mirror of
https://github.com/chubin/wttr.in
synced 2024-12-28 12:43:07 +00:00
278 lines
7.1 KiB
Python
278 lines
7.1 KiB
Python
#!/usr/bin/python
|
||
#vim: encoding=utf-8
|
||
|
||
import sys
|
||
import os
|
||
import re
|
||
import time
|
||
|
||
"""
|
||
This module is used to generate png-files for wttr.in queries.
|
||
The only exported function is:
|
||
|
||
make_wttr_in_png(filename)
|
||
|
||
in filename (in the shortname) is coded the weather query.
|
||
The function saves the weather report in the file and returns None.
|
||
"""
|
||
|
||
import requests
|
||
|
||
from PIL import Image, ImageFont, ImageDraw
|
||
import pyte.screens
|
||
|
||
# downloaded from https://gist.github.com/2204527
|
||
# described/recommended here:
|
||
#
|
||
# http://stackoverflow.com/questions/9868792/find-out-the-unicode-script-of-a-character
|
||
#
|
||
import unicodedata2
|
||
|
||
MYDIR = os.path.abspath(os.path.dirname( os.path.dirname('__file__')))
|
||
PNG_CACHE = os.path.join(MYDIR, "cache/png")
|
||
|
||
COLS = 180
|
||
ROWS = 100
|
||
|
||
CHAR_WIDTH = 7
|
||
CHAR_HEIGHT = 14
|
||
|
||
# How to find font for non-standard scripts:
|
||
#
|
||
# $ fc-list :lang=ja
|
||
|
||
FONT_SIZE = 12
|
||
FONT_CAT = {
|
||
'default': "/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf",
|
||
'Cyrillic': "/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf",
|
||
'Greek': "/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf",
|
||
'Han': "/usr/share/fonts/truetype/motoya-l-cedar/MTLc3m.ttf",
|
||
'Hiragana': "/usr/share/fonts/truetype/motoya-l-cedar/MTLc3m.ttf",
|
||
}
|
||
|
||
def color_mapping(color):
|
||
"""
|
||
Convert pyte color to PIL color
|
||
"""
|
||
if color == 'default':
|
||
return 'lightgray'
|
||
if color in ['green', 'black', 'cyan', 'blue', 'brown']:
|
||
return color
|
||
try:
|
||
return (int(color[0:2], 16), int(color[2:4], 16), int(color[4:6], 16))
|
||
except:
|
||
# if we do not know this color and it can not be decoded as RGB,
|
||
# print it and return it as it is (will be displayed as black)
|
||
# print color
|
||
return color
|
||
return color
|
||
|
||
def strip_buf(buf):
|
||
"""
|
||
Strips empty spaces from behind and from the right side.
|
||
(from the right side is not yet implemented)
|
||
"""
|
||
def empty_line(line):
|
||
"Returns True if the line consists from spaces"
|
||
return all(x.data == ' ' for x in line)
|
||
|
||
def line_len(line):
|
||
"Returns len of the line excluding spaces from the right"
|
||
|
||
last_pos = len(line)
|
||
while last_pos > 0 and line[last_pos-1].data == ' ':
|
||
last_pos -= 1
|
||
return last_pos
|
||
|
||
number_of_lines = 0
|
||
for line in buf[::-1]:
|
||
if not empty_line(line):
|
||
break
|
||
number_of_lines += 1
|
||
|
||
buf = buf[:-number_of_lines]
|
||
|
||
max_len = max(line_len(x) for x in buf)
|
||
buf = [line[:max_len] for line in buf]
|
||
|
||
return buf
|
||
|
||
def script_category(char):
|
||
"""
|
||
Returns category of a Unicode character
|
||
Possible values:
|
||
default, Cyrillic, Greek, Han, Hiragana
|
||
"""
|
||
cat = unicodedata2.script_cat(char)[0]
|
||
if char == u'：':
|
||
return 'Han'
|
||
if cat in ['Latin', 'Common']:
|
||
return 'default'
|
||
else:
|
||
return cat
|
||
|
||
def gen_term(filename, buf):
|
||
buf = strip_buf(buf)
|
||
cols = len(buf[0])
|
||
rows = len(buf)
|
||
|
||
image = Image.new('RGB', (cols * CHAR_WIDTH, rows * CHAR_HEIGHT))
|
||
|
||
buf = buf[-ROWS:]
|
||
|
||
draw = ImageDraw.Draw(image)
|
||
font = {}
|
||
for cat in FONT_CAT:
|
||
font[cat] = ImageFont.truetype(FONT_CAT[cat], FONT_SIZE)
|
||
|
||
x_pos = 0
|
||
y_pos = 0
|
||
for line in buf:
|
||
x_pos = 0
|
||
for char in line:
|
||
current_color = color_mapping(char.fg)
|
||
if char.bg != 'default':
