630 lines
17 KiB
C
630 lines
17 KiB
C
/* Copyright (C) 2020 June McEnroe <june@causal.agency>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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* Additional permission under GNU GPL version 3 section 7:
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*
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* If you modify this Program, or any covered work, by linking or
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* combining it with OpenSSL (or a modified version of that library),
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* containing parts covered by the terms of the OpenSSL License and the
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* original SSLeay license, the licensors of this Program grant you
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* additional permission to convey the resulting work. Corresponding
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* Source for a non-source form of such a combination shall include the
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* source code for the parts of OpenSSL used as well as that of the
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* covered work.
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*/
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#define _XOPEN_SOURCE_EXTENDED
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#include <assert.h>
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#include <curses.h>
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#include <err.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <termios.h>
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#include <unistd.h>
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#include <wchar.h>
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#include <wctype.h>
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#include "chat.h"
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#include "edit.h"
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#define ENUM_KEY \
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X(KeyCtrlLeft, "\33[1;5D", NULL) \
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X(KeyCtrlRight, "\33[1;5C", NULL) \
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X(KeyMeta0, "\0330", "\33)") \
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X(KeyMeta1, "\0331", "\33!") \
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X(KeyMeta2, "\0332", "\33@") \
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X(KeyMeta3, "\0333", "\33#") \
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X(KeyMeta4, "\0334", "\33$") \
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X(KeyMeta5, "\0335", "\33%") \
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X(KeyMeta6, "\0336", "\33^") \
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X(KeyMeta7, "\0337", "\33&") \
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X(KeyMeta8, "\0338", "\33*") \
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X(KeyMeta9, "\0339", "\33(") \
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X(KeyMetaA, "\33a", NULL) \
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X(KeyMetaB, "\33b", NULL) \
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X(KeyMetaD, "\33d", NULL) \
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X(KeyMetaF, "\33f", NULL) \
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X(KeyMetaL, "\33l", NULL) \
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X(KeyMetaM, "\33m", NULL) \
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X(KeyMetaN, "\33n", NULL) \
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X(KeyMetaP, "\33p", NULL) \
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X(KeyMetaQ, "\33q", NULL) \
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X(KeyMetaS, "\33s", NULL) \
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X(KeyMetaT, "\33t", NULL) \
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X(KeyMetaU, "\33u", NULL) \
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X(KeyMetaV, "\33v", NULL) \
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X(KeyMetaEnter, "\33\r", "\33\n") \
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X(KeyMetaGt, "\33>", "\33.") \
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X(KeyMetaLt, "\33<", "\33,") \
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X(KeyMetaEqual, "\33=", NULL) \
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X(KeyMetaMinus, "\33-", "\33_") \
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X(KeyMetaPlus, "\33+", NULL) \
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X(KeyMetaSlash, "\33/", "\33?") \
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X(KeyFocusIn, "\33[I", NULL) \
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X(KeyFocusOut, "\33[O", NULL) \
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X(KeyPasteOn, "\33[200~", NULL) \
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X(KeyPasteOff, "\33[201~", NULL) \
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X(KeyPasteManual, "\32p", "\32\20")
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enum {
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KeyMax = KEY_MAX,
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#define X(id, seq, alt) id,
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ENUM_KEY
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#undef X
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};
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static struct Edit cut;
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static struct Edit edits[IDCap];
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void inputInit(void) {
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for (size_t i = 0; i < ARRAY_LEN(edits); ++i) {
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edits[i].cut = &cut;
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}
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struct termios term;
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int error = tcgetattr(STDOUT_FILENO, &term);
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if (error) err(EX_OSERR, "tcgetattr");
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// Gain use of C-q, C-s, C-c, C-z, C-y, C-v, C-o.
