Poco::Ascii

// Library: Foundation
// Package: Core
// Module:  Ascii

功能：处理Ascii字符，对是否为控制字符，空白字符，字母，数字，标调符号，大小写等作出判断。这个类的实现是通过一个静态数组实现的，下表是Ascii值，数组里放着这个元素的属性。

Public方法

static bool isAscii(int ch);  /* 是否为Ascii，即[0...127] */
static bool isSpace(int ch);  /* 是否为空白符，水平制表，换行，垂直制表，换页，回车 ，空格*/    
static bool isDigit(int ch);   /* 是否为数字，0...9 */
static bool isHexDigit(int ch);   /* 0...9 , a...f , A...F */
static bool isPunct(int ch);  /* 标点符号 */
static bool isAlpha(int ch);  /* 字母 */
static bool isAlphaNumeric(int ch);  /* 字母或数字 */
static bool isLower(int ch);  
static bool isUpper(int ch);
static int toLower(int ch);
static int toUpper(int ch);

空格是可以print的，但是不能graph

const int Ascii::CHARACTER_PROPERTIES[128] = 
{
	/* 00 . */ ACP_CONTROL,
	/* 01 . */ ACP_CONTROL,
	/* 02 . */ ACP_CONTROL,
	/* 03 . */ ACP_CONTROL,
	/* 04 . */ ACP_CONTROL,
	/* 05 . */ ACP_CONTROL,
	/* 06 . */ ACP_CONTROL,
	/* 07 . */ ACP_CONTROL,
	/* 08 . */ ACP_CONTROL,
	/* 09 . */ ACP_CONTROL | ACP_SPACE,
	/* 0a . */ ACP_CONTROL | ACP_SPACE,
	/* 0b . */ ACP_CONTROL | ACP_SPACE,
	/* 0c . */ ACP_CONTROL | ACP_SPACE,
	/* 0d . */ ACP_CONTROL | ACP_SPACE,
	/* 0e . */ ACP_CONTROL,
	/* 0f . */ ACP_CONTROL,
	/* 10 . */ ACP_CONTROL,
	/* 11 . */ ACP_CONTROL,
	/* 12 . */ ACP_CONTROL,
	/* 13 . */ ACP_CONTROL,
	/* 14 . */ ACP_CONTROL,
	/* 15 . */ ACP_CONTROL,
	/* 16 . */ ACP_CONTROL,
	/* 17 . */ ACP_CONTROL,
	/* 18 . */ ACP_CONTROL,
	/* 19 . */ ACP_CONTROL,
	/* 1a . */ ACP_CONTROL,
	/* 1b . */ ACP_CONTROL,
	/* 1c . */ ACP_CONTROL,
	/* 1d . */ ACP_CONTROL,
	/* 1e . */ ACP_CONTROL,
	/* 1f . */ ACP_CONTROL,
	/* 20   */ ACP_SPACE | ACP_PRINT,
	/* 21 ! */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 22 " */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 23 # */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 24 $ */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 25 % */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 26 & */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 27 ' */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 28 ( */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 29 ) */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 2a * */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 2b + */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 2c , */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 2d - */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 2e . */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 2f / */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 30 0 */ ACP_DIGIT | ACP_HEXDIGIT | ACP_GRAPH | ACP_PRINT,
	/* 31 1 */ ACP_DIGIT | ACP_HEXDIGIT | ACP_GRAPH | ACP_PRINT,
	/* 32 2 */ ACP_DIGIT | ACP_HEXDIGIT | ACP_GRAPH | ACP_PRINT,
	/* 33 3 */ ACP_DIGIT | ACP_HEXDIGIT | ACP_GRAPH | ACP_PRINT,
	/* 34 4 */ ACP_DIGIT | ACP_HEXDIGIT | ACP_GRAPH | ACP_PRINT,
	/* 35 5 */ ACP_DIGIT | ACP_HEXDIGIT | ACP_GRAPH | ACP_PRINT,
	/* 36 6 */ ACP_DIGIT | ACP_HEXDIGIT | ACP_GRAPH | ACP_PRINT,
	/* 37 7 */ ACP_DIGIT | ACP_HEXDIGIT | ACP_GRAPH | ACP_PRINT,
	/* 38 8 */ ACP_DIGIT | ACP_HEXDIGIT | ACP_GRAPH | ACP_PRINT,
	/* 39 9 */ ACP_DIGIT | ACP_HEXDIGIT | ACP_GRAPH | ACP_PRINT,
	/* 3a : */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 3b ; */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 3c < */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 3d = */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 3e > */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 3f ? */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 40 @ */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 41 A */ ACP_HEXDIGIT | ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 42 B */ ACP_HEXDIGIT | ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 43 C */ ACP_HEXDIGIT | ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 44 D */ ACP_HEXDIGIT | ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 45 E */ ACP_HEXDIGIT | ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 46 F */ ACP_HEXDIGIT | ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 47 G */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 48 H */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 49 I */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 4a J */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 4b K */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 4c L */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 4d M */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 4e N */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 4f O */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 50 P */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 51 Q */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 52 R */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 53 S */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 54 T */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 55 U */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 56 V */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 57 W */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 58 X */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 59 Y */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 5a Z */ ACP_ALPHA | ACP_UPPER | ACP_GRAPH | ACP_PRINT,
	/* 5b [ */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 5c \ */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 5d ] */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 5e ^ */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 5f _ */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 60 ` */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 61 a */ ACP_HEXDIGIT | ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 62 b */ ACP_HEXDIGIT | ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 63 c */ ACP_HEXDIGIT | ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 64 d */ ACP_HEXDIGIT | ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 65 e */ ACP_HEXDIGIT | ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 66 f */ ACP_HEXDIGIT | ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 67 g */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 68 h */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 69 i */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 6a j */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 6b k */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 6c l */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 6d m */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 6e n */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 6f o */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 70 p */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 71 q */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 72 r */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 73 s */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 74 t */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 75 u */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 76 v */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 77 w */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 78 x */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 79 y */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 7a z */ ACP_ALPHA | ACP_LOWER | ACP_GRAPH | ACP_PRINT,
	/* 7b { */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 7c | */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 7d } */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 7e ~ */ ACP_PUNCT | ACP_GRAPH | ACP_PRINT,
	/* 7f . */ ACP_CONTROL
};