pretty-data
Version:
plugin to pretty-print or minify XML, JSON, CSS and SQL files
345 lines (292 loc) • 10.2 kB
JavaScript
/**
* pretty-data - nodejs plugin to pretty-print or minify data in XML, JSON and CSS formats.
*
* Version - 0.40.0
* Copyright (c) 2012 Vadim Kiryukhin
* vkiryukhin @ gmail.com
* http://www.eslinstructor.net/pretty-data/
*
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
* pd.xml(data ) - pretty print XML;
* pd.json(data) - pretty print JSON;
* pd.css(data ) - pretty print CSS;
* pd.sql(data) - pretty print SQL;
*
* pd.xmlmin(data [, preserveComments] ) - minify XML;
* pd.jsonmin(data) - minify JSON;
* pd.cssmin(data [, preserveComments] ) - minify CSS;
* pd.sqlmin(data) - minify SQL;
*
* PARAMETERS:
*
* @data - String; XML, JSON, CSS or SQL text to beautify;
* @preserveComments - Bool (optional, used in minxml and mincss only);
* Set this flag to true to prevent removing comments from @text;
* @Return - String;
*
* USAGE:
*
* var pd = require('pretty-data').pd;
*
* var xml_pp = pd.xml(xml_text);
* var xml_min = pd.xmlmin(xml_text [,true]);
* var json_pp = pd.json(json_text);
* var json_min = pd.jsonmin(json_text);
* var css_pp = pd.css(css_text);
* var css_min = pd.cssmin(css_text [, true]);
* var sql_pp = pd.sql(sql_text);
* var sql_min = pd.sqlmin(sql_text);
*
* TEST:
* comp-name:pretty-data$ node ./test/test_xml
* comp-name:pretty-data$ node ./test/test_json
* comp-name:pretty-data$ node ./test/test_css
* comp-name:pretty-data$ node ./test/test_sql
*/
function pp() {
this.shift = ['\n']; // array of shifts
this.step = ' ', // 2 spaces
maxdeep = 100, // nesting level
ix = 0;
// initialize array with shifts //
for(ix=0;ix<maxdeep;ix++){
this.shift.push(this.shift[ix]+this.step);
}
};
// ----------------------- XML section ----------------------------------------------------
pp.prototype.xml = function(text) {
var ar = text.replace(/>\s{0,}</g,"><")
.replace(/</g,"~::~<")
.replace(/xmlns\:/g,"~::~xmlns:")
.replace(/xmlns\=/g,"~::~xmlns=")
.split('~::~'),
len = ar.length,
inComment = false,
deep = 0,
str = '',
ix = 0;
for(ix=0;ix<len;ix++) {
// start comment or <![CDATA[...]]> or <!DOCTYPE //
if(ar[ix].search(/<!/) > -1) {
str += this.shift[deep]+ar[ix];
inComment = true;
// end comment or <![CDATA[...]]> //
if(ar[ix].search(/-->/) > -1 || ar[ix].search(/\]>/) > -1 || ar[ix].search(/!DOCTYPE/) > -1 ) {
inComment = false;
}
} else
// end comment or <![CDATA[...]]> //
if(ar[ix].search(/-->/) > -1 || ar[ix].search(/\]>/) > -1) {
str += ar[ix];
inComment = false;
} else
// <elm></elm> //
if( /^<\w/.exec(ar[ix-1]) && /^<\/\w/.exec(ar[ix]) &&
/^<[\w:\-\.\,]+/.exec(ar[ix-1]) == /^<\/[\w:\-\.\,]+/.exec(ar[ix])[0].replace('/','')) {
str += ar[ix];
if(!inComment) deep--;
} else
// <elm> //
if(ar[ix].search(/<\w/) > -1 && ar[ix].search(/<\//) == -1 && ar[ix].search(/\/>/) == -1 ) {
str = !inComment ? str += this.shift[deep++]+ar[ix] : str += ar[ix];
