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csv_export.opa
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csv_export.opa
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/*
Copyright © 2011 MLstate
This file is part of OPA.
OPA is free software: you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License, version 3, as published by
the Free Software Foundation.
OPA is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
more details.
You should have received a copy of the GNU Affero General Public License
along with OPA. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Grégoire Makridis, 2011
* @destination public
* @stability unknown
* @category export
*/
/**
* {1 About this module}
*
* Definition of the csv export library
*
* {1 Where should I start ?}
*
* {1 What if I need more?}
*/
import stdlib.core.web.resource
type CsvExport.config =
{csv_separator : string
; csv_header : list(string)
}
CsvExport =
{{
default_config =
{csv_separator = ","
; csv_header = []
}
/**
* Returns a string with csv content from the given list of string list
* @param config configuration to be used
* @param content string list list
*/
to_string(config, content) =
sep = config.csv_separator
header = String.of_list(elt -> elt, sep,config.csv_header)
lines = String.of_list(l -> String.of_list(elt -> elt, sep, l), "\n", content)
header ^ "\n" ^ lines
/**
* Generate a new csv file from the given list of string list
* @param config configuration to be used
* @param content string list list
* @param filename name of the file to generate
*/
to_file(config, content, filename) =
csv_s = to_string(config, content)
%%BslFile.of_string%%(filename, csv_s)
/**
* Generate a new binary resource from the given list of string list
* @param config configuration to be used
* @param content string list list
*/
to_resource(config, content) =
csv_s = to_string(config, content)
Resource.binary(csv_s,"text/csv")
}}