RunasSudo/DrCr
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Allow single-letter commodity name to precede quantity

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This commit is contained in:
RunasSudo 2025-06-08 21:16:22 +10:00
parent a22c23eb26
commit b12fb30a20
Signed by: RunasSudo
GPG Key ID: 7234E476BF21C61A
1 changed files with 44 additions and 6 deletions
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50
src/db.ts
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@ -169,14 +169,54 @@ export function serialiseAmount(quantity: number, commodity: string): string {
return quantityString + ' ' + commodity;
}
function parseFloatStrict(quantity: string): number {
// Parses quantity as a float, throwing error on invalid input
if (!/^[0-9]+(\.[0-9]+)?$/.test(quantity)) {
throw new DeserialiseAmountError('Invalid quantity: ' + quantity);
}
return parseFloat(quantity);
}
export function deserialiseAmount(amount: string): { quantity: number, commodity: string } {
const factor = Math.pow(10, db.metadata.dps);
if (amount.length === 0) {
throw new DeserialiseAmountError('Amount cannot be blank');
}
if (amount.charAt(0) < '0' || amount.charAt(0) > '9') {
// Check for single letter commodity
if (amount.length === 1) {
throw new DeserialiseAmountError('Quantity cannot be blank (expected quantity after commodity symbol ' + amount + ')');
}
if (amount.charAt(1) < '0' || amount.charAt(1) > '9') {
throw new DeserialiseAmountError('Invalid quantity: ' + amount + ' (expected quantity after single-letter commodity symbol ' + amount.charAt(0) + ')');
}
let quantity, commodity;
if (amount.indexOf(' ') < 0) {
// No cost base
quantity = Math.round(parseFloatStrict(amount.substring(1)) * factor);
commodity = amount.charAt(0);
} else {
// Cost base specified
quantity = Math.round(parseFloatStrict(amount.substring(1, amount.indexOf(' '))) * factor);
commodity = amount.charAt(0) + amount.substring(amount.indexOf(' '));
}
if (!Number.isSafeInteger(quantity)) { throw new DeserialiseAmountError('Quantity not representable by safe integer: ' + amount); }
return {
'quantity': quantity,
'commodity': commodity
};
}
if (amount.indexOf(' ') < 0) {
// Default commodity
const quantity = Math.round(parseFloat(amount) * factor)
const quantity = Math.round(parseFloatStrict(amount) * factor);
if (Number.isNaN(quantity)) { throw new DeserialiseAmountError('Invalid quantity: ' + amount); }
if (!Number.isSafeInteger(quantity)) { throw new DeserialiseAmountError('Quantity not representable by safe integer: ' + amount); }
return {
@ -185,12 +225,10 @@ export function deserialiseAmount(amount: string): { quantity: number, commodity
};
}
// FIXME: Parse single letter commodities
// Must be multi-letter commodity
const quantityStr = amount.substring(0, amount.indexOf(' '));
const quantity = Math.round(parseFloat(quantityStr) * factor)
const quantity = Math.round(parseFloatStrict(quantityStr) * factor)
if (Number.isNaN(quantity)) { throw new DeserialiseAmountError('Invalid quantity: ' + amount); }
if (!Number.isSafeInteger(quantity)) { throw new DeserialiseAmountError('Quantity not representable by safe integer: ' + amount); }
const commodity = amount.substring(amount.indexOf(' ') + 1);