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const clap = @import("../clap.zig");
const std = @import("std");
const debug = std.debug;
const heap = std.heap;
const io = std.io;
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 {
comptime var flags: usize = 0;
comptime var single_options: usize = 0;
comptime var multi_options: usize = 0;
comptime var converted_params: []const 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 => &single_options,
.many => &multi_options,
};
index = ptr.*;
ptr.* += 1;
}
converted_params = converted_params ++ [_]clap.Param(usize){.{
.id = index,
.names = param.names,
.takes_value = param.takes_value,
}};
}
return struct {
multi_options: [multi_options][]const []const u8,
single_options: [single_options][]const u8,
single_options_is_set: std.PackedIntArray(u1, single_options),
flags: std.PackedIntArray(u1, flags),
pos: []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 res = @This(){
.multi_options = .{undefined} ** multi_options,
.single_options = .{undefined} ** single_options,
.single_options_is_set = std.PackedIntArray(u1, single_options).init(
.{0} ** single_options,
),
.flags = std.PackedIntArray(u1, flags).init(.{0} ** flags),
.pos = undefined,
.allocator = allocator,
};
var stream = clap.StreamingClap(usize, @typeInfo(@TypeOf(iter)).Pointer.child){
.params = converted_params,
.iter = iter,
.diagnostic = opt.diagnostic,
};
while (try stream.next()) |arg| {
const param = arg.param;
if (param.names.long == null and param.names.short == null) {
try pos.append(arg.value.?);
} else if (param.takes_value == .one) {
debug.assert(res.single_options.len != 0);
if (res.single_options.len != 0) {
res.single_options[param.id] = arg.value.?;
res.single_options_is_set.set(param.id, 1);
}
} 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.set(param.id, 1);
}
}
for (multis) |*multi, i|
res.multi_options[i] = multi.toOwnedSlice();
res.pos = pos.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)
@compileError(name ++ " is an option and not a flag.");
return parser.flags.get(param.id) != 0;
}
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.");
if (parser.single_options_is_set.get(param.id) == 0)
return null;
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)
@compileError(name ++ " takes one option, not multiple.");
return parser.multi_options[param.id];
}
pub fn positionals(parser: @This()) []const []const u8 {
return parser.pos;
}
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.");
}
}
};
}
test "" {
const params = comptime &.{
clap.parseParam("-a, --aa") catch unreachable,
clap.parseParam("-b, --bb") catch unreachable,
clap.parseParam("-c, --cc <V>") catch unreachable,
clap.parseParam("-d, --dd <V>...") catch unreachable,
clap.parseParam("<P>") catch unreachable,
};
var iter = clap.args.SliceIterator{
.args = &.{
"-a", "-c", "0", "something", "-d", "a", "--dd", "b",
},
};
var args = try clap.parseEx(clap.Help, params, &iter, .{ .allocator = testing.allocator });
defer args.deinit();
try testing.expect(args.flag("-a"));
try testing.expect(args.flag("--aa"));
try testing.expect(!args.flag("-b"));
try testing.expect(!args.flag("--bb"));
try testing.expectEqualStrings("0", args.option("-c").?);
try testing.expectEqualStrings("0", args.option("--cc").?);
try testing.expectEqual(@as(usize, 1), args.positionals().len);
try testing.expectEqualStrings("something", args.positionals()[0]);
try testing.expectEqualSlices([]const u8, &.{ "a", "b" }, args.options("-d"));
try testing.expectEqualSlices([]const u8, &.{ "a", "b" }, args.options("--dd"));
}
test "empty" {
var iter = clap.args.SliceIterator{ .args = &.{} };
var args = try clap.parseEx(u8, &.{}, &iter, .{ .allocator = testing.allocator });
defer args.deinit();
}
fn testErr(
comptime params: []const clap.Param(u8),
args_strings: []const []const u8,
expected: []const u8,
) !void {
var diag = clap.Diagnostic{};
var iter = clap.args.SliceIterator{ .args = args_strings };
var args = clap.parseEx(u8, params, &iter, .{
.allocator = testing.allocator,
.diagnostic = &diag,
}) catch |err| {
var buf: [1024]u8 = undefined;
var fbs = io.fixedBufferStream(&buf);
diag.report(fbs.writer(), err) catch return error.TestFailed;
try testing.expectEqualStrings(expected, fbs.getWritten());
return;
};
try testing.expect(false);
}
test "errors" {
const params = [_]clap.Param(u8){
.{
.id = 0,
.names = .{ .short = 'a', .long = "aa" },
},
.{
.id = 1,
.names = .{ .short = 'c', .long = "cc" },
.takes_value = .one,
},
};
try testErr(¶ms, &.{"q"}, "Invalid argument 'q'\n");
try testErr(¶ms, &.{"-q"}, "Invalid argument '-q'\n");
try testErr(¶ms, &.{"--q"}, "Invalid argument '--q'\n");
try testErr(¶ms, &.{"--q=1"}, "Invalid argument '--q'\n");
try testErr(¶ms, &.{"-a=1"}, "The argument '-a' does not take a value\n");
try testErr(¶ms, &.{"--aa=1"}, "The argument '--aa' does not take a value\n");
try testErr(¶ms, &.{"-c"}, "The argument '-c' requires a value but none was supplied\n");
try testErr(
¶ms,
&.{"--cc"},
"The argument '--cc' requires a value but none was supplied\n",
);
}
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