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9
.gitignore
vendored
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9
.gitignore
vendored
Normal file
@ -0,0 +1,9 @@
|
||||
# qrprinter .gitignore
|
||||
|
||||
# Temp files
|
||||
*~
|
||||
\#*\#
|
||||
.\#*
|
||||
|
||||
# Build folder
|
||||
build/
|
621
LICENSE
Normal file
621
LICENSE
Normal file
@ -0,0 +1,621 @@
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 3, 29 June 2007
|
||||
|
||||
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
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||||
|
||||
Preamble
|
||||
|
||||
The GNU General Public License is a free, copyleft license for
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|
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The licenses for most software and other practical works are designed
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||||
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|
||||
the GNU General Public License is intended to guarantee your freedom to
|
||||
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|
||||
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|
||||
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|
||||
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|
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|
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When we speak of free software, we are referring to freedom, not
|
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|
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|
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|
||||
Termination of your rights under this section does not terminate the
|
||||
licenses of parties who have received copies or rights from you under
|
||||
this License. If your rights have been terminated and not permanently
|
||||
reinstated, you do not qualify to receive new licenses for the same
|
||||
material under section 10.
|
||||
|
||||
9. Acceptance Not Required for Having Copies.
|
||||
|
||||
You are not required to accept this License in order to receive or
|
||||
run a copy of the Program. Ancillary propagation of a covered work
|
||||
occurring solely as a consequence of using peer-to-peer transmission
|
||||
to receive a copy likewise does not require acceptance. However,
|
||||
nothing other than this License grants you permission to propagate or
|
||||
modify any covered work. These actions infringe copyright if you do
|
||||
not accept this License. Therefore, by modifying or propagating a
|
||||
covered work, you indicate your acceptance of this License to do so.
|
||||
|
||||
10. Automatic Licensing of Downstream Recipients.
|
||||
|
||||
Each time you convey a covered work, the recipient automatically
|
||||
receives a license from the original licensors, to run, modify and
|
||||
propagate that work, subject to this License. You are not responsible
|
||||
for enforcing compliance by third parties with this License.
|
||||
|
||||
An "entity transaction" is a transaction transferring control of an
|
||||
organization, or substantially all assets of one, or subdividing an
|
||||
organization, or merging organizations. If propagation of a covered
|
||||
work results from an entity transaction, each party to that
|
||||
transaction who receives a copy of the work also receives whatever
|
||||
licenses to the work the party's predecessor in interest had or could
|
||||
give under the previous paragraph, plus a right to possession of the
|
||||
Corresponding Source of the work from the predecessor in interest, if
|
||||
the predecessor has it or can get it with reasonable efforts.
|
||||
|
||||
You may not impose any further restrictions on the exercise of the
|
||||
rights granted or affirmed under this License. For example, you may
|
||||
not impose a license fee, royalty, or other charge for exercise of
|
||||
rights granted under this License, and you may not initiate litigation
|
||||
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||
any patent claim is infringed by making, using, selling, offering for
|
||||
sale, or importing the Program or any portion of it.
|
||||
|
||||
11. Patents.
|
||||
|
||||
A "contributor" is a copyright holder who authorizes use under this
|
||||
License of the Program or a work on which the Program is based. The
|
||||
work thus licensed is called the contributor's "contributor version".
|
||||
|
||||
A contributor's "essential patent claims" are all patent claims
|
||||
owned or controlled by the contributor, whether already acquired or
|
||||
hereafter acquired, that would be infringed by some manner, permitted
|
||||
by this License, of making, using, or selling its contributor version,
|
||||
but do not include claims that would be infringed only as a
|
||||
consequence of further modification of the contributor version. For
|
||||
purposes of this definition, "control" includes the right to grant
|
||||
patent sublicenses in a manner consistent with the requirements of
|
||||
this License.
|
||||
|
||||
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||
patent license under the contributor's essential patent claims, to
|
||||
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||
propagate the contents of its contributor version.
|
||||
|
||||
In the following three paragraphs, a "patent license" is any express
|
||||
agreement or commitment, however denominated, not to enforce a patent
|
||||
(such as an express permission to practice a patent or covenant not to
|
||||
sue for patent infringement). To "grant" such a patent license to a
|
||||
party means to make such an agreement or commitment not to enforce a
|
||||
patent against the party.
