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feat: support sub cmds #57

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Jul 31, 2024
Merged

feat: support sub cmds #57

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41 changes: 27 additions & 14 deletions src/command.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ const install = @import("install.zig");
const alias = @import("alias.zig");
const tools = @import("tools.zig");

// command species
// Command types
pub const Command = enum {
List,
Install,
Expand All @@ -20,16 +20,18 @@ pub const Command = enum {

const CommandData = struct {
cmd: Command = .Unknown,
subcmd: ?[]const u8 = null,
param: ?[]const u8 = null,
};

const CommandOption = struct {
short_handle: ?[]const u8,
handle: []const u8,
cmd: Command,
subcmd: ?[]const u8 = null,
};

/// now all available commands
// Available commands
const command_opts = [_]CommandOption{
.{ .short_handle = "ls", .handle = "list", .cmd = Command.List },
.{ .short_handle = "i", .handle = "install", .cmd = Command.Install },
Expand All @@ -39,39 +41,37 @@ const command_opts = [_]CommandOption{
.{ .short_handle = null, .handle = "--default", .cmd = Command.Default },
};

/// parse command and handle commands
/// Parse and handle commands
pub fn handle_command(params: []const []const u8) !void {
if (builtin.os.tag != .windows) {
if (std.mem.eql(u8, std.fs.path.basename(params[0]), "zig"))
try handle_alias(params);
}

// get command data, get the first command and its arg
const command: CommandData = blk: {
// when args len is less than 2, that mean no extra args!
if (params.len < 2) break :blk CommandData{};

const args = params[1..];

for (args, 0..) |arg, index| {
for (command_opts) |opt| {

// whether eql short handle
const is_eql_short_handle =
if (opt.short_handle) |short_handle|
const is_eql_short_handle = if (opt.short_handle) |short_handle|
std.mem.eql(u8, arg, short_handle)
else
false;

// whether eql handle
const is_eql_handle = std.mem.eql(u8, arg, opt.handle);

if (!is_eql_short_handle and !is_eql_handle)
continue;

const next_param = if (index + 1 < args.len) args[index + 1] else null;
const is_version = if (next_param) |np| std.ascii.isDigit(np[0]) else false;

break :blk CommandData{
.cmd = opt.cmd,
.param = if (index + 1 < args.len) args[index + 1] else null,
.param = if (is_version) next_param else null,
.subcmd = if (!is_version) next_param else null,
};
}
}
Expand All @@ -80,7 +80,7 @@ pub fn handle_command(params: []const []const u8) !void {

switch (command.cmd) {
.List => try handle_list(),
.Install => try install_version(command.param),
.Install => try install_version(command.subcmd, command.param),
.Use => try use_version(command.param),
.Default => try set_default(),
.Version => try get_version(),
Expand Down Expand Up @@ -122,8 +122,21 @@ fn handle_list() !void {
}
}

fn install_version(params: ?[]const u8) !void {
if (params) |version| {
fn install_version(subcmd: ?[]const u8, param: ?[]const u8) !void {
if (subcmd) |scmd| {
if (std.mem.eql(u8, scmd, "zig")) {
if (param) |version| {
try install.from_version(version);
} else {
std.debug.print("Please specify a version to install using 'install zig <version>'.\n", .{});
}
} else if (std.mem.eql(u8, scmd, "zls")) {
// Handle ZLS installation if supported
std.debug.print("[Unsupported] install zls\n", .{});
} else {
std.debug.print("Unknown subcommand '{s}'. Use 'install zig <version>' or 'install zls <version>'.\n", .{scmd});
}
} else if (param) |version| {
try install.from_version(version);
} else {
std.debug.print("Error: Please specify a version to install using 'install <version>'.\n", .{});
Expand Down
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