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///////////////////////////////////////////////////////////////////////////////
//
/// \file message.h
/// \brief Printing messages to stderr
//
// Copyright (C) 2007-2008 Lasse Collin
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 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
// Lesser General Public License for more details.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef MESSAGE_H
#define MESSAGE_H
/// Verbosity levels
enum message_verbosity {
V_SILENT, ///< No messages
V_ERROR, ///< Only error messages
V_WARNING, ///< Errors and warnings
V_VERBOSE, ///< Errors, warnings, and verbose statistics
V_DEBUG, ///< Debugging, FIXME remove?
};
/// \brief Initializes the message functions
///
/// \param argv0 Name of the program i.e. argv[0] from main()
/// \param verbosity Verbosity level
///
/// If an error occurs, this function doesn't return.
///
extern void message_init(const char *argv0);
/// Increase verbosity level by one step unless it was at maximum.
extern void message_verbosity_increase(void);
/// Decrease verbosity level by one step unless it was at minimum.
extern void message_verbosity_decrease(void);
/// Set the total number of files to be processed (stdin is counted as a file
/// here). The default is one.
extern void message_set_files(unsigned int files);
/// \brief Print a message if verbosity level is at least "verbosity"
///
/// This doesn't touch the exit status.
extern void message(enum message_verbosity verbosity, const char *fmt, ...)
lzma_attribute((format(printf, 2, 3)));
/// \brief Prints a warning and possibly sets exit status
///
/// The message is printed only if verbosity level is at least V_WARNING.
/// The exit status is set to WARNING unless it was already at ERROR.
extern void message_warning(const char *fmt, ...)
lzma_attribute((format(printf, 1, 2)));
/// \brief Prints an error message and sets exit status
///
/// The message is printed only if verbosity level is at least V_ERROR.
/// The exit status is set to ERROR.
extern void message_error(const char *fmt, ...)
lzma_attribute((format(printf, 1, 2)));
/// \brief Prints an error message and exits with EXIT_ERROR
///
/// The message is printed only if verbosity level is at least V_ERROR.
extern void message_fatal(const char *fmt, ...)
lzma_attribute((format(printf, 1, 2)))
lzma_attribute((noreturn));
/// Print an error message that an internal error occurred and exit with
/// EXIT_ERROR.
extern void message_bug(void) lzma_attribute((noreturn));
/// Print a message that establishing signal handlers failed, and exit with
/// exit status ERROR.
extern void message_signal_handler(void) lzma_attribute((noreturn));
/// Converts lzma_ret to a string.
extern const char *message_strm(lzma_ret code);
/// Print a message that user should try --help.
extern void message_try_help(void);
/// Prints the version number to stdout and exits with exit status SUCCESS.
extern void message_version(void) lzma_attribute((noreturn));
/// Print the help message.
extern void message_help(bool long_help) lzma_attribute((noreturn));
///
extern void message_progress_start(const char *filename, uint64_t in_size);
///
extern void message_progress_update(uint64_t in_pos, uint64_t out_pos);
/// \brief Finishes the progress message if we were in verbose mode
///
/// \param in_pos Final input position i.e. how much input there was.
/// \param out_pos Final output position
/// \param success True if the operation was successful. We don't
/// print the final progress message if the operation
/// wasn't successful.
///
extern void message_progress_end(
uint64_t in_pos, uint64_t out_pos, bool success);
#endif
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