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blog名称:人在旅途
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建立时间:2005年12月7日 |
生命是过客，人在旅途。奶奶是信基督教的，没啥文化，却养育了四子二女，还带过九个孙辈。老人家对生命的看法就是“人都是客人，迟早要回去的。”就以《人在旅途》来纪念她。
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本人上传的源程序中可能引用或使用了第三方的库或程序,也可能是修改了第三方的例程甚至是源程序.所以本人上传的源程序禁止在以单纯学习为目的的任何以外场合使用,不然如果引起任何版权问题,本人不负任何责任. | |
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调整中...
 [Web2.0]一个很好的JavaScript的库--加解密,ZIP-UNZIP...  |
人在旅途 发表于 2006/7/7 16:05:48 |
地址:高度な JavaScript 技集
列:sprintf函数:// printf.js - version 1.1.0
//
// Copyright (C) 2000-2002 Masanao Izumo <iz@onicos.co.jp>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
//
// SYNOPSIS:
// printf("format", ...);
// str = sprintf("format", ...);
//
// Chages:
// 2002-02-04 Masanao Izumo <mo@goice.co.jp>
// - Fixed bug about sprintf("%%") will return "%%".
// - Evaluate undefined "%" argument. That is:
// numerical value ===> 0 (%d, %x, %o, etc)
// string value ===> '' (%s)
// printf(format, ...);
function printf() {
document.write(va_sprintf(printf.arguments));
}
// str = sprintf(format, ...);
function sprintf() {
return va_sprintf(sprintf.arguments);
}
function va_sprintf(args) {
var ch;
var value;
var longflag;
var ljust;
var len, llen;
var zpad;
var p;
var output;
var format_index, arg_index;
var argc, argv;
var specin;
var format;
output = '';
format_index = 0;
arg_index = 1;
argv = args;
argc = args.length;
format = args[0];
while (format_index < format.length) {
ch = format.substr(format_index++, 1);
if (ch != '%' || format_index == format.length) {
output += ch;
} else {
// ch == '%'
ljust = len = zpad = longflag = 0;
llen = -1;
p = format_index;
specin = true;
while (specin) {
ch = format.substr(format_index++, 1);
switch(ch) {
case '-':
ljust = 1;
continue;
case '0': // set zero padding if len not set
if(len == 0)
zpad = 1;
// FALLTHROUGH
case '1': case '2': case '3':
case '4': case '5': case '6':
case '7': case '8': case '9':
len = len * 10 + parseInt(ch);
continue;
case '.':
llen = len;
len = 0;
continue;
case '*':
if (arg_index < argc)
len = parseInt(argv[arg_index++]);
else
len = 0;
if (len < 0) {
ljust = 1;
len = -len;
}
continue;
case 'l':
longflag = 1;
continue;
case 'u': case 'U':
if (arg_index < argc) {
if (longflag) {
value = parseInt(argv[arg_index++]);
} else {
value = parseInt(argv[arg_index++]);
value %= 4294967296;
}
} else {
value = 0;
}
output += _dopr_fmtnum(value, 10,0, ljust, len, zpad);
break;
case 'o': case 'O':
if (arg_index < argc) {
if (longflag) {
value = parseInt(argv[arg_index++]);
} else {
value = parseInt(argv[arg_index++]);
value %= 4294967296;
}
} else {
value = 0;
}
output += _dopr_fmtnum(value, 8,0, ljust, len, zpad);
break;
case 'd': case 'D':
if (arg_index < argc) {
if (longflag) {
value = parseInt(argv[arg_index++]);
} else {
value = parseInt(argv[arg_index++]);
value %= 4294967296;
}
} else {
value = 0;
}
output += _dopr_fmtnum(value, 10,1, ljust, len, zpad);
break;
case 'x':
if (arg_index < argc) {
if (longflag) {
value = parseInt(argv[arg_index++]);
} else {
value = parseInt(argv[arg_index++]);
value %= 4294967296;
}
} else {
value = 0;
}
output += _dopr_fmtnum(value, 16,0, ljust, len, zpad);
break;
case 'X':
if (arg_index < argc) {
if (longflag) {
value = parseInt(argv[arg_index++]);
} else {
value = parseInt(argv[arg_index++]);
value %= 4294967296;
}
} else {
value = 0;
}
output += _dopr_fmtnum(value, -16,0, ljust, len, zpad);
break;
case 's':
if (arg_index < argc) {
value = argv[arg_index++];
if(value == null)