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term.c_iflag &= ~IXON;
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term.c_cc[VINTR] = _POSIX_VDISABLE;
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term.c_cc[VSUSP] = _POSIX_VDISABLE;
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#ifdef VDSUSP
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term.c_cc[VDSUSP] = _POSIX_VDISABLE;
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#endif
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term.c_cc[VLNEXT] = _POSIX_VDISABLE;
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term.c_cc[VDISCARD] = _POSIX_VDISABLE;
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error = tcsetattr(STDOUT_FILENO, TCSANOW, &term);
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if (error) err(EX_OSERR, "tcsetattr");
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def_prog_mode();
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#define X(id, seq, alt) define_key(seq, id); if (alt) define_key(alt, id);
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ENUM_KEY
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#undef X
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keypad(uiInput, true);
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nodelay(uiInput, true);
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}
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static void inputAdd(struct Style reset, struct Style *style, const char *str) {
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while (*str) {
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const char *code = str;
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size_t len = styleParse(style, &str);
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wattr_set(uiInput, A_BOLD | A_REVERSE, 0, NULL);
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switch (*code) {
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break; case B: waddch(uiInput, 'B');
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break; case C: waddch(uiInput, 'C');
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break; case O: waddch(uiInput, 'O');
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break; case R: waddch(uiInput, 'R');
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break; case I: waddch(uiInput, 'I');
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break; case U: waddch(uiInput, 'U');
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break; case '\n': waddch(uiInput, 'N');
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}
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if (str - code > 1) waddnstr(uiInput, &code[1], str - &code[1]);
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if (str[0] == '\n') {
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*style = reset;
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str++;
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len--;
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}
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size_t nl = strcspn(str, "\n");
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if (nl < len) len = nl;
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wattr_set(uiInput, uiAttr(*style), uiPair(*style), NULL);
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waddnstr(uiInput, str, len);
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str += len;
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}
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}
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static char *inputStop(
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struct Style reset, struct Style *style,
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const char *str, char *stop
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) {
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char ch = *stop;
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*stop = '\0';
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inputAdd(reset, style, str);
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*stop = ch;
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return stop;
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}
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static size_t cap;
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static char *buf;
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void inputUpdate(void) {
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uint id = windowID();
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size_t pos = 0;
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const char *ptr = editString(&edits[id], &buf, &cap, &pos);
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if (!ptr) err(EX_OSERR, "editString");
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const char *prefix = "";
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const char *prompt = self.nick;
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const char *suffix = "";
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const char *skip = buf;
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struct Style stylePrompt = { .fg = self.color, .bg = Default };
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struct Style styleInput = StyleDefault;
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size_t split = commandWillSplit(id, buf);
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const char *privmsg = commandIsPrivmsg(id, buf);
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const char *notice = commandIsNotice(id, buf);
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const char *action = commandIsAction(id, buf);
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if (privmsg) {
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prefix = "<"; suffix = "> ";
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skip = privmsg;
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} else if (notice) {
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prefix = "-"; suffix = "- ";
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styleInput.fg = LightGray;
