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-rw-r--r--src/fs/Charset.cxx77
-rw-r--r--src/lib/icu/Converter.cxx80
-rw-r--r--src/lib/icu/Converter.hxx72
3 files changed, 165 insertions, 64 deletions
diff --git a/src/fs/Charset.cxx b/src/fs/Charset.cxx
index fb7313a35..453962c1f 100644
--- a/src/fs/Charset.cxx
+++ b/src/fs/Charset.cxx
@@ -23,12 +23,8 @@
#include "Limits.hxx"
#include "Log.hxx"
#include "Traits.hxx"
+#include "lib/icu/Converter.hxx"
#include "util/Error.hxx"
-#include "util/Domain.hxx"
-
-#ifdef HAVE_GLIB
-#include <glib.h>
-#endif
#include <algorithm>
@@ -37,49 +33,19 @@
#ifdef HAVE_FS_CHARSET
-static constexpr Domain convert_domain("convert");
-
-/**
- * Maximal number of bytes required to represent path name in UTF-8
- * (including nul-terminator).
- * This value is a rought estimate of upper bound.
- * It's based on path name limit in bytes (MPD_PATH_MAX)
- * and assumption that some weird encoding could represent some UTF-8 4 byte
- * sequences with single byte.
- */
-static constexpr size_t MPD_PATH_MAX_UTF8 = (MPD_PATH_MAX - 1) * 4 + 1;
-
static std::string fs_charset;
-gcc_pure
-static bool
-CheckCharset(const char *charset, Error &error)
-{
- /* convert a space to check if the charset is valid */
- GError *error2 = nullptr;
- char *test = g_convert(" ", 1, charset, "UTF-8", nullptr, nullptr, &error2);
- if (test == nullptr) {
- error.Set(convert_domain, error2->code, error2->message);
- g_error_free(error2);
- return false;
- }
-
- g_free(test);
- return true;
-}
+static IcuConverter *fs_converter;
bool
SetFSCharset(const char *charset, Error &error)
{
assert(charset != nullptr);
+ assert(fs_converter == nullptr);
- if (!CheckCharset(charset, error)) {
- error.FormatPrefix("Failed to initialize filesystem charset '%s': ",
- charset);
+ fs_converter = IcuConverter::Create(charset, error);
+ if (fs_converter == nullptr)
return false;
- }
-
- fs_charset = charset;
FormatDebug(path_domain,
"SetFSCharset: fs charset is: %s", fs_charset.c_str());
@@ -91,6 +57,10 @@ SetFSCharset(const char *charset, Error &error)
void
DeinitFSCharset()
{
+#ifdef HAVE_ICU_CONVERTER
+ delete fs_converter;
+ fs_converter = nullptr;
+#endif
}
const char *
@@ -122,7 +92,7 @@ PathToUTF8(const char *path_fs)
assert(path_fs != nullptr);
#ifdef HAVE_FS_CHARSET
- if (fs_charset.empty()) {
+ if (fs_converter == nullptr) {
#endif
auto result = std::string(path_fs);
FixSeparators(result);
@@ -130,26 +100,7 @@ PathToUTF8(const char *path_fs)
#ifdef HAVE_FS_CHARSET
}
- GIConv conv = g_iconv_open("utf-8", fs_charset.c_str());
- if (conv == reinterpret_cast<GIConv>(-1))
- return std::string();
-
- // g_iconv() does not need nul-terminator,
- // std::string could be created without it too.
