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-rw-r--r--ui.c772
1 files changed, 257 insertions, 515 deletions
diff --git a/ui.c b/ui.c
index 9cf21d3..079ee19 100644
--- a/ui.c
+++ b/ui.c
@@ -1,615 +1,357 @@
-/* Copyright (C) 2018, 2019  C. McEnroe <june@causal.agency>
+/* Copyright (C) 2020  June McEnroe <june@causal.agency>
  *
  * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * Additional permission under GNU GPL version 3 section 7:
+ *
+ * If you modify this Program, or any covered work, by linking or
+ * combining it with OpenSSL (or a modified version of that library),
+ * containing parts covered by the terms of the OpenSSL License and the
+ * original SSLeay license, the licensors of this Program grant you
+ * additional permission to convey the resulting work. Corresponding
+ * Source for a non-source form of such a combination shall include the
+ * source code for the parts of OpenSSL used as well as that of the
+ * covered work.
  */
 
 #define _XOPEN_SOURCE_EXTENDED
 
+#include <assert.h>
 #include <curses.h>
 #include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
 #include <stdarg.h>
 #include <stdbool.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/file.h>
 #include <sysexits.h>
-#include <wchar.h>
-#include <wctype.h>
+#include <term.h>
+#include <time.h>
+#include <unistd.h>
 
-#ifndef A_ITALIC
-#define A_ITALIC A_UNDERLINE
+#ifdef __FreeBSD__
+#include <capsicum_helpers.h>
 #endif
 
 #include "chat.h"
-#undef uiFmt
-
-#define CTRL(ch) ((ch) & 037)
-enum { Esc = L'\33', Del = L'\177' };
-
-static const int LogLines = 512;
-
-static int lastLine(void) {
-	return LINES - 1;
-}
-static int lastCol(void) {
-	return COLS - 1;
-}
-static int logHeight(void) {
-	return LINES - 2;
-}
-
-struct Window {
-	struct Tag tag;
-	WINDOW *log;
-	bool hot;
-	bool mark;
-	int scroll;
-	uint unread;
-	struct Window *prev;
-	struct Window *next;
-};
 
-static struct {
-	struct Window *active;
-	struct Window *other;
-	struct Window *head;
-	struct Window *tail;
-	struct Window *tag[TagsLen];
-} windows;
-
-static void windowAppend(struct Window *win) {
-	if (windows.tail) windows.tail->next = win;
-	win->prev = windows.tail;
-	win->next = NULL;
-	windows.tail = win;
-	if (!windows.head) windows.head = win;
-	windows.tag[win->tag.id] = win;
-}
-
-static void windowInsert(struct Window *win, struct Window *next) {
-	win->prev = next->prev;
-	win->next = next;
-	if (win->prev) win->prev->next = win;
-	win->next->prev = win;
-	if (!win->prev) windows.head = win;
-	windows.tag[win->tag.id] = win;
-}
+#define BOTTOM (LINES - 1)
+#define RIGHT (COLS - 1)
+#define MAIN_LINES (LINES - StatusLines - InputLines)
 
-static void windowRemove(struct Window *win) {
-	windows.tag[win->tag.id] = NULL;
-	if (win->prev) win->prev->next = win->next;
-	if (win->next) win->next->prev = win->prev;
-	if (windows.head == win) windows.head = win->next;
-	if (windows.tail == win) windows.tail = win->prev;
-}
-
-static struct Window *windowFor(struct Tag tag) {
-	struct Window *win = windows.tag[tag.id];
-	if (win) {
-		win->tag = tag;
-		return win;
-	}
+WINDOW *uiStatus;
+WINDOW *uiMain;
+WINDOW *uiInput;
 
-	win = calloc(1, sizeof(*win));
-	if (!win) err(EX_OSERR, "calloc");
+static short colorPairs;
 
