Merge branch 'master' into newmouse

1 files changed, 69 insertions, 0 deletions

diff --git a/src/gfile/inc_strings.c b/src/gfile/inc_strings.c
new file mode 100644
index 00000000..692d2dd3
--- /dev/null
+++ b/src/gfile/inc_strings.c
@@ -0,0 +1,69 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+/**
+ * This file is included by src/gfile/gfile.c
+ */
+
+/********************************************************
+ * The virtual string file VMT
+ ********************************************************/
+
+#include <string.h>
+
+// Special String VMT
+static int StringRead(GFILE *f, void *buf, int size) {
+	int		res;
+	char	*p;
+
+	p = ((char *)f->obj) + f->pos;
+	for(res = 0; res < size && *p; res++, p++, buf = ((char *)buf)+1)
+		((char *)buf)[0] = *p;
+	return res;
+}
+static int StringWrite(GFILE *f, const void *buf, int size) {
+	if ((f->flags & GFILEFLG_APPEND)) {
+		while(((char *)f->obj)[f->pos])
+			f->pos++;
+	}
+	memcpy(((char *)f->obj)+f->pos, buf, size);
+	((char *)f->obj)[f->pos+size] = 0;
+	return size;
+}
+static const GFILEVMT StringVMT = {
+	0,								// next
+	0,								// flags
+	'_',							// prefix
+	0, 0, 0, 0,
+	0, 0, StringRead, StringWrite,
+	0, 0, 0,
+	0, 0, 0,
+	#if GFILE_NEED_FILELISTS
+		0, 0, 0,
+	#endif
+};
+
+static void gfileOpenStringFromStaticGFILE(GFILE *f, char *str) {
+	if ((f->flags & GFILEFLG_TRUNC))
+		str[0] = 0;
+	f->vmt = &StringVMT;
+	f->obj = str;
+	f->pos = 0;
+	f->flags |= GFILEFLG_OPEN|GFILEFLG_CANSEEK;
+}
+
+GFILE *gfileOpenString(char *str, const char *mode) {
+	GFILE	*f;
+
+	// Get an empty file and set the flags
+	if (!(f = findemptyfile(mode)))
+		return 0;
+
+	// File is open - fill in all the details
+	gfileOpenStringFromStaticGFILE(f, str);
+	return f;
+}