add xz

diff --git a/xz/README.md b/xz/README.md
new file mode 100644 (file)
index 0000000..ccefcc7
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+++ b/xz/README.md
@@ -0,0 +1,53 @@
+---
+title: XZ Utils
+homepage: https://tukaani.org/xz/
+tagline: |
+  XZ Utils is free general-purpose data compression software with a high compression ratio.
+---
+
+### Updating `xz`
+
+`webi xz@stable`
+
+The Windows builds are the official builds. The Mac and Linux builds are from
+[github.com/therootcompany/xz-static](https://github.com/therootcompany/xz-static).
+
+## Cheat Sheet
+
+`xz` and `unxz` are modern alternatives to `gzip` (and `gunzip`). They use LZMA2
+(de)compression (like 7z), and is supported across many platforms, and by `tar`.
+
+Here's the shortlist of options we've found most useful:
+
+```txt
+-z, --compress      force compression
+-d, --decompress    force decompression
+-l, --list          list information about .xz files
+
+-k, --keep          keep (don't delete) input files
+-c, --stdout        write to standard output and don't delete input files
+
+-0 ... -9           (de)compression can take up to 4gb RAM at 7-9 (default 6)
+-e, --extreme       try to improve compression ratio by using more CPU time
+-T, --threads=N     use up to N threads; set to 0 to match CPU cores (default 1)
+```
+
+### How to "Unzip"
+
+```bash
+unxz -k example.xz
+```
+
+```bash
+tar xvf example.tar.xz
+```
+
+### How to "Zip"
+
+```bash
+xz -k ./example
+```
+
+```bash
+tar cvf example.tar.xz ./example
+```

diff --git a/xz/install.ps1 b/xz/install.ps1
new file mode 100644 (file)
index 0000000..8d893e3
--- /dev/null
+++ b/xz/install.ps1
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+#!/usr/bin/env pwsh
+
+##############
+# Install xz #
+##############
+
+# Every package should define these variables
+$pkg_cmd_name = "xz"
+
+$pkg_dst_cmd = "$Env:USERPROFILE\.local\bin\xz.exe"
+$pkg_dst = "$pkg_dst_cmd"
+
+$pkg_src_cmd = "$Env:USERPROFILE\.local\opt\xz-v$Env:WEBI_VERSION\bin\xz.exe"
+$pkg_src_bin = "$Env:USERPROFILE\.local\opt\xz-v$Env:WEBI_VERSION\bin"
+$pkg_src_dir = "$Env:USERPROFILE\.local\opt\xz-v$Env:WEBI_VERSION"
+$pkg_src = "$pkg_src_cmd"
+
+$pkg_download = "$Env:USERPROFILE\Downloads\$Env:WEBI_PKG_FILE"
+
+# Fetch archive
+IF (!(Test-Path -Path "$Env:USERPROFILE\Downloads\$Env:WEBI_PKG_FILE"))
+{
+    # TODO: arch detection
+    echo "Downloading xz from $Env:WEBI_PKG_URL to $pkg_download"
+    & curl.exe -A "$Env:WEBI_UA" -fsSL "$Env:WEBI_PKG_URL" -o "$pkg_download.part"
+    & move "$pkg_download.part" "$pkg_download"
+}
+
+IF (!(Test-Path -Path "$pkg_src_cmd"))
+{
+    echo "Installing xz"
+
+    # TODO: create package-specific temp directory
+    # Enter tmp
+    pushd .local\tmp
+
+        echo "Unpacking $pkg_download"
+        & tar xf "$pkg_download"
+
+        # Settle unpacked archive into place
+        echo "Install Location: $pkg_src_cmd"
+        New-Item "$pkg_src_bin" -ItemType Directory -Force
+        Move-Item -Path ".\bin_x86-64\xz.exe" -Destination "$pkg_src_bin"
+        Move-Item -Path ".\bin_x86-64\xzdec.exe" -Destination "$pkg_src_bin"
+        Copy-Item -Path "$pkg_src_bin\xzdec.exe" -Destination "$pkg_src_bin\unxz.exe"
+        Move-Item -Path ".\bin_x86-64\lzmadec.exe" -Destination "$pkg_src_bin"
+        Copy-Item -Path "$pkg_src_bin\lzmadec.exe" -Destination "$pkg_src_bin\unlzma.exe"
+
+    # Exit tmp
+    popd
+}
+
+echo "Copying into '$pkg_dst_cmd' from '$pkg_src_cmd'"
+Remove-Item -Path "$pkg_dst_cmd" -Recurse -ErrorAction Ignore
+Copy-Item -Path "$pkg_src" -Destination "$pkg_dst" -Recurse

diff --git a/xz/install.sh b/xz/install.sh
new file mode 100644 (file)
index 0000000..54beb4c
--- /dev/null
+++ b/xz/install.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+
+{
+    set -e
+    set -u
+
+    ##############
+    # Install xz #
+    ##############
+
+    # Every package should define these 6 variables
+    pkg_cmd_name="xz"
+
+    pkg_dst_cmd="$HOME/.local/bin/xz"
+    pkg_dst="$pkg_dst_cmd"
+
+    pkg_src_cmd="$HOME/.local/opt/xz-v$WEBI_VERSION/bin/xz"
+    pkg_src_dir="$HOME/.local/opt/xz-v$WEBI_VERSION"
+    pkg_src="$pkg_src_cmd"
+
+    # pkg_install must be defined by every package
+    pkg_install() {
+        # ~/.local/opt/xz-v5.2.5/bin
+        mkdir -p "$(dirname $pkg_src_cmd)"
+
+        # mv ./xz-*/{xz,xzdec} ~/.local/opt/xz-v5.2.5/bin/
+        mv ./xz-*/xz* "$(dirname $pkg_src_cmd)"
+        ln -s xz "$(dirname $pkg_src_cmd)/unxz"
+    }
+
+    pkg_post_install() {
+        # supplements webi_link
+        ln -s xz "$(dirname $pkg_dst_cmd)/unxz"
+
+        webi_post_install
+    }
+
+    # pkg_get_current_version is recommended, but (soon) not required
+    pkg_get_current_version() {
+        # 'xz --version' has output in this format:
+        #       xz (XZ Utils) 5.2.5
+        #       liblzma 5.2.5
+        # This trims it down to just the version number:
+        #       5.2.5
+        echo $(xz --version 2>/dev/null | head -n 1 | cut -d ' ' -f 4)
+    }
+}

diff --git a/xz/releases.js b/xz/releases.js
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index 0000000..75717a0
--- /dev/null
+++ b/xz/releases.js
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+'use strict';
+
+var github = require('../_common/github.js');
+var owner = 'therootcompany';
+var repo = 'xz-static';
+
+module.exports = function (request) {
+  return github(request, owner, repo).then(function (all) {
+    all.releases.forEach(function (rel) {
+      if (/windows/.test(rel.download)) {
+        if (!/(86|64)/.test(rel.arch)) {
+          rel.arch = 'amd64';
+        }
+      }
+    });
+    return all;
+  });
+};
+
+if (module === require.main) {
+  module.exports(require('@root/request')).then(function (all) {
+    all = require('../_webi/normalize.js')(all);
+    // just select the first 5 for demonstration
+    all.releases = all.releases.slice(0, 5);
+    console.info(JSON.stringify(all, null, 2));
+  });
+}