-	win->tag = tag;
-	win->mark = true;
-	win->scroll = LogLines;
-
-	win->log = newpad(LogLines, COLS);
-	wsetscrreg(win->log, 0, LogLines - 1);
-	scrollok(win->log, true);
-	wmove(win->log, LogLines - 1, 0);
-
-	windowAppend(win);
-	return win;
-}
-
-static void windowResize(struct Window *win) {
-	wresize(win->log, LogLines, COLS);
-	wmove(win->log, LogLines - 1, lastCol());
-}
-
-static void windowMark(struct Window *win) {
-	win->mark = true;
-}
-static void windowUnmark(struct Window *win) {
-	win->mark = false;
-	win->unread = 0;
-	win->hot = false;
-}
-
-static void windowShow(struct Window *win) {
-	if (windows.active) windowMark(windows.active);
-	if (win) {
-		touchwin(win->log);
-		windowUnmark(win);
+static void colorInit(void) {
+	start_color();
+	use_default_colors();
+	if (!COLORS) return;
+	for (short pair = 0; pair < 16; ++pair) {
+		init_pair(1 + pair, pair % COLORS, -1);
 	}
-	windows.other = windows.active;
-	windows.active = win;
+	colorPairs = 17;
 }
 
-static void windowClose(struct Window *win) {
-	if (windows.active == win) windowShow(win->next ? win->next : win->prev);
-	if (windows.other == win) windows.other = NULL;
-	windowRemove(win);
-	delwin(win->log);
-	free(win);
+static attr_t colorAttr(short fg) {
+	if (!COLORS) return (fg > 0 ? A_BOLD : A_NORMAL);
+	if (fg != COLOR_BLACK && fg % COLORS == COLOR_BLACK) return A_BOLD;
+	if (COLORS > 8) return A_NORMAL;
+	return (fg / COLORS & 1 ? A_BOLD : A_NORMAL);
 }
 
-static void windowScroll(struct Window *win, int lines) {
-	if (lines < 0) {
-		if (win->scroll == logHeight()) return;
-		if (win->scroll == LogLines) windowMark(win);
-		win->scroll = MAX(win->scroll + lines, logHeight());
-	} else {
-		if (win->scroll == LogLines) return;
-		win->scroll = MIN(win->scroll + lines, LogLines);
-		if (win->scroll == LogLines) windowUnmark(win);
+static short colorPair(short fg, short bg) {
+	if (!COLORS) return 0;
+	fg %= COLORS;
+	bg %= COLORS;
+	if (bg == -1 && fg < 16) return 1 + fg;
+	for (short pair = 17; pair < colorPairs; ++pair) {
+		short f, b;
+		pair_content(pair, &f, &b);
+		if (f == fg && b == bg) return pair;
 	}
+	init_pair(colorPairs, fg, bg);
+	return colorPairs++;
 }
 
-static void colorInit(void) {
-	start_color();
-	use_default_colors();
-	if (COLORS < 16) {
-		for (short pair = 0; pair < 0100; ++pair) {
-			if (pair < 010) {
-				init_pair(1 + pair, pair, -1);
-			} else {
-				init_pair(1 + pair, pair & 007, (pair & 070) >> 3);
-			}
-		}
-	} else {
-		for (short pair = 0; pair < 0x100; ++pair) {
-			if (pair < 0x10) {
-				init_pair(1 + pair, pair, -1);
-			} else {
-				init_pair(1 + pair, pair & 0x0F, (pair & 0xF0) >> 4);
-			}
-		}
-	}
-}
+// XXX: Assuming terminals will be fine with these even if they're unsupported,
+// since they're "private" modes.
+static const char *FocusMode[2] = { "\33[?1004l", "\33[?1004h" };
+static const char *PasteMode[2] = { "\33[?2004l", "\33[?2004h" };
 
-static attr_t colorAttr(short color) {
-	if (color < 0) return A_NORMAL;
-	if (COLORS < 16 && (color & 0x08)) return A_BOLD;
-	return A_NORMAL;
-}
-static short colorPair(short color) {
-	if (color < 0) return 0;
-	if (COLORS < 16) return 1 + ((color & 0x70) >> 1 | (color & 0x07));
-	return 1 + color;
+static void errExit(void) {
+	putp(FocusMode[false]);
+	putp(PasteMode[false]);
+	reset_shell_mode();
 }
 