value = "(null)";
else
value = value + ""; // toString
} else {
value = '';
}
output += _dopr_fmtstr(value, ljust, len, llen);
break;
case 'c':
if (arg_index < argc) {
value = parseInt(argv[arg_index++]);
} else {
value = 0;
}
output += _dopr_fromCharCode(value);
break;
case '%':
output += '%';
break;
/* Not supported
case 'f': case 'e': case 'E': case 'g': case 'G':
if (arg_index < argc) {
value = argv[arg_index++];
} else {
value = 0.0;
}
output += _dopr_fmtdouble(format.substr(p, format_index - p), value);
break;
*/
default:
if(p + 1 == format_index) {
output += '%';
output += ch;
}
else {
// alert("format error: " + format);
}
break;
}
specin = false;
}
}
}
return output;
}
// Private function
function _dopr_fmtnum(value, base, dosign, ljust, len, zpad)
{
var signvalue = '';
var uvalue;
var place = 0;
var padlen; // amount to pad
var caps = 0;
var convert;
var output;
convert = '';
output = '';
if(value >= 0)
uvalue = value;
else
uvalue = (value % 4294967296) + 4294967296;
if (dosign) {
if (value < 0) {
signvalue = '-';
uvalue = -value;
}
}
if (base < 0) {
caps = 1;
base = -base;
}
if(uvalue == 0) {
convert = '0';
place = 1;
} else {
while (uvalue) {
if(caps)
convert = '0123456789ABCDEF'.substr(uvalue % base, 1) + convert;
else
convert = '0123456789abcdef'.substr(uvalue % base, 1) + convert;
uvalue = parseInt(uvalue / base);
place++;
}
}
padlen = len - place;
if (padlen < 0) padlen = 0;
if (ljust) padlen = -padlen;
if (zpad && padlen > 0) {
if(signvalue) {
output += signvalue;
--padlen;
signvalue = 0;
}
while (padlen > 0) {
output += '0';
--padlen;
}
}
while (padlen > 0) {
output += ' ';
--padlen;
}
if (signvalue) {
output += signvalue;
}
output += convert;
while(padlen < 0) {
output += ' ';
++padlen;
}
return output;
}
// Private function
function _dopr_fmtstr(value, ljust, field_len, llen)
{
var padlen; // amount to pad
var slen, truncstr = 0;
var output = '';
slen = value.length;
if (llen != -1) {
var rlen;
rlen = field_len;
if (slen > rlen) {
truncstr = 1;
slen = rlen;
}
field_len = llen;
}
padlen = field_len - slen;
if (padlen < 0)
padlen = 0;
if (ljust)
padlen = -padlen;
while (padlen > 0) {
output += ' ';
--padlen;
}
if (truncstr) {
output += value.substr(0, slen);
} else {
output += value;
}
while (padlen < 0) {
output += ' ';
++padlen;
}
return output;
}
// Private function
var _dopr_fromCharCode_chars = null;
function _dopr_fromCharCode(code)
{
if(String.fromCharCode)
return String.fromCharCode(code);
if(!_dopr_fromCharCode_chars)
_dopr_fromCharCode_chars =
"\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020" +
"\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037 !\"#$%&" +
"'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghi" +
"jklmnopqrstuvwxyz{|}~\177\200\201\202\203\204\205\206\207\210\211" +
"\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232" +
"\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253" +
"\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274" +
"\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315" +
"\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336" +
"\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357" +
"\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377";
if(code < 0)
return "";
if(code <= 255)
return _dopr_fromCharCode_chars.substr(code, 1);
return eval(sprintf("\"\\u%04x\"", code));
}
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| 回复:一个很好的JavaScript的库--加解密,ZIP-UNZIP... |
|
WWWW(游客)发表评论于2010/1/22 2:44:34 |
这是啥啊
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