diff --git a/Makefile b/Makefile
index 65f099c..84494aa 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ endif
all: build
-build: retropikzel/${LIBRARY}/LICENSE retropikzel/${LIBRARY}/VERSION
+build: retropikzel/${LIBRARY}/LICENSE retropikzel/${LIBRARY}/VERSION retropikzel/${LIBRARY}/README.md
echo "$$(cat retropikzel/${LIBRARY}/README.md)" > ${README}
snow-chibi package --version=${VERSION} --authors=${AUTHOR} --doc=${README} --description="${DESCRIPTION}" ${LIBRARY_FILE}
diff --git a/retropikzel/csv.scm b/retropikzel/csv.scm
new file mode 100644
index 0000000..4471a01
--- /dev/null
+++ b/retropikzel/csv.scm
@@ -0,0 +1,150 @@
+(define string-util-replace-count
+ (lambda (text replace replace-with count)
+ (letrec* ((inner-count 0)
+ (looper (lambda (result text)
+ (if (or (string=? replace "")
+ (string=? text "")
+ (= (string-length text) 0)
+ (= inner-count count))
+ (string-append result text)
+ (if (and (char=? (string-ref replace 0) (string-ref text 0))
+ (>= (string-length text) (string-length replace))
+ (string=? (string-copy text 0 (string-length replace))
+ replace))
+ (begin
+ (set! inner-count (+ inner-count 1))
+ (looper (string-append result replace-with)
+ (string-copy text (string-length replace))))
+ (looper (string-append result (string-copy text 0 1))
+ (string-copy text 1)))))))
+ (looper "" text))))
+
+(define string-util-contains?
+ (lambda (haystack needle)
+ (if (string=? needle "")
+ #f
+ (if (string=? haystack
+ (string-util-replace-count haystack
+ needle
+ ""
+ 1))
+ #f
+ #t))))
+
+(define string-util-replace-all
+ (lambda (text replace replace-with)
+ (letrec ((looper (lambda (result text)
+ (if (or (string=? replace "")
+ (string=? text "")
+ (= (string-length text) 0))
+ result
+ (if (and (char=? (string-ref replace 0) (string-ref text 0))
+ (>= (string-length text) (string-length replace))
+ (string=? (string-copy text 0 (string-length replace))
+ replace))
+ (looper (string-append result replace-with)
+ (string-copy text (string-length replace)))
+ (looper (string-append result (string-copy text 0 1))
+ (string-copy text 1)))))))
+ (looper "" text))))
+
+(define read-until-char
+ (lambda (result port char)
+ (let ((c (read-char port)))
+ (cond
+ ((or (eof-object? c)
+ (eof-object? (peek-char port)))
+ (list->string (reverse result)))
+ ((and (not (char=? char #\"))
+ (char=? c #\return)
+ (char=? (peek-char port) #\newline))
+ (list->string (reverse result)))
+ ((and (not (char=? char #\"))
+ (char=? (peek-char port) #\newline))
+ (list->string (reverse (cons c result))))
+ (else
+ ; When reading inside " read "" as "
+ (if (and (char=? char #\")
+ (char=? c #\")
+ (char=? (peek-char port) #\"))
+ (read-until-char (cons (read-char port) result) port char)
+ (if (char=? c char)
+ (list->string (reverse result))
+ (read-until-char (cons c result) port char))))))))
+1
+(define csv->list ;-> obj
+ #|
+ Reads csv from given port and transforms it into list of list.
+
+ Each row is a list inside list of rows.
+ |#
+ (lambda (delimiter port)
+ (csv->list-loop (list) (list) delimiter port)))
+
+(define csv->list-loop
+ (lambda (result line-list delimiter port)
+ (let* ((next-char (peek-char port)))
+ (if (eof-object? next-char)
+ (reverse result)
+ (csv->list-loop
+ (if (char=? next-char #\newline)
+ (begin
+ (read-char port)
+ (set! result (cons (reverse line-list) result))
+ (set! line-list (list))
+ result)
+ result)
+ (cond
+ ((char=? next-char #\return)
+ (read-char port)
+ line-list)
+ ((char=? next-char delimiter)
+ (read-char port)
+ line-list)
+ ((char=? next-char #\")
+ (read-char port)
+ (cons (read-until-char (list) port #\") line-list))
+ (else (cons (read-until-char (list) port delimiter) line-list)))
+ delimiter port)))))
+
+(define (csv-from-list delimiter rows) ;-> string
+ #| Transform list of lists into CSV string |#
+ (let ((item-display
+ (lambda (item)
+ (let ((write? #f))
+ (when (and (string? item)
+ (string-util-contains? item (string delimiter)))
+ (set! write? #t))
+ (when (and (string? item)
+ (string-util-contains? item "\""))
+ (set! item (string-util-replace-all item "\"" "\"\""))
+ (set! write? #t))
+ (when (and (string? item)
+ (= (string-length item) 0))
+ (set! write? #t))
+ (if write?
