{
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static int count = 0;
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# ifndef NO_CONSOLE
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retval = mch_inchar(buf, maxlen, wtime, tb_change_cnt);
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if (retval > 0 || typebuf_changed(tb_change_cnt) || wtime >= 0)
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goto theend;
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# endif
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if (wtime == -1 && ++count == 1000)
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read_error_exit();
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buf[0] = CAR;
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retval = 1;
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goto theend;
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}
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#endif
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// If we are going to wait for some time or block...
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if (wtime == -1 || wtime > 100L)
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{
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// ... allow signals to kill us.
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(void)vim_handle_signal(SIGNAL_UNBLOCK);
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// ... there is no need for CTRL-C to interrupt something, don't let
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// it set got_int when it was mapped.
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if ((mapped_ctrl_c | curbuf->b_mapped_ctrl_c) & get_real_state())
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ctrl_c_interrupts = FALSE;
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}
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/*
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* Here we call gui_inchar() or mch_inchar(), the GUI or machine-dependent
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* input function. The functionality they implement is like this:
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*
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* while (not timed out)
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* {
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* handle-resize;
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* parse-queued-messages;
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* if (waited for 'updatetime')
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* trigger-cursorhold;
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* ui_wait_for_chars_or_timer()
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* if (character available)
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* break;
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* }
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*
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* ui_wait_for_chars_or_timer() does:
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*
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* while (not timed out)
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* {
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* if (any-timer-triggered)
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* invoke-timer-callback;
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* wait-for-character();
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* if (character available)
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* break;
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* }
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*
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* wait-for-character() does:
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* while (not timed out)
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* {
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* Wait for event;
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* if (something on channel)
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* read/write channel;
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* else if (resized)
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* handle_resize();
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* else if (system event)
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* deal-with-system-event;
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* else if (character available)
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* break;
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* }
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*
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*/
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#ifdef FEAT_GUI
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if (gui.in_use)
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retval = gui_inchar(buf, maxlen, wtime, tb_change_cnt);
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#endif
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#ifndef NO_CONSOLE
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# ifdef FEAT_GUI
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else
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# endif
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retval = mch_inchar(buf, maxlen, wtime, tb_change_cnt);
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#endif
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if (wtime == -1 || wtime > 100L)
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// block SIGHUP et al.
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(void)vim_handle_signal(SIGNAL_BLOCK);
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ctrl_c_interrupts = TRUE;
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#ifdef NO_CONSOLE_INPUT
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theend:
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#endif
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#ifdef FEAT_PROFILE
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if (do_profiling == PROF_YES && wtime != 0)
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prof_inchar_exit();
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#endif
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return retval;
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}
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#if defined(UNIX) || defined(VMS) || defined(FEAT_GUI) || defined(PROTO)
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/*
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* Common code for mch_inchar() and gui_inchar(): Wait for a while or
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* indefinitely until characters are available, dealing with timers and
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* messages on channels.
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*
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* "buf" may be NULL if the available characters are not to be returned, only
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* check if they are available.
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*
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* Return the number of characters that are available.
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* If "wtime" == 0 do not wait for characters.
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* If "wtime" == n wait a short time for characters.
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* If "wtime" == -1 wait forever for characters.
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*/
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int
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inchar_loop(
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char_u *buf,
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int maxlen,
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long wtime, // don't use "time", MIPS cannot handle it
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int tb_change_cnt,
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int (*wait_func)(long wtime, int *interrupted, int ignore_input),
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int (*resize_func)(int check_only))
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{
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int len;
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int interrupted = FALSE;
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int did_call_wait_func = FALSE;
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int did_start_blocking = FALSE;
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long wait_time;
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long elapsed_time = 0;
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#ifdef ELAPSED_FUNC
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elapsed_T start_tv;
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ELAPSED_INIT(start_tv);
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#endif
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// repeat until we got a character or waited long enough
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for (;;)
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{
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// Check if window changed size while we were busy, perhaps the ":set
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// columns=99" command was used.
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if (resize_func != NULL)
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resize_func(FALSE);
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#ifdef MESSAGE_QUEUE
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// Only process messages when waiting.
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if (wtime != 0)
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{
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parse_queued_messages();
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// If input was put directly in typeahead buffer bail out here.
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if (typebuf_changed(tb_change_cnt))
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return 0;
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}
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#endif
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if (wtime < 0 && did_start_blocking)
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// blocking and already waited for p_ut
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wait_time = -1;
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else
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{
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if (wtime >= 0)
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wait_time = wtime;
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else
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// going to block after p_ut
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wait_time = p_ut;
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#ifdef ELAPSED_FUNC
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elapsed_time = ELAPSED_FUNC(start_tv);
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#endif
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wait_time -= elapsed_time;
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// If the waiting time is now zero or less, we timed out. However,
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// loop at least once to check for characters and events. Matters
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// when "wtime" is zero.
