source-engine/external/vpc/public/tier1/strtools.h
FluorescentCIAAfricanAmerican 3bf9df6b27 1
2020-04-22 12:56:21 -04:00

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C++

//===== Copyright 1996-2005, Valve Corporation, All rights reserved. ======//
//
// Purpose:
//
// $NoKeywords: $
//
//===========================================================================//
#ifndef TIER1_STRTOOLS_H
#define TIER1_STRTOOLS_H
#include "tier0/basetypes.h"
#ifdef _WIN32
#pragma once
#elif POSIX
#include <ctype.h>
#include <wchar.h>
#include <math.h>
#include <wctype.h>
#endif
#include <string.h>
#include <stdlib.h>
// 3d memcpy. Copy (up-to) 3 dimensional data with arbitrary source and destination
// strides. Optimizes to just a single memcpy when possible. For 2d data, set numslices to 1.
void CopyMemory3D( void *pDestAdr, void const *pSrcAdr,
int nNumCols, int nNumRows, int nNumSlices, // dimensions of copy
int nSrcBytesPerRow, int nSrcBytesPerSlice, // strides for source.
int nDestBytesPerRow, int nDestBytesPerSlice // strides for dest
);
template< class T, class I > class CUtlMemory;
template< class T, class A > class CUtlVector;
//-----------------------------------------------------------------------------
// Portable versions of standard string functions
//-----------------------------------------------------------------------------
void _V_memset ( void *dest, int fill, int count );
void _V_memcpy ( void *dest, const void *src, int count );
void _V_memmove ( void *dest, const void *src, int count );
int _V_memcmp ( const void *m1, const void *m2, int count );
int _V_strlen ( const char *str );
void _V_strcpy ( char *dest, const char *src );
char* _V_strrchr ( const char *s, char c );
int _V_strcmp ( const char *s1, const char *s2 );
int _V_wcscmp ( const wchar_t *s1, const wchar_t *s2 );
int _V_stricmp ( const char *s1, const char *s2 );
char* _V_strstr ( const char *s1, const char *search );
char* _V_strupr ( char *start );
char* _V_strlower ( char *start );
int _V_wcslen ( const wchar_t *pwch );
wchar_t* _V_wcslower (const char* file, int line, wchar_t *start);
wchar_t* _V_wcsupr (const char* file, int line, wchar_t *start);
#ifdef POSIX
inline char *strupr( char *start )
{
char *str = start;
while( str && *str )
{
*str = (char)toupper(*str);
str++;
}
return start;
}
inline char *strlwr( char *start )
{
char *str = start;
while( str && *str )
{
*str = (char)tolower(*str);
str++;
}
return start;
}
inline wchar_t *_wcslwr( wchar_t *start )
{
wchar_t *str = start;
while( str && *str )
{
*str = (wchar_t)towlower(static_cast<wint_t>(*str));
str++;
}
return start;
};
inline wchar_t *_wcsupr( wchar_t *start )
{
wchar_t *str = start;
while( str && *str )
{
*str = (wchar_t)towupper(static_cast<wint_t>(*str));
str++;
}
return start;
};
#endif // POSIX
// there are some users of these via tier1 templates in used in tier0. but tier0 can't depend on vstdlib which means in tier0 we always need the inlined ones
#if ( !defined( TIER0_DLL_EXPORT ) )
#if !defined( _DEBUG ) && defined( _PS3 )
#include "tier1/strtools_inlines.h"
// To avoid cross-prx calls, making the V_* fucntions that don't do anything but debug checks and call through to the non V_* function
// go ahead and call the non-V_* functions directly.
