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Code Issues Releases Wiki Activity

ircd::conf: Use stringops replace; minor reorg/rename.

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This commit is contained in:
Jason Volk 2021-12-19 14:25:44 -08:00
parent cb8362ba51
commit c74cfd8088
1 changed files with 19 additions and 12 deletions
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31
ircd/conf.cc
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@ -343,8 +343,9 @@ const
namespace ircd::conf
{
static void call_env(item<void> &) noexcept;
static void call_init(item<void> &) noexcept;
static string_view make_env_name(const mutable_buffer &, const item<void> &);
static void set_from_env(item<void> &) noexcept;
static void set_from_closure(item<void> &) noexcept;
}
void
@ -353,16 +354,16 @@ ircd::conf::item<void>::call_init()
// The conf item's default value specified by the constructor is its
// current value at this point; now we make callbacks to allow that value
// to be replaced with a better one (i.e reading a saved value from DB).
conf::call_init(*this);
conf::set_from_closure(*this);
// Environmental variables now get the final say; this allows any
// misconfiguration to be overridden by env vars. The variable name is
// the conf item name with any '.' replaced to '_', case is preserved.
conf::call_env(*this);
conf::set_from_env(*this);
}
void
ircd::conf::call_init(item<void> &item)
ircd::conf::set_from_closure(item<void> &item)
noexcept try
{
on_init(item);
@ -378,20 +379,18 @@ catch(const std::exception &e)
}
void
ircd::conf::call_env(item<void> &item)
ircd::conf::set_from_env(item<void> &item)
noexcept try
{
assert(size(item.name) <= conf::NAME_MAX_LEN);
thread_local char key[conf::NAME_MAX_LEN];
const string_view name
thread_local char buf[conf::NAME_MAX_LEN];
const string_view key
{
key,
std::replace_copy(begin(item.name), end(item.name), key, '.', '_')
make_env_name(buf, item)
};
const string_view val
{
util::getenv(name)
util::getenv(key)
};
if(!empty(val))
@ -407,6 +406,14 @@ catch(const std::exception &e)
};
}
ircd::string_view
ircd::conf::make_env_name(const mutable_buffer &buf,
const item<void> &item)
{
assert(size(item.name) <= conf::NAME_MAX_LEN);
return replace(buf, item.name, '.', '_');
}
//
// Non-inline template specialization definitions
//