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if (wait_time <= 0 && did_call_wait_func)
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{
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if (wtime >= 0)
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// no character available within "wtime"
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return 0;
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// No character available within 'updatetime'.
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did_start_blocking = TRUE;
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if (trigger_cursorhold() && maxlen >= 3
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&& !typebuf_changed(tb_change_cnt))
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{
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// Put K_CURSORHOLD in the input buffer or return it.
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if (buf == NULL)
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{
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char_u ibuf[3];
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ibuf[0] = CSI;
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ibuf[1] = KS_EXTRA;
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ibuf[2] = (int)KE_CURSORHOLD;
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add_to_input_buf(ibuf, 3);
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}
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else
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{
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buf[0] = K_SPECIAL;
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buf[1] = KS_EXTRA;
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buf[2] = (int)KE_CURSORHOLD;
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}
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return 3;
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}
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// There is no character available within 'updatetime' seconds:
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// flush all the swap files to disk. Also done when
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// interrupted by SIGWINCH.
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before_blocking();
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continue;
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}
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}
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#ifdef FEAT_JOB_CHANNEL
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if (wait_time < 0 || wait_time > 100L)
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{
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// Checking if a job ended requires polling. Do this at least
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// every 100 msec.
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if (has_pending_job())
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wait_time = 100L;
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// If there is readahead then parse_queued_messages() timed out and
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// we should call it again soon.
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if (channel_any_readahead())
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wait_time = 10L;
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}
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#endif
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#ifdef FEAT_BEVAL_GUI
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if (p_beval && wait_time > 100L)
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// The 'balloonexpr' may indirectly invoke a callback while waiting
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// for a character, need to check often.
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wait_time = 100L;
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#endif
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// Wait for a character to be typed or another event, such as the winch
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// signal or an event on the monitored file descriptors.
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did_call_wait_func = TRUE;
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if (wait_func(wait_time, &interrupted, FALSE))
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{
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// If input was put directly in typeahead buffer bail out here.
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if (typebuf_changed(tb_change_cnt))
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return 0;
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// We might have something to return now.
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if (buf == NULL)
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// "buf" is NULL, we were just waiting, not actually getting
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// input.
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return input_available();
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len = read_from_input_buf(buf, (long)maxlen);
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if (len > 0)
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return len;
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continue;
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}
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// Timed out or interrupted with no character available.
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#ifndef ELAPSED_FUNC
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// estimate the elapsed time
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elapsed_time += wait_time;
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#endif
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if ((resize_func != NULL && resize_func(TRUE))
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#if defined(FEAT_CLIENTSERVER) && defined(UNIX)
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|| server_waiting()
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#endif
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#ifdef MESSAGE_QUEUE
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|| interrupted
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#endif
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|| wait_time > 0
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|| (wtime < 0 && !did_start_blocking))
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// no character available, but something to be done, keep going
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continue;
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// no character available or interrupted, return zero
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break;
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}
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return 0;
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}
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#endif
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#if defined(FEAT_TIMERS) || defined(PROTO)
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/*
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* Wait for a timer to fire or "wait_func" to return non-zero.
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* Returns OK when something was read.
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* Returns FAIL when it timed out or was interrupted.
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*/
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int
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ui_wait_for_chars_or_timer(
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long wtime,
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int (*wait_func)(long wtime, int *interrupted, int ignore_input),
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int *interrupted,
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int ignore_input)
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{
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int due_time;
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long remaining = wtime;
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int tb_change_cnt = typebuf.tb_change_cnt;
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# ifdef FEAT_JOB_CHANNEL
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int brief_wait = FALSE;
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# endif
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// When waiting very briefly don't trigger timers.
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if (wtime >= 0 && wtime < 10L)
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return wait_func(wtime, NULL, ignore_input);
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while (wtime < 0 || remaining > 0)
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{
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// Trigger timers and then get the time in wtime until the next one is
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// due. Wait up to that time.
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due_time = check_due_timer();
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if (typebuf.tb_change_cnt != tb_change_cnt)
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{
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// timer may have used feedkeys()
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return FAIL;
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}
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if (due_time <= 0 || (wtime > 0 && due_time > remaining))
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due_time = remaining;
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# if defined(FEAT_JOB_CHANNEL) || defined(FEAT_SOUND_CANBERRA) || defined(FEAT_SOUND_MACOSX)
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if ((due_time < 0 || due_time > 10L) && (
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# if defined(FEAT_JOB_CHANNEL)
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(
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# if defined(FEAT_GUI)
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!gui.in_use &&
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# endif
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(has_pending_job() || channel_any_readahead()))
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# if defined(FEAT_SOUND_CANBERRA) || defined(FEAT_SOUND_MACOSX)
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||
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# endif
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# endif
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# if defined(FEAT_SOUND_CANBERRA) || defined(FEAT_SOUND_MACOSX)
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has_any_sound_callback()
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# endif
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))
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{
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// There is a pending job or channel, should return soon in order
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// to handle them ASAP. Do check for input briefly.
