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correctly detect loss of prefix/suffix

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This commit is contained in:
Moritz Kobitzsch
2016-09-02 15:49:25 +02:00
parent be266c7c2b
commit f7265892ed
3 changed files with 56 additions and 35 deletions
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include/extractor/guidance/toolkit.hpp
+41 -34
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@@ -205,43 +205,50 @@ inline bool requiresNameAnnounced(const std::string &from,
const auto name_is_contained =
boost::starts_with(from_name, to_name) || boost::starts_with(to_name, from_name);
const auto checkForPrefixOrSuffixChange =
[](const std::string &first, const std::string &second, const SuffixTable &suffix_table) {
const auto checkForPrefixOrSuffixChange = [](
const std::string &first, const std::string &second, const SuffixTable &suffix_table) {
const auto first_prefix_and_suffixes = getPrefixAndSuffix(first);
const auto second_prefix_and_suffixes = getPrefixAndSuffix(second);
// reverse strings, get suffices and reverse them to get prefixes
const auto checkTable = [&](const std::string str) {
return str.empty() || suffix_table.isSuffix(str);
};
const bool is_prefix_change = [&]() -> bool {
if (!checkTable(first_prefix_and_suffixes.first))
return false;
if (!checkTable(first_prefix_and_suffixes.first))
return false;
return !first.compare(first_prefix_and_suffixes.first.length(),
std::string::npos,
second,
second_prefix_and_suffixes.first.length(),
std::string::npos);
}();
const bool is_suffix_change = [&]() -> bool {
if (!checkTable(first_prefix_and_suffixes.second))
return false;
if (!checkTable(first_prefix_and_suffixes.second))
return false;
return !first.compare(0,
first.length() - first_prefix_and_suffixes.second.length(),
second,
0,
second.length() - second_prefix_and_suffixes.second.length());
}();
return is_prefix_change || is_suffix_change;
const auto first_prefix_and_suffixes = getPrefixAndSuffix(first);
const auto second_prefix_and_suffixes = getPrefixAndSuffix(second);
// reverse strings, get suffices and reverse them to get prefixes
const auto checkTable = [&](const std::string& str) {
return str.empty() || suffix_table.isSuffix(str);
};
const auto getOffset = [](const std::string &str) -> std::size_t {
if (str.empty())
return 0;
else
return str.length() + 1;
};
const bool is_prefix_change = [&]() -> bool {
if (!checkTable(first_prefix_and_suffixes.first))
return false;
if (!checkTable(second_prefix_and_suffixes.first))
return false;
return !first.compare(getOffset(first_prefix_and_suffixes.first),
std::string::npos,
second,
getOffset(second_prefix_and_suffixes.first),
std::string::npos);
}();
const bool is_suffix_change = [&]() -> bool {
if (!checkTable(first_prefix_and_suffixes.second))
return false;
if (!checkTable(second_prefix_and_suffixes.second))
return false;
return !first.compare(0,
first.length() - getOffset(first_prefix_and_suffixes.second),
second,
0,
second.length() - getOffset(second_prefix_and_suffixes.second));
}();
return is_prefix_change || is_suffix_change;
};
const auto is_suffix_change = checkForPrefixOrSuffixChange(from_name, to_name, suffix_table);
const auto names_are_equal = from_name == to_name || name_is_contained || is_suffix_change;
const auto name_is_removed = !from_name.empty() && to_name.empty();