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Fixes to progress message handling in xz:

Browse source 
- Don't use Windows-specific code on Windows. The old code
    required at least Windows 2000. Now it should work on
    Windows 98 and later, and maybe on Windows 95 too.

  - Use less precision when showing estimated remaining time.

  - Fix some small design issues.
This commit is contained in:
Lasse Collin 2009-02-22 18:52:49 +02:00
parent 47c2e21f82
commit 68bf7ac298
3 changed files with 355 additions and 217 deletions
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477
src/xz/message.c
View file

@ -23,13 +23,6 @@
# include <sys/time.h>
#endif
#ifdef _WIN32
# ifndef _WIN32_WINNT
# define _WIN32_WINNT 0x0500
# endif
# include <windows.h>
#endif
#include <stdarg.h>
@ -51,77 +44,53 @@ static const char *filename;
/// True once the a filename has been printed to stderr as part of progress
/// message. If automatic progress updating isn't enabled, this becomes true
/// after the first progress message has been printed due to user sending
/// SIGALRM. Once this variable is true, we will print an empty line before
/// the next filename to make the output more readable.
/// SIGINFO, SIGUSR1, or SIGALRM. Once this variable is true, we will print
/// an empty line before the next filename to make the output more readable.
static bool first_filename_printed = false;
/// This is set to true when we have printed the current filename to stderr
/// as part of a progress message. This variable is useful only if not
/// updating progress automatically: if user sends many SIGALRM signals,
/// we won't print the name of the same file multiple times.
/// updating progress automatically: if user sends many SIGINFO, SIGUSR1, or
/// SIGALRM signals, we won't print the name of the same file multiple times.
static bool current_filename_printed = false;
/// True if we should print progress indicator and update it automatically.
/// True if we should print progress indicator and update it automatically
/// if also verbose >= V_VERBOSE.
static bool progress_automatic;
/// True if message_progress_start() has been called but
/// message_progress_end() hasn't been called yet.
static bool progress_started = false;
/// This is true when a progress message was printed and the cursor is still
/// on the same line with the progress message. In that case, a newline has
/// to be printed before any error messages.
static bool progress_active = false;
/// Pointer to lzma_stream used to do the encoding or decoding.
static lzma_stream *progress_strm;
/// Expected size of the input stream is needed to show completion percentage
/// and estimate remaining time.
static uint64_t expected_in_size;
/// Time when we started processing the file
static double start_time;
static uint64_t start_time;
// Use alarm() and SIGALRM when they are supported. This has two minor
// advantages over the alternative of polling gettimeofday():
// - It is possible for the user to send SIGINFO, SIGUSR1, or SIGALRM to
// get intermediate progress information even when --verbose wasn't used
// or stderr is not a terminal.
// - alarm() + SIGALRM seems to have slightly less overhead than polling
// gettimeofday().
#ifdef SIGALRM
/// The signal handler for SIGALRM sets this to true. It is set back to false
/// once the progress message has been updated.
static volatile sig_atomic_t progress_needs_updating = false;
#ifdef _WIN32
static HANDLE timer_queue = NULL;
static HANDLE timer_timer = NULL;
static void CALLBACK
timer_callback(PVOID dummy1 lzma_attribute((unused)),
BOOLEAN dummy2 lzma_attribute((unused)))
{
progress_needs_updating = true;
return;
}
/// Emulate alarm() on Windows.
static void
my_alarm(unsigned int seconds)
{
// Just in case creating the queue has failed.
if (timer_queue == NULL)
return;
// If an old timer_timer exists, get rid of it first.
if (timer_timer != NULL) {
(void)DeleteTimerQueueTimer(timer_queue, timer_timer, NULL);
timer_timer = NULL;
}
// If it fails, tough luck. It's not that important.
