Revert "Remove deprecated code segments (#5891)"

This reverts commit 599e13e95e81aadb959c9f3715aec9b425ede084.

10 files changed, 418 insertions, 34 deletions

diff --git a/build/android/jni/Android.mk b/build/android/jni/Android.mk
index 91983c7a5..7b741e04b 100644
--- a/build/android/jni/Android.mk
+++ b/build/android/jni/Android.mk
@@ -128,6 +128,7 @@ LOCAL_SRC_FILES := \
 		jni/src/content_cao.cpp                   \
 		jni/src/content_cso.cpp                   \
 		jni/src/content_mapblock.cpp              \
+		jni/src/content_mapnode.cpp               \
 		jni/src/content_nodemeta.cpp              \
 		jni/src/content_sao.cpp                   \
 		jni/src/convert_json.cpp                  \
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ba531cb64..6963d0306 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -371,6 +371,7 @@ set(common_SRCS
 	clientiface.cpp
 	collision.cpp
 	content_abm.cpp
+	content_mapnode.cpp
 	content_nodemeta.cpp
 	content_sao.cpp
 	convert_json.cpp
diff --git a/src/content_mapnode.cpp b/src/content_mapnode.cpp
new file mode 100644
index 000000000..a6bf0a82d
--- /dev/null
+++ b/src/content_mapnode.cpp
@@ -0,0 +1,169 @@
+/*
+Minetest
+Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "content_mapnode.h"
+
+#include "irrlichttypes_bloated.h"
+#include "mapnode.h"
+#include "nodedef.h"
+#include "nameidmapping.h"
+#include "util/string.h"
+
+/*
+	Legacy node content type IDs
+	Ranges:
+	0x000...0x07f (0...127): param2 is fully usable
+	126 and 127 are reserved (CONTENT_AIR and CONTENT_IGNORE).
+	0x800...0xfff (2048...4095): higher 4 bits of param2 are not usable
+*/
+#define CONTENT_STONE 0
+#define CONTENT_WATER 2
+#define CONTENT_TORCH 3
+#define CONTENT_WATERSOURCE 9
+#define CONTENT_SIGN_WALL 14
+#define CONTENT_CHEST 15
+#define CONTENT_FURNACE 16
+#define CONTENT_LOCKABLE_CHEST 17
+#define CONTENT_FENCE 21
+#define CONTENT_RAIL 30
+#define CONTENT_LADDER 31
+#define CONTENT_LAVA 32
+#define CONTENT_LAVASOURCE 33
+#define CONTENT_GRASS 0x800 //1
+#define CONTENT_TREE 0x801 //4
+#define CONTENT_LEAVES 0x802 //5
+#define CONTENT_GRASS_FOOTSTEPS 0x803 //6
+#define CONTENT_MESE 0x804 //7
+#define CONTENT_MUD 0x805 //8
+#define CONTENT_CLOUD 0x806 //10
+#define CONTENT_COALSTONE 0x807 //11
+#define CONTENT_WOOD 0x808 //12
+#define CONTENT_SAND 0x809 //13
+#define CONTENT_COBBLE 0x80a //18
+#define CONTENT_STEEL 0x80b //19
+#define CONTENT_GLASS 0x80c //20
+#define CONTENT_MOSSYCOBBLE 0x80d //22
+#define CONTENT_GRAVEL 0x80e //23
+#define CONTENT_SANDSTONE 0x80f //24
+#define CONTENT_CACTUS 0x810 //25
+#define CONTENT_BRICK 0x811 //26
+#define CONTENT_CLAY 0x812 //27
+#define CONTENT_PAPYRUS 0x813 //28
+#define CONTENT_BOOKSHELF 0x814 //29
+#define CONTENT_JUNGLETREE 0x815
+#define CONTENT_JUNGLEGRASS 0x816
+#define CONTENT_NC 0x817
+#define CONTENT_NC_RB 0x818
+#define CONTENT_APPLE 0x819
+#define CONTENT_SAPLING 0x820
+
+/*
+	A conversion table for backwards compatibility.
+	Maps <=v19 content types to current ones.
+	Should never be touched.
+*/
+content_t trans_table_19[21][2] = {
+	{CONTENT_GRASS, 1},
+	{CONTENT_TREE, 4},
+	{CONTENT_LEAVES, 5},
+	{CONTENT_GRASS_FOOTSTEPS, 6},
+	{CONTENT_MESE, 7},
+	{CONTENT_MUD, 8},
+	{CONTENT_CLOUD, 10},
+	{CONTENT_COALSTONE, 11},
+	{CONTENT_WOOD, 12},
+	{CONTENT_SAND, 13},
+	{CONTENT_COBBLE, 18},
+	{CONTENT_STEEL, 19},
+	{CONTENT_GLASS, 20},
+	{CONTENT_MOSSYCOBBLE, 22},
+	{CONTENT_GRAVEL, 23},
