# HG changeset patch
# User KUDr
# Date 1167599620 0
# Node ID 0570ae95322235c9f8e561b452926e8a1c734e14
# Parent  d6197e6c420e92901bbd4a151fad247c3ba32dba
(svn r7708) [cbh] - Fix: [YAPF] added some YAPF debug messages, added string support used for new debugging stuff, resolved few cbh related issues

diff -r d6197e6c420e -r 0570ae953222 yapf/blob.hpp
--- a/yapf/blob.hpp	Sun Dec 31 18:03:21 2006 +0000
+++ b/yapf/blob.hpp	Sun Dec 31 21:13:40 2006 +0000
@@ -4,99 +4,106 @@
 #define  BLOB_HPP
 
 /** Type-safe version of memcpy().
- * @param d destination buffer
- * @param s source buffer
- * @param num_items number of items to be copied (!not number of bytes!) */
+* @param d destination buffer
+* @param s source buffer
+* @param num_items number of items to be copied (!not number of bytes!) */
 template <class Titem_>
-FORCEINLINE void MemCpyT(Titem_* d, const Titem_* s, int num_items = 1)
+FORCEINLINE void MemCpyT(Titem_* d, const Titem_* s, size_t num_items = 1)
 {
 	memcpy(d, s, num_items * sizeof(Titem_));
 }
 
 
 /** Base class for simple binary blobs.
- *  Item is byte.
- *  The word 'simple' means:
- *    - no configurable allocator type (always made from heap)
- *    - no smart deallocation - deallocation must be called from the same
- *        module (DLL) where the blob was allocated
- *    - no configurable allocation policy (how big blocks should be allocated)
- *    - no extra ownership policy (i.e. 'copy on write') when blob is copied
- *    - no thread synchronization at all
- *
- *  Internal member layout:
- *  1. The only class member is pointer to the first item (see union ptr_u).
- *  2. Allocated block contains the blob header (see CHdr) followed by the raw byte data.
- *     Always, when it allocates memory the allocated size is:
- *                                                      sizeof(CHdr) + <data capacity>
- *  3. Two 'virtual' members (m_size and m_max_size) are stored in the CHdr at beginning
- *     of the alloated block.
- *  4. The pointer (in ptr_u) points behind the header (to the first data byte).
- *     When memory block is allocated, the sizeof(CHdr) it added to it.
- *  5. Benefits of this layout:
- *     - items are accessed in the simplest possible way - just dereferencing the pointer,
- *       which is good for performance (assuming that data are accessed most often).
- *     - sizeof(blob) is the same as the size of any other pointer
- *  6. Drawbacks of this layout:
- *     - the fact, that pointer to the alocated block is adjusted by sizeof(CHdr) before
- *       it is stored can lead to several confusions:
- *         - it is not common pattern so the implementation code is bit harder to read
- *         - valgrind can generate warning that allocated block is lost (not accessible)
- * */
+*  Item is byte.
+*  The word 'simple' means:
+*    - no configurable allocator type (always made from heap)
+*    - no smart deallocation - deallocation must be called from the same
+*        module (DLL) where the blob was allocated
+*    - no configurable allocation policy (how big blocks should be allocated)
+*    - no extra ownership policy (i.e. 'copy on write') when blob is copied
+*    - no thread synchronization at all
+*
+*  Internal member layout:
+*  1. The only class member is posize_ter to the first item (see union ptr_u).
+*  2. Allocated block contains the blob header (see CHdr) followed by the raw byte data.
+*     Always, when it allocates memory the allocated size is:
+*                                                      sizeof(CHdr) + <data capacity>
+*  3. Two 'virtual' members (m_size and m_max_size) are stored in the CHdr at beginning
+*     of the alloated block.
+*  4. The posize_ter (in ptr_u) posize_ts behind the header (to the first data byte).
+*     When memory block is allocated, the sizeof(CHdr) it added to it.
+*  5. Benefits of this layout:
+*     - items are accessed in the simplest possible way - just dereferencing the posize_ter,
+*       which is good for performance (assuming that data are accessed most often).
+*     - sizeof(blob) is the same as the size of any other posize_ter
+*  6. Drawbacks of this layout:
+*     - the fact, that posize_ter to the alocated block is adjusted by sizeof(CHdr) before
+*       it is stored can lead to several confusions:
+*         - it is not common pattern so the implementation code is bit harder to read
+*         - valgrind can generate warning that allocated block is lost (not accessible)
+* */
 class CBlobBaseSimple {
+public:
+	typedef ::ptrdiff_t size_t;
 protected:
 	/** header of the allocated memory block */
 	struct CHdr {
-		int    m_size;      ///< actual blob size in bytes
-		int    m_max_size;  ///< maximum (allocated) size in bytes
+		size_t    m_size;      ///< actual blob size in bytes
+		size_t    m_max_size;  ///< maximum (allocated) size in bytes
 	};
 
 	/** type used as class member */
 	union {
-		int8   *m_pData;    ///< pointer to the first byte of data
-		CHdr   *m_pHdr_1;   ///< pointer just after the CHdr holding m_size and m_max_size
+		int8    *m_pData;    ///< ptr to the first byte of data
+		wchar_t *m_pwData;   ///< ptr to the first byte of data
+		CHdr    *m_pHdr_1;   ///< ptr just after the CHdr holding m_size and m_max_size
 	} ptr_u;
 
 public:
-	static const int Ttail_reserve = 4; ///< four extra bytes will be always allocated and zeroed at the end
+	static const size_t Ttail_reserve = 4; ///< four extra bytes will be always allocated and zeroed at the end
 