(void)CreateTimerQueueTimer(&timer_timer, timer_queue, &timer_callback,
NULL, 1000U * seconds, 0,
WT_EXECUTEINTIMERTHREAD | WT_EXECUTEONLYONCE);
return;
}
#else
#define my_alarm alarm
/// Signal handler for SIGALRM
static void
progress_signal_handler(int sig lzma_attribute((unused)))
@ -130,21 +99,25 @@ progress_signal_handler(int sig lzma_attribute((unused)))
return;
}
#else
/// This is true when progress message printing is wanted. Using the same
/// variable name as above to avoid some ifdefs.
static bool progress_needs_updating = false;
/// Elapsed time when the next progress message update should be done.
static uint64_t progress_next_update;
#endif
/// Get the current time as double
static double
/// Get the current time as microseconds since epoch
static uint64_t
my_time(void)
{
struct timeval tv;
// This really shouldn't fail. I'm not sure what to return if it
// still fails. It doesn't look so useful to check the return value
// everywhere. FIXME?
if (gettimeofday(&tv, NULL))
return -1.0;
return (double)(tv.tv_sec) + (double)(tv.tv_usec) / 1.0e6;
gettimeofday(&tv, NULL);
return (uint64_t)(tv.tv_sec) * UINT64_C(1000000) + tv.tv_usec;
}
@ -204,19 +177,35 @@ message_init(const char *given_argv0)
}
*/
#ifdef _WIN32
timer_queue = CreateTimerQueue();
#else
#ifdef SIGALRM
// At least DJGPP lacks SA_RESTART. It's not essential for us (the
// rest of the code can handle interrupted system calls), so just
// define it zero.
# ifndef SA_RESTART
# define SA_RESTART 0
# endif
// Establish the signal handler for SIGALRM. Since this signal
// doesn't require any quick action, we set SA_RESTART.
// Establish the signal handlers which set a flag to tell us that
// progress info should be updated. Since these signals don't
// require any quick action, we set SA_RESTART.
static const int sigs[] = {
#ifdef SIGALRM
SIGALRM,
#endif
#ifdef SIGINFO
SIGINFO,
#endif
#ifdef SIGUSR1
SIGUSR1,
#endif
};
struct sigaction sa;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
sa.sa_handler = &progress_signal_handler;
if (sigaction(SIGALRM, &sa, NULL))
for (size_t i = 0; i < ARRAY_SIZE(sigs); ++i)
if (sigaction(sigs[i], &sa, NULL))
message_signal_handler();
#endif
@ -288,16 +277,25 @@ print_filename(void)
extern void
message_progress_start(const char *src_name, uint64_t in_size)
message_progress_start(
lzma_stream *strm, const char *src_name, uint64_t in_size)
{
// Store the pointer to the lzma_stream used to do the coding.
// It is needed to find out the position in the stream.
progress_strm = strm;
// Store the processing start time of the file and its expected size.
// If we aren't printing any statistics, then these are unused. But
// since it is possible that the user tells us with SIGALRM to show
// since it is possible that the user sends us a signal to show
// statistics, we need to have these available anyway.
start_time = my_time();
filename = src_name;
expected_in_size = in_size;
// Indicate that progress info may need to be printed before
// printing error messages.
progress_started = true;
// Indicate the name of this file hasn't been printed to
// stderr yet.
current_filename_printed = false;
@ -306,19 +304,26 @@ message_progress_start(const char *src_name, uint64_t in_size)
++files_pos;
// If progress indicator is wanted, print the filename and possibly
// the file count now. As an exception, if there is exactly one file,
// do not print the filename at all.
// the file count now.
if (verbosity >= V_VERBOSE && progress_automatic) {
// Print the filename to stderr if that is appropriate with
// the current settings.
print_filename();
// Start the timer to set progress_needs_updating to true
// after about one second. An alternative would to be set
// progress_needs_updating to true here immediatelly, but
// setting the timer looks better to me, since extremely
// early progress info is pretty much useless.
my_alarm(1);
// Start the timer to display the first progress message
// after one second. An alternative would be to show the
// first message almost immediatelly, but delaying by one
// second looks better to me, since extremely early
// progress info is pretty much useless.
