ActionScript字符串操作.doc

packagecom.xlands.utils importflash.utils.ByteArray; /* *字符串工具 * */ publicclassStringUtil /忽略大小字母比较字符是否相等; publicstaticfunctionequalsIgnoreCase(char1:String,char2:String):Boolean returnchar1.toLowerCase()=char2.toLowerCase(); /比较字符是否相等; publicstaticfunctionequals(char1:String,char2:String):Boolean returnchar1=char2; /是否为Email地址; publicstaticfunctionisEmail(char:String):Boolean if(char=null) returnfalse; char=trim(char); varpattern:RegExp=/(w|_.-)+(w|-)+.)+w2,4+/; varresult:Object=pattern.exec(char); if(result=null) returnfalse; returntrue; /是否是数值字符串; publicstaticfunctionisNumber(char:String):Boolean if(char=null) returnfalse; return!isNaN(parseInt(char) /是否为Double型数据; publicstaticfunctionisDouble(char:String):Boolean char=trim(char); varpattern:RegExp=/-+?d+(.d+)?$/; varresult:Object=pattern.exec(char); if(result=null) returnfalse; returntrue; /Integer; publicstaticfunctionisInteger(char:String):Boolean if(char=null) returnfalse; char=trim(char); varpattern:RegExp=/-+?d+$/; varresult:Object=pattern.exec(char); if(result=null) returnfalse; returntrue; /English; publicstaticfunctionisEnglish(char:String):Boolean if(char=null) returnfalse; char=trim(char); varpattern:RegExp=/A-Za-z+$/; varresult:Object=pattern.exec(char); if(result=null) returnfalse; returntrue; /中文; publicstaticfunctionisChinese(char:String):Boolean if(char=null) returnfalse; char=trim(char); varpattern:RegExp=/u0391-uFFE5+$/; varresult:Object=pattern.exec(char); if(result=null) returnfalse; returntrue; /双字节 publicstaticfunctionisDoubleChar(char:String):Boolean if(char=null) returnfalse; char=trim(char); varpattern:RegExp=/x00-xff+$/; varresult:Object=pattern.exec(char); if(result=null) returnfalse; returntrue; /含有中文字符 publicstaticfunctionhasChineseChar(char:String):Boolean if(char=null) returnfalse; char=trim(char); varpattern:RegExp=/x00-xff/; varresult:Object=pattern.exec(char); if(result=null) returnfalse; returntrue; /注册字符; publicstaticfunctionhasAccountChar(char:String,len:uint=15):Boolean if(char=null) returnfalse; if(len10) len=15; char=trim(char); varpattern:RegExp=newRegExp(a-zA-Z0-9a-zA-Z0-9_-0,+len+$,); varresult:Object=pattern.exec(char); if(result=null) returnfalse; returntrue; /URL地址; publicstaticfunctionisURL(char:String):Boolean if(char=null) returnfalse; char=trim(char).toLowerCase(); varpattern:RegExp=/http:/A-Za-z0-9+.A-Za-z0-9+/=?%-&_:+!*()*$/; varresult:Object=pattern.exec(char); if(result=null) returnfalse; returntrue; /是否为空白; publicstaticfunctionisWhitespace(char:String):Boolean switch(char) case: caset: caser: casen: casef: returntrue; default: returnfalse; /去左右空格; publicstaticfunctiontrim(char:String):String if(char=null) returnnull; returnrtrim(ltrim(char); /去左空格; publicstaticfunctionltrim(char:String):String if(char=null) returnnull; varpattern:RegExp=/s*/; returnchar.replace(pattern,); /去右空格; publicstaticfunctionrtrim(char:String):String if(char=null) returnnull; varpattern:RegExp=/s*$/; returnchar.replace(pattern,); /是否为前缀字符串; publicstaticfunctionbeginsWith(char:String,prefix:String):Boolean return(prefix=char.substring(0,prefix.length); /是否为后缀字符串; publicstaticfunctionendsWith(char:String,suffix:String):Boolean return(suffix=char.substring(char.length-suffix.length); /去除指定字符串; publicstaticfunctionremove(char:String,remove:String):String returnreplace(char,remove,); /字符串替换; publicstaticfunctionreplace(char:String,replace:String,replaceWith:String):String returnchar.split(replace).join(replaceWith); /utf16转utf8编码; publicstaticfunctionutf16to8(char:String):String