1// Copyright 2012 The Kyua Authors.
2// All rights reserved.
3//
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16//
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28
29#include "utils/config/tree.ipp"
30
31#include "utils/config/exceptions.hpp"
32#include "utils/format/macros.hpp"
33#include "utils/text/operations.hpp"
34
35namespace config = utils::config;
36namespace text = utils::text;
37
38
39/// Converts a key to its textual representation.
40///
41/// \param key The key to convert.
42///
43/// \return a flattened representation of \p key, "."-joined.
44std::string
45utils::config::detail::flatten_key(const tree_key& key)
46{
47    PRE(!key.empty());
48    return text::join(key, ".");
49}
50
51
52/// Parses and validates a textual key.
53///
54/// \param str The key to process in dotted notation.
55///
56/// \return The tokenized key if valid.
57///
58/// \throw invalid_key_error If the input key is empty or invalid for any other
59///     reason.  Invalid does NOT mean unknown though.
60utils::config::detail::tree_key
61utils::config::detail::parse_key(const std::string& str)
62{
63    const tree_key key = text::split(str, '.');
64    if (key.empty())
65        throw invalid_key_error("Empty key");
66    for (tree_key::const_iterator iter = key.begin(); iter != key.end(); iter++)
67        if ((*iter).empty())
68            throw invalid_key_error(F("Empty component in key '%s'") % str);
69    return key;
70}
71