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Full Discussion: Passing variables to a sed function
Top Forums Shell Programming and Scripting Passing variables to a sed function Post 302908667 by richardsantink on Wednesday 9th of July 2014 12:18:12 PM
Old 07-09-2014
Passing variables to a sed function
Hi everyone,
I've re-written some of our scripts to use more functions and I've run into a situation where passing a variable to a sed function does not work. My function is a one-liner sed command as follows:

Code:
function StringSub()
{
sed -i "${1}/${2}/${3}/${4}" ${5}
}

Where ${1} through ${4} represent command/ pattern/ replacement/ flag/ respectively. ${5} is used to pass the filename.
It may seem like overkill but I am hoping I can take the five parameters from a .csv file to pass to the function, down the road once this is developed more.

Code:
echo "Enter the two-digit month, and the four-digit year for the report, then press enter."
read tidyMonth tidyYear
#use the values to create a date column, always set to the first of the month.
awk -v column=1 -v value="${tidyMonth}/01/${tidyYear}" '
BEGIN {
FS = OFS = ",";
}
{
for (i=NF +1; i > column; i-- ) {
$i = $(i-1);
}
$i = value;
print $0;
}
' originalSource.csv > mysource.csv
#Next, rename first row, first field to 'Date'
StringSub '1s' '${tidyMonth}\/01\/${tidyYear}' 'Date' 'g' 'mysource.csv'
StringSub '1s' 'Video' 'Product+Video' '' 'dateColumnAdded-02.csv'

The file mysource.csv takes the form:
Code:
06/01/2014,Video,Views
06/01/2014,video_title_1,34
06/01/2014,video_title_6,12
06/01/2014,video_title_3,102

Basically the StringSub function works, until I have a variable to pass that I suspect has slashes in it. Is it something I'm doing wrong in my expansion, or lack thereof? The second call of StringSub which renames 'Video' to 'Product+Video' works without any issue.
This is what I end up with:
Code:
06/01/2014,Product+Video,Views
06/01/2014,video_title_1,34
06/01/2014,video_title_6,12
06/01/2014,video_title_3,102

Last edited by Corona688; 07-09-2014 at 02:06 PM.. Reason: Use [code], not [icode] please
 

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OCR4GAMERA(1)															     OCR4GAMERA(1)

NAME

       ocr4gamera - OCR system using the Gamera framework

USAGE

       ocr4gamera -x <traindata> [options] <imagefile>

OPTIONS

       -v <int>, --verbosity=<int>
	      Set verbosity level to <int>.  Possible values are 0 (default): silent operation; 1:  information on progress; >2: segmentation info
	      is written to PNG files with prefix debug_.

       -h, --help
	      Display help and exit.

       -d, --deskew
	      Do a skew correction (recommended).

       -f, --filter
	      Filter out very large (images) and very small components (noise).

       -a, --automatic-group
	      Autogroup glyphs with classifier.

       -x <file>, --xmlfile=<file>
	      Read training data from <file>.

       -o <xml>, --output=<xml>
	      Write recognized text to file <xml> (otherwise it is written to stdout).

       -c <csv>, --extra_chars_csvfile=<csv>
	      Read additional class name conversions from file <csv>.  <csv> must contain one conversion per line.

       -R <rules>, --heuristic_rules=<rules>
	      Apply heuristic rules <rules> for disambiguation of some chars.  <rules> can be roman (default) or none (for no rules).

       -D, --dictionary-correction
	      Correct words using a dictionary (requires aspell or ispell).

       -L <lang>, --dictionary-language=<lang>
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       -e <int>, --edit-distance=<int>
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																     OCR4GAMERA(1)
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