#ifdef SIGALRM
// First disable a possibly existing alarm.
alarm(0);
progress_needs_updating = false;
alarm(1);
#else
progress_needs_updating = true;
progress_next_update = 1000000;
#endif
}
return;
@ -327,8 +332,18 @@ message_progress_start(const char *src_name, uint64_t in_size)
/// Make the string indicating completion percentage.
static const char *
progress_percentage(uint64_t in_pos)
progress_percentage(uint64_t in_pos, bool final)
{
static char buf[sizeof("100.0 %")];
double percentage;
if (final) {
// Use floating point conversion of snprintf() also for
// 100.0 % instead of fixed string, because the decimal
// separator isn't a dot in all locales.
percentage = 100.0;
} else {
// If the size of the input file is unknown or the size told us is
// clearly wrong since we have processed more data than the alleged
// size of the file, show a static string indicating that we have
@ -336,12 +351,12 @@ progress_percentage(uint64_t in_pos)
if (expected_in_size == 0 || in_pos > expected_in_size)
return "--- %";
static char buf[sizeof("99.9 %")];
// Never show 100.0 % before we actually are finished.
percentage = (double)(in_pos) / (double)(expected_in_size)
* 99.9;
}
// Never show 100.0 % before we actually are finished (that case is
// handled separately in message_progress_end()).
snprintf(buf, sizeof(buf), "%.1f %%",
(double)(in_pos) / (double)(expected_in_size) * 99.9);
snprintf(buf, sizeof(buf), "%.1f %%", percentage);
return buf;
}
@ -350,6 +365,8 @@ progress_percentage(uint64_t in_pos)
static void
progress_sizes_helper(char **pos, size_t *left, uint64_t value, bool final)
{
// Allow high precision only for the final message, since it looks
// stupid for in-progress information.
if (final) {
// At maximum of four digits is allowed for exact byte count.
if (value < 10000) {
@ -368,6 +385,7 @@ progress_sizes_helper(char **pos, size_t *left, uint64_t value, bool final)
// Otherwise we use MiB.
my_snprintf(pos, left, "%'.1f MiB",
(double)(value) / (1024.0 * 1024.0));
return;
}
@ -412,11 +430,11 @@ progress_sizes(uint64_t compressed_pos, uint64_t uncompressed_pos, bool final)
/// Make the string containing the processing speed of uncompressed data.
static const char *
progress_speed(uint64_t uncompressed_pos, double elapsed)
progress_speed(uint64_t uncompressed_pos, uint64_t elapsed)
{
// Don't print the speed immediatelly, since the early values look
// like somewhat random.
if (elapsed < 3.0)
if (elapsed < 3000000)
return "";
static const char unit[][8] = {
@ -428,17 +446,24 @@ progress_speed(uint64_t uncompressed_pos, double elapsed)
size_t unit_index = 0;
// Calculate the speed as KiB/s.
double speed = (double)(uncompressed_pos) / (elapsed * 1024.0);
double speed = (double)(uncompressed_pos)
/ ((double)(elapsed) * (1024.0 / 1e6));
// Adjust the unit of the speed if needed.
while (speed > 999.9) {
while (speed > 999.0) {
speed /= 1024.0;
if (++unit_index == ARRAY_SIZE(unit))
return ""; // Way too fast ;-)
}
static char buf[sizeof("999.9 GiB/s")];
snprintf(buf, sizeof(buf), "%.1f %s", speed, unit[unit_index]);
// Use decimal point only if the number is small. Examples:
// - 0.1 KiB/s
// - 9.9 KiB/s
// - 99 KiB/s
// - 999 KiB/s
static char buf[sizeof("999 GiB/s")];
snprintf(buf, sizeof(buf), "%.*f %s",
speed > 9.9 ? 0 : 1, speed, unit[unit_index]);
return buf;
}
@ -446,13 +471,15 @@ progress_speed(uint64_t uncompressed_pos, double elapsed)
/// Make a string indicating elapsed or remaining time. The format is either
/// M:SS or H:MM:SS depending on if the time is an hour or more.