 	/** default constructor - initializes empty blob */
 	FORCEINLINE CBlobBaseSimple() { InitEmpty(); }
+	/** constructor - create blob with data */
+	FORCEINLINE CBlobBaseSimple(const int8 *p, size_t num_bytes) { InitEmpty(); AppendRaw(p, num_bytes);}
 	/** copy constructor */
 	FORCEINLINE CBlobBaseSimple(const CBlobBaseSimple& src)
 	{
 		InitEmpty();
 		AppendRaw(src);
 	}
+	/** move constructor - take ownership of blob data */
+	FORCEINLINE CBlobBaseSimple(CHdr*& pHdr_1) {assert(pHdr_1 != NULL); ptr_u.m_pHdr_1 = pHdr_1; pHdr_1 = NULL;}
 	/** destructor */
 	FORCEINLINE ~CBlobBaseSimple() { Free(); }
 protected:
-	/** initialize the empty blob by setting the ptr_u.m_pHdr_1 pointer to the static CHdr with
-	 *  both m_size and m_max_size containing zero */
+	/** initialize the empty blob by setting the ptr_u.m_pHdr_1 posize_ter to the static CHdr with
+	*  both m_size and m_max_size containing zero */
 	FORCEINLINE void InitEmpty() { static CHdr hdrEmpty[] = {{0, 0}, {0, 0}}; ptr_u.m_pHdr_1 = &hdrEmpty[1]; }
 	/** initialize blob by attaching it to the given header followed by data */
 	FORCEINLINE void Init(CHdr* hdr) { ptr_u.m_pHdr_1 = &hdr[1]; }
-	/** blob header accessor - use it rather than using the pointer arithmetics directly - non-const version */
+	/** blob header accessor - use it rather than using the posize_ter arithmetics directly - non-const version */
 	FORCEINLINE CHdr& Hdr() { return ptr_u.m_pHdr_1[-1]; }
-	/** blob header accessor - use it rather than using the pointer arithmetics directly - const version */
+	/** blob header accessor - use it rather than using the posize_ter arithmetics directly - const version */
 	FORCEINLINE const CHdr& Hdr() const { return ptr_u.m_pHdr_1[-1]; }
 	/** return reference to the actual blob size - used when the size needs to be modified */
-	FORCEINLINE int& RawSizeRef() { return Hdr().m_size; };
+	FORCEINLINE size_t& RawSizeRef() { return Hdr().m_size; };
 
 public:
 	/** return true if blob doesn't contain valid data */
 	FORCEINLINE bool IsEmpty() const { return RawSize() == 0; }
 	/** return the number of valid data bytes in the blob */
-	FORCEINLINE int RawSize() const { return Hdr().m_size; };
+	FORCEINLINE size_t RawSize() const { return Hdr().m_size; };
 	/** return the current blob capacity in bytes */
-	FORCEINLINE int MaxRawSize() const { return Hdr().m_max_size; };
-	/** return pointer to the first byte of data - non-const version */
+	FORCEINLINE size_t MaxRawSize() const { return Hdr().m_max_size; };
+	/** return posize_ter to the first byte of data - non-const version */
 	FORCEINLINE int8* RawData() { return ptr_u.m_pData; }
-	/** return pointer to the first byte of data - const version */
+	/** return posize_ter to the first byte of data - const version */
 	FORCEINLINE const int8* RawData() const { return ptr_u.m_pData; }
 #if 0 // reenable when needed
 	/** return the 32 bit CRC of valid data in the blob */
-	FORCEINLINE uint32 Crc32() const {return CCrc32::Calc(RawData(), RawSize());}
+	FORCEINLINE usize_t32 Crc32() const {return CCrc32::Calc(RawData(), RawSize());}
 #endif //0
 	/** invalidate blob's data - doesn't free buffer */
 	FORCEINLINE void Clear() { RawSizeRef() = 0; }
@@ -110,7 +117,7 @@
 	FORCEINLINE void Swap(CBlobBaseSimple& src) { int8 *tmp = ptr_u.m_pData; ptr_u.m_pData = src.ptr_u.m_pData; src.ptr_u.m_pData = tmp; }
 
 	/** append new bytes at the end of existing data bytes - reallocates if necessary */
-	FORCEINLINE void AppendRaw(int8 *p, int num_bytes)
+	FORCEINLINE void AppendRaw(const int8 *p, size_t num_bytes)
 	{
 		assert(p != NULL);
 		if (num_bytes > 0) {
@@ -128,19 +135,18 @@
 	}
 
 	/** Reallocate if there is no free space for num_bytes bytes.
-	 *  @return pointer to the new data to be added */
-	FORCEINLINE int8* MakeRawFreeSpace(int num_bytes)
+	*  @return posize_ter to the new data to be added */
+	FORCEINLINE int8* MakeRawFreeSpace(size_t num_bytes)
 	{
 		assert(num_bytes >= 0);
-		int new_size = RawSize() + num_bytes;
+		size_t new_size = RawSize() + num_bytes;
 		if (new_size > MaxRawSize()) SmartAlloc(new_size);
-		FixTail();
 		return ptr_u.m_pData + RawSize();
 	}
 
 	/** Increase RawSize() by num_bytes.
-	 *  @return pointer to the new data added */
-	FORCEINLINE int8* GrowRawSize(int num_bytes)
+	*  @return posize_ter to the new data added */
+	FORCEINLINE int8* GrowRawSize(size_t num_bytes)
 	{
 		int8* pNewData = MakeRawFreeSpace(num_bytes);
 		RawSizeRef() += num_bytes;
@@ -148,7 +154,7 @@
 	}
 