#define V_memset(dest, fill, count) memset ((dest), (fill), (count))
#define V_memcpy(dest, src, count) memcpy ((dest), (src), (count))
#define V_memmove(dest, src, count) memmove ((dest), (src), (count))
#define V_memcmp(m1, m2, count) memcmp ((m1), (m2), (count))
#define V_strcpy(dest, src) strcpy ((dest), (src))
#define V_strcmp(s1, s2) strcmp ((s1), (s2))
#define V_strupr(start) strupr ((start))
#define V_strlower(start) strlwr ((start))
#define V_wcslen(pwch) wcslen ((pwch))
// To avoid cross-prx calls, using inline versions of these custom functions:
#define V_strlen(str) _V_strlen_inline ((str))
#define V_strrchr(s, c) _V_strrchr_inline ((s), (c))
#define V_wcscmp(s1, s2) _V_wcscmp_inline ((s1), (s2))
#define V_stricmp(s1, s2 ) _V_stricmp_inline ((s1), (s2) )
#define V_strstr(s1, search ) _V_strstr_inline ((s1), (search) )
#else
#define V_memset(dest, fill, count) _V_memset ((dest), (fill), (count))
#define V_memcpy(dest, src, count) _V_memcpy ((dest), (src), (count))
#define V_memmove(dest, src, count) _V_memmove ((dest), (src), (count))
#define V_memcmp(m1, m2, count) _V_memcmp ((m1), (m2), (count))
#define V_strlen(str) _V_strlen ((str))
#define V_strcpy(dest, src) _V_strcpy ((dest), (src))
#define V_strrchr(s, c) _V_strrchr ((s), (c))
#define V_strcmp(s1, s2) _V_strcmp ((s1), (s2))
#define V_wcscmp(s1, s2) _V_wcscmp ((s1), (s2))
#define V_stricmp(s1, s2 ) _V_stricmp ((s1), (s2) )
#define V_strstr(s1, search ) _V_strstr ((s1), (search) )
#define V_strupr(start) _V_strupr ((start))
#define V_strlower(start) _V_strlower ((start))
#define V_wcslen(pwch) _V_wcslen ((pwch))
#endif
#else
inline void V_memset (void *dest, int fill, int count) { memset( dest, fill, count ); }
inline void V_memcpy (void *dest, const void *src, int count) { memcpy( dest, src, count ); }
inline void V_memmove (void *dest, const void *src, int count) { memmove( dest, src, count ); }
inline int V_memcmp (const void *m1, const void *m2, int count){ return memcmp( m1, m2, count ); }
inline int V_strlen (const char *str) { return (int) strlen ( str ); }
inline void V_strcpy (char *dest, const char *src) { strcpy( dest, src ); }
inline int V_wcslen(const wchar_t *pwch) { return (int)wcslen(pwch); }
inline char* V_strrchr (const char *s, char c) { return (char*)strrchr( s, c ); }
inline int V_strcmp (const char *s1, const char *s2) { return strcmp( s1, s2 ); }
inline int V_wcscmp (const wchar_t *s1, const wchar_t *s2) { return wcscmp( s1, s2 ); }
inline int V_stricmp( const char *s1, const char *s2 ) { return stricmp( s1, s2 ); }
inline char* V_strstr( const char *s1, const char *search ) { return (char*)strstr( s1, search ); }
#ifndef COMPILER_PS3
inline char* V_strupr (char *start) { return strupr( start ); }
inline char* V_strlower (char *start) { return strlwr( start ); }
inline wchar_t* V_wcsupr (wchar_t *start) { return _wcsupr( start ); }
#endif
#endif
int V_strncmp (const char *s1, const char *s2, int count);
int V_strcasecmp (const char *s1, const char *s2);
int V_strncasecmp (const char *s1, const char *s2, int n);
int V_strnicmp (const char *s1, const char *s2, int n);
int V_atoi (const char *str);
int64 V_atoi64(const char *str);
uint64 V_atoui64(const char *str);
float V_atof (const char *str);
char* V_stristr( char* pStr, const char* pSearch );
const char* V_stristr( const char* pStr, const char* pSearch );
const char* V_strnistr( const char* pStr, const char* pSearch, int n );
const char* V_strnchr( const char* pStr, char c, int n );
// returns string immediately following prefix, (ie str+strlen(prefix)) or NULL if prefix not found
const char *StringAfterPrefix ( const char *str, const char *prefix );
const char *StringAfterPrefixCaseSensitive( const char *str, const char *prefix );
inline bool StringHasPrefix ( const char *str, const char *prefix ) { return StringAfterPrefix ( str, prefix ) != NULL; }
inline bool StringHasPrefixCaseSensitive( const char *str, const char *prefix ) { return StringAfterPrefixCaseSensitive( str, prefix ) != NULL; }
// Normalizes a float string in place.
