node-print
Version:
365 lines (335 loc) • 10.5 kB
JavaScript
/*
Print Tool
1. printf in JavaScript
2. Prettify log's color
3. Prettify JSONArray to table
4. Simple date format
External links
http://en.wikipedia.org/wiki/Printf_format_string
*/
/*
工具函数
*/
exports.isString = function(obj) {
return Object.prototype.toString.call(obj) === '[object String]';
}
exports.isDate = function(obj) {
return Object.prototype.toString.call(obj) === '[object Date]';
}
/*
重复打印
*/
exports.repln = function(str, n) {
var re = '';
for (var i = 0; i < n; i++) {
re += str;
}
console.log(re);
return exports;
}
/*
等价于 console.log，增加对日期的格式化
exports.pln(obj[, obj])
exports.pln(date[, date], format)
*/
exports.pln = function(args) {
args = [].slice.call(arguments, 0);
// exports.pln(date [, date], format);
if (exports.isDate(args[0]) && exports.isString(args[args.length - 1])) {
for (var i = 0; i < args.length - 1; i++) {
args[i] = exports.format(args[i], args[args.length - 1]);
}
console.log.apply({}, args.slice(0, args.length - 1));
// exports.pln(obj [, obj])
} else {
console.log.apply({}, arguments);
}
return exports;
}
/*
printf
exports.pf(format, args)
format
%-ms - String
%-m.nd - Number (both integer and float)
%-mj - JSON
*/
exports.pf = exports.printf = function pf(format, args) {
var rformat = /%([-+]?)(\d+)?(?:\.?(\d+)?)(s|d)/ig,
out;
// 参数 format 不是字符串，或者不含有格式标记，则不做格式化，直接输出
if (typeof format !== 'string' || !format.match(rformat)) {
console.log.apply({}, arguments);
return exports;
}
// 格式化
args = [].slice.call(arguments, 1);
var index = 0;
out = format.replace(rformat, function(match, dir, m, n, flag) {
// console.log(match, dir, m, n, flag);
var arg = args[index++] + '',
prefix = '',
suffix = '';
switch (flag) {
case 's':
break;
case 'd':
var indexOf = arg.indexOf('.');
if (n && ~indexOf) arg = arg.slice(0, indexOf + 1 + parseInt(n));
break;
case 'j':
arg = JSON.stringify(arg);
break;
}
// dir m
var fix = parseInt(m) - arg.length;
for (var i = 0; i < fix; i++) {
dir === '-' ? suffix += ' ' : prefix += ' ';
}
return prefix + arg + suffix;
})
console.log(out);
return exports;
}
/*
color
*/
var styles = {
//styles
'bold': ['\033[1m', '\033[22m'],
'italic': ['\033[3m', '\033[23m'],
'underline': ['\033[4m', '\033[24m'],
'inverse': ['\033[7m', '\033[27m'],
//grayscale
'white': ['\033[37m', '\033[39m'],
'grey': ['\033[90m', '\033[39m'],
'black': ['\033[30m', '\033[39m'],
//colors
'blue': ['\033[34m', '\033[39m'],
'cyan': ['\033[36m', '\033[39m'],
'green': ['\033[32m', '\033[39m'],
'magenta': ['\033[35m', '\033[39m'],
'red': ['\033[31m', '\033[39m'],
'yellow': ['\033[33m', '\033[39m']
};
for (var style in styles) {
(function(style) {
String.prototype.__defineGetter__(style, function() {
return styles[style][0] + this + styles[style][1];
});
exports[style] = function(str) {
console.log(styles[style][0] + str + styles[style][1]);
return exports;
}
})(style)
}
exports.color = function(style, str) {
console.log(styles[style][0] + str + styles[style][1]);
};
/*
date
*/
exports.patterns = {
ISO8601Long: "yyyy-MM-dd HH:mm:ss",
ISO8601Short: "y-m-d"
};
exports.rpatterns = {
ISO8601Long: function(sdate) {
var m = /(\d+)-(\d+)-(\d+) (\d+):(\d+):(\d+)/.exec(sdate);
// var d = new Date(year, month, day, hours, minutes, seconds, milliseconds);
return new Date(m[1], m[2], m[3], m[4], m[5], m[6]);
},
ISO8601Short: function(sdate) {
var m = /(\d+)-(\d+)-(\d+)/.exec(sdate);
return new Date(m[1], m[2], m[3]);
}
}
// http://docs.oracle.com/javase/1.4.2/docs/api/java/text/SimpleDateFormat.html
// http://docs.sencha.com/ext-js/4-1/#!/api/Ext.Date
/*
Format Description Example
------- ----------------------------------------------------------- -------
yyyy A full numeric representation of a year, 4 digits 1999 or 2003
yy A two digit representation of a year 99 or 03
y A two digit representation of a year 99 or 03
MM Numeric representation of a month, with leading zeros 01 to 12
M Numeric representation of a month, without leading zeros 1 to 12
dd Day of the month, 2 digits with leading zeros 01 to 31
