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

use flate2::write::GzEncoder;
use flate2::Compression;
use std::fs::File;
use std::io::prelude::*;
use std::io::{Seek, Write};
use std::iter::Iterator;
use std::path::{Path, PathBuf};
use std::{fs, io};
use walkdir::{DirEntry, WalkDir};
use zip::write::FileOptions;

#[derive(Debug, Clone, Eq, PartialEq)]
pub enum ArchiveMode {
    Tar,
    Zip,
    Skip,
}

impl ArchiveMode {
    /// Create either a tar or zip file of the provided source path
    pub fn make_archive(
        &self,
        src: impl AsRef<Path>,
        to: impl AsRef<Path>,
    ) -> anyhow::Result<Option<PathBuf>> {
        match self {
            ArchiveMode::Tar => {
                let to = PathBuf::from(format!("{}.tar.gz", to.as_ref().display()));
                let file = File::create(&to)?;
                make_tarball(src, file)?;
                Ok(Some(to))
            }
            ArchiveMode::Zip => {
                let src = src.as_ref();
                let to = PathBuf::from(format!("{}.zip", to.as_ref().display()));
                let file = File::create(&to)?;
                let walkdir = WalkDir::new(src);
                let it = walkdir.into_iter();

                zip_dir(&mut it.filter_map(|e| e.ok()), src, file)?;
                Ok(Some(to))
            }
            ArchiveMode::Skip => Ok(None),
        }
    }
}

impl Default for ArchiveMode {
    fn default() -> Self {
        ArchiveMode::Skip
    }
}

/// unzip file into location of `to`
pub fn unzip(file: impl AsRef<Path>, to: impl AsRef<Path>) -> anyhow::Result<()> {
    let file = file.as_ref();
    let to = to.as_ref();
    let file = fs::File::open(file)?;
    let mut archive = zip::ZipArchive::new(file)?;

    for i in 0..archive.len() {
        let mut file = archive.by_index(i)?;
        let outpath = to.join(&file.sanitized_name());

        if (&*file.name()).ends_with('/') {
            fs::create_dir_all(&outpath)?;
        } else {
            if let Some(p) = outpath.parent() {
                if !p.exists() {
                    fs::create_dir_all(&p)?;
                }
            }
            let mut outfile = fs::File::create(&outpath)?;
            io::copy(&mut file, &mut outfile)?;
        }

        // Get and Set permissions
        #[cfg(unix)]
        {
            use std::os::unix::fs::PermissionsExt;

            if let Some(mode) = file.unix_mode() {
                fs::set_permissions(&outpath, fs::Permissions::from_mode(mode))?;
            }
        }
    }

    Ok(())
}

fn zip_dir<T>(
    it: &mut impl Iterator<Item = DirEntry>,
    prefix: impl AsRef<Path>,
    writer: T,
) -> anyhow::Result<()>
where
    T: Write + Seek,
{
    let prefix = prefix.as_ref();
    let mut zip = zip::ZipWriter::new(writer);
    let options = FileOptions::default().unix_permissions(0o755);

    let mut buffer = Vec::new();
    for entry in it {
        let path = entry.path();
        let name = path.strip_prefix(prefix)?;

        // Write file or directory explicitly
        // Some unzip tools unzip files with directory paths correctly, some do not!
        if path.is_file() {
            zip.start_file_from_path(name, options)?;
            let mut f = File::open(path)?;

            f.read_to_end(&mut buffer)?;
            zip.write_all(&*buffer)?;
            buffer.clear();
        } else if !name.as_os_str().is_empty() {
            // Only if not root! Avoids path spec / warning
            // and mapname conversion failed error on unzip
            zip.add_directory_from_path(name, options)?;
        }
    }
    zip.finish()?;
    Ok(())
}

fn make_tarball<T: Write>(src: impl AsRef<Path>, writer: T) -> anyhow::Result<()> {
    let enc = GzEncoder::new(writer, Compression::default());
    let mut tar = tar::Builder::new(enc);
    tar.append_dir_all(".", src)?;
    Ok(())
}