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due_time = 10L;
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# ifdef FEAT_JOB_CHANNEL
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brief_wait = TRUE;
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# endif
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}
|
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# endif
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if (wait_func(due_time, interrupted, ignore_input))
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return OK;
|
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if ((interrupted != NULL && *interrupted)
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# ifdef FEAT_JOB_CHANNEL
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|| brief_wait
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|
# endif
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|
)
|
|
// Nothing available, but need to return so that side effects get
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|
// handled, such as handling a message on a channel.
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return FAIL;
|
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if (wtime > 0)
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remaining -= due_time;
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}
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return FAIL;
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}
|
|
#endif
|
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|
|
/*
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|
* Return non-zero if a character is available.
|
|
*/
|
|
int
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ui_char_avail(void)
|
|
{
|
|
#ifdef FEAT_GUI
|
|
if (gui.in_use)
|
|
{
|
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gui_mch_update();
|
|
return input_available();
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|
}
|
|
#endif
|
|
#ifndef NO_CONSOLE
|
|
# ifdef NO_CONSOLE_INPUT
|
|
if (no_console_input())
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|
return 0;
|
|
# endif
|
|
return mch_char_avail();
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|
#else
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|
return 0;
|
|
#endif
|
|
}
|
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|
|
/*
|
|
* Delay for the given number of milliseconds. If ignoreinput is FALSE then we
|
|
* cancel the delay if a key is hit.
|
|
*/
|
|
void
|
|
ui_delay(long msec_arg, int ignoreinput)
|
|
{
|
|
long msec = msec_arg;
|
|
|
|
#ifdef FEAT_EVAL
|
|
if (ui_delay_for_testing > 0)
|
|
msec = ui_delay_for_testing;
|
|
ch_log(NULL, "ui_delay(%ld)", msec);
|
|
#endif
|
|
#ifdef FEAT_GUI
|
|
if (gui.in_use && !ignoreinput)
|
|
gui_wait_for_chars(msec, typebuf.tb_change_cnt);
|
|
else
|
|
#endif
|
|
mch_delay(msec, ignoreinput ? MCH_DELAY_IGNOREINPUT : 0);
|
|
}
|
|
|
|
/*
|
|
* If the machine has job control, use it to suspend the program,
|
|
* otherwise fake it by starting a new shell.
|
|
* When running the GUI iconify the window.
|
|
*/
|
|
void
|
|
ui_suspend(void)
|
|
{
|
|
#ifdef FEAT_GUI
|
|
if (gui.in_use)
|
|
{
|
|
gui_mch_iconify();
|
|
return;
|
|
}
|
|
#endif
|
|
mch_suspend();
|
|
}
|
|
|
|
#if !defined(UNIX) || !defined(SIGTSTP) || defined(PROTO)
|
|
/*
|
|
* When the OS can't really suspend, call this function to start a shell.
|
|
* This is never called in the GUI.
|
|
*/
|
|
void
|
|
suspend_shell(void)
|
|
{
|
|
if (*p_sh == NUL)
|
|
emsg(_(e_shell_option_is_empty));
|
|
else
|
|
{
|
|
msg_puts(_("new shell started\n"));
|
|
do_shell(NULL, 0);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Try to get the current Vim shell size. Put the result in Rows and Columns.
|
|
* Use the new sizes as defaults for 'columns' and 'lines'.
|
|
* Return OK when size could be determined, FAIL otherwise.
|
|
*/
|
|
int
|
|
ui_get_shellsize(void)
|
|
{
|
|
int retval;
|
|
|
|
#ifdef FEAT_GUI
|
|
if (gui.in_use)
|
|
retval = gui_get_shellsize();
|
|
else
|
|
#endif
|
|
retval = mch_get_shellsize();
|
|
|
|
check_shellsize();
|
|
|
|
// adjust the default for 'lines' and 'columns'
|
|
if (retval == OK)
|
|
{
|
|
set_number_default("lines", Rows);
|
|
set_number_default("columns", Columns);
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* Set the size of the Vim shell according to Rows and Columns, if possible.
|
|
* The gui_set_shellsize() or mch_set_shellsize() function will try to set the
|
|
* new size. If this is not possible, it will adjust Rows and Columns.
