Initial commit
This commit is contained in:
commit
cf88d546cd
2
.gitignore
vendored
Normal file
2
.gitignore
vendored
Normal file
|
|
@ -0,0 +1,2 @@
|
|||
.zig-cache/
|
||||
zig-out/
|
||||
21
LICENSE
Normal file
21
LICENSE
Normal file
|
|
@ -0,0 +1,21 @@
|
|||
MIT License
|
||||
|
||||
Copyright (c) 2024 Cameron Reed
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
91
build.zig
Normal file
91
build.zig
Normal file
|
|
@ -0,0 +1,91 @@
|
|||
const std = @import("std");
|
||||
|
||||
// Although this function looks imperative, note that its job is to
|
||||
// declaratively construct a build graph that will be executed by an external
|
||||
// runner.
|
||||
pub fn build(b: *std.Build) void {
|
||||
// Standard target options allows the person running `zig build` to choose
|
||||
// what target to build for. Here we do not override the defaults, which
|
||||
// means any target is allowed, and the default is native. Other options
|
||||
// for restricting supported target set are available.
|
||||
const target = b.standardTargetOptions(.{});
|
||||
|
||||
// Standard optimization options allow the person running `zig build` to select
|
||||
// between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
|
||||
// set a preferred release mode, allowing the user to decide how to optimize.
|
||||
const optimize = b.standardOptimizeOption(.{});
|
||||
|
||||
const lib = b.addStaticLibrary(.{
|
||||
.name = "zig-args",
|
||||
// In this case the main source file is merely a path, however, in more
|
||||
// complicated build scripts, this could be a generated file.
|
||||
.root_source_file = b.path("src/root.zig"),
|
||||
.target = target,
|
||||
.optimize = optimize,
|
||||
});
|
||||
|
||||
// This declares intent for the library to be installed into the standard
|
||||
// location when the user invokes the "install" step (the default step when
|
||||
// running `zig build`).
|
||||
b.installArtifact(lib);
|
||||
|
||||
const exe = b.addExecutable(.{
|
||||
.name = "zig-args-test",
|
||||
.root_source_file = b.path("src/main.zig"),
|
||||
.target = target,
|
||||
.optimize = optimize,
|
||||
});
|
||||
|
||||
// This declares intent for the executable to be installed into the
|
||||
// standard location when the user invokes the "install" step (the default
|
||||
// step when running `zig build`).
|
||||
b.installArtifact(exe);
|
||||
|
||||
// This *creates* a Run step in the build graph, to be executed when another
|
||||
// step is evaluated that depends on it. The next line below will establish
|
||||
// such a dependency.
|
||||
const run_cmd = b.addRunArtifact(exe);
|
||||
|
||||
// By making the run step depend on the install step, it will be run from the
|
||||
// installation directory rather than directly from within the cache directory.
|
||||
// This is not necessary, however, if the application depends on other installed
|
||||
// files, this ensures they will be present and in the expected location.
|
||||
run_cmd.step.dependOn(b.getInstallStep());
|
||||
|
||||
// This allows the user to pass arguments to the application in the build
|
||||
// command itself, like this: `zig build run -- arg1 arg2 etc`
|
||||
if (b.args) |args| {
|
||||
run_cmd.addArgs(args);
|
||||
}
|
||||
|
||||
// This creates a build step. It will be visible in the `zig build --help` menu,
|
||||
// and can be selected like this: `zig build run`
|
||||
// This will evaluate the `run` step rather than the default, which is "install".
|
||||
const run_step = b.step("run", "Run the app");
|
||||
run_step.dependOn(&run_cmd.step);
|
||||
|
||||
// Creates a step for unit testing. This only builds the test executable
|
||||
// but does not run it.
|
||||
const lib_unit_tests = b.addTest(.{
|
||||
.root_source_file = b.path("src/root.zig"),
|
||||
.target = target,
|
||||
.optimize = optimize,
|
||||
});
|
||||
|
||||
const run_lib_unit_tests = b.addRunArtifact(lib_unit_tests);
|
||||
|
||||
const exe_unit_tests = b.addTest(.{
|
||||
.root_source_file = b.path("src/main.zig"),
|
||||
.target = target,
|
||||
.optimize = optimize,
|
||||
});
|
||||
|
||||
const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);
|
||||
|
||||
// Similar to creating the run step earlier, this exposes a `test` step to
|
||||
// the `zig build --help` menu, providing a way for the user to request
|
||||
// running the unit tests.