-static struct {
-	bool hide;
-	WINDOW *status;
-	WINDOW *input;
-} ui;
-
 void uiInit(void) {
 	initscr();
 	cbreak();
 	noecho();
-	termInit();
-	termNoFlow();
-	def_prog_mode();
 	colorInit();
-	ui.status = newwin(1, COLS, 0, 0);
-	ui.input = newpad(1, 512);
-	keypad(ui.input, true);
-	nodelay(ui.input, true);
-	uiShow();
-}
+	atexit(errExit);
 
-static void uiResize(void) {
-	wresize(ui.status, 1, COLS);
-	for (struct Window *win = windows.head; win; win = win->next) {
-		windowResize(win);
+#ifndef A_ITALIC
+#define A_ITALIC A_BLINK
+	// Force ncurses to use individual enter_attr_mode strings:
+	set_attributes = NULL;
+	enter_blink_mode = enter_italics_mode;
+#endif
+
+	if (!to_status_line && !strncmp(termname(), "xterm", 5)) {
+		to_status_line = "\33]2;";
+		from_status_line = "\7";
 	}
-}
 
-void uiShow(void) {
-	ui.hide = false;
-	termMode(TermFocus, true);
-	uiDraw();
-}
-void uiHide(void) {
-	ui.hide = true;
-	termMode(TermFocus, false);
-	endwin();
-}
+	uiStatus = newwin(StatusLines, COLS, 0, 0);
+	if (!uiStatus) err(EX_OSERR, "newwin");
 
-void uiExit(int status) {
-	uiHide();
-	printf(
-		"This program is AGPLv3 Free Software!\n"
-		"Code is available from <" SOURCE_URL ">.\n"
-	);
-	exit(status);
+	uiMain = newwin(MAIN_LINES, COLS, StatusLines, 0);
+	if (!uiMain) err(EX_OSERR, "newwin");
+
+	uiInput = newpad(InputLines, InputCols);
+	if (!uiInput) err(EX_OSERR, "newpad");
+
+	windowInit();
+	uiShow();
 }
 
-static int _;
+static bool hidden = true;
+
+char uiTitle[TitleCap];
+static char prevTitle[TitleCap];
+
 void uiDraw(void) {
-	if (ui.hide) return;
-	wnoutrefresh(ui.status);
-	if (windows.active) {
-		pnoutrefresh(
-			windows.active->log,
-			windows.active->scroll - logHeight(), 0,
-			1, 0,
-			lastLine() - 1, lastCol()
-		);
-	}
-	int x;
-	getyx(ui.input, _, x);
+	if (hidden) return;
+	wnoutrefresh(uiStatus);
+	wnoutrefresh(uiMain);
+	int y, x;
+	getyx(uiInput, y, x);
 	pnoutrefresh(
-		ui.input,
-		0, MAX(0, x - lastCol() + 3),
-		lastLine(), 0,
-		lastLine(), lastCol()
+		uiInput,
+		0, (x + 1 > RIGHT ? x + 1 - RIGHT : 0),
+		LINES - InputLines, 0,
+		BOTTOM, RIGHT
 	);
+	(void)y;
 	doupdate();
-}
 
