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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "weighted_set_parser.h"
#include <vespa/vespalib/util/issue.h>
using vespalib::Issue;
namespace search::features {
template <typename OutputType>
void
WeightedSetParser::parse(const vespalib::string &input, OutputType &output)
{
size_t len = input.size();
// Note that we still handle '(' and ')' for backward compatibility.
if (len >= 2 && ((input[0] == '{' && input[len - 1] == '}') ||
(input[0] == '(' && input[len - 1] == ')')) ) {
vespalib::stringref s(input.c_str()+1, len - 2);
while ( ! s.empty() ) {
vespalib::string::size_type commaPos(s.find(','));
vespalib::stringref item(s.substr(0, commaPos));
vespalib::string::size_type colonPos(item.find(':'));
if (colonPos != vespalib::string::npos) {
vespalib::string tmpKey(item.substr(0, colonPos));
vespalib::string::size_type start(tmpKey.find_first_not_of(' '));
vespalib::stringref key(tmpKey.data() + start, colonPos - start);
vespalib::stringref value(item.substr(colonPos+1));
output.insert(key, value);
} else {
Issue::report("weighted set parser: Could not parse item '%s' in input string '%s', skipping. "
"Expected ':' between key and weight.", vespalib::string(item).c_str(), input.c_str());
}
if (commaPos != vespalib::string::npos) {
s = s.substr(commaPos+1);
} else {
s = vespalib::stringref();
}
}
} else {
Issue::report("weighted set parser: Could not parse input string '%s'. "
"Expected surrounding '(' and ')' or '{' and '}'.", input.c_str());
}
}
}
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