1 ///////////////////////////////////////////////////////////////////////////////
4 /// \brief Printing messages to stderr
6 // Copyright (C) 2007-2008 Lasse Collin
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU Lesser General Public
10 // License as published by the Free Software Foundation; either
11 // version 2.1 of the License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // Lesser General Public License for more details.
18 ///////////////////////////////////////////////////////////////////////////////
21 enum message_verbosity {
22 V_SILENT, ///< No messages
23 V_ERROR, ///< Only error messages
24 V_WARNING, ///< Errors and warnings
25 V_VERBOSE, ///< Errors, warnings, and verbose statistics
26 V_DEBUG, ///< Debugging, FIXME remove?
30 /// \brief Initializes the message functions
32 /// \param argv0 Name of the program i.e. argv[0] from main()
33 /// \param verbosity Verbosity level
35 /// If an error occurs, this function doesn't return.
37 extern void message_init(const char *argv0);
40 /// Increase verbosity level by one step unless it was at maximum.
41 extern void message_verbosity_increase(void);
43 /// Decrease verbosity level by one step unless it was at minimum.
44 extern void message_verbosity_decrease(void);
47 /// Set the total number of files to be processed (stdin is counted as a file
48 /// here). The default is one.
49 extern void message_set_files(unsigned int files);
52 /// \brief Print a message if verbosity level is at least "verbosity"
54 /// This doesn't touch the exit status.
55 extern void message(enum message_verbosity verbosity, const char *fmt, ...)
56 lzma_attribute((format(printf, 2, 3)));
59 /// \brief Prints a warning and possibly sets exit status
61 /// The message is printed only if verbosity level is at least V_WARNING.
62 /// The exit status is set to WARNING unless it was already at ERROR.
63 extern void message_warning(const char *fmt, ...)
64 lzma_attribute((format(printf, 1, 2)));
67 /// \brief Prints an error message and sets exit status
69 /// The message is printed only if verbosity level is at least V_ERROR.
70 /// The exit status is set to ERROR.
71 extern void message_error(const char *fmt, ...)
72 lzma_attribute((format(printf, 1, 2)));
75 /// \brief Prints an error message and exits with EXIT_ERROR
77 /// The message is printed only if verbosity level is at least V_ERROR.
78 extern void message_fatal(const char *fmt, ...)
79 lzma_attribute((format(printf, 1, 2)))
80 lzma_attribute((noreturn));
83 /// Print an error message that an internal error occurred and exit with
85 extern void message_bug(void) lzma_attribute((noreturn));
88 /// Print a message that establishing signal handlers failed, and exit with
89 /// exit status ERROR.
90 extern void message_signal_handler(void) lzma_attribute((noreturn));
93 /// Convert lzma_ret to a string.
94 extern const char *message_strm(lzma_ret code);
97 /// Print the filter chain.
98 extern void message_filters(
99 enum message_verbosity v, const lzma_filter *filters);
102 /// Print a message that user should try --help.
103 extern void message_try_help(void);
106 /// Prints the version number to stdout and exits with exit status SUCCESS.
107 extern void message_version(void) lzma_attribute((noreturn));
110 /// Print the help message.
111 extern void message_help(bool long_help) lzma_attribute((noreturn));
114 /// \brief Start progress info handling
116 /// This must be paired with a call to message_progress_end() before the
117 /// given *strm becomes invalid.
119 /// \param strm Pointer to lzma_stream used for the coding.
120 /// \param filename Name of the input file. stdin_filename is
121 /// handled specially.
122 /// \param in_size Size of the input file, or zero if unknown.
124 extern void message_progress_start(
125 lzma_stream *strm, const char *filename, uint64_t in_size);
128 /// Update the progress info if in verbose mode and enough time has passed
129 /// since the previous update. This can be called only when
130 /// message_progress_start() has already been used.
131 extern void message_progress_update(void);
134 /// \brief Finishes the progress message if we were in verbose mode
136 /// \param finished True if the whole stream was successfully coded
137 /// and output written to the output stream.
139 extern void message_progress_end(bool finished);