-static const short Colors[] = {
-	[IRCWhite]      = 8 + COLOR_WHITE,
-	[IRCBlack]      = 0 + COLOR_BLACK,
-	[IRCBlue]       = 0 + COLOR_BLUE,
-	[IRCGreen]      = 0 + COLOR_GREEN,
-	[IRCRed]        = 8 + COLOR_RED,
-	[IRCBrown]      = 0 + COLOR_RED,
-	[IRCMagenta]    = 0 + COLOR_MAGENTA,
-	[IRCOrange]     = 0 + COLOR_YELLOW,
-	[IRCYellow]     = 8 + COLOR_YELLOW,
-	[IRCLightGreen] = 8 + COLOR_GREEN,
-	[IRCCyan]       = 0 + COLOR_CYAN,
-	[IRCLightCyan]  = 8 + COLOR_CYAN,
-	[IRCLightBlue]  = 8 + COLOR_BLUE,
-	[IRCPink]       = 8 + COLOR_MAGENTA,
-	[IRCGray]       = 8 + COLOR_BLACK,
-	[IRCLightGray]  = 0 + COLOR_WHITE,
+	if (!to_status_line) return;
+	if (!strcmp(uiTitle, prevTitle)) return;
+	strcpy(prevTitle, uiTitle);
+	putp(tparm(to_status_line, 0));
+	putp(uiTitle);
+	putp(from_status_line);
+	fflush(stdout);
+}
+
+static const short Colors[ColorCap] = {
+	[Default]    = -1,
+	[White]      = 8 + COLOR_WHITE,
+	[Black]      = 0 + COLOR_BLACK,
+	[Blue]       = 0 + COLOR_BLUE,
+	[Green]      = 0 + COLOR_GREEN,
+	[Red]        = 8 + COLOR_RED,
+	[Brown]      = 0 + COLOR_RED,
+	[Magenta]    = 0 + COLOR_MAGENTA,
+	[Orange]     = 0 + COLOR_YELLOW,
+	[Yellow]     = 8 + COLOR_YELLOW,
+	[LightGreen] = 8 + COLOR_GREEN,
+	[Cyan]       = 0 + COLOR_CYAN,
+	[LightCyan]  = 8 + COLOR_CYAN,
+	[LightBlue]  = 8 + COLOR_BLUE,
+	[Pink]       = 8 + COLOR_MAGENTA,
+	[Gray]       = 8 + COLOR_BLACK,
+	[LightGray]  = 0 + COLOR_WHITE,
+	52, 94, 100, 58, 22, 29, 23, 24, 17, 54, 53, 89,
+	88, 130, 142, 64, 28, 35, 30, 25, 18, 91, 90, 125,
+	124, 166, 184, 106, 34, 49, 37, 33, 19, 129, 127, 161,
+	196, 208, 226, 154, 46, 86, 51, 75, 21, 171, 201, 198,
+	203, 215, 227, 191, 83, 122, 87, 111, 63, 177, 207, 205,
+	217, 223, 229, 193, 157, 158, 159, 153, 147, 183, 219, 212,
+	16, 233, 235, 237, 239, 241, 244, 247, 250, 254, 231,
 };
 
-static void addFormat(WINDOW *win, const struct Format *format) {
+uint uiAttr(struct Style style) {
 	attr_t attr = A_NORMAL;
-	if (format->bold)      attr |= A_BOLD;
-	if (format->italic)    attr |= A_ITALIC;
-	if (format->underline) attr |= A_UNDERLINE;
-	if (format->reverse)   attr |= A_REVERSE;
-
-	short color = -1;
-	if (format->fg != IRCDefault) color = Colors[format->fg];
-	if (format->bg != IRCDefault) color |= Colors[format->bg] << 4;
-
-	wattr_set(win, attr | colorAttr(color), colorPair(color), NULL);
-	waddnwstr(win, format->str, format->len);
-}
-
-static int printWidth(const wchar_t *str, size_t len) {
-	int width = 0;
-	for (size_t i = 0; i < len; ++i) {
-		if (iswprint(str[i])) width += wcwidth(str[i]);
-	}
-	return width;
+	if (style.attr & Bold) attr |= A_BOLD;
+	if (style.attr & Reverse) attr |= A_REVERSE;
+	if (style.attr & Italic) attr |= A_ITALIC;
+	if (style.attr & Underline) attr |= A_UNDERLINE;
+	return attr | colorAttr(Colors[style.fg]);
 }
 
-static int addWrap(WINDOW *win, const wchar_t *str) {
-	int lines = 0;
-	struct Format format = { .str = str };
-	formatReset(&format);
-
-	while (formatParse(&format, NULL)) {
-		size_t word = 1 + wcscspn(&format.str[1], L" ");
-		if (word < format.len) format.len = word;
-
-		int x, xMax;
-		getyx(win, _, x);
-		getmaxyx(win, _, xMax);
-		if (xMax - x - 1 < printWidth(format.str, word)) {
-			if (format.str[0] == L' ') {
-				format.str++;
-				format.len--;
-			}
-			waddch(win, '\n');
-			lines++;
-		}
-		addFormat(win, &format);
-	}
-	return lines;
-}
-
-static void title(const struct Window *win) {
-	int unread;
-	char *str;
-	int len = asprintf(&str, "%s%n (%u)", win->tag.name, &unread, win->unread);
-	if (len < 0) err(EX_OSERR, "asprintf");
-	if (!win->unread) str[unread] = '\0';
-	termTitle(str);
-	free(str);
-}
+bool uiSpoilerReveal;
 