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skip = notice;
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} else if (action) {
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prefix = "* "; suffix = " ";
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stylePrompt.attr |= Italic;
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styleInput.attr |= Italic;
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skip = action;
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} else if (id == Debug && buf[0] != '/') {
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prompt = "<< ";
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stylePrompt.fg = Gray;
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} else {
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prompt = "";
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}
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if (skip > &buf[pos]) {
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prefix = prompt = suffix = "";
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skip = buf;
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}
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int y, x;
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wmove(uiInput, 0, 0);
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if (windowTimeEnable() && id != Network) {
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whline(uiInput, ' ', windowTime.width);
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wmove(uiInput, 0, windowTime.width);
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}
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wattr_set(uiInput, uiAttr(stylePrompt), uiPair(stylePrompt), NULL);
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waddstr(uiInput, prefix);
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waddstr(uiInput, prompt);
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waddstr(uiInput, suffix);
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getyx(uiInput, y, x);
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int posx;
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struct Style style = styleInput;
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inputStop(styleInput, &style, skip, &buf[pos]);
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getyx(uiInput, y, posx);
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wmove(uiInput, y, x);
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ptr = skip;
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style = styleInput;
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if (split) {
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ptr = inputStop(styleInput, &style, ptr, &buf[split]);
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style = styleInput;
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style.bg = Red;
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}
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inputAdd(styleInput, &style, ptr);
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wclrtoeol(uiInput);
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wmove(uiInput, y, posx);
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}
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bool inputPending(uint id) {
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return edits[id].len;
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}
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static const struct {
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const wchar_t *name;
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const wchar_t *string;
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} Macros[] = {
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{ L"\\banhammer", L"▬▬▬▬▬▬▬▋ Ò╭╮Ó" },
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{ L"\\bear", L"ʕっ•ᴥ•ʔっ" },
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{ L"\\blush", L"（˶′◡‵˶）" },
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{ L"\\com", L"\0038,4\2 ☭ " },
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{ L"\\cool", L"(⌐■_■)" },
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{ L"\\flip", L"(╯°□°）╯︵ ┻━┻" },
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{ L"\\gary", L"ᕕ( ᐛ )ᕗ" },
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{ L"\\hug", L"（っ・∀・）っ" },
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{ L"\\lenny", L"( ͡° ͜ʖ ͡°)" },
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{ L"\\look", L"ಠ_ಠ" },
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{ L"\\shrug", L"¯\\_(ツ)_/¯" },
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{ L"\\unflip", L"┬─┬ノ(º_ºノ)" },
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{ L"\\wave", L"ヾ(＾∇＾)" },
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};
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void inputCache(void) {
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char mbs[256];
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for (size_t i = 0; i < ARRAY_LEN(Macros); ++i) {
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size_t n = wcstombs(mbs, Macros[i].name, sizeof(mbs));
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assert(n != (size_t)-1);
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cacheInsert(false, None, mbs);
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}
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}
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static int macroExpand(struct Edit *e) {
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size_t macro = e->pos;
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while (macro && e->buf[macro] != L'\\') macro--;
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if (macro == e->pos) return 0;
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for (size_t i = 0; i < ARRAY_LEN(Macros); ++i) {
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if (wcslen(Macros[i].name) != e->pos - macro) continue;
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if (wcsncmp(Macros[i].name, &e->buf[macro], e->pos - macro)) continue;
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if (wcstombs(NULL, Macros[i].string, 0) == (size_t)-1) continue;
