Adding upstream version 3.3a.upstream/3.3a

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 269 insertions, 0 deletions

diff --git a/tty-acs.c b/tty-acs.c
new file mode 100644
index 0000000..64ba367
--- /dev/null
+++ b/tty-acs.c
@@ -0,0 +1,269 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2010 Nicholas Marriott <nicholas.marriott@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "tmux.h"
+
+/* Table mapping ACS entries to UTF-8. */
+struct tty_acs_entry {
+	u_char		 key;
+	const char	*string;
+};
+static const struct tty_acs_entry tty_acs_table[] = {
+	{ '+', "\342\206\222" },	/* arrow pointing right */
+	{ ',', "\342\206\220" },	/* arrow pointing left */
+	{ '-', "\342\206\221" },	/* arrow pointing up */
+	{ '.', "\342\206\223" },	/* arrow pointing down */
+	{ '0', "\342\226\256" },	/* solid square block */
+	{ '`', "\342\227\206" },	/* diamond */
+	{ 'a', "\342\226\222" },	/* checker board (stipple) */
+	{ 'b', "\342\220\211" },
+	{ 'c', "\342\220\214" },
+	{ 'd', "\342\220\215" },
+	{ 'e', "\342\220\212" },
+	{ 'f', "\302\260" },		/* degree symbol */
+	{ 'g', "\302\261" },		/* plus/minus */
+	{ 'h', "\342\220\244" },
+	{ 'i', "\342\220\213" },
+	{ 'j', "\342\224\230" },	/* lower right corner */
+	{ 'k', "\342\224\220" },	/* upper right corner */
+	{ 'l', "\342\224\214" },	/* upper left corner */
+	{ 'm', "\342\224\224" },	/* lower left corner */
+	{ 'n', "\342\224\274" },	/* large plus or crossover */
+	{ 'o', "\342\216\272" },	/* scan line 1 */
+	{ 'p', "\342\216\273" },	/* scan line 3 */
+	{ 'q', "\342\224\200" },	/* horizontal line */
+	{ 'r', "\342\216\274" },	/* scan line 7 */
+	{ 's', "\342\216\275" },	/* scan line 9 */
+	{ 't', "\342\224\234" },	/* tee pointing right */
+	{ 'u', "\342\224\244" },	/* tee pointing left */
+	{ 'v', "\342\224\264" },	/* tee pointing up */
+	{ 'w', "\342\224\254" },	/* tee pointing down */
+	{ 'x', "\342\224\202" },	/* vertical line */
+	{ 'y', "\342\211\244" },	/* less-than-or-equal-to */
+	{ 'z', "\342\211\245" },	/* greater-than-or-equal-to */
+	{ '{', "\317\200" },		/* greek pi */
+	{ '|', "\342\211\240" },	/* not-equal */
+	{ '}', "\302\243" },		/* UK pound sign */
+	{ '~', "\302\267" }		/* bullet */
+};
+
+/* Table mapping UTF-8 to ACS entries. */
+struct tty_acs_reverse_entry {
+	const char	*string;
+	u_char		 key;
+};
+static const struct tty_acs_reverse_entry tty_acs_reverse2[] = {
+	{ "\302\267", '~' }
+};
+static const struct tty_acs_reverse_entry tty_acs_reverse3[] = {
+	{ "\342\224\200", 'q' },
+	{ "\342\224\201", 'q' },
+	{ "\342\224\202", 'x' },
+	{ "\342\224\203", 'x' },
+	{ "\342\224\214", 'l' },
+	{ "\342\224\217", 'k' },
+	{ "\342\224\220", 'k' },
+	{ "\342\224\223", 'l' },
+	{ "\342\224\224", 'm' },
+	{ "\342\224\227", 'm' },
+	{ "\342\224\230", 'j' },
+	{ "\342\224\233", 'j' },
+	{ "\342\224\234", 't' },
+	{ "\342\224\243", 't' },
+	{ "\342\224\244", 'u' },
+	{ "\342\224\253", 'u' },
+	{ "\342\224\263", 'w' },
+	{ "\342\224\264", 'v' },
+	{ "\342\224\273", 'v' },
+	{ "\342\224\274", 'n' },
+	{ "\342\225\213", 'n' },
+	{ "\342\225\220", 'q' },
+	{ "\342\225\221", 'x' },
+	{ "\342\225\224", 'l' },
+	{ "\342\225\227", 'k' },
+	{ "\342\225\232", 'm' },
+	{ "\342\225\235", 'j' },
+	{ "\342\225\240", 't' },
+	{ "\342\225\243", 'u' },
+	{ "\342\225\246", 'w' },
+	{ "\342\225\251", 'v' },
+	{ "\342\225\254", 'n' },
+};
+
+/* UTF-8 double borders. */
+static const struct utf8_data tty_acs_double_borders_list[] = {
+	{ "", 0, 0, 0 },
+	{ "\342\225\221", 0, 3, 1 }, /* U+2551 */
+	{ "\342\225\220", 0, 3, 1 }, /* U+2550 */
+	{ "\342\225\224", 0, 3, 1 }, /* U+2554 */
+	{ "\342\225\227", 0, 3, 1 }, /* U+2557 */
+	{ "\342\225\232", 0, 3, 1 }, /* U+255A */
+	{ "\342\225\235", 0, 3, 1 }, /* U+255D */
+	{ "\342\225\246", 0, 3, 1 }, /* U+2566 */
+	{ "\342\225\251", 0, 3, 1 }, /* U+2569 */
+	{ "\342\225\240", 0, 3, 1 }, /* U+2560 */
+	{ "\342\225\243", 0, 3, 1 }, /* U+2563 */
+	{ "\342\225\254", 0, 3, 1 }, /* U+256C */
