Add libteken (from FreeBSD) to third_party.

third_party/libteken/teken/demo/teken_demo.c

+/*-
+ * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: head/sys/teken/demo/teken_demo.c 259667 2013-12-20 21:31:50Z ed $
+ */
+
+#include <sys/ioctl.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <ncurses.h>
+#if defined(__FreeBSD__)
+#include <libutil.h>
+#elif defined(__linux__)
+#include <pty.h>
+#else
+#include <util.h>
+#endif
+
+#include <teken.h>
+
+static tf_bell_t        test_bell;
+static tf_cursor_t      test_cursor;
+static tf_putchar_t     test_putchar;
+static tf_fill_t        test_fill;
+static tf_copy_t        test_copy;
+static tf_param_t       test_param;
+static tf_respond_t     test_respond;
+
+static teken_funcs_t tf = {
+        .tf_bell        = test_bell,
+        .tf_cursor      = test_cursor,
+        .tf_putchar     = test_putchar,
+        .tf_fill        = test_fill,
+        .tf_copy        = test_copy,
+        .tf_param       = test_param,
+        .tf_respond     = test_respond,
+};
+
+struct pixel {
+        teken_char_t    c;
+        teken_attr_t    a;
+};
+
+#define NCOLS   80
+#define NROWS   24
+struct pixel buffer[NCOLS][NROWS];
+
+static int ptfd;
+
+static void
+printchar(const teken_pos_t *p)
+{
+        int y, x, attr = 0;
+        struct pixel *px;
+        char str[5] = { 0 };
+
+        assert(p->tp_row < NROWS);
+        assert(p->tp_col < NCOLS);
+
+        px = &buffer[p->tp_col][p->tp_row];
+        /* No need to print right hand side of CJK character manually. */
+        if (px->a.ta_format & TF_CJK_RIGHT)
+                return;
+
+        /* Convert Unicode to UTF-8. */
+        if (px->c < 0x80) {
+                str[0] = px->c;
+        } else if (px->c < 0x800) {
+                str[0] = 0xc0 | (px->c >> 6);
+                str[1] = 0x80 | (px->c & 0x3f);
+        } else if (px->c < 0x10000) {
+                str[0] = 0xe0 | (px->c >> 12);
+                str[1] = 0x80 | ((px->c >> 6) & 0x3f);
+                str[2] = 0x80 | (px->c & 0x3f);
+        } else {
+                str[0] = 0xf0 | (px->c >> 18);
+                str[1] = 0x80 | ((px->c >> 12) & 0x3f);
+                str[2] = 0x80 | ((px->c >> 6) & 0x3f);
+                str[3] = 0x80 | (px->c & 0x3f);
+        }
+
+        if (px->a.ta_format & TF_BOLD)
+                attr |= A_BOLD;
+        if (px->a.ta_format & TF_UNDERLINE)
+                attr |= A_UNDERLINE;
+        if (px->a.ta_format & TF_BLINK)
+                attr |= A_BLINK;
+        if (px->a.ta_format & TF_REVERSE)
+                attr |= A_REVERSE;
+
+        bkgdset(attr | COLOR_PAIR(teken_256to8(px->a.ta_fgcolor) +
+              8 * teken_256to8(px->a.ta_bgcolor)));
+        getyx(stdscr, y, x);
+        mvaddstr(p->tp_row, p->tp_col, str);
+        move(y, x);
+}
+
+static void
+test_bell(void *s __unused)
+{
+
+        beep();
+}
+
+static void
+test_cursor(void *s __unused, const teken_pos_t *p)
+{
+
+        move(p->tp_row, p->tp_col);
+}
+
+static void
+test_putchar(void *s __unused, const teken_pos_t *p, teken_char_t c,
+    const teken_attr_t *a)
+{
+
+        buffer[p->tp_col][p->tp_row].c = c;
+        buffer[p->tp_col][p->tp_row].a = *a;
+        printchar(p);
+}
+
+static void
+test_fill(void *s, const teken_rect_t *r, teken_char_t c,
+    const teken_attr_t *a)
+{
+        teken_pos_t p;
+
+        /* Braindead implementation of fill() - just call putchar(). */
+        for (p.tp_row = r->tr_begin.tp_row; p.tp_row < r->tr_end.tp_row; p.tp_row++)
+                for (p.tp_col = r->tr_begin.tp_col; p.tp_col < r->tr_end.tp_col; p.tp_col++)
+                        test_putchar(s, &p, c, a);
+}
+
+static void
+test_copy(void *s __unused, const teken_rect_t *r, const teken_pos_t *p)
+{
+        int nrow, ncol, x, y; /* Has to be signed - >= 0 comparison */
+        teken_pos_t d;
+
+        /*
+         * Copying is a little tricky. We must make sure we do it in
+         * correct order, to make sure we don't overwrite our own data.