+	{CONTENT_SANDSTONE, 24},
+	{CONTENT_CACTUS, 25},
+	{CONTENT_BRICK, 26},
+	{CONTENT_CLAY, 27},
+	{CONTENT_PAPYRUS, 28},
+	{CONTENT_BOOKSHELF, 29},
+};
+
+MapNode mapnode_translate_to_internal(MapNode n_from, u8 version)
+{
+	MapNode result = n_from;
+	if(version <= 19)
+	{
+		content_t c_from = n_from.getContent();
+		for(u32 i=0; i<sizeof(trans_table_19)/sizeof(trans_table_19[0]); i++)
+		{
+			if(trans_table_19[i][1] == c_from)
+			{
+				result.setContent(trans_table_19[i][0]);
+				break;
+			}
+		}
+	}
+	return result;
+}
+
+void content_mapnode_get_name_id_mapping(NameIdMapping *nimap)
+{
+	nimap->set(0, "default:stone");
+	nimap->set(2, "default:water_flowing");
+	nimap->set(3, "default:torch");
+	nimap->set(9, "default:water_source");
+	nimap->set(14, "default:sign_wall");
+	nimap->set(15, "default:chest");
+	nimap->set(16, "default:furnace");
+	nimap->set(17, "default:chest_locked");
+	nimap->set(21, "default:fence_wood");
+	nimap->set(30, "default:rail");
+	nimap->set(31, "default:ladder");
+	nimap->set(32, "default:lava_flowing");
+	nimap->set(33, "default:lava_source");
+	nimap->set(0x800, "default:dirt_with_grass");
+	nimap->set(0x801, "default:tree");
+	nimap->set(0x802, "default:leaves");
+	nimap->set(0x803, "default:dirt_with_grass_footsteps");
+	nimap->set(0x804, "default:mese");
+	nimap->set(0x805, "default:dirt");
+	nimap->set(0x806, "default:cloud");
+	nimap->set(0x807, "default:coalstone");
+	nimap->set(0x808, "default:wood");
+	nimap->set(0x809, "default:sand");
+	nimap->set(0x80a, "default:cobble");
+	nimap->set(0x80b, "default:steelblock");
+	nimap->set(0x80c, "default:glass");
+	nimap->set(0x80d, "default:mossycobble");
+	nimap->set(0x80e, "default:gravel");
+	nimap->set(0x80f, "default:sandstone");
+	nimap->set(0x810, "default:cactus");
+	nimap->set(0x811, "default:brick");
+	nimap->set(0x812, "default:clay");
+	nimap->set(0x813, "default:papyrus");
+	nimap->set(0x814, "default:bookshelf");
+	nimap->set(0x815, "default:jungletree");
+	nimap->set(0x816, "default:junglegrass");
+	nimap->set(0x817, "default:nyancat");
+	nimap->set(0x818, "default:nyancat_rainbow");
+	nimap->set(0x819, "default:apple");
+	nimap->set(0x820, "default:sapling");
+	// Static types
+	nimap->set(CONTENT_IGNORE, "ignore");
+	nimap->set(CONTENT_AIR, "air");
+}
+
diff --git a/src/content_mapnode.h b/src/content_mapnode.h
new file mode 100644
index 000000000..9fa4e6d13
--- /dev/null
+++ b/src/content_mapnode.h
@@ -0,0 +1,37 @@
+/*
+Minetest
+Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef CONTENT_MAPNODE_HEADER
+#define CONTENT_MAPNODE_HEADER
+
+#include "mapnode.h"
+
+/*
+	Legacy node definitions
+*/
+
+// Backwards compatibility for non-extended content types in v19
+extern content_t trans_table_19[21][2];
+MapNode mapnode_translate_to_internal(MapNode n_from, u8 version);
+
+// Get legacy node name mapping for loading old blocks
+class NameIdMapping;
+void content_mapnode_get_name_id_mapping(NameIdMapping *nimap);
+
+#endif
diff --git a/src/inventory.cpp b/src/inventory.cpp
index b4d1b4dd9..8617f7263 100644
--- a/src/inventory.cpp
+++ b/src/inventory.cpp
@@ -24,6 +24,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "log.h"
 #include "itemdef.h"
 #include "util/strfnd.h"
+#include "content_mapnode.h" // For loading legacy MaterialItems
+#include "nameidmapping.h" // For loading legacy MaterialItems
 #include "util/serialize.h"
 #include "util/string.h"
 
