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/* -*- c++ -*- */
/*
* Copyright 2003,2010,2011,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "vmcircbuf.h"
#include "vmcircbuf_prefs.h"
#include <gnuradio/sys_paths.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <boost/format.hpp>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <filesystem>
namespace fs = std::filesystem;
namespace gr {
/*
* The simplest thing that could possibly work:
* the key is the filename; the value is the file contents.
*/
static std::string pathname(const char* key)
{
static fs::path path;
path = fs::path(gr::appdata_path()) / ".gnuradio" / "prefs" / key;
return path.string();
}
static void ensure_dir_path()
{
fs::path path = fs::path(gr::appdata_path()) / ".gnuradio";
if (!fs::is_directory(path))
fs::create_directory(path);
path = path / "prefs";
if (!fs::is_directory(path))
fs::create_directory(path);
}
int vmcircbuf_prefs::get(const char* key, char* value, int value_size)
{
gr::thread::scoped_lock guard(s_vm_mutex);
FILE* fp = fopen(pathname(key).c_str(), "r");
gr::logger_ptr logger, debug_logger;
gr::configure_default_loggers(logger, debug_logger, "vmcircbuf_prefs::get");
if (fp == 0) {
GR_LOG_ERROR(logger,
boost::format("%s: %s") % pathname(key).c_str() % strerror(errno));
return 0;
}
const size_t ret = fread(value, 1, value_size - 1, fp);
value[ret] = '\0';
if (ret == 0 && !feof(fp)) {
if (ferror(fp) != 0) {
GR_LOG_ERROR(logger,
boost::format("%s: %s") % pathname(key).c_str() %
strerror(errno));
fclose(fp);
return -1;
}
}
fclose(fp);
return ret;
}
void vmcircbuf_prefs::set(const char* key, const char* value)
{
gr::thread::scoped_lock guard(s_vm_mutex);
ensure_dir_path();
gr::logger_ptr logger, debug_logger;
gr::configure_default_loggers(logger, debug_logger, "vmcircbuf_prefs::set");
FILE* fp = fopen(pathname(key).c_str(), "w");
if (fp == 0) {
GR_LOG_ERROR(logger,
boost::format("%s: %s") % pathname(key).c_str() % strerror(errno));
return;
}
size_t ret = fwrite(value, 1, strlen(value), fp);
if (ret == 0) {
if (ferror(fp) != 0) {
GR_LOG_ERROR(logger,
boost::format("%s: %s") % pathname(key).c_str() %
strerror(errno));
fclose(fp);
return;
}
}
fclose(fp);
};
} /* namespace gr */
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