|
|
*/
|
|
void
|
|
ui_set_shellsize(
|
|
int mustset UNUSED) // set by the user
|
|
{
|
|
#ifdef FEAT_GUI
|
|
if (gui.in_use)
|
|
gui_set_shellsize(mustset, TRUE, RESIZE_BOTH);
|
|
else
|
|
#endif
|
|
mch_set_shellsize();
|
|
}
|
|
|
|
/*
|
|
* Called when Rows and/or Columns changed. Adjust scroll region and mouse
|
|
* region.
|
|
*/
|
|
void
|
|
ui_new_shellsize(void)
|
|
{
|
|
if (full_screen && !exiting)
|
|
{
|
|
#ifdef FEAT_GUI
|
|
if (gui.in_use)
|
|
gui_new_shellsize();
|
|
else
|
|
#endif
|
|
mch_new_shellsize();
|
|
}
|
|
}
|
|
|
|
#if ((defined(FEAT_EVAL) || defined(FEAT_TERMINAL)) \
|
|
&& (defined(FEAT_GUI) \
|
|
|| defined(MSWIN) \
|
|
|| (defined(HAVE_TGETENT) && defined(FEAT_TERMRESPONSE)))) \
|
|
|| defined(PROTO)
|
|
/*
|
|
* Get the window position in pixels, if possible.
|
|
* Return FAIL when not possible.
|
|
*/
|
|
int
|
|
ui_get_winpos(int *x, int *y, varnumber_T timeout UNUSED)
|
|
{
|
|
# ifdef FEAT_GUI
|
|
if (gui.in_use)
|
|
return gui_mch_get_winpos(x, y);
|
|
# endif
|
|
# if defined(MSWIN) && (!defined(FEAT_GUI) || defined(VIMDLL))
|
|
return mch_get_winpos(x, y);
|
|
# else
|
|
# if defined(HAVE_TGETENT) && defined(FEAT_TERMRESPONSE)
|
|
return term_get_winpos(x, y, timeout);
|
|
# else
|
|
return FAIL;
|
|
# endif
|
|
# endif
|
|
}
|
|
#endif
|
|
|
|
void
|
|
ui_breakcheck(void)
|
|
{
|
|
ui_breakcheck_force(FALSE);
|
|
}
|
|
|
|
/*
|
|
* When "force" is true also check when the terminal is not in raw mode.
|
|
* This is useful to read input on channels.
|
|
*/
|
|
void
|
|
ui_breakcheck_force(int force)
|
|
{
|
|
static int recursive = FALSE;
|
|
int save_updating_screen = updating_screen;
|
|
|
|
// We could be called recursively if stderr is redirected, calling
|
|
// fill_input_buf() calls settmode() when stdin isn't a tty. settmode()
|
|
// calls vgetorpeek() which calls ui_breakcheck() again.
|
|
if (recursive)
|
|
return;
|
|
recursive = TRUE;
|
|
|
|
// We do not want gui_resize_shell() to redraw the screen here.
|
|
++updating_screen;
|
|
|
|
#ifdef FEAT_GUI
|
|
if (gui.in_use)
|
|
gui_mch_update();
|
|
else
|
|
#endif
|
|
mch_breakcheck(force);
|
|
|
|
if (save_updating_screen)
|
|
updating_screen = TRUE;
|
|
else
|
|
after_updating_screen(FALSE);
|
|
|
|
recursive = FALSE;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// Functions that handle the input buffer.
|
|
// This is used for any GUI version, and the unix terminal version.
|
|
//
|
|
// For Unix, the input characters are buffered to be able to check for a
|
|
// CTRL-C. This should be done with signals, but I don't know how to do that
|
|
// in a portable way for a tty in RAW mode.
|
|
//
|
|
// For the client-server code in the console the received keys are put in the
|
|
// input buffer.
|
|
|
|
#if defined(USE_INPUT_BUF) || defined(PROTO)
|
|
|
|
/*
|
|
* Internal typeahead buffer. Includes extra space for long key code
|
|
* descriptions which would otherwise overflow. The buffer is considered full
|
|
* when only this extra space (or part of it) remains.
|
|
*/
|
|
#if defined(FEAT_JOB_CHANNEL) || defined(FEAT_CLIENTSERVER)
|
|
/*
|
|
* NetBeans stuffs debugger commands into the input buffer.
|
|
* This requires a larger buffer...
|
|
* (Madsen) Go with this for remote input as well ...
