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Diffstat (limited to 'lib/wallet/helpers.ts')
-rw-r--r-- | lib/wallet/helpers.ts | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/lib/wallet/helpers.ts b/lib/wallet/helpers.ts new file mode 100644 index 000000000..99913e558 --- /dev/null +++ b/lib/wallet/helpers.ts @@ -0,0 +1,65 @@ +/* + This file is part of TALER + (C) 2016 GNUnet e.V. + + TALER is free software; you can redistribute it and/or modify it under the + terms of the GNU General Public License as published by the Free Software + Foundation; either version 3, or (at your option) any later version. + + TALER is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + A PARTICULAR PURPOSE. See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along with + TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/> + */ + + +/** + * Smaller helper functions that do not depend + * on the emscripten machinery. + */ + +import {AmountJson} from "./types"; + +export function substituteFulfillmentUrl(url: string, vars) { + url = url.replace("${H_contract}", vars.H_contract); + url = url.replace("${$}", "$"); + return url; +} + + +export function amountToPretty(amount: AmountJson): string { + let x = amount.value + amount.fraction / 1e6; + return `${x} ${amount.currency}`; +} + + +/** + * Canonicalize a base url, typically for the mint. + * + * See http://api.taler.net/wallet.html#general + */ +export function canonicalizeBaseUrl(url) { + let x = new URI(url); + if (!x.protocol()) { + x.protocol("https"); + } + x.path(x.path() + "/").normalizePath(); + x.fragment(); + x.query(); + return x.href() +} + + +export function parsePrettyAmount(pretty: string): AmountJson { + const res = /([0-9]+)(.[0-9]+)?\s*(\w+)/.exec(pretty); + if (!res) { + return null; + } + return { + value: parseInt(res[1], 10), + fraction: res[2] ? (parseFloat(`0.${res[2]}`) * 1e-6) : 0, + currency: res[3] + } +}
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