 	/** Decrease RawSize() by num_bytes. */
-	FORCEINLINE void ReduceRawSize(int num_bytes)
+	FORCEINLINE void ReduceRawSize(size_t num_bytes)
 	{
 		if (MaxRawSize() > 0 && num_bytes > 0) {
 			assert(num_bytes <= RawSize());
@@ -157,14 +163,14 @@
 		}
 	}
 	/** reallocate blob data if needed */
-	void SmartAlloc(int new_size)
+	void SmartAlloc(size_t new_size)
 	{
-		int old_max_size = MaxRawSize();
+		size_t old_max_size = MaxRawSize();
 		if (old_max_size >= new_size) return;
 		// calculate minimum block size we need to allocate
-		int min_alloc_size = sizeof(CHdr) + new_size + Ttail_reserve;
+		size_t min_alloc_size = sizeof(CHdr) + new_size + Ttail_reserve;
 		// ask allocation policy for some reasonable block size
-		int alloc_size = AllocPolicy(min_alloc_size);
+		size_t alloc_size = AllocPolicy(min_alloc_size);
 		// allocate new block
 		CHdr* pNewHdr = RawAlloc(alloc_size);
 		// setup header
@@ -180,7 +186,7 @@
 			RawFree(pOldHdr);
 	}
 	/** simple allocation policy - can be optimized later */
-	FORCEINLINE static int AllocPolicy(int min_alloc)
+	FORCEINLINE static size_t AllocPolicy(size_t min_alloc)
 	{
 		if (min_alloc < (1 << 9)) {
 			if (min_alloc < (1 << 5)) return (1 << 5);
@@ -199,58 +205,73 @@
 	}
 
 	/** all allocation should happen here */
-	static FORCEINLINE CHdr* RawAlloc(int num_bytes) { return (CHdr*)malloc(num_bytes); }
+	static FORCEINLINE CHdr* RawAlloc(size_t num_bytes) { return (CHdr*)malloc(num_bytes); }
 	/** all deallocations should happen here */
 	static FORCEINLINE void RawFree(CHdr* p) { free(p); }
 	/** fixing the four bytes at the end of blob data - useful when blob is used to hold string */
-	FORCEINLINE void FixTail()
+	FORCEINLINE void FixTail() const
 	{
 		if (MaxRawSize() > 0) {
 			int8 *p = &ptr_u.m_pData[RawSize()];
-			for (int i = 0; i < Ttail_reserve; i++) p[i] = 0;
+			for (size_t i = 0; i < Ttail_reserve; i++) p[i] = 0;
 		}
 	}
 };
 
 /** Blob - simple dynamic Titem_ array. Titem_ (template argument) is a placeholder for any type.
- *  Titem_ can be any integral type, pointer, or structure. Using Blob instead of just plain C array
- *  simplifies the resource management in several ways:
- *  1. When adding new item(s) it automatically grows capacity if needed.
- *  2. When variable of type Blob comes out of scope it automatically frees the data buffer.
- *  3. Takes care about the actual data size (number of used items).
- *  4. Dynamically constructs only used items (as opposite of static array which constructs all items) */
+*  Titem_ can be any size_tegral type, posize_ter, or structure. Using Blob instead of just plain C array
+*  simplifies the resource management in several ways:
+*  1. When adding new item(s) it automatically grows capacity if needed.
+*  2. When variable of type Blob comes out of scope it automatically frees the data buffer.
+*  3. Takes care about the actual data size (number of used items).
+*  4. Dynamically constructs only used items (as opposite of static array which constructs all items) */
 template <class Titem_, class Tbase_ = CBlobBaseSimple>
-class CBlobT : public CBlobBaseSimple {
+class CBlobT : public Tbase_ {
 	// make template arguments public:
 public:
 	typedef Titem_ Titem;
 	typedef Tbase_ Tbase;
 
-	static const int Titem_size = sizeof(Titem);
+	static const size_t Titem_size = sizeof(Titem);
+
+	struct OnTransfer {
+		typename Tbase_::CHdr *m_pHdr_1;
+		OnTransfer(OnTransfer& src) : m_pHdr_1(src.m_pHdr_1) {assert(src.m_pHdr_1 != NULL); src.m_pHdr_1 = NULL;}
+		OnTransfer(CBlobT& src) : m_pHdr_1(src.ptr_u.m_pHdr_1) {src.InitEmpty();}
+		~OnTransfer() {assert(m_pHdr_1 == NULL);}
+	};
 
