Started simple package builder

astronaut

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+#!/bin/sh
+
+set -e
+
+# Paths
+dir_build="$PWD/build"
+dir_source="$PWD/source"
+dir_install="$PWD/install"
+
+show_help() {
+echo "This astronaut will help you build some satellites.
+Just describe what he's got to do in a satellite file.
+Usage: $0 [-s <dir>] [-b <dir>] [-i <dir>] <satellite>
+
+-s  Set source directory
+-b  Set build directory
+-i  Set install directory"
+}
+
+# Gather info
+while getopts "h?s:b:i:" opt; do
+    case "$opt" in
+        h|\?)
+            show_help
+            exit 0
+            ;;
+        s)
+            dir_source=$(realpath "$OPTARG")
+            ;;
+        b)
+            dir_build=$(realpath "$OPTARG")
+            ;;
+        i)
+            dir_install=$(realpath "$OPTARG")
+            ;;
+    esac
+done
+
+shift $((OPTIND-1))
+[ "$1" = "--" ] && shift
+
+if [ ! "$1" ]; then
+    show_help
+    exit 1
+fi
+
+satellite=$(realpath "$1")
+
+# Tools for the astronaut
+msg() {
+    echo "=> $@"
+}
+
+download() {
+    local name=$(basename "$1")
+    local path="$dir_source/$name"
+    if [ ! -f "$path" ]; then
+        msg "Downloading $name"
+        if [ "$2" ]; then
+            local cmd="$(echo "$2" | sed -e 's@{dst}@'"$path"'@g' -e 's@{source}@'"$1"'@g')"
+            $cmd
+        else
+            curl -#L -o "$path" "$1"
+        fi
+    fi
+}
+
+extract() {
+    msg "Extracting $1"
+    if [ "$2" ]; then
+        local cmd="$(echo "$2" | sed -e 's@{src}@'"$dir_source/$1"'@g')"
+        $cmd
+    else
+        tar xf "$dir_source/$1"
+    fi
+}
+
+dlextract() {
+    download "$1"
+    extract "$(basename ""$1"")"
+}
+
+extrafile() {
+    cp "$(dirname ""$satellite"")/$1" "$dir_build/$1"
+}
+
+# Create the satellite
+mkdir -p "$dir_source"
+mkdir -p "$dir_build"
+mkdir -p "$dir_install"
+
+cd "$dir_build"
+. "$satellite"

hello.sat

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+# Example of a satellite file, which is just a shell script with a cool name.
+
+name=hello
+version=2.9
+
+dlextract "http://ftp.gnu.org/pub/gnu/$name/$name-$version.tar.gz"
+
+cd "$name-$version"
+./configure
+make
+make DESTDIR="$dir_install" install