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Remove mutation from sanitizeIRI.

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Caleb
2017-10-03 20:21:56 -06:00
parent fdc4054fbd
commit 793afc8b73
1 changed files with 6 additions and 23 deletions
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29
src/lib/urlHelper.js
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@ -23,35 +23,18 @@ export function getNewEntryUrl(collectionName, direct) {
*/ */
const uriChars = /[\w\-.~]/i; const uriChars = /[\w\-.~]/i;
const ucsChars = /[\xA0-\u{D7FF}\u{F900}-\u{FDCF}\u{FDF0}-\u{FFEF}\u{10000}-\u{1FFFD}\u{20000}-\u{2FFFD}\u{30000}-\u{3FFFD}\u{40000}-\u{4FFFD}\u{50000}-\u{5FFFD}\u{60000}-\u{6FFFD}\u{70000}-\u{7FFFD}\u{80000}-\u{8FFFD}\u{90000}-\u{9FFFD}\u{A0000}-\u{AFFFD}\u{B0000}-\u{BFFFD}\u{C0000}-\u{CFFFD}\u{D0000}-\u{DFFFD}\u{E1000}-\u{EFFFD}]/u; const ucsChars = /[\xA0-\u{D7FF}\u{F900}-\u{FDCF}\u{FDF0}-\u{FFEF}\u{10000}-\u{1FFFD}\u{20000}-\u{2FFFD}\u{30000}-\u{3FFFD}\u{40000}-\u{4FFFD}\u{50000}-\u{5FFFD}\u{60000}-\u{6FFFD}\u{70000}-\u{7FFFD}\u{80000}-\u{8FFFD}\u{90000}-\u{9FFFD}\u{A0000}-\u{AFFFD}\u{B0000}-\u{BFFFD}\u{C0000}-\u{CFFFD}\u{D0000}-\u{DFFFD}\u{E1000}-\u{EFFFD}]/u;
const validIRIChar = (char) => (uriChars.test(char) || ucsChars.test(char));
// `sanitizeIRI` does not actually URI-encode the chars (that is the browser's and server's job), just removes the ones that are not allowed. // `sanitizeIRI` does not actually URI-encode the chars (that is the browser's and server's job), just removes the ones that are not allowed.
function sanitizeIRI(str, { replacement = "" } = {}) { export function sanitizeIRI(str, { replacement = "" } = {}) {
if (!isString(str)) throw "The input slug must be a string."; if (!isString(str)) throw "The input slug must be a string.";
if (!isString(replacement)) throw "`options.replacement` must be a string."; if (!isString(replacement)) throw "`options.replacement` must be a string.";
// This is where sanitization is actually done.
const sanitize = (input) => {
let result = "";
// We cannot use a `map` function here because `string.split()`
// splits things like emojis into UTF-16 surrogate pairs,
// and we want to use UTF-8 (it isn't required, but is nicer).
for (const char of input) {
if (uriChars.test(char) || ucsChars.test(char)) {
result += char;
} else {
result += replacement;
}
}
return result;
}
// Check and make sure the replacement character is actually a safe char itself. // Check and make sure the replacement character is actually a safe char itself.
if (replacement !== "") { if (!Array.from(replacement).every(validIRIChar)) throw "The replacement character(s) (options.replacement) is itself unsafe.";
const validReplacement = (sanitize(replacement) === replacement);
if (!validReplacement) throw "The replacement character(s) (options.replacement) is itself unsafe.";
}
// Actually do the sanitization. // `Array.from` must be used instead of `String.split` because
return sanitize(str); // `split` converts things like emojis into UTF-16 surrogate pairs.
return Array.from(str).map(char => (validIRIChar(char) ? char : replacement)).join('');
} }
export function sanitizeSlug(str, { replacement = '-' } = {}) { export function sanitizeSlug(str, { replacement = '-' } = {}) {