-static void uiStatus(void) {
-	wmove(ui.status, 0, 0);
-	int num = 0;
-	for (const struct Window *win = windows.head; win; win = win->next, ++num) {
-		if (!win->unread && windows.active != win) continue;
-		if (windows.active == win) title(win);
-		int unread;
-		wchar_t *str;
-		int len = aswprintf(
-			&str, L"%c\3%d %d %s %n(\3%02d%u\3%d) ",
-			(windows.active == win ? IRCReverse : IRCReset), colorFor(win->tag),
-			num, win->tag.name,
-			&unread, (win->hot ? IRCWhite : colorFor(win->tag)), win->unread,
-			colorFor(win->tag)
-		);
-		if (len < 0) err(EX_OSERR, "aswprintf");
-		if (!win->unread) str[unread] = L'\0';
-		addWrap(ui.status, str);
-		free(str);
+short uiPair(struct Style style) {
+	if (uiSpoilerReveal && style.fg == style.bg) {
+		return colorPair(Colors[Default], Colors[style.bg]);
 	}
-	wclrtoeol(ui.status);
+	return colorPair(Colors[style.fg], Colors[style.bg]);
 }
 
-static void uiShowWindow(struct Window *win) {
-	windowShow(win);
-	uiStatus();
-	uiPrompt(false);
+void uiShow(void) {
+	if (!hidden) return;
+	prevTitle[0] = '\0';
+	putp(FocusMode[true]);
+	putp(PasteMode[true]);
+	fflush(stdout);
+	hidden = false;
+	windowUnmark();
 }
 
-void uiShowTag(struct Tag tag) {
-	uiShowWindow(windowFor(tag));
+void uiHide(void) {
+	if (hidden) return;
+	windowMark();
+	hidden = true;
+	putp(FocusMode[false]);
+	putp(PasteMode[false]);
+	endwin();
 }
 
-static void uiShowAuto(void) {
-	struct Window *unread = NULL;
-	struct Window *hot;
-	for (hot = windows.head; hot; hot = hot->next) {
-		if (hot->hot) break;
-		if (!unread && hot->unread) unread = hot;
-	}
-	if (!hot && !unread) return;
-	uiShowWindow(hot ? hot : unread);
-}
+struct Util uiNotifyUtil;
+static void notify(uint id, const char *str) {
+	if (self.restricted) return;
+	if (!uiNotifyUtil.argc) return;
 
-void uiShowNum(int num, bool relative) {
-	struct Window *win = (relative ? windows.active : windows.head);
-	if (num < 0) {
-		for (; win; win = win->prev) if (!num++) break;
-	} else {
-		for (; win; win = win->next) if (!num--) break;
-	}
-	if (win) uiShowWindow(win);
-}
+	char buf[1024];
+	styleStrip(buf, sizeof(buf), str);
 
-void uiMoveTag(struct Tag tag, int num, bool relative) {
-	struct Window *win = windowFor(tag);
-	windowRemove(win);
-	struct Window *ins = (relative ? win : windows.head);
-	if (num < 0) {
-		for (; ins; ins = ins->prev) if (!num++) break;
-	} else {
-		if (relative) ins = ins->next;
-		for (; ins; ins = ins->next) if (!num--) break;
-	}
-	ins ? windowInsert(win, ins) : windowAppend(win);
-	uiStatus();
-}
+	struct Util util = uiNotifyUtil;
+	utilPush(&util, idNames[id]);
+	utilPush(&util, buf);
 
-void uiCloseTag(struct Tag tag) {
-	windowClose(windowFor(tag));
-	uiStatus();
-	uiPrompt(false);
-}
+	pid_t pid = fork();
+	if (pid < 0) err(EX_OSERR, "fork");
+	if (pid) return;
 
