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Full Discussion: BASH Regex - get filename tags, labels and descriptions
Top Forums Shell Programming and Scripting BASH Regex - get filename tags, labels and descriptions Post 303024645 by Bishop on Saturday 13th of October 2018 10:07:02 PM
Old 10-13-2018
BASH Regex - get filename tags, labels and descriptions
Hi, I am trying to switch from windows to linux.
I have been using Autohotkey scripts for some little things.
I started writing some bash scripts for NEMO browser in linux mint and I am trying to convert some of AHK scripts but as I am not a programmer. I have a hard time with regex stuff.

What I did is split file path and I got it working ok. -- Directory, FileName, Filename-Without-Extension, Extension

Now every filename may or may not contain [tags], {labels} and (description) in brackets at the end of the filename.
Where I am stuck is regex that works in Autohotkey is not in BASH. I tried sed, awk, but I have no idea what I am doing.

example filename:
multiple.{1}(1)[1] dots.and spaces {labels}(description)[tag1 tag2].txt
filename with only tags [tag1 tag2 tag3].txt

Note:
Tags, labels or description can be any words or numbers, not just what I have in example.
Not every filename will have all 3. Some could have only tags, others only descriptions or labels.

need to split and get this:
shortName = "multiple.{1}(1)[1] dots.and spaces" -- filename without any tags,labels and descriptions
tags = "tag1 tag2" -- tags without brackets
labels = "label" -- labels without brackets
description = "description" -- description without brackets


Original regex from Autohotkey that works in all of my scripts

Code:
; NameNoExt is filename without extension
; get filename only without tags[], labels{} or description() 
ShortName:=RegExReplace(NameNoExt, "\s*(\([^()]+\)|{[}]+|\[[^][]+\])+$")
; Get tags
Tags:=RegExReplace(NameNoExt, ".*\[(.*)?\](?!\s).*$", "$1")
; Get labels
Label:= RegExReplace(NameNoExt, ".*\{(.*)?\}(?!\s).*$", "$1")
; Get description
Description := RegExReplace(NameNoExt, ".*\((.*)?\)(?!\s).*$", "$1")



Here is what I have in BASH .. and it is going nowere..
So to mention again, this is where I need help with regex splitting these tags, labels and descriptions.

Code:
str="multiple.{1}(1)[1] dots.and spaces {lab}(desc)[tag1 tag2].txt"

IFS='
'

NameNoExt=`echo "${str%.*}"`        # for filename with multiple dots

shortName="???"        # get "multiple.{1}(1)[1] dots"

#regexp=".*\[(.*)?\](?!\s).*$"    # from autohotkey
regexp="\[([^)]+)\]+$"
if [[ $NameNoExt =~ $regexp ]]
then 
  TAG="${BASH_REMATCH[1]}"
else 
  TAG="Nothing"
fi
#regexp=".*\{(.*)?\}(?!\s).*$"    # from autohotkey
regexp="\{([^}]+)\}+$"
if [[ $NameNoExt =~ $regexp ]]
then 
  LAB="${BASH_REMATCH[1]}"
else 
  LAB="Nothing"
fi
#regexp=".*\((.*)?\)(?!\s).*$"    # from autohotkey
regexp="\(([^)]+)\)+$"
if [[ $NameNoExt =~ $regexp ]]
then 
  DESC="${BASH_REMATCH[1]}"
else 
  DESC="Nothing"
fi
zenity --info --text "`printf "Input = \"$str\"\n\nNameNoExt = \"$NameNoExt\"\nShort Name  = \"$shortName\"\nTags  = \"$TAG\"\nLabels  = \"$LAB\"\nDescription  = \"$DESC\""`"

I highly appreciate any help with this.
Thank you all.
 

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LEARN ABOUT CENTOS

tracker-tag

tracker-tag(1)							   User Commands						    tracker-tag(1)

NAME

       tracker-tag - Add, remove and list tags.

SYNOPSIS

       tracker-tag [OPTION...] FILE [FILE...]
       tracker-tag [OPTION...] -t [[TAG] [TAG] ...]

DESCRIPTION

       tracker-tag allows the caller add tags, remove tags and list tags by URN or to list all tags and the files associated with them.

       The FILE argument can be either a local path or a URI. It also does not have to be an absolute path.

OPTIONS

       -?, --help
	      Show summary of options.

       -l, --limit=N
	      Limit search to N results. The default is 512.

       -o, --offset=N
	      Offset the search results by N. For example, start at item number 10 in the results. The default is 0.

       -r, --or-operator
	      Use OR for search terms instead of AND (the default)

       -t, --list
	      List  all tags. Results include the number of files associated with that tag and the tag's unique identifier. You can show the files
	      associated with each tag by using --show-files.

	      The TAG arguments are optional. If no TAG argument is specified, all tags are listed. If one or more TAGs are  given,  all  matching
	      tags are listed. For example, this will match any tags named either foo, bar or baz:

	      $ tracker-tag -t foo bar baz

       -s, --show-files
	      Show the files associated with each tag. This option is ONLY available WITH the --list option.

       -a, --add=TAG
	      Add  a tag with the name TAG. If no FILE arguments are specified, the tag is simply created (if it didn'talready exist) and no files
	      are associated with it. Multiple FILE arguments can be specified.

       -d, --delete=TAG
	      Delete a tag with the name TAG. If no FILE arguments are specified, the tag is deleted for ALL files. If FILE arguments  are  speci-
	      fied, only those files have the TAG deleted.

       -e, --description=STRING
	      This option ONLY applies when using --add and provides a description to go with the tag label according to STRING.

       -V, --version
	      Print version.

SEE ALSO

       tracker-store(1), tracker-sparql(1), tracker-search(1), tracker-info(1).

GNU
								     July 2009							    tracker-tag(1)
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