src/OtherFunctions.h

   1 //
   2 // This file is part of the aMule Project.
   3 //
   4 // Copyright (c) 2003-2008 aMule Team ( admin@amule.org / http://www.amule.org )
   5 // Copyright (c) 2002-2008 Merkur ( devs@emule-project.net / http://www.emule-project.net )
   6 //
   7 // Any parts of this program derived from the xMule, lMule or eMule project,
   8 // or contributed by third-party developers are copyrighted by their
   9 // respective authors.
  10 //
  11 // This program is free software; you can redistribute it and/or modify
  12 // it under the terms of the GNU General Public License as published by
  13 // the Free Software Foundation; either version 2 of the License, or
  14 // (at your option) any later version.
  15 //
  16 // This program is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 // GNU General Public License for more details.
  20 //
  21 // You should have received a copy of the GNU General Public License
  22 // along with this program; if not, write to the Free Software
  23 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  24 //
  25
  26 #ifndef OTHERFUNCTIONS_H
  27 #define OTHERFUNCTIONS_H
  28
  29 #include <wx/intl.h>            // Needed for wxLANGUAGE_ constants
  30
  31 #include "Types.h"              // Needed for uint16, uint32 and uint64
  32 #include "Preferences.h"        // Needed for AllCategoryFilter enumeration
  33
  34 #include <algorithm>            // Needed for std::for_each     // Do_not_auto_remove (mingw-gcc-3.4.5)
  35
  36
  37 class CPath;
  38
  39
  40 /**
  41  * Helper function.
  42  *
  43  * @param ArgA The base value.
  44  * @param ArgB The value to compare ArgA against.
  45  * @return See below.
  46  *
  47  * Use this function to safely compare two arguments of a type that supports
  48  * the "<" operator. It works like strcmp and returns a negative value if ArgA
  49  * is less than ArgB, zero if ArgA is equal to ArgB and a positive value if
  50  * ArgA is greater than ArgB.
  51  */
  52 template <class TYPE>
  53 int CmpAny(const TYPE& ArgA, const TYPE& ArgB)
  54 {
  55         if ( ArgA < ArgB ) {
  56                 return -1;
  57         } else if ( ArgB < ArgA ) {
  58                 return  1;
  59         } else {
  60                 return  0;
  61         }
  62 }
  63
  64 //! Overloaded version of CmpAny for use with wxStrings.
  65 inline int CmpAny(const wxString& ArgA, const wxString& ArgB)
  66 {
  67         if (ArgA.IsEmpty() && !ArgB.IsEmpty()) {
  68                 return -1;
  69         } else if (!ArgA.IsEmpty() && ArgB.IsEmpty()) {
  70                 return 1;
  71         } else if (ArgA.IsEmpty() && ArgB.IsEmpty()) {
  72                 return 0;
  73         } else {
  74                 return ArgA.CmpNoCase( ArgB );
  75         }
  76 }
  77
  78 //! Overloaded version of CmpAny for use with C-Strings (Unicoded).
  79 inline int CmpAny(const wxChar* ArgA, const wxChar* ArgB)
  80 {
  81         return CmpAny(wxString( ArgA ), wxString( ArgB ));
  82 }
  83
  84
  85 /**
  86  * Removes the first instance of a value from a STL-like list: list, vector or deque.
  87  *
  88  * @param list The list to manipulate.
  89  * @param item The value to search for and remove.
  90  * @return The number of instances removed.
  91  */
  92 template <typename LIST, typename ITEM>
  93 unsigned int EraseFirstValue( LIST& list, const ITEM& item )
  94 {
  95         typename LIST::iterator it = list.begin();
  96
  97         for (; it != list.end(); ++it) {
  98                 if (*it == item) {
  99                         list.erase(it);
 100
 101                         return true;
 102                 }
 103         }
 104
 105         return false;
 106 }
 107
 108
 109 /**
 110  * Removes all instances of a value from a STL-like list: list, vector or deque.
 111  *
 112  * @param list The list to manipulate.
 113  * @param item The value to search for and remove.
 114  * @return The number of instances removed.