|
||||
|
||||
If you convey a covered work, knowingly relying on a patent license,
|
||||
and the Corresponding Source of the work is not available for anyone
|
||||
to copy, free of charge and under the terms of this License, through a
|
||||
publicly available network server or other readily accessible means,
|
||||
then you must either (1) cause the Corresponding Source to be so
|
||||
available, or (2) arrange to deprive yourself of the benefit of the
|
||||
patent license for this particular work, or (3) arrange, in a manner
|
||||
consistent with the requirements of this License, to extend the patent
|
||||
license to downstream recipients. "Knowingly relying" means you have
|
||||
actual knowledge that, but for the patent license, your conveying the
|
||||
covered work in a country, or your recipient's use of the covered work
|
||||
in a country, would infringe one or more identifiable patents in that
|
||||
country that you have reason to believe are valid.
|
||||
|
||||
If, pursuant to or in connection with a single transaction or
|
||||
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||
covered work, and grant a patent license to some of the parties
|
||||
receiving the covered work authorizing them to use, propagate, modify
|
||||
or convey a specific copy of the covered work, then the patent license
|
||||
you grant is automatically extended to all recipients of the covered
|
||||
work and works based on it.
|
||||
|
||||
A patent license is "discriminatory" if it does not include within
|
||||
the scope of its coverage, prohibits the exercise of, or is
|
||||
conditioned on the non-exercise of one or more of the rights that are
|
||||
specifically granted under this License. You may not convey a covered
|
||||
work if you are a party to an arrangement with a third party that is
|
||||
in the business of distributing software, under which you make payment
|
||||
to the third party based on the extent of your activity of conveying
|
||||
the work, and under which the third party grants, to any of the
|
||||
parties who would receive the covered work from you, a discriminatory
|
||||
patent license (a) in connection with copies of the covered work
|
||||
conveyed by you (or copies made from those copies), or (b) primarily
|
||||
for and in connection with specific products or compilations that
|
||||
contain the covered work, unless you entered into that arrangement,
|
||||
or that patent license was granted, prior to 28 March 2007.
|
||||
|
||||
Nothing in this License shall be construed as excluding or limiting
|
||||
any implied license or other defenses to infringement that may
|
||||
otherwise be available to you under applicable patent law.
|
||||
|
||||
12. No Surrender of Others' Freedom.
|
||||
|
||||
If conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot convey a
|
||||
covered work so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you may
|
||||
not convey it at all. For example, if you agree to terms that obligate you
|
||||
to collect a royalty for further conveying from those to whom you convey
|
||||
the Program, the only way you could satisfy both those terms and this
|
||||
License would be to refrain entirely from conveying the Program.
|
||||
|
||||
13. Use with the GNU Affero General Public License.
|
||||
|
||||
Notwithstanding any other provision of this License, you have
|
||||
permission to link or combine any covered work with a work licensed
|
||||
under version 3 of the GNU Affero General Public License into a single
|
||||
combined work, and to convey the resulting work. The terms of this
|
||||
License will continue to apply to the part which is the covered work,
|
||||
but the special requirements of the GNU Affero General Public License,
|
||||
section 13, concerning interaction through a network will apply to the
|
||||
combination as such.
|
||||
|
||||
14. Revised Versions of this License.
|
||||
|
||||
The Free Software Foundation may publish revised and/or new versions of
|
||||
the GNU 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
|
||||
Program specifies that a certain numbered version of the GNU General
|
||||
Public License "or any later version" applies to it, you have the
|
||||
option of following the terms and conditions either of that numbered
|
||||
version or of any later version published by the Free Software
|
||||
Foundation. If the Program does not specify a version number of the
|
||||
GNU General Public License, you may choose any version ever published
|
||||
by the Free Software Foundation.
|
||||
|
||||
If the Program specifies that a proxy can decide which future
|
||||
versions of the GNU General Public License can be used, that proxy's
|
||||
public statement of acceptance of a version permanently authorizes you
|
||||
to choose that version for the Program.
|
||||
|
||||
Later license versions may give you additional or different
|
||||
permissions. However, no additional obligations are imposed on any
|
||||
author or copyright holder as a result of your choosing to follow a
|
||||
later version.
|
||||
|
||||
15. Disclaimer of Warranty.
|
||||
|
||||
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
|
||||
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
|
||||
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||
|
||||
16. Limitation of Liability.
|
||||
|
||||
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
||||
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
|
||||
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
|
||||
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
|
||||
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||
SUCH DAMAGES.