 	/** Default constructor - makes new Blob ready to accept any data */
 	FORCEINLINE CBlobT() : Tbase() {}
+	/** Constructor - makes new Blob with data */
+	FORCEINLINE CBlobT(const Titem_ *p, size_t num_items) : Tbase((int8*)p, num_items * Titem_size) {}
 	/** Copy constructor - make new blob to become copy of the original (source) blob */
 	FORCEINLINE CBlobT(const Tbase& src) : Tbase(src) {assert((RawSize() % Titem_size) == 0);}
+	/** Take ownership constructor */
+	FORCEINLINE CBlobT(OnTransfer& ot) : Tbase(ot.m_pHdr_1) {}
 	/** Destructor - ensures that allocated memory (if any) is freed */
 	FORCEINLINE ~CBlobT() { Free(); }
 	/** Check the validity of item index (only in debug mode) */
-	FORCEINLINE void CheckIdx(int idx) { assert(idx >= 0); assert(idx < Size()); }
-	/** Return pointer to the first data item - non-const version */
+	FORCEINLINE void CheckIdx(size_t idx) { assert(idx >= 0); assert(idx < Size()); }
+	/** Return posize_ter to the first data item - non-const version */
 	FORCEINLINE Titem* Data() { return (Titem*)RawData(); }
-	/** Return pointer to the first data item - const version */
+	/** Return posize_ter to the first data item - const version */
 	FORCEINLINE const Titem* Data() const { return (const Titem*)RawData(); }
-	/** Return pointer to the idx-th data item - non-const version */
-	FORCEINLINE Titem* Data(int idx) { CheckIdx(idx); return (Data() + idx); }
-	/** Return pointer to the idx-th data item - const version */
-	FORCEINLINE const Titem* Data(int idx) const { CheckIdx(idx); return (Data() + idx); }
+	/** Return posize_ter to the idx-th data item - non-const version */
+	FORCEINLINE Titem* Data(size_t idx) { CheckIdx(idx); return (Data() + idx); }
+	/** Return posize_ter to the idx-th data item - const version */
+	FORCEINLINE const Titem* Data(size_t idx) const { CheckIdx(idx); return (Data() + idx); }
 	/** Return number of items in the Blob */
-	FORCEINLINE int Size() const { return (RawSize() / Titem_size); }
+	FORCEINLINE size_t Size() const { return (RawSize() / Titem_size); }
+	/** Return total number of items that can fit in the Blob without buffer reallocation */
+	FORCEINLINE size_t MaxSize() const { return (MaxRawSize() / Titem_size); }
+	/** Return number of additional items that can fit in the Blob without buffer reallocation */
+	FORCEINLINE size_t GetReserve() const { return ((MaxRawSize() - RawSize()) / Titem_size); }
 	/** Free the memory occupied by Blob destroying all items */
 	FORCEINLINE void Free()
 	{
 		assert((RawSize() % Titem_size) == 0);
-		int old_size = Size();
+		size_t old_size = Size();
 		if (old_size > 0) {
 			// destroy removed items;
 			Titem* pI_last_to_destroy = Data(0);
@@ -259,20 +280,20 @@
 		Tbase::Free();
 	}
 	/** Grow number of data items in Blob by given number - doesn't construct items */
-	FORCEINLINE Titem* GrowSizeNC(int num_items) { return (Titem*)GrowRawSize(num_items * Titem_size); }
+	FORCEINLINE Titem* GrowSizeNC(size_t num_items) { return (Titem*)GrowRawSize(num_items * Titem_size); }
 	/** Grow number of data items in Blob by given number - constructs new items (using Titem_'s default constructor) */
-	FORCEINLINE Titem* GrowSizeC(int num_items)
+	FORCEINLINE Titem* GrowSizeC(size_t num_items)
 	{
 		Titem* pI = GrowSizeNC(num_items);
-		for (int i = num_items; i > 0; i--, pI++) new (pI) Titem();
+		for (size_t i = num_items; i > 0; i--, pI++) new (pI) Titem();
 	}
 	/** Destroy given number of items and reduce the Blob's data size */
-	FORCEINLINE void ReduceSize(int num_items)
+	FORCEINLINE void ReduceSize(size_t num_items)
 	{
 		assert((RawSize() % Titem_size) == 0);
-		int old_size = Size();
+		size_t old_size = Size();
 		assert(num_items <= old_size);
-		int new_size = (num_items <= old_size) ? (old_size - num_items) : 0;
+		size_t new_size = (num_items <= old_size) ? (old_size - num_items) : 0;
 		// destroy removed items;
 		Titem* pI_last_to_destroy = Data(new_size);
 		for (Titem* pI = Data(old_size - 1); pI >= pI_last_to_destroy; pI--) pI->~Titem();
@@ -294,7 +315,7 @@
 		return pNewItem;
 	}
 	/** Add given items (ptr + number of items) at the end of blob */
-	FORCEINLINE Titem* Append(const Titem* pSrc, int num_items)
+	FORCEINLINE Titem* Append(const Titem* pSrc, size_t num_items)
 	{
 		Titem* pDst = GrowSizeNC(num_items);
 		Titem* pDstOrg = pDst;
@@ -303,14 +324,14 @@
 		return pDstOrg;
 	}
 	/** Remove item with the given index by replacing it by the last item and reducing the size by one */
-	FORCEINLINE void RemoveBySwap(int idx)
+	FORCEINLINE void RemoveBySwap(size_t idx)
 	{
 		CheckIdx(idx);
 		// destroy removed item
 		Titem* pRemoved = Data(idx);
 		RemoveBySwap(pRemoved);
 	}
-	/** Remove item given by pointer replacing it by the last item and reducing the size by one */
+	/** Remove item given by posize_ter replacing it by the last item and reducing the size by one */
 	FORCEINLINE void RemoveBySwap(Titem* pItem)
 	{
 		Titem* pLast = Data(Size() - 1);
@@ -325,18 +346,12 @@
 		// and reduce the raw blob size
 		ReduceRawSize(Titem_size);
 	}
-	/** Ensures that given number of items can be added to the end of Blob. Returns pointer to the
-	 *  first free (unused) item */
-	FORCEINLINE Titem* MakeFreeSpace(int num_items) { return (Titem*)MakeRawFreeSpace(num_items * Titem_size); }
+	/** Ensures that given number of items can be added to the end of Blob. Returns posize_ter to the
+	*  first free (unused) item */
+	FORCEINLINE Titem* MakeFreeSpace(size_t num_items) { return (Titem*)MakeRawFreeSpace(num_items * Titem_size); }
+
+	FORCEINLINE OnTransfer Transfer() {return OnTransfer(*this);};
 };
 
