fs/Path: move configuration code to Config.cxx

11 files changed, 284 insertions, 140 deletions

diff --git a/Makefile.am b/Makefile.am
index 374c6d781..56e4d6c1c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -344,6 +344,8 @@ endif
 libfs_a_SOURCES = \
 	src/fs/Domain.cxx src/fs/Domain.hxx \
 	src/fs/Limits.hxx \
+	src/fs/Config.cxx src/fs/Config.hxx \
+	src/fs/Charset.cxx src/fs/Charset.hxx \
 	src/fs/Path.cxx src/fs/Path.hxx \
 	src/fs/FileSystem.cxx src/fs/FileSystem.hxx \
 	src/fs/DirectoryReader.hxx
diff --git a/src/DatabaseSave.cxx b/src/DatabaseSave.cxx
index 452a7828a..67df236ef 100644
--- a/src/DatabaseSave.cxx
+++ b/src/DatabaseSave.cxx
@@ -27,7 +27,7 @@
 #include "TextFile.hxx"
 #include "tag/Tag.hxx"
 #include "tag/TagSettings.h"
-#include "fs/Path.hxx"
+#include "fs/Charset.hxx"
 #include "util/Error.hxx"
 #include "Log.hxx"
 
@@ -57,7 +57,7 @@ db_save_internal(FILE *fp, const Directory *music_root)
 	fprintf(fp, DB_FORMAT_PREFIX "%u\n", DB_FORMAT);
 	fprintf(fp, "%s%s\n", DIRECTORY_MPD_VERSION, VERSION);
 	fprintf(fp, "%s%s\n", DIRECTORY_FS_CHARSET,
-		Path::GetFSCharset().c_str());
+		GetFSCharset().c_str());
 
 	for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; ++i)
 		if (!ignore_tag_items[i])
@@ -110,7 +110,7 @@ db_load_internal(TextFile &file, Directory *music_root, Error &error)
 			found_charset = true;
 
 			new_charset = line + sizeof(DIRECTORY_FS_CHARSET) - 1;
-			const std::string &old_charset = Path::GetFSCharset();
+			const std::string &old_charset = GetFSCharset();
 			if (!old_charset.empty()
 			    && strcmp(new_charset, old_charset.c_str())) {
 				error.Format(db_domain,
diff --git a/src/Main.cxx b/src/Main.cxx
index 3c88fc3c4..14820f0db 100644
--- a/src/Main.cxx
+++ b/src/Main.cxx
@@ -49,6 +49,7 @@
 #include "event/Loop.hxx"
 #include "IOThread.hxx"
 #include "fs/Path.hxx"
+#include "fs/Config.hxx"
 #include "PlaylistRegistry.hxx"
 #include "ZeroconfGlue.hxx"
 #include "DecoderList.hxx"
@@ -412,7 +413,7 @@ int mpd_main(int argc, char *argv[])
 	GlobalEvents::Register(GlobalEvents::SHUTDOWN, shutdown_event_emitted);
 #endif
 
-	Path::GlobalInit();
+	ConfigureFS();
 
 	if (!glue_mapper_init(error)) {
 		LogError(error);
diff --git a/src/Mapper.cxx b/src/Mapper.cxx
index 6e3b894dd..b89f83cd7 100644
--- a/src/Mapper.cxx
+++ b/src/Mapper.cxx
@@ -26,6 +26,7 @@
 #include "Directory.hxx"
 #include "Song.hxx"
 #include "fs/Path.hxx"
+#include "fs/Charset.hxx"
 #include "fs/FileSystem.hxx"
 #include "fs/DirectoryReader.hxx"
 #include "util/Domain.hxx"
@@ -236,7 +237,7 @@ map_fs_to_utf8(const char *path_fs)
 			return std::string();
 	}
 
-	return Path::ToUTF8(path_fs);
+	return PathToUTF8(path_fs);
 }
 
 const Path &
diff --git a/src/PlaylistFile.cxx b/src/PlaylistFile.cxx
index 19085f496..ea6b3c914 100644
--- a/src/PlaylistFile.cxx
+++ b/src/PlaylistFile.cxx
@@ -33,6 +33,7 @@
 #include "Idle.hxx"
 #include "fs/Limits.hxx"
 #include "fs/Path.hxx"
+#include "fs/Charset.hxx"
 #include "fs/FileSystem.hxx"
 #include "fs/DirectoryReader.hxx"
 #include "util/UriUtil.hxx"
@@ -158,7 +159,7 @@ LoadPlaylistFileInfo(PlaylistInfo &info,
 
 	char *name = g_strndup(name_fs_str,
 			       name_length + 1 - sizeof(PLAYLIST_FILE_SUFFIX));
-	std::string name_utf8 = Path::ToUTF8(name);
+	std::string name_utf8 = PathToUTF8(name);
 	g_free(name);
 	if (name_utf8.empty())
 		return false;
@@ -248,7 +249,7 @@ LoadPlaylistFile(const char *utf8path, Error &error)
 			uri_utf8 = map_fs_to_utf8(s);
 			if (uri_utf8.empty()) {
 				if (Path::IsAbsoluteFS(s)) {
-					uri_utf8 = Path::ToUTF8(s);
+					uri_utf8 = PathToUTF8(s);
 					if (uri_utf8.empty())
 						continue;
 
