320 lines
10 KiB
C++
320 lines
10 KiB
C++
#ifndef RAGEUTIL_H
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#define RAGEUTIL_H
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/*
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-----------------------------------------------------------------------------
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File: RageUtil
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Desc: Miscellaneous helper macros and functions.
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Copyright (c) 2001-2002 by the person(s) listed below. All rights reserved.
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Chris Danford
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-----------------------------------------------------------------------------
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*/
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#include <map>
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//-----------------------------------------------------------------------------
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// SAFE_ Macros
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//-----------------------------------------------------------------------------
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#define SAFE_DELETE(p) { if(p) { delete (p); (p)=NULL; } }
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#define SAFE_DELETE_ARRAY(p) { if(p) { delete[] (p); (p)=NULL; } }
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#define SAFE_RELEASE(p) { if(p) { (p)->Release(); (p)=NULL; } }
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#define ZERO(x) memset(&x, 0, sizeof(x))
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#define COPY(a,b) { ASSERT(sizeof(a)==sizeof(b)); memcpy(&(a), &(b), sizeof(a)); }
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#define ARRAYSIZE(a) (sizeof(a) / sizeof((a)[0]))
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/* Common harmless mismatches. All min(T,T) and max(T,T) cases are handled
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* by the generic template we get from <algorithm>. */
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inline float min(float a, int b) { return a < b? a:b; }
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inline float min(int a, float b) { return a < b? a:b; }
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inline float max(float a, int b) { return a > b? a:b; }
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inline float max(int a, float b) { return a > b? a:b; }
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inline unsigned long min(unsigned int a, unsigned long b) { return a < b? a:b; }
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inline unsigned long min(unsigned long a, unsigned int b) { return a < b? a:b; }
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inline unsigned long max(unsigned int a, unsigned long b) { return a > b? a:b; }
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inline unsigned long max(unsigned long a, unsigned int b) { return a > b? a:b; }
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/* Traditional defines. Only use this if you absolutely need
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* a constant value. */
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#ifndef MAX
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#define MAX(a,b) (((a) > (b)) ? (a) : (b))
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#endif
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#ifndef MIN
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#define MIN(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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#define clamp(val,low,high) ( max( (low), min((val),(high)) ) )
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// Scales x so that l1 corresponds to l2 and h1 corresponds to h2. Does not modify x, MUST assign the result to something!
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// Do the multiply before the divide to that integer scales have more precision.
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#define SCALE(x, l1, h1, l2, h2) (((x) - (l1)) * ((h2) - (l2)) / ((h1) - (l1)) + (l2))
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#define CLAMP(x, l, h) {if (x > h) x = h; else if (x < l) x = l;}
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inline void wrap( int &x, int n)
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{
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if (x<0)
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x += ((-x/n)+1)*n;
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x %= n;
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}
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inline void wrap( float &x, float n)
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{
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if (x<0)
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x += truncf(((-x/n)+1))*n;
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x = fmodf(x,n);
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}
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//-----------------------------------------------------------------------------
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// Misc helper functions
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//-----------------------------------------------------------------------------
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// Fast random number generators
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// Taken from "Numerical Recipes in C"
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extern unsigned long randseed;
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inline unsigned long Random()
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{
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randseed = 1664525L * randseed + 1013904223L;
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return randseed;
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}
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inline float RandomFloat()
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{
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randseed = 1664525L * randseed + 1013904223L;
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unsigned long itemp = 0x3f800000 | (0x007fffff & randseed);
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return (*(float *)&itemp) - 1.0f;
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}
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// Returns a float between dLow and dHigh inclusive
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inline float RandomFloat(float fLow, float fHigh)
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{
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return RandomFloat() * (fHigh - fLow) + fLow;
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}
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// Returns an integer between nLow and nHigh inclusive
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inline int RandomInt(int nLow, int nHigh)
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{
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return ((Random() >> 2) % (nHigh - nLow + 1)) + nLow;
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}
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/* Alternative: */
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class RandomGen
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{
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unsigned long seed;
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public:
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RandomGen( unsigned long seed = 0 );
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int operator() ( int maximum = INT_MAX-1 );
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};
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// Simple function for generating random numbers
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inline float randomf( const float low=-1.0f, const float high=1.0f )
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{
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return low + ( high - low ) * ( (float)rand() ) / RAND_MAX;
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}
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inline float froundf( const float f, const float fRoundInterval )
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{
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return int( (f + fRoundInterval/2)/fRoundInterval ) * fRoundInterval;
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}
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// Move val toward other_val by to_move.