+	{ "\302\267",	  0, 2, 1 }  /* U+00B7 */
+};
+
+/* UTF-8 heavy borders. */
+static const struct utf8_data tty_acs_heavy_borders_list[] = {
+	{ "", 0, 0, 0 },
+	{ "\342\224\203", 0, 3, 1 }, /* U+2503 */
+	{ "\342\224\201", 0, 3, 1 }, /* U+2501 */
+	{ "\342\224\217", 0, 3, 1 }, /* U+250F */
+	{ "\342\224\223", 0, 3, 1 }, /* U+2513 */
+	{ "\342\224\227", 0, 3, 1 }, /* U+2517 */
+	{ "\342\224\233", 0, 3, 1 }, /* U+251B */
+	{ "\342\224\263", 0, 3, 1 }, /* U+2533 */
+	{ "\342\224\273", 0, 3, 1 }, /* U+253B */
+	{ "\342\224\243", 0, 3, 1 }, /* U+2523 */
+	{ "\342\224\253", 0, 3, 1 }, /* U+252B */
+	{ "\342\225\213", 0, 3, 1 }, /* U+254B */
+	{ "\302\267",	  0, 2, 1 }  /* U+00B7 */
+};
+
+/* UTF-8 rounded borders. */
+static const struct utf8_data tty_acs_rounded_borders_list[] = {
+	{ "", 0, 0, 0 },
+	{ "\342\224\202", 0, 3, 1 }, /* U+2502 */
+	{ "\342\224\200", 0, 3, 1 }, /* U+2500 */
+	{ "\342\225\255", 0, 3, 1 }, /* U+256D */
+	{ "\342\225\256", 0, 3, 1 }, /* U+256E */
+	{ "\342\225\260", 0, 3, 1 }, /* U+2570 */
+	{ "\342\225\257", 0, 3, 1 }, /* U+256F */
+	{ "\342\224\263", 0, 3, 1 }, /* U+2533 */
+	{ "\342\224\273", 0, 3, 1 }, /* U+253B */
+	{ "\342\224\243", 0, 3, 1 }, /* U+2523 */
+	{ "\342\224\253", 0, 3, 1 }, /* U+252B */
+	{ "\342\225\213", 0, 3, 1 }, /* U+254B */
+	{ "\302\267",	  0, 2, 1 }  /* U+00B7 */
+};
+
+/* Get cell border character for double style. */
+const struct utf8_data *
+tty_acs_double_borders(int cell_type)
+{
+	return (&tty_acs_double_borders_list[cell_type]);
+}
+
+/* Get cell border character for heavy style. */
+const struct utf8_data *
+tty_acs_heavy_borders(int cell_type)
+{
+	return (&tty_acs_heavy_borders_list[cell_type]);
+}
+
+/* Get cell border character for rounded style. */
+const struct utf8_data *
+tty_acs_rounded_borders(int cell_type)
+{
+	return (&tty_acs_rounded_borders_list[cell_type]);
+}
+
+static int
+tty_acs_cmp(const void *key, const void *value)
+{
+	const struct tty_acs_entry	*entry = value;
+	int				 test = *(u_char *)key;
+
+	return (test - entry->key);
+}
+
+static int
+tty_acs_reverse_cmp(const void *key, const void *value)
+{
+	const struct tty_acs_reverse_entry	*entry = value;
+	const char				*test = key;
+
+	return (strcmp(test, entry->string));
+}
+
+/* Should this terminal use ACS instead of UTF-8 line drawing? */
+int
+tty_acs_needed(struct tty *tty)
+{
+	if (tty == NULL)
+		return (0);
+
+	/*
+	 * If the U8 flag is present, it marks whether a terminal supports
+	 * UTF-8 and ACS together.
+	 *
+	 * If it is present and zero, we force ACS - this gives users a way to
+	 * turn off UTF-8 line drawing.
+	 *
+	 * If it is nonzero, we can fall through to the default and use UTF-8
+	 * line drawing on UTF-8 terminals.
+	 */
+	if (tty_term_has(tty->term, TTYC_U8) &&
+	    tty_term_number(tty->term, TTYC_U8) == 0)
+		return (1);
+
+	if (tty->client->flags & CLIENT_UTF8)
+		return (0);
+	return (1);
+}
+
+/* Retrieve ACS to output as UTF-8. */
+const char *
+tty_acs_get(struct tty *tty, u_char ch)
+{
+	const struct tty_acs_entry	*entry;
+
+	/* Use the ACS set instead of UTF-8 if needed. */
+	if (tty_acs_needed(tty)) {
+		if (tty->term->acs[ch][0] == '\0')
+			return (NULL);
+		return (&tty->term->acs[ch][0]);
+	}
+
+	/* Otherwise look up the UTF-8 translation. */
+	entry = bsearch(&ch, tty_acs_table, nitems(tty_acs_table),
+	    sizeof tty_acs_table[0], tty_acs_cmp);
+	if (entry == NULL)
+		return (NULL);
+	return (entry->string);
+}
+
+/* Reverse UTF-8 into ACS. */
+int
+tty_acs_reverse_get(__unused struct tty *tty, const char *s, size_t slen)
+{
+	const struct tty_acs_reverse_entry	*table, *entry;
+	u_int					 items;
+
+	if (slen == 2) {
+		table = tty_acs_reverse2;
+		items = nitems(tty_acs_reverse2);
+	} else if (slen == 3) {
+		table = tty_acs_reverse3;
+		items = nitems(tty_acs_reverse3);
+	} else
+		return (-1);
+	entry = bsearch(s, table, items, sizeof table[0], tty_acs_reverse_cmp);
+	if (entry == NULL)
+		return (-1);
+	return (entry->key);
+}