static const char *
progress_time(uint32_t seconds)
progress_time(uint64_t useconds)
{
// 9999 hours = 416 days
static char buf[sizeof("9999:59:59")];
uint32_t seconds = useconds / 1000000;
// Don't show anything if the time is zero or ridiculously big.
if (seconds == 0 || seconds > ((UINT32_C(9999) * 60) + 59) * 60 + 59)
if (seconds == 0 || seconds > ((9999 * 60) + 59) * 60 + 59)
return "";
uint32_t minutes = seconds / 60;
@ -476,87 +503,187 @@ progress_time(uint32_t seconds)
/// Make the string to contain the estimated remaining time, or if the amount
/// of input isn't known, how much time has elapsed.
static const char *
progress_remaining(uint64_t in_pos, double elapsed)
progress_remaining(uint64_t in_pos, uint64_t elapsed)
{
// If we don't know the size of the input, we indicate the time
// spent so far.
if (expected_in_size == 0 || in_pos > expected_in_size)
return progress_time((uint32_t)(elapsed));
// If we are at the very beginning of the file or the file is very
// small, don't give any estimate to avoid far too wrong estimations.
if (in_pos < (UINT64_C(1) << 19) || elapsed < 8.0)
return "";
// Show the amount of time spent so far when making an estimate of
// remaining time wouldn't be reasonable:
// - Input size is unknown.
// - Input has grown bigger since we started (de)compressing.
// - We haven't processed much data yet, so estimate would be
// too inaccurate.
// - Only a few seconds has passed since we started (de)compressing,
// so estimate would be too inaccurate.
if (expected_in_size == 0 || in_pos > expected_in_size
|| in_pos < (UINT64_C(1) << 19) || elapsed < 8000000)
return progress_time(elapsed);
// Calculate the estimate. Don't give an estimate of zero seconds,
// since it is possible that all the input has been already passed
// to the library, but there is still quite a bit of output pending.
uint32_t remaining = (double)(expected_in_size - in_pos)
* elapsed / (double)(in_pos);
if (remaining == 0)
* ((double)(elapsed) / 1e6) / (double)(in_pos);
if (remaining < 1)
remaining = 1;
return progress_time(remaining);
static char buf[sizeof("9 h 55 min")];
// Select appropriate precision for the estimated remaining time.
if (remaining <= 10) {
// At maximum of 10 seconds remaining.
// Show the number of seconds as is.
snprintf(buf, sizeof(buf), "%" PRIu32 " s", remaining);
} else if (remaining <= 50) {
// At maximum of 50 seconds remaining.
// Round up to the next multiple of five seconds.
remaining = (remaining + 4) / 5 * 5;
snprintf(buf, sizeof(buf), "%" PRIu32 " s", remaining);
} else if (remaining <= 590) {
// At maximum of 9 minutes and 50 seconds remaining.
// Round up to the next multiple of ten seconds.
remaining = (remaining + 9) / 10 * 10;
snprintf(buf, sizeof(buf), "%" PRIu32 " min %" PRIu32 " s",
remaining / 60, remaining % 60);
} else if (remaining <= 59 * 60) {
// At maximum of 59 minutes remaining.
// Round up to the next multiple of a minute.
remaining = (remaining + 59) / 60;
snprintf(buf, sizeof(buf), "%" PRIu32 " min", remaining);
} else if (remaining <= 9 * 3600 + 50 * 60) {
// At maximum of 9 hours and 50 minutes left.
// Round up to the next multiple of ten minutes.
remaining = (remaining + 599) / 600 * 10;
snprintf(buf, sizeof(buf), "%" PRIu32 " h %" PRIu32 " min",
remaining / 60, remaining % 60);
} else if (remaining <= 23 * 3600) {
// At maximum of 23 hours remaining.
// Round up to the next multiple of an hour.
remaining = (remaining + 3599) / 3600;
snprintf(buf, sizeof(buf), "%" PRIu32 " h", remaining);
} else if (remaining <= 9 * 24 * 3600 + 23 * 3600) {
// At maximum of 9 days and 23 hours remaining.
