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author | Dimitri Staessens <[email protected]> | 2019-10-06 21:37:45 +0200 |
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committer | Dimitri Staessens <[email protected]> | 2019-10-06 21:37:45 +0200 |
commit | 3c51c3be85bb0d1bdb87ea0d6632f1c256912f27 (patch) | |
tree | c7ccc8279b12c4f7bdbbb4270d617e48f51722e4 /node_modules/postcss-value-parser/lib/parse.js | |
parent | 412c104bebc507bea9c94fd53b5bdc4b64cbfe31 (diff) | |
download | website-3c51c3be85bb0d1bdb87ea0d6632f1c256912f27.tar.gz website-3c51c3be85bb0d1bdb87ea0d6632f1c256912f27.zip |
build: Add some required modules for node
Diffstat (limited to 'node_modules/postcss-value-parser/lib/parse.js')
-rw-r--r-- | node_modules/postcss-value-parser/lib/parse.js | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/node_modules/postcss-value-parser/lib/parse.js b/node_modules/postcss-value-parser/lib/parse.js new file mode 100644 index 0000000..502b5ba --- /dev/null +++ b/node_modules/postcss-value-parser/lib/parse.js @@ -0,0 +1,304 @@ +var openParentheses = "(".charCodeAt(0); +var closeParentheses = ")".charCodeAt(0); +var singleQuote = "'".charCodeAt(0); +var doubleQuote = '"'.charCodeAt(0); +var backslash = "\\".charCodeAt(0); +var slash = "/".charCodeAt(0); +var comma = ",".charCodeAt(0); +var colon = ":".charCodeAt(0); +var star = "*".charCodeAt(0); +var uLower = "u".charCodeAt(0); +var uUpper = "U".charCodeAt(0); +var plus = "+".charCodeAt(0); +var isUnicodeRange = /^[a-f0-9?-]+$/i; + +module.exports = function(input) { + var tokens = []; + var value = input; + + var next, + quote, + prev, + token, + escape, + escapePos, + whitespacePos, + parenthesesOpenPos; + var pos = 0; + var code = value.charCodeAt(pos); + var max = value.length; + var stack = [{ nodes: tokens }]; + var balanced = 0; + var parent; + + var name = ""; + var before = ""; + var after = ""; + + while (pos < max) { + // Whitespaces + if (code <= 32) { + next = pos; + do { + next += 1; + code = value.charCodeAt(next); + } while (code <= 32); + token = value.slice(pos, next); + + prev = tokens[tokens.length - 1]; + if (code === closeParentheses && balanced) { + after = token; + } else if (prev && prev.type === "div") { + prev.after = token; + } else if ( + code === comma || + code === colon || + (code === slash && + value.charCodeAt(next + 1) !== star && + (!parent || + (parent && parent.type === "function" && parent.value !== "calc"))) + ) { + before = token; + } else { + tokens.push({ + type: "space", + sourceIndex: pos, + value: token + }); + } + + pos = next; + + // Quotes + } else if (code === singleQuote || code === doubleQuote) { + next = pos; + quote = code === singleQuote ? "'" : '"'; + token = { + type: "string", + sourceIndex: pos, + quote: quote + }; + do { + escape = false; + next = value.indexOf(quote, next + 1); + if (~next) { + escapePos = next; + while (value.charCodeAt(escapePos - 1) === backslash) { + escapePos -= 1; + escape = !escape; + } + } else { + value += quote; + next = value.length - 1; + token.unclosed = true; + } + } while (escape); + token.value = value.slice(pos + 1, next); + + tokens.push(token); + pos = next + 1; + code = value.charCodeAt(pos); + + // Comments + } else if (code === slash && value.charCodeAt(pos + 1) === star) { + token = { + type: "comment", + sourceIndex: pos + }; + + next = value.indexOf("*/", pos); + if (next === -1) { + token.unclosed = true; + next = value.length; + } + + token.value = value.slice(pos + 2, next); + tokens.push(token); + + pos = next + 2; + code = value.charCodeAt(pos); + + // Operation within calc + } else