@@ -257,7 +258,7 @@ LoadPlaylistFile(const char *utf8path, Error &error)
 					continue;
 			}
 		} else {
-			uri_utf8 = Path::ToUTF8(s);
+			uri_utf8 = PathToUTF8(s);
 			if (uri_utf8.empty())
 				continue;
 		}
diff --git a/src/fs/Charset.cxx b/src/fs/Charset.cxx
new file mode 100644
index 000000000..5a06bf949
--- /dev/null
+++ b/src/fs/Charset.cxx
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2003-2013 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 "Charset.hxx"
+#include "Domain.hxx"
+#include "Limits.hxx"
+#include "system/FatalError.hxx"
+#include "util/Error.hxx"
+#include "util/Domain.hxx"
+#include "Log.hxx"
+
+#include <glib.h>
+
+#include <assert.h>
+#include <string.h>
+
+/**
+ * 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
+IsSupportedCharset(const char *charset)
+{
+	/* convert a space to check if the charset is valid */
+	char *test = g_convert(" ", 1, charset, "UTF-8", NULL, NULL, NULL);
+	if (test == NULL)
+		return false;
+
+	g_free(test);
+	return true;
+}
+
+void
+SetFSCharset(const char *charset)
+{
+	assert(charset != NULL);
+
+	if (!IsSupportedCharset(charset))
+		FormatFatalError("invalid filesystem charset: %s", charset);
+
+	fs_charset = charset;
+
+	FormatDebug(path_domain,
+		    "SetFSCharset: fs charset is: %s", fs_charset.c_str());
+}
+
+const std::string &
+GetFSCharset()
+{
+	return fs_charset;
+}
+
+std::string
+PathToUTF8(const char *path_fs)
+{
+	if (path_fs == nullptr)
+		return std::string();
+
+	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();
+
+	return std::string(path_utf8, sizeof(path_utf8) - out_left);
+}
+
+char *
+PathFromUTF8(const char *path_utf8)
+{
+	return g_convert(path_utf8, -1,
+			 fs_charset.c_str(), "utf-8",
+			 nullptr, nullptr, nullptr);
+}
diff --git a/src/fs/Charset.hxx b/src/fs/Charset.hxx
new file mode 100644
index 000000000..58b5a090a
--- /dev/null
+++ b/src/fs/Charset.hxx
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2003-2013 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_FS_CHARSET_HXX
+#define MPD_FS_CHARSET_HXX
+
+#include "check.h"
+#include "Compiler.h"
+
+#include <string>
+
+/**
+ * Gets file system character set name.
+ */
+gcc_const
+const std::string &
+GetFSCharset();
+
+void
+SetFSCharset(const char *charset);
+
+/**
+ * Convert the path to UTF-8.
+ * Returns empty string on error or if #path_fs is null pointer.
+ */
+gcc_pure
+std::string
+PathToUTF8(const char *path_fs);
+
+gcc_malloc
+char *
+PathFromUTF8(const char *path_utf8);
+
+#endif
diff --git a/src/fs/Config.cxx b/src/fs/Config.cxx
new file mode 100644
index 000000000..e08e9f0bf
--- /dev/null
+++ b/src/fs/Config.cxx
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2003-2013 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 "Config.hxx"
+#include "Charset.hxx"
+#include "Domain.hxx"
+#include "ConfigGlobal.hxx"
+#include "Log.hxx"
+#include "Compiler.h"
+
+#include <glib.h>
+
+#include <assert.h>
+#include <string.h>
+
+#ifdef WIN32
+#include <windows.h> // for GetACP()
+#include <stdio.h> // for sprintf()
+#endif
+
+void
+ConfigureFS()
+{
+	const char *charset = NULL;
+
+	charset = config_get_string(CONF_FS_CHARSET, NULL);
+	if (charset == NULL) {
+#ifndef WIN32
+		const gchar **encodings;
+		g_get_filename_charsets(&encodings);
+
+		if (encodings[0] != NULL && *encodings[0] != '\0')
+			charset = encodings[0];
+#else
+		/* Glib claims that file system encoding is always utf-8
+		 * on native Win32 (i.e. not Cygwin).
+		 * However this is true only if <gstdio.h> helpers are used.
+		 * MPD uses regular <stdio.h> functions.
+		 * Those functions use encoding determined by GetACP(). */
+		static char win_charset[13];
+		sprintf(win_charset, "cp%u", GetACP());
+		charset = win_charset;
+#endif
+	}
+
+	if (charset) {
+		SetFSCharset(charset);
+	} else {
+		LogDebug(path_domain,
+			 "setting filesystem charset to ISO-8859-1");
+		SetFSCharset("ISO-8859-1");
+	}
+}
diff --git a/src/fs/Config.hxx b/src/fs/Config.hxx
new file mode 100644
index 000000000..9d7035706
--- /dev/null
+++ b/src/fs/Config.hxx
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2003-2013 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_FS_CONFIG_HXX
+#define MPD_FS_CONFIG_HXX
+
+#include "check.h"
+
+/**
+ * Performs global one-time initialization of this class.
+ */
+void
+ConfigureFS();
+
+#endif
diff --git a/src/fs/Path.cxx b/src/fs/Path.cxx
index be2661f63..4a4292d05 100644
--- a/src/fs/Path.cxx
+++ b/src/fs/Path.cxx
@@ -20,11 +20,8 @@
 #include "config.h"
 #include "Path.hxx"
 #include "Domain.hxx"
-#include "Limits.hxx"
-#include "ConfigGlobal.hxx"
-#include "system/FatalError.hxx"
+#include "Charset.hxx"
 #include "util/Error.hxx"
-#include "Log.hxx"
 #include "Compiler.h"
 