-// simple string implementation
-struct CStrA : public CBlobT<char>
-{
-	typedef CBlobT<char> base;
-	CStrA(const char* str = NULL) {Append(str);}
-	FORCEINLINE CStrA(const CBlobBaseSimple& src) : base(src) {}
-	void Append(const char* str) {if (str != NULL && str[0] != '\0') base::Append(str, (int)strlen(str));}
-};
 
 #endif /* BLOB_HPP */
diff -r d6197e6c420e -r 0570ae953222 yapf/follow_track.hpp
--- a/yapf/follow_track.hpp	Sun Dec 31 18:03:21 2006 +0000
+++ b/yapf/follow_track.hpp	Sun Dec 31 21:13:40 2006 +0000
@@ -29,6 +29,7 @@
 		m_exitdir = INVALID_DIAGDIR;
 		m_is_station = m_is_bridge = m_is_tunnel = false;
 		m_tiles_skipped = 0;
+		m_intermediate_trackdir = INVALID_TRACKDIR;
 	}
 
 	FORCEINLINE static TransportType TT() {return Ttr_type_;}
@@ -50,7 +51,7 @@
 		FollowTileExit();
 		if (!QueryNewTileTrackStatus()) return TryReverse();
 		m_new_td_bits &= DiagdirReachesTrackdirs(m_exitdir);
-		if (!Allow90degTurns())
+		if (!Allow90degTurns() && m_tiles_skipped == 0)
 			m_new_td_bits &= (TrackdirBits)~(int)TrackdirCrossesTrackdirs(m_old_td);
 		if (m_new_td_bits == TRACKDIR_BIT_NONE) return false;
 		if (!CanEnterNewTile()) return false;
@@ -87,6 +88,7 @@
 				uint32 bridge_length = GetBridgeLength(m_old_tile, m_new_tile);
 				m_tiles_skipped = bridge_length;
 				m_is_bridge = true;
+				if (m_tiles_skipped > 0) m_intermediate_trackdir = DiagdirToDiagTrackdir(bridge_enterdir);
 				return;
 			}
 		}
diff -r d6197e6c420e -r 0570ae953222 yapf/str.hpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/yapf/str.hpp	Sun Dec 31 21:13:40 2006 +0000
@@ -0,0 +1,66 @@
+/* $Id$ */
+
+#ifndef  STR_HPP
+#define  STR_HPP
+
+#include <errno.h>
+
+#include "blob.hpp"
+#include "strapi.hpp"
+
+
+// simple string implementation
+template <typename Tchar, bool TcaseInsensitive>
+struct CStrT : public CBlobT<Tchar>
+{
+	typedef CBlobT<Tchar> base;
+	typedef CStrApiT<Tchar, TcaseInsensitive> Api;
+
+	FORCEINLINE CStrT(const Tchar* str = NULL) {AppendStr(str);}
+	FORCEINLINE CStrT(const Tchar* str, size_t num_chars) : base(str, num_chars) {FixTail();}
+	FORCEINLINE CStrT(const Tchar* str, const Tchar* end) : base(str, end - str) {FixTail();}
+	FORCEINLINE CStrT(const CBlobBaseSimple& src) : base(src) {FixTail();}
+	/** Take ownership constructor */
+	FORCEINLINE CStrT(OnTransfer& ot) : base(ot) {}
+	FORCEINLINE Titem* GrowSizeNC(size_t count) {Titem* ret = base::GrowSizeNC(count); FixTail(); return ret;}
+	FORCEINLINE void AppendStr(const Tchar* str) {if (str != NULL && str[0] != '\0') base::Append(str, (size_t)Api::StrLen(str)); FixTail();}
+	FORCEINLINE CStrT& operator = (const Tchar* src) {Clear(); Append(src); return *this;}
+	FORCEINLINE bool operator < (const CStrT &other) const {return (Api::StrCmp(Data(), other.Data()) < 0);}
+
+	int FormatL(const Tchar *fmt, va_list args)
+	{
+		size_t addSize = Api::StrLen(fmt);
+		if (addSize < 16) addSize = 16;
+		addSize += addSize > 1;
+		int ret;
+		do {
+			Tchar *buf = MakeFreeSpace(addSize);
+			ret = Api::SPrintFL(buf, GetReserve(), fmt, args);
+			addSize *= 2;
+		} while(ret < 0 && (errno == ERANGE || errno == 0));
+		if (ret > 0) {
+			GrowSizeNC(ret);
+		} else {
+			int err = errno;
+			FixTail();
+		}
+		return ret;
+	}
+
+	int Format(const Tchar *format, ...)
+	{
+		va_list args;
+		va_start(args, format);
+		int ret = FormatL(format, args);
+		va_end(args);
