tests: add utf8filter passthrough program

Author: jengelh

.gitignore

@@ -81,6 +81,7 @@ Makefile.in
 /tests/oxcmail_ie
 /tests/ucvttest
 /tests/udb
+/tests/utf8filter
 /tests/utiltest
 /tests/vcard
 /tests/zendfake

Makefile.am

@@ -241,7 +241,7 @@ mapi_la_LDFLAGS += -Wl,--allow-shlib-undefined
 endif
 EXTRA_mapi_la_DEPENDENCIES = default.sym
 
-noinst_PROGRAMS = dldcheck tests/bdump tests/bodyconv tests/compress tests/dnsbl_check tests/exrpctest tests/gxl-383 tests/jsontest tests/lzxpress tests/oxcmail_ie tests/ucvttest tests/udb tests/utiltest tests/vcard tools/tzdump
+noinst_PROGRAMS = dldcheck tests/bdump tests/bodyconv tests/compress tests/dnsbl_check tests/exrpctest tests/gxl-383 tests/jsontest tests/lzxpress tests/oxcmail_ie tests/ucvttest tests/udb tests/utf8filter tests/utiltest tests/vcard tools/tzdump
 if HAVE_ESEDB
 noinst_PROGRAMS += tests/epv_unpack
 endif
@@ -272,6 +272,8 @@ tests_oxcmail_ie_SOURCES = tests/oxcmail_ie.cpp
 tests_oxcmail_ie_LDADD = ${libHX_LIBS} libgromox_common.la libgromox_mapi.la
 tests_ucvttest_SOURCES = tests/ucvttest.cpp
 tests_ucvttest_LDADD = libgromox_mapi.la
+tests_utf8filter_SOURCES = tests/utf8filter.cpp
+tests_utf8filter_LDADD = ${libHX_LIBS} libgromox_common.la
 tests_utiltest_SOURCES = tests/utiltest.cpp
 tests_utiltest_LDADD = ${libHX_LIBS} libgromox_common.la libgromox_mapi.la
 tests_vcard_SOURCES = tests/vcard.cpp

tests/utf8filter.cpp

@@ -0,0 +1,20 @@
+#include <cstdlib>
+#include <cstring>
+#include <memory>
+#include <libHX/io.h>
+#include <gromox/defs.h>
+#include <gromox/util.hpp>
+using namespace gromox;
+int main(int argc, char **argv)
+{
+	size_t size = 0;
+	std::unique_ptr<char[], stdlib_delete> buf(HX_slurp_fd(STDIN_FILENO, &size));
+	if (buf == nullptr)
+		return EXIT_FAILURE;
+	utf8_filter(buf.get());
+	auto z = strlen(buf.get());
+	auto ret = HXio_fullwrite(STDOUT_FILENO, buf.get(), z);
+	if (ret < 0 || static_cast<size_t>(ret) != z)
+		return EXIT_FAILURE;
+	return EXIT_SUCCESS;
+}