csvp

README

csvp

Print selected parts of CSV from each FILE to standard output.

$ cat items.csv
name,price,quantity
Apple,60,20
Grapes,140,8
Pineapple,400,2
Orange,50,14

$ cat items.csv | csvp -h=price,quantity
60	20
140	8
400	2
50	14

Usage

$ csvp [OPTION]... [FILE]...
Print selected parts of CSV from each FILE to standard output.

Options:
  -i, --indexes=LIST
                 select only these indexes
  -h, --headers=LIST
                 select only these headers
  -t, --tsv
                 equivalent to -d'\t'
  -d, --delimiter=DELIM
                 use DELIM instead of comma for field delimiter
  -D, --output-delimiter=STRING
                 use STRING as the output delimiter (default: \t)
  --help
                 display this help text and exit
  --version
                 output version information and exit

Installation

go get

go get github.com/kusabashira/csvp

Options

--help

Display the usage and exit.

--version

Output the version of csvp.

-i, --indexes=LIST

Select only specified indexes.

Indexes separated by a ,.

Each index starts from 1, they are specified by the index or range.

# select only second column, and from fourth column to sixth column
csvp --indexes=2,4-6

# select only ninth column, seventh column, and up to third column
csvp --indexes=9,7,-3

index

index is a single index.

# select only second column
csvp --indexes=2

# select only forth column, first column, and second column
csvp --indexes=4,1,2

range

range are indexes from first to last. It starts from the head if omitted first, It continues until the end if omitted last.

# select only from the second column to the fourth column
csvp --indexes=2-4

# select only third column later
csvp --indexes=3-

# select only up to third column
csvp --indexes=-3

# select all columns
csvp --indexes=-

syntax of indexes list

Here is the syntax of indexes in extended BNF.

indexes = ( index | range ) , { "," , ( index | range ) }
range   = [ { digit } ] , "-" , [ { digit } ]
index   = { digit }

-h, --headers=LIST

Select only specified headers.

Headers separated by a ,.

# select only column of name
csvp --headers=name

# select only column of name, column of price, and column of quantity
csvp --indexes=name,price,quantity

# select only columns of "foo,bar" and columns of "baz"
csvp --indexes="foo\,bar,baz"

syntax of headers list

Here is the syntax of headers in extended BNF.

headers = header , { "," , header }
header  = { letter | "\," }

letter is a unicode character other than ,.

-t, -tsv

Change ths input delimiter to \t. equivalent to -d'\t'.

-d, --delimiter=DELIM

Change the input delimiter to DELIM. DELIM is a unicode character.

# Read TSV
csvp --delimiter='\t'

# Read SSV
csvp --delimiter=' '

-D, --output-delimiter=STRING

Change the output delimiter to STRING. STRING is unicode characters.

# Outputs with a slash delimited
csvp --output-delimiter=/

# Outputs with a "::" delimited
csvp --output-delimiter=::

License

MIT License

Author

kusabashira kusabashira227@gmail.com