diff -r a501f5ec7b34 -r 0f5961910e27 misc/libfreetype/src/psaux/psconv.c --- a/misc/libfreetype/src/psaux/psconv.c Tue Jul 16 11:14:27 2013 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,472 +0,0 @@ -/***************************************************************************/ -/* */ -/* psconv.c */ -/* */ -/* Some convenience conversions (body). */ -/* */ -/* Copyright 2006, 2008, 2009 by */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - - -#include -#include FT_INTERNAL_POSTSCRIPT_AUX_H - -#include "psconv.h" -#include "psauxerr.h" - - - /* The following array is used by various functions to quickly convert */ - /* digits (both decimal and non-decimal) into numbers. */ - -#if 'A' == 65 - /* ASCII */ - - static const FT_Char ft_char_table[128] = - { - /* 0x00 */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, - -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, - 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, - -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, - 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, - }; - - /* no character >= 0x80 can represent a valid number */ -#define OP >= - -#endif /* 'A' == 65 */ - -#if 'A' == 193 - /* EBCDIC */ - - static const FT_Char ft_char_table[128] = - { - /* 0x80 */ - -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, -1, -1, -1, -1, -1, -1, - -1, 19, 20, 21, 22, 23, 24, 25, 26, 27, -1, -1, -1, -1, -1, -1, - -1, -1, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, -1, -1, -1, -1, -1, -1, - -1, 19, 20, 21, 22, 23, 24, 25, 26, 27, -1, -1, -1, -1, -1, -1, - -1, -1, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, -1, - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, - }; - - /* no character < 0x80 can represent a valid number */ -#define OP < - -#endif /* 'A' == 193 */ - - - FT_LOCAL_DEF( FT_Int ) - PS_Conv_Strtol( FT_Byte** cursor, - FT_Byte* limit, - FT_Int base ) - { - FT_Byte* p = *cursor; - FT_Int num = 0; - FT_Bool sign = 0; - - - if ( p == limit || base < 2 || base > 36 ) - return 0; - - if ( *p == '-' || *p == '+' ) - { - sign = FT_BOOL( *p == '-' ); - - p++; - if ( p == limit ) - return 0; - } - - for ( ; p < limit; p++ ) - { - FT_Char c; - - - if ( IS_PS_SPACE( *p ) || *p OP 0x80 ) - break; - - c = ft_char_table[*p & 0x7f]; - - if ( c < 0 || c >= base ) - break; - - num = num * base + c; - } - - if ( sign ) - num = -num; - - *cursor = p; - - return num; - } - - - FT_LOCAL_DEF( FT_Int ) - PS_Conv_ToInt( FT_Byte** cursor, - FT_Byte* limit ) - - { - FT_Byte* p; - FT_Int num; - - - num = PS_Conv_Strtol( cursor, limit, 10 ); - p = *cursor; - - if ( p < limit && *p == '#' ) - { - *cursor = p + 1; - - return PS_Conv_Strtol( cursor, limit, num ); - } - else - return num; - } - - - FT_LOCAL_DEF( FT_Fixed ) - PS_Conv_ToFixed( FT_Byte** cursor, - FT_Byte* limit, - FT_Int power_ten ) - { - FT_Byte* p = *cursor; - FT_Fixed integral; - FT_Long decimal = 0, divider = 1; - FT_Bool sign = 0; - - - if ( p == limit ) - return 0; - - if ( *p == '-' || *p == '+' ) - { - sign = FT_BOOL( *p == '-' ); - - p++; - if ( p == limit ) - return 0; - } - - if ( *p != '.' ) - integral = PS_Conv_ToInt( &p, limit ) << 16; - else - integral = 0; - - /* read the decimal part */ - if ( p < limit && *p == '.' ) - { - p++; - - for ( ; p < limit; p++ ) - { - FT_Char c; - - - if ( IS_PS_SPACE( *p ) || *p OP 0x80 ) - break; - - c = ft_char_table[*p & 0x7f]; - - if ( c < 0 || c >= 10 ) - break; - - if ( !integral && power_ten > 0 ) - { - power_ten--; - decimal = decimal * 10 + c; - } - else - { - if ( divider < 10000000L ) - { - decimal = decimal * 10 + c; - divider *= 10; - } - } - } - } - - /* read exponent, if any */ - if ( p + 1 < limit && ( *p == 'e' || *p == 'E' ) ) - { - p++; - power_ten += PS_Conv_ToInt( &p, limit ); - } - - while ( power_ten > 0 ) - { - integral *= 10; - decimal *= 10; - power_ten--; - } - - while ( power_ten < 0 ) - { - integral /= 10; - divider *= 10; - power_ten++; - } - - if ( decimal ) - integral += FT_DivFix( decimal, divider ); - - if ( sign ) - integral = -integral; - - *cursor = p; - - return integral; - } - - -#if 0 - FT_LOCAL_DEF( FT_UInt ) - PS_Conv_StringDecode( FT_Byte** cursor, - FT_Byte* limit, - FT_Byte* buffer, - FT_Offset n ) - { - FT_Byte* p; - FT_UInt r = 0; - - - for ( p = *cursor; r < n && p < limit; p++ ) - { - FT_Byte b; - - - if ( *p != '\\' ) - { - buffer[r++] = *p; - - continue; - } - - p++; - - switch ( *p ) - { - case 'n': - b = '\n'; - break; - case 'r': - b = '\r'; - break; - case 't': - b = '\t'; - break; - case 'b': - b = '\b'; - break; - case 'f': - b = '\f'; - break; - case '\r': - p++; - if ( *p != '\n' ) - { - b = *p; - - break; - } - /* no break */ - case '\n': - continue; - break; - default: - if ( IS_PS_DIGIT( *p ) ) - { - b = *p - '0'; - - p++; - - if ( IS_PS_DIGIT( *p ) ) - { - b = b * 8 + *p - '0'; - - p++; - - if ( IS_PS_DIGIT( *p ) ) - b = b * 8 + *p - '0'; - else - { - buffer[r++] = b; - b = *p; - } - } - else - { - buffer[r++] = b; - b = *p; - } - } - else - b = *p; - break; - } - - buffer[r++] = b; - } - - *cursor = p; - - return r; - } -#endif /* 0 */ - - - FT_LOCAL_DEF( FT_UInt ) - PS_Conv_ASCIIHexDecode( FT_Byte** cursor, - FT_Byte* limit, - FT_Byte* buffer, - FT_Offset n ) - { - FT_Byte* p; - FT_UInt r = 0; - FT_UInt w = 0; - FT_UInt pad = 0x01; - - - n *= 2; - -#if 1 - - p = *cursor; - if ( n > (FT_UInt)( limit - p ) ) - n = (FT_UInt)( limit - p ); - - /* we try to process two nibbles at a time to be as fast as possible */ - for ( ; r < n; r++ ) - { - FT_UInt c = p[r]; - - - if ( IS_PS_SPACE( c ) ) - continue; - - if ( c OP 0x80 ) - break; - - c = ft_char_table[c & 0x7F]; - if ( (unsigned)c >= 16 ) - break; - - pad = ( pad << 4 ) | c; - if ( pad & 0x100 ) - { - buffer[w++] = (FT_Byte)pad; - pad = 0x01; - } - } - - if ( pad != 0x01 ) - buffer[w++] = (FT_Byte)( pad << 4 ); - - *cursor = p + r; - - return w; - -#else /* 0 */ - - for ( r = 0; r < n; r++ ) - { - FT_Char c; - - - if ( IS_PS_SPACE( *p ) ) - continue; - - if ( *p OP 0x80 ) - break; - - c = ft_char_table[*p & 0x7f]; - - if ( (unsigned)c >= 16 ) - break; - - if ( r & 1 ) - { - *buffer = (FT_Byte)(*buffer + c); - buffer++; - } - else - *buffer = (FT_Byte)(c << 4); - - r++; - } - - *cursor = p; - - return ( r + 1 ) / 2; - -#endif /* 0 */ - - } - - - FT_LOCAL_DEF( FT_UInt ) - PS_Conv_EexecDecode( FT_Byte** cursor, - FT_Byte* limit, - FT_Byte* buffer, - FT_Offset n, - FT_UShort* seed ) - { - FT_Byte* p; - FT_UInt r; - FT_UInt s = *seed; - - -#if 1 - - p = *cursor; - if ( n > (FT_UInt)(limit - p) ) - n = (FT_UInt)(limit - p); - - for ( r = 0; r < n; r++ ) - { - FT_UInt val = p[r]; - FT_UInt b = ( val ^ ( s >> 8 ) ); - - - s = ( (val + s)*52845U + 22719 ) & 0xFFFFU; - buffer[r] = (FT_Byte) b; - } - - *cursor = p + n; - *seed = (FT_UShort)s; - -#else /* 0 */ - - for ( r = 0, p = *cursor; r < n && p < limit; r++, p++ ) - { - FT_Byte b = (FT_Byte)( *p ^ ( s >> 8 ) ); - - - s = (FT_UShort)( ( *p + s ) * 52845U + 22719 ); - *buffer++ = b; - } - *cursor = p; - *seed = s; - -#endif /* 0 */ - - return r; - } - - -/* END */