d Day of the month without leading zeros 1 to 31
HH 24-hour format of an hour with leading zeros 00 to 23
H 24-hour format of an hour without leading zeros 0 to 23
hh 12-hour format of an hour without leading zeros 1 to 12
h 12-hour format of an hour with leading zeros 01 to 12
mm Minutes, with leading zeros 00 to 59
m Minutes, without leading zeros 0 to 59
ss Seconds, with leading zeros 00 to 59
s Seconds, without leading zeros 0 to 59
SS Milliseconds, with leading zeros 000 to 999
S Milliseconds, without leading zeros 0 to 999
A Uppercase Ante meridiem and Post meridiem AM or PM
a Lowercase Ante meridiem and Post meridiem am or pm
*/
var patternLetters = {
yyyy: 'getFullYear',
yy: function(date) {
return ('' + date.getFullYear()).slice(2);
},
y: 'yy',
MM: function(date) {
var m = date.getMonth() + 1;
return m < 10 ? '0' + m : m;
},
M: function(date) {
return date.getMonth() + 1;
},
dd: function(date) {
var d = date.getDate();
return d < 10 ? '0' + d : d;
},
d: 'getDate',
HH: function(date) {
var h = date.getHours();
return h < 10 ? '0' + h : h;
},
H: 'getHours',
hh: function(date) {
var h = date.getHours() % 12;
return h < 10 ? '0' + h : h;
},
h: function(date) {
return date.getHours() % 12;
},
mm: function(date) {
var m = date.getMinutes();
return m < 10 ? '0' + m : m;
},
m: 'getMinutes',
ss: function(date) {
var s = date.getSeconds();
return s < 10 ? '0' + s : s;
},
s: 'getSeconds',
SS: function(date) {
var ms = date.getMilliseconds();
return ms < 10 && '00' + ms || ms < 100 && '0' + ms || ms
},
S: 'getMilliseconds',
A: function(date) {
return date.getHours() < 12 ? 'AM' : 'PM'
},
a: function(date) {
return date.getHours() < 12 ? 'am' : 'pm'
}
}
var rformat = new RegExp((function() {
var re = [];
for (var i in patternLetters) re.push(i);
return '(' + re.join('|') + ')';
})(), 'g');
// 格式化日期
exports.format = function(date, format) {
format = format.replace(rformat, function($0, flag) {
return typeof patternLetters[flag] === 'function' ? patternLetters[flag](date) : patternLetters[flag] in patternLetters ? arguments.callee($0, patternLetters[flag]) : date[patternLetters[flag]]()
});
// console.log(format);
return format;
};
// 解析日期
exports.parse = function(sdate, format) {
return exports.rpatterns[format](sdate);
};
exports._parse = function(sdate, format) {
/*
1. 替换标记为正则分组，记录标记和分组的映射关系
2. 生成解析正则，解析日期字符串
3. 按照标记和分组的映射关系，解析出标记对应的值
4. 构造 Date 对象。
TODO
*/
};
/*
table
*/
exports.pt = exports.printTable = function(rs) {
if (!rs || !rs.length) return;
var style = genStyle(rs);
var devider = genDevider(style);
var th = genTh(style);
var trs = genTr(rs, style);
// console.log(style);
console.log(devider);
console.log(th);
console.log(devider);
for (var tr in trs) {
console.log(trs[tr]);
}
console.log(devider);
return exports;
}
function getLen(o) {
var rcjk = /[\u2E80-\u2EFF\u2F00-\u2FDF\u3000-\u303F\u31C0-\u31EF\u3200-\u32FF\u3300-\u33FF\u3400-\u4DBF\u4DC0-\u4DFF\u4E00-\u9FBF\uF900-\uFAFF\uFE30-\uFE4F\uFF00-\uFFEF]+/g;
o = '' + o;
var re = 0;
for (var i = 0; i < o.length; i++) {
if (o[i].match(rcjk)) re += 2;
else re += 1;
}
return re;
}
function genStyle(rs) {
var style = {};
// init
for (var r in rs) {
for (var key in rs[r]) {
style[key] = getLen(key);
}
}
// calculate max width of a colume
var width = 0;
for (var key in style) {
for (var r in rs) {
width = getLen(rs[r][key]);
style[key] = width > style[key] ? width : style[key];
}
}
return style;
}
function genDevider(style) {
var devider = '+';
for (var key in style) {
for (var i = 0; i < style[key] + 2; i++) {
devider += '-';
}
devider += '+';
}
return devider;
}
function genTh(style) {
var header = '|';
for (var key in style) {
header += ' ';
header += key;
for (var i = 0; i < style[key] + 2 - 1 - getLen(key); i++) {
header += ' ';
}
header += '|';
}
return header;
}
function genTr(rs, style) {
var trs = [];
var tr;
for (var r in rs) {
tr = '|';
for (var key in style) {
tr += ' ';
tr += rs[r][key];
for (var i = 0; i < style[key] + 2 - 1 - getLen(rs[r][key]); i++) {
tr += ' ';
}
tr += '|';
}
trs.push(tr);
}
return trs;
}