|
|
*/
|
|
# define INBUFLEN 4096
|
|
#else
|
|
# define INBUFLEN 250
|
|
#endif
|
|
|
|
static char_u inbuf[INBUFLEN + MAX_KEY_CODE_LEN];
|
|
static int inbufcount = 0; // number of chars in inbuf[]
|
|
|
|
/*
|
|
* vim_is_input_buf_full(), vim_is_input_buf_empty(), add_to_input_buf(), and
|
|
* trash_input_buf() are functions for manipulating the input buffer. These
|
|
* are used by the gui_* calls when a GUI is used to handle keyboard input.
|
|
*/
|
|
|
|
int
|
|
vim_is_input_buf_full(void)
|
|
{
|
|
return (inbufcount >= INBUFLEN);
|
|
}
|
|
|
|
int
|
|
vim_is_input_buf_empty(void)
|
|
{
|
|
return (inbufcount == 0);
|
|
}
|
|
|
|
#if defined(FEAT_OLE) || defined(PROTO)
|
|
int
|
|
vim_free_in_input_buf(void)
|
|
{
|
|
return (INBUFLEN - inbufcount);
|
|
}
|
|
#endif
|
|
|
|
#if defined(FEAT_GUI_GTK) || defined(PROTO)
|
|
int
|
|
vim_used_in_input_buf(void)
|
|
{
|
|
return inbufcount;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Return the current contents of the input buffer and make it empty.
|
|
* The returned pointer must be passed to set_input_buf() later.
|
|
*/
|
|
char_u *
|
|
get_input_buf(void)
|
|
{
|
|
garray_T *gap;
|
|
|
|
// We use a growarray to store the data pointer and the length.
|
|
gap = ALLOC_ONE(garray_T);
|
|
if (gap != NULL)
|
|
{
|
|
// Add one to avoid a zero size.
|
|
gap->ga_data = alloc(inbufcount + 1);
|
|
if (gap->ga_data != NULL)
|
|
mch_memmove(gap->ga_data, inbuf, (size_t)inbufcount);
|
|
gap->ga_len = inbufcount;
|
|
}
|
|
trash_input_buf();
|
|
return (char_u *)gap;
|
|
}
|
|
|
|
/*
|
|
* Restore the input buffer with a pointer returned from get_input_buf().
|
|
* The allocated memory is freed, this only works once!
|
|
* When "overwrite" is FALSE input typed later is kept.
|
|
*/
|
|
void
|
|
set_input_buf(char_u *p, int overwrite)
|
|
{
|
|
garray_T *gap = (garray_T *)p;
|
|
|
|
if (gap == NULL)
|
|
return;
|
|
|
|
if (gap->ga_data != NULL)
|
|
{
|
|
if (overwrite || inbufcount + gap->ga_len >= INBUFLEN)
|
|
{
|
|
mch_memmove(inbuf, gap->ga_data, gap->ga_len);
|
|
inbufcount = gap->ga_len;
|
|
}
|
|
else
|
|
{
|
|
mch_memmove(inbuf + gap->ga_len, inbuf, inbufcount);
|
|
mch_memmove(inbuf, gap->ga_data, gap->ga_len);
|
|
inbufcount += gap->ga_len;
|
|
}
|
|
vim_free(gap->ga_data);
|
|
}
|
|
vim_free(gap);
|
|
}
|
|
|
|
/*
|
|
* Add the given bytes to the input buffer
|
|
* Special keys start with CSI. A real CSI must have been translated to
|
|
* CSI KS_EXTRA KE_CSI. K_SPECIAL doesn't require translation.
|
|
*/
|
|
void
|
|
add_to_input_buf(char_u *s, int len)
|
|
{
|
|
if (inbufcount + len > INBUFLEN + MAX_KEY_CODE_LEN)
|
|
return; // Shouldn't ever happen!
|
|
|
|
while (len--)
|
|
inbuf[inbufcount++] = *s++;
|
|
}
|
|
|
|
/*
|
|
* Add "str[len]" to the input buffer while escaping CSI bytes.
|
|
*/
|
|
void
|
|
add_to_input_buf_csi(char_u *str, int len)
|
|
{
|
|
int i;
|
|
char_u buf[2];
|
|
|
|
for (i = 0; i < len; ++i)
|
|
{
|
|
add_to_input_buf(str + i, 1);
|
|
if (str[i] == CSI)
|
|
{
|
|
// Turn CSI into K_CSI.
|
|
buf[0] = KS_EXTRA;
|
|
buf[1] = (int)KE_CSI;
|
|
add_to_input_buf(buf, 2);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Remove everything from the input buffer. Called when ^C is found.
|
|
*/
|
|
void
|
|
trash_input_buf(void)
|
|
{
|
|
inbufcount = 0;
|
|
}
|
|
|
|
/*
|
|
* Read as much data from the input buffer as possible up to maxlen, and store
|
|
* it in buf.