|
||||
|
||||
17. Interpretation of Sections 15 and 16.
|
||||
|
||||
If the disclaimer of warranty and limitation of liability provided
|
||||
above cannot be given local legal effect according to their terms,
|
||||
reviewing courts shall apply local law that most closely approximates
|
||||
an absolute waiver of all civil liability in connection with the
|
||||
Program, unless a warranty or assumption of liability accompanies a
|
||||
copy of the Program in return for a fee.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
24
Makefile
Normal file
24
Makefile
Normal file
@ -0,0 +1,24 @@
|
||||
# qrprinter Makefile
|
||||
# Produces .lua files from the .fnl source files
|
||||
|
||||
SRC_DIR = src
|
||||
BUILD_DIR = build
|
||||
|
||||
FENNEL = ./fennel-0.10.0-x86_64
|
||||
|
||||
fnl_files := $(shell find $(SRC_DIR)/ -type f -name '*.fnl')
|
||||
lua_files := $(patsubst $(SRC_DIR)/%.fnl, $(BUILD_DIR)/%.lua, $(fnl_files))
|
||||
|
||||
.PHONY: install clean
|
||||
|
||||
all: $(lua_files)
|
||||
|
||||
install:
|
||||
@echo "Leaving installation up to luarocks..."
|
||||
|
||||
$(BUILD_DIR)/%.lua: $(SRC_DIR)/%.fnl
|
||||
mkdir -p "$(@D)"
|
||||
$(FENNEL) --compile $< > $@
|
||||
|
||||
clean:
|
||||
rm -rf $(BUILD_DIR)
|
60
README.md
Normal file
60
README.md
Normal file
@ -0,0 +1,60 @@
|
||||
# qrprinter
|
||||
|
||||
A wrapper for `libqrencode` that provides an easy way of encoding and printing strings as QR codes from Lua.
|
||||
|
||||
Written in [Fennel](https://fennel-lang.org).
|
||||
|
||||
## Installation
|
||||
|
||||
Install with [luarocks](https://luarocks.org):
|
||||
|
||||
```bash
|
||||
luarocks install qrprinter
|
||||
```
|
||||
|
||||
## Example Usage
|
||||
|
||||
![Example Usage](/assets/demo.png?raw=true)
|
||||
|
||||
## Documentation
|
||||
|
||||
### Encoding
|
||||
|
||||
#### qrprinter.encode_string
|
||||
```
|
||||
qrprinter.encode_string( string )
|
||||
```
|
||||
Encodes `string` into a table representing a QR code.
|
||||
|
||||
Returns a 2D sequential table of true/false values representing black/white QR modules.
|
||||
|
||||
### Printing
|
||||
|
||||
All print functions accept an optional table `options` that may contain two keys:
|
||||
* `invert`: If non-nil, the output colors will be inverted
|
||||
* `padding`: Number of blanks cells to print around the QR code (default 2)
|
||||
|
||||
#### qrprinter.print_qr
|
||||
```
|
||||
qrprinter.print_qr( qr, [options] )
|
||||
```
|
||||
Print `qr` to `stdout` using ANSI escape sequences.\
|
||||
Alias of `qrprinter.print_qr_ansi`.
|
||||
|
||||
#### qrprinter.print_qr_ascii
|
||||
```
|
||||
qrprinter.print_qr_ascii( qr, [options] )
|
||||
```
|
||||
Print `qr` to `stdout` using ASCII characters.
|
||||
|
||||
#### qrprinter.print_qr_ansi
|
||||
```
|
||||
qrprinter.print_qr_ansi( qr, [options] )
|
||||
```
|
||||
Print `qr` to `stdout` using ANSI escape sequences.
|
||||
|
||||
#### qrprinter.print_qr_utf8
|
||||
```
|
||||
qrprinter.print_qr_utf8( qr, [options] )
|
||||
```
|
||||
Print `qr` to `stdout` using UTF8 block elements.
|
BIN
fennel-0.10.0-x86_64
Executable file
BIN
fennel-0.10.0-x86_64
Executable file
Binary file not shown.
