dataset_charset.cpp

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// BSD 3-Clause License
// Copyright (c) 2021-2025, 🍀☀🌕🌥 🌊
// See the LICENSE file in the project root for full license information.
 
#include "kcenon/pacs/encoding/dataset_charset.h"
 
#include <kcenon/pacs/core/dicom_tag_constants.h>
 
namespace kcenon::pacs::encoding {
 
std::string get_decoded_string(
    const core::dicom_dataset& ds,
    core::dicom_tag tag,
    std::string_view default_value) {
 
    const auto* elem = ds.get(tag);
    if (elem == nullptr) {
        return std::string{default_value};
    }
 
    auto raw = elem->as_string();
    if (!raw.is_ok()) {
        return std::string{default_value};
    }
 
    // Look up Specific Character Set (0008,0005)
    auto scs_value = ds.get_string(core::tags::specific_character_set);
    auto scs = parse_specific_character_set(scs_value);
 
    return decode_to_utf8(raw.value(), scs);
}
 
void set_encoded_string(
    core::dicom_dataset& ds,
    core::dicom_tag tag,
    vr_type vr,
    std::string_view utf8_value) {
 
    // Look up Specific Character Set (0008,0005)
    auto scs_value = ds.get_string(core::tags::specific_character_set);
    auto scs = parse_specific_character_set(scs_value);
 
    auto encoded = encode_from_utf8(utf8_value, scs);
    ds.insert(core::dicom_element::from_string(tag, vr, encoded));
}
 
}  // namespace kcenon::pacs::encoding