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// file : butl/string-parser -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BUTL_STRING_PARSER
#define BUTL_STRING_PARSER
#include <string>
#include <vector>
#include <cstddef> // size_t
#include <utility> // pair
#include <stdexcept> // invalid_argument
#include <butl/export>
namespace butl
{
class LIBBUTL_EXPORT invalid_string: public std::invalid_argument
{
public:
invalid_string (std::size_t p, const std::string& d)
: invalid_argument (d), position (p) {}
std::size_t position; // Zero-based.
};
class LIBBUTL_EXPORT string_parser
{
public:
// Parse a whitespace-separated list of strings. Can contain single or
// double quoted substrings. No escaping is supported. If unquote is true,
// return one-level unquoted values. Throw invalid_string in case of
// invalid quoting.
//
static std::vector<std::string>
parse_quoted (const std::string&, bool unquote);
// As above but return a list of string and zero-based position pairs.
// Position is useful for issuing diagnostics about an invalid string
// during second-level parsing.
//
static std::vector<std::pair<std::string, std::size_t>>
parse_quoted_position (const std::string&, bool unquote);
// Remove a single level of quotes. Note that the format or the
// correctness of the quotation is not validated.
//
static std::string
unquote (const std::string&);
static std::vector<std::string>
unquote (const std::vector<std::string>&);
};
}
#endif // BUTL_STRING_PARSER
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