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Rewrite XML Formatter

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This commit is contained in:
Josh Johnson 2015-12-02 12:41:29 -05:00
parent eb057dea2c
commit 99c1a62655
1 changed files with 22 additions and 62 deletions
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84
src/features/xmlFormatting.ts
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@ -53,78 +53,38 @@ function _linearizeXml(xml: string): string {
}
function _formatXml(xml: string, options: FormattingOptions): string {
/* This code was taken from https://github.com/vkiryukhin/pretty-data/blob/master/pretty-data.js
* and refactored to fit our needs for this extension. pretty-data is dual-licensed (MIT/GPL).
*/
let parts = _linearizeXml(xml)
.replace(/</g,"~::~<")
.replace(/xmlns\:/g,"~::~xmlns:")
.replace(/xmlns\=/g,"~::~xmlns=")
.split('~::~');
let tab = _strRepeat(' ', options.tabSize);
let deep = 0;
let output = '';
let formatted = false;
let level = 0;
for (let i = 0; i < parts.length; i++) {
// linearize the xml first for a consistent starting point
xml = _linearizeXml(xml);
// start comment, CDATA, or DOCTYPE
if (parts[i].search(/<!/) > -1) {
output += _strRepeat(tab, deep) + parts[i];
formatted = true;
// put each tag on its own line
xml = xml.replace(/></g, '>\n<');
// end comment, CDATA, or DOCTYPE
if (parts[i].search(/-->/) > -1 || parts[i].search(/\]>/) > -1 || parts[i].search(/!DOCTYPE/) > -1) {
formatted = false;
}
// iterate over each line and plug in tabs
let tokens = xml.split('\n');
for (let i = 0; i < tokens.length; i++) {
let line = tokens[i];
// start tags
let startMatch = /<[\w\d]+[^\/]*>/.exec(line);
if (startMatch !== null && startMatch[0] == line) {
output += _strRepeat(tab, level++) + line + '\n';
continue;
}
// end comment or CDATA
else if (parts[i].search(/-->/) > -1 || parts[i].search(/\]>/) > -1) {
output += parts[i];
formatted = false;
}
// <elm></elm>
else if (/^<\w/.exec(parts[i - 1]) && /^<\/\w/.exec(parts[i]) && (/^<[\w:\-\.\,]+/.exec(parts[i - 1])[0] == /^<\/[\w:\-\.\,]+/.exec(parts[i])[0].replace('/','')) {
output += parts[i];
if (!formatted) deep--;
}
// <elm>
else if (parts[i].search(/<\w/) > -1 && parts[i].search(/<\//) == -1 && parts[i].search(/\/>/) == -1 ) {
output = !formatted ? output += _strRepeat(tab, deep++) + parts[i] : output += parts[i];
}
// <elm>...</elm>
else if (parts[i].search(/<\w/) > -1 && parts[i].search(/<\//) > -1) {
output = !formatted ? output += _strRepeat(tab, deep) + parts[i] : output += parts[i];
}
// </elm>
else if (parts[i].search(/<\//) > -1) {
output = !formatted ? output += _strRepeat(tab, --deep) + parts[i] : output += parts[i];
}
// <elm/>
else if (parts[i].search(/\/>/) > -1) {
output = !formatted ? output += _strRepeat(tab, deep) + parts[i] : output += parts[i];
}
// <?xml ... ?>
else if (parts[i].search(/<\?/) > -1) {
output += _strRepeat(tab, deep) + parts[i];
}
// xmlns
else if (parts[i].search(/xmlns\:/) > -1 || parts[i].search(/xmlns\=/) > -1) {
output += _strRepeat(tab, deep) + parts[i];
// close tags
let closeMatch = /<\s*\/\s*[\w\d]+>/.exec(line);
if (closeMatch !== null && closeMatch[0] == line) {
output += _strRepeat(tab, --level) + line + '\n';
}
// one-liners (items that do not affect level)
else {
output += parts[i];
output += _strRepeat(tab, level) + line + '\n';
}
}