+		return ret;
+	}
+
+};
+
+typedef CStrT<char   , false> CStrA;
+typedef CStrT<char   , true > CStrCiA;
+typedef CStrT<wchar_t, false> CStrW;
+typedef CStrT<wchar_t, true > CStrCiW;
+
+#endif /* STR_HPP */
diff -r d6197e6c420e -r 0570ae953222 yapf/strapi.hpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/yapf/strapi.hpp	Sun Dec 31 21:13:40 2006 +0000
@@ -0,0 +1,82 @@
+/* $Id$ */
+
+#ifndef  STRAPI_HPP
+#define  STRAPI_HPP
+
+#include <string.h>
+
+/** String API mapper base - just mapping by character type, not by case sensitivity yet.
+	* Class template CStrApiBaseT declaration is general, but following inline method
+	* definitions are specialized by character type. Class is not used directly, but only
+	* as a base class for template class CStrApiT */
+template <typename Tchar>
+class CStrApiBaseT
+{
+public:
+	/** ::strlen wrapper */
+	static size_t StrLen(const Tchar *s);
+	static int SPrintFL(Tchar *buf, size_t count, const Tchar *fmt, va_list args);
+};
+
+/** ::strlen wrapper specialization for char */
+template <> /*static*/ inline size_t CStrApiBaseT<char>::StrLen(const char *s)
+{
+	return ::strlen(s);
+}
+
+/** ::strlen wrapper specialization for wchar_t */
+template <> /*static*/ inline size_t CStrApiBaseT<wchar_t>::StrLen(const wchar_t *s)
+{
+	return ::wcslen(s);
+}
+
+/** ::vsprintf wrapper specialization for char */
+template <> /*static*/ inline int CStrApiBaseT<char>::SPrintFL(char *buf, size_t count, const char *fmt, va_list args)
+{
+#if defined(_MSC_VER) && (_MSC_VER >= 1400) // VC 8.0 and above
+	return ::vsnprintf_s(buf, count, count - 1, fmt, args);
+#else // ! VC 8.0 and above
+	return ::vsnprintf(buf, count, fmt, args);
+#endif
+}
+
+/** ::vsprintf wrapper specialization for wchar_t */
+template <> /*static*/ inline int CStrApiBaseT<wchar_t>::SPrintFL(wchar_t *buf, size_t count, const wchar_t *fmt, va_list args)
+{
+#if defined(_MSC_VER) && (_MSC_VER >= 1400) // VC 8.0 and above
+	return ::_vsnwprintf_s(buf, count, count - 1, fmt, args);
+#else // ! VC 8.0 and above
+	return ::vswprintf(buf, count, fmt, args);
+#endif
+}
+
+
+
+template <typename Tchar, bool TcaseInsensitive>
+class CStrApiT : public CStrApiBaseT<Tchar>
+{
+public:
+	static int StrCmp(const Tchar *s1, const Tchar *s2);
+};
+
+template <> /*static*/ inline int CStrApiT<char, false>::StrCmp(const char *s1, const char *s2)
+{
+	return ::strcmp(s1, s2);
+}
+
+template <> /*static*/ inline int CStrApiT<char, true>::StrCmp(const char *s1, const char *s2)
+{
+	return ::_stricmp(s1, s2);
+}
+
+template <> /*static*/ inline int CStrApiT<wchar_t, false>::StrCmp(const wchar_t *s1, const wchar_t *s2)
+{
+	return ::wcscmp(s1, s2);
+}
+
+template <> /*static*/ inline int CStrApiT<wchar_t, true>::StrCmp(const wchar_t *s1, const wchar_t *s2)
+{
+	return ::_wcsicmp(s1, s2);
+}
+
+#endif /* STRAPI_HPP */
diff -r d6197e6c420e -r 0570ae953222 yapf/yapf.h
--- a/yapf/yapf.h	Sun Dec 31 18:03:21 2006 +0000
+++ b/yapf/yapf.h	Sun Dec 31 21:13:40 2006 +0000
@@ -98,6 +98,7 @@
 	bool                m_is_bridge;     ///< last turn passed bridge ramp
 	bool                m_is_station;    ///< last turn passed station
 	int                 m_tiles_skipped; ///< number of skipped tunnel or station tiles
+	Trackdir            m_intermediate_trackdir; ///< when some bridge tiles are skipped, contains direction of the bridge
 } FollowTrack_t;
 
