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Support UTF8 to UTF16 LE

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This commit is contained in:
Tuan Nghia Nguyen
2026-03-31 14:10:21 +11:00
parent 0c24096c80
commit 70be68d0fc
14 changed files with 790 additions and 11 deletions
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30
modules/ANSLPR/ANSLPR.cpp
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@@ -408,6 +408,32 @@ namespace ANSCENTER {
return result;
}
static std::string DoubleEscapeUnicode(const std::string& utf8Str) {
bool hasNonAscii = false;
for (unsigned char c : utf8Str) {
if (c >= 0x80) { hasNonAscii = true; break; }
}
if (!hasNonAscii) return utf8Str;
std::string result;
result.reserve(utf8Str.size() * 2);
size_t i = 0;
while (i < utf8Str.size()) {
unsigned char c = static_cast<unsigned char>(utf8Str[i]);
if (c < 0x80) { result += utf8Str[i++]; continue; }
uint32_t cp = 0;
if ((c & 0xE0) == 0xC0 && i + 1 < utf8Str.size()) {
cp = ((c & 0x1F) << 6) | (static_cast<unsigned char>(utf8Str[i + 1]) & 0x3F); i += 2;
} else if ((c & 0xF0) == 0xE0 && i + 2 < utf8Str.size()) {
cp = ((c & 0x0F) << 12) | ((static_cast<unsigned char>(utf8Str[i + 1]) & 0x3F) << 6) | (static_cast<unsigned char>(utf8Str[i + 2]) & 0x3F); i += 3;
} else if ((c & 0xF8) == 0xF0 && i + 3 < utf8Str.size()) {
cp = ((c & 0x07) << 18) | ((static_cast<unsigned char>(utf8Str[i + 1]) & 0x3F) << 12) | ((static_cast<unsigned char>(utf8Str[i + 2]) & 0x3F) << 6) | (static_cast<unsigned char>(utf8Str[i + 3]) & 0x3F); i += 4;
} else { i++; continue; }
if (cp <= 0xFFFF) { char buf[8]; snprintf(buf, sizeof(buf), "\\u%04x", cp); result += buf; }
else { cp -= 0x10000; char buf[16]; snprintf(buf, sizeof(buf), "\\u%04x\\u%04x", 0xD800 + (uint16_t)(cp >> 10), 0xDC00 + (uint16_t)(cp & 0x3FF)); result += buf; }
}
return result;
}
std::string ANSALPR::VectorDetectionToJsonString(const std::vector<Object>& dets) {
if (dets.empty()) {
return R"({"results":[]})";
@@ -421,13 +447,13 @@ namespace ANSCENTER {
{"class_id", std::to_string(det.classId)},
//{"track_id", std::to_string(det.trackId)},
{"track_id", std::to_string(0)},
{"class_name", det.className},
{"class_name", DoubleEscapeUnicode(det.className)},
{"prob", std::to_string(det.confidence)},
{"x", std::to_string(det.box.x)},
{"y", std::to_string(det.box.y)},
{"width", std::to_string(det.box.width)},
{"height", std::to_string(det.box.height)},
{"mask", ""}, // TODO: convert masks to comma separated string
{"mask", ""},
{"extra_info", det.extraInfo},
{"camera_id", det.cameraId},
{"polygon", PolygonToString(det.polygon)},