zeek/src/module_util.cc

116 lines
2.8 KiB
C++

//
// See the file "COPYING" in the main distribution directory for copyright.
#include "zeek/module_util.h"
#include <cstring>
#include <iostream>
#include <string>
#include "zeek/3rdparty/doctest.h"
using namespace std;
namespace zeek::detail
{
static bool streq(const char* s1, const char* s2)
{
return strcmp(s1, s2) == 0;
}
TEST_CASE("module_util streq")
{
CHECK(streq("abcd", "abcd") == true);
CHECK(streq("abcd", "efgh") == false);
}
TEST_CASE("module_util extract_module_name")
{
CHECK(extract_module_name("mod") == GLOBAL_MODULE_NAME);
CHECK(extract_module_name("mod::") == "mod");
CHECK(extract_module_name("mod::var") == "mod");
}
// Returns it without trailing "::" var section.
string extract_module_name(const char* name)
{
string module_name = name;
string::size_type pos = module_name.rfind("::");
if ( pos == string::npos )
return string(GLOBAL_MODULE_NAME);
module_name.erase(pos);
return module_name;
}
TEST_CASE("module_util extract_var_name")
{
CHECK(extract_var_name("mod") == "mod");
CHECK(extract_var_name("mod::") == "");
CHECK(extract_var_name("mod::var") == "var");
CHECK(extract_var_name("::var") == "var");
}
string extract_var_name(const char* name)
{
string var_name = name;
string::size_type pos = var_name.rfind("::");
if ( pos == string::npos )
return var_name;
if ( pos + 2 > var_name.size() )
return string("");
return var_name.substr(pos + 2);
}
TEST_CASE("module_util normalized_module_name")
{
CHECK(normalized_module_name("a") == "a");
CHECK(normalized_module_name("module") == "module");
CHECK(normalized_module_name("module::") == "module");
}
string normalized_module_name(const char* module_name)
{
int mod_len;
if ( (mod_len = strlen(module_name)) >= 2 && streq(module_name + mod_len - 2, "::") )
mod_len -= 2;
return string(module_name, mod_len);
}
TEST_CASE("module_util make_full_var_name")
{
CHECK(make_full_var_name(nullptr, "GLOBAL::var") == "var");
CHECK(make_full_var_name(GLOBAL_MODULE_NAME, "var") == "var");
CHECK(make_full_var_name(nullptr, "notglobal::var") == "notglobal::var");
CHECK(make_full_var_name(nullptr, "::var") == "::var");
CHECK(make_full_var_name("module", "var") == "module::var");
CHECK(make_full_var_name("module::", "var") == "module::var");
CHECK(make_full_var_name("", "var") == "::var");
}
string make_full_var_name(const char* module_name, const char* var_name)
{
if ( ! module_name || streq(module_name, GLOBAL_MODULE_NAME) || strstr(var_name, "::") )
{
if ( streq(GLOBAL_MODULE_NAME, extract_module_name(var_name).c_str()) )
return extract_var_name(var_name);
return string(var_name);
}
string full_name = normalized_module_name(module_name);
full_name += "::";
full_name += var_name;
return full_name;
}
} // namespace zeek::detail