// (removes leading zeros, trailing zeros after the decimal point, and the decimal point itself where possible)
void V_normalizeFloatString( char* pFloat );
inline bool V_isspace(int c)
{
// The standard white-space characters are the following: space, tab, carriage-return, newline, vertical tab, and form-feed. In the C locale, V_isspace() returns true only for the standard white-space characters.
//return c == ' ' || c == 9 /*horizontal tab*/ || c == '\r' || c == '\n' || c == 11 /*vertical tab*/ || c == '\f';
// codes of whitespace symbols: 9 HT, 10 \n, 11 VT, 12 form feed, 13 \r, 32 space
// easy to understand version, validated:
// return ((1 << (c-1)) & 0x80001F00) != 0 && ((c-1)&0xE0) == 0;
// 5% faster on Core i7, 35% faster on Xbox360, no branches, validated:
#ifdef _X360
return ((1 << (c-1)) & 0x80001F00 & ~(-int((c-1)&0xE0))) != 0;
#else
// this is 11% faster on Core i7 than the previous, VC2005 compiler generates a seemingly unbalanced search tree that's faster
switch(c)
{
case ' ':
case 9:
case '\r':
case '\n':
case 11:
case '\f':
return true;
default:
return false;
}
#endif
}
// These are versions of functions that guarantee NULL termination.
//
// maxLen is the maximum number of bytes in the destination string.
// pDest[maxLen-1] is always NULL terminated if pSrc's length is >= maxLen.
//
// This means the last parameter can usually be a sizeof() of a string.
void V_strncpy( char *pDest, const char *pSrc, int maxLen );
int V_snprintf( char *pDest, int destLen, const char *pFormat, ... ) FMTFUNCTION( 3, 4 );
void V_wcsncpy( wchar_t *pDest, wchar_t const *pSrc, int maxLenInBytes );
int V_snwprintf( wchar_t *pDest, int maxLenInNumWideCharacters, const wchar_t *pFormat, ... );
#define COPY_ALL_CHARACTERS -1
char *V_strncat(char *, const char *, size_t maxLenInBytes, int max_chars_to_copy=COPY_ALL_CHARACTERS );
wchar_t *V_wcsncat(wchar_t *, const wchar_t *, int maxLenInBytes, int max_chars_to_copy=COPY_ALL_CHARACTERS );
char *V_strnlwr(char *, size_t);
// UNDONE: Find a non-compiler-specific way to do this
#ifdef _WIN32
#ifndef _VA_LIST_DEFINED
#ifdef _M_ALPHA
struct va_list
{
char *a0; /* pointer to first homed integer argument */
int offset; /* byte offset of next parameter */
};
#else // !_M_ALPHA
typedef char * va_list;
#endif // !_M_ALPHA
#define _VA_LIST_DEFINED
#endif // _VA_LIST_DEFINED
#elif POSIX
#include <stdarg.h>
#endif
#ifdef _WIN32
#define CORRECT_PATH_SEPARATOR '\\'
#define CORRECT_PATH_SEPARATOR_S "\\"
#define INCORRECT_PATH_SEPARATOR '/'
#define INCORRECT_PATH_SEPARATOR_S "/"
#elif POSIX || defined( _PS3 )
#define CORRECT_PATH_SEPARATOR '/'
#define CORRECT_PATH_SEPARATOR_S "/"
#define INCORRECT_PATH_SEPARATOR '\\'
#define INCORRECT_PATH_SEPARATOR_S "\\"
#endif
int V_vsnprintf( char *pDest, int maxLen, const char *pFormat, va_list params );
int V_vsnprintfRet( char *pDest, int maxLen, const char *pFormat, va_list params, bool *pbTruncated );
// Prints out a pretified memory counter string value ( e.g., 7,233.27 Mb, 1,298.003 Kb, 127 bytes )
char *V_pretifymem( float value, int digitsafterdecimal = 2, bool usebinaryonek = false );
// Prints out a pretified integer with comma separators (eg, 7,233,270,000)
char *V_pretifynum( int64 value );
// Functions for converting hexidecimal character strings back into binary data etc.