|
||||
const test_step = b.step("test", "Run unit tests");
|
||||
test_step.dependOn(&run_lib_unit_tests.step);
|
||||
test_step.dependOn(&run_exe_unit_tests.step);
|
||||
}
|
||||
72
build.zig.zon
Normal file
72
build.zig.zon
Normal file
|
|
@ -0,0 +1,72 @@
|
|||
.{
|
||||
// This is the default name used by packages depending on this one. For
|
||||
// example, when a user runs `zig fetch --save <url>`, this field is used
|
||||
// as the key in the `dependencies` table. Although the user can choose a
|
||||
// different name, most users will stick with this provided value.
|
||||
//
|
||||
// It is redundant to include "zig" in this name because it is already
|
||||
// within the Zig package namespace.
|
||||
.name = "zig-argument-parser",
|
||||
|
||||
// This is a [Semantic Version](https://semver.org/).
|
||||
// In a future version of Zig it will be used for package deduplication.
|
||||
.version = "0.0.0",
|
||||
|
||||
// This field is optional.
|
||||
// This is currently advisory only; Zig does not yet do anything
|
||||
// with this value.
|
||||
//.minimum_zig_version = "0.11.0",
|
||||
|
||||
// This field is optional.
|
||||
// Each dependency must either provide a `url` and `hash`, or a `path`.
|
||||
// `zig build --fetch` can be used to fetch all dependencies of a package, recursively.
|
||||
// Once all dependencies are fetched, `zig build` no longer requires
|
||||
// internet connectivity.
|
||||
.dependencies = .{
|
||||
// See `zig fetch --save <url>` for a command-line interface for adding dependencies.
|
||||
//.example = .{
|
||||
// // When updating this field to a new URL, be sure to delete the corresponding
|
||||
// // `hash`, otherwise you are communicating that you expect to find the old hash at
|
||||
// // the new URL.
|
||||
// .url = "https://example.com/foo.tar.gz",
|
||||
//
|
||||
// // This is computed from the file contents of the directory of files that is
|
||||
// // obtained after fetching `url` and applying the inclusion rules given by
|
||||
// // `paths`.
|
||||
// //
|
||||
// // This field is the source of truth; packages do not come from a `url`; they
|
||||
// // come from a `hash`. `url` is just one of many possible mirrors for how to
|
||||
// // obtain a package matching this `hash`.
|
||||
// //
|
||||
// // Uses the [multihash](https://multiformats.io/multihash/) format.
|
||||
// .hash = "...",
|
||||
//
|
||||
// // When this is provided, the package is found in a directory relative to the
|
||||
// // build root. In this case the package's hash is irrelevant and therefore not
|
||||
// // computed. This field and `url` are mutually exclusive.
|
||||
// .path = "foo",
|
||||
|
||||
// // When this is set to `true`, a package is declared to be lazily
|
||||
// // fetched. This makes the dependency only get fetched if it is
|
||||
// // actually used.
|
||||
// .lazy = false,
|
||||
//},
|
||||
},
|
||||
|
||||
// Specifies the set of files and directories that are included in this package.
|
||||
// Only files and directories listed here are included in the `hash` that
|
||||
// is computed for this package. Only files listed here will remain on disk
|
||||
// when using the zig package manager. As a rule of thumb, one should list
|
||||
// files required for compilation plus any license(s).
|
||||
// Paths are relative to the build root. Use the empty string (`""`) to refer to
|
||||
// the build root itself.
|
||||
// A directory listed here means that all files within, recursively, are included.
|
||||
.paths = .{
|
||||
"build.zig",
|
||||
"build.zig.zon",
|
||||
"src",
|
||||
// For example...
