Help: Process text block

A

Amy Lee

Hello,

I have many files fill with following contents.

10 dG = -27.9 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 12 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 45 8 0 0
9 A 8 10 46 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.3 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 35 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 16 8 0 0
9 A 8 10 0 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.2 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 71 4 0 0
5 U 4 6 0 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 0 8 0 9
9 A 8 10 128 9 8 10
10 U 9 11 127 10 9 11

The text block is from "dG" to the next "dG". And further I just process
the first block. So that's following contents.

1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 12 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 45 8 0 0
9 A 8 10 46 9 0 0
10 U 9 11 0 10 0 0

I don't know how to write such condition to do that. I used "while" loop
to do that but still failed. So could anyone show me some points?

Thank you very much.

Best Regards.

Amy Lee
 
T

Tad J McClellan

The text block is from "dG" to the next "dG". And further I just process
the first block.

I don't know how to write such condition to do that. I used "while" loop
to do that but still failed. So could anyone show me some points?
Click to expand...


--------------------------------------
#!/usr/bin/perl
use warnings;
use strict;

my $buffer = '';
while ( <DATA> ) {
if ( /dG = / and $buffer ) {
process_block($buffer);
$buffer = '';
}
$buffer .= $_;
}
process_block($buffer);

sub process_block { print "(($_[0]))\n\n" }


__DATA__
10 dG = -27.9 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 12 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 45 8 0 0
9 A 8 10 46 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.3 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 35 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 16 8 0 0
9 A 8 10 0 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.2 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 71 4 0 0
5 U 4 6 0 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 0 8 0 9
9 A 8 10 128 9 8 10
10 U 9 11 127 10 9 11
 
J

John W. Krahn

Amy said:
Hello,

I have many files fill with following contents.

10 dG = -27.9 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 12 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 45 8 0 0
9 A 8 10 46 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.3 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 35 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 16 8 0 0
9 A 8 10 0 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.2 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 71 4 0 0
5 U 4 6 0 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 0 8 0 9
9 A 8 10 128 9 8 10
10 U 9 11 127 10 9 11

The text block is from "dG" to the next "dG". And further I just process
the first block. So that's following contents.

1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 12 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 45 8 0 0
9 A 8 10 46 9 0 0
10 U 9 11 0 10 0 0

I don't know how to write such condition to do that. I used "while" loop
to do that but still failed. So could anyone show me some points?
Click to expand...

$ echo "
10 dG = -27.9 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 12 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 45 8 0 0
9 A 8 10 46 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.3 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 35 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 16 8 0 0
9 A 8 10 0 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.2 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 71 4 0 0
5 U 4 6 0 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 0 8 0 9
9 A 8 10 128 9 8 10
10 U 9 11 127 10 9 11
" | perl -ne'print if ?dG? ... /dG/ and ! /dG/'
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 12 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 45 8 0 0
9 A 8 10 46 9 0 0
10 U 9 11 0 10 0 0




John
 
A

Amy Lee

$ echo "
10 dG = -27.9 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 12 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 45 8 0 0
9 A 8 10 46 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.3 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 35 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 16 8 0 0
9 A 8 10 0 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.2 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 71 4 0 0
5 U 4 6 0 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 0 8 0 9
9 A 8 10 128 9 8 10
10 U 9 11 127 10 9 11
" | perl -ne'print if ?dG? ... /dG/ and ! /dG/'
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 12 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 45 8 0 0
9 A 8 10 46 9 0 0
10 U 9 11 0 10 0 0




John
Click to expand...
Thank you very much, anyway, how to write this into codes? Especially ?dG?
.... /dG/ part.

Amy Lee
 
A

Amy Lee

Thank you very much, anyway, how to write this into codes? Especially ?dG?
... /dG/ part.

Amy Lee
Click to expand...
And furthermore, could you explain the codes? I didn't understand it
clearly. Thank you very much.
 
A

Amy Lee

The text block is from "dG" to the next "dG". And further I just process
the first block.

I don't know how to write such condition to do that. I used "while" loop
to do that but still failed. So could anyone show me some points?
Click to expand...


--------------------------------------
#!/usr/bin/perl
use warnings;
use strict;

my $buffer = '';
while ( <DATA> ) {
if ( /dG = / and $buffer ) {
process_block($buffer);
$buffer = '';
}
$buffer .= $_;
}
process_block($buffer);

sub process_block { print "(($_[0]))\n\n" }


__DATA__
10 dG = -27.9 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 12 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 45 8 0 0
9 A 8 10 46 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.3 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 0 4 0 0
5 U 4 6 35 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 16 8 0 0
9 A 8 10 0 9 0 0
10 U 9 11 0 10 0 0
10 dG = -27.2 Gm01_9996700_9996828_gma-MIR1520b
1 U 0 2 0 1 0 0
2 U 1 3 0 2 0 0
3 U 2 4 0 3 0 0
4 C 3 5 71 4 0 0
5 U 4 6 0 5 0 0
6 A 5 7 0 6 0 0
7 A 6 8 0 7 0 0
8 A 7 9 0 8 0 9
9 A 8 10 128 9 8 10
10 U 9 11 127 10 9 11
--------------------------------------
Click to expand...
Thank you very much.