|
|
*/
|
|
int
|
|
read_from_input_buf(char_u *buf, long maxlen)
|
|
{
|
|
if (inbufcount == 0) // if the buffer is empty, fill it
|
|
fill_input_buf(TRUE);
|
|
if (maxlen > inbufcount)
|
|
maxlen = inbufcount;
|
|
mch_memmove(buf, inbuf, (size_t)maxlen);
|
|
inbufcount -= maxlen;
|
|
// check "maxlen" to avoid clang warning
|
|
if (inbufcount > 0 && maxlen > 0)
|
|
mch_memmove(inbuf, inbuf + maxlen, (size_t)inbufcount);
|
|
return (int)maxlen;
|
|
}
|
|
|
|
void
|
|
fill_input_buf(int exit_on_error UNUSED)
|
|
{
|
|
#if defined(UNIX) || defined(VMS) || defined(MACOS_X)
|
|
int len;
|
|
int try;
|
|
static int did_read_something = FALSE;
|
|
static char_u *rest = NULL; // unconverted rest of previous read
|
|
static int restlen = 0;
|
|
int unconverted;
|
|
#endif
|
|
|
|
#ifdef FEAT_GUI
|
|
if (gui.in_use
|
|
# ifdef NO_CONSOLE_INPUT
|
|
// Don't use the GUI input when the window hasn't been opened yet.
|
|
// We get here from ui_inchar() when we should try reading from stdin.
|
|
&& !no_console_input()
|
|
# endif
|
|
)
|
|
{
|
|
gui_mch_update();
|
|
return;
|
|
}
|
|
#endif
|
|
#if defined(UNIX) || defined(VMS) || defined(MACOS_X)
|
|
if (vim_is_input_buf_full())
|
|
return;
|
|
/*
|
|
* Fill_input_buf() is only called when we really need a character.
|
|
* If we can't get any, but there is some in the buffer, just return.
|
|
* If we can't get any, and there isn't any in the buffer, we give up and
|
|
* exit Vim.
|
|
*/
|
|
if (rest != NULL)
|
|
{
|
|
// Use remainder of previous call, starts with an invalid character
|
|
// that may become valid when reading more.
|
|
if (restlen > INBUFLEN - inbufcount)
|
|
unconverted = INBUFLEN - inbufcount;
|
|
else
|
|
unconverted = restlen;
|
|
mch_memmove(inbuf + inbufcount, rest, unconverted);
|
|
if (unconverted == restlen)
|
|
VIM_CLEAR(rest);
|
|
else
|
|
{
|
|
restlen -= unconverted;
|
|
mch_memmove(rest, rest + unconverted, restlen);
|
|
}
|
|
inbufcount += unconverted;
|
|
}
|
|
else
|
|
unconverted = 0;
|
|
|
|
len = 0; // to avoid gcc warning
|
|
for (try = 0; try < 100; ++try)
|
|
{
|
|
size_t readlen = (size_t)((INBUFLEN - inbufcount)
|
|
/ input_conv.vc_factor);
|
|
# ifdef VMS
|
|
len = vms_read((char *)inbuf + inbufcount, readlen);
|
|
# else
|
|
len = read(read_cmd_fd, (char *)inbuf + inbufcount, readlen);
|
|
# endif
|
|
# ifdef FEAT_EVAL
|
|
if (len > 0)
|
|
{
|
|
inbuf[inbufcount + len] = NUL;
|
|
ch_log(NULL, "raw key input: \"%s\"", inbuf + inbufcount);
|
|
}
|
|
# endif
|
|
|
|
if (len > 0 || got_int)
|
|
break;
|
|
/*
|
|
* If reading stdin results in an error, continue reading stderr.
|
|
* This helps when using "foo | xargs vim".
|
|
*/
|
|
if (!did_read_something && !isatty(read_cmd_fd) && read_cmd_fd == 0)
|
|
{
|
|
int m = cur_tmode;
|
|
|
|
// We probably set the wrong file descriptor to raw mode. Switch
|
|
// back to cooked mode, use another descriptor and set the mode to
|
|
// what it was.
|
|
settmode(TMODE_COOK);
|
|
#ifdef HAVE_DUP
|
|
// Use stderr for stdin, also works for shell commands.
|
|
close(0);
|
|
vim_ignored = dup(2);
|
|
#else
|
|
read_cmd_fd = 2; // read from stderr instead of stdin
|
|
#endif
|
|
settmode(m);
|
|
}
|
|
if (!exit_on_error)
|
|
return;
|
|
}
|
|
if (len <= 0 && !got_int)
|
|
read_error_exit();
|
|
if (len > 0)
|
|
did_read_something = TRUE;
|
|
if (got_int)
|
|
{
|
|
// Interrupted, pretend a CTRL-C was typed.
