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Formatting data in a raw file by using another mapping file

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# 1  
Old 01-28-2013
Formatting data in a raw file by using another mapping file

Hi All,

i have a requirement where i need to format the input RAW file ( which is CSV) by using another mapping file(also CSV file). basically i am getting feed file with dynamic headers by using mapping file (in that target field is mapped with source filed) i have to convert the raw file into a standard format (target format).

currently i am using ETL tool to achieve this but it's taking long time.
i am trying to write generic shell script for this. could anyone help me in a high level view. i am new to scripting. the target file also be a CSV file.

thanks in advance

# 2  
Old 01-28-2013
Provide sample input and target files.
# 3  
Old 01-28-2013
I suspect we need some idea of what the one csv file's table does to the other csv file. For instance, an associative array can deal with a two column translate. PERL might be a good choice, as it has CSV handlers. Shell can only deal with "well behaved" CSV, e.g., no quoted commas. PERL can draw on many resources to deal with your problem, can call compiled code and has much of the speed of compiled code.
# 4  
Old 01-29-2013
Hi all,

Thanks for the prompt response. Below is the sample data for both files

mapping file:

Header: AU_Template_Field,RawFile_Field


Raw File:


data: abc,xyz,aaa,lny,london,london,abc123

output file:


the out file strcture is standard but raw file structure might vary each time that the reason business is providing mapping file to map the columns for target file.

i hope this explanation would be clear to all.

awaiting for the responses.

Thanks in advance

# 5  
Old 01-29-2013
Put the input keys in a simple array, then for each record, put each field in an associative array keyed to the input name, then write the output using the unchanging ordered list of input names for each output field to fetch the fields from the associative array.
# 6  
Old 02-02-2013

Thanks for the prompt response. if you don't mind could you please provide an sample code for overview so that i can use to rewrite my script.

i am new to the scripting hence i am requesting to provide a sample snippet.

Thanks in advance.

# 7  
Old 02-04-2013
Bash, PERL, awk, c, c++, JAVA, ???

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