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Add get_with_prefix()

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Returns a list of key-value pairs starting with a prefix.
If you have in config:
```
env-FOO = bar
env-CAT = dog
```

then `get_with_prefix("env-")` will return
`[{"FOO", "bar"}, {"CAT", "dog"}]`
This commit is contained in:
TheDoctor314 2021-09-28 21:31:40 +05:30 committed by Patrick Ziegler
parent 8afd5b71df
commit 1e0e50266b
1 changed files with 25 additions and 0 deletions
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25
include/components/config.hpp
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@ -111,6 +111,31 @@ class config {
} }
} }
/**
* Get list of key-value pairs starting with a prefix by section.
*
* Eg: if you have in config `env-FOO = bar`,
* get_with_prefix(section, "env-") will return [{"FOO", "bar"}]
*/
vector<pair<string, string>> get_with_prefix(const string& section, const string& key_prefix) const {
auto it = m_sections.find(section);
if (it == m_sections.end()) {
throw key_error("Missing section \"" + section + "\"");
}
vector<pair<string, string>> list;
for (const auto& kv_pair : it->second) {
const auto& key = kv_pair.first;
if (key.substr(0, key_prefix.size()) == key_prefix) {
const auto& val = kv_pair.second;
list.emplace_back(key.substr(key_prefix.size()), val);
}
}
return list;
}
/** /**
* Get list of values for the current bar by name * Get list of values for the current bar by name
*/ */