-static void notify(struct Tag tag, const wchar_t *str) {
-	beep();
-	if (!self.notify) return;
-
-	size_t len = 0;
-	char buf[256];
-	struct Format format = { .str = str };
-	formatReset(&format);
-	while (formatParse(&format, NULL)) {
-		int n = snprintf(
-			&buf[len], sizeof(buf) - len,
-			"%.*ls", (int)format.len, format.str
-		);
-		if (n < 0) err(EX_OSERR, "snprintf");
-		len += n;
-		if (len >= sizeof(buf)) break;
-	}
-	eventPipe((const char *[]) { "notify-send", tag.name, buf, NULL });
+	setsid();
+	close(STDIN_FILENO);
+	dup2(utilPipe[1], STDOUT_FILENO);
+	dup2(utilPipe[1], STDERR_FILENO);
+	execvp(util.argv[0], (char *const *)util.argv);
+	warn("%s", util.argv[0]);
+	_exit(EX_CONFIG);
 }
 
-void uiLog(struct Tag tag, enum UIHeat heat, const wchar_t *str) {
-	struct Window *win = windowFor(tag);
-	int lines = 1;
-	waddch(win->log, '\n');
-	if (win->mark && heat > UICold) {
-		if (!win->unread++) {
-			lines++;
-			waddch(win->log, '\n');
-		}
-		if (heat > UIWarm) {
-			win->hot = true;
-			notify(tag, str);
-		}
-		uiStatus();
+void uiWrite(uint id, enum Heat heat, const time_t *src, const char *str) {
+	bool note = windowWrite(id, heat, src, str);
+	if (note) {
+		beep();
+		notify(id, str);
 	}
-	lines += addWrap(win->log, str);
-	if (win->scroll != LogLines) win->scroll -= lines;
 }
 
-void uiFmt(struct Tag tag, enum UIHeat heat, const wchar_t *format, ...) {
-	wchar_t *str;
+void uiFormat(
+	uint id, enum Heat heat, const time_t *time, const char *format, ...
+) {
+	char buf[1024];
 	va_list ap;
 	va_start(ap, format);
-	vaswprintf(&str, format, ap);
+	int len = vsnprintf(buf, sizeof(buf), format, ap);
 	va_end(ap);
-	if (!str) err(EX_OSERR, "vaswprintf");
-	uiLog(tag, heat, str);
-	free(str);
+	assert((size_t)len < sizeof(buf));
+	uiWrite(id, heat, time, buf);
 }
 
-static void keyCode(wchar_t code) {
-	if (code == KEY_RESIZE) uiResize();
-	struct Window *win = windows.active;
-	if (!win) return;
-	switch (code) {
-		break; case KEY_UP:        windowScroll(win, -1);
-		break; case KEY_DOWN:      windowScroll(win, +1);
-		break; case KEY_PPAGE:     windowScroll(win, -(logHeight() - 1));
-		break; case KEY_NPAGE:     windowScroll(win, +(logHeight() - 1));
-		break; case KEY_LEFT:      edit(win->tag, EditLeft, 0);
-		break; case KEY_RIGHT:     edit(win->tag, EditRight, 0);
-		break; case KEY_HOME:      edit(win->tag, EditHome, 0);
-		break; case KEY_END:       edit(win->tag, EditEnd, 0);
-		break; case KEY_DC:        edit(win->tag, EditDelete, 0);
-		break; case KEY_BACKSPACE: edit(win->tag, EditBackspace, 0);
-		break; case KEY_ENTER:     edit(win->tag, EditEnter, 0);
-		break; default: return;
-	}
-	uiStatus();
+void uiResize(void) {
+	wclear(uiMain);
+	wresize(uiMain, MAIN_LINES, COLS);
+	windowResize();
 }
 
