ncurses-4.2-980718

1 files changed, 141 insertions, 0 deletions

diff --git a/lib/libcurses/comp_expand.c b/lib/libcurses/comp_expand.c
new file mode 100644
index 00000000000..a85de82121e
--- /dev/null
+++ b/lib/libcurses/comp_expand.c
@@ -0,0 +1,141 @@
+/*	$OpenBSD: comp_expand.c,v 1.1 1998/07/23 21:17:25 millert Exp $	*/
+
+/****************************************************************************
+ * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Thomas E. Dickey <dickey@clark.net> 1998                        *
+ ****************************************************************************/
+
+#include <curses.priv.h>
+
+#include <ctype.h>
+#include <tic.h>
+
+MODULE_ID("$From: comp_expand.c,v 1.7 1998/05/30 23:32:45 Todd.Miller Exp $")
+
+static int trailing_spaces(const char *src)
+{
+	while (*src == ' ')
+		src++;
+	return *src == 0;
+}
+
+/* this deals with differences over whether 0x7f and 0x80..0x9f are controls */
+#define CHAR_OF(s) (*(unsigned const char *)(s))
+#define REALCTL(s) (CHAR_OF(s) < 127 && iscntrl(CHAR_OF(s)))
+#define REALPRINT(s) (CHAR_OF(s) < 127 && isprint(CHAR_OF(s)))
+
+char *_nc_tic_expand(const char *srcp, bool tic_format)
+{
+static char *	buffer;
+static size_t	length;
+
+int		bufp;
+const char	*ptr, *str = VALID_STRING(srcp) ? srcp : "";
+bool		islong = (strlen(str) > 3);
+size_t		need = (2 + strlen(str)) * 4;
+int		ch;
+
+	if (buffer == 0) {
+		buffer = malloc(length = need);
+	} else if (need > length) {
+		buffer = realloc(buffer, length = need);
+	}
+	if (buffer == 0)
+		return(NULL);
+
+	bufp = 0;
+	ptr = str;
+	while ((ch = (*str & 0xff)) != 0) {
+		if (ch == '%' && REALPRINT(str+1)) {
+			buffer[bufp++] = *str++;
+			buffer[bufp++] = *str;
+		}
+		else if (ch == 128) {
+			buffer[bufp++] = '\\';
+			buffer[bufp++] = '0';
+		}
+		else if (ch == '\033') {
+			buffer[bufp++] = '\\';
+			buffer[bufp++] = 'E';
+		}
+		else if (ch == '\\' && tic_format && (str == srcp || str[-1] != '^')) {
+			buffer[bufp++] = '\\';
+			buffer[bufp++] = '\\';
+		}
+		else if (ch == ' ' && tic_format && (str == srcp || trailing_spaces(str))) {
+			buffer[bufp++] = '\\';
+			buffer[bufp++] = 's';
+		}
+		else if ((ch == ',' || ch == ':' || ch == '^') && tic_format) {
+			buffer[bufp++] = '\\';
+			buffer[bufp++] = ch;
+		}
+		else if (REALPRINT(str) && (ch != ',' && ch != ':' && !(ch == '!' && !tic_format) && ch != '^'))
+			buffer[bufp++] = ch;
+#if 0		/* FIXME: this would be more readable (in fact the whole 'islong' logic should be removed) */
+		else if (ch == '\b') {
+			buffer[bufp++] = '\\';
+			buffer[bufp++] = 'b';
+		}
+		else if (ch == '\f') {
+			buffer[bufp++] = '\\';
+			buffer[bufp++] = 'f';
+		}
+		else if (ch == '\t' && islong) {
+			buffer[bufp++] = '\\';
+			buffer[bufp++] = 't';
+		}
+#endif
+		else if (ch == '\r' && (islong || (strlen(srcp) > 2 && str[1] == '\0'))) {
+			buffer[bufp++] = '\\';
+			buffer[bufp++] = 'r';
+		}
+		else if (ch == '\n' && islong) {
+			buffer[bufp++] = '\\';
+			buffer[bufp++] = 'n';
+		}
+#define UnCtl(c) ((c) + '@')
+		else if (REALCTL(str) && ch != '\\' && (!islong || isdigit(str[1])))
+		{
+			(void) sprintf(&buffer[bufp], "^%c", UnCtl(ch));
+			bufp += 2;
+		}
+		else
+		{
+			(void) sprintf(&buffer[bufp], "\\%03o", ch);
+			bufp += 4;
+		}
+
+		str++;
+	}
+
+	buffer[bufp] = '\0';
+	return(buffer);
+}