在Perl程序中顯示進度條之多姿多彩的自寫代碼

yixf 于 2011-11-29,09:57??

• 方法一

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#!/usr/bin/perlmy $max = 10; for ( 1 .. $max ) {my $percent = $_ / $max * 100;print "$_ - $percent % OK!\n";sleep(1); }

• 方法二

  從“…..”的長度來判斷進度。

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  #!/usr/bin/perl -w$| = 1; my $max = 10; for ( 1 .. $max ) {print ".";print " Complete!\n" if ( $_ == $max );sleep(1); }

  • 方法三

  用滾輪在原地顯示進度，當然也可以加入百分比。

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  #!/usr/bin/perl -wlocal $| = 1; my @progress_symbol = ( '-', '\\', '|', '/' ); my $n = 0; for ( my $i = 1 ; $i <= 100 ; $i++ ) {print "\r $progress_symbol[$n] $i";$n = ( $n 》= 3 ) ? 0 : $n + 1;select( undef, undef, undef, 0.1 ); } print "\n"; local $| = 0;

  • 方法四

  在原地顯示走時的數字時鐘，可以加入百分比。

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  #!/usr/bin/perl -wlocal $| = 1; for ( 1 .. 10 ) {&gettime;print "\r $now";sleep(1); } print "\n"; local $| = 0; exit;sub gettime {my ( $sec, $min, $hour, $day, $mon, $year, $weekday, $yeardate,$savinglightday )= ( localtime(time) );$sec = ( $sec 《 10 ) ? "0$sec" : $sec;$min = ( $min 《 10 ) ? "0$min" : $min;$hour = ( $hour 《 10 ) ? "0$hour" : $hour;$day = ( $day 《 10 ) ? "0$day" : $day;$mon = ( $mon 《 9 ) ? "0" . ( $mon + 1 ) : ( $mon + 1 );$year += 1900;$now = "$year.$mon.$day $hour:$min:$sec"; }

  • 方法五

  有百分比，有不斷增長的進度條。

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  #!/usr/bin/perl -w$n = 10; for ( $i = 1 ; $i 《= $n ; $i++ ) {proc_bar( $i, $n );select( undef, undef, undef, 0.2 ); } print "\n";sub proc_bar {local $| = 1;my $i = $_[0] || return 0;my $n = $_[1] || return 0;print "\r [ ". ( "32" x int( ( $i / $n ) * 50 ) ). ( " " x ( 50 - int( ( $i / $n ) * 50 ) ) ) . " ] ";printf( "%2.1f %%", $i / $n * 100 );local $| = 0; }

  • 方法六

  (自己比較喜歡的一種，推薦！)

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  #!/usr/bin/perl -w $n = 27; for ( $i = 1 ; $i 《= $n ; $i++ ) {proc_bar( $i, $n );select( undef, undef, undef, 0.2 ); } print "\n";sub proc_bar {local $| = 1;my $i = $_[0] || return 0;my $n = $_[1] || return 0;print "\r33[36m[33[33m". ( "|" x int( ( $i / $n ) * 50 ) ). ( " " x ( 50 - int( ( $i / $n ) * 50 ) ) ). "33[36m]";printf( "%2.1f%%33[0m", $i / $n * 100 );local $| = 0; }

  • 方法七

  (自己比較喜歡的一種，推薦！)

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  #!/usr/bin/perl -w # Author: Zhao # Date: 2009.12.22 # Purpose: simulate the progress bar # Update: 2009.12.23 # add color output # Update: 2010.5.22 # calculate remaining time$n = 1000; for ( $i = 1 ; $i 《= $n ; $i++ ) {proc_bar( $i, $n );select( undef, undef, undef, 0.01 ); } print "\n";sub proc_bar {local $| = 1;my ( $i, $n ) = @_;my $rt = '';my ( $num, $a, $b, @k, @v );if ( $i % 50 == 1 ) { $ts_global{$i} = time; }$num = scalar keys %ts_global;if ( $num 》= 5 ) {delete $ts_global{ $i - 250 };@k = keys %ts_global;@v = values %ts_global;( $b, $a ) = best_line( \@k, \@v );$rt = int( $b * $n + $a - time + 1 ) . "s ";}print "\r33[36m[33[33m". ( "#" x int( ( $i / $n ) * 50 ) ). ( " " x ( 50 - int( ( $i / $n ) * 50 ) ) ). "33[36m]";printf( "%2.1f%%33[0m", $i / $n * 100 );print " $rt"; }sub best_line {my ( $array1ref, $array2ref ) = @_;my ( $i, $product, $sum1, $sum2, $sum1_squares, $a, $b );for ( $i = 0 ; $i 《 @$array1ref ; $i++ ) {$product += $array1ref-》[$i] * $array2ref-》[$i];$sum1 += $array1ref-》[$i];$sum1_squares += $array1ref-》[$i]**2;$sum2 += $array2ref-》[$i];}$b =( ( @$array1ref * $product ) - ( $sum1 * $sum2 ) ) /( ( @$array1ref * $sum1_squares ) - ( $sum1**2 ) );$a = ( $sum2 - $b * $sum1 ) / @$array1ref;return ( $b, $a ); }

  • 方法八

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  #!/usr/bin/perluse strict;local $| = 1;my ( $min_prod_id, $max_prod_id ); print "Product ID Range (min max): "; my $input = 《STDIN》; if ( $input =~ /(\d+)\s+(\d+)/ ) {if ( $1 《= $2 ) {( $min_prod_id, $max_prod_id ) = ( $1, $2 );}else {( $min_prod_id, $max_prod_id ) = ( $2, $1 );} } else {&fatal_error("Error input!"); }foreach my $prod_id ( $min_prod_id .. $max_prod_id ) {my $pulse = int(( $prod_id - $min_prod_id ) / ( $max_prod_id - $min_prod_id ) * 100 );printf( "Progressing: [%-50s] %d%%\r", "#" x int( $pulse / 2 ), $pulse );#push(@prod_details, [$prod_id, $prod_name, $prod_price, $prod_saleprice]); }print "\n";sub fatal_error {my ($msg) = @_;warn "$msg\n";print "\nPlease Enter to exit...";;exit(1); }

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