Spanner
A command line toolset.
qr
generate
usage: spnr qr generate [-h] [-s STRING | -f [FILE]] [-S | -o [OUTPUT_FILE]]
optional arguments:
-h, --help show this help message and exit
-s STRING, --string STRING
content
-f [FILE], --file [FILE]
read content from the file, default stdin
-S, --screen show the qrcode on the screen
-o [OUTPUT_FILE], --output-file [OUTPUT_FILE]
output qrcode to a file, default stdout
Examples
Generate a qrcode with the specific string to the stdout:
$ spnr qr gen -s https://pypi.org/project/spnr
to the screen:
$ spnr qr gen -s https://pypi.org/project/spnr -S
to a picture file:
$ spnr qr gen -s https://pypi.org/project/spnr -o qr.png
scan
usage: spnr qr scan [-h] [-c | -s | -f FILE]
optional arguments:
-h, --help show this help message and exit
-c, --camera scan a qrcode from the camera
-s, --screen scan a qrcode from the screen
-f FILE, --file FILE scan a qrcode from the picture file
Examples
Recognize qrcodes from the screen:
$ spnr qr scan -s
from the camera:
$ spnr qr scan -c
from a picture file:
$ spnr qr scan -f path/to/qr.png
table
usage: spnr table [-h] [-m MATRIX | -f [FILE]] [--row-span {head,none,all}]
optional arguments:
-h, --help show this help message and exit
-m MATRIX, --matrix MATRIX
a matrix literal
-f [FILE], --file [FILE]
read a matrix literal or csv from the file, default stdin
--row-span {head,none,all}
row span mode
Examples
Print a table from a matrix literal:
$ spnr table -m "[['Name', 'Age'], ['Alice', 15], ['Bob', 12]]"
from a csv file:
$ spnr table -f some.csv
json
usage: spnr json [-h] [-s STRING | -f [FILE]] [-i INDENT]
optional arguments:
-h, --help show this help message and exit
-s STRING, --string STRING
a json string
-f [FILE], --file [FILE]
read the json from a file, default stdin
-i INDENT, --indent INDENT
indent
Examples
Format a json string to indent 4 space:
$ spnr json -s '{"name": "Alice", "age": 15}' -i 4
hash
usage: spnr hash [-h] [-s STRING | -f [FILE]] -a ALG
optional arguments:
-h, --help show this help message and exit
-s STRING, --string STRING
hash a string
-f [FILE], --file [FILE]
hash a file, default stdin
-a ALG, --alg ALG hash algorithm
Examples
Hash a string:
$ spnr hash -s 'Hello World' -a sha256
Hash a file:
$ spnr hash -f path/to/somefile -a md5
code
usage: spnr code [-h] (-e ENCODE | -d DECODE) -m {base64,url}
optional arguments:
-h, --help show this help message and exit
-e ENCODE, --encode ENCODE
encode a string
-d DECODE, --decode DECODE
decode a string
-m {base64,url}, --mode {base64,url}
code mode
Examples
Decode a url:
$ spnr code -d https%3A//pypi.org/project/spnr -m url
time
usage: spnr time [-h] [-t TIMESTAMP | -T TIME] [-f FORMAT] [-u]
optional arguments:
-h, --help show this help message and exit
-t TIMESTAMP, --timestamp TIMESTAMP
timestamp
-T TIME, --time TIME time in string
-f FORMAT, --format FORMAT
time format
-u, --utc use utc time
Examples
Print current time and timestamp:
$ spnr time
timestamp to time string:
$ spnr time -t 3376656000
time string to timestamp:
$ spnr time -T '2077-1-1 00:00:00' -f '%Y-%m-%d %H:%M:%S'