//
// e.g.,
// int output;
// V_hextobinary( "ffffffff", 8, &output, sizeof( output ) );
// would make output == 0xfffffff or -1
// Similarly,
// char buffer[ 9 ];
// V_binarytohex( &output, sizeof( output ), buffer, sizeof( buffer ) );
// would put "ffffffff" into buffer (note null terminator!!!)
void V_hextobinary( char const *in, int numchars, byte *out, int maxoutputbytes );
void V_binarytohex( const byte *in, int inputbytes, char *out, int outsize );
// Tools for working with filenames
// Extracts the base name of a file (no path, no extension, assumes '/' or '\' as path separator)
void V_FileBase( const char *in, char *out,int maxlen );
// Remove the final characters of ppath if it's '\' or '/'.
void V_StripTrailingSlash( char *ppath );
// Remove any extension from in and return resulting string in out
void V_StripExtension( const char *in, char *out, int outLen );
// Make path end with extension if it doesn't already have an extension
void V_DefaultExtension( char *path, const char *extension, int pathStringLength );
// Strips any current extension from path and ensures that extension is the new extension.
// NOTE: extension string MUST include the . character
void V_SetExtension( char *path, const char *extension, int pathStringLength );
// Removes any filename from path ( strips back to previous / or \ character )
void V_StripFilename( char *path );
// Remove the final directory from the path
bool V_StripLastDir( char *dirName, int maxlen );
// Returns a pointer to the unqualified file name (no path) of a file name
const char * V_UnqualifiedFileName( const char * in );
char * V_UnqualifiedFileName( char * in );
// Given a path and a filename, composes "path\filename", inserting the (OS correct) separator if necessary
void V_ComposeFileName( const char *path, const char *filename, char *dest, int destSize );
// Copy out the path except for the stuff after the final pathseparator
bool V_ExtractFilePath( const char *path, char *dest, int destSize );
// Copy out the file extension into dest
void V_ExtractFileExtension( const char *path, char *dest, int destSize );
const char *V_GetFileExtension( const char * path );
// returns a pointer to just the filename part of the path
// (everything after the last path seperator)
const char *V_GetFileName( const char * path );
// This removes "./" and "../" from the pathname. pFilename should be a full pathname.
// Returns false if it tries to ".." past the root directory in the drive (in which case
// it is an invalid path).
bool V_RemoveDotSlashes( char *pFilename, char separator = CORRECT_PATH_SEPARATOR );
// If pPath is a relative path, this function makes it into an absolute path
// using the current working directory as the base, or pStartingDir if it's non-NULL.
// Returns false if it runs out of room in the string, or if pPath tries to ".." past the root directory.
void V_MakeAbsolutePath( char *pOut, int outLen, const char *pPath, const char *pStartingDir = NULL );
// Creates a relative path given two full paths
// The first is the full path of the file to make a relative path for.
// The second is the full path of the directory to make the first file relative to
// Returns false if they can't be made relative (on separate drives, for example)
bool V_MakeRelativePath( const char *pFullPath, const char *pDirectory, char *pRelativePath, int nBufLen );
// Fixes up a file name, removing dot slashes, fixing slashes, converting to lowercase, etc.
void V_FixupPathName( char *pOut, size_t nOutLen, const char *pPath );
// Adds a path separator to the end of the string if there isn't one already. Returns false if it would run out of space.
void V_AppendSlash( char *pStr, int strSize );
// Returns true if the path is an absolute path.
bool V_IsAbsolutePath( const char *pPath );
// Scans pIn and replaces all occurences of pMatch with pReplaceWith.
