StringUtil: Add Ellipsise()

src/common-tests/CMakeLists.txt

@@ -3,6 +3,7 @@ add_executable(common-tests
   file_system_tests.cpp
   path_tests.cpp
   rectangle_tests.cpp
+  string_tests.cpp
 )
 
 target_link_libraries(common-tests PRIVATE common gtest gtest_main)

src/common-tests/common-tests.vcxproj

@@ -7,6 +7,7 @@
     <ClCompile Include="file_system_tests.cpp" />
     <ClCompile Include="path_tests.cpp" />
     <ClCompile Include="rectangle_tests.cpp" />
+    <ClCompile Include="string_tests.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\dep\googletest\googletest.vcxproj">

src/common-tests/common-tests.vcxproj.filters

@@ -6,5 +6,6 @@
     <ClCompile Include="bitutils_tests.cpp" />
     <ClCompile Include="file_system_tests.cpp" />
     <ClCompile Include="path_tests.cpp" />
+    <ClCompile Include="string_tests.cpp" />
   </ItemGroup>
 </Project>

src/common-tests/string_tests.cpp

@@ -0,0 +1,34 @@
+// SPDX-FileCopyrightText: 2019-2023 Connor McLaughlin <stenzek@gmail.com>
+// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
+
+#include "common/string_util.h"
+#include <gtest/gtest.h>
+
+TEST(StringUtil, Ellipsise)
+{
+  ASSERT_EQ(StringUtil::Ellipsise("HelloWorld", 6, "..."), "Hel...");
+  ASSERT_EQ(StringUtil::Ellipsise("HelloWorld", 7, ".."), "Hello..");
+  ASSERT_EQ(StringUtil::Ellipsise("HelloWorld", 20, ".."), "HelloWorld");
+  ASSERT_EQ(StringUtil::Ellipsise("", 20, "..."), "");
+  ASSERT_EQ(StringUtil::Ellipsise("Hello", 10, "..."), "Hello");
+}
+
+TEST(StringUtil, EllipsiseInPlace)
+{
+  std::string s;
+  s = "HelloWorld";
+  StringUtil::EllipsiseInPlace(s, 6, "...");
+  ASSERT_EQ(s, "Hel...");
+  s = "HelloWorld";
+  StringUtil::EllipsiseInPlace(s, 7, "..");
+  ASSERT_EQ(s, "Hello..");
+  s = "HelloWorld";
+  StringUtil::EllipsiseInPlace(s, 20, "..");
+  ASSERT_EQ(s, "HelloWorld");
+  s = "";
+  StringUtil::EllipsiseInPlace(s, 20, "...");
+  ASSERT_EQ(s, "");
+  s = "Hello";
+  StringUtil::EllipsiseInPlace(s, 10, "...");
+  ASSERT_EQ(s, "Hello");
+}