X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ffileio.cpp;h=d8ff4653da539e4456628739dd74596d857c43e0;hb=6618dd130b72fa3c19b7583855f227160c3384c1;hp=3261c2c95d58c38902d49529fae1ee7e3e2e53e1;hpb=d4af988d8210a0d2c505d663fd7fa8f175a89d3b;p=wozmaker

diff --git a/src/fileio.cpp b/src/fileio.cpp
index 3261c2c..d8ff465 100644
--- a/src/fileio.cpp
+++ b/src/fileio.cpp
@@ -171,11 +171,13 @@ Really, this crap should go into fileio.cpp.  !!! FIX !!!
 
 	if (Global::a2rSize > (60 + Uint32LE(Global::a2r->strmSize)))
 	{
-		Global::metadata = (A2RMetadata *)((uint8_t *)Global::a2r + (60 + Uint32LE(Global::a2r->strmSize)));
+		Global::metadata = (Metadata *)((uint8_t *)Global::a2r + (60 + Uint32LE(Global::a2r->strmSize)));
 
 		// Make sure it's plausible metadata
 		if (memcmp(Global::metadata->metaTag, "META", 4) != 0)
 			Global::metadata = NULL;
+		else
+			UnpackMetadata(Global::metadata);
 	}
 
 	// Unpack TMNG & XTMG streams to simplify analysis
@@ -289,3 +291,130 @@ bool WriteWOZFile(const char * filename)
 	return true;
 }
 
+
+void UnpackMetadata(Metadata * data)
+{
+	uint32_t start = 0;
+	uint32_t end = Uint32LE(data->metaSize);
+	uint32_t i = 0;
+	Global::metaCount = 0;
+
+	while (start < end)
+	{
+		if (i < 255)
+			Global::meta[Global::metaCount][i++] = data->data[start];
+
+		start++;
+
+		if (data->data[start] == '\x0A')
+		{
+			Global::meta[Global::metaCount][i] = 0;
+			Global::metaCount++;
+			i = 0;
+			start++;
+		}
+	}
+}
+
+
+uint8_t * GetMetadata(const char * keyword)
+{
+	uint32_t kwLen = strlen(keyword);
+
+	for(uint8_t i=0; i<Global::metaCount; i++)
+	{
+		if ((strlen((char *)Global::meta[i]) >= kwLen)
+			&& (memcmp(Global::meta[i], keyword, kwLen) == 0))
+		{
+			return &Global::meta[i][kwLen];
+		}
+	}
+
+	return NULL;
+}
+
+
+uint16_t GetRequiredMachineBits(void)
+{
+	uint8_t * kw = GetMetadata("requires_machine\x09");
+	uint32_t kwLen = strlen((char *)kw);
+	uint16_t bits = 0;
+	char type[8];
+	uint8_t typeLen = 0;
+
+	for(uint32_t i=0; i<kwLen; i++)
+	{
+		type[typeLen++] = kw[i];
+
+		if ((kw[i + 1] == '|') || (kw[i + 1] == '\0'))
+		{
+			type[typeLen] = 0;
+
+			if (strcmp(type, "2") == 0)
+				bits |= 0x001;
+			else if (strcmp(type, "2+") == 0)
+				bits |= 0x002;
+			else if (strcmp(type, "2e") == 0)
+				bits |= 0x004;
+			else if (strcmp(type, "2c") == 0)
+				bits |= 0x008;
+			else if (strcmp(type, "2e+") == 0)
+				bits |= 0x010;
+			else if (strcmp(type, "2gs") == 0)
+				bits |= 0x020;
+			else if (strcmp(type, "2c+") == 0)
+				bits |= 0x040;
+			else if (strcmp(type, "3") == 0)
+				bits |= 0x080;
+			else if (strcmp(type, "3+") == 0)
+				bits |= 0x100;
+
+			typeLen = 0;
+			i++;
+		}
+	}
+
+	return bits;
+}
+
+
+uint16_t GetRequiredRAMInK(void)
+{
+	char * kw = (char *)GetMetadata("requires_ram\x09");
+
+	if (strcmp(kw, "16K") == 0)
+		return 16;
+	else if (strcmp(kw, "24K") == 0)
+		return 24;
+	else if (strcmp(kw, "32K") == 0)
+		return 32;
+	else if (strcmp(kw, "48K") == 0)
+		return 48;
+	else if (strcmp(kw, "64K") == 0)
+		return 64;
+	else if (strcmp(kw, "128K") == 0)
+		return 128;
+	else if (strcmp(kw, "256K") == 0)
+		return 256;
+	else if (strcmp(kw, "512K") == 0)
+		return 512;
+	else if (strcmp(kw, "768K") == 0)
+		return 768;
+	else if (strcmp(kw, "1M") == 0)
+		return 1024;
+	else if (strcmp(kw, "1.25M") == 0)
+		return 1280;
+	else if (strcmp(kw, "1.5M+") == 0)
+		return 1536;
+
+	return 0;
+}
+/*
+METADATA Keywords (standard)
+----------------------------
+title, subtitle, publisher, developer, copyright, version, language, requires_ram, requires_machine, notes, side, side_name, contributor, image_date
+
+ram: 16K|24K|32K|48K|64K|128K|256K|512K|768K|1M|1.25M|1.5M+|Unknown
+mch: 2|2+|2e|2c|2e+|2gs|2c+|3|3+
+*/
+