|
||
draw.rectangle(
|
||
((x_pos, y_pos),
|
||
(x_pos+CHAR_WIDTH, y_pos+CHAR_HEIGHT)),
|
||
fill=color_mapping(char.bg))
|
||
|
||
cat = script_category(char.data)
|
||
if cat not in font:
|
||
print "Unknown font category: %s" % cat
|
||
draw.text(
|
||
(x_pos, y_pos),
|
||
char.data,
|
||
font=font.get(cat, font.get('default')),
|
||
fill=current_color)
|
||
#sys.stdout.write(c.data)
|
||
|
||
x_pos += CHAR_WIDTH
|
||
y_pos += CHAR_HEIGHT
|
||
#sys.stdout.write('\n')
|
||
|
||
image.save(filename)
|
||
|
||
def typescript_to_one_frame(png_file, text):
|
||
"""
|
||
Render text (terminal sequence) in png_file
|
||
"""
|
||
|
||
# fixing some broken characters because of bug #... in pyte 6.0
|
||
text = text.replace('Н', 'H').replace('Ν', 'N')
|
||
|
||
screen = pyte.screens.Screen(COLS, ROWS)
|
||
#screen.define_charset("B", "(")
|
||
|
||
stream = pyte.streams.ByteStream()
|
||
stream.attach(screen)
|
||
|
||
stream.feed(text)
|
||
|
||
gen_term(png_file, screen.buffer)
|
||
|
||
#
|
||
# wttr.in related functions
|
||
#
|
||
|
||
def parse_wttrin_png_name(name):
|
||
"""
|
||
Parse the PNG filename and return the result as a dictionary.
|
||
For example:
|
||
input = City_200x_lang=ru.png
|
||
output = {
|
||
"lang": "ru",
|
||
"width": "200",
|
||
"filetype": "png",
|
||
"location": "City"
|
||
}
|
||
"""
|
||
|
||
parsed = {}
|
||
|
||
if name.lower()[-4:] == '.png':
|
||
parsed['filetype'] = 'png'
|
||
name = name[:-4]
|
||
|
||
parts = name.split('_')
|
||
parsed['location'] = parts[0]
|
||
|
||
for part in parts:
|
||
if re.match('(?:[0-9]+)x', part):
|
||
parsed['width'] = part[:-1]
|
||
elif re.match('x(?:[0-9]+)', part):
|
||
parsed['height'] = part[1:]
|
||
elif re.match(part, '(?:[0-9]+)x(?:[0-9]+)'):
|
||
parsed['width'], parsed['height'] = part.split('x', 1)
|
||
elif '=' in part:
|
||
arg, val = part.split('=', 1)
|
||
parsed[arg] = val
|
||
|
||
return parsed
|
||
|
||
def make_wttrin_query(parsed):
|
||
"""
|
||
Convert parsed data into query name
|
||
"""
|
||
|
||
for key in ['width', 'height', 'filetype']:
|
||
if key in parsed:
|
||
del parsed[key]
|
||
|
||
location = parsed['location']
|
||
del parsed['location']
|
||
|
||
args = []
|
||
if 'options' in parsed:
|
||
args = [parsed['options']]
|
||
del parsed['options']
|
||
else:
|
||
args = []
|
||
|
||
for key, val in parsed.items():
|
||
args.append('%s=%s' % (key, val))
|
||
|
||
url = "http://wttr.in/%s" % location
|
||
if args != []:
|
||
url += "?%s" % ("&".join(args))
|
||
|
||
return url
|
||
|
||
|
||
def make_wttr_in_png(png_name, options=None):
|
||
"""
|
||
The function saves the weather report in the file and returns None.
|
||
The weather query is coded in filename (in the shortname).
|
||
"""
|
||
|
||
parsed = parse_wttrin_png_name(png_name)
|
||
|
||
# if location is MyLocation it should be overriden
|
||
# with autodetected location (from options)
|
||
if parsed.get('location', 'MyLocation') == 'MyLocation':
|
||
del parsed['location']
|
||
|
||
if options is not None:
|
||
for key, val in options.items():
|
||
if key not in parsed:
|
||
parsed[key] = val
|
||
url = make_wttrin_query(parsed)
|
||
|
||
timestamp = time.strftime("%Y%m%d%H", time.localtime())
|
||
cached_basename = url[14:].replace('/','_')
|
||
|
||
cached_png_file = "%s/%s/%s.png" % (PNG_CACHE, timestamp, cached_basename)
|
||
|
||
dirname = os.path.dirname(cached_png_file)
|
||
if not os.path.exists(dirname):
|
||
os.makedirs(dirname)
|
||
|
||
if os.path.exists(cached_png_file):
|
||
return cached_png_file
|
||
|
||
text = requests.get(url).text.replace('\n', '\r\n')
|
||
curl_output = text.encode('utf-8')
|
||
|
||
typescript_to_one_frame(cached_png_file, curl_output)
|
||
|
||
return cached_png_file
|