- char path_utf8[MPD_PATH_MAX_UTF8 - 1];
- char *in = const_cast<char *>(path_fs);
- char *out = path_utf8;
- size_t in_left = strlen(path_fs);
- size_t out_left = sizeof(path_utf8);
-
- size_t ret = g_iconv(conv, &in, &in_left, &out, &out_left);
-
- g_iconv_close(conv);
-
- if (ret == static_cast<size_t>(-1) || in_left > 0)
- return std::string();
-
- auto result_path = std::string(path_utf8, sizeof(path_utf8) - out_left);
+ auto result_path = fs_converter->ToUTF8(path_fs);
FixSeparators(result_path);
return result_path;
#endif
@@ -162,12 +113,10 @@ PathFromUTF8(const char *path_utf8)
{
assert(path_utf8 != nullptr);
- if (fs_charset.empty())
+ if (fs_converter == nullptr)
return path_utf8;
- return g_convert(path_utf8, -1,
- fs_charset.c_str(), "utf-8",
- nullptr, nullptr, nullptr);
+ return fs_converter->FromUTF8(path_utf8);
}
#endif
diff --git a/src/lib/icu/Converter.cxx b/src/lib/icu/Converter.cxx
new file mode 100644
index 000000000..7378f8636
--- /dev/null
+++ b/src/lib/icu/Converter.cxx
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "Converter.hxx"
+#include "util/Error.hxx"
+#include "util/Domain.hxx"
+
+#include <string.h>
+
+#ifdef HAVE_GLIB
+static constexpr Domain g_iconv_domain("g_iconv");
+#endif
+
+#ifdef HAVE_ICU_CONVERTER
+
+IcuConverter *
+IcuConverter::Create(const char *charset, Error &error)
+{
+ GIConv to = g_iconv_open("utf-8", charset);
+ GIConv from = g_iconv_open(charset, "utf-8");
+ if (to == (GIConv)-1 || from == (GIConv)-1) {
+ if (to != (GIConv)-1)
+ g_iconv_close(to);
+ if (from != (GIConv)-1)
+ g_iconv_close(from);
+ error.Format(g_iconv_domain,
+ "Failed to initialize charset '%s'", charset);
+ return nullptr;
+ }
+
+ return new IcuConverter(to, from);
+}
+
+static std::string
+DoConvert(GIConv conv, const char *src)
+{
+ char buffer[4096];
+ char *in = const_cast<char *>(src);
+ char *out = buffer;
+ size_t in_left = strlen(src);
+ size_t out_left = sizeof(buffer);
+
+ size_t n = g_iconv(conv, &in, &in_left, &out, &out_left);
+
+ if (n == static_cast<size_t>(-1) || in_left > 0)
+ return std::string();
+
+ return std::string(buffer, sizeof(buffer) - out_left);
+}
+
+std::string
+IcuConverter::ToUTF8(const char *s) const
+{
+ return DoConvert(to_utf8, s);
+}
+
+std::string
+IcuConverter::FromUTF8(const char *s) const
+{
+ return DoConvert(from_utf8, s);
+}
+
+#endif
diff --git a/src/lib/icu/Converter.hxx b/src/lib/icu/Converter.hxx
new file mode 100644
index 000000000..f20dc6f7c
--- /dev/null
+++ b/src/lib/icu/Converter.hxx
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_ICU_CONVERTER_HXX
+#define MPD_ICU_CONVERTER_HXX
+
+#include "check.h"
+#include "Compiler.h"
+
+#ifdef HAVE_GLIB
+#include <glib.h>
+#define HAVE_ICU_CONVERTER
+#endif
+
+#ifdef HAVE_ICU_CONVERTER
+
+#include <string>
+
+class Error;
+
+/**
+ * This class can convert strings with a certain character set to and
+ * from UTF-8.
+ */
+class IcuConverter {
+ const GIConv to_utf8, from_utf8;
+
+ IcuConverter(GIConv _to, GIConv _from)
+ :to_utf8(_to), from_utf8(_from) {}
+
+public:
+ ~IcuConverter() {
+ g_iconv_close(to_utf8);
+ g_iconv_close(from_utf8);
+ }
+
+ static IcuConverter *Create(const char *charset, Error &error);
+
+ /**
+ * Convert the string to UTF-8.
+ * Returns empty string on error.
+ */
+ gcc_pure gcc_nonnull_all
+ std::string ToUTF8(const char *s) const;
+
+ /**
+ * Convert the string from UTF-8.
+ * Returns empty string on error.
+ */
+ gcc_pure gcc_nonnull_all
+ std::string FromUTF8(const char *s) const;
+};
+
+#endif
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-07 19:05:21 +0000