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First implementation of a comment skipper.

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This commit is contained in:
King_DuckZ 2017-11-11 00:10:01 +00:00
parent 0e478364ac
commit 0616f45743
2 changed files with 68 additions and 8 deletions
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44
src/kamokan_impl/ini_file.cpp
View file

@ -26,11 +26,13 @@
#include <boost/spirit/include/qi_kleene.hpp>
#include <boost/spirit/include/qi_rule.hpp>
#include <boost/spirit/include/qi_eol.hpp>
#include <boost/spirit/include/qi_eoi.hpp>
#include <boost/spirit/include/qi_grammar.hpp>
#include <boost/spirit/include/qi_hold.hpp>
#include <boost/spirit/include/qi_char_class.hpp>
#include <boost/spirit/include/qi_list.hpp>
#include <boost/spirit/include/qi_optional.hpp>
#include <boost/spirit/include/qi_eps.hpp>
#include <boost/spirit/include/phoenix_stl.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>
#include <boost/spirit/include/phoenix_bind.hpp>
@ -57,6 +59,31 @@ namespace kamokan {
Iterator m_begin;
};
template <typename Iterator>
struct IniCommentSkipper : boost::spirit::qi::grammar<Iterator> {
IniCommentSkipper() :
IniCommentSkipper::base_type(start),
first_char(true)
{
namespace px = boost::phoenix;
using boost::spirit::qi::blank;
using boost::spirit::qi::lit;
using boost::spirit::qi::eol;
using boost::spirit::qi::char_;
using boost::spirit::qi::eps;
start = skipping[px::ref(first_char) = false];
skipping = comment | blank;
comment = (eps(px::cref(first_char) == true) | eol) >>
*blank >> lit("#") >> *(char_ - eol);
}
boost::spirit::qi::rule<Iterator> start;
boost::spirit::qi::rule<Iterator> skipping;
boost::spirit::qi::rule<Iterator> comment;
bool first_char;
};
template <typename Iterator, typename Skipper>
IniGrammar<Iterator, Skipper>::IniGrammar (const std::string* parString) :
IniGrammar::base_type(start),
@ -68,6 +95,7 @@ namespace kamokan {
using boost::spirit::qi::_val;
using boost::spirit::_1;
using boost::spirit::qi::eol;
using boost::spirit::qi::eoi;
using boost::spirit::qi::raw;
using boost::string_view;
using boost::spirit::qi::hold;
@ -79,28 +107,28 @@ namespace kamokan {
[_val = px::bind(
&string_view::substr,
px::construct<string_view>(px::ref(*m_master_string)),
px::begin(_1) - px::ref(m_begin), px::size(_1)
px::begin(_1) - px::cref(m_begin), px::size(_1)
)] >> ']';
key = raw[(graph - '[' - '=') >> *(graph - '=') >> *(hold[+blank >> +(graph - '=')])][_val = px::bind(
&string_view::substr,
px::construct<string_view>(px::ref(*m_master_string)),
px::begin(_1) - px::ref(m_begin), px::size(_1)
px::begin(_1) - px::cref(m_begin), px::size(_1)
)];
key_value = key[px::bind(&refpair::first, _val) = _1] >> '=' >>
raw[*(graph - eol) >> *(hold[+blank >> +(graph - eol)])][px::bind(&refpair::second, _val) = px::bind(
raw[*(graph - eol) % +blank][px::bind(&refpair::second, _val) = px::bind(
&string_view::substr,
px::construct<string_view>(px::ref(*m_master_string)),
px::begin(_1) - px::ref(m_begin), px::size(_1)
px::begin(_1) - px::cref(m_begin), px::size(_1)
)];
key_values = -(key_value % (+eol));
start = *(*eol >> section >> +eol >> key_values >> *eol);
start = *eol >> *(section >> +eol >> key_values >> *eol);
}
IniFile::IniMapType parse_ini (const std::string* parIni, bool& parParseOk, int& parParsedCharCount) {
using boost::spirit::qi::blank;
using boost::spirit::qi::blank_type;
using skipper_type = IniCommentSkipper<std::string::const_iterator>;
IniGrammar<std::string::const_iterator, blank_type> gramm(parIni);
IniGrammar<std::string::const_iterator, skipper_type> gramm(parIni);
IniFile::IniMapType result;
parParseOk = false;
@ -112,7 +140,7 @@ namespace kamokan {
start_it,
parIni->cend(),
gramm,
blank,
skipper_type(),
result
);

32
test/unit/test_ini_file.cpp
View file

@ -97,3 +97,35 @@ TEST_CASE ("Test parsing an ini text", "[ini][parser]") {
//CHECK(ini.parsed_characters() == 27);
}
}
TEST_CASE ("Test parsing an ini with comments", "[ini][parser][comments]") {
using kamokan::IniFile;
std::string text(
"#leading comment\n"
"[section]\n"
"value = key\n"
"#this = shoul be ignored\n"
"\t#indented = comments should also be ignored\n"
"this = #should not be ignored #lol\n"
"#comment without newline"
);
const int text_len = static_cast<int>(text.size());
IniFile ini(std::move(text));
CHECK(ini.parse_success());
REQUIRE(ini.parsed_characters() == text_len);
const IniFile::IniMapType& parsed = ini.parsed();
CHECK(parsed.size() == 1);
REQUIRE_NOTHROW(parsed.at("section"));
const IniFile::KeyValueMapType& section = parsed.at("section");
REQUIRE(section.size() == 2);
REQUIRE_NOTHROW(section.at("value"));
REQUIRE_NOTHROW(section.at("this"));
CHECK_THROWS(section.at("#this"));
CHECK(section.at("value") == "key");
CHECK(section.at("this") == "#should not be ignored #lol");
}