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void fapproach( float& val, float other_val, float to_move );
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/* Return a positive x mod y. */
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float fmodfp(float x, float y);
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int power_of_two(int input);
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bool IsAnInt( const CString &s );
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bool IsHexVal( const CString &s );
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float TimeToSeconds( const CString &sHMS );
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CString SecondsToTime( float fSecs );
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CString ssprintf( const char *fmt, ...) PRINTF(1,2);
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CString vssprintf( const char *fmt, va_list argList );
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#ifdef WIN32
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CString hr_ssprintf( int hr, const char *fmt, ...);
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CString werr_ssprintf( int err, const char *fmt, ...);
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#endif
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// Splits a Path into 4 parts (Directory, Drive, Filename, Extention). Supports UNC path names.
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/* If Path is a directory (eg. c:\games\stepmania"), append a slash so the last
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* element will end up in Dir, not FName: "c:\games\stepmania\". */
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void splitpath( const CString &Path, CString &Dir, CString &Filename, CString &Ext );
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CString SetExtension( const CString &path, const CString &ext );
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CString GetExtension( const CString &sPath );
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typedef int longchar;
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extern const wchar_t INVALID_CHAR;
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CString WStringToCString(const wstring &str);
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CString WcharToUTF8( wchar_t c );
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wstring CStringToWstring(const CString &str);
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wchar_t utf8_get_char (const char *p);
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int utf8_get_char_len (const char *p);
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bool utf8_is_valid(const CString &str);
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// Splits a CString into an CStringArray according the Delimitor.
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void split( const CString &Source, const CString &Delimitor, CStringArray& AddIt, const bool bIgnoreEmpty = true );
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void split( const wstring &Source, const wstring &Delimitor, vector<wstring> &AddIt, const bool bIgnoreEmpty = true );
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/* In-place split. */
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void split( const CString &Source, const CString &Delimitor, int &begin, int &size, const bool bIgnoreEmpty = true );
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void split( const wstring &Source, const wstring &Delimitor, int &begin, int &size, const bool bIgnoreEmpty = true );
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/* In-place split of partial string. */
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void split( const CString &Source, const CString &Delimitor, int &begin, int &size, int len, const bool bIgnoreEmpty ); /* no default to avoid ambiguity */
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void split( const wstring &Source, const wstring &Delimitor, int &begin, int &size, int len, const bool bIgnoreEmpty );
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// Joins a CStringArray to create a CString according the Deliminator.