// Writes the result to pOut.
// Returns true if it completed successfully.
// If it would overflow pOut, it fills as much as it can and returns false.
bool V_StrSubst( const char *pIn, const char *pMatch, const char *pReplaceWith,
char *pOut, int outLen, bool bCaseSensitive=false );
// Split the specified string on the specified separator.
// Returns a list of strings separated by pSeparator.
// You are responsible for freeing the contents of outStrings (call outStrings.PurgeAndDeleteElements).
void V_SplitString( const char *pString, const char *pSeparator, CUtlVector<char*, CUtlMemory<char*, int> > &outStrings );
// Just like V_SplitString, but it can use multiple possible separators.
void V_SplitString2( const char *pString, const char **pSeparators, int nSeparators, CUtlVector<char*, CUtlMemory<char*, int> > &outStrings );
// Returns false if the buffer is not large enough to hold the working directory name.
bool V_GetCurrentDirectory( char *pOut, int maxLen );
// Set the working directory thus.
bool V_SetCurrentDirectory( const char *pDirName );
// This function takes a slice out of pStr and stores it in pOut.
// It follows the Python slice convention:
// Negative numbers wrap around the string (-1 references the last character).
// Large numbers are clamped to the end of the string.
void V_StrSlice( const char *pStr, int firstChar, int lastCharNonInclusive, char *pOut, int outSize );
// Chop off the left nChars of a string.
void V_StrLeft( const char *pStr, int nChars, char *pOut, int outSize );
// Chop off the right nChars of a string.
void V_StrRight( const char *pStr, int nChars, char *pOut, int outSize );
// change "special" characters to have their c-style backslash sequence. like \n, \r, \t, ", etc.
// returns a pointer to a newly allocated string, which you must delete[] when finished with.
char *V_AddBackSlashesToSpecialChars( char const *pSrc );
// Force slashes of either type to be = separator character
void V_FixSlashes( char *pname, char separator = CORRECT_PATH_SEPARATOR );
// This function fixes cases of filenames like materials\\blah.vmt or somepath\otherpath\\ and removes the extra double slash.
void V_FixDoubleSlashes( char *pStr );
// Convert multibyte to wchar + back
// Specify -1 for nInSize for null-terminated string
void V_strtowcs( const char *pString, int nInSize, wchar_t *pWString, int nOutSize );
void V_wcstostr( const wchar_t *pWString, int nInSize, char *pString, int nOutSize );
// buffer-safe strcat
inline void V_strcat( char *dest, const char *src, int maxLenInBytes )
{
V_strncat( dest, src, maxLenInBytes, COPY_ALL_CHARACTERS );
}
// buffer-safe strcat
inline void V_wcscat( wchar_t *dest, const wchar_t *src, int maxLenInBytes )
{
V_wcsncat( dest, src, maxLenInBytes, COPY_ALL_CHARACTERS );
}
// Convert from a string to an array of integers.
void V_StringToIntArray( int *pVector, int count, const char *pString );
// Convert from a string to a 4 byte color value.
void V_StringToColor32( color32 *color, const char *pString );
// Convert \r\n (Windows linefeeds) to \n (Unix linefeeds).