Amy
 
J

John W. Krahn

[ *SNIP* ]

[ *SNIP* ]

[ *SNIP* ]

[ *SNIP* ]

$ perl -MO=Deparse -ne'print if ?dG? ... /dG/ and ! /dG/'
LINE: while (defined($_ = <ARGV>)) {
print $_ if ?dG? ... /dG/ and not /dG/;
}
-e syntax OK


Or:

while ( <FILEHANDLE> ) {
if ( ?dG? ... /dG/ ) {
print unless /dG/;
}
}

And furthermore, could you explain the codes? I didn't understand it
clearly. Thank you very much.
Click to expand...

?dG? only matches the first time it is found while /dG/ will match every
time it is found. '...' is the flip-flop operator. The expression is
false until the left operand is true and then it is true until the right
operand is true when it becomes false again. So it matches the first
line that contains 'dG' until the next line that contains 'dG' and then
quits looking. And once it has found the correct line(s), you don't
want to print the line that contains 'dG', just the other lines.



John
 
A

Amy Lee

[ *SNIP* ]

[ *SNIP* ]

[ *SNIP* ]

[ *SNIP* ]

$ perl -MO=Deparse -ne'print if ?dG? ... /dG/ and ! /dG/'
LINE: while (defined($_ = <ARGV>)) {
print $_ if ?dG? ... /dG/ and not /dG/;
}
-e syntax OK


Or:

while ( <FILEHANDLE> ) {
if ( ?dG? ... /dG/ ) {
print unless /dG/;
}
}

And furthermore, could you explain the codes? I didn't understand it
clearly. Thank you very much.
Click to expand...

?dG? only matches the first time it is found while /dG/ will match every
time it is found. '...' is the flip-flop operator. The expression is
false until the left operand is true and then it is true until the right
operand is true when it becomes false again. So it matches the first
line that contains 'dG' until the next line that contains 'dG' and then
quits looking. And once it has found the correct line(s), you don't
want to print the line that contains 'dG', just the other lines.



John
Click to expand...
Thank you sir. However, when I use such following codes.

while (<>)
{
if (?dG? ... /dG/ && !/dG/)
{
print;
}
}
Still failed. So I don't know why it could happen, however if I change if
loop into if ((?dG? ... /dG/) && (!/dG/)) that could be available. So what
I wanna ask is the reason for such situations.

Thank you sir.

Amy
 
T

Tad J McClellan

[ snip a full quote ]
Thank you sir.
Click to expand...


DO NOT QUOTE ENTIRE ARTICLES!!

This is seen as rude, and I'm sure you do not want to be seen
as rude, so please stop doing that.

If you have a question about 5 lines of code, then quote only
those 5 lines of code, not the entire program that the lines appear in.

if (?dG? ... /dG/ && !/dG/)
Click to expand...
Still failed. So I don't know why it could happen, however if I change if
loop into if ((?dG? ... /dG/) && (!/dG/)) that could be available. So what
I wanna ask is the reason for such situations.
Click to expand...


Precedence.


perldoc perlop
 
J

John W. Krahn

Amy said:
Amy said:
On Mon, 26 Jan 2009 01:41:02 +0800, Amy Lee wrote:

On Sun, 25 Jan 2009 08:14:00 -0800, John W. Krahn wrote:

Amy Lee wrote:
I have many files fill with following contents.
Click to expand...
[ *SNIP* ]
The text block is from "dG" to the next "dG". And further I just process
the first block. So that's following contents.
Click to expand...
[ *SNIP* ]
I don't know how to write such condition to do that. I used "while" loop
to do that but still failed. So could anyone show me some points?
Click to expand...
[ *SNIP* ]
" | perl -ne'print if ?dG? ... /dG/ and ! /dG/'
Click to expand...
[ *SNIP* ]
Thank you very much, anyway, how to write this into codes? Especially ?dG?
... /dG/ part.
Click to expand...
$ perl -MO=Deparse -ne'print if ?dG? ... /dG/ and ! /dG/'
LINE: while (defined($_ = <ARGV>)) {
print $_ if ?dG? ... /dG/ and not /dG/;
}
-e syntax OK


Or:

while ( <FILEHANDLE> ) {
if ( ?dG? ... /dG/ ) {
print unless /dG/;
}
}

And furthermore, could you explain the codes? I didn't understand it
clearly. Thank you very much.
Click to expand...
?dG? only matches the first time it is found while /dG/ will match every
time it is found. '...' is the flip-flop operator. The expression is
false until the left operand is true and then it is true until the right
operand is true when it becomes false again. So it matches the first
line that contains 'dG' until the next line that contains 'dG' and then
quits looking. And once it has found the correct line(s), you don't
want to print the line that contains 'dG', just the other lines.
Click to expand...

Thank you sir. However, when I use such following codes.

while (<>)
{
if (?dG? ... /dG/ && !/dG/)
{
print;
}
}
Still failed. So I don't know why it could happen, however if I change if
loop into if ((?dG? ... /dG/) && (!/dG/)) that could be available. So what
I wanna ask is the reason for such situations.
Click to expand...

The reason I used 'and' instead of '&&' is exactly because of the high
precedence of '&&' which, as you say, doesn't work unless you use
parentheses. If you are going to change the code I posted you have to
expect different results sometimes.



John
 

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