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const clap = @import("../clap.zig");
const bun = @import("root").bun;
const std = @import("std");
const debug = std.debug;
const heap = std.heap;
const mem = std.mem;
const testing = std.testing;
/// Deprecated: Use `parseEx` instead
pub fn ComptimeClap(
comptime Id: type,
comptime params: []const clap.Param(Id),
) type {
var _flags: usize = 0;
var _single_options: usize = 0;
var _multi_options: usize = 0;
var _converted_params: []const clap.Param(usize) = &[_]clap.Param(usize){};
for (params) |param| {
var index: usize = 0;
if (param.names.long != null or param.names.short != null) {
const ptr = switch (param.takes_value) {
.none => &_flags,
.one_optional, .one => &_single_options,
.many => &_multi_options,
};
index = ptr.*;
ptr.* += 1;
}
const converted = clap.Param(usize){
.id = index,
.names = param.names,
.takes_value = param.takes_value,
};
_converted_params = _converted_params ++ [_]clap.Param(usize){converted};
}
const flags = _flags;
const single_options = _single_options;
const multi_options = _multi_options;
const converted_params = _converted_params;
return struct {
single_options: [single_options]?[]const u8,
multi_options: [multi_options][]const []const u8,
flags: [flags]bool,
pos: []const []const u8,
passthrough_positionals: []const []const u8,
allocator: mem.Allocator,
pub fn parse(iter: anytype, opt: clap.ParseOptions) !@This() {
const allocator = opt.allocator;
var multis = [_]std.ArrayList([]const u8){undefined} ** multi_options;
for (&multis) |*multi| {
multi.* = std.ArrayList([]const u8).init(allocator);
}
var pos = std.ArrayList([]const u8).init(allocator);
var passthrough_positionals = std.ArrayList([]const u8).init(allocator);
var res = @This(){
.single_options = [_]?[]const u8{null} ** single_options,
.multi_options = [_][]const []const u8{undefined} ** multi_options,
.flags = [_]bool{false} ** flags,
.pos = undefined,
.allocator = allocator,
.passthrough_positionals = undefined,
};
var stream = clap.StreamingClap(usize, @typeInfo(@TypeOf(iter)).Pointer.child){
.params = converted_params,
.iter = iter,
};
while (try stream.next()) |arg| {
const param = arg.param;
if (param.names.long == null and param.names.short == null) {
try pos.append(arg.value.?);
if (opt.stop_after_positional_at > 0 and pos.items.len >= opt.stop_after_positional_at) {
var remaining_ = stream.iter.remain;
const first: []const u8 = if (remaining_.len > 0) bun.span(remaining_[0]) else "";
if (first.len > 0 and std.mem.eql(u8, first, "--")) {
remaining_ = remaining_[1..];
}
try passthrough_positionals.ensureTotalCapacityPrecise(remaining_.len);
for (remaining_) |arg_| {
// use bun.span due to the optimization for long strings
passthrough_positionals.appendAssumeCapacity(bun.span(arg_));
}
break;
}
} else if (param.takes_value == .one or param.takes_value == .one_optional) {
debug.assert(res.single_options.len != 0);
if (res.single_options.len != 0)
res.single_options[param.id] = arg.value orelse "";
} else if (param.takes_value == .many) {
debug.assert(multis.len != 0);
if (multis.len != 0)
try multis[param.id].append(arg.value.?);
} else {
debug.assert(res.flags.len != 0);
if (res.flags.len != 0)
res.flags[param.id] = true;
}
}
for (&multis, 0..) |*multi, i|
res.multi_options[i] = try multi.toOwnedSlice();
res.pos = try pos.toOwnedSlice();
res.passthrough_positionals = try passthrough_positionals.toOwnedSlice();
return res;
}
pub fn deinit(parser: @This()) void {
for (parser.multi_options) |o|
parser.allocator.free(o);
parser.allocator.free(parser.pos);
}
pub fn flag(parser: @This(), comptime name: []const u8) bool {
const param = comptime findParam(name);
if (param.takes_value != .none and param.takes_value != .one_optional)
@compileError(name ++ " is an option and not a flag.");
return parser.flags[param.id];
}
pub fn option(parser: @This(), comptime name: []const u8) ?[]const u8 {
const param = comptime findParam(name);
if (param.takes_value == .none)
@compileError(name ++ " is a flag and not an option.");
if (param.takes_value == .many)
@compileError(name ++ " takes many options, not one.");
return parser.single_options[param.id];
}
pub fn options(parser: @This(), comptime name: []const u8) []const []const u8 {
const param = comptime findParam(name);
if (param.takes_value == .none)
@compileError(name ++ " is a flag and not an option.");
if (param.takes_value == .one or param.takes_value == .one_optional)
@compileError(name ++ " takes one option, not multiple.");
return parser.multi_options[param.id];
}
pub fn positionals(parser: @This()) []const []const u8 {
return parser.pos;
}
pub fn remaining(parser: @This()) []const []const u8 {
return parser.passthrough_positionals;
}
pub fn hasFlag(comptime name: []const u8) bool {
comptime {
for (converted_params) |param| {
if (param.names.short) |s| {
if (mem.eql(u8, name, "-" ++ [_]u8{s}))
return true;
}
if (param.names.long) |l| {
if (mem.eql(u8, name, "--" ++ l))
return true;
}
}
return false;
}
}
fn findParam(comptime name: []const u8) clap.Param(usize) {
comptime {
for (converted_params) |param| {
if (param.names.short) |s| {
if (mem.eql(u8, name, "-" ++ [_]u8{s}))
return param;
}
if (param.names.long) |l| {
if (mem.eql(u8, name, "--" ++ l))
return param;
}
}
@compileError(name ++ " is not a parameter.");
}
}
};
}
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