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size_t expand = wcslen(Macros[i].string);
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int error = 0
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|| editDelete(e, false, macro, e->pos - macro)
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|| editReserve(e, macro, expand);
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if (error) return error;
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wcsncpy(&e->buf[macro], Macros[i].string, expand);
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e->pos = macro + expand;
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break;
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}
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return 0;
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}
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static struct {
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uint id;
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char *pre;
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size_t pos;
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size_t len;
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bool suffix;
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struct Cursor curs;
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} tab;
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static void tabAccept(void) {
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cacheAccept(&tab.curs);
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tab.len = 0;
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}
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static void tabReject(void) {
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cacheReject(&tab.curs);
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tab.len = 0;
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}
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static int tabComplete(struct Edit *e, uint id) {
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if (tab.len && id != tab.id) {
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tabAccept();
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}
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if (!tab.len) {
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tab.id = id;
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tab.pos = e->pos;
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while (tab.pos && !iswspace(e->buf[tab.pos-1])) tab.pos--;
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tab.len = e->pos - tab.pos;
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if (!tab.len) return 0;
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size_t cap = tab.len * MB_CUR_MAX + 1;
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char *buf = realloc(tab.pre, cap);
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if (!buf) return -1;
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tab.pre = buf;
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const wchar_t *ptr = &e->buf[tab.pos];
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size_t n = wcsnrtombs(tab.pre, &ptr, tab.len, cap-1, NULL);
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if (n == (size_t)-1) return -1;
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tab.pre[n] = '\0';
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tab.suffix = true;
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}
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const char *comp = cacheComplete(&tab.curs, id, tab.pre);
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if (!comp) {
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comp = cacheComplete(&tab.curs, id, tab.pre);
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tab.suffix ^= true;
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}
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if (!comp) {
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tab.len = 0;
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return 0;
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}
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size_t cap = strlen(comp) + 1;
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wchar_t *wcs = malloc(sizeof(*wcs) * cap);
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if (!wcs) return -1;
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size_t n = mbstowcs(wcs, comp, cap);
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assert(n != (size_t)-1);
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bool colon = (tab.len >= 2 && e->buf[tab.pos + tab.len - 2] == L':');
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int error = editDelete(e, false, tab.pos, tab.len);
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if (error) goto fail;
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tab.len = n;
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if (wcs[0] == L'\\' || wcschr(wcs, L' ')) {
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error = editReserve(e, tab.pos, tab.len);
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if (error) goto fail;
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} else if (wcs[0] != L'/' && tab.suffix && (!tab.pos || colon)) {
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tab.len += 2;
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error = editReserve(e, tab.pos, tab.len);
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if (error) goto fail;
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e->buf[tab.pos + n + 0] = L':';
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e->buf[tab.pos + n + 1] = L' ';
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} else if (tab.suffix && tab.pos >= 2 && e->buf[tab.pos - 2] == L':') {
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tab.len += 2;
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error = editReserve(e, tab.pos, tab.len);
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if (error) goto fail;
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e->buf[tab.pos - 2] = L',';