 115  */
 116 template <typename LIST, typename ITEM>
 117 unsigned int EraseValue( LIST& list, const ITEM& item )
 118 {
 119         typename LIST::iterator it = list.begin();
 120         unsigned int count = 0;
 121
 122         for ( ; it != list.end(); ) {
 123                 if ( *it == item ) {
 124                         it = list.erase( it );
 125                         count++;
 126                 } else {
 127                         ++it;
 128                 }
 129         }
 130
 131         return count;
 132 }
 133
 134
 135 //! Used by DeleteContents
 136 struct SDoDelete
 137 {
 138         // Used for lists, vectors, deques, etc.
 139         template <typename TYPE>
 140         void operator()(TYPE* ptr) {
 141                 delete ptr;
 142         }
 143
 144         // Used for maps, hashmaps, rangemaps, etc.
 145         template <typename FIRST, typename SECOND>
 146         void operator()(const std::pair<FIRST, SECOND>& pair) {
 147                 delete pair.second;
 148         }
 149 };
 150
 151
 152 /** Frees the contents of a list or map like stl container, clearing it afterwards. */
 153 template <typename STL_CONTAINER>
 154 void DeleteContents(STL_CONTAINER& container)
 155 {
 156         // Ensure that the actual container wont contain dangling pointers during
 157         // this operation, to ensure that the destructors cant access them.
 158         STL_CONTAINER copy;
 159
 160         std::swap(copy, container);
 161         std::for_each(copy.begin(), copy.end(), SDoDelete());
 162 }
 163
 164
 165 /**
 166  * Copies elements from the range [first, first + n) to the range [result, result + n).
 167  */
 168 template <class InputIterator, class OutputIterator>
 169 OutputIterator STLCopy_n(InputIterator first, size_t n, OutputIterator result)
 170 {
 171         return std::copy(first, first + n, result);
 172 }
 173
 174
 175 /**
 176  * Returns a description of the version of aMule being used.
 177  *
 178  * @return A detailed description of the aMule version, including wx information.
 179  *
 180  * Use this rather than just using the VERSION or CURRENT_VERSION_LONG
 181  * constants, when displaying information to the user. The purpose is to
 182  * help with debugging.
 183  */
 184 wxString GetMuleVersion();
 185
 186
 187 /**
 188  * Helperfunction for accessing a child of the calling widget.
 189  *
 190  * @param IdOrName The ID or the Name of the widget to find.
 191  * @param type The widget-type to cast the found widget to.
 192  *
 193  * Use this function as a replacement for the following constructs:
 194  *  - wxStaticCast( FindWindow( <IdOrName> ), <type> )
 195  *  - (<type>*)FindWindow( <IdOrName> )
 196  *
 197  * It has the advantage of validating the cast in debug builds and being much
 198  * shorter than than manually typing wxStaticCast + FindWindow. This mean that
 199  * we will be alerted in case of widget changing type, instead of getting just
 200  * getting bad mojo due to casting a pointer to the wrong type.
 201  */
 202 #define CastChild( IdOrName, type )                     dynamic_cast<type*>( FindWindow( IdOrName ) )
 203
 204
 205 /**
 206  * Helperfunction for accessing the child of a any widget by ID.
 207  *
 208  * @param ID The ID of the widget to find.
 209  * @param parent The parent of the widget to find, or NULL to search from the top.
 210  * @param type The type to cast the widget to.
 211  *
 212  * @see CastChild()
 213  */
 214 #define CastByID( ID, parent, type )            dynamic_cast<type*>( wxWindow::FindWindowById( (ID), (parent) ) )
 215
 216
 217 /**
 218  * Helperfunction for accessing the child of a any widget by Name.
 219  *
 220  * @param Name The Name of the widget to find.
 221  * @param parent The parent of the widget to find, or NULL to search from the top.
 222  * @param type The type to cast the widget to.