// Round up to the next multiple of an hour.
remaining = (remaining + 3599) / 3600;
snprintf(buf, sizeof(buf), "%" PRIu32 " d %" PRIu32 " h",
remaining / 24, remaining % 24);
} else if (remaining <= 999 * 24 * 3600) {
// At maximum of 999 days remaining. ;-)
// Round up to the next multiple of a day.
remaining = (remaining + 24 * 3600 - 1) / (24 * 3600);
snprintf(buf, sizeof(buf), "%" PRIu32 " d", remaining);
} else {
// The estimated remaining time is so big that it's better
// that we just show the elapsed time.
return progress_time(elapsed);
}
return buf;
}
/// Calculate the elapsed time as microseconds.
static uint64_t
progress_elapsed(void)
{
return my_time() - start_time;
}
/// Get information about position in the stream. This is currently simple,
/// but it will become more complicated once we have multithreading support.
static void
progress_pos(uint64_t *in_pos,
uint64_t *compressed_pos, uint64_t *uncompressed_pos)
{
*in_pos = progress_strm->total_in;
if (opt_mode == MODE_COMPRESS) {
*compressed_pos = progress_strm->total_out;
*uncompressed_pos = progress_strm->total_in;
} else {
*compressed_pos = progress_strm->total_in;
*uncompressed_pos = progress_strm->total_out;
}
return;
}
extern void
message_progress_update(uint64_t in_pos, uint64_t out_pos)
message_progress_update(void)
{
// If there's nothing to do, return immediatelly.
if (!progress_needs_updating || in_pos == 0)
if (!progress_needs_updating)
return;
// Calculate how long we have been processing this file.
const uint64_t elapsed = progress_elapsed();
#ifndef SIGALRM
if (progress_next_update > elapsed)
return;
progress_next_update = elapsed + 1000000;
#endif
// Get our current position in the stream.
uint64_t in_pos;
uint64_t compressed_pos;
uint64_t uncompressed_pos;
progress_pos(&in_pos, &compressed_pos, &uncompressed_pos);
// Block signals so that fprintf() doesn't get interrupted.
signals_block();
// Print the filename if it hasn't been printed yet.
print_filename();
// Calculate how long we have been processing this file.
const double elapsed = my_time() - start_time;
// Set compressed_pos and uncompressed_pos.
uint64_t compressed_pos;
uint64_t uncompressed_pos;
if (opt_mode == MODE_COMPRESS) {
compressed_pos = out_pos;
uncompressed_pos = in_pos;
} else {
compressed_pos = in_pos;
uncompressed_pos = out_pos;
}
signals_block();
// Print the actual progress message. The idea is that there is at
// least three spaces between the fields in typical situations, but
// even in rare situations there is at least one space.
fprintf(stderr, " %7s %43s %11s %10s\r",
progress_percentage(in_pos),
fprintf(stderr, " %7s %43s %9s %10s\r",
progress_percentage(in_pos, false),
progress_sizes(compressed_pos, uncompressed_pos, false),
progress_speed(uncompressed_pos, elapsed),
progress_remaining(in_pos, elapsed));
#ifdef SIGALRM
// Updating the progress info was finished. Reset
// progress_needs_updating to wait for the next SIGALRM.
//
// NOTE: This has to be done before my_alarm() call or with (very) bad
// NOTE: This has to be done before alarm(1) or with (very) bad
// luck we could be setting this to false after the alarm has already
// been triggered.
progress_needs_updating = false;
if (progress_automatic) {
if (verbosity >= V_VERBOSE && progress_automatic) {
// Mark that the progress indicator is active, so if an error
// occurs, the error message gets printed cleanly.
progress_active = true;
// Restart the timer so that progress_needs_updating gets
// set to true after about one second.
my_alarm(1);
alarm(1);
} else {
// The progress message was printed because user had sent us
// SIGALRM. In this case, each progress message is printed
// on its own line.
fputc('\n', stderr);
}
#else
// When SIGALRM isn't supported and we get here, it's always due to
// automatic progress update. We set progress_active here too like
// described above.