void V_TranslateLineFeedsToUnix( char *pStr );
//-----------------------------------------------------------------------------
// generic unique name helper functions
//-----------------------------------------------------------------------------
// returns -1 if no match, nDefault if pName==prefix, and N if pName==prefix+N
inline int V_IndexAfterPrefix( const char *pName, const char *prefix, int nDefault = 0 )
{
if ( !pName || !prefix )
return -1;
const char *pIndexStr = StringAfterPrefix( pName, prefix );
if ( !pIndexStr )
return -1;
if ( !*pIndexStr )
return nDefault;
return atoi( pIndexStr );
}
// returns startindex if none found, 2 if "prefix" found, and n+1 if "prefixn" found
template < class NameArray >
int V_GenerateUniqueNameIndex( const char *prefix, const NameArray &nameArray, int startindex = 0 )
{
if ( !prefix )
return 0;
int freeindex = startindex;
int nNames = nameArray.Count();
for ( int i = 0; i < nNames; ++i )
{
int index = V_IndexAfterPrefix( nameArray[ i ], prefix, 1 ); // returns -1 if no match, 0 for exact match, N for
if ( index >= freeindex )
{
// TODO - check that there isn't more junk after the index in pElementName
freeindex = index + 1;
}
}
return freeindex;
}
template < class NameArray >
bool V_GenerateUniqueName( char *name, int memsize, const char *prefix, const NameArray &nameArray )
{
if ( name == NULL || memsize == 0 )
return false;
if ( prefix == NULL )
{
name[ 0 ] = '\0';
return false;
}
int prefixLength = V_strlen( prefix );
if ( prefixLength + 1 > memsize )
{
name[ 0 ] = '\0';
return false;
}
int i = V_GenerateUniqueNameIndex( prefix, nameArray );
if ( i <= 0 )
{
V_strncpy( name, prefix, memsize );
return true;
}
int newlen = prefixLength + ( int )log10( ( float )i ) + 1;
if ( newlen + 1 > memsize )
{
V_strncpy( name, prefix, memsize );
return false;
}
V_snprintf( name, memsize, "%s%d", prefix, i );
return true;
}
extern bool V_StringToBin( const char*pString, void *pBin, uint nBinSize );
extern bool V_BinToString( char*pString, void *pBin, uint nBinSize );
template<typename T>
struct BinString_t
{
BinString_t(){}
BinString_t( const char *pStr )
{
V_strncpy( m_string, pStr, sizeof(m_string) );
ToBin();
}
BinString_t( const T & that )
{
m_bin = that;
ToString();
}
bool ToBin()
{
return V_StringToBin( m_string, &m_bin, sizeof( m_bin ) );
}
void ToString()
{
V_BinToString( m_string, &m_bin, sizeof( m_bin ) );
}
T m_bin;
char m_string[sizeof(T)*2+2]; // 0-terminated string representing the binary data in hex
};
template <typename T>
inline BinString_t<T> MakeBinString( const T& that )
{
return BinString_t<T>( that );
}
#if defined(_PS3) || defined(POSIX)
#define PRI_WS_FOR_WS L"%ls"
#define PRI_WS_FOR_S "%ls"
#define PRI_S_FOR_WS L"%s"
#define PRI_S_FOR_S "%s"
#else
#define PRI_WS_FOR_WS L"%s"
#define PRI_WS_FOR_S "%S"
#define PRI_S_FOR_WS L"%S"
#define PRI_S_FOR_S "%s"
#endif
namespace AsianWordWrap
{
// Functions used by Asian language line wrapping to determine if a character can end a line, begin a line, or be broken up when repeated (eg: "...")
bool CanEndLine( wchar_t wcCandidate );
bool CanBeginLine( wchar_t wcCandidate );
bool CanBreakRepeated( wchar_t wcCandidate );
// Used to determine if we can break a line between the first two characters passed; calls the above functions on each character
bool CanBreakAfter( const wchar_t* wsz );
}
// We use this function to determine where it is permissible to break lines
// of text while wrapping them. On most platforms, the native iswspace() function
// returns FALSE for the "non-breaking space" characters 0x00a0 and 0x202f, and so we don't
// break on them. On the 360, however, iswspace returns TRUE for them. So, on that
// platform, we work around it by defining this wrapper which returns false
// for &nbsp; and calls through to the library function for everything else.
int isbreakablewspace( wchar_t ch );
#endif // TIER1_STRTOOLS_H