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Full Discussion: Prevent word splitting with file with spaces in name
Top Forums Shell Programming and Scripting Prevent word splitting with file with spaces in name Post 302681667 by alan on Friday 3rd of August 2012 07:29:43 PM
Old 08-03-2012
Prevent word splitting with file with spaces in name
Hello,

I have a script that "validates" a ZIP file that look like this

Code:
AAA_20120801.zip =>
x~back end~20120801.TXT
y~time in~20120801.TXT
z~heat_chamber~20120801.TXT
AAA_20120801.ctl

My task is to compare its contents (i.e the list of files contained inside) with the control file that is provided inside the ZIP file itself.

Since we've started receiving files with spaces in their name, I prevented the OS from word splitting file names when I view the ZIP's contents like so

Code:
FIRST_Array=(); while read length date time filename; do FIRST_Array+=( "$filename" ); echo -e "$filename"; 
done < <(/usr/bin/unzip -qql AAA_20120801.zip)

When I try to do the same with the control file,

Code:
SECOND_Array=(); while read filename; do SECOND_Array+=( "$filename" ); echo -e "$filename"; done < <(/usr/bin/unzip -p AAA_20120801.zip AAA_20120801.ctl )

SECOND_Array() correctly outputs the file names in the control files but it also output the file sizes listed in the control file
Code:
x~back end~20120801.TXT 2KB
y~time in~20120801.TXT 2KB
z~heat_chamber~20120801.TXT 2KB

and my array comparison (diff -q) fails.

I tried adding this bit of Awk() code to remove the file size field but it brings word splitting back!

Code:
SECOND_Array=(); while read filename; do SECOND_Array+=( "$filename" ); echo -e "$filename"; done < <(/usr/bin/unzip -p AAA_20120801.zip AAA_20120801.ctl |awk '{print $1}')


How can I remove the file size info and prevent word splitting? Any ideas?

Thank you.
Last edited by alan; 08-03-2012 at 09:01 PM..
 

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LEARN ABOUT X11R4

zipgrep

ZIPGREP(1)						      General Commands Manual							ZIPGREP(1)

NAME

       zipgrep - search files in a ZIP archive for lines matching a pattern

SYNOPSIS

       zipgrep [egrep_options] pattern file[.zip] [file(s) ...]  [-x xfile(s) ...]

DESCRIPTION

       zipgrep	will  search  files  within  a ZIP archive for lines matching the given string or pattern.  zipgrep is a shell script and requires
       egrep(1) and unzip(1) to function.  Its output is identical to that of egrep(1).

ARGUMENTS

       pattern
	      The pattern to be located within a ZIP archive.  Any string or regular expression accepted by egrep(1) may be used.  file[.zip] Path
	      of  the  ZIP archive.  (Wildcard expressions for the ZIP archive name are not supported.)  If the literal filename is not found, the
	      suffix .zip is appended.	Note that self-extracting ZIP files are supported, as with any other ZIP archive; just	specify  the  .exe
	      suffix (if any) explicitly.

       [file(s)]
	      An  optional list of archive members to be processed, separated by spaces.  If no member files are specified, all members of the ZIP
	      archive are searched.  Regular expressions (wildcards) may be used to match multiple members:

	      *      matches a sequence of 0 or more characters

	      ?      matches exactly 1 character

	      [...]  matches any single character found inside the brackets; ranges are specified by a beginning character, a hyphen, and an  end-
		     ing character.  If an exclamation point or a caret (`!' or `^') follows the left bracket, then the range of characters within
		     the brackets is complemented (that is, anything except the characters inside the brackets is considered a match).

	      (Be sure to quote any character that might otherwise be interpreted or modified by the operating system.)

       [-x xfile(s)]
	      An optional list of archive members to be excluded from processing.  Since wildcard characters  match  directory	separators  (`/'),
	      this  option  may  be used to exclude any files that are in subdirectories.  For example, ``zipgrep grumpy foo *.[ch] -x */*'' would
	      search for the string ``grumpy'' in all C source files in the main directory of the ``foo'' archive, but none in any subdirectories.
	      Without the -x option, all C source files in all directories within the zipfile would be searched.

OPTIONS

       All options prior to the ZIP archive filename are passed to egrep(1).

SEE ALSO

       egrep(1), unzip(1), zip(1), funzip(1), zipcloak(1), zipinfo(1), zipnote(1), zipsplit(1)

URL

       The Info-ZIP home page is currently at
       http://www.info-zip.org/pub/infozip/
       or
       ftp://ftp.info-zip.org/pub/infozip/ .

AUTHORS

       zipgrep was written by Jean-loup Gailly.

Info-ZIP							   20 April 2009							ZIPGREP(1)
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