Start using fmt library

This is the first step for a full i18n (aseprite#124).

.gitmodules

@@ -57,3 +57,6 @@
 [submodule "third_party/giflib"]
 	path = third_party/giflib
 	url = https://github.com/aseprite/giflib.git
+[submodule "third_party/fmt"]
+	path = third_party/fmt
+	url = https://github.com/aseprite/fmt.git

docs/LICENSES.md

@@ -230,6 +230,34 @@ be used in advertising or otherwise to promote the sale, use or other dealings
 in this Software without prior written authorization of the copyright holder.
 ```
 
+# [fmt](https://github.com/fmtlib/fmt)
+
+```
+Copyright (c) 2012 - 2016, Victor Zverovich
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+```
+
 # [FreeType](http://www.freetype.org/)
 
 ```

src/app/CMakeLists.txt

@@ -554,7 +554,8 @@ target_link_libraries(app-lib
   ${FREETYPE_LIBRARIES}
   ${HARFBUZZ_LIBRARIES}
   json11
-  archive_static)
+  archive_static
+  fmt)
 
 if(ENABLE_SCRIPTING)
   target_link_libraries(app-lib script-lib)

src/app/i18n/strings.h

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2016  David Capello
+// Copyright (C) 2016-2017  David Capello
 //
 // This program is distributed under the terms of
 // the End-User License Agreement for Aseprite.
@@ -29,8 +29,6 @@ namespace app {
     std::unordered_map<std::string, std::string> m_strings;
   };
 
-  #define tr(id) (Strings::instance()->translate(id))
-
 } // namespace app
 
 #endif

src/app/ui/home_view.cpp

@@ -24,6 +24,7 @@
 #include "app/ui_context.h"
 #include "base/bind.h"
 #include "base/exception.h"
+#include "fmt/format.h"
 #include "ui/label.h"
 #include "ui/resize_event.h"
 #include "ui/system.h"
@@ -143,15 +144,16 @@ void HomeView::onCheckingUpdates()
 
 void HomeView::onUpToDate()
 {
-  checkUpdate()->setText(PACKAGE " is up to date");
+  checkUpdate()->setText(fmt::format("{0} is up to date", PACKAGE));
   checkUpdate()->setVisible(true);
 
   layout();
 }
 
 void HomeView::onNewUpdate(const std::string& url, const std::string& version)
 {
-  checkUpdate()->setText("New " PACKAGE " v" + version + " available!");
+  checkUpdate()->setText(fmt::format("New {0} v{1} available!",
+                                       PACKAGE, version));
   checkUpdate()->setUrl(url);
   checkUpdate()->setVisible(true);
   checkUpdate()->InitTheme.connect(

third_party/CMakeLists.txt

@@ -88,6 +88,7 @@ endif()
 
 add_subdirectory(harfbuzz-cmake)
 add_subdirectory(simpleini)
+add_subdirectory(fmt)
 
 # Add cmark without tests
 if(NOT USE_SHARED_CMARK)