 223  *
 224  * @see CastChild()
 225  */
 226 #define CastByName( Name, parent, type )        dynamic_cast<type*>( wxWindow::FindWindowByName( (Name), (parent) ) )
 227
 228
 229 // From Gnucleus project [found by Tarod]
 230 // Base16/Base32/Base64 Encode/Decode functions
 231 wxString EncodeBase16(const unsigned char* buffer, unsigned int bufLen);
 232 unsigned int DecodeBase16(const wxString &base16Buffer, unsigned int base16BufLen, unsigned char *buffer);
 233 wxString EncodeBase32(const unsigned char* buffer, unsigned int bufLen);
 234 unsigned int DecodeBase32(const wxString &base32Buffer, unsigned int base32BufLen, unsigned char *buffer);
 235 wxString EncodeBase64(const char* buffer, unsigned int bufLen);
 236 unsigned int DecodeBase64(const wxString &base64Buffer, unsigned int base64BufLen, unsigned char *buffer);
 237
 238 // Converts the number of bytes to human readable form.
 239 wxString CastItoXBytes(uint64 count);
 240 // Converts the number to human readable form, abbreviating when nessecary.
 241 wxString CastItoIShort(uint64 number);
 242 // Converts a number of bytes to a human readable speed value.
 243 wxString CastItoSpeed(uint32 bytes);
 244 // Converts an amount of seconds to human readable time.
 245 wxString CastSecondsToHM(uint32 seconds, uint16 msecs = 0);
 246 // Returns the amount of Bytes the provided size-type represents
 247 uint32 GetTypeSize(uint8 type);
 248 // Returns the string associated with a file-rating value.
 249 wxString GetRateString(uint16 rate);
 250
 251
 252 // The following functions are used to identify and/or name the type of a file
 253 enum FileType { ftAny, ftVideo, ftAudio, ftArchive, ftCDImage, ftPicture, ftText, ftProgram };
 254 // Examins a filename and returns the enumerated value assosiated with it, or ftAny if unknown extension
 255 FileType GetFiletype(const CPath& filename);
 256 // Returns the description of a filetype: Movies, Audio, Pictures and so on...
 257 wxString GetFiletypeDesc(FileType type, bool translated = true);
 258 // Shorthand for GetFiletypeDesc(GetFiletype(filename))
 259 wxString GetFiletypeByName(const CPath& filename, bool translated = true);
 260
 261
 262 // Returns the name associated with a category value.
 263 wxString GetCatTitle(AllCategoryFilter cat);
 264
 265 /* Other */
 266
 267
 268 //! Returns the number of items in an array.
 269 #define itemsof(x) (sizeof(x)/sizeof(x[0]))
 270
 271
 272 ///////////////////////////////////////////////////////////////////////////////
 273 // ED2K File Type
 274 //
 275
 276 enum EED2KFileType
 277 {
 278         ED2KFT_ANY,
 279         ED2KFT_AUDIO,
 280         ED2KFT_VIDEO,
 281         ED2KFT_IMAGE,
 282         ED2KFT_PROGRAM,
 283         ED2KFT_DOCUMENT,
 284         ED2KFT_ARCHIVE,
 285         ED2KFT_CDIMAGE
 286 };
 287
 288 class EED2KFileTypeClass
 289 {
 290 public:
 291         EED2KFileTypeClass()
 292         {
 293                 s_t = ED2KFT_ANY;
 294         }
 295         EED2KFileTypeClass(EED2KFileType t)
 296         {
 297                 s_t = t;
 298         }
 299         EED2KFileType GetType() const
 300         {
 301                 return s_t;
 302         }
 303
 304 private:
 305         EED2KFileType s_t;
 306 };
 307
 308 EED2KFileType GetED2KFileTypeID(const CPath& fileName);
 309 wxString GetED2KFileTypeSearchTerm(EED2KFileType iFileID);
 310 wxString GetFileTypeByName(const CPath& fileName);
 311 EED2KFileType GetED2KFileTypeSearchID(EED2KFileType iFileID);
 312 ///////////////////////////////////////////////////////////////////////////////
 313
 314 // md4cmp -- replacement for memcmp(hash1,hash2,16)
 315 // Like 'memcmp' this function returns 0, if hash1==hash2, and !0, if hash1!=hash2.
 316 // NOTE: Do *NOT* use that function for determining if hash1<hash2 or hash1>hash2.
