/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
*/
+
#include "file_log.h"
#include "cross.h"
#include "config.h"
#include <cstdio>
#include <iostream>
+#include <cerrno>
+
using std::cout;
using std::string;
using std::max;
-using boost::shared_ptr;
+using std::shared_ptr;
+
/** @param file Filename to write log to */
FileLog::FileLog (boost::filesystem::path file)
set_types (Config::instance()->log_types());
}
+
+FileLog::FileLog (boost::filesystem::path file, int types)
+ : _file (file)
+{
+ set_types (types);
+}
+
+
void
FileLog::do_log (shared_ptr<const LogEntry> entry)
{
- FILE* f = fopen_boost (_file, "a");
+ auto f = fopen_boost (_file, "a");
if (!f) {
- cout << "(could not log to " << _file.string() << "): " << entry.get() << "\n";
+ cout << "(could not log to " << _file.string() << " error " << errno << "): " << entry->get() << "\n";
return;
}
- fprintf (f, "%s\n", entry->get().c_str ());
+ fprintf (f, "%s\n", entry->get().c_str());
fclose (f);
}
+
string
FileLog::head_and_tail (int amount) const
{
uintmax_t head_amount = amount;
uintmax_t tail_amount = amount;
- uintmax_t size = boost::filesystem::file_size (_file);
+ boost::system::error_code ec;
+ uintmax_t size = boost::filesystem::file_size (_file, ec);
+ if (size == static_cast<uintmax_t>(-1)) {
+ return "";
+ }
if (size < (head_amount + tail_amount)) {
head_amount = size;
tail_amount = 0;
}
- FILE* f = fopen_boost (_file, "r");
+ auto f = fopen_boost (_file, "r");
if (!f) {
return "";
}
string out;
- char* buffer = new char[max(head_amount, tail_amount) + 1];
+ std::vector<char> buffer(max(head_amount, tail_amount) + 1);
- int N = fread (buffer, 1, head_amount, f);
+ int N = fread (buffer.data(), 1, head_amount, f);
buffer[N] = '\0';
- out += string (buffer);
+ out += string (buffer.data());
if (tail_amount > 0) {
out += "\n .\n .\n .\n";
fseek (f, - tail_amount - 1, SEEK_END);
- N = fread (buffer, 1, tail_amount, f);
+ N = fread (buffer.data(), 1, tail_amount, f);
buffer[N] = '\0';
- out += string (buffer) + "\n";
+ out += string (buffer.data()) + "\n";
}
- delete[] buffer;
fclose (f);
return out;