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const trimStart = (str) => {
// NOTE String.trimStart is available on Firefox 61
return str.replace(/^\s+/, '');
};
const normalizeUrl = (keywords, searchSettings) => {
try {
return new URL(keywords).href;
} catch (e) {
if (keywords.includes('.') && !keywords.includes(' ')) {
return 'http://' + keywords;
}
let template = searchSettings.engines[searchSettings.default];
let query = keywords;
let first = trimStart(keywords).split(' ')[0];
if (Object.keys(searchSettings.engines).includes(first)) {
template = searchSettings.engines[first];
query = trimStart(trimStart(keywords).slice(first.length));
}
return template.replace('{}', encodeURIComponent(query));
}
};
const mustNumber = (v) => {
let num = Number(v);
if (isNaN(num)) {
throw new Error('Not number: ' + v);
}
return num;
};
const parseSetOption = (word, types) => {
let [key, value] = word.split('=');
if (value === undefined) {
value = !key.startsWith('no');
key = value ? key : key.slice(2);
}
let type = types[key];
if (!type) {
throw new Error('Unknown property: ' + key);
}
if (type === 'boolean' && typeof value !== 'boolean' ||
type !== 'boolean' && typeof value === 'boolean') {
throw new Error('Invalid argument: ' + word);
}
switch (type) {
case 'string': return [key, value];
case 'number': return [key, mustNumber(value)];
case 'boolean': return [key, value];
}
};
export { normalizeUrl, parseSetOption };
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