32
rockspec/qrprinter-1.0-0.rockspec
Normal file
32
rockspec/qrprinter-1.0-0.rockspec
Normal file
@ -0,0 +1,32 @@
|
||||
package = 'qrprinter'
|
||||
version = '1.0-0'
|
||||
supported_platforms = {'linux'}
|
||||
source = {
|
||||
url = "git@gitlab.com:jessieh/qrprinter",
|
||||
tag = "1.0-0"
|
||||
}
|
||||
description = {
|
||||
summary = "Encode and print strings as QR codes.",
|
||||
detailed = "qrprinter wraps the libqrencode C library to provide an easy way of encoding and printing strings as QR codes from Lua.",
|
||||
homepage = "https://gitlab.com/jessieh/qrprinter",
|
||||
maintainer = "Jessie Hildebrandt <jessieh@jessieh.net>",
|
||||
license = "GPLv3"
|
||||
}
|
||||
dependencies = {
|
||||
"lua >= 5.1",
|
||||
}
|
||||
external_dependencies = {
|
||||
LIBQRENCODE = {
|
||||
header = "qrencode.h"
|
||||
}
|
||||
}
|
||||
build = {
|
||||
type = "make",
|
||||
makefile = "Makefile",
|
||||
install = {
|
||||
lua = {
|
||||
["qrprinter"] = "build/qrprinter.lua",
|
||||
["qrprinter.ffi.qrencode"] = "build/ffi/qrencode.lua"
|
||||
}
|
||||
}
|
||||
}
|
83
src/ffi/qrencode.fnl
Normal file
83
src/ffi/qrencode.fnl
Normal file
@ -0,0 +1,83 @@
|
||||
;; ffi/qrencode.fnl
|
||||
;; Provides function wrappers for the libqrencode C library
|
||||
|
||||
;; -------------------------------------------------------------------------- ;;
|
||||
;; License
|
||||
|
||||
;; Copyright (C) 2021 Jessie Hildebrandt
|
||||
|
||||
;; This program is free software: you can redistribute it and/or modify
|
||||
;; it under the terms of the GNU General Public License as published by
|
||||
;; the Free Software Foundation, either version 3 of the License, or
|
||||
;; (at your option) any later version.
|
||||
|
||||
;; This program 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 General Public License for more details.
|
||||
|
||||
;; You should have received a copy of the GNU General Public License
|
||||
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
|
||||
;; -------------------------------------------------------------------------- ;;
|
||||
;; Dependencies
|
||||
|
||||
(local ffi (require :ffi))
|
||||
|
||||
;; -------------------------------------------------------------------------- ;;
|
||||
;; FFI libraries
|
||||
|
||||
;; ---------------------------------- ;;
|
||||
;; C definitions
|
||||
|
||||
(ffi.cdef "
|
||||
|
||||
/* QR code object */
|
||||
typedef struct {
|
||||
int version;
|
||||
int width;
|
||||
unsigned char *data;
|
||||
} QRcode;
|
||||
|
||||
/* QR code error correction level */
|
||||
typedef enum {
|
||||
QR_ECLEVEL_L = 0,
|
||||
QR_ECLEVEL_M,
|
||||
QR_ECLEVEL_Q,
|
||||
QR_ECLEVEL_H
|
||||
} QRecLevel;
|
||||
|
||||
/* Encode 8-bit string as QR code object */
|
||||
QRcode* QRcode_encodeString8bit( const char *string, int version, QRecLevel level );
|
||||
|
||||
")
|
||||
|
||||
;; ---------------------------------- ;;
|
||||
;; C libraries
|
||||
|
||||
(local ffi_qrencode (ffi.load :qrencode))
|
||||
|
||||
;; -------------------------------------------------------------------------- ;;
|
||||
;; qrencode module
|
||||
|
||||
{
|
||||
|
||||
:encode_string_8_bit
|
||||
(fn [string]
|
||||
"Encode 8-bit string `string` into a table representing a QR code.
|
||||
Wrapper for qrencode's QRcode_encodeString8bit.
|
||||
Returns a 2D sequential table of true/false values representing black/white QR modules."
|
||||
(let [qr_version 0
|
||||
qrcode_table []
|
||||
qrcode (ffi_qrencode.QRcode_encodeString8bit string qr_version :QR_ECLEVEL_L)]
|
||||
(for [row 0 (- qrcode.width 1)]
|
||||
(let [row_table []]
|
||||
(for [column 0 (- qrcode.width 1)]
|
||||
(let [module_index (+ (* row qrcode.width) column)
|
||||
module_data (. qrcode.data module_index)
|
||||
module_black? (= (% module_data 2) 1)]
|
||||
(table.insert row_table module_black?)))
|
||||
(table.insert qrcode_table row_table)))
|
||||
qrcode_table))
|
||||
|
||||
}
|
111
src/qrprinter.fnl
Normal file
111
src/qrprinter.fnl
Normal file
@ -0,0 +1,111 @@
|
||||
;; qrprinter.fnl
|
||||
;; Provides utilities for encoding and printing strings as QR codes
|
||||
|
||||
;; -------------------------------------------------------------------------- ;;
|
||||
;; License
|
||||
|
||||
;; Copyright (C) 2021 Jessie Hildebrandt
|
||||
|
||||
;; This program is free software: you can redistribute it and/or modify
|
||||
;; it under the terms of the GNU General Public License as published by
|
||||
;; the Free Software Foundation, either version 3 of the License, or
|
||||
;; (at your option) any later version.