} else
// <elm>...</elm> //
if(ar[ix].search(/<\w/) > -1 && ar[ix].search(/<\//) > -1) {
str = !inComment ? str += this.shift[deep]+ar[ix] : str += ar[ix];
} else
// </elm> //
if(ar[ix].search(/<\//) > -1) {
str = !inComment ? str += this.shift[--deep]+ar[ix] : str += ar[ix];
} else
// <elm/> //
if(ar[ix].search(/\/>/) > -1 ) {
str = !inComment ? str += this.shift[deep]+ar[ix] : str += ar[ix];
} else
// <? xml ... ?> //
if(ar[ix].search(/<\?/) > -1) {
str += this.shift[deep]+ar[ix];
} else
// xmlns //
if( ar[ix].search(/xmlns\:/) > -1 || ar[ix].search(/xmlns\=/) > -1) {
str += this.shift[deep]+ar[ix];
}
else {
str += ar[ix];
}
}
return (str[0] == '\n') ? str.slice(1) : str;
}
// ----------------------- JSON section ----------------------------------------------------
pp.prototype.json = function(text) {
if ( typeof text === "string" ) {
return JSON.stringify(JSON.parse(text), null, this.step);
}
if ( typeof text === "object" ) {
return JSON.stringify(text, null, this.step);
}
return null;
}
// ----------------------- CSS section ----------------------------------------------------
pp.prototype.css = function(text) {
var ar = text.replace(/\s{1,}/g,' ')
.replace(/\{/g,"{~::~")
.replace(/\}/g,"~::~}~::~")
.replace(/\;/g,";~::~")
.replace(/\/\*/g,"~::~/*")
.replace(/\*\//g,"*/~::~")
.replace(/~::~\s{0,}~::~/g,"~::~")
.split('~::~'),
len = ar.length,
deep = 0,
str = '',
ix = 0;
for(ix=0;ix<len;ix++) {
if( /\{/.exec(ar[ix])) {
str += this.shift[deep++]+ar[ix];
} else
if( /\}/.exec(ar[ix])) {
str += this.shift[--deep]+ar[ix];
} else
if( /\*\\/.exec(ar[ix])) {
str += this.shift[deep]+ar[ix];
}
else {
str += this.shift[deep]+ar[ix];
}
}
return str.replace(/^\n{1,}/,'');
}
// ----------------------- SQL section ----------------------------------------------------
function isSubquery(str, parenthesisLevel) {
return parenthesisLevel - (str.replace(/\(/g,'').length - str.replace(/\)/g,'').length )
}
function split_sql(str, tab) {
return str.replace(/\s{1,}/g," ")
.replace(/ AND /ig,"~::~"+tab+tab+"AND ")
.replace(/ BETWEEN /ig,"~::~"+tab+"BETWEEN ")
.replace(/ CASE /ig,"~::~"+tab+"CASE ")
.replace(/ ELSE /ig,"~::~"+tab+"ELSE ")
.replace(/ END /ig,"~::~"+tab+"END ")
.replace(/ FROM /ig,"~::~FROM ")
.replace(/ GROUP\s{1,}BY/ig,"~::~GROUP BY ")
.replace(/ HAVING /ig,"~::~HAVING ")
//.replace(/ IN /ig,"~::~"+tab+"IN ")
.replace(/ IN /ig," IN ")
.replace(/ JOIN /ig,"~::~JOIN ")
.replace(/ CROSS~::~{1,}JOIN /ig,"~::~CROSS JOIN ")
.replace(/ INNER~::~{1,}JOIN /ig,"~::~INNER JOIN ")
.replace(/ LEFT~::~{1,}JOIN /ig,"~::~LEFT JOIN ")
.replace(/ RIGHT~::~{1,}JOIN /ig,"~::~RIGHT JOIN ")
.replace(/ ON /ig,"~::~"+tab+"ON ")
.replace(/ OR /ig,"~::~"+tab+tab+"OR ")
.replace(/ ORDER\s{1,}BY/ig,"~::~ORDER BY ")
.replace(/ OVER /ig,"~::~"+tab+"OVER ")
.replace(/\(\s{0,}SELECT /ig,"~::~(SELECT ")
.replace(/\)\s{0,}SELECT /ig,")~::~SELECT ")
.replace(/ THEN /ig," THEN~::~"+tab+"")