@@ -31,6 +33,18 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	ItemStack
 */
 
+static content_t content_translate_from_19_to_internal(content_t c_from)
+{
+	for(u32 i=0; i<sizeof(trans_table_19)/sizeof(trans_table_19[0]); i++)
+	{
+		if(trans_table_19[i][1] == c_from)
+		{
+			return trans_table_19[i][0];
+		}
+	}
+	return c_from;
+}
+
 ItemStack::ItemStack(const std::string &name_, u16 count_,
 		u16 wear_, IItemDefManager *itemdef) :
 	name(itemdef->getAlias(name_)),
@@ -85,35 +99,140 @@ void ItemStack::deSerialize(std::istream &is, IItemDefManager *itemdef)
 	if(!tmp.empty())
 		throw SerializationError("Unexpected text after item name");
 
-	do { // This loop is just to allow "break;"
-		// The real thing
-
-		// Apply item aliases
+	if(name == "MaterialItem")
+	{
+		// Obsoleted on 2011-07-30
+
+		u16 material;
+		is>>material;
+		u16 materialcount;
+		is>>materialcount;
+		// Convert old materials
+		if(material <= 0xff)
+			material = content_translate_from_19_to_internal(material);
+		if(material > 0xfff)
+			throw SerializationError("Too large material number");
+		// Convert old id to name
+		NameIdMapping legacy_nimap;
+		content_mapnode_get_name_id_mapping(&legacy_nimap);
+		legacy_nimap.getName(material, name);
+		if(name == "")
+			name = "unknown_block";
 		if (itemdef)
 			name = itemdef->getAlias(name);
-
-		// Read the count
-		std::string count_str;
-		std::getline(is, count_str, ' ');
-		if (count_str.empty()) {
+		count = materialcount;
+	}
+	else if(name == "MaterialItem2")
+	{
+		// Obsoleted on 2011-11-16
+
+		u16 material;
+		is>>material;
+		u16 materialcount;
+		is>>materialcount;
+		if(material > 0xfff)
+			throw SerializationError("Too large material number");
+		// Convert old id to name
+		NameIdMapping legacy_nimap;
+		content_mapnode_get_name_id_mapping(&legacy_nimap);
+		legacy_nimap.getName(material, name);
+		if(name == "")
+			name = "unknown_block";
+		if (itemdef)
+			name = itemdef->getAlias(name);
+		count = materialcount;
+	}
+	else if(name == "node" || name == "NodeItem" || name == "MaterialItem3"
+			|| name == "craft" || name == "CraftItem")
+	{
+		// Obsoleted on 2012-01-07
+
+		std::string all;
+		std::getline(is, all, '\n');
+		// First attempt to read inside ""
+		Strfnd fnd(all);
+		fnd.next("\"");
+		// If didn't skip to end, we have ""s
+		if(!fnd.at_end()){
+			name = fnd.next("\"");
+		} else { // No luck, just read a word then
+			fnd.start(all);
+			name = fnd.next(" ");
+		}
+		fnd.skip_over(" ");
+		if (itemdef)
+			name = itemdef->getAlias(name);
+		count = stoi(trim(fnd.next("")));
+		if(count == 0)
 			count = 1;
-			break;
-		} else {
-			count = stoi(count_str);
+	}
+	else if(name == "MBOItem")
+	{
+		// Obsoleted on 2011-10-14
+		throw SerializationError("MBOItem not supported anymore");
+	}
+	else if(name == "tool" || name == "ToolItem")
+	{
+		// Obsoleted on 2012-01-07
+
+		std::string all;
+		std::getline(is, all, '\n');
+		// First attempt to read inside ""
