mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-26 08:47:57 +00:00
Piotr Mikołajczyk
9e5b211828
* Add argument * Apply * More verbose parsing * fmt * fmt again * Invalid state version * reuse parsing * type mismatch
54 lines
1.6 KiB
Rust
54 lines
1.6 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) 2021-2022 Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: Apache-2.0
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//! Utils for parsing user input
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use sp_version::StateVersion;
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pub(crate) fn hash(block_hash: &str) -> Result<String, String> {
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let (block_hash, offset) = if let Some(block_hash) = block_hash.strip_prefix("0x") {
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(block_hash, 2)
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} else {
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(block_hash, 0)
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};
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if let Some(pos) = block_hash.chars().position(|c| !c.is_ascii_hexdigit()) {
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Err(format!(
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"Expected block hash, found illegal hex character at position: {}",
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offset + pos,
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))
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} else {
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Ok(block_hash.into())
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}
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}
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pub(crate) fn url(s: &str) -> Result<String, &'static str> {
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if s.starts_with("ws://") || s.starts_with("wss://") {
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// could use Url crate as well, but lets keep it simple for now.
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Ok(s.to_string())
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} else {
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Err("not a valid WS(S) url: must start with 'ws://' or 'wss://'")
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}
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}
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pub(crate) fn state_version(s: &str) -> Result<StateVersion, &'static str> {
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s.parse::<u8>()
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.map_err(|_| ())
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.and_then(StateVersion::try_from)
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.map_err(|_| "Invalid state version.")
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}
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