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conky/src/display-file.cc
François Revol 7cf80d5948 Work around linker missing objects when building tests
Since we rely on a global object ctor to add a display output to the
list, it is not referenced from anywhere else, so does not get linked in
when building tests since most objects are pulled from a static library.

Another option would be to use --whole-archive to link to it.
2022-09-10 20:39:11 +02:00

107 lines
3.3 KiB
C++

/*
*
* Conky, a system monitor, based on torsmo
*
* Please see COPYING for details
*
* Copyright (C) 2018 François Revol et al.
* Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
* Copyright (c) 2005-2021 Brenden Matthews, Philip Kovacs, et. al.
* (see AUTHORS)
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <config.h>
#include "conky.h"
#include "display-file.hh"
#include "nc.h"
#include <iostream>
#include <sstream>
#include <unordered_map>
/* filenames for output */
static conky::simple_config_setting<std::string> overwrite_file(
"overwrite_file", std::string(), true);
static FILE *overwrite_fpointer = nullptr;
static conky::simple_config_setting<std::string> append_file("append_file",
std::string(),
true);
static FILE *append_fpointer = nullptr;
namespace conky {
namespace {
conky::display_output_file file_output("file");
} // namespace
extern void init_file_output() {}
namespace priv {} // namespace priv
display_output_file::display_output_file(const std::string &name_)
: display_output_base(name_) {
// lowest priority, it's a fallback
priority = 0;
}
bool display_output_file::detect() {
if (static_cast<unsigned int>(!overwrite_file.get(*state).empty()) != 0u ||
static_cast<unsigned int>(!append_file.get(*state).empty()) != 0u) {
DBGP2("Display output '%s' enabled in config.", name.c_str());
return true;
}
return false;
}
bool display_output_file::initialize() { return true; }
bool display_output_file::shutdown() { return true; }
void display_output_file::draw_string(const char *s, int) {
if (overwrite_fpointer != nullptr) { fprintf(overwrite_fpointer, "%s\n", s); }
if (append_fpointer != nullptr) { fprintf(append_fpointer, "%s\n", s); }
}
void display_output_file::begin_draw_stuff() {
if (static_cast<unsigned int>(!overwrite_file.get(*state).empty()) != 0u) {
overwrite_fpointer = fopen(overwrite_file.get(*state).c_str(), "we");
if (overwrite_fpointer == nullptr) {
NORM_ERR("Cannot overwrite '%s'", overwrite_file.get(*state).c_str());
}
}
if (static_cast<unsigned int>(!append_file.get(*state).empty()) != 0u) {
append_fpointer = fopen(append_file.get(*state).c_str(), "ae");
if (append_fpointer == nullptr) {
NORM_ERR("Cannot append to '%s'", append_file.get(*state).c_str());
}
}
}
void display_output_file::end_draw_stuff() {
if (overwrite_fpointer != nullptr) {
fclose(overwrite_fpointer);
overwrite_fpointer = nullptr;
}
if (append_fpointer != nullptr) {
fclose(append_fpointer);
append_fpointer = nullptr;
}
}
} // namespace conky