detz: M0 scaffold

taicpp/.clang-format

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+BasedOnStyle: LLVM
+IndentWidth: 4
+ColumnLimit: 100

taicpp/Makefile

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+CXX ?= g++
+CXXSTD = -std=c++23
+WARN = -Wall -Wextra
+CXXFLAGS ?= $(CXXSTD) $(WARN) -O2
+BUILD = build
+VERSION = $(shell cat VERSION)
+BIN = $(BUILD)/detz
+
+GEN_INC = $(BUILD)/gen
+VERSION_HPP = $(GEN_INC)/version.hpp
+
+SRCS = main.cpp src/cli/cli.cpp
+OBJS = $(BUILD)/main.o $(BUILD)/cli.o
+
+all: $(BIN)
+
+$(VERSION_HPP): VERSION
+	@mkdir -p $(GEN_INC)
+	@sed 's/@VERSION@/$(VERSION)/' src/cli/version.hpp.in > $@
+
+$(BUILD)/main.o: main.cpp src/cli/cli.h $(VERSION_HPP)
+	@mkdir -p $(BUILD)
+	$(CXX) $(CXXFLAGS) -I$(GEN_INC) -Isrc/cli -c main.cpp -o $@
+
+$(BUILD)/cli.o: src/cli/cli.cpp src/cli/cli.h $(VERSION_HPP)
+	@mkdir -p $(BUILD)
+	$(CXX) $(CXXFLAGS) -I$(GEN_INC) -Isrc/cli -c src/cli/cli.cpp -o $@
+
+$(BIN): $(OBJS)
+	$(CXX) $(CXXFLAGS) $(OBJS) -o $@
+
+test: $(BIN) $(BUILD)/detz_test
+	./$(BUILD)/detz_test
+	./$(BIN) --version
+
+$(BUILD)/detz_test: tests/test_main.cpp src/cli/cli.cpp $(VERSION_HPP)
+	@mkdir -p $(BUILD)
+	$(CXX) $(CXXFLAGS) -I$(GEN_INC) -Isrc/cli tests/test_main.cpp src/cli/cli.cpp -o $@
+
+lint:
+	$(CXX) $(CXXSTD) $(WARN) -Werror -fsyntax-only main.cpp -I$(GEN_INC) -Isrc/cli || true
+
+version-bump:
+	tools/version-bump.sh $(PART)
+
+changelog:
+	tools/changelog.sh "$(MSG)"
+
+tag:
+	tools/tag.sh
+
+release:
+	PART=$(PART) MSG="$(MSG)" tools/release.sh
+
+clean:
+	rm -rf $(BUILD)
+
+-include src/*/*.mk

taicpp/VERSION

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+0.1.0

taicpp/build/gen/version.hpp

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+#pragma once
+#include <string_view>
+namespace detz { constexpr std::string_view kVersion = "0.1.0"; }

taicpp/main.cpp

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+#include "src/cli/cli.h"
+int main(int argc, char** argv) { return detz::cli::DetzCli{}.run(argc, argv); }

taicpp/src/cli/cli.cpp

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+#include "cli.h"
+#include "version.hpp"
+#include <cstdio>
+namespace detz::cli {
+Command Parser::parse(int argc, char** argv) {
+    Command c;
+    if (argc > 1) { c.name = argv[1]; for (int i = 2; i < argc; ++i) c.args.emplace_back(argv[i]); }
+    return c;
+}
+int Command::run() {
+    if (name == "--version" || name == "version") { std::puts(kVersion.data()); return 0; }
+    std::puts("detz — C++23 port of tai.py. See --help. Version:");
+    std::puts(kVersion.data());
+    return 0;
+}
+int DetzCli::run(int argc, char** argv) { return Parser{}.parse(argc, argv).run(); }
+} // namespace detz::cli

taicpp/src/cli/cli.h

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+#pragma once
+#include <string>
+#include <vector>
+namespace detz::cli {
+struct Command { std::string name{"--help"}; std::vector<std::string> args; int run(); };
+class Parser { public: Command parse(int argc, char** argv); };
+class DetzCli { public: int run(int argc, char** argv); };
+// molo-subcommand adapter stub (M1 wires `molo detz` registration here).
+class MoloSubcommand { public: const char* name() const { return "detz"; } };
+} // namespace detz::cli

taicpp/src/cli/version.hpp.in

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+#pragma once
+#include <string_view>
+namespace detz { constexpr std::string_view kVersion = "@VERSION@"; }

taicpp/tests/test_main.cpp

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+#include "../src/cli/cli.h"
+#include <cassert>
+#include <cstdio>
+int main() {
+    detz::cli::Parser p;
+    const char* a0 = "detz";
+    auto c = p.parse(1, (char**)&a0);
+    assert(c.name == "--help");
+    assert(c.run() == 0);
+    std::puts("M0 OK");
+    return 0;
+}

taicpp/tools/changelog.sh

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+#!/bin/sh
+set -e
+msg=${1:-update}
+v=$(cat VERSION); d=$(date +%F)
+{ echo "# Changelog"; echo; echo "## [$v] - $d"; echo "- $msg"; echo; tail -n +2 CHANGELOG.md; } > CHANGELOG.md.new
+mv CHANGELOG.md.new CHANGELOG.md
+echo "changelog updated"

taicpp/tools/release.sh

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+#!/bin/sh
+set -e
+: "${PART:=patch}"
+tools/version-bump.sh "$PART"
+tools/changelog.sh "$MSG"
+git add VERSION CHANGELOG.md 2>/dev/null || true
+git commit -m "detz: release v$(cat VERSION) $MSG" 2>/dev/null || true
+tools/tag.sh

taicpp/tools/tag.sh

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+#!/bin/sh
+set -e
+v=$(cat VERSION)
+git tag -a "detz-v$v" -m "detz v$v" 2>/dev/null || echo "tag detz-v$v (no git or exists)"

taicpp/tools/version-bump.sh

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+#!/bin/sh
+set -e
+part=${1:-patch}
+v=$(cat VERSION)
+maj=${v%%.*}; rest=${v#*.}; min=${rest%%.*}; pat=${rest##*.}
+case $part in major) maj=$((maj+1)); min=0; pat=0;; minor) min=$((min+1)); pat=0;; *) pat=$((pat+1));; esac
+echo "$maj.$min.$pat" > VERSION
+echo "VERSION -> $(cat VERSION)"