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#include "hook_manager.hh"
#include "buffer_utils.hh"
#include "clock.hh"
#include "command_manager.hh"
#include "context.hh"
#include "display_buffer.hh"
#include "face_registry.hh"
#include "option.hh"
#include "option_types.hh"
#include "ranges.hh"
#include "regex.hh"
namespace Kakoune
{
struct HookManager::Hook
{
String group;
HookFlags flags;
Regex filter;
String commands;
};
HookManager::HookManager() : m_parent(nullptr) {}
HookManager::HookManager(HookManager& parent) : SafeCountable{}, m_parent(&parent) {}
HookManager::~HookManager() = default;
void HookManager::add_hook(StringView hook_name, String group, HookFlags flags, Regex filter, String commands)
{
auto& hooks = m_hooks[hook_name];
hooks.emplace_back(new Hook{std::move(group), flags, std::move(filter), std::move(commands)});
}
void HookManager::remove_hooks(StringView group)
{
if (group.empty())
throw runtime_error("invalid id");
for (auto& list : m_hooks)
{
auto it = std::remove_if(list.value.begin(), list.value.end(),
[&](const std::unique_ptr<Hook>& h)
{ return h->group == group; });
if (not m_running_hooks.empty()) // we are running some hooks, defer deletion
m_hooks_trash.insert(m_hooks_trash.end(), std::make_move_iterator(it),
std::make_move_iterator(list.value.end()));
list.value.erase(it, list.value.end());
}
}
CandidateList HookManager::complete_hook_group(StringView prefix, ByteCount pos_in_token)
{
CandidateList res;
for (auto& list : m_hooks)
{
auto container = list.value | transform([](const std::unique_ptr<Hook>& h) -> const String& { return h->group; });
for (auto& c : complete(prefix, pos_in_token, container))
{
if (!contains(res, c))
res.push_back(c);
}
}
return res;
}
void HookManager::run_hook(StringView hook_name, StringView param, Context& context) const
{
const bool only_always = context.hooks_disabled();
if (m_parent)
m_parent->run_hook(hook_name, param, context);
auto hook_list = m_hooks.find(hook_name);
if (hook_list == m_hooks.end())
return;
if (contains(m_running_hooks, std::make_pair(hook_name, param)))
{
auto error = format("recursive call of hook {}/{}, not executing", hook_name, param);
write_to_debug_buffer(error);
return;
}
m_running_hooks.emplace_back(hook_name, param);
auto pop_running_hook = on_scope_end([this]{
m_running_hooks.pop_back();
if (m_running_hooks.empty())
m_hooks_trash.clear();
});
const DebugFlags debug_flags = context.options()["debug"].get<DebugFlags>();
const bool profile = debug_flags & DebugFlags::Profile;
auto start_time = profile ? Clock::now() : TimePoint{};
auto& disabled_hooks = context.options()["disabled_hooks"].get<Regex>();
struct ToRun { Hook* hook; MatchResults<const char*> captures; };
Vector<ToRun> hooks_to_run; // The m_hooks_trash vector ensure hooks wont die during this method
for (auto& hook : hook_list->value)
{
MatchResults<const char*> captures;
if ((not only_always or (hook->flags & HookFlags::Always)) and
(hook->group.empty() or disabled_hooks.empty() or
not regex_match(hook->group.begin(), hook->group.end(), disabled_hooks))
and regex_match(param.begin(), param.end(), captures, hook->filter))
hooks_to_run.push_back({ hook.get(), std::move(captures) });
}
bool hook_error = false;
for (auto& to_run : hooks_to_run)
{
try
{
if (debug_flags & DebugFlags::Hooks)
write_to_debug_buffer(format("hook {}({})/{}", hook_name, param, to_run.hook->group));
ScopedSetBool disable_history{context.history_disabled()};
EnvVarMap env_vars{ {"hook_param", param.str()} };
for (size_t i = 0; i < to_run.captures.size(); ++i)
env_vars.insert({format("hook_param_capture_{}", i),
{to_run.captures[i].first, to_run.captures[i].second}});
CommandManager::instance().execute(to_run.hook->commands, context,
{ {}, std::move(env_vars) });
}
catch (runtime_error& err)
{
hook_error = true;
write_to_debug_buffer(format("error running hook {}({})/{}: {}",
hook_name, param, to_run.hook->group, err.what()));
}
}
if (hook_error)
context.print_status({
format("Error running hooks for '{}' '{}', see *debug* buffer",
hook_name, param), context.faces()["Error"] });
if (profile)
{
auto end_time = Clock::now();
auto full = std::chrono::duration_cast<std::chrono::microseconds>(end_time - start_time);
write_to_debug_buffer(format("hook '{}({})' took {} us", hook_name, param, (size_t)full.count()));
}
}
}
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