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Dynamic command line generation with awk

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# 1  
Old 03-18-2010
Dynamic command line generation with awk
Hi,
I'm not an expert in awk but i need a simple script to do this:

I'd like to AutoCrop PDF files.
I found 2 simple script that combined together could help me to automatize Smilie

The first utiliti is "pdfinfo" that it gives the MediaBox and TrimBox values from the pdf.
The pdfinfo output is:
Code:
[bags@TheBagsMan Scrivania]$ pdfinfo -box '/home/bags/Scrivania/0280.u3_capitolo15.pdf' 
Creator: Adobe InDesign CS3 (5.0.4)
Producer: Adobe PDF Library 8.0
CreationDate: Sun Nov 8 18:52:01 2009
ModDate: Tue Mar 16 14:48:00 2010
Tagged: no
Pages: 18
Encrypted: no
Page size: 680.268×898.535 pts
MediaBox: 0.00 0.00 680.27 898.53
CropBox: 0.00 0.00 680.27 898.53
BleedBox: 28.32 28.32 651.94 870.21
TrimBox: 42.50 42.50 637.77 856.04
ArtBox: 42.50 42.50 637.77 856.04
File size: 29864683 bytes
Optimized: no
PDF version: 1.6

Once obtained the values I've to give them as imput for another utility "pdfcrop"
Code:
[bags@TheBagsMan Scrivania]$ pdfcrop --margins '-42.50 -42.50 -42.50 -42.49' '/home/bags/Scrivania/0280.u3_capitolo15.pdf' '/home/bags/Scrivania/0280.u3_capitolo15.pdf'

The problem is that the "--margins" option values should be calculated as
Code:
MediaBox - TrimBox single values (the first -42.5 --> 0.00-42.50; second -42.50 --> 0.00-42.50; third -42.50 --> 680.27-637.77; last -42.49 --> 898.53-856.04)

Id like to have an AWK that recreate the pdfcrop command...
Someone can help me?

thx,
Giovanni
Last edited by radoulov; 03-18-2010 at 08:52 AM.. Reason: zaxxon: use code tags please, ty; radoulov - title fixed
# 2  
Old 03-18-2010
Code:
margins=`pdfinfo -box ’/home/bags/Scrivania/0280.u3_capitolo15.pdf’  |awk '/MediaBox/ {a=$2;b=$3;c=$4;d=$5} /TrimBox/ {print a-$2,b-$3,c-$4,d-$5}'`

pdfcrop --margins "$margins" '/home/bags/Scrivania/0280.u3_capitolo15.pdf' '/home/bags/Scrivania/0280.u3_capitolo15.pdf'

Last edited by rdcwayx; 03-18-2010 at 08:35 AM..
# 3  
Old 03-18-2010
Code:
second -42.50 --> 0.00-42.50; third -42.50 --> 680.27-637.77; last -42.49 --> 898.53-856.04

last two values should be positive.

Code:
file=/home/bags/Scrivania/0280.u3_capitolo15.pdf
pdfcrop --margins "$(pdfinfo -box "$file" |awk '/^MediaBox:/ {m1=$2;m2=$3;m3=$4;m4=$5} /^TrimBox:/{print m1-$2,m2-$3,m3-$4,m4-$5}')" "$file"

# 4  
Old 03-18-2010
Another one. Check the output first without the coloured part:

Code:
#!/bin/sh

file="/home/bags/Scrivania/0280.u3_capitolo15.pdf"

pdfinfo -box "'""$file""'" |	
awk -v f="$file" '
/MediaBox:/{a=$2; b=$3; c=$4; d=$5}
/TrimBox:/{printf("pdfcrop --margins  %.2f %.2f %.2f %.2f \047%s\047 \047%s\047\n", a-$2, b-$3, c-$4, d-$5, f, f)}
' | sh

# 5  
Old 03-18-2010
And another one (untested!):


Code:
awk 'BEGIN {
pdfi = "pdfinfo"
pdfc = "pdfcrop"
for (i = 0; ++i <= ARGC - 1;) {
  pdficmd = pdfi " -box \47" ARGV[i] "\47"
  mb = x
  while ((pdficmd | getline) > 0) {
    /^MediaBox/ && mb = $0
    mb && split(mb, t)
    /^TrimBox/ && pdfccmd = sprintf( "%s --margins \47%.2f %.2f %.2f %.2f\47 \47%s\47 \47%s\47", pdfc,  \
    t[2] - $2, t[3] - $3, t[4] - $4, t[5] - $5, ARGV[i], ARGV[i])
  }
  close(pdficmd); system(pdfccmd); close(pdfccmd)
  }
}' file1.pdf [file2.pdf .. ]

Last edited by radoulov; 03-18-2010 at 09:01 AM..
# 6  
Old 03-18-2010
Quote:
Originally Posted by anchal_khare
Code:
second -42.50 --> 0.00-42.50; third -42.50 --> 680.27-637.77; last -42.49 --> 898.53-856.04

last two values should be positive.

Code:
file=/home/bags/Scrivania/0280.u3_capitolo15.pdf
pdfcrop --margins "$(pdfinfo -box "$file" |awk '/^MediaBox:/ {m1=$2;m2=$3;m3=$4;m4=$5} /^TrimBox:/{print m1-$2,m2-$3,m3-$4,m4-$5}')" "$file"

This works fine Smilie

Thx a lot
Giovanni

---------- Post updated at 01:45 PM ---------- Previous update was at 01:29 PM ----------
Quote:
Originally Posted by gbagagli
This works fine Smilie

Thx a lot
Giovanni
mhhhh
if i use:
Code:
file="/home/bags/Scrivania/0280.u3_capitolo15.pdf"
pdfinfo -box "$file" | awk '/^MediaBox:/ {m2=$2;m3=$3;m4=$4;m5=$5} /^TrimBox:/{print m2-$2 ,m3-$3 ,$4-m4 ,$5-m5}

I obtain right values.
but If I use the whole part:
Code:
file="/home/bags/Scrivania/0280.u3_capitolo15.pdf"
pdfcrop --margins $(pdfinfo -box "$file" | awk '/^MediaBox:/ {m2=$2;m3=$3;m4=$4;m5=$5} /^TrimBox:/{print m2-$2 ,m3-$3 ,$4-m4 ,$5-m5}')" "$file"

I obtain an error Smilie
Code:
PDFCROP 1.23, 2010/01/09 - Copyright (c) 2002-2010 by Heiko Oberdiek.
!!! Error: Input file `' not found!

seems wrong in command expression Smilie

I should have:
Code:
pdfcrop --margins '-42.50 -42.50 -42.50 -42.49' '/home/bags/Scrivania/0280.u3_capitolo15.pdf' '/home/bags/Scrivania/0280.u3_capitolo15.pdf'

Giovanni
# 7  
Old 03-18-2010
You didn't start the quote.
by the way, you can also use any of the solutions.

Code:
pdfcrop --margins "$(pdfinfo -box "$file" | awk '/^MediaBox:/ {m2=$2;m3=$3;m4=$4;m5=$5} /^TrimBox:/{print m2-$2 ,m3-$3 ,$4-m4 ,$5-m5}')" "$file"
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