assert(verbosity >= V_VERBOSE);
assert(progress_automatic);
progress_active = true;
#endif
signals_unblock();
@ -564,57 +691,58 @@ message_progress_update(uint64_t in_pos, uint64_t out_pos)
}
extern void
message_progress_end(uint64_t in_pos, uint64_t out_pos, bool success)
static void
progress_flush(bool finished)
{
// If we are not in verbose mode, we have nothing to do.
if (verbosity < V_VERBOSE || user_abort)
if (!progress_started || verbosity < V_VERBOSE)
return;
// Cancel a pending alarm, if any.
if (progress_automatic) {
my_alarm(0);
progress_active = false;
}
const double elapsed = my_time() - start_time;
uint64_t in_pos;
uint64_t compressed_pos;
uint64_t uncompressed_pos;
if (opt_mode == MODE_COMPRESS) {
compressed_pos = out_pos;
uncompressed_pos = in_pos;
} else {
compressed_pos = in_pos;
uncompressed_pos = out_pos;
}
progress_pos(&in_pos, &compressed_pos, &uncompressed_pos);
// If it took less than a second, don't display the time.
const char *elapsed_str = progress_time((double)(elapsed));
// Avoid printing intermediate progress info if some error occurs
// in the beginning of the stream. (If something goes wrong later in
// the stream, it is sometimes useful to tell the user where the
// error approximately occurred, especially if the error occurs
// after a time-consuming operation.)
if (!finished && !progress_active
&& (compressed_pos == 0 || uncompressed_pos == 0))
return;
progress_active = false;
const uint64_t elapsed = progress_elapsed();
const char *elapsed_str = progress_time(elapsed);
signals_block();
// When using the auto-updating progress indicator, the final
// statistics are printed in the same format as the progress
// indicator itself.
if (progress_automatic && in_pos > 0) {
if (progress_automatic) {
// Using floating point conversion for the percentage instead
// of static "100.0 %" string, because the decimal separator
// isn't a dot in all locales.
fprintf(stderr, " %5.1f %% %43s %11s %10s\n",
100.0,
fprintf(stderr, " %7s %43s %9s %10s\n",
progress_percentage(in_pos, finished),
progress_sizes(compressed_pos, uncompressed_pos, true),
progress_speed(uncompressed_pos, elapsed),
elapsed_str);
} else {
// The filename is always printed.
fprintf(stderr, "%s: ", filename);
// When no automatic progress indicator is used, don't print a verbose
// message at all if we something went wrong and we couldn't produce
// any output. If we did produce output, then it is sometimes useful
// to tell that to the user, especially if we detected an error after
// a time-consuming operation.
} else if (success || out_pos > 0) {
// The filename and size information are always printed.
fprintf(stderr, "%s: %s", filename, progress_sizes(
// Percentage is printed only if we didn't finish yet.
// FIXME: This may look weird when size of the input
// isn't known.
if (!finished)
fprintf(stderr, "%s, ",
progress_percentage(in_pos, false));
// Size information is always printed.
fprintf(stderr, "%s", progress_sizes(
compressed_pos, uncompressed_pos, true));
// The speed and elapsed time aren't always shown.
@ -634,22 +762,23 @@ message_progress_end(uint64_t in_pos, uint64_t out_pos, bool success)
}
extern void
message_progress_end(bool success)
{
assert(progress_started);
progress_flush(success);
progress_started = false;
return;
}
static void
vmessage(enum message_verbosity v, const char *fmt, va_list ap)
{
if (v <= verbosity) {
signals_block();
// If there currently is a progress message on the screen,
// print a newline so that the progress message is left
// readable. This is good, because it is nice to be able to
// see where the error occurred. (The alternative would be
// to clear the progress message and replace it with the
// error message.)
if (progress_active) {
progress_active = false;
fputc('\n', stderr);
}
progress_flush(false);
fprintf(stderr, "%s: ", argv0);
vfprintf(stderr, fmt, ap);

28
src/xz/message.h
View file

@ -111,21 +111,29 @@ extern void message_version(void) lzma_attribute((noreturn));
extern void message_help(bool long_help) lzma_attribute((noreturn));
/// \brief Start progress info handling
///
extern void message_progress_start(const char *filename, uint64_t in_size);
/// This must be paired with a call to message_progress_end() before the
/// given *strm becomes invalid.
