+++ /dev/null
-"use strict";
-
-const _ = require("lodash");
-const beforeBlockString = require("../../utils/beforeBlockString");
-const blurComments = require("../../utils/blurComments");
-const hasBlock = require("../../utils/hasBlock");
-const isCustomProperty = require("../../utils/isCustomProperty");
-const keywordSets = require("../../reference/keywordSets");
-const optionsMatches = require("../../utils/optionsMatches");
-const report = require("../../utils/report");
-const ruleMessages = require("../../utils/ruleMessages");
-const styleSearch = require("style-search");
-const validateOptions = require("../../utils/validateOptions");
-const valueParser = require("postcss-value-parser");
-
-const ruleName = "length-zero-no-unit";
-
-const messages = ruleMessages(ruleName, {
- rejected: "Unexpected unit"
-});
-
-const rule = function(actual, secondary, context) {
- return (root, result) => {
- const validOptions = validateOptions(result, ruleName, { actual });
- if (!validOptions) {
- return;
- }
-
- root.walkDecls(decl => {
- check(blurComments(decl.toString()), decl);
- });
-
- root.walkAtRules(atRule => {
- const source = hasBlock(atRule)
- ? beforeBlockString(atRule, { noRawBefore: true })
- : atRule.toString();
- check(source, atRule);
- });
-
- function check(value, node) {
- const ignorableIndexes = new Set();
- const fixPositions = [];
-
- if (
- optionsMatches(secondary, "ignore", "custom-properties") &&
- isCustomProperty(value)
- ) {
- return;
- }
-
- styleSearch({ source: value, target: "0" }, match => {
- const index = match.startIndex;
-
- // Given a 0 somewhere in the full property value (not in a string, thanks
- // to styleSearch) we need to isolate the value that contains the zero.
- // To do so, we'll find the last index before the 0 of a character that would
- // divide one value in a list from another, and the next index of such a
- // character; then we build a substring from those indexes, which we can
- // assess.
-
- // If a single value includes multiple 0's (e.g. 100.01px), we don't want
- // each 0 to be treated as a separate value, possibly resulting in multiple
- // warnings for the same value (e.g. 0.00px).
- //
- // This check prevents that from happening: we build and check against a
- // Set containing all the indexes that are part of a value already validated.
- if (ignorableIndexes.has(index)) {
- return;
- }
-
- const prevValueBreakIndex = _.findLastIndex(
- value.substr(0, index),
- char => {
- return (
- [" ", ",", ")", "(", "#", ":", "\n", "\t"].indexOf(char) !== -1
- );
- }
- );
-
- // Ignore hex colors
- if (value[prevValueBreakIndex] === "#") {
- return;
- }
-
- // If no prev break was found, this value starts at 0
- const valueWithZeroStart =
- prevValueBreakIndex === -1 ? 0 : prevValueBreakIndex + 1;
-
- const nextValueBreakIndex = _.findIndex(
- value.substr(valueWithZeroStart),
- char => {
- return [" ", ",", ")"].indexOf(char) !== -1;
- }
- );
-
- // If no next break was found, this value ends at the end of the string
- const valueWithZeroEnd =
- nextValueBreakIndex === -1
- ? value.length
- : nextValueBreakIndex + valueWithZeroStart;
-
- const valueWithZero = value.slice(valueWithZeroStart, valueWithZeroEnd);
- const parsedValue = valueParser.unit(valueWithZero);
-
- if (!parsedValue || (parsedValue && !parsedValue.unit)) {
- return;
- }
-
- // Add the indexes to ignorableIndexes so the same value will not
- // be checked multiple times.
- _.range(valueWithZeroStart, valueWithZeroEnd).forEach(i =>
- ignorableIndexes.add(i)
- );
-
- // Only pay attention if the value parses to 0
- // and units with lengths
- if (
- parseFloat(valueWithZero, 10) !== 0 ||
- !keywordSets.lengthUnits.has(parsedValue.unit.toLowerCase())
- ) {
- return;
- }
-
- if (context.fix) {
- fixPositions.unshift({
- startIndex: valueWithZeroStart,
- length: valueWithZeroEnd - valueWithZeroStart
- });
- return;
- }
-
- report({
- message: messages.rejected,
- node,
- index: valueWithZeroEnd - parsedValue.unit.length,
- result,
- ruleName
- });
- });
-
- if (fixPositions.length) {
- fixPositions.forEach(function(fixPosition) {
- let startIndex = fixPosition.startIndex;
- // all nodes can have this
- startIndex -= node.raws.between.length;
-
- if (node.type === "atrule") {
- // atrules have a name and raws.afterName
- startIndex -= node.name.length;
- startIndex -= node.raws.afterName.length;
-
- node.params = replaceZero(
- node.params,
- startIndex,
- fixPosition.length
- );
- } else {
- // other nodes have prop
- startIndex -= node.prop.length;
- node.value = replaceZero(
- node.value,
- startIndex,
- fixPosition.length
- );
- }
- });
- }
- }
- };
-};
-
-function replaceZero(input, startIndex, length) {
- const stringStart = input.slice(0, startIndex);
- const stringEnd = input.slice(startIndex + length);
- return stringStart + "0" + stringEnd;
-}
-
-rule.ruleName = ruleName;
-rule.messages = messages;
-module.exports = rule;
projects / dotfiles / .git / blobdiff