+		Strfnd fnd(all);
+		fnd.next("\"");
+		// If didn't skip to end, we have ""s
+		if(!fnd.at_end()){
+			name = fnd.next("\"");
+		} else { // No luck, just read a word then
+			fnd.start(all);
+			name = fnd.next(" ");
 		}
+		count = 1;
+		// Then read wear
+		fnd.skip_over(" ");
+		if (itemdef)
+			name = itemdef->getAlias(name);
+		wear = stoi(trim(fnd.next("")));
+	}
+	else
+	{
+		do  // This loop is just to allow "break;"
+		{
+			// The real thing
+
+			// Apply item aliases
+			if (itemdef)
+				name = itemdef->getAlias(name);
+
+			// Read the count
+			std::string count_str;
+			std::getline(is, count_str, ' ');
+			if(count_str.empty())
+			{
+				count = 1;
+				break;
+			}
+			else
+				count = stoi(count_str);
 
-		// Read the wear
-		std::string wear_str;
-		std::getline(is, wear_str, ' ');
-		if (wear_str.empty())
-			break;
-		else
-			wear = stoi(wear_str);
+			// Read the wear
+			std::string wear_str;
+			std::getline(is, wear_str, ' ');
+			if(wear_str.empty())
+				break;
+			else
+				wear = stoi(wear_str);
 
-		// Read metadata
-		metadata.deSerialize(is);
+			// Read metadata
+			metadata.deSerialize(is);
 
-	} while(false);
+			// In case fields are added after metadata, skip space here:
+			//std::getline(is, tmp, ' ');
+			//if(!tmp.empty())
+			//	throw SerializationError("Unexpected text after metadata");
+
+		} while(false);
+	}
 
 	if (name.empty() || count == 0)
 		clear();
diff --git a/src/mapblock.cpp b/src/mapblock.cpp
index 07912b9a2..ec10a49bb 100644
--- a/src/mapblock.cpp
+++ b/src/mapblock.cpp
@@ -27,6 +27,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "gamedef.h"
 #include "log.h"
 #include "nameidmapping.h"
+#include "content_mapnode.h" // For legacy name-id mapping
 #include "content_nodemeta.h" // For legacy deserialization
 #include "serialization.h"
 #ifndef SERVER
@@ -930,7 +931,12 @@ void MapBlock::deSerialize_pre22(std::istream &is, u8 version, bool disk)
 		// Dynamically re-set ids based on node names
 		NameIdMapping nimap;
 		// If supported, read node definition id mapping
-		nimap.deSerialize(is);
+		if (version >= 21) {
+			nimap.deSerialize(is);
+		// Else set the legacy mapping
+		} else {
+			content_mapnode_get_name_id_mapping(&nimap);
+		}
 		correctBlockNodeIds(&nimap, data, m_gamedef);
 	}
 
diff --git a/src/mapnode.cpp b/src/mapnode.cpp
index cae3d0b14..d835daba2 100644
--- a/src/mapnode.cpp
+++ b/src/mapnode.cpp
@@ -22,6 +22,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "porting.h"
 #include "nodedef.h"
 #include "map.h"
+#include "content_mapnode.h" // For mapnode_translate_*_internal
 #include "serialization.h" // For ser_ver_supported
 #include "util/serialize.h"
 #include "log.h"
@@ -630,19 +631,25 @@ void MapNode::serialize(u8 *dest, u8 version)
 }
 void MapNode::deSerialize(u8 *source, u8 version)
 {
-	if (!ser_ver_supported(version))
+	if(!ser_ver_supported(version))
 		throw VersionMismatchException("ERROR: MapNode format not supported");
 