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e->buf[tab.pos + n + 0] = L':';
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e->buf[tab.pos + n + 1] = L' ';
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} else {
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tab.len++;
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error = editReserve(e, tab.pos, tab.len);
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if (error) goto fail;
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if (!tab.suffix && tab.pos >= 2 && e->buf[tab.pos - 2] == L',') {
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e->buf[tab.pos - 2] = L':';
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}
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e->buf[tab.pos + n] = L' ';
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}
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wmemcpy(&e->buf[tab.pos], wcs, n);
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e->pos = tab.pos + tab.len;
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free(wcs);
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return 0;
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fail:
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free(wcs);
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return -1;
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}
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static void inputEnter(void) {
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uint id = windowID();
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char *cmd = editString(&edits[id], &buf, &cap, NULL);
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if (!cmd) err(EX_OSERR, "editString");
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tabAccept();
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editFn(&edits[id], EditClear);
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command(id, cmd);
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}
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static void keyCode(int code) {
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int error = 0;
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struct Edit *edit = &edits[windowID()];
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switch (code) {
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break; case KEY_RESIZE: uiResize();
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break; case KeyFocusIn: windowUnmark();
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break; case KeyFocusOut: windowMark();
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break; case KeyMetaEnter: error = editInsert(edit, L'\n');
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break; case KeyMetaEqual: windowToggleMute();
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break; case KeyMetaMinus: windowToggleThresh(-1);
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break; case KeyMetaPlus: windowToggleThresh(+1);
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break; case KeyMetaSlash: windowSwap();
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break; case KeyMetaGt: windowScroll(ScrollAll, -1);
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break; case KeyMetaLt: windowScroll(ScrollAll, +1);
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break; case KeyMeta0 ... KeyMeta9: windowShow(code - KeyMeta0);
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break; case KeyMetaA: windowAuto();
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break; case KeyMetaB: error = editFn(edit, EditPrevWord);
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break; case KeyMetaD: error = editFn(edit, EditDeleteNextWord);
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break; case KeyMetaF: error = editFn(edit, EditNextWord);
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break; case KeyMetaL: windowBare();
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break; case KeyMetaM: uiWrite(windowID(), Warm, NULL, "");
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break; case KeyMetaN: windowScroll(ScrollHot, +1);
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break; case KeyMetaP: windowScroll(ScrollHot, -1);
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break; case KeyMetaQ: error = editFn(edit, EditCollapse);
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break; case KeyMetaS: uiSpoilerReveal ^= true; windowUpdate();
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break; case KeyMetaT: windowToggleTime();
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break; case KeyMetaU: windowScroll(ScrollUnread, 0);
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break; case KeyMetaV: windowScroll(ScrollPage, +1);
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break; case KeyCtrlLeft: error = editFn(edit, EditPrevWord);
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break; case KeyCtrlRight: error = editFn(edit, EditNextWord);
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break; case KEY_BACKSPACE: error = editFn(edit, EditDeletePrev);
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break; case KEY_DC: error = editFn(edit, EditDeleteNext);
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break; case KEY_DOWN: windowScroll(ScrollOne, -1);
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break; case KEY_END: error = editFn(edit, EditTail);
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break; case KEY_ENTER: inputEnter();
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break; case KEY_HOME: error = editFn(edit, EditHead);
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break; case KEY_LEFT: error = editFn(edit, EditPrev);
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break; case KEY_NPAGE: windowScroll(ScrollPage, -1);
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break; case KEY_PPAGE: windowScroll(ScrollPage, +1);
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break; case KEY_RIGHT: error = editFn(edit, EditNext);
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break; case KEY_SEND: windowScroll(ScrollAll, -1);
