/Users/andrewlamb/Software/datafusion/datafusion/common/src/parsers.rs
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1 | | // Licensed to the Apache Software Foundation (ASF) under one |
2 | | // or more contributor license agreements. See the NOTICE file |
3 | | // distributed with this work for additional information |
4 | | // regarding copyright ownership. The ASF licenses this file |
5 | | // to you under the Apache License, Version 2.0 (the |
6 | | // "License"); you may not use this file except in compliance |
7 | | // with the License. You may obtain a copy of the License at |
8 | | // |
9 | | // http://www.apache.org/licenses/LICENSE-2.0 |
10 | | // |
11 | | // Unless required by applicable law or agreed to in writing, |
12 | | // software distributed under the License is distributed on an |
13 | | // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
14 | | // KIND, either express or implied. See the License for the |
15 | | // specific language governing permissions and limitations |
16 | | // under the License. |
17 | | |
18 | | //! Interval parsing logic |
19 | | |
20 | | use std::fmt::Display; |
21 | | use std::result; |
22 | | use std::str::FromStr; |
23 | | |
24 | | use sqlparser::parser::ParserError; |
25 | | |
26 | | /// Readable file compression type |
27 | | #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] |
28 | | pub enum CompressionTypeVariant { |
29 | | /// Gzip-ed file |
30 | | GZIP, |
31 | | /// Bzip2-ed file |
32 | | BZIP2, |
33 | | /// Xz-ed file (liblzma) |
34 | | XZ, |
35 | | /// Zstd-ed file, |
36 | | ZSTD, |
37 | | /// Uncompressed file |
38 | | UNCOMPRESSED, |
39 | | } |
40 | | |
41 | | impl FromStr for CompressionTypeVariant { |
42 | | type Err = ParserError; |
43 | | |
44 | 0 | fn from_str(s: &str) -> result::Result<Self, ParserError> { |
45 | 0 | let s = s.to_uppercase(); |
46 | 0 | match s.as_str() { |
47 | 0 | "GZIP" | "GZ" => Ok(Self::GZIP), |
48 | 0 | "BZIP2" | "BZ2" => Ok(Self::BZIP2), |
49 | 0 | "XZ" => Ok(Self::XZ), |
50 | 0 | "ZST" | "ZSTD" => Ok(Self::ZSTD), |
51 | 0 | "" | "UNCOMPRESSED" => Ok(Self::UNCOMPRESSED), |
52 | 0 | _ => Err(ParserError::ParserError(format!( |
53 | 0 | "Unsupported file compression type {s}" |
54 | 0 | ))), |
55 | | } |
56 | 0 | } |
57 | | } |
58 | | |
59 | | impl Display for CompressionTypeVariant { |
60 | 0 | fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { |
61 | 0 | let str = match self { |
62 | 0 | Self::GZIP => "GZIP", |
63 | 0 | Self::BZIP2 => "BZIP2", |
64 | 0 | Self::XZ => "XZ", |
65 | 0 | Self::ZSTD => "ZSTD", |
66 | 0 | Self::UNCOMPRESSED => "", |
67 | | }; |
68 | 0 | write!(f, "{}", str) |
69 | 0 | } |
70 | | } |
71 | | |
72 | | impl CompressionTypeVariant { |
73 | 0 | pub const fn is_compressed(&self) -> bool { |
74 | 0 | !matches!(self, &Self::UNCOMPRESSED) |
75 | 0 | } |
76 | | } |