New upstream version 5.2.0Beta2.1upstream/5.2.0Beta2.1upstream

1 files changed, 92 insertions, 0 deletions

diff --git a/app/bin/shortentext.c b/app/bin/shortentext.c
new file mode 100644
index 0000000..6cd16e6
--- /dev/null
+++ b/app/bin/shortentext.c
@@ -0,0 +1,92 @@
+/** \file stringutils.c
+ * Some assorted string handling functions
+ */
+
+ /*  XTrackCAD - Model Railroad CAD
+  *  Copyright (C) 2019 Martin Fischer
+  *
+  *  This program is free software; you can redistribute it and/or modify
+  *  it under the terms of the GNU General Public License as published by
+  *  the Free Software Foundation; either version 2 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 General Public License for more details.
+  *
+  *  You should have received a copy of the GNU General Public License
+  *  along with this program; if not, write to the Free Software
+  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+  */
+ 
+#include <string.h>
+#include "shortentext.h"
+
+#define WHITESPACES "\n\r\t "
+#define ELLIPSIZE "..."
+
+/**
+ * Replace all whitespace characters with blanks. Successive occurences are reduced to a single blank.
+ * 
+ * \param source IN string to convert
+ * \param dest IN buffer for converted string, minimum size is the size of the source string
+ */
+void
+RemoveFormatChars( char *source, char *dest )
+{
+	int lastChar = '\0';
+
+	while (*source) {
+		if (strchr(WHITESPACES, *source)) {
+			if (lastChar != ' ') {
+				*dest++ = ' ';
+				lastChar = ' ';
+			}
+		} else {
+			lastChar = *source;
+			*dest++ = lastChar;
+		}
+		source++;
+	}
+	if (lastChar != ' ') {
+		*dest = '\0';
+	} else {
+		*(dest - 1) = '\0';
+	}
+}
+
+void
+EllipsizeString(char *source, char *dest, size_t length)
+{
+	size_t position;
+	char *resultString = (dest ? dest: source);
+
+
+	// trivial case: nothing to do if source is shorter and no inplace
+	if( strlen(source)  <= length )
+	{
+		if( dest )
+			strcpy(dest, source);
+		return;
+	}
+
+	strncpy(resultString, source, length);
+	resultString[ length ] = '\0';
+
+	position = length - 1;
+	while (position) {
+		if (resultString[position] == ' ' && position <= (length - sizeof(ELLIPSIZE))) {
+			strcpy(resultString + position, ELLIPSIZE);
+			break;
+		} else {
+			position--;
+		}
+	}
+
+	// no blank in string, replace the last n chars 
+	if (!position) {
+		strcpy(resultString + (strlen(resultString) - sizeof(ELLIPSIZE) + 1), ELLIPSIZE);
+	}
+	return;
+}
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