varout:Array=newArray(); varlen:uint=char.length; for(vari:uint=0;i=0x0001&c0x07FF) outi=String.fromCharCode(0xE0|(c12)&0x0F),0x80|(c6)&0x3F),0x80|(c0)&0x3F); else outi=String.fromCharCode(0xC0|(c6)&0x1F),0x80|(c0)&0x3F); returnout.join(); /utf8转utf16编码; publicstaticfunctionutf8to16(char:String):String varout:Array=newArray(); varlen:uint=char.length; vari:uint=0; while(i4) case0: case1: case2: case3: case4: case5: case6: case7: /0xxxxxxx outout.length=char.charAt(i-1); break; case12: case13: /110xxxxx10xxxxxx varchar2:int=char.charCodeAt(i+); outout.length=String.fromCharCode(c&0x1F)6)|(char2&0x3F); break; case14: /1110xxxx10xxxxxx10xxxxxx varchar3:int=char.charCodeAt(i+); varchar4:int=char.charCodeAt(i+); outout.length=String.fromCharCode(c&0x0F)12)|(char3&0x3F)6)|(char4&0x3F)0); break; returnout.join(); publicstaticfunctionautoReturn(str:String,c:int):String varl:int=str.length; if(l0) return; vari:int=c; varr:String=str.substr(0,i); while(i=l) r+=n; r+=str.substr(i,c); i+=c; returnr; publicstaticfunctionlimitStringLengthByByteCount(str:String,bc:int,strExt:String=.):String if(str=null|str=) returnstr; else varl:int=str.length; varc:int=0; varr:String=; for(vari:int=0;i0xffffff) c+=4; elseif(code0xffff) c+=3; elseif(code0xff) c+=2; else +c; if(cbc) r+=str.charAt(i); elseif(c=bc) r+=str.charAt(i); r+=strExt; break; else r+=strExt; break; returnr; publicstaticfunctiongetCharsArray(targetString:String,hasBlankSpace:Boolean):Array vartempString:String=targetString; if(hasBlankSpace=false) tempString=trim(targetString); returntempString.split(); privatestaticvarCHINESE_MAX:Number=0x9FFF; privatestaticvarCHINESE_MIN:Number=0x4E00; privatestaticvarLOWER_MAX:Number=0x007A; privatestaticvarLOWER_MIN:Number=0x0061; privatestaticvarNUMBER_MAX:Number=0x0039; privatestaticvarNUMBER_MIN:Number=0x0030; privatestaticvarUPPER_MAX:Number=0x005A; privatestaticvarUPPER_MIN:Number=0x0041; /* *返回一段字符串的字节长度（汉字一个字占2，其他占1） */ publicstaticfunctiongetStringBytes(str:String):int returngetStrActualLen(str); /*varn:int=0; varl:int=str.length; for(vari:int=0;i=CHINESE_MIN&code=CHINESE_MAX) n+=2; else +n; returnn;*/ /* *按字节长度截取字符串（汉字一个字占2，其他占1） */ publicstaticfunctionsubstrByByteLen(str:String,len:int):String if(str=|str=null) returnstr; varn:int=0; varl:int=str.length; for(vari:int=0;ilen) str=str.substr(0,i-1); break; returnstr; /* *返回一段字符串的字节长度 */ /*publicstaticfunctiongetStringByteLength(str:String):int if(str=null) return0; vart:ByteArray=newByteArray(); t.writeUTFBytes(str); returnt.length; */ publicstaticfunctiongetStrActualLen(sChars:String):int if(sChars=|sChars=null) return0; else returnsChars.replace(/x00-xff/g,xx).length; publicstaticfunctionisEmptyString(str:String):Boolean returnstr=null|str=; privatestaticvarNEW_LINE_REPLACER:String=String.fromCharCode(6); publicstaticfunctionisNewlineOrEnter(code:uint):Boolean returncode=13|code=10; publicstaticfunctionremoveNewlineOrEnter(str:String):String str=replace(str,n,); returnreplace(str,r,); /* *替换掉文本中的n为7 */ publicstaticfunctionescapeNewline(txt:String):String returnreplace(txt,n,NEW_LINE_REPLACER); /* *替换掉文本中的7为n */ publicstaticfunctionunescapeNewline(txt:String):String returnreplace(txt,NEW_LINE_REPLACER,n); /* *判断哪些是全角字符,如果不含有返回空 */ publicstaticfunctionjudge(s:String):String vartemps:String=; varisContainQj:Boolean=false; for(vari:Number=0;i3) temps+=+s.substring(i,i+1)+; isContainQj=true; if(isContainQj) temps; returntemps; /* *汉字、全角数字和全角字母都是双字节码，第一个字节的值减去160表示该字在字库中的区 码，第二个