checked wttr.in in

pull/1/head
Igor Chubin 9 years ago
parent d8d224a97c
commit 05c224c68d

@ -1,2 +1,150 @@
# wttr.in
Web frontend for wego
## Usage
You can access the service from a shell or from a Web browser:
$ curl wttr.in
Weather for City: Paris, France
\ / Clear
.-. 10 11 °C
― ( ) ― ↑ 11 km/h
`- 10 km
/ \ 0.0 mm
You can specify the location, for that you want to get the weather information.
If you omit the location name, you will get the information for you current location,
based on your IP address.
$ curl wttr.in/London
$ curl wttr.in/Moscow
You can use 3-letters airport codes if you want to get the weather information
about some airports:
$ curl wttr.in/muc # Weather for IATA: muc, Munich International Airport, Germany
$ curl wttr.in/ham # Weather for IATA: muc, Hamburg Airport, Germany
You can also use IP-addresses (direct) or domain names (prefixed with @)
as a location specificator:
$ curl wttr.in/@github.com
$ curl wttr.in/@msu.ru
To get this information online, you can access the `:help` page:
$ curl wttr.in/:help
## Installation
To install the program you need:
1. Install external depndencies
2. Install python dependencies used by the service
3. Get WorldWeatherOnline API Key
4. Configure wego
5. Configure wttr.in
6. Configure HTTP-frontend service
### Install external dependencies
External requirements:
* wego [https://github.com/schachmat/wego], weather client for terminal
To install `wego` you must have golang installed. After that:
go get https://github.com/schachmat/wego
go install https://github.com/schachmat/wego
### Install python dependencies
Python requirements:
* Flask
* geoip2
* geopy
* requests
* gevent
You can install them using `pip`.
If `virtualenv` is used:
virtualenv ve
ve/bin/pip install -r requirements.txt
ve/bin/pip bin/srv.py
Also, you need to install the geoip2 database.
You can use a free database GeoLite2, that can be downloaded from http://dev.maxmind.com/geoip/geoip2/geolite2/
### Get WorldWeatherOnline key
To get the WorldWeatherOnline API key, you must register here:
https://developer.worldweatheronline.com/auth/register
### Configure wego
After you have the key, configure `wego`:
$ cat ~/.wegorc
{
"APIKey": "00XXXXXXXXXXXXXXXXXXXXXXXXXXX",
"City": "London",
"Numdays": 3,
"Imperial": false,
"Lang": "en"
}
The `City` parameter in `~/.wegorc` is ignored.
### Configure wttr.in
Edit the `bin/srv.py` and specify the path to the local `wttr.in` installation,
to the GeoLite database and to the `wego` installation:
MYDIR = "/home/igor/wttr.in"
GEOLITE = "/home/igor/wttr.in/GeoLite2-City.mmdb"
WEGO = "/home/igor/go/bin/wego"
### Configure HTTP-frontend service
Configure the web server, that will be used
to access the service (if you want to use a web frontend; it's recommended):
server {
listen [::]:80;
server_name wttr.in *.wttr.in;
access_log /var/log/nginx/wttr.in-access.log main;
error_log /var/log/nginx/wttr.in-error.log;
location /clouds_files { root /var/www/igor/; }
location /clouds_images { root /var/www/igor/; }
location / {
proxy_pass http://127.0.0.1:8002;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
client_max_body_size 10m;
client_body_buffer_size 128k;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
expires off;
}
}

@ -0,0 +1,261 @@
import sys
import logging
import os
import re
import requests
import socket
import subprocess
import time
import traceback
import geoip2.database
from geopy.geocoders import Nominatim
import jinja2
import gevent
from gevent.wsgi import WSGIServer
from gevent.queue import Queue
from gevent.monkey import patch_all
from gevent.subprocess import Popen, PIPE, STDOUT
patch_all()
from flask import Flask, request, render_template, send_from_directory
app = Flask(__name__)
MYDIR = os.path.abspath(os.path.dirname( os.path.dirname('__file__') ))
GEOLITE = os.path.join( MYDIR, "GeoLite2-City.mmdb" )
WEGO = "/home/igor/go/bin/wego"
CACHEDIR = os.path.join( MYDIR, "cache" )
IP2LCACHE = os.path.join( MYDIR, "cache/ip2l" )
ALIASES = os.path.join( MYDIR, "share/aliases" )
ANSI2HTML = os.path.join( MYDIR, "share/ansi2html.sh" )
HELP_FILE = os.path.join( MYDIR, 'share/help.txt' )
LOG_FILE = os.path.join( MYDIR, 'log/main.log' )
TEMPLATES = os.path.join( MYDIR, 'share/templates' )
STATIC = os.path.join( MYDIR, 'share/static' )
NOT_FOUND_LOCATION = "NOT_FOUND"
DEFAULT_LOCATION = "Oymyakon"
NOT_FOUND_MESSAGE = """
We were unable to find your location,
so we have brought you to Oymyakon,
one of the coldest permanently inhabited locales on the planet.
"""
logging.basicConfig(filename=LOG_FILE, level=logging.DEBUG)
reader = geoip2.database.Reader(GEOLITE)
geolocator = Nominatim()
my_loader = jinja2.ChoiceLoader([
app.jinja_