 #include <glib.h>
@@ -37,18 +34,6 @@
 #include <stdio.h> // for sprintf()
 #endif
 
-/**
- * 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;
-
 inline Path::Path(Donate, pointer _value)
 	:value(_value) {
 	g_free(_value);
@@ -63,42 +48,9 @@ Path::Build(const_pointer a, const_pointer b)
 	return Path(Donate(), g_build_filename(a, b, nullptr));
 }
 
-std::string Path::ToUTF8(const_pointer path_fs)
-{
-	if (path_fs == nullptr)
-		return std::string();
-
-	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();
-
-	return std::string(path_utf8, sizeof(path_utf8) - out_left);
-}
-
 Path Path::FromUTF8(const char *path_utf8)
 {
-	gchar *p;
-
-	p = g_convert(path_utf8, -1,
-		      fs_charset.c_str(), "utf-8",
-		      NULL, NULL, NULL);
-
-	return Path(Donate(), p);
+	return Path(Donate(), ::PathFromUTF8(path_utf8));
 }
 
 Path
@@ -119,69 +71,10 @@ Path::GetDirectoryName() const
 	return Path(Donate(), g_path_get_dirname(value.c_str()));
 }
 
-gcc_pure
-static bool
-IsSupportedCharset(const char *charset)
-{
-	/* convert a space to check if the charset is valid */
-	char *test = g_convert(" ", 1, charset, "UTF-8", NULL, NULL, NULL);
-	if (test == NULL)
-		return false;
-
-	g_free(test);
-	return true;
-}
-
-static void
-SetFSCharset(const char *charset)
+std::string
+Path::ToUTF8() const
 {
-	assert(charset != NULL);
-
-	if (!IsSupportedCharset(charset))
-		FormatFatalError("invalid filesystem charset: %s", charset);
-
-	fs_charset = charset;
-
-	FormatDebug(path_domain,
-		    "SetFSCharset: fs charset is: %s", fs_charset.c_str());
-}
-
-const std::string &Path::GetFSCharset()
-{
-	return fs_charset;
-}
-
-void Path::GlobalInit()
-{
-	const char *charset = NULL;
-
-	charset = config_get_string(CONF_FS_CHARSET, NULL);
-	if (charset == NULL) {
-#ifndef WIN32
-		const gchar **encodings;
-		g_get_filename_charsets(&encodings);
-
-		if (encodings[0] != NULL && *encodings[0] != '\0')
-			charset = encodings[0];
-#else
-		/* Glib claims that file system encoding is always utf-8
-		 * on native Win32 (i.e. not Cygwin).
-		 * However this is true only if <gstdio.h> helpers are used.
-		 * MPD uses regular <stdio.h> functions.
-		 * Those functions use encoding determined by GetACP(). */
-		static char win_charset[13];
-		sprintf(win_charset, "cp%u", GetACP());
-		charset = win_charset;
-#endif
-	}
-
-	if (charset) {
-		SetFSCharset(charset);
-	} else {
-		LogDebug(path_domain,
-			 "setting filesystem charset to ISO-8859-1");
-		SetFSCharset("ISO-8859-1");
-	}
+	return ::PathToUTF8(value.c_str());
 }
 
 const char *
diff --git a/src/fs/Path.hxx b/src/fs/Path.hxx
index 10709219b..38112feee 100644
--- a/src/fs/Path.hxx
+++ b/src/fs/Path.hxx
@@ -130,23 +130,6 @@ public:
 	static Path FromUTF8(const char *path_utf8, Error &error);
 
 	/**
-	 * Convert the path to UTF-8.
-	 * Returns empty string on error or if #path_fs is null pointer.
-	 */
-	gcc_pure
-	static std::string ToUTF8(const_pointer path_fs);
-
-	/**
-	 * Performs global one-time initialization of this class.
-	 */
-	static void GlobalInit();
-
-	/**
-	 * Gets file system character set name.
-	 */
-	static const std::string &GetFSCharset();
-
-	/**
 	 * Copy a #Path object.
 	 */
 	Path &operator=(const Path &) = default;
@@ -209,9 +192,8 @@ public:
 	 * Returns empty string on error or if this instance is "nulled"
 	 * (#IsNull returns true).
 	 */
-	std::string ToUTF8() const {
-		return ToUTF8(value.c_str());
-	}
+	gcc_pure
+	std::string ToUTF8() const;
 
 	/**
 	 * Gets directory name of this path.