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CString join( const CString &Delimitor, const CStringArray& Source );
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CString join( const CString &Delimitor, CStringArray::const_iterator begin, CStringArray::const_iterator end );
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CString GetCwd();
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unsigned int GetHashForString( const CString &s );
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unsigned int GetHashForFile( const CString &sPath );
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unsigned int GetHashForDirectory( const CString &sDir ); // a hash value that remains the same as long as nothing in the directory has changed
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bool DirectoryIsEmpty( const CString &dir );
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bool CompareCStringsAsc(const CString &str1, const CString &str2);
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bool CompareCStringsDesc(const CString &str1, const CString &str2);
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void SortCStringArray( CStringArray &AddTo, const bool bSortAscending = true );
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/* Find the mean and standard deviation of all numbers in [start,end). */
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float calc_mean(const float *start, const float *end);
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float calc_stddev(const float *start, const float *end);
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template<class T1, class T2>
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int FindIndex( T1 begin, T1 end, const T2 *p )
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{
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T1 iter = find( begin, end, p );
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if( iter == end )
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return -1;
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return iter - begin;
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}
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void TrimLeft(CString &str, const char *s = "\r\n\t ");
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void TrimRight(CString &str, const char *s = "\r\n\t ");
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void StripCrnl(CString &s);
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CString DerefRedir(const CString &path);
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CString GetRedirContents(const CString &path);
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class Regex {
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void *reg;
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unsigned backrefs;
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CString pattern;
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void Compile();
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void Release();
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public:
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Regex(const CString &pat = "");
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Regex(const Regex &rhs);
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Regex &operator=(const Regex &rhs);
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~Regex();
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void Set(const CString &str);
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bool Compare(const CString &str);
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bool Compare(const CString &str, vector<CString> &matches);
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};
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void Replace_Unicode_Markers( CString &Text );
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CString WcharDisplayText(wchar_t c);
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CString Basename( const CString &dir );
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CString Dirname( const CString &dir );
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CString Capitalize( const CString &s );
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#ifndef WIN32
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#include <unistd.h> /* correct place with correct definitions */
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#endif
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/* ASCII-only case insensitivity. */
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struct char_traits_char_nocase: public char_traits<char>
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{
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static char uptab[256];
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static inline bool eq( char c1, char c2 )
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{ return uptab[(unsigned char)c1] == uptab[(unsigned char)c2]; }
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static inline bool ne( char c1, char c2 )
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{ return uptab[(unsigned char)c1] != uptab[(unsigned char)c2]; }
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static inline bool lt( char c1, char c2 )
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{ return uptab[(unsigned char)c1] < uptab[(unsigned char)c2]; }
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static int compare( const char* s1, const char* s2, size_t n )
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{
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int ret = 0;
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while( n-- )
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{
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ret = fasttoupper(*s1++) - fasttoupper(*s2++);
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if( ret != 0 )
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break;
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}
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return ret;
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}
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static inline char fasttoupper(char a)
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{
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return uptab[(unsigned char)a];
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}
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static const char *find( const char* s, int n, char a )
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{
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a = fasttoupper(a);
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while( n-- > 0 && fasttoupper(*s) != a )
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++s;
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if(fasttoupper(*s) == a)
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return s;
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return NULL;
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}
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};
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typedef basic_string<char,char_traits_char_nocase> istring;
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/* Compatibility/convenience shortcuts. These are actually defined in RageFileManager.h, but
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* declared here since they're used in many places. */
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void GetDirListing( const CString &sPath, CStringArray &AddTo, bool bOnlyDirs=false, bool bReturnPathToo=false );
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bool DoesFileExist( const CString &sPath );
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bool IsAFile( const CString &sPath );
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bool IsADirectory( const CString &sPath );
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bool ResolvePath(CString &path);
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unsigned GetFileSizeInBytes( const CString &sFilePath );
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void FlushDirCache();
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// call FixSlashes on any path that came from the user
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void FixSlashesInPlace( CString &sPath );
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CString FixSlashes( CString sPath );
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void CollapsePath( CString &sPath );
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// helper file functions used by Bookkeeper and ProfileManager
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//
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// Helper function for reading/writing scores
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//
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class RageFile;
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bool FileRead(RageFile& f, CString& sOut);
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bool FileRead(RageFile& f, int& iOut);
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bool FileRead(RageFile& f, unsigned& uOut);
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bool FileRead(RageFile& f, float& fOut);
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void FileWrite(RageFile& f, const CString& sWrite);
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void FileWrite(RageFile& f, int iWrite);
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void FileWrite(RageFile& f, size_t uWrite);
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void FileWrite(RageFile& f, float fWrite);
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bool FileCopy( CString sSrcFile, CString sDstFile );
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#endif
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