-	if (version >= 24) {
-		param0 = readU16(source + 0);
-		param1 = readU8(source + 2);
-		param2 = readU8(source + 3);
-	} else {
-		param0 = readU8(source + 0);
-		param1 = readU8(source + 1);
-		param2 = readU8(source + 2);
-		if (param0 > 0x7F) {
-			param0 |= ((param2 & 0xF0) << 4);
+	if(version <= 21)
+	{
+		deSerialize_pre22(source, version);
+		return;
+	}
+
+	if(version >= 24){
+		param0 = readU16(source+0);
+		param1 = readU8(source+2);
+		param2 = readU8(source+3);
+	}else{
+		param0 = readU8(source+0);
+		param1 = readU8(source+1);
+		param2 = readU8(source+2);
+		if(param0 > 0x7F){
+			param0 |= ((param2&0xF0)<<4);
 			param2 &= 0x0F;
 		}
 	}
@@ -764,3 +771,44 @@ void MapNode::deSerializeBulk(std::istream &is, int version,
 	}
 }
 
+/*
+	Legacy serialization
+*/
+void MapNode::deSerialize_pre22(u8 *source, u8 version)
+{
+	if(version <= 1)
+	{
+		param0 = source[0];
+	}
+	else if(version <= 9)
+	{
+		param0 = source[0];
+		param1 = source[1];
+	}
+	else
+	{
+		param0 = source[0];
+		param1 = source[1];
+		param2 = source[2];
+		if(param0 > 0x7f){
+			param0 <<= 4;
+			param0 |= (param2&0xf0)>>4;
+			param2 &= 0x0f;
+		}
+	}
+
+	// Convert special values from old version to new
+	if(version <= 19)
+	{
+		// In these versions, CONTENT_IGNORE and CONTENT_AIR
+		// are 255 and 254
+		// Version 19 is fucked up with sometimes the old values and sometimes not
+		if(param0 == 255)
+			param0 = CONTENT_IGNORE;
+		else if(param0 == 254)
+			param0 = CONTENT_AIR;
+	}
+
+	// Translate to our known version
+	*this = mapnode_translate_to_internal(*this, version);
+}
diff --git a/src/server.cpp b/src/server.cpp
index 46176c667..b2fdecfa9 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -45,6 +45,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "emerge.h"
 #include "mapgen.h"
 #include "mg_biome.h"
+#include "content_mapnode.h"
 #include "content_nodemeta.h"
 #include "content_abm.h"
 #include "content_sao.h"
diff --git a/src/unittest/test_mapnode.cpp b/src/unittest/test_mapnode.cpp
index 145d16465..70e7d42cf 100644
--- a/src/unittest/test_mapnode.cpp
+++ b/src/unittest/test_mapnode.cpp
@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "gamedef.h"
 #include "nodedef.h"
+#include "content_mapnode.h"
 
 class TestMapNode : public TestBase
 {
diff --git a/util/travis/clang-format-whitelist.txt b/util/travis/clang-format-whitelist.txt
index e540bd01e..932f59978 100644
--- a/util/travis/clang-format-whitelist.txt
+++ b/util/travis/clang-format-whitelist.txt
@@ -39,6 +39,7 @@ src/content_cso.cpp
 src/content_cso.h
 src/content_mapblock.cpp
 src/content_mapblock.h
+src/content_mapnode.cpp
 src/content_nodemeta.cpp
 src/content_nodemeta.h
 src/content_sao.cpp