add config support

includes/tomlc17-R260618/simple/.gitignore

@@ -0,0 +1,3 @@
+/simple
+/simplecpp
+/repro

includes/tomlc17-R260618/simple/Makefile

@@ -0,0 +1,59 @@
+EXEC = simple simplecpp
+
+# set up CFLAGS / CXXFLAGS
+CFLAGS = -std=c17 -Wmissing-declarations -Wall -Wextra -MMD 
+
+ifdef DEBUG
+    CFLAGS += -O0 -g -fsanitize=address,undefined
+else
+    CFLAGS += -O3 -DNDEBUG
+endif
+# Add -fpic only for non-Windows platforms
+ifneq ($(OS), Windows_NT)
+    CFLAGS += -fpic
+endif
+
+CXXFLAGS = $(subst -std=c17,-std=c++20,$(CFLAGS))
+
+# Test if C++ is available
+HAVE_CXX := $(shell command -v $(CXX) 2> /dev/null)
+
+# Test for C++20 support
+CXX20_SUPPORT := $(shell echo "int main(){}" | $(CXX) -std=c++20 -x c++ -c - -o /dev/null 2>/dev/null && echo yes || echo no)
+
+
+
+all: $(EXEC)
+
+simple: simple.c ../src/libtomlc17.a
+	$(CC) $(CFLAGS) -o $@ $@.c -L../src -ltomlc17
+
+repro: repro.c ../src/libtomlc17.a
+	$(CC) $(CFLAGS) -o $@ $@.c -L../src -ltomlc17
+
+
+simplecpp: simplecpp.cpp ../src/libtomlc17.a
+ifndef HAVE_CXX
+	@echo "INFO: skipping $@ because no $(CXX) compiler found"
+else ifeq ($(CXX20_SUPPORT),no)
+	@echo "INFO: skipping $@ because $(CXX) does not support C++20"
+else
+	$(CXX) $(CXXFLAGS) -o $@ $@.cpp -L ../src -l tomlc17
+endif
+
+-include simple.d simplecpp.d
+
+test: all
+	./simple > /dev/null
+	[ ! -x ./simplecpp ] || ./simplecpp > /dev/null
+
+clean:
+	rm -f *.o *.d *.a $(EXEC)
+
+distclean: clean
+
+format:
+	clang-format -i *.[ch] *.cpp
+
+.PHONY: all clean distclean format
+

includes/tomlc17-R260618/simple/repro.c

@@ -0,0 +1,46 @@
+#include "../src/tomlc17.h"
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+const char *PATH = "/tmp/t.toml";
+
+static void setup() {
+  const char *text =
+      "[default]\n"
+      "\n"
+      "[wayland_displays.\"$WAYLAND_DISPLAY\"]\n"
+      "seats = [ \"$XDG_SEAT\" ] \n"
+      "[[clipboards.Default.mime_type_groups]]\n"
+      "group = [ \"TEXT\", \"STRING\", \"UTF8_STRING\", \"text/plain\" ]\n"
+      "xxxx xx xx\n";
+
+  (void)text;
+  FILE *fp = fopen(PATH, "w");
+  fprintf(fp, "%s", text);
+  fclose(fp);
+}
+
+static void run() {
+
+  toml_result_t root = toml_parse_file_ex(PATH);
+
+  if (!root.ok) {
+    fprintf(stderr, "toml_parse_file_ex: %s\n", root.errmsg);
+    toml_free(root);
+    exit(-1);
+  }
+
+  toml_datum_t wayland_displays =
+      toml_seek(root.toptab, "main.wayland_displays");
+  toml_datum_t clipboards = toml_seek(root.toptab, "main.clipboards");
+  (void)
+
+      toml_free(root);
+}
+
+int main() {
+  setup();
+  run();
+  return 0;
+}

includes/tomlc17-R260618/simple/simple.c

@@ -0,0 +1,62 @@
+/*
+ * Parse the config file simple.toml:
+ *
+ * [server]
+ * host = "www.example.com"
+ * port = [8080, 8181, 8282]
+ *
+ */
+#include "../src/tomlc17.h"
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void error(const char *msg, const char *msg1) {
+  fprintf(stderr, "ERROR: %s%s\n", msg, msg1 ? msg1 : "");
+  exit(1);
+}
+
+int main() {
+  // Parse the toml file
+  toml_result_t result = toml_parse_file_ex("simple.toml");
+
+  // Check for parse error
+  if (!result.ok) {
+    error(result.errmsg, 0);
+  }
+
+  // Extract values
+  toml_datum_t host = toml_seek(result.toptab, "server.host");
+  toml_datum_t port = toml_seek(result.toptab, "server.port");
+
+  // Print server.host
+  if (host.type != TOML_STRING) {
+    error("missing or invalid 'server.host' property in config", 0);
+  }
+  printf("server.host = %s\n", host.u.s);
+
+  // Print server.port
+  if (port.type != TOML_ARRAY) {
+    error("missing or invalid 'server.port' property in config", 0);
+  }
+  printf("server.port = [");
+  for (int i = 0; i < port.u.arr.size; i++) {
+    toml_datum_t elem = port.u.arr.elem[i];
+    if (elem.type != TOML_INT64) {
+      error("server.port element not an integer", 0);
+    }
+    printf("%s%d", i ? ", " : "", (int)elem.u.int64);
+  }
+  printf("]\n");
+
+  // Negative test
+  toml_datum_t dummy = toml_seek(result.toptab, "server.dummy");
+  if (dummy.type != TOML_UNKNOWN) {
+    printf("Error: dummy element exists\n");
+    exit(1);
+  }
+
+  // Done!
+  toml_free(result);
+  return 0;
+}

includes/tomlc17-R260618/simple/simple.toml

@@ -0,0 +1,3 @@
+[server]
+host = "www.example.com"
+port = [8080, 8181, 8282]

includes/tomlc17-R260618/simple/simplecpp.cpp

@@ -0,0 +1,58 @@
+/*
+ * Parse the config file simple.toml:
+ *
+ * [server]
+ * host = "www.example.com"
+ * port = [8080, 8181, 8282]
+ *
+ */
+#include "../src/tomlcpp.hpp"
+#include <iostream>
+#include <vector>
+
+using std::cout;
+
+static void error(const char *msg) {
+  fprintf(stderr, "ERROR: %s\n", msg);
+  exit(1);
+}
+
+int main() {
+  // Parse the toml file
+  toml::Result result = toml::parse_file_ex("simple.toml");
+
+  // Check for parse error
+  if (!result.ok()) {
+    error(result.errmsg());
+  }
+
+  // Extract values
+  std::string host;
+  std::vector<int64_t> port;
+
+  try {
+    // use the Datum::get() method
+    host = result.get({"server", "host"})->as_str().value();
+  } catch (const std::bad_optional_access &ex) {
+    error("missing or invalid 'server.host' property in config");
+  }
+
+  try {
+    // use the Datum::seek() method
+    port = result.seek("server.port")->as_intvec().value();
+  } catch (const std::bad_optional_access &ex) {
+    error("missing or invalid 'server.port' property in config");
+  }
+
+  // Print values
+  cout << "server.host = " << host << "\n";
+  cout << "server.port = [";
+  for (size_t i = 0; i < port.size(); i++) {
+    cout << (i ? ", " : "") << port[i];
+  }
+  cout << "]\n";
+
+  // Done! No need to call toml_free(). Result::~Result() will handle
+  // destruction.
+  return 0;
+}