+         */
+
+        nrow = r->tr_end.tp_row - r->tr_begin.tp_row;
+        ncol = r->tr_end.tp_col - r->tr_begin.tp_col;
+
+        if (p->tp_row < r->tr_begin.tp_row) {
+                /* Copy from top to bottom. */
+                if (p->tp_col < r->tr_begin.tp_col) {
+                        /* Copy from left to right. */
+                        for (y = 0; y < nrow; y++) {
+                                d.tp_row = p->tp_row + y;
+                                for (x = 0; x < ncol; x++) {
+                                        d.tp_col = p->tp_col + x;
+                                        buffer[d.tp_col][d.tp_row] =
+                                            buffer[r->tr_begin.tp_col + x][r->tr_begin.tp_row + y];
+                                        printchar(&d);
+                                }
+                        }
+                } else {
+                        /* Copy from right to left. */
+                        for (y = 0; y < nrow; y++) {
+                                d.tp_row = p->tp_row + y;
+                                for (x = ncol - 1; x >= 0; x--) {
+                                        d.tp_col = p->tp_col + x;
+                                        buffer[d.tp_col][d.tp_row] =
+                                            buffer[r->tr_begin.tp_col + x][r->tr_begin.tp_row + y];
+                                        printchar(&d);
+                                }
+                        }
+                }
+        } else {
+                /* Copy from bottom to top. */
+                if (p->tp_col < r->tr_begin.tp_col) {
+                        /* Copy from left to right. */
+                        for (y = nrow - 1; y >= 0; y--) {
+                                d.tp_row = p->tp_row + y;
+                                for (x = 0; x < ncol; x++) {
+                                        d.tp_col = p->tp_col + x;
+                                        buffer[d.tp_col][d.tp_row] =
+                                            buffer[r->tr_begin.tp_col + x][r->tr_begin.tp_row + y];
+                                        printchar(&d);
+                                }
+                        }
+                } else {
+                        /* Copy from right to left. */
+                        for (y = nrow - 1; y >= 0; y--) {
+                                d.tp_row = p->tp_row + y;
+                                for (x = ncol - 1; x >= 0; x--) {
+                                        d.tp_col = p->tp_col + x;
+                                        buffer[d.tp_col][d.tp_row] =
+                                            buffer[r->tr_begin.tp_col + x][r->tr_begin.tp_row + y];
+                                        printchar(&d);
+                                }
+                        }
+                }
+        }
+}
+
+static void
+test_param(void *s __unused, int cmd, unsigned int value)
+{
+
+        switch (cmd) {
+        case TP_SHOWCURSOR:
+                curs_set(value);
+                break;
+        case TP_KEYPADAPP:
+                keypad(stdscr, value ? TRUE : FALSE);
+                break;
+        }
+}
+
+static void
+test_respond(void *s __unused, const void *buf, size_t len)
+{
+
+        write(ptfd, buf, len);
+}
+
+static void
+redraw_border(void)
+{
+        unsigned int i;
+
+        for (i = 0; i < NROWS; i++)
+                mvaddch(i, NCOLS, '|');
+        for (i = 0; i < NCOLS; i++)
+                mvaddch(NROWS, i, '-');
+
+        mvaddch(NROWS, NCOLS, '+');
+}
+
+static void
+redraw_all(void)
+{
+        teken_pos_t tp;
+
+        for (tp.tp_row = 0; tp.tp_row < NROWS; tp.tp_row++)
+                for (tp.tp_col = 0; tp.tp_col < NCOLS; tp.tp_col++)
+                        printchar(&tp);
+
+        redraw_border();
+}
+
+int
+main(int argc __unused, char *argv[] __unused)
+{
+        struct winsize ws;
+        teken_t t;
+        teken_pos_t tp;
+        fd_set rfds;
+        char b[256];
+        ssize_t bl;
+        const int ccolors[8] = {
+            COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_YELLOW,
+            COLOR_BLUE, COLOR_MAGENTA, COLOR_CYAN, COLOR_WHITE
+        };
+        int i, j;
+
+        setlocale(LC_CTYPE, "UTF-8");
+
+        tp.tp_row = ws.ws_row = NROWS;
+        tp.tp_col = ws.ws_col = NCOLS;
+
+        switch (forkpty(&ptfd, NULL, NULL, &ws)) {
+        case -1:
+                perror("forkpty");
+                exit(1);
+        case 0:
+                setenv("TERM", "xterm", 1);
+                setenv("LC_CTYPE", "UTF-8", 0);
+                execlp("zsh", "-zsh", NULL);
+                execlp("bash", "-bash", NULL);
+                execlp("sh", "-sh", NULL);
+                _exit(1);
+        }
+
+        teken_init(&t, &tf, NULL);
+        teken_set_winsize(&t, &tp);
+
+        initscr();
+        raw();
+        start_color();
+        for (i = 0; i < 8; i++)
+                for (j = 0; j < 8; j++)
+                        init_pair(i + 8 * j, ccolors[i], ccolors[j]);
+
+        redraw_border();
+
+        FD_ZERO(&rfds);
+
+        for (;;) {
+                FD_SET(STDIN_FILENO, &rfds);
+                FD_SET(ptfd, &rfds);
+
+                if (select(ptfd + 1, &rfds, NULL, NULL, NULL) < 0) {
+                        if (errno == EINTR) {
+                                redraw_all();
+                                refresh();
+                                continue;
+                        }
+                        break;
+                }
+
+                if (FD_ISSET(STDIN_FILENO, &rfds)) {
+                        bl = read(STDIN_FILENO, b, sizeof b);
+                        if (bl <= 0)
+                                break;
+                        write(ptfd, b, bl);
+                }
+
+                if (FD_ISSET(ptfd, &rfds)) {
+                        bl = read(ptfd, b, sizeof b);
+                        if (bl <= 0)
+                                break;
+                        teken_input(&t, b, bl);
+                        refresh();
+                }
+        }
+
+        endwin();
+
+        return (0);
+}