+
+string
+error_details(boost::system::error_code ec)
+{
+ return String::compose("%1:%2:%3", ec.category().name(), ec.value(), ec.message());
+}
+
+
+bool
+contains_assetmap(boost::filesystem::path dir)
+{
+ return boost::filesystem::is_regular_file(dir / "ASSETMAP") || boost::filesystem::is_regular_file(dir / "ASSETMAP.xml");
+}
+
+
+string
+word_wrap(string input, int columns)
+{
+ icu::Locale locale;
+ UErrorCode status = U_ZERO_ERROR;
+ auto iter = icu::BreakIterator::createLineInstance(locale, status);
+ ScopeGuard sg = [iter]() { delete iter; };
+ if (U_FAILURE(status)) {
+ return input;
+ }
+
+ auto input_icu = icu::UnicodeString::fromUTF8(icu::StringPiece(input));
+ iter->setText(input_icu);
+
+ int position = 0;
+ string output;
+ while (position < input_icu.length()) {
+ int end_of_line = iter->preceding(position + columns + 1);
+ icu::UnicodeString line;
+ if (end_of_line <= position) {
+ /* There's no good line-break position; just break in the middle of a word */
+ line = input_icu.tempSubString(position, columns);
+ position += columns;
+ } else {
+ line = input_icu.tempSubString(position, end_of_line - position);
+ position = end_of_line;
+ }
+ line.toUTF8String(output);
+ output += "\n";
+ }
+
+ return output;
+}
+