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Support for text-transform

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This is 1-1 locale-unaware text transform using std::ctype.
If we want a transform that cares for things like ß -> SS,
we need to switch to boost::locale.
This commit is contained in:
John Firebaugh
2014-07-03 13:59:41 -07:00
parent 40404659dc
commit c52b2ba7a8
4 changed files with 27 additions and 2 deletions
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14
src/map/tile_parser.cpp
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@@ -19,6 +19,8 @@
#include <llmr/util/std.hpp>
#include <llmr/util/utf.hpp>
#include <locale>
#ifdef __linux__
#include <boost/regex.hpp>
namespace regex_impl = boost;
@@ -208,8 +210,16 @@ std::unique_ptr<Bucket> TileParser::createTextBucket(const VectorTileLayer& laye
return nullptr;
VectorTileFeature feature{feature_pbf, layer};
const std::u32string string = ucs4conv.convert(
util::replaceTokens(properties.field, feature.properties));
std::string u8string = util::replaceTokens(properties.field, feature.properties);
auto& convert = std::use_facet<std::ctype<char>>(std::locale());
if (properties.transform == TextTransformType::Uppercase) {
convert.toupper(&u8string[0], &u8string[0] + u8string.size());
} else if (properties.transform == TextTransformType::Lowercase) {
convert.tolower(&u8string[0], &u8string[0] + u8string.size());
}
std::u32string string = ucs4conv.convert(u8string);
// Loop through all characters of this text and collect unique codepoints.
for (char32_t chr : string) {