|
|
inbuf[0] = 3;
|
|
inbufcount = 1;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* May perform conversion on the input characters.
|
|
* Include the unconverted rest of the previous call.
|
|
* If there is an incomplete char at the end it is kept for the next
|
|
* time, reading more bytes should make conversion possible.
|
|
* Don't do this in the unlikely event that the input buffer is too
|
|
* small ("rest" still contains more bytes).
|
|
*/
|
|
if (input_conv.vc_type != CONV_NONE)
|
|
{
|
|
inbufcount -= unconverted;
|
|
len = convert_input_safe(inbuf + inbufcount,
|
|
len + unconverted, INBUFLEN - inbufcount,
|
|
rest == NULL ? &rest : NULL, &restlen);
|
|
}
|
|
while (len > 0)
|
|
{
|
|
// If a CTRL-C was typed, remove it from the buffer and set
|
|
// got_int. Also recognize CTRL-C with modifyOtherKeys set, lower
|
|
// and upper case, in two forms.
|
|
// If terminal key protocols are in use, we expect to receive
|
|
// Ctrl_C as an escape sequence, ignore a raw Ctrl_C as this could
|
|
// be paste data.
|
|
if (ctrl_c_interrupts
|
|
&& ((inbuf[inbufcount] == Ctrl_C && !key_protocol_enabled())
|
|
|| (len >= 10 && STRNCMP(inbuf + inbufcount,
|
|
"\033[27;5;99~", 10) == 0)
|
|
|| (len >= 10 && STRNCMP(inbuf + inbufcount,
|
|
"\033[27;5;67~", 10) == 0)
|
|
|| (len >= 7 && STRNCMP(inbuf + inbufcount,
|
|
"\033[99;5u", 7) == 0)
|
|
|| (len >= 7 && STRNCMP(inbuf + inbufcount,
|
|
"\033[67;5u", 7) == 0)))
|
|
{
|
|
// remove everything typed before the CTRL-C
|
|
mch_memmove(inbuf, inbuf + inbufcount, (size_t)(len));
|
|
inbufcount = 0;
|
|
got_int = TRUE;
|
|
}
|
|
--len;
|
|
++inbufcount;
|
|
}
|
|
}
|
|
#endif // UNIX || VMS || MACOS_X
|
|
}
|
|
#endif // USE_INPUT_BUF
|
|
|
|
/*
|
|
* Exit because of an input read error.
|
|
*/
|
|
void
|
|
read_error_exit(void)
|
|
{
|
|
if (silent_mode) // Normal way to exit for "ex -s"
|
|
getout(0);
|
|
STRCPY(IObuff, _("Vim: Error reading input, exiting...\n"));
|
|
preserve_exit();
|
|
}
|
|
|
|
#if defined(CURSOR_SHAPE) || defined(PROTO)
|
|
/*
|
|
* May update the shape of the cursor.
|
|
*/
|
|
void
|
|
ui_cursor_shape_forced(int forced)
|
|
{
|
|
# ifdef FEAT_GUI
|
|
if (gui.in_use)
|
|
gui_update_cursor_later();
|
|
else
|
|
# endif
|
|
term_cursor_mode(forced);
|
|
|
|
# ifdef MCH_CURSOR_SHAPE
|
|
mch_update_cursor();
|
|
# endif
|
|
|
|
# ifdef FEAT_CONCEAL
|
|
conceal_check_cursor_line(FALSE);
|
|
# endif
|
|
}
|
|
|
|
void
|
|
ui_cursor_shape(void)
|
|
{
|
|
ui_cursor_shape_forced(FALSE);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Check bounds for column number
|
|
*/
|
|
int
|
|
check_col(int col)
|
|
{
|
|
if (col < 0)
|
|
return 0;
|
|
if (col >= screen_Columns)
|
|
return screen_Columns - 1;
|
|
return col;
|
|
}
|
|
|
|
/*
|
|
* Check bounds for row number
|
|
*/
|
|
int
|
|
check_row(int row)
|
|
{
|
|
if (row < 0)
|
|
return 0;
|
|
if (row >= screen_Rows)
|
|
return screen_Rows - 1;
|
|
return row;
|
|
}
|
|
|
|
/*
|
|
* Return length of line "lnum" in screen cells for horizontal scrolling.
|
|
*/
|
|
long
|
|
scroll_line_len(linenr_T lnum)
|
|
{
|
|
char_u *p = ml_get(lnum);
|
|
colnr_T col = 0;
|
|
|
|
if (*p != NUL)
|
|
for (;;)
|
|
{
|
|
int w = chartabsize(p, col);
|
|
MB_PTR_ADV(p);
|
|
if (*p == NUL) // don't count the last character
|
|
break;
|
|
col += w;
|
|
}
|
|
return col;
|
|
}
|
|
|
|
/*
|
|
* Find the longest visible line number. This is used for horizontal
|
|
* scrolling. If this is not possible (or not desired, by setting 'h' in
|
|
* "guioptions") then the current line number is returned.