 /** Initializes FollowTrack_t structure */
diff -r d6197e6c420e -r 0570ae953222 yapf/yapf.hpp
--- a/yapf/yapf.hpp	Sun Dec 31 18:03:21 2006 +0000
+++ b/yapf/yapf.hpp	Sun Dec 31 21:13:40 2006 +0000
@@ -71,12 +71,16 @@
 
 typedef CPerfStartFake CPerfStart;
 
+#include "crc32.hpp"
+#include "blob.hpp"
+#include "str.hpp"
+
+const char* GetTrackdirName(Trackdir td);
+CStrA GetTrackdirBitsName(TrackdirBits td_bits);
 
 //#undef FORCEINLINE
 //#define FORCEINLINE inline
 
-#include "crc32.hpp"
-#include "blob.hpp"
 #include "fixedsizearray.hpp"
 #include "array.hpp"
 #include "hashtable.hpp"
diff -r d6197e6c420e -r 0570ae953222 yapf/yapf_common.cpp
--- a/yapf/yapf_common.cpp	Sun Dec 31 18:03:21 2006 +0000
+++ b/yapf/yapf_common.cpp	Sun Dec 31 21:13:40 2006 +0000
@@ -27,3 +27,39 @@
 	TRACKDIR_BIT_NONE                    , //14
 	TRACKDIR_BIT_NONE                    , //15
 };
+
+const char* GetTrackdirName(Trackdir td)
+{
+	static const char * const td_names[] = {
+		"INVALID_TRACKDIR",
+		"X_NE",
+		"Y_SE",
+		"UPPER_E",
+		"LOWER_E",
+		"LEFT_S",
+		"RIGHT_S",
+		"<6>",
+		"<7>",
+		"X_SW",
+		"Y_NW",
+		"UPPER_W",
+		"LOWER_W",
+		"LEFT_N",
+		"RIGHT_N",
+		"TRACKDIR_END"
+	};
+	if (((int)td <= (int)TRACKDIR_END)) {
+		int idx = ((int8)td) + 1;
+		return td_names[idx];
+	}
+	return "<invalid value>";
+}
+
+CStrA GetTrackdirBitsName(TrackdirBits td_bits)
+{
+	CStrA name;
+	for(int tdb = td_bits; tdb != 0; tdb = KillFirstBit2x64(tdb)) {
+		name.Format("%s%s", name.Size() > 0 ? "+" : "", GetTrackdirName((Trackdir)FindFirstBit2x64(tdb)));
+	}
+	return name.Transfer();
+}
diff -r d6197e6c420e -r 0570ae953222 yapf/yapf_costrail.hpp
--- a/yapf/yapf_costrail.hpp	Sun Dec 31 18:03:21 2006 +0000
+++ b/yapf/yapf_costrail.hpp	Sun Dec 31 21:13:40 2006 +0000
@@ -189,38 +189,58 @@
 		Trackdir trackdir = n.m_key.m_td;
 		TileType tile_type = GetTileType(tile);
 
+		DEBUG(yapf, 3, "PfCalcCost(Node:tile=%04X td=%s; Parent:tile=%04X td=%s)", tile, GetTrackdirName(trackdir), prev_tile, GetTrackdirName(prev_trackdir));
+
 		RailType rail_type = GetTileRailType(tile, trackdir);
 
 		// detect exit from bridge wormhole
+		Trackdir intermediate_trackdir = INVALID_TRACKDIR;
 		if (IsBridgeTile(tile) && TrackdirToExitdir(ReverseTrackdir(trackdir)) == GetBridgeRampDirection(tile)) {
 			// we are jumping over bridge (possible now with custom bridge heads) we must add the cost of skipped tiles
-			segment_cost += (DistanceManhattan(prev_tile, tile) - 1) * YAPF_TILE_LENGTH;
+			int skipped_tiles = DistanceManhattan(prev_tile, tile) - 1;
+			if (skipped_tiles > 0) {
+				segment_cost += skipped_tiles * YAPF_TILE_LENGTH;
+				DEBUG(yapf, 6, "    Cost: skipped=%d", skipped_tiles * YAPF_TILE_LENGTH);
+				intermediate_trackdir = DiagdirToDiagTrackdir(ReverseDiagDir(GetBridgeRampDirection(tile)));
+			}
 		}
 
 		bool target_seen = Yapf().PfDetectDestination(tile, trackdir);
 
 		while (true) {
-			segment_cost += Yapf().OneTileCost(tile, trackdir);
-			segment_cost += Yapf().CurveCost(prev_trackdir, trackdir);
-			segment_cost += Yapf().SlopeCost(tile, trackdir);
-			segment_cost += Yapf().SignalCost(n, tile, trackdir);
+			int tile_cost = Yapf().OneTileCost(tile, trackdir);
+			int curve_cost;
+			if (intermediate_trackdir == INVALID_TRACKDIR) {
+				curve_cost = Yapf().CurveCost(prev_trackdir, trackdir);
+			} else {
+				curve_cost = Yapf().CurveCost(prev_trackdir, intermediate_trackdir) + Yapf().CurveCost(intermediate_trackdir, trackdir);
+				intermediate_trackdir = INVALID_TRACKDIR;
+			}
+			int slope_cost = Yapf().SlopeCost(tile, trackdir);
+			int signal_cost = Yapf().SignalCost(n, tile, trackdir);
+			DEBUG(yapf, 6, "    Cost: tile=%d, curve=%d, slope=%d, signal=%d", tile_cost, curve_cost, slope_cost, signal_cost);
+			segment_cost += tile_cost + curve_cost + slope_cost + signal_cost;
 			if (n.m_segment->flags_u.flags_s.m_end_of_line) {
+				DEBUG(yapf, 4, "  end: EOL (signal)");
 				break;
 			}
 
 			// finish if we have reached the destination
 			if (target_seen) {
+				DEBUG(yapf, 4, "  end: target_seen");
 				break;
 			}
 
 			// finish on first station tile - segment should end here to avoid target skipping
 			// when cached segments are used
 			if (tile_type == MP_STATION && prev_tile_type != MP_STATION) {
+				DEBUG(yapf, 4, "  end: first station tile");
 				break;
 			}
 
 			// finish also on waypoint - same workaround as for first station tile
 			if (tile_type == MP_RAILWAY && IsRailWaypoint(tile)) {
+				DEBUG(yapf, 4, "  end: waypoint");
 				break;
 			}
 
@@ -229,11 +249,15 @@
 			if (!F.Follow(tile, trackdir)) {
 				// we can't continue?
 				// n.m_segment->flags_u.flags_s.m_end_of_line = true;
+				DEBUG(yapf, 4, "  end: can't foolow (dead end?)");
 				break;
 			}
+			if (F.m_is_bridge && F.m_tiles_skipped > 0) intermediate_trackdir = F.m_intermediate_trackdir;
+			DEBUG(yapf, 4, " next: tile=%04X td=%s", F.m_new_tile, GetTrackdirBitsName(F.m_new_td_bits).Data());
 
