| 1 | import 'package:intl/intl.dart'; |
| 2 | |
| 3 | double cryptoAmountToDouble({required num amount, required num divider}) => amount / divider; |
| 4 | |
| 5 | extension MaxDecimals on String { |
| 6 | String withMaxDecimals(int maxDecimals) { |
| 7 | var parts = split("."); |
| 8 | |
| 9 | if (parts.length > 2) { |
| 10 | parts = [parts.first, parts.sublist(1, parts.length).join("")]; |
| 11 | } |
| 12 | |
| 13 | if (parts.length == 2 && parts[1].length > maxDecimals) { |
| 14 | parts[1] = parts[1].substring(0, maxDecimals); |
| 15 | } |
| 16 | |
| 17 | return parts.join("."); |
| 18 | } |
| 19 | |
| 20 | String withDecimals(int decimals) { |
| 21 | var parts = split("."); |
| 22 | |
| 23 | if (parts.length > 2) { |
| 24 | parts = [parts.first, parts.sublist(1).join("")]; |
| 25 | } |
| 26 | |
| 27 | if (parts.length == 1) { |
| 28 | parts.add(""); |
| 29 | } |
| 30 | |
| 31 | if (parts[1].length > decimals) { |
| 32 | parts[1] = parts[1].substring(0, decimals); |
| 33 | } else { |
| 34 | parts[1] = parts[1].padRight(decimals, '0'); |
| 35 | } |
| 36 | |
| 37 | return parts.join("."); |
| 38 | } |
| 39 | |
| 40 | /// Format a stringified number to a localized representation |
| 41 | /// 1.000.000,00 in de_DE |
| 42 | /// 1’000’000.00 in de_CH |
| 43 | /// 1,000,000.00 in en_US |
| 44 | /// |
| 45 | /// Can also handle amounts suffixed with a Symbol |
| 46 | /// 1.000.000,00 XMR in de_DE |
| 47 | /// 1’000’000.00 XMR in de_CH |
| 48 | /// 1,000,000.00 XMR in en_US |
| 49 | /// |
| 50 | /// Can also handle amounts prefixed with a size relational operator |
| 51 | /// < 1.000.000,00 XMR in de_DE |
| 52 | /// > 1’000’000.00 XMR in de_CH |
| 53 | /// < 1,000,000.00 XMR in en_US |
| 54 | /// |
| 55 | /// DO NOT PARSE THE LOCALIZED STRING TO A NUMBER IF YOU WANT TO KEEP YOUR SANITY! |
| 56 | String withLocalSeperator([String? locale]) { |
| 57 | if (contains(" ")) { |
| 58 | final parts = split(" "); |
| 59 | |
| 60 | if ([">", "<"].contains(parts.first)) { |
| 61 | final result = [parts.first, parts[1].withLocalSeperator(locale)]; |
| 62 | if (parts.length > 2) result.addAll(parts.sublist(2)); |
| 63 | |
| 64 | return result.join(" "); |
| 65 | } |
| 66 | |
| 67 | return [parts.first.withLocalSeperator(locale), ...parts.sublist(1)].join(" "); |
| 68 | } |
| 69 | |
| 70 | final formater = NumberFormat("#,###", locale); |
| 71 | final parts = replaceAll(",", "").split("."); |
| 72 | if (parts.first.contains("< 0")) parts.first = "0"; |
| 73 | |
| 74 | return [formater.format(int.tryParse(parts.first) ?? 0), ...parts.sublist(1)] |
| 75 | .join(formater.symbols.DECIMAL_SEP); |
| 76 | } |
| 77 | } |