|
|
*/
|
|
linenr_T
|
|
ui_find_longest_lnum(void)
|
|
{
|
|
linenr_T ret = 0;
|
|
|
|
// Calculate maximum for horizontal scrollbar. Check for reasonable
|
|
// line numbers, topline and botline can be invalid when displaying is
|
|
// postponed.
|
|
if (
|
|
# ifdef FEAT_GUI
|
|
(!gui.in_use || vim_strchr(p_go, GO_HORSCROLL) == NULL) &&
|
|
# endif
|
|
curwin->w_topline <= curwin->w_cursor.lnum
|
|
&& curwin->w_botline > curwin->w_cursor.lnum
|
|
&& curwin->w_botline <= curbuf->b_ml.ml_line_count + 1)
|
|
{
|
|
linenr_T lnum;
|
|
long n;
|
|
long max = 0;
|
|
|
|
// Use maximum of all visible lines. Remember the lnum of the
|
|
// longest line, closest to the cursor line. Used when scrolling
|
|
// below.
|
|
for (lnum = curwin->w_topline; lnum < curwin->w_botline; ++lnum)
|
|
{
|
|
n = scroll_line_len(lnum);
|
|
if (n > max)
|
|
{
|
|
max = n;
|
|
ret = lnum;
|
|
}
|
|
else if (n == max && abs((int)(lnum - curwin->w_cursor.lnum))
|
|
< abs((int)(ret - curwin->w_cursor.lnum)))
|
|
ret = lnum;
|
|
}
|
|
}
|
|
else
|
|
// Use cursor line only.
|
|
ret = curwin->w_cursor.lnum;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Called when focus changed. Used for the GUI or for systems where this can
|
|
* be done in the console (Win32).
|
|
*/
|
|
void
|
|
ui_focus_change(
|
|
int in_focus) // TRUE if focus gained.
|
|
{
|
|
static time_t last_time = (time_t)0;
|
|
int need_redraw = FALSE;
|
|
|
|
// When activated: Check if any file was modified outside of Vim.
|
|
// Only do this when not done within the last two seconds (could get
|
|
// several events in a row).
|
|
if (in_focus && last_time + 2 < time(NULL))
|
|
{
|
|
need_redraw = check_timestamps(
|
|
# ifdef FEAT_GUI
|
|
gui.in_use
|
|
# else
|
|
FALSE
|
|
# endif
|
|
);
|
|
last_time = time(NULL);
|
|
}
|
|
|
|
#ifdef FEAT_TERMINAL
|
|
term_focus_change(in_focus);
|
|
#endif
|
|
|
|
/*
|
|
* Fire the focus gained/lost autocommand.
|
|
*/
|
|
need_redraw |= apply_autocmds(in_focus ? EVENT_FOCUSGAINED
|
|
: EVENT_FOCUSLOST, NULL, NULL, FALSE, curbuf);
|
|
|
|
if (need_redraw)
|
|
redraw_after_callback(TRUE, TRUE);
|
|
|
|
// File may have been changed from 'readonly' to 'noreadonly'
|
|
if (need_maketitle)
|
|
maketitle();
|
|
}
|
|
|
|
#if defined(HAVE_INPUT_METHOD) || defined(PROTO)
|
|
/*
|
|
* Save current Input Method status to specified place.
|
|
*/
|
|
void
|
|
im_save_status(long *psave)
|
|
{
|
|
// Don't save when 'imdisable' is set or "xic" is NULL, IM is always
|
|
// disabled then (but might start later).
|
|
// Also don't save when inside a mapping, vgetc_im_active has not been set
|
|
// then.
|
|
// And don't save when the keys were stuffed (e.g., for a "." command).
|
|
// And don't save when the GUI is running but our window doesn't have
|
|
// input focus (e.g., when a find dialog is open).
|
|
if (!p_imdisable && KeyTyped && !KeyStuffed
|
|
# ifdef FEAT_XIM
|
|
&& xic != NULL
|
|
# endif
|
|
# ifdef FEAT_GUI
|
|
&& (!gui.in_use || gui.in_focus)
|
|
# endif
|
|
)
|
|
{
|
|
// Do save when IM is on, or IM is off and saved status is on.
|
|
if (vgetc_im_active)
|
|
*psave = B_IMODE_IM;
|
|
else if (*psave == B_IMODE_IM)
|
|
*psave = B_IMODE_NONE;
|
|
}
|
|
}
|
|
#endif
|