vue hello world项目
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var systemLineBreak = require('os').EOL;
var override = require('../utils/override');
var Breaks = {
AfterAtRule: 'afterAtRule',
AfterBlockBegins: 'afterBlockBegins',
AfterBlockEnds: 'afterBlockEnds',
AfterComment: 'afterComment',
AfterProperty: 'afterProperty',
AfterRuleBegins: 'afterRuleBegins',
AfterRuleEnds: 'afterRuleEnds',
BeforeBlockEnds: 'beforeBlockEnds',
BetweenSelectors: 'betweenSelectors'
};
var BreakWith = {
CarriageReturnLineFeed: '\r\n',
LineFeed: '\n',
System: systemLineBreak
};
var IndentWith = {
Space: ' ',
Tab: '\t'
};
var Spaces = {
AroundSelectorRelation: 'aroundSelectorRelation',
BeforeBlockBegins: 'beforeBlockBegins',
BeforeValue: 'beforeValue'
};
var DEFAULTS = {
breaks: breaks(false),
breakWith: BreakWith.System,
indentBy: 0,
indentWith: IndentWith.Space,
spaces: spaces(false),
wrapAt: false,
semicolonAfterLastProperty: false
};
var BEAUTIFY_ALIAS = 'beautify';
var KEEP_BREAKS_ALIAS = 'keep-breaks';
var OPTION_SEPARATOR = ';';
var OPTION_NAME_VALUE_SEPARATOR = ':';
var HASH_VALUES_OPTION_SEPARATOR = ',';
var HASH_VALUES_NAME_VALUE_SEPARATOR = '=';
var FALSE_KEYWORD_1 = 'false';
var FALSE_KEYWORD_2 = 'off';
var TRUE_KEYWORD_1 = 'true';
var TRUE_KEYWORD_2 = 'on';
function breaks(value) {
var breakOptions = {};
breakOptions[Breaks.AfterAtRule] = value;
breakOptions[Breaks.AfterBlockBegins] = value;
breakOptions[Breaks.AfterBlockEnds] = value;
breakOptions[Breaks.AfterComment] = value;
breakOptions[Breaks.AfterProperty] = value;
breakOptions[Breaks.AfterRuleBegins] = value;
breakOptions[Breaks.AfterRuleEnds] = value;
breakOptions[Breaks.BeforeBlockEnds] = value;
breakOptions[Breaks.BetweenSelectors] = value;
return breakOptions;
}
function spaces(value) {
var spaceOptions = {};
spaceOptions[Spaces.AroundSelectorRelation] = value;
spaceOptions[Spaces.BeforeBlockBegins] = value;
spaceOptions[Spaces.BeforeValue] = value;
return spaceOptions;
}
function formatFrom(source) {
if (source === undefined || source === false) {
return false;
}
if (typeof source == 'object' && 'breakWith' in source) {
source = override(source, { breakWith: mapBreakWith(source.breakWith) });
}
if (typeof source == 'object' && 'indentBy' in source) {
source = override(source, { indentBy: parseInt(source.indentBy) });
}
if (typeof source == 'object' && 'indentWith' in source) {
source = override(source, { indentWith: mapIndentWith(source.indentWith) });
}
if (typeof source == 'object') {
return remapBreaks(override(DEFAULTS, source));
}
if (typeof source == 'string' && source == BEAUTIFY_ALIAS) {
return remapBreaks(
override(DEFAULTS, {
breaks: breaks(true),
indentBy: 2,
spaces: spaces(true)
})
);
}
if (typeof source == 'string' && source == KEEP_BREAKS_ALIAS) {
return remapBreaks(
override(DEFAULTS, {
breaks: {
afterAtRule: true,
afterBlockBegins: true,
afterBlockEnds: true,
afterComment: true,
afterRuleEnds: true,
beforeBlockEnds: true
}
})
);
}
if (typeof source == 'string') {
return remapBreaks(override(DEFAULTS, toHash(source)));
}
return DEFAULTS;
}
function toHash(string) {
return string
.split(OPTION_SEPARATOR)
.reduce(function (accumulator, directive) {
var parts = directive.split(OPTION_NAME_VALUE_SEPARATOR);
var name = parts[0];
var value = parts[1];
if (name == 'breaks' || name == 'spaces') {
accumulator[name] = hashValuesToHash(value);
} else if (name == 'indentBy' || name == 'wrapAt') {
accumulator[name] = parseInt(value);
} else if (name == 'indentWith') {
accumulator[name] = mapIndentWith(value);
} else if (name == 'breakWith') {
accumulator[name] = mapBreakWith(value);
}
return accumulator;
}, {});
}
function hashValuesToHash(string) {
return string
.split(HASH_VALUES_OPTION_SEPARATOR)
.reduce(function (accumulator, directive) {
var parts = directive.split(HASH_VALUES_NAME_VALUE_SEPARATOR);
var name = parts[0];
var value = parts[1];
accumulator[name] = normalizeValue(value);
return accumulator;
}, {});
}
function normalizeValue(value) {
switch (value) {
case FALSE_KEYWORD_1:
case FALSE_KEYWORD_2:
return false;
case TRUE_KEYWORD_1:
case TRUE_KEYWORD_2:
return true;
default:
return value;
}
}
function mapBreakWith(value) {
switch (value) {
case 'windows':
case 'crlf':
case BreakWith.CarriageReturnLineFeed:
return BreakWith.CarriageReturnLineFeed;
case 'unix':
case 'lf':
case BreakWith.LineFeed:
return BreakWith.LineFeed;
default:
return systemLineBreak;
}
}
function mapIndentWith(value) {
switch (value) {
case 'space':
return IndentWith.Space;
case 'tab':
return IndentWith.Tab;
default:
return value;
}
}
function remapBreaks(source) {
for (var key in Breaks) {
var breakName = Breaks[key];
var breakValue = source.breaks[breakName];
if (breakValue === true) {
source.breaks[breakName] = source.breakWith;
} else if (breakValue === false) {
source.breaks[breakName] = '';
} else {
source.breaks[breakName] = source.breakWith.repeat(parseInt(breakValue));
}
}
return source;
}
module.exports = {
Breaks: Breaks,
Spaces: Spaces,
formatFrom: formatFrom
};