Repo created

libs/drape/fonts_tool/fonts_tool.cpp

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+#include "drape/glyph_manager.hpp"
+#include "drape/harfbuzz_shaping.hpp"
+
+#include "platform/platform.hpp"
+
+#include "base/string_utils.hpp"
+
+#include <fstream>
+#include <iostream>
+#include <numeric>  // std::accumulate
+
+void ItemizeLine(std::string & str, dp::GlyphManager & glyphManager)
+{
+  strings::Trim(str);
+  if (str.empty())
+    return;
+
+  auto const segments = harfbuzz_shaping::GetTextSegments(str);
+  for (auto const & run : segments.m_segments)
+  {
+    std::u16string_view sv{segments.m_text.data() + run.m_start, static_cast<size_t>(run.m_length)};
+    std::cout << DebugPrint(sv) << '|';
+  }
+  std::cout << '\n';
+}
+
+int main(int argc, char ** argv)
+{
+  if (argc < 2)
+  {
+    std::cout << "Debugging tool to experiment with text segmentation\n";
+    std::cout << "Usage: " << argv[0] << " [text file with utf8 strings or any arbitrary text string]\n";
+    return -1;
+  }
+
+  dp::GlyphManager::Params params;
+  params.m_uniBlocks = "unicode_blocks.txt";
+  params.m_whitelist = "fonts_whitelist.txt";
+  params.m_blacklist = "fonts_blacklist.txt";
+  GetPlatform().GetFontNames(params.m_fonts);
+
+  dp::GlyphManager glyphManager(params);
+
+  if (Platform::IsFileExistsByFullPath(argv[1]))
+  {
+    std::ifstream file(argv[1]);
+    std::string line;
+    while (file.good())
+    {
+      std::getline(file, line);
+      ItemizeLine(line, glyphManager);
+    }
+  }
+  else
+  {
+    // Get all args as one string.
+    std::vector<std::string> const args(argv + 1, argv + argc);
+    auto line = std::accumulate(args.begin(), args.end(), std::string{});
+    ItemizeLine(line, glyphManager);
+  }
+  return 0;
+}