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Diffstat (limited to 'ncurses/tinfo/comp_expand.c')
-rw-r--r--ncurses/tinfo/comp_expand.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/ncurses/tinfo/comp_expand.c b/ncurses/tinfo/comp_expand.c
new file mode 100644
index 000000000000..ef419d84cd2c
--- /dev/null
+++ b/ncurses/tinfo/comp_expand.c
@@ -0,0 +1,192 @@
+/****************************************************************************
+ * Copyright (c) 1998-2001,2006 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("$Id: comp_expand.c,v 1.18 2006/06/17 19:37:14 tom 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 REALCTL(s) (UChar(*(s)) < 127 && iscntrl(UChar(*(s))))
+#define REALPRINT(s) (UChar(*(s)) < 127 && isprint(UChar(*(s))))
+
+NCURSES_EXPORT(char *)
+_nc_tic_expand(const char *srcp, bool tic_format, int numbers)
+{
+ static char *buffer;
+ static size_t length;
+
+ int bufp;
+ const char *str = VALID_STRING(srcp) ? srcp : "";
+ bool islong = (strlen(str) > 3);
+ size_t need = (2 + strlen(str)) * 4;
+ int ch;
+
+#if NO_LEAKS
+ if (srcp == 0) {
+ if (buffer != 0) {
+ FreeAndNull(buffer);
+ length = 0;
+ }
+ return 0;
+ }
+#endif
+ if (buffer == 0 || need > length) {
+ if ((buffer = typeRealloc(char, length = need, buffer)) == 0)
+ return 0;
+ }
+
+ bufp = 0;
+ while ((ch = UChar(*str)) != 0) {
+ if (ch == '%' && REALPRINT(str + 1)) {
+ buffer[bufp++] = *str++;
+ /*
+ * Though the character literals are more compact, most
+ * terminal descriptions use numbers and are not easy
+ * to read in character-literal form.
+ */
+ switch (numbers) {
+ case -1:
+ if (str[0] == S_QUOTE
+ && str[1] != '\\'
+ && REALPRINT(str + 1)
+ && str[2] == S_QUOTE) {
+ sprintf(buffer + bufp, "{%d}", str[1]);
+ bufp += strlen(buffer + bufp);
+ str += 2;
+ } else {
+ buffer[bufp++] = *str;
+ }
+ break;
+ /*
+ * If we have a "%{number}", try to translate it into
+ * a "%'char'" form, since that will run a little faster
+ * when we're interpreting it. Also, having one form
+ * for the constant makes it simpler to compare terminal
+ * descriptions.
+ */
+ case 1:
+ if (str[0] == L_BRACE
+ && isdigit(UChar(str[1]))) {
+ char *dst = 0;
+ long value = strtol(str + 1, &dst, 0);
+ if (dst != 0
+ && *dst == R_BRACE
+ && value < 127
+ && value != '\\' /* FIXME */
+ && isprint((int) value)) {
+ ch = (int) value;
+ buffer[bufp++] = S_QUOTE;
+ if (ch == '\\'
+ || ch == S_QUOTE)
+ buffer[bufp++] = '\\';
+ buffer[bufp++] = ch;
+ buffer[bufp++] = S_QUOTE;
+ str = dst;
+ } else {
+ buffer[bufp++] = *str;
+ }
+ } else {
+ buffer[bufp++] = *str;
+ }
+ break;
+ default:
+ buffer[bufp++] = *str;
+ break;
+ }
+ } 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(UChar(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);
+}