|
||||
//"LICENSE",
|
||||
//"README.md",
|
||||
},
|
||||
}
|
||||
34
src/main.zig
Normal file
34
src/main.zig
Normal file
|
|
@ -0,0 +1,34 @@
|
|||
const std = @import("std");
|
||||
const arguments = @import("root.zig");
|
||||
|
||||
pub fn main() !void {
|
||||
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
|
||||
defer _ = gpa.deinit();
|
||||
const allocator = gpa.allocator();
|
||||
|
||||
var first = arguments.IntArgument.init(&[_][]const u8{"first"}, &[_]u8{'f'}, 0);
|
||||
var second = arguments.StringArgument.init(&[_][]const u8{"second"}, &[_]u8{'s'}, "");
|
||||
var third = arguments.BoolArgument.init(&[_][]const u8{"third"}, &[_]u8{'t'});
|
||||
var fourth = arguments.BoolArgument.init(&[_][]const u8{"fourth"}, &[_]u8{'x'});
|
||||
|
||||
var name = arguments.PositionalStringArgument.init("", true);
|
||||
var age = arguments.PositionalIntArgument.init(0, true);
|
||||
var optional = arguments.PositionalStringArgument.init("", false);
|
||||
|
||||
var args = [_]*arguments.Argument{ &first.arg, &second.arg, &third.arg, &fourth.arg };
|
||||
var posArgs = [_]*arguments.PositionalArgument{ &name.arg, &age.arg, &optional.arg };
|
||||
arguments.parse(allocator, &args, &posArgs) catch return;
|
||||
|
||||
if (first.found) {
|
||||
std.debug.print("First: {}\n", .{first.value});
|
||||
} else {
|
||||
std.debug.print("First:\n", .{});
|
||||
}
|
||||
std.debug.print("Second: {s}\n", .{if (second.found) second.value else "N/A"});
|
||||
std.debug.print("Third: {}\n", .{third.found});
|
||||
std.debug.print("Fourth: {}\n\n", .{fourth.found});
|
||||
|
||||
std.debug.print("Name: {s}\n", .{name.value});
|
||||
std.debug.print("Age: {}\n", .{age.value});
|
||||
std.debug.print("Optional: {s}\n", .{optional.value});
|
||||
}
|
||||
387
src/root.zig
Normal file
387
src/root.zig
Normal file
|
|
@ -0,0 +1,387 @@
|
|||
const std = @import("std");
|
||||
const builtin = @import("builtin");
|
||||
const testing = std.testing;
|
||||
|
||||
const ParseError = error{
|
||||
UnknownArgument,
|
||||
MissingArgumentValue,
|
||||
MissingPositionalArgument,
|
||||
BadPositionalArguments,
|
||||
InvalidInteger,
|
||||
};
|
||||
|
||||
const Parser = struct {
|
||||
current: []const u8 = undefined,
|
||||
isLongArg: bool = false,
|
||||
isShortArg: bool = false,
|
||||
|
||||
vtable: struct {
|
||||
next: *const fn (self: *Parser) bool,
|
||||
},
|
||||
|
||||
fn next(self: *Parser) bool {
|
||||
return self.vtable.next(self);
|
||||
}
|
||||
|
||||
fn parse(self: *Parser, args: []*Argument, posArgs: []*PositionalArgument) !void {
|
||||
if (args.len == 0 and posArgs.len == 0) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (posArgs.len > 1) {
|
||||
var i: usize = 0;
|
||||
while (i < posArgs.len - 1) {
|
||||
if (!posArgs[i].required and posArgs[i + 1].required) {
|
||||
std.debug.print("All required positional arguments must come before optional positional arguments\n", .{});
|
||||
return ParseError.BadPositionalArguments;
|
||||
}
|
||||
i += 1;
|
||||
}
|
||||
}
|
||||
|
||||
var posIndex: usize = 0;
|
||||
while (self.next()) {
|
||||
if (self.isLongArg) {
|
||||
const arg = self.current;
|
||||
self.findMatch(args, arg[2..]) catch |err| {
|
||||
switch (err) {
|
||||
ParseError.UnknownArgument => std.debug.print("Unknown argument {s}\n", .{arg}),
|
||||
ParseError.MissingArgumentValue => std.debug.print("Missing argument value for {s}\n", .{arg}),
