gistit 0.2.3

Quick and easy code snippet sharing
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135

use lazy_static::lazy_static;
use ngrammatic::{Corpus, CorpusBuilder, Pad};

pub const SUPPORTED_COLORSCHEMES: [&str; 24] = [
    "1337",
    "Coldark-Cold",
    "Coldark-Dark",
    "DarkNeon",
    "Dracula",
    "GitHub",
    "Monokai Extended",
    "Monokai Extended Bright",
    "Monokai Extended Light",
    "Monokai Extended Origin",
    "Nord",
    "OneHalfDark",
    "OneHalfLight",
    "Solarized (dark)",
    "Solarized (light)",
    "Sublime Snazzy",
    "TwoDark",
    "Visual Studio Dark+",
    "ansi",
    "base16",
    "base16-256",
    "gruvbox-dark",
    "gruvbox-light",
    "zenburn",
];

lazy_static! {
    static ref FUZZY_MATCH: Corpus = SUPPORTED_COLORSCHEMES.iter().fold(
        CorpusBuilder::new().arity(2).pad_full(Pad::Auto).finish(),
        |mut corpus, &t| {
            corpus.add_text(t);
            corpus
        },
    );
}

pub mod check {
    use super::{FUZZY_MATCH, SUPPORTED_COLORSCHEMES};

    use std::ffi::OsStr;
    use std::fs;
    use std::net::Ipv4Addr;
    use std::ops::RangeInclusive;

    use crate::file::EXTENSION_TO_LANG_MAPPING;
    use crate::{Error, Result};

    const ALLOWED_FILE_SIZE_RANGE: RangeInclusive<u64> = 20..=50_000;

    const ALLOWED_DESCRIPTION_CHAR_LENGHT_RANGE: RangeInclusive<usize> = 10..=100;

    const ALLOWED_AUTHOR_CHAR_LENGTH_RANGE: RangeInclusive<usize> = 3..=30;

    const GISTIT_HASH_CHAR_LENGTH: usize = 64;

    pub fn description(description: &str) -> Result<&str> {
        if ALLOWED_DESCRIPTION_CHAR_LENGHT_RANGE.contains(&description.len()) {
            Ok(description)
        } else {
            Err(Error::Argument(
                "invalid description character length.",
                "--description",
            ))
        }
    }

    pub fn author(author: &str) -> Result<&str> {
        if ALLOWED_AUTHOR_CHAR_LENGTH_RANGE.contains(&author.len()) {
            Ok(author)
        } else {
            Err(Error::Argument(
                "invalid author character length.",
                "--author",
            ))
        }
    }

    pub fn metadata(attr: &fs::Metadata) -> Result<()> {
        let size_allowed = ALLOWED_FILE_SIZE_RANGE.contains(&attr.len());

        if size_allowed {
            Ok(())
        } else {
            Err(Error::Argument("file size not allowed", "[FILE]"))
        }
    }

    pub fn extension(ext: Option<&OsStr>) -> Result<()> {
        let ext = ext
            .and_then(OsStr::to_str)
            .ok_or(Error::Argument("file doesn't have an extension", "[FILE]"))?;

        if EXTENSION_TO_LANG_MAPPING.contains_key(ext) {
            Ok(())
        } else {
            Err(Error::Argument("file extension not supported", "[FILE]"))
        }
    }

    pub fn colorscheme(colorscheme: &str) -> Result<&str> {
        if SUPPORTED_COLORSCHEMES.contains(&colorscheme) {
            Ok(colorscheme)
        } else {
            let fuzzy_matches = FUZZY_MATCH.search(colorscheme, 0.25);
            let maybe_match = fuzzy_matches.first();

            maybe_match.map_or_else(
                || Err(Error::Argument("invalid colorscheme", "--colorscheme")),
                |top_match| Err(Error::Colorscheme(top_match.text.clone())),
            )
        }
    }

    pub const fn hash(hash: &str) -> Result<&str> {
        if hash.len() == GISTIT_HASH_CHAR_LENGTH {
            Ok(hash)
        } else {
            Err(Error::Argument("invalid gistit hash format.", "--hash"))
        }
    }

    pub fn host_port<'a, 'b>(host: &'a str, port: &'b str) -> Result<(&'a str, &'b str)> {
        let _host: Ipv4Addr = host
            .parse()
            .map_err(|_| Error::Argument("invalid host", "--host"))?;
        let _port: u16 = port
            .parse()
            .map_err(|_| Error::Argument("invalid port", "--port"))?;
        Ok((host, port))
    }
}