support: renamed source to hscroll.c

There is only strscroll() left in support.c.  Give the source a better
name.

1 files changed, 77 insertions, 0 deletions

diff --git a/src/hscroll.c b/src/hscroll.c
new file mode 100644
index 000000000..2915a112c
--- /dev/null
+++ b/src/hscroll.c
@@ -0,0 +1,77 @@
+/*
+ * (c) 2004 by Kalle Wallin <kaw@linux.se>
+ *
+ * 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 "hscroll.h"
+#include "charset.h"
+#include "config.h"
+
+#include <assert.h>
+#include <ctype.h>
+#include <string.h>
+
+#ifndef NCMPC_MINI
+
+// FIXME: utf-8 length
+char *
+strscroll(char *str, char *separator, int width, scroll_state_t *st)
+{
+	gchar *tmp, *buf;
+	gsize len, size;
+
+	assert(str != NULL);
+	assert(separator != NULL);
+	assert(st != NULL);
+
+	if( st->offset==0 ) {
+		st->offset++;
+		return g_strdup(str);
+	}
+
+	/* create a buffer containing the string and the separator */
+	size = strlen(str)+strlen(separator)+1;
+	tmp = g_malloc(size);
+	g_strlcpy(tmp, str, size);
+	g_strlcat(tmp, separator, size);
+	len = utf8_width(tmp);
+
+	if (st->offset >= len)
+		st->offset = 0;
+
+	/* create the new scrolled string */
+	size = width+1;
+	if (g_utf8_validate(tmp, -1, NULL) ) {
+		int ulen;
+		buf = g_malloc(size*6);// max length of utf8 char is 6
+		g_utf8_strncpy(buf, g_utf8_offset_to_pointer(tmp,st->offset), size);
+		if( (ulen = g_utf8_strlen(buf, -1)) < width )
+			g_utf8_strncpy(buf+strlen(buf), tmp, size - ulen - 1);
+	} else {
+		buf = g_malloc(size);
+		g_strlcpy(buf, tmp+st->offset, size);
+		if (strlen(buf) < (size_t)width)
+			g_strlcat(buf, tmp, size);
+	}
+	if( time(NULL)-st->t >= 1 ) {
+		st->t = time(NULL);
+		st->offset++;
+	}
+	g_free(tmp);
+	return buf;
+}
+
+#endif