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break; case KEY_SHOME: windowScroll(ScrollAll, +1);
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break; case KEY_UP: windowScroll(ScrollOne, +1);
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}
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if (error) err(EX_OSERR, "editFn");
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}
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static void keyCtrl(wchar_t ch) {
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int error = 0;
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struct Edit *edit = &edits[windowID()];
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switch (ch ^ L'@') {
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break; case L'?': error = editFn(edit, EditDeletePrev);
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break; case L'A': error = editFn(edit, EditHead);
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break; case L'B': error = editFn(edit, EditPrev);
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||
/* break; case L'C': raise(SIGINT); */
|
||
break; case L'D': error = editFn(edit, EditDeleteNext);
|
||
break; case L'E': error = editFn(edit, EditTail);
|
||
break; case L'F': error = editFn(edit, EditNext);
|
||
break; case L'H': error = editFn(edit, EditDeletePrev);
|
||
break; case L'I': error = tabComplete(edit, windowID());
|
||
break; case L'J': inputEnter();
|
||
break; case L'K': error = editFn(edit, EditDeleteTail);
|
||
break; case L'L': clearok(curscr, true); wrefresh(curscr);
|
||
break; case L'N': windowShow(windowNum() + 1);
|
||
break; case L'P': windowShow(windowNum() - 1);
|
||
break; case L'R': windowSearch(editString(edit, &buf, &cap, NULL), -1);
|
||
break; case L'S': windowSearch(editString(edit, &buf, &cap, NULL), +1);
|
||
break; case L'T': error = editFn(edit, EditTranspose);
|
||
break; case L'U': error = editFn(edit, EditDeleteHead);
|
||
break; case L'V': windowScroll(ScrollPage, -1);
|
||
break; case L'W': error = editFn(edit, EditDeletePrevWord);
|
||
break; case L'X': error = macroExpand(edit); tabAccept();
|
||
break; case L'Y': error = editFn(edit, EditPaste);
|
||
}
|
||
if (error) err(EX_OSERR, "editFn");
|
||
}
|
||
|
||
static void keyStyle(wchar_t ch) {
|
||
if (iswcntrl(ch)) ch = towlower(ch ^ L'@');
|
||
char buf[8] = {0};
|
||
enum Color color = Default;
|
||
switch (ch) {
|
||
break; case L'A': color = Gray;
|
||
break; case L'B': color = Blue;
|
||
break; case L'C': color = Cyan;
|
||
break; case L'G': color = Green;
|
||
break; case L'K': color = Black;
|
||
break; case L'M': color = Magenta;
|
||
break; case L'N': color = Brown;
|
||
break; case L'O': color = Orange;
|
||
break; case L'P': color = Pink;
|
||
break; case L'R': color = Red;
|
||
break; case L'W': color = White;
|
||
break; case L'Y': color = Yellow;
|
||
break; case L'b': buf[0] = B;
|
||
break; case L'c': buf[0] = C;
|
||
break; case L'i': buf[0] = I;
|
||
break; case L'o': buf[0] = O;
|
||
break; case L'r': buf[0] = R;
|
||
break; case L's': {
|
||
snprintf(buf, sizeof(buf), "%c%02d,%02d", C, Black, Black);
|
||
}
|
||
break; case L'u': buf[0] = U;
|
||
}
|
||
if (color != Default) {
|
||
snprintf(buf, sizeof(buf), "%c%02d", C, color);
|
||
}
|
||
struct Edit *edit = &edits[windowID()];
|
||
for (char *ch = buf; *ch; ++ch) {
|
||
int error = editInsert(edit, *ch);
|
||
if (error) err(EX_OSERR, "editInsert");
|
||
}
|
||
}
|
||
|
||
static bool waiting;
|
||
|
||
void inputWait(void) {
|
||
waiting = true;
|
||
}
|
||
|
||
void inputRead(void) {
|
||
if (isendwin()) {
|
||
if (waiting) {
|
||
uiShow();
|
||
flushinp();
|
||
waiting = false;
|
||
} else {
|
||
return;
|
||
}
|
||
}
|
||
|
||
wint_t ch;
|
||
static bool paste, style, literal;
|
||
for (int ret; ERR != (ret = wget_wch(uiInput, &ch));) {
|
||
bool tabbing = false;
|
||
size_t pos = edits[tab.id].pos;
|
||
bool spr = uiSpoilerReveal;
|
||
|
||
if (ret == KEY_CODE_YES && ch == KeyPasteOn) {
|
||
paste = true;
|
||
} else if (ret == KEY_CODE_YES && ch == KeyPasteOff) {
|
||
paste = false;
|
||
} else if (ret == KEY_CODE_YES && ch == KeyPasteManual) {
|
||
paste ^= true;
|
||
} else if (paste || literal) {
|
||
int error = editInsert(&edits[windowID()], ch);
|
||
if (error) err(EX_OSERR, "editInsert");
|
||
} else if (ret == KEY_CODE_YES) {
|
||
keyCode(ch);
|
||
} else if (ch == (L'Z' ^ L'@')) {
|
||
style = true;
|
||
continue;
|
||
} else if (style && ch == (L'V' ^ L'@')) {
|
||
literal = true;
|
||
continue;
|
||
} else if (style) {
|
||
keyStyle(ch);
|
||
} else if (iswcntrl(ch)) {
|
||
tabbing = (ch == (L'I' ^ L'@'));
|
||
keyCtrl(ch);
|
||
} else {
|
||
int error = editInsert(&edits[windowID()], ch);
|
||
if (error) err(EX_OSERR, "editInsert");
|
||
}
|
||
style = false;
|
||
literal = false;
|
||
|
||
if (!tabbing) {
|
||
if (edits[tab.id].pos > pos) {
|
||
tabAccept();
|
||
} else if (edits[tab.id].pos < pos) {
|
||
tabReject();
|
||
}
|
||
}
|
||
|
||
if (spr) {
|
||
uiSpoilerReveal = false;
|
||
windowUpdate();
|
||
}
|
||
}
|
||
inputUpdate();
|
||
}
|
||
|
||
static int writeString(FILE *file, const char *str) {
|
||
return (fwrite(str, strlen(str) + 1, 1, file) ? 0 : -1);
|
||
}
|
||
|
||
int inputSave(FILE *file) {
|
||
int error;
|
||
for (uint id = 0; id < IDCap; ++id) {
|
||
if (!edits[id].len) continue;
|
||
char *ptr = editString(&edits[id], &buf, &cap, NULL);
|
||
if (!ptr) return -1;
|
||
error = 0
|
||
|| writeString(file, idNames[id])
|
||
|| writeString(file, ptr);
|
||
if (error) return error;
|
||
}
|
||
return writeString(file, "");
|
||
}
|
||
|
||
static ssize_t readString(FILE *file, char **buf, size_t *cap) {
|
||
ssize_t len = getdelim(buf, cap, '\0', file);
|
||
if (len < 0 && !feof(file)) err(EX_IOERR, "getdelim");
|
||
return len;
|
||
}
|
||
|
||
void inputLoad(FILE *file, size_t version) {
|
||
if (version < 8) return;
|
||
while (0 < readString(file, &buf, &cap) && buf[0]) {
|
||
uint id = idFor(buf);
|
||
readString(file, &buf, &cap);
|
||
size_t max = strlen(buf);
|
||
int error = editReserve(&edits[id], 0, max);
|
||
if (error) err(EX_OSERR, "editReserve");
|
||
size_t len = mbstowcs(edits[id].buf, buf, max);
|
||
assert(len != (size_t)-1);
|
||
edits[id].len = len;
|
||
edits[id].pos = len;
|
||
}
|
||
}
|