.replace(/ UNION /ig,"~::~UNION~::~")
.replace(/ USING /ig,"~::~USING ")
.replace(/ WHEN /ig,"~::~"+tab+"WHEN ")
.replace(/ WHERE /ig,"~::~WHERE ")
.replace(/ WITH /ig,"~::~WITH ")
//.replace(/\,\s{0,}\(/ig,",~::~( ")
//.replace(/\,/ig,",~::~"+tab+tab+"")
.replace(/ ALL /ig," ALL ")
.replace(/ AS /ig," AS ")
.replace(/ ASC /ig," ASC ")
.replace(/ DESC /ig," DESC ")
.replace(/ DISTINCT /ig," DISTINCT ")
.replace(/ EXISTS /ig," EXISTS ")
.replace(/ NOT /ig," NOT ")
.replace(/ NULL /ig," NULL ")
.replace(/ LIKE /ig," LIKE ")
.replace(/\s{0,}SELECT /ig,"SELECT ")
.replace(/~::~{1,}/g,"~::~")
.split('~::~');
}
pp.prototype.sql = function(text) {
var ar_by_quote = text.replace(/\s{1,}/g," ")
.replace(/\'/ig,"~::~\'")
.split('~::~'),
len = ar_by_quote.length,
ar = [],
deep = 0,
tab = this.step,//+this.step,
inComment = true,
inQuote = false,
parenthesisLevel = 0,
str = '',
ix = 0;
for(ix=0;ix<len;ix++) {
if(ix%2) {
ar = ar.concat(ar_by_quote[ix]);
} else {
ar = ar.concat(split_sql(ar_by_quote[ix], tab) );
}
}
len = ar.length;
for(ix=0;ix<len;ix++) {
parenthesisLevel = isSubquery(ar[ix], parenthesisLevel);
if( /\s{0,}\s{0,}SELECT\s{0,}/.exec(ar[ix])) {
ar[ix] = ar[ix].replace(/\,/g,",\n"+tab+tab+"")
}
if( /\s{0,}\(\s{0,}SELECT\s{0,}/.exec(ar[ix])) {
deep++;
str += this.shift[deep]+ar[ix];
} else
if( /\'/.exec(ar[ix]) ) {
if(parenthesisLevel<1 && deep) {
deep--;
}
str += ar[ix];
}
else {
str += this.shift[deep]+ar[ix];
if(parenthesisLevel<1 && deep) {
deep--;
}
}
}
str = str.replace(/^\n{1,}/,'').replace(/\n{1,}/g,"\n");
return str;
}
// ----------------------- min section ----------------------------------------------------
pp.prototype.xmlmin = function(text, preserveComments) {
var str = preserveComments ? text
: text.replace(/\<![ \r\n\t]*(--([^\-]|[\r\n]|-[^\-])*--[ \r\n\t]*)\>/g,"");
return str.replace(/>\s{0,}</g,"><");
}
pp.prototype.jsonmin = function(text) {
return text.replace(/\s{0,}\{\s{0,}/g,"{")
.replace(/\s{0,}\[$/g,"[")
.replace(/\[\s{0,}/g,"[")
.replace(/:\s{0,}\[/g,':[')
.replace(/\s{0,}\}\s{0,}/g,"}")
.replace(/\s{0,}\]\s{0,}/g,"]")
.replace(/\"\s{0,}\,/g,'",')
.replace(/\,\s{0,}\"/g,',"')
.replace(/\"\s{0,}:/g,'":')
.replace(/:\s{0,}\"/g,':"')
.replace(/:\s{0,}\[/g,':[')
.replace(/\,\s{0,}\[/g,',[')
.replace(/\,\s{2,}/g,', ')
.replace(/\]\s{0,},\s{0,}\[/g,'],[');
}
pp.prototype.cssmin = function(text, preserveComments) {
var str = preserveComments ? text
: text.replace(/\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\//g,"") ;
return str.replace(/\s{1,}/g,' ')
.replace(/\{\s{1,}/g,"{")
.replace(/\}\s{1,}/g,"}")
.replace(/\;\s{1,}/g,";")
.replace(/\/\*\s{1,}/g,"/*")
.replace(/\*\/\s{1,}/g,"*/");
}
pp.prototype.sqlmin = function(text) {
return text.replace(/\s{1,}/g," ").replace(/\s{1,}\(/,"(").replace(/\s{1,}\)/,")");
}
// --------------------------------------------------------------------------------------------
exports.pd= new pp;