///
/// \param strm Pointer to lzma_stream used for the coding.
/// \param filename Name of the input file. stdin_filename is
/// handled specially.
/// \param in_size Size of the input file, or zero if unknown.
///
extern void message_progress_start(
lzma_stream *strm, const char *filename, uint64_t in_size);
///
extern void message_progress_update(uint64_t in_pos, uint64_t out_pos);
/// Update the progress info if in verbose mode and enough time has passed
/// since the previous update. This can be called only when
/// message_progress_start() has already been used.
extern void message_progress_update(void);
/// \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.
/// \param finished True if the whole stream was successfully coded
/// and output written to the output stream.
///
extern void message_progress_end(
uint64_t in_pos, uint64_t out_pos, bool success);
extern void message_progress_end(bool finished);

53
src/xz/process.c
View file

@ -337,10 +337,11 @@ coder_run(file_pair *pair)
// Initialize the progress indicator.
const uint64_t in_size = pair->src_st.st_size <= (off_t)(0)
? 0 : (uint64_t)(pair->src_st.st_size);
message_progress_start(pair->src_name, in_size);
message_progress_start(&strm, pair->src_name, in_size);
lzma_action action = LZMA_RUN;
lzma_ret ret;
bool success = false; // Assume that something goes wrong.
strm.avail_in = 0;
strm.next_out = out_buf;
@ -370,7 +371,7 @@ coder_run(file_pair *pair)
if (strm.avail_out == 0) {
if (opt_mode != MODE_TEST && io_write(pair, out_buf,
IO_BUFFER_SIZE - strm.avail_out))
return false;
break;
strm.next_out = out_buf;
strm.avail_out = IO_BUFFER_SIZE;
@ -383,18 +384,6 @@ coder_run(file_pair *pair)
&& ret != LZMA_UNSUPPORTED_CHECK;
if (stop) {
// First print the final progress info.
// This way the user sees more accurately
// where the error occurred. Note that we
// print this *before* the possible error
// message.
//
// FIXME: What if something goes wrong
// after this?
message_progress_end(strm.total_in,
strm.total_out,
ret == LZMA_STREAM_END);
// Write the remaining bytes even if something
// went wrong, because that way the user gets
// as much data as possible, which can be good
@ -403,21 +392,32 @@ coder_run(file_pair *pair)
if (opt_mode != MODE_TEST && io_write(pair,
out_buf, IO_BUFFER_SIZE
- strm.avail_out))
return false;
break;
}
if (ret == LZMA_STREAM_END) {
// Check that there is no trailing garbage.
// This is needed for LZMA_Alone and raw
// streams.
if (strm.avail_in == 0 && (pair->src_eof
|| io_read(pair, in_buf, 1)
== 0)) {
assert(pair->src_eof);
return true;
if (strm.avail_in == 0 && !pair->src_eof) {
// Try reading one more byte.
// Hopefully we don't get any more
// input, and thus pair->src_eof
// becomes true.
strm.avail_in = io_read(
pair, in_buf, 1);
if (strm.avail_in == SIZE_MAX)
break;
assert(strm.avail_in == 0
|| strm.avail_in == 1);
}
// FIXME: What about io_read() failing?
if (strm.avail_in == 0) {
assert(pair->src_eof);
success = true;
break;
}
// We hadn't reached the end of the file.
ret = LZMA_DATA_ERROR;
@ -461,15 +461,16 @@ coder_run(file_pair *pair)
}
if (stop)
return false;
break;
}
// Show progress information if --verbose was specified and
// stderr is a terminal.
message_progress_update(strm.total_in, strm.total_out);
// Show progress information under certain conditions.
message_progress_update();
}
return false;
message_progress_end(success);
return success;
}