 317 inline int md4cmp(const void* hash1, const void* hash2)
 318 {
 319         return memcmp(hash1, hash2, 16);
 320 }
 321
 322
 323 // md4clr -- replacement for memset(hash,0,16)
 324 inline void md4clr(void* hash)
 325 {
 326         memset(hash, 0, 16);
 327 }
 328
 329
 330 // md4cpy -- replacement for memcpy(dst,src,16)
 331 inline void md4cpy(void* dst, const void* src)
 332 {
 333         memcpy(dst, src, 16);
 334 }
 335
 336
 337 // DumpMem ... Dumps mem ;)
 338 wxString DumpMemToStr(const void *buff, int n, const wxString& msg = wxEmptyString, bool ok = true);
 339 void DumpMem(const void *buff, int n, const wxString& msg = wxEmptyString, bool ok = true);
 340 void DumpMem_DW(const uint32 *ptr, int count);
 341
 342 // Returns special source ID for GUI.
 343 // It's actually IP<<16+Port
 344 #define GUI_ID(x,y) (uint64)((((uint64)x)<<16) + (uint64)y)
 345 // And so...
 346 #define PORT_FROM_GUI_ID(x) (x & 0xFFFF)
 347 #define IP_FROM_GUI_ID(x) (x >> 16)
 348
 349
 350
 351 inline long int make_full_ed2k_version(int a, int b, int c) {
 352         return ((a << 17) | (b << 10) | (c << 7));
 353 }
 354
 355
 356 wxString GetConfigDir(const wxString &configFile = wxT("amule.conf"));
 357
 358 #if !wxCHECK_VERSION(2, 9, 0)
 359 enum {
 360         wxLANGUAGE_ASTURIAN     = wxLANGUAGE_USER_DEFINED + 1
 361 };
 362 #endif
 363
 364 /**
 365  * Adds aMule's custom languages to db.
 366  */
 367 void InitCustomLanguages();
 368
 369 /**
 370  * Initializes locale
 371  */
 372 void InitLocale(wxLocale& locale, int language);
 373
 374 /**
 375  * Converts a string locale definition to a wxLANGUAGE id.
 376  */
 377 int StrLang2wx(const wxString& language);
 378
 379 /**
 380  * Converts a wxLANGUAGE id to a string locale name.
 381  */
 382 wxString wxLang2Str(const int lang);
 383
 384 /**
 385  * Generate MD5Hash of prompt input
 386  */
 387 wxString GetPassword();
 388
 389
 390 #if wxUSE_THREADS
 391
 392 #include <wx/thread.h>
 393
 394 /**
 395  * Automatically unlocks a mutex on construction and locks it on destruction.
 396  *
 397  * This class is the complement of wxMutexLocker.  It is intended to be used
 398  * when a mutex, which is locked for a period of time, needs to be
 399  * temporarily unlocked for a bit.  For example:
 400  *
 401  *      wxMutexLocker lock(mutex);
 402  *
 403  *      // ... do stuff that requires that the mutex is locked ...
 404  *
 405  *      {
 406  *              CMutexUnlocker unlocker(mutex);
 407  *              // ... do stuff that requires that the mutex is unlocked ...
 408  *      }
 409  *
 410  *      // ... do more stuff that requires that the mutex is locked ...
 411  *
 412  */
 413 class CMutexUnlocker
 414 {
 415 public:
 416     // unlock the mutex in the ctor
 417     CMutexUnlocker(wxMutex& mutex)
 418         : m_isOk(false), m_mutex(mutex)
 419         { m_isOk = ( m_mutex.Unlock() == wxMUTEX_NO_ERROR ); }
 420
 421     // returns true if mutex was successfully unlocked in ctor
 422     bool IsOk() const
 423         { return m_isOk; }
 424
 425     // lock the mutex in dtor
 426     ~CMutexUnlocker()
 427         { if ( IsOk() ) m_mutex.Lock(); }
 428
 429 private:
 430     // no assignment operator nor copy ctor
 431     CMutexUnlocker(const CMutexUnlocker&);
 432     CMutexUnlocker& operator=(const CMutexUnlocker&);
 433
 434     bool     m_isOk;
 435     wxMutex& m_mutex;
 436 };
 437 #endif /* wxUSE_THREADS */
 438
 439
 440 #endif // OTHERFUNCTIONS_H
 441 // File_checked_for_headers