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"""Command-line interface.

"""

from __future__ import print_function

from __future__ import unicode_literals

import os

import sys

import subprocess

import tempfile

from common import assert_equal

SAMPLE_SIMPLE_FORMAT = "\n".join(

[

"----- ------ -------------",

"Sun 696000 1.9891e+09",

"Earth 6371 5973.6",

"Moon 1737 73.5",

"Mars 3390 641.85",

"----- ------ -------------",

]

)

SAMPLE_SIMPLE_FORMAT_WITH_HEADERS = "\n".join(

[

"Planet Radius Mass",

"-------- -------- -------------",

"Sun 696000 1.9891e+09",

"Earth 6371 5973.6",

"Moon 1737 73.5",

"Mars 3390 641.85",

]

)

SAMPLE_GRID_FORMAT_WITH_HEADERS = "\n".join(

[

"+----------+----------+---------------+",

"| Planet | Radius | Mass |",

"+==========+==========+===============+",

"| Sun | 696000 | 1.9891e+09 |",

"+----------+----------+---------------+",

"| Earth | 6371 | 5973.6 |",

"+----------+----------+---------------+",

"| Moon | 1737 | 73.5 |",

"+----------+----------+---------------+",

"| Mars | 3390 | 641.85 |",

"+----------+----------+---------------+",

]

)

SAMPLE_GRID_FORMAT_WITH_DOT1E_FLOATS = "\n".join(

[

"+-------+--------+---------+",

"| Sun | 696000 | 2.0e+09 |",

"+-------+--------+---------+",

"| Earth | 6371 | 6.0e+03 |",

"+-------+--------+---------+",

"| Moon | 1737 | 7.4e+01 |",

"+-------+--------+---------+",

"| Mars | 3390 | 6.4e+02 |",

"+-------+--------+---------+",

]

)

def sample_input(sep=" ", with_headers=False):

headers = sep.join(["Planet", "Radius", "Mass"])

rows = [

sep.join(["Sun", "696000", "1.9891e9"]),

sep.join(["Earth", "6371", "5973.6"]),

sep.join(["Moon", "1737", "73.5"]),

sep.join(["Mars", "3390", "641.85"]),

]

all_rows = ([headers] + rows) if with_headers else rows

table = "\n".join(all_rows)

return table

def run_and_capture_stdout(cmd, input=None):

x = subprocess.Popen(

cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE

)

input_buf = input.encode() if input else None

out, err = x.communicate(input=input_buf)

out = out.decode("utf-8")

if x.returncode != 0:

raise IOError(err)

return out

class TemporaryTextFile(object):

def __init__(self):

self.tmpfile = None

def __enter__(self):

self.tmpfile = tempfile.NamedTemporaryFile(

"w+", prefix="tabulate-test-tmp-", delete=False

)

return self.tmpfile

def __exit__(self, exc_type, exc_val, exc_tb):

if self.tmpfile:

self.tmpfile.close()

os.unlink(self.tmpfile.name)

def test_script_from_stdin_to_stdout():

"""Command line utility: read from stdin, print to stdout"""

cmd = [sys.executable, "tabulate.py"]

out = run_and_capture_stdout(cmd, input=sample_input())

expected = SAMPLE_SIMPLE_FORMAT

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_from_file_to_stdout():

"""Command line utility: read from file, print to stdout"""

with TemporaryTextFile() as tmpfile:

tmpfile.write(sample_input())

tmpfile.seek(0)

cmd = [sys.executable, "tabulate.py", tmpfile.name]

out = run_and_capture_stdout(cmd)

expected = SAMPLE_SIMPLE_FORMAT

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_from_file_to_file():

"""Command line utility: read from file, write to file"""

with TemporaryTextFile() as input_file:

with TemporaryTextFile() as output_file:

input_file.write(sample_input())

input_file.seek(0)

cmd = [

sys.executable,

"tabulate.py",

"-o",

output_file.name,

input_file.name,

]

out = run_and_capture_stdout(cmd)

# check that nothing is printed to stdout

expected = ""

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

# check that the output was written to file

output_file.seek(0)

out = output_file.file.read()

expected = SAMPLE_SIMPLE_FORMAT

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_header_option():

"""Command line utility: -1, --header option"""

for option in ["-1", "--header"]:

cmd = [sys.executable, "tabulate.py", option]

raw_table = sample_input(with_headers=True)

out = run_and_capture_stdout(cmd, input=raw_table)

expected = SAMPLE_SIMPLE_FORMAT_WITH_HEADERS

print(out)

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_sep_option():

"""Command line utility: -s, --sep option"""

for option in ["-s", "--sep"]:

cmd = [sys.executable, "tabulate.py", option, ","]

raw_table = sample_input(sep=",")

out = run_and_capture_stdout(cmd, input=raw_table)

expected = SAMPLE_SIMPLE_FORMAT

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_floatfmt_option():

"""Command line utility: -F, --float option"""

for option in ["-F", "--float"]:

cmd = [sys.executable, "tabulate.py", option, ".1e", "--format", "grid"]

raw_table = sample_input()

out = run_and_capture_stdout(cmd, input=raw_table)

expected = SAMPLE_GRID_FORMAT_WITH_DOT1E_FLOATS

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_format_option():

"""Command line utility: -f, --format option"""

for option in ["-f", "--format"]:

cmd = [sys.executable, "tabulate.py", "-1", option, "grid"]

raw_table = sample_input(with_headers=True)

out = run_and_capture_stdout(cmd, input=raw_table)

expected = SAMPLE_GRID_FORMAT_WITH_HEADERS

print(out)

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())