-static void keyMeta(wchar_t ch) {
-	struct Window *win = windows.active;
-	if (ch >= L'0' && ch <= L'9') uiShowNum(ch - L'0', false);
-	if (ch == L'a') uiShowAuto();
-	if (ch == L'/' && windows.other) uiShowWindow(windows.other);
-	if (!win) return;
-	switch (ch) {
-		break; case L'b':  edit(win->tag, EditBackWord, 0);
-		break; case L'f':  edit(win->tag, EditForeWord, 0);
-		break; case L'\b': edit(win->tag, EditKillBackWord, 0);
-		break; case L'd':  edit(win->tag, EditKillForeWord, 0);
-		break; case L'l':  uiHide(); logList(win->tag);
-		break; case L'm':  uiLog(win->tag, UICold, L"");
-	}
-}
+static FILE *saveFile;
+
+static const uint64_t Signatures[] = {
+	0x6C72696774616301, // no heat, unread, unreadWarm
+	0x6C72696774616302, // no self.pos
+	0x6C72696774616303, // no buffer line heat
+	0x6C72696774616304, // no mute
+	0x6C72696774616305, // no URLs
+	0x6C72696774616306, // no thresh
+	0x6C72696774616307, // no window time
+	0x6C72696774616308, // no input
+	0x6C72696774616309,
+};
 
-static void keyChar(wchar_t ch) {
-	struct Window *win = windows.active;
-	if (ch == CTRL(L'L')) clearok(curscr, true);
-	if (!win) return;
-	switch (ch) {
-		break; case CTRL(L'N'): uiShowNum(+1, true);
-		break; case CTRL(L'P'): uiShowNum(-1, true);
-
-		break; case CTRL(L'A'): edit(win->tag, EditHome, 0);
-		break; case CTRL(L'B'): edit(win->tag, EditLeft, 0);
-		break; case CTRL(L'D'): edit(win->tag, EditDelete, 0);
-		break; case CTRL(L'E'): edit(win->tag, EditEnd, 0);
-		break; case CTRL(L'F'): edit(win->tag, EditRight, 0);
-		break; case CTRL(L'K'): edit(win->tag, EditKillEnd, 0);
-		break; case CTRL(L'U'): edit(win->tag, EditKill, 0);
-		break; case CTRL(L'W'): edit(win->tag, EditKillBackWord, 0);
-
-		break; case CTRL(L'C'): edit(win->tag, EditInsert, IRCColor);
-		break; case CTRL(L'O'): edit(win->tag, EditInsert, IRCBold);
-		break; case CTRL(L'R'): edit(win->tag, EditInsert, IRCColor);
-		break; case CTRL(L'S'): edit(win->tag, EditInsert, IRCReset);
-		break; case CTRL(L'T'): edit(win->tag, EditInsert, IRCItalic);
-		break; case CTRL(L'V'): edit(win->tag, EditInsert, IRCReverse);
-		break; case CTRL(L'_'): edit(win->tag, EditInsert, IRCUnderline);
-
-		break; case L'\b': edit(win->tag, EditBackspace, 0);
-		break; case L'\t': edit(win->tag, EditComplete, 0);
-		break; case L'\n': edit(win->tag, EditEnter, 0);
-
-		break; default: if (iswprint(ch)) edit(win->tag, EditInsert, ch);
+static size_t signatureVersion(uint64_t signature) {
+	for (size_t i = 0; i < ARRAY_LEN(Signatures); ++i) {
+		if (signature == Signatures[i]) return i;
 	}
+	errx(EX_DATAERR, "unknown save file signature %" PRIX64, signature);
 }
 
-void uiRead(void) {
-	if (ui.hide) uiShow();
-	static bool meta;
-	int ret;
-	wint_t ch;
-	enum TermEvent event;
-	while (ERR != (ret = wget_wch(ui.input, &ch))) {
-		if (ret == KEY_CODE_YES) {
-			keyCode(ch);
-		} else if (ch < 0200 && (event = termEvent((char)ch))) {
-			struct Window *win = windows.active;
-			switch (event) {
-				break; case TermFocusIn:  if (win) windowUnmark(win);
-				break; case TermFocusOut: if (win) windowMark(win);
-				break; default: {}
-			}
-			uiStatus();
-		} else if (ch == Esc) {
-			meta = true;
-			continue;
-		} else if (meta) {
-			keyMeta(ch == Del ? '\b' : ch);
-		} else {
-			keyChar(ch == Del ? '\b' : ch);
-		}
-		meta = false;
-	}
-	uiPrompt(false);
+static int writeUint64(FILE *file, uint64_t u) {
+	return (fwrite(&u, sizeof(u), 1, file) ? 0 : -1);
 }
 