|
||||
|
||||
;; This program 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 General Public License for more details.
|
||||
|
||||
;; You should have received a copy of the GNU General Public License
|
||||
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
|
||||
;; -------------------------------------------------------------------------- ;;
|
||||
;; Local modules
|
||||
|
||||
(local qrencode (require :qrprinter.ffi.qrencode))
|
||||
|
||||
;; -------------------------------------------------------------------------- ;;
|
||||
;; Helper functions
|
||||
|
||||
;; ---------------------------------- ;;
|
||||
;; Padding
|
||||
|
||||
(fn generate_sequence [element size]
|
||||
"Return a sequential table of `element` with length `size`."
|
||||
(let [row []]
|
||||
(for [_ 1 size]
|
||||
(table.insert row element))
|
||||
row))
|
||||
|
||||
(fn pad_sequence [sequence element amount]
|
||||
"Return a sequential table containing `sequence` padded with `amount` count of `element`."
|
||||
(let [padded_sequence [(unpack sequence)]]
|
||||
(for [_ 1 amount]
|
||||
(table.insert padded_sequence 1 element)
|
||||
(table.insert padded_sequence element))
|
||||
padded_sequence))
|
||||
|
||||
(fn pad_qr [qr amount]
|
||||
"Return 2D sequential table `qr` padded with `amount` count of white modules."
|
||||
(let [blank_row (generate_sequence false (length qr))
|
||||
padded_qr (pad_sequence qr blank_row amount)]
|
||||
(icollect [_ row (ipairs padded_qr)]
|
||||
(pad_sequence row false amount))))
|
||||
|
||||
;; ---------------------------------- ;;
|
||||
;; Printing
|
||||
|
||||
(fn print_qr [qr black_cell white_cell ?options]
|
||||
"Print 2D sequential table `qr` to stdout.
|
||||
Black modules will be printed as `black_cell`, and white modules will be printed as `white_cell`.
|
||||
`?options` is optional and may contain two keys:
|
||||
- invert: If non-nil, the output colors will be inverted.
|
||||
- padding: Amount of blank modules to print around QR code. If nil, defaults to 2."
|
||||
(let [invert? (?. ?options :invert)
|
||||
padding (or (?. ?options :padding) 2)
|
||||
padded_qr (pad_qr qr padding)
|
||||
[black_cell white_cell] (if invert? [white_cell black_cell] [black_cell white_cell])
|
||||
row_strings (icollect [_ row (ipairs padded_qr)]
|
||||
(accumulate [row_string ""
|
||||
_ module_black? (ipairs row)]
|
||||
(.. row_string (if module_black? black_cell white_cell))))]
|
||||
(print (table.concat row_strings "\n"))))
|
||||
|
||||
;; -------------------------------------------------------------------------- ;;
|
||||
;; Module functions
|
||||
|
||||
;; Some Fennel naming conventions are eschewed here because these are Lua-facing library functions
|
||||
;; and the names would be mangled during compilation.
|
||||
;; e.g. ?options -> _3foptions, invert? -> invert_3f
|
||||
|
||||
(fn encode_string [string]
|
||||
"Encode string `string` into a table representing a QR code.
|
||||
Returns a 2D sequential table of true/false values representing black/white QR modules."
|
||||
(qrencode.encode_string_8_bit string))
|
||||
|
||||
(fn print_qr_ascii [qr options]
|
||||
"Print QR code `qr` to stdout using ASCII characters."
|
||||
(let [black_cell " "
|
||||
white_cell "##"]
|
||||
(print_qr qr black_cell white_cell options)))
|
||||
|
||||
(fn print_qr_ansi [qr options]
|
||||
"Print QR code `qr` to stdout using ANSI escape sequences."
|
||||
(let [black_cell "\27[40m \27[0m"
|
||||
white_cell "\27[47m \27[0m"]
|
||||
(print_qr qr black_cell white_cell options)))
|
||||
|
||||
(fn print_qr_utf8 [qr options]
|
||||
"Print QR code `qr` to stdout using UTF8 block elements."
|
||||
(let [black_cell " "
|
||||
white_cell "██"]
|
||||
(print_qr qr black_cell white_cell options)))
|
||||
|
||||
;; -------------------------------------------------------------------------- ;;
|
||||
;; Provide qrprinter module
|
||||
|
||||
{: encode_string
|
||||
: print_qr_ascii
|
||||
: print_qr_ansi
|
||||
: print_qr_utf8
|
||||
:print_qr print_qr_ansi}
|
Loading…
Reference in New Issue
Block a user