Ripped from Mandrake.

http://bugs.gentoo.org/show_bug.cgi?id=82192

--- bzip2-1.0.2.org/bzip2.1

+++ bzip2-1.0.2/bzip2.1

@@ -235,6 +235,10 @@

 Suppress non-essential warning messages.  Messages pertaining to

 I/O errors and other critical events will not be suppressed.

 .TP

+.B \-p --show-progress

+Show percentage of input-file done and while compressing show the percentage

+of the original file the new file is.

+.TP

 .B \-v --verbose

 Verbose mode -- show the compression ratio for each file processed.

 Further \-v's increase the verbosity level, spewing out lots of

--- bzip2-1.0.2.org/bzip2.c

+++ bzip2-1.0.2/bzip2.c

@@ -145,6 +145,7 @@

 #include <signal.h>

 #include <math.h>

 #include <errno.h>

+#include <time.h>

 #include <ctype.h>

 #include "bzlib.h"

@@ -301,6 +302,7 @@

 Char    progNameReally[FILE_NAME_LEN];

 FILE    *outputHandleJustInCase;

 Int32   workFactor;

+Char	showProgress;

 static void    panic                 ( Char* )   NORETURN;

 static void    ioError               ( void )    NORETURN;

@@ -425,6 +427,12 @@

    UInt32  nbytes_in_lo32, nbytes_in_hi32;

    UInt32  nbytes_out_lo32, nbytes_out_hi32;

    Int32   bzerr, bzerr_dummy, ret;

+   double  fileSize = 0; /* initialized to make the compiler stop crying */

+                         /* double because big files might otherwhise give

+                          * overflows. not long long since not all compilers

+                          * support that one

+                          */

+   time_t  startTime, currentTime;

    SET_BINARY_MODE(stream);

    SET_BINARY_MODE(zStream);

@@ -432,12 +440,21 @@

    if (ferror(stream)) goto errhandler_io;

    if (ferror(zStream)) goto errhandler_io;

+   if ((srcMode == SM_F2F || srcMode == SM_F2O) && showProgress == True) {

+      (void)fseek(stream, 0, SEEK_END);

+      fileSize = (double)ftell(stream);

+      rewind(stream);

+      if (verbosity >= 1)

+         fprintf(stderr, "Input-file size: %ld\n", (long)fileSize);

+   }

+

    bzf = BZ2_bzWriteOpen ( &bzerr, zStream, 

                            blockSize100k, verbosity, workFactor );   

    if (bzerr != BZ_OK) goto errhandler;

    if (verbosity >= 2) fprintf ( stderr, "\n" );

+   time(&startTime);

    while (True) {

       if (myfeof(stream)) break;

@@ -446,13 +463,32 @@

       if (nIbuf > 0) BZ2_bzWrite ( &bzerr, bzf, (void*)ibuf, nIbuf );

       if (bzerr != BZ_OK) goto errhandler;

+      if ((srcMode == SM_F2F || srcMode == SM_F2O) && showProgress == True)

+      {

+         time(&currentTime);

+

+         if ((currentTime - startTime) > 1) { /* show progress every 2 seconds */

+            double curInPos = (double)ftell(stream);

+            double curOutPos = (double)ftell(zStream);

+

+            startTime = currentTime;

+

+            fprintf(stderr, "%.2f%% done", (curInPos * 100.0) / fileSize);

+            if (srcMode == SM_F2F)

+            {

+               fprintf(stderr, ", new size: %.2f%%", (curOutPos * 100.0) / curInPos);

+            }

+

+            fprintf(stderr, "    \r");

+         }

+      }

    }

    BZ2_bzWriteClose64 ( &bzerr, bzf, 0, 

                         &nbytes_in_lo32, &nbytes_in_hi32,

                         &nbytes_out_lo32, &nbytes_out_hi32 );

    if (bzerr != BZ_OK) goto errhandler;

-

+   

    if (ferror(zStream)) goto errhandler_io;

    ret = fflush ( zStream );

    if (ret == EOF) goto errhandler_io;

@@ -526,6 +562,8 @@

    UChar   unused[BZ_MAX_UNUSED];

    Int32   nUnused;

    UChar*  unusedTmp;

+   double  fileSize = 0; /* initialized to make the compiler stop crying */

+   time_t  startTime, currentTime;

    nUnused = 0;

    streamNo = 0;

@@ -533,9 +571,19 @@

    SET_BINARY_MODE(stream);

    SET_BINARY_MODE(zStream);

+   if ((srcMode == SM_F2F || srcMode == SM_F2O) && showProgress == True) {

+      long dummy = ftell(zStream);

+      (void)fseek(zStream, 0, SEEK_END);

+      fileSize = (double)ftell(zStream);

+      (void)fseek(zStream, dummy, SEEK_SET);

+      if (verbosity >= 1)

+         fprintf(stderr, "Input-file size: %ld\n", (long)fileSize);

+   }

+

    if (ferror(stream)) goto errhandler_io;

    if (ferror(zStream)) goto errhandler_io;

+   time(&startTime);

    while (True) {

       bzf = BZ2_bzReadOpen ( 

@@ -551,6 +599,17 @@

          if ((bzerr == BZ_OK || bzerr == BZ_STREAM_END) && nread > 0)

             fwrite ( obuf, sizeof(UChar), nread, stream );

          if (ferror(stream)) goto errhandler_io;

+

+         if ((srcMode == SM_F2F || srcMode == SM_F2O) && showProgress == True) {

+            time(&currentTime);

+            if ((currentTime - startTime) >= 2)

+            {

+               double curInPos = (double)ftell(zStream);

+               startTime = currentTime;

+

+               fprintf(stderr, "%.2f%% done\r", (curInPos * 100.0) / fileSize);

+            }

+         }

       }

       if (bzerr != BZ_STREAM_END) goto errhandler;

@@ -1872,6 +1931,7 @@

    deleteOutputOnInterrupt = False;

    exitValue               = 0;

    i = j = 0; /* avoid bogus warning from egcs-1.1.X */

+   showProgress            = False;

    /*-- Set up signal handlers for mem access errors --*/

    signal (SIGSEGV, mySIGSEGVorSIGBUScatcher);

@@ -1949,6 +2009,7 @@

                case 'k': keepInputFiles   = True; break;

                case 's': smallMode        = True; break;

                case 'q': noisy            = False; break;

+               case 'p': showProgress     = True; break;

                case '1': blockSize100k    = 1; break;

                case '2': blockSize100k    = 2; break;

                case '3': blockSize100k    = 3; break;

@@ -1985,6 +2046,7 @@

       if (ISFLAG("--keep"))              keepInputFiles   = True;    else

       if (ISFLAG("--small"))             smallMode        = True;    else

       if (ISFLAG("--quiet"))             noisy            = False;   else

+      if (ISFLAG("--show-progress"))     showProgress     = True;    else

       if (ISFLAG("--version"))           license();                  else

       if (ISFLAG("--license"))           license();                  else

       if (ISFLAG("--exponential"))       workFactor = 1;             else