X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fenums.c;fp=source%2Fenums.c;h=4875aa366aec8e5dbd6ab7997e1b04f117f6f4b5;hb=49f8063ce156a50d4b3b8c77a1508a21ea2bfe90;hp=0000000000000000000000000000000000000000;hpb=2e4973ec66cd8ae12d4253e3c3ad9e36a8a4bca6;p=gldbg.git

diff --git a/source/enums.c b/source/enums.c
new file mode 100644
index 0000000..4875aa3
--- /dev/null
+++ b/source/enums.c
@@ -0,0 +1,89 @@
+/* $Id$
+
+This file is part of gldbg
+Copyright © 2009  Mikko Rasa, Mikkosoft Productions
+Distributed under the GPL
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "enums.h"
+
+typedef struct sEnumInfo
+{
+	GLenum value;
+	const char *category;
+	const char *name;
+} EnumInfo;
+
+#include "enums.table"
+
+char *buffer = 0;
+unsigned buf_pos = 0;
+
+static char *buf_reserve(unsigned size)
+{
+	char *ptr;
+	if(!buffer)
+		buffer = (char *)malloc(2048);
+	if(buf_pos+size>2048)
+		buf_pos = 0;
+	ptr = buffer+buf_pos;
+	buf_pos += size;
+	return ptr;
+}
+
+const char *describe_enum(GLenum value, const char *categ)
+{
+	unsigned low = 0;
+	unsigned high = enum_count;
+	char *ptr;
+
+	while(high>low+1)
+	{
+		unsigned mid = (low+high)/2;
+		int cmp;
+
+		if(enums[mid].value<value)
+			cmp = -1;
+		else if(enums[mid].value>value)
+			cmp = 1;
+		else
+			cmp = strcmp(enums[mid].category, categ);
+
+		if(cmp<0)
+			low = mid;
+		else if(cmp>0)
+			high = mid;
+		else
+			return enums[mid].name;
+	}
+
+	if(enums[low].value==value)
+		return enums[low].name;
+	if(enums[high].value==value)
+		return enums[high].name;
+
+	ptr = buf_reserve(20);
+	snprintf(ptr, 20, "GLenum(0x%X)", value);
+	return ptr;
+}
+
+const char *describe_bitfield(int mask, const char *categ)
+{
+	int bit;
+	char *buf = buf_reserve(200);
+	char *ptr = buf;
+
+	for(bit=1; bit; bit<<=1)
+		if(mask&bit)
+		{
+			const char *bdesc = describe_enum(bit, categ);
+			if(ptr!=buf)
+				*ptr++ = '|';
+			while(*bdesc)
+				*ptr++ = *bdesc++;
+		}
+	*ptr = 0;
+	return buf;
+}