+ (write item)
+ (display item))))))
+ (parameterize
+ ((current-output-port
+ (open-output-string)))
+ (for-each
+ (lambda (row)
+ (let ((index -1))
+ (for-each
+ (lambda (item)
+ (set! index (+ index 1))
+ (cond ((= index 0) (item-display item))
+ (else (display ",")
+ (item-display item))))
+ row))
+ (newline))
+ rows)
+ (get-output-string (current-output-port)))))
+
+(define csv-file->list
+ (lambda (character file-path)
+ (call-with-input-file
+ file-path
+ (lambda (csv-file-input-port)
+ (csv->list character csv-file-input-port)))))
diff --git a/retropikzel/csv.sld b/retropikzel/csv.sld
new file mode 100644
index 0000000..c0b9e34
--- /dev/null
+++ b/retropikzel/csv.sld
@@ -0,0 +1,10 @@
+(define-library
+ (retropikzel csv)
+ (import
+ (scheme base)
+ (scheme read)
+ (scheme char)
+ (scheme write)
+ (scheme file))
+ (export csv->list csv-from-list csv-file->list)
+ (include "csv.scm"))
diff --git a/retropikzel/csv/LICENSE b/retropikzel/csv/LICENSE
new file mode 100644
index 0000000..0a04128
--- /dev/null
+++ b/retropikzel/csv/LICENSE
@@ -0,0 +1,165 @@
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+ This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+ 0. Additional Definitions.
+
+ As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+ "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+ An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+ A "Combined Work" is a work produced by combining or linking an
+Application with the Library. The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+ The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+ The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+ 1. Exception to Section 3 of the GNU GPL.
+
+ You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+ 2. Conveying Modified Versions.
+
+ If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+ a) under this License, provided that you make a good faith effort to
+ ensure that, in the event an Application does not supply the
+ function or data, the facility still operates, and performs
+ whatever part of its purpose remains meaningful, or
+
+ b) under the GNU GPL, with none of the additional permissions of
+ this License applicable to that copy.
+
+ 3. Object Code Incorporating Material from Library Header Files.
+
+ The object code form of an Application may incorporate material from
+a header file that is part of the Library. You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+ a) Give prominent notice with each copy of the object code that the
+ Library is used in it and that the Library and its use are
+ covered by this License.
+
+ b) Accompany the object code with a copy of the GNU GPL and this license
+ document.
+
+ 4. Combined Works.
+
+ You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+ a) Give prominent notice with each copy of the Combined Work that
+ the Library is used in it and that the Library and its use are
+ covered by this License.
+
+ b) Accompany the Combined Work with a copy of the GNU GPL and this license
+ document.
+
+ c) For a Combined Work that displays copyright notices during
+ execution, include the copyright notice for the Library among
+ these notices, as well as a reference directing the user to the
+ copies of the GNU GPL and this license document.
+
+ d) Do one of the following:
+
+ 0) Convey the Minimal Corresponding Source under the terms of this
+ License, and the Corresponding Application Code in a form
+ suitable for, and under terms that permit, the user to
+ recombine or relink the Application with a modified version of
+ the Linked Version to produce a modified Combined Work, in the
+ manner specified by section 6 of the GNU GPL for conveying
+ Corresponding Source.
+
+ 1) Use a suitable shared library mechanism for linking with the
+ Library. A suitable mechanism is one that (a) uses at run time
+ a copy of the Library already present on the user's computer
+ system, and (b) will operate properly with a modified version
+ of the Library that is interface-compatible with the Linked
+ Version.
+
+ e) Provide Installation Information, but only if you would otherwise
+ be required to provide such information under section 6 of the
+ GNU GPL, and only to the extent that such information is
+ necessary to install and execute a modified version of the
+ Combined Work produced by recombining or relinking the
+ Application with a modified version of the Linked Version. (If
+ you use option 4d0, the Installation Information must accompany
+ the Minimal Corresponding Source and Corresponding Application
+ Code. If you use option 4d1, you must provide the Installation
+ Information in the manner specified by section 6 of the GNU GPL
+ for conveying Corresponding Source.)
+
+ 5. Combined Libraries.
+
+ You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+ a) Accompany the combined library with a copy of the same work based
+ on the Library, uncombined with any other library facilities,
+ conveyed under the terms of this License.
+
+ b) Give prominent notice with the combined library that part of it
+ is a work based on the Library, and explaining where to find the
+ accompanying uncombined form of the same work.
+
+ 6. Revised Versions of the GNU Lesser General Public License.
+
+ The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+ If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
diff --git a/retropikzel/csv/README.html b/retropikzel/csv/README.html
new file mode 100644
index 0000000..87ce5ce
--- /dev/null
+++ b/retropikzel/csv/README.html
@@ -0,0 +1 @@
+CSV library for R7RS Schemes.
diff --git a/retropikzel/csv/README.md b/retropikzel/csv/README.md
new file mode 100644
index 0000000..f4a1561
--- /dev/null
+++ b/retropikzel/csv/README.md
@@ -0,0 +1,2 @@
+CSV library for R7RS Schemes.
+
diff --git a/retropikzel/csv/VERSION b/retropikzel/csv/VERSION
new file mode 100644
index 0000000..3eefcb9
--- /dev/null
+++ b/retropikzel/csv/VERSION
@@ -0,0 +1 @@
+1.0.0