-static bool isAction(struct Tag tag, const wchar_t *input) {
-	if (tag.id == TagStatus.id || tag.id == TagRaw.id) return false;
-	return !wcsncasecmp(input, L"/me ", 4);
+int uiSave(void) {
+	return 0
+		|| ftruncate(fileno(saveFile), 0)
+		|| writeUint64(saveFile, Signatures[8])
+		|| writeUint64(saveFile, self.pos)
+		|| windowSave(saveFile)
+		|| inputSave(saveFile)
+		|| urlSave(saveFile)
+		|| fclose(saveFile);
 }
 
-static bool isCommand(struct Tag tag, const wchar_t *input) {
-	if (tag.id == TagStatus.id || tag.id == TagRaw.id) return true;
-	if (input[0] != L'/') return false;
-	const wchar_t *space = wcschr(&input[1], L' ');
-	const wchar_t *extra = wcschr(&input[1], L'/');
-	return !extra || (space && extra > space);
+static uint64_t readUint64(FILE *file) {
+	uint64_t u;
+	fread(&u, sizeof(u), 1, file);
+	if (ferror(file)) err(EX_IOERR, "fread");
+	if (feof(file)) errx(EX_DATAERR, "unexpected end of save file");
+	return u;
 }
 
-void uiPrompt(bool nickChanged) {
-	static wchar_t *promptMesg;
-	static wchar_t *promptAction;
-	if (nickChanged || !promptMesg || !promptAction) {
-		free(promptMesg);
-		free(promptAction);
-		enum IRCColor color = colorGen(self.user);
-		int len = aswprintf(&promptMesg, L"\3%d<%s>\3 ", color, self.nick);
-		if (len < 0) err(EX_OSERR, "aswprintf");
-		len = aswprintf(&promptAction, L"\3%d* %s\3 ", color, self.nick);
-		if (len < 0) err(EX_OSERR, "aswprintf");
-	}
+void uiLoad(const char *name) {
+	int error;
+	saveFile = dataOpen(name, "a+e");
+	if (!saveFile) exit(EX_CANTCREAT);
+	rewind(saveFile);
 
-	const wchar_t *input = editHead();
+#ifdef __FreeBSD__
+	cap_rights_t rights;
+	cap_rights_init(&rights, CAP_READ, CAP_WRITE, CAP_FLOCK, CAP_FTRUNCATE);
+	error = caph_rights_limit(fileno(saveFile), &rights);
+	if (error) err(EX_OSERR, "cap_rights_limit");
+#endif
+
+	error = flock(fileno(saveFile), LOCK_EX | LOCK_NB);
+	if (error && errno == EWOULDBLOCK) {
+		errx(EX_CANTCREAT, "%s: save file in use", name);
+	}
 
-	wmove(ui.input, 0, 0);
-	if (windows.active) {
-		if (isAction(windows.active->tag, input) && editTail() >= &input[4]) {
-			input = &input[4];
-			addWrap(ui.input, promptAction);
-		} else if (!isCommand(windows.active->tag, input)) {
-			addWrap(ui.input, promptMesg);
-		}
+	time_t signature;
+	fread(&signature, sizeof(signature), 1, saveFile);
+	if (ferror(saveFile)) err(EX_IOERR, "fread");
+	if (feof(saveFile)) {
+		return;
 	}
+	size_t version = signatureVersion(signature);
 
-	int x = 0;
-	struct Format format = { .str = input };
-	formatReset(&format);
-	while (formatParse(&format, editTail())) {
-		if (format.split) getyx(ui.input, _, x);
-		addFormat(ui.input, &format);
+	if (version > 1) {
+		self.pos = readUint64(saveFile);
 	}
-	wclrtoeol(ui.input);
-	wmove(ui.input, 0, x);
+	windowLoad(saveFile, version);
+	inputLoad(saveFile, version);
+	urlLoad(saveFile, version);
 }
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-05-16 06:17:28 +0000