|
||||
ParseError.InvalidInteger => std.debug.print("{s} expects an integer value, got {s} instead\n", .{ arg, self.current }),
|
||||
else => std.debug.print("Unexpected error occurred\n", .{}),
|
||||
}
|
||||
return err;
|
||||
};
|
||||
} else if (self.isShortArg) {
|
||||
// Short argument
|
||||
for (1..self.current.len) |i| {
|
||||
const arg = self.current[i];
|
||||
self.findShortMatches(args, arg, i == self.current.len - 1) catch |err| {
|
||||
switch (err) {
|
||||
ParseError.UnknownArgument => std.debug.print("Unknown argument -{c}\n", .{arg}),
|
||||
ParseError.MissingArgumentValue => std.debug.print("Missing argument value for -{c}\n", .{arg}),
|
||||
ParseError.InvalidInteger => std.debug.print("-{c} expects an integer value, got {s} instead\n", .{ arg, self.current }),
|
||||
else => std.debug.print("Unexpected error occurred\n", .{}),
|
||||
}
|
||||
return err;
|
||||
};
|
||||
}
|
||||
} else {
|
||||
// Positional Argument
|
||||
if (posIndex >= posArgs.len) {
|
||||
std.debug.print("Unknown argument {s}\n", .{self.current});
|
||||
return ParseError.UnknownArgument;
|
||||
}
|
||||
|
||||
posArgs[posIndex].parse(self.current) catch |err| {
|
||||
switch (err) {
|
||||
ParseError.InvalidInteger => std.debug.print("Expected integer positional argument, got {s} instead\n", .{self.current}),
|
||||
else => std.debug.print("Unexpected error occurred\n", .{}),
|
||||
}
|
||||
return err;
|
||||
};
|
||||
posIndex += 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (posIndex < posArgs.len and posArgs[posIndex].required) {
|
||||
std.debug.print("Missing required positional argument\n", .{});
|
||||
return ParseError.MissingPositionalArgument;
|
||||
}
|
||||
}
|
||||
|
||||
fn findMatch(self: *Parser, args: []*Argument, str: []const u8) !void {
|
||||
for (args) |arg| {
|
||||
if (arg.matches(str)) {
|
||||
try arg.parse(self);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
return ParseError.UnknownArgument;
|
||||
}
|
||||
|
||||
fn findShortMatches(self: *Parser, args: []*Argument, c: u8, last: bool) !void {
|
||||
for (args) |arg| {
|
||||
if (arg.shortMatches(c)) {
|
||||
if (last) {
|
||||
try arg.parse(self);
|
||||
} else {
|
||||
try arg.noVal();
|
||||
try arg.parse(self);
|
||||
}
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
return ParseError.UnknownArgument;
|
||||
}
|
||||
};
|
||||
|
||||
const ArgvParser = struct {
|
||||
index: usize,
|
||||
parser: Parser,
|
||||
|
||||
fn init() ArgvParser {
|
||||
return .{
|
||||
.index = 0,
|
||||
.parser = .{ .vtable = .{
|
||||
.next = ArgvParser.next,
|
||||
} },
|
||||
};
|
||||
}
|
||||
|
||||
fn next(parser: *Parser) bool {
|
||||
var self: *ArgvParser = @fieldParentPtr("parser", parser);
|
||||
|
||||
if (self.index + 1 >= std.os.argv.len) {
|
||||
return false;
|
||||
}
|
||||
|
||||
self.index += 1;
|
||||
self.parser.current = std.mem.span(std.os.argv[self.index]);
|
||||
self.parser.isLongArg = false;
|
||||
self.parser.isShortArg = false;
|
||||
if (self.parser.current.len >= 2 and self.parser.current[0] == '-') {
|
||||
self.parser.isShortArg = self.parser.current[1] != '-';
|
||||
if (self.parser.current.len >= 3) {
|
||||
self.parser.isLongArg = self.parser.current[1] == '-';
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
const AllocParser = struct {
|
||||
parser: Parser,
|
||||
current: []const u8,
|
||||