 			// if there are more trackdirs available & reachable, we are at the end of segment
 			if (KillFirstBit2x64(F.m_new_td_bits) != 0) {
+				DEBUG(yapf, 4, "  end: choice");
 				break;
 			}
 
@@ -242,18 +266,23 @@
 			{
 				// end segment if train is about to enter simple loop with no junctions
 				// so next time it should stop on the next if
-				if (segment_cost > s_max_segment_cost && IsTileType(F.m_new_tile, MP_RAILWAY))
+				if (segment_cost > s_max_segment_cost && IsTileType(F.m_new_tile, MP_RAILWAY)) {
+					DEBUG(yapf, 4, "  end: loop fuse");
 					break;
+				}
 
 				// stop if train is on simple loop with no junctions
-				if (F.m_new_tile == n.m_key.m_tile && new_td == n.m_key.m_td)
+				if (F.m_new_tile == n.m_key.m_tile && new_td == n.m_key.m_td) {
+					DEBUG(yapf, 4, "  end: loop detected");
 					return false;
+				}
 			}
 
-			// if tail type changes, finish segment (cached segment can't contain more rail types)
+			// if rail type changes, finish segment (cached segment can't contain more rail types)
 			{
 				RailType new_rail_type = GetTileRailType(F.m_new_tile, (Trackdir)FindFirstBit2x64(F.m_new_td_bits));
 				if (new_rail_type != rail_type) {
+					DEBUG(yapf, 4, "  end: rail type changes");
 					break;
 				}
 				rail_type = new_rail_type;
@@ -272,12 +301,15 @@
 
 			// reversing in depot penalty
 			if (tile == prev_tile) {
-				segment_cost += Yapf().PfGetSettings().rail_depot_reverse_penalty;
+				int reverse_in_depot_cost = Yapf().PfGetSettings().rail_depot_reverse_penalty;
+				segment_cost += reverse_in_depot_cost;
+				DEBUG(yapf, 4, "  end: reversing in depot (cost=%d)", reverse_in_depot_cost);
 				break;
 			}
 
 			// if we skipped some tunnel tiles, add their cost
 			segment_cost += YAPF_TILE_LENGTH * F.m_tiles_skipped;
+			DEBUG(yapf, 6, "    Cost: wormhole=%d", YAPF_TILE_LENGTH * F.m_tiles_skipped);
 
 			// add penalty for skipped station tiles
 			if (F.m_is_station)
@@ -285,10 +317,14 @@
 				if (target_seen) {
 					// it is our destination station
 					uint platform_length = F.m_tiles_skipped + 1;
-					segment_cost += PlatformLengthPenalty(platform_length);
+					int platform_length_cost = PlatformLengthPenalty(platform_length);
+					segment_cost += platform_length_cost;
+					DEBUG(yapf, 6, "    Cost: platform=%d", platform_length_cost);
 				} else {
 					// station is not our destination station, apply penalty for skipped platform tiles
-					segment_cost += Yapf().PfGetSettings().rail_station_penalty * F.m_tiles_skipped;
+					int station_cost = Yapf().PfGetSettings().rail_station_penalty * F.m_tiles_skipped;
+					segment_cost += station_cost;
+					DEBUG(yapf, 6, "    Cost: station=%d", station_cost);
 				}
 			}
 
@@ -302,6 +338,7 @@
 
 			// finish if we already exceeded the maximum cost
 			if (m_max_cost > 0 && (parent_cost + first_tile_cost + segment_cost) > m_max_cost) {
+				DEBUG(yapf, 4, "  abort: maximum cost reached");
 				return false;
 			}
 
@@ -309,10 +346,12 @@
 				// we just have done first tile
 				first_tile_cost = segment_cost;
 				segment_cost = 0;
+				DEBUG(yapf, 5, "    TotalCost: first_tile=%d", first_tile_cost);
 
 				// look if we can reuse existing (cached) segment cost
 				if (n.m_segment->m_cost >= 0) {
 					// reuse the cached segment cost
+					DEBUG(yapf, 4, "  end: reusing the cached segment cost");
 					break;
 				}
 			}
@@ -325,15 +364,18 @@
 			// we have just finished first tile
 			first_tile_cost = segment_cost;
 			segment_cost = 0;
+			DEBUG(yapf, 5, "    TotalCost: first_tile=%d", first_tile_cost);
 		}
 
 		// do we have cached segment cost?
 		if (n.m_segment->m_cost >= 0) {
 			// reuse the cached segment cost
 			segment_cost = n.m_segment->m_cost;
+			DEBUG(yapf, 5, "    TotalCost: cached_segment=%d", segment_cost);
 		} else {
 			// save segment cost
 			n.m_segment->m_cost = segment_cost;
+			DEBUG(yapf, 5, "    TotalCost: segment=%d", segment_cost);
 
 			// save end of segment back to the node
 			n.SetLastTileTrackdir(tile, trackdir);
@@ -352,10 +394,12 @@
 				}
 			}
 		}
+		DEBUG(yapf, 5, "    TotalCost: extra=%d", extra_cost);
 
 		// total node cost
 		n.m_cost = parent_cost + first_tile_cost + segment_cost + extra_cost;
-
+		DEBUG(yapf, 3, "  leaving: last_tile=%04X, last_td=%s, cost=%d", n.m_segment->m_last_tile, GetTrackdirName(n.m_segment->m_last_td), n.m_cost);
+		DEBUG(yapf, 3, " returning %s", n.m_segment->flags_u.flags_s.m_end_of_line ? "false" : "true");
 		return !n.m_segment->flags_u.flags_s.m_end_of_line;
 	}