if ( + (code === slash || code === star) && + parent && + parent.type === "function" && + parent.value === "calc" + ) { + token = value[pos]; + tokens.push({ + type: "word", + sourceIndex: pos - before.length, + value: token + }); + pos += 1; + code = value.charCodeAt(pos); + + // Dividers + } else if (code === slash || code === comma || code === colon) { + token = value[pos]; + + tokens.push({ + type: "div", + sourceIndex: pos - before.length, + value: token, + before: before, + after: "" + }); + before = ""; + + pos += 1; + code = value.charCodeAt(pos); + + // Open parentheses + } else if (openParentheses === code) { + // Whitespaces after open parentheses + next = pos; + do { + next += 1; + code = value.charCodeAt(next); + } while (code <= 32); + parenthesesOpenPos = pos; + token = { + type: "function", + sourceIndex: pos - name.length, + value: name, + before: value.slice(parenthesesOpenPos + 1, next) + }; + pos = next; + + if (name === "url" && code !== singleQuote && code !== doubleQuote) { + next -= 1; + do { + escape = false; + next = value.indexOf(")", next + 1); + if (~next) { + escapePos = next; + while (value.charCodeAt(escapePos - 1) === backslash) { + escapePos -= 1; + escape = !escape; + } + } else { + value += ")"; + next = value.length - 1; + token.unclosed = true; + } + } while (escape); + // Whitespaces before closed + whitespacePos = next; + do { + whitespacePos -= 1; + code = value.charCodeAt(whitespacePos); + } while (code <= 32); + if (parenthesesOpenPos < whitespacePos) { + if (pos !== whitespacePos + 1) { + token.nodes = [ + { + type: "word", + sourceIndex: pos, + value: value.slice(pos, whitespacePos + 1) + } + ]; + } else { + token.nodes = []; + } + if (token.unclosed && whitespacePos + 1 !== next) { + token.after = ""; + token.nodes.push({ + type: "space", + sourceIndex: whitespacePos + 1, + value: value.slice(whitespacePos + 1, next) + }); + } else { + token.after = value.slice(whitespacePos + 1, next); + } + } else { + token.after = ""; + token.nodes = []; + } + pos = next + 1; + code = value.charCodeAt(pos); + tokens.push(token); + } else { + balanced += 1; + token.after = ""; + tokens.push(token); + stack.push(token); + tokens = token.nodes = []; + parent = token; + } + name = ""; + + // Close parentheses + } else if (closeParentheses === code && balanced) { + pos += 1; + code = value.charCodeAt(pos); + + parent.after = after; + after = ""; + balanced -= 1; + stack.pop(); + parent = stack[balanced]; + tokens = parent.nodes; + + // Words + } else { + next = pos; + do { + if (code === backslash) { + next += 1; + } + next += 1; + code = value.charCodeAt(next); + } while ( + next < max && + !( + code <= 32 || + code === singleQuote || + code === doubleQuote || + code === comma || + code === colon || + code === slash || + code === openParentheses || + (code === star && + parent && + parent.type === "function" && + parent.value === "calc") || + (code === slash && + parent.type === "function" && + parent.value === "calc") || + (code === closeParentheses && balanced) + ) + ); + token = value.slice(pos, next); + + if (openParentheses === code) { + name = token; + } else if ( + (uLower === token.charCodeAt(0) || uUpper === token.charCodeAt(0)) && + plus === token.charCodeAt(1) && + isUnicodeRange.test(token.slice(2)) + ) { + tokens.push({ + type: "unicode-range", + sourceIndex: pos, + value: token + }); + } else { + tokens.push({ + type: "word", + sourceIndex: pos, + value: token + }); + } + + pos = next; + } + } + + for (pos = stack.length - 1; pos; pos -= 1) { + stack[pos].unclosed = true; + } + + return stack[0].nodes; +}; |