args: std.process.ArgIterator,
|
||||
|
||||
fn init(allocator: std.mem.Allocator) !AllocParser {
|
||||
var self = AllocParser{
|
||||
.args = try std.process.argsWithAllocator(allocator),
|
||||
.current = undefined,
|
||||
.parser = .{ .vtable = .{
|
||||
.next = AllocParser.next,
|
||||
} },
|
||||
};
|
||||
|
||||
_ = self.args.next();
|
||||
return self;
|
||||
}
|
||||
|
||||
fn deinit(self: *AllocParser) void {
|
||||
self.args.deinit();
|
||||
}
|
||||
|
||||
fn next(parser: *Parser) bool {
|
||||
var self: *AllocParser = @fieldParentPtr("parser", parser);
|
||||
const val = self.args.next();
|
||||
if (val == null) {
|
||||
return false;
|
||||
}
|
||||
|
||||
self.parser.current = val.?;
|
||||
self.parser.isLongArg = false;
|
||||
self.parser.isShortArg = false;
|
||||
if (self.parser.current.len >= 2 and self.parser.current[0] == '-') {
|
||||
self.parser.isShortArg = self.parser.current[1] != '-';
|
||||
if (self.parser.current.len >= 3) {
|
||||
self.parser.isLongArg = self.parser.current[1] == '-';
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
pub const Argument = struct {
|
||||
names: []const []const u8,
|
||||
shortNames: []const u8,
|
||||
|
||||
vtable: struct {
|
||||
parse: *const fn (arg: *Argument, parser: *Parser) ParseError!void,
|
||||
noVal: *const fn () ParseError!void,
|
||||
},
|
||||
|
||||
fn matches(self: *Argument, arg: []const u8) bool {
|
||||
for (self.names) |alias| {
|
||||
if (std.mem.eql(u8, arg, alias)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
fn shortMatches(self: *Argument, arg: u8) bool {
|
||||
for (self.shortNames) |alias| {
|
||||
if (arg == alias) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
fn parse(self: *Argument, parser: *Parser) ParseError!void {
|
||||
try self.vtable.parse(self, parser);
|
||||
}
|
||||
|
||||
fn noVal(self: *Argument) ParseError!void {
|
||||
return self.vtable.noVal();
|
||||
}
|
||||
};
|
||||
|
||||
pub const IntArgument = struct {
|
||||
arg: Argument,
|
||||
value: isize,
|
||||
found: bool,
|
||||
|
||||
pub fn init(names: []const []const u8, shortNames: []const u8, defaultValue: isize) IntArgument {
|
||||
return .{
|
||||
.found = false,
|
||||
.value = defaultValue,
|
||||
.arg = .{ .names = names, .shortNames = shortNames, .vtable = .{ .noVal = IntArgument.noVal, .parse = IntArgument.parse } },
|
||||
};
|
||||
}
|
||||
|
||||
fn parse(arg: *Argument, parser: *Parser) ParseError!void {
|
||||
var self: *IntArgument = @fieldParentPtr("arg", arg);
|
||||
|
||||
if (parser.next() and !parser.isLongArg) {
|
||||
self.found = true;
|
||||
self.value = std.fmt.parseInt(isize, parser.current, 0) catch {
|
||||
return ParseError.InvalidInteger;
|
||||
};
|
||||
} else {
|
||||
return ParseError.MissingArgumentValue;
|
||||
}
|
||||
}
|
||||
|
||||
fn noVal() ParseError!void {
|
||||
return ParseError.MissingArgumentValue;
|
||||
}
|
||||
};
|
||||
|
||||
pub const StringArgument = struct {
|
||||
arg: Argument,
|
||||
value: []const u8,
|
||||
found: bool,
|
||||
|
||||
pub fn init(names: []const []const u8, shortNames: []const u8, defaultVal: []const u8) StringArgument {
|
||||
return .{
|
||||
.found = false,
|
||||
.value = defaultVal,
|
||||
.arg = .{ .names = names, .shortNames = shortNames, .vtable = .{ .noVal = StringArgument.noVal, .parse = StringArgument.parse } },
|
||||
};
|
||||
}
|
||||
|
||||
fn parse(arg: *Argument, parser: *Parser) ParseError!void {
