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const libarchive = @import("libarchive");
const std = @import("std");
const xdg = @import("xdg");
const zup = @import("root");
const Allocator = std.mem.Allocator;
const ArchiveRead = libarchive.Read;
const ArenaAllocator = std.heap.ArenaAllocator;
const Config = zup.Config;
const EasyHttp = zup.EasyHttp;
const Installation = zup.Installation;
const Installations = zup.Installations;
pub const params =
\\-f, --force Install over existing installations
\\<NAME>
;
pub const description = "Installs a Zig version. Run `zup list -i` to see installed <NAME>s.";
pub const min_args = 1;
pub const max_args = 1;
pub fn main(comptime Result: type, config: Config, res: Result) !void {
const allocator = config.allocator;
var available = try Installation.getAvailableList(config);
defer Installation.deinitMap(allocator, &available);
return perform(allocator, res.positionals[0].?, res.args.force != 0, available);
}
pub fn perform(allocator: Allocator, name: []const u8, force: bool, available: Installations) !void {
if (!force and try Installation.isInstalled(allocator, name)) {
std.log.err("{s} already installed, not overwriting without --force!", .{name});
return error.AlreadyInstalled;
}
const installation = available.get(name) orelse {
std.log.err("Installation by name {s} not available!", .{name});
return error.InstallationNotFound;
};
if (installation.url == null) {
std.log.err("No tarball URL for {s} found!", .{name});
}
const installation_dir = blk: {
const data_home = try xdg.getDataHome(allocator, "zup");
defer allocator.free(data_home);
break :blk try std.fs.path.join(allocator, &.{ data_home, name });
};
defer allocator.free(installation_dir);
std.log.info("Installing {s}, version {f}", .{ name, installation.version });
std.log.info("Downloading from {s}...", .{installation.url_str.?});
const data = try EasyHttp.get(allocator, installation.url.?);
defer allocator.free(data);
std.log.info("Extracting...", .{});
var archive = try ArchiveRead.init();
defer archive.deinit();
try archive.supportFilter(.all);
try archive.supportFormat(.all);
try archive.openMemory(data);
while (try archive.nextHeader()) |entry_c| {
var entry = entry_c;
const source = entry.pathname();
const dest = try preparePathname(allocator, installation_dir, source);
defer allocator.free(dest);
entry.setPathname(dest);
try archive.extract(entry, 0);
}
std.log.info("Installed to {s}", .{installation_dir});
if (!try Installation.isActive(allocator, name)) {
std.log.info("If you want to use this installation, run `zup switch {s}`", .{name});
}
}
fn preparePathname(allocator: Allocator, installation_dir: []const u8, source: []const u8) ![:0]u8 {
const stripped = if (std.mem.indexOfScalar(u8, source, '/')) |idx|
source[idx + 1 ..]
else
"";
return std.fs.path.joinZ(allocator, &.{ installation_dir, stripped });
}
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