Add bc6 and bc7 compressors from nvidia.
This commit is contained in:
castano
245
src/nvtt/bc6h/arvo/Char.h
Executable file
245
src/nvtt/bc6h/arvo/Char.h
Executable file
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/***************************************************************************
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* Char.h *
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* *
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* Convenient constants, macros, and inline functions for manipulation of *
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* characters and strings. *
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* *
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* HISTORY *
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* Name Date Description *
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* *
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* arvo 07/01/93 Initial coding. *
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* *
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*--------------------------------------------------------------------------*
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* Copyright (C) 1999, James Arvo *
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* *
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* This program is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU General Public License as published by the *
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* Free Software Foundation. See http://www.fsf.org/copyleft/gpl.html *
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* *
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* This program is distributed in the hope that it will be useful, but *
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* WITHOUT EXPRESS OR IMPLIED WARRANTY of merchantability or fitness for *
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* any particular purpose. See the GNU General Public License for more *
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* details. *
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* *
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***************************************************************************/
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#ifndef __CHAR_INCLUDED__
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#define __CHAR_INCLUDED__
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#include <string>
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#include <iostream>
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namespace ArvoMath {
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static const char
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Apostrophe = '\'' ,
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Asterisk = '*' ,
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Atsign = '@' ,
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Backslash = '\\' ,
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Bell = '\7' ,
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Colon = ':' ,
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Comma = ',' ,
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Dash = '-' ,
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DoubleQuote = '"' ,
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EqualSign = '=' ,
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Exclamation = '!' ,
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GreaterThan = '>' ,
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Hash = '#' ,
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Lbrack = '[' ,
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Lcurley = '{' ,
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LessThan = '<' ,
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Lparen = '(' ,
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Minus = '-' ,
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NewLine = '\n' ,
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NullChar = '\0' ,
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Percent = '%' ,
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Period = '.' ,
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Pound = '#' ,
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Plus = '+' ,
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Rbrack = ']' ,
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Rcurley = '}' ,
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Rparen = ')' ,
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Semicolon = ';' ,
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Space = ' ' ,
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Slash = '/' ,
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Star = '*' ,
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Tab = '\t' ,
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Tilde = '~' ,
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Underscore = '_' ;
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inline int isWhite( char c ) { return c == Space || c == NewLine || c == Tab; }
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inline int isUcase( char c ) { return 'A' <= c && c <= 'Z'; }
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inline int isLcase( char c ) { return 'a' <= c && c <= 'z'; }
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inline int isAlpha( char c ) { return isUcase( c ) || isLcase( c ); }
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inline int isDigit( char c ) { return '0' <= c && c <= '9'; }
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inline char ToLower( char c ) { return isUcase( c ) ? c + ( 'a' - 'A' ) : c; }
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inline char ToUpper( char c ) { return isLcase( c ) ? c + ( 'A' - 'a' ) : c; }
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extern const char *getPath(
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const char *str,
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char *buff
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);
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extern const char *getFile(
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const char *str,
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char *buff
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);
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extern int getPrefix(
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const char *str,
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char *buff
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);
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extern int getSuffix(
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const char *str,
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char *buff
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);
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extern int isInteger(
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const char *str
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);
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extern int hasSuffix(
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const char *string,
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const char *suffix
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);
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extern int hasPrefix(
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const char *string,
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const char *prefix
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);
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extern int inString(
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char c,
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const char *str
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);
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extern int nullString(
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const char *str
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);
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extern const char *stripSuffix( // Return NULL if unsuccessful.
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const char *string, // The string to truncate.
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const char *suffix, // The suffix to remove.
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char *buff = NULL // Defaults to internal buffer.
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);
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extern const char* toString(
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int n, // An integer to convert to a string.
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char *buff = NULL // Defauts to internal buffer.
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);
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extern const char* toString(
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float x, // A float to convert to a string.
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char *buff = NULL // Defauts to internal buffer.
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);
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extern int getIndex( // The index of the start of a pattern in a string.
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const char *pat, // The pattern to look for.
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const char *str // The string to search.
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);
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extern int getSubstringAfter(
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const char *pat,
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const char *str,
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char *buff
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);
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extern const char *SubstringAfter(
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const char *pat,
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const char *str,
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char *buff = NULL // Defauts to internal buffer.
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);
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extern const char *metaString(
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const char *str, // Make this a string within a string.
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char *buff = NULL // Defauts to internal buffer.
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);
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extern const char *stripQuotes(
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const char *str, // This is the opposite of metaString.
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char *buff = NULL // Defauts to internal buffer.
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);
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extern int getIntFlag(
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const char *flags, // List of assignment statements.
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const char *flag, // A specific flag to look for.
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int &value // The variable to assign the value to.
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);
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extern int getFloatFlag(
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const char *flags, // List of assignment statements.
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const char *flag, // A specific flag to look for.
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float &value // The variable to assign the value to.
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);
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extern int getstring(
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std::istream &in,
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const char *str
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);
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enum sort_type {
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sort_alphabetic, // Standard dictionary ordering.
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sort_lexicographic // Sort first by length, then alphabetically.
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};
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class SortedList {
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public:
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SortedList( sort_type = sort_alphabetic, int ascending = 1 );
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~SortedList();
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SortedList &operator<<( const char * );
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int Size() const { return num_elements; }
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const char *operator()( int i );
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void Clear();
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void SetOrder( sort_type = sort_alphabetic, int ascending = 1 );
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private:
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void Sort();
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void InsertionSort( int start, int size, int step );
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void Swap( int i, int j );
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void Expand();
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int inOrder( int i, int j ) const;
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int num_elements;
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int max_elements;
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int sorted;
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int ascend;
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sort_type type;
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char **list;
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};
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inline int Match( const char *s, const char *t )
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{
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return s != NULL &&
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(t != NULL && strcmp( s, t ) == 0);
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}
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inline int Match( const char *s, const char *t1, const char *t2 )
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{
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return s != NULL && (
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(t1 != NULL && strcmp( s, t1 ) == 0) ||
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(t2 != NULL && strcmp( s, t2 ) == 0) );
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}
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union long_union_float {
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long i;
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float f;
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};
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inline long float_as_long( float x )
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{
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long_union_float u;
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u.f = x;
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return u.i;
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}
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inline float long_as_float( long i )
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{
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long_union_float u;
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u.i = i;
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return u.f;
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}
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extern std::istream &skipWhite( std::istream &in );
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};
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#endif
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