#include "image_io/jpeg/jpeg_xmp_info_builder.h"
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#include <string>
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namespace photos_editing_formats {
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namespace image_io {
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void JpegXmpInfoBuilder::ProcessSegment(const JpegSegment& segment) {
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// If the property has not yet been found, look for it, and if found, add the
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// segment's range to the vector of ranges.
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size_t extended_xmp_data_begin =
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segment.GetPayloadDataLocation() + kXmpExtendedHeaderSize;
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size_t property_value_begin = extended_xmp_data_begin;
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if (property_segment_ranges_.empty()) {
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std::string property_name =
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JpegXmpInfo::GetDataPropertyName(xmp_info_type_);
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property_value_begin = segment.FindXmpPropertyValueBegin(
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extended_xmp_data_begin, property_name.c_str());
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if (property_value_begin != segment.GetEnd()) {
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property_segment_ranges_.push_back(segment.GetDataRange());
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}
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} else if (!property_end_segment_range_.IsValid()) {
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// The start of the property value was encountered in a previous segment -
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// if the closing quote has not yet been found, then add the segment's range
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// to the vector or ranges.
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property_segment_ranges_.push_back(segment.GetDataRange());
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}
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// If the start of the property value has been found but the end has not, look
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// for the end in this segment.
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if (!property_segment_ranges_.empty() &&
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!property_end_segment_range_.IsValid()) {
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size_t property_value_end =
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segment.FindXmpPropertyValueEnd(property_value_begin);
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if (property_value_end != segment.GetEnd()) {
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property_end_segment_range_ = segment.GetDataRange();
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}
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}
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}
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} // namespace image_io
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} // namespace photos_editing_formats
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