|
||||
var self: *StringArgument = @fieldParentPtr("arg", arg);
|
||||
|
||||
if (parser.next() and !parser.isLongArg and !parser.isShortArg) {
|
||||
self.found = true;
|
||||
self.value = parser.current;
|
||||
} else {
|
||||
return ParseError.MissingArgumentValue;
|
||||
}
|
||||
}
|
||||
|
||||
fn noVal() ParseError!void {
|
||||
return ParseError.MissingArgumentValue;
|
||||
}
|
||||
};
|
||||
|
||||
pub const BoolArgument = struct {
|
||||
arg: Argument,
|
||||
found: bool,
|
||||
|
||||
pub fn init(names: []const []const u8, shortNames: []const u8) BoolArgument {
|
||||
return .{
|
||||
.found = false,
|
||||
.arg = .{ .names = names, .shortNames = shortNames, .vtable = .{ .noVal = BoolArgument.noVal, .parse = BoolArgument.parse } },
|
||||
};
|
||||
}
|
||||
|
||||
fn parse(arg: *Argument, parser: *Parser) ParseError!void {
|
||||
_ = parser;
|
||||
|
||||
var self: *BoolArgument = @fieldParentPtr("arg", arg);
|
||||
self.found = true;
|
||||
}
|
||||
|
||||
fn noVal() ParseError!void {
|
||||
return;
|
||||
}
|
||||
};
|
||||
|
||||
pub const PositionalArgument = struct {
|
||||
required: bool,
|
||||
|
||||
vtable: struct {
|
||||
parse: *const fn (arg: *PositionalArgument, value: []const u8) ParseError!void,
|
||||
},
|
||||
|
||||
fn parse(self: *PositionalArgument, value: []const u8) ParseError!void {
|
||||
try self.vtable.parse(self, value);
|
||||
}
|
||||
};
|
||||
|
||||
pub const PositionalIntArgument = struct {
|
||||
arg: PositionalArgument,
|
||||
value: isize,
|
||||
found: bool,
|
||||
|
||||
pub fn init(defaultValue: isize, required: bool) PositionalIntArgument {
|
||||
return .{
|
||||
.found = false,
|
||||
.value = defaultValue,
|
||||
.arg = .{ .required = required, .vtable = .{ .parse = PositionalIntArgument.parse } },
|
||||
};
|
||||
}
|
||||
|
||||
fn parse(arg: *PositionalArgument, value: []const u8) ParseError!void {
|
||||
var self: *PositionalIntArgument = @fieldParentPtr("arg", arg);
|
||||
|
||||
self.found = true;
|
||||
self.value = std.fmt.parseInt(isize, value, 0) catch {
|
||||
return ParseError.InvalidInteger;
|
||||
};
|
||||
}
|
||||
};
|
||||
|
||||
pub const PositionalStringArgument = struct {
|
||||
arg: PositionalArgument,
|
||||
value: []const u8,
|
||||
found: bool,
|
||||
|
||||
pub fn init(defaultValue: []const u8, required: bool) PositionalStringArgument {
|
||||
return .{
|
||||
.found = false,
|
||||
.value = defaultValue,
|
||||
.arg = .{ .required = required, .vtable = .{ .parse = PositionalStringArgument.parse } },
|
||||
};
|
||||
}
|
||||
|
||||
fn parse(arg: *PositionalArgument, value: []const u8) ParseError!void {
|
||||
var self: *PositionalStringArgument = @fieldParentPtr("arg", arg);
|
||||
|
||||
self.found = true;
|
||||
self.value = value;
|
||||
}
|
||||
};
|
||||
|
||||
pub fn parse(allocator: std.mem.Allocator, args: []*Argument, posArgs: []*PositionalArgument) !void {
|
||||
var allocParser: AllocParser = try AllocParser.init(allocator);
|
||||
defer allocParser.deinit();
|
||||
|
||||
try allocParser.parser.parse(args, posArgs);
|
||||
}
|
||||
|
||||
pub fn parseArgv(args: []*Argument, posArgs: []*PositionalArgument) !void {
|
||||
var argvParser: ArgvParser = ArgvParser.init();
|
||||
|
||||
try argvParser.parser.parse(args, posArgs);
|
||||
}
|
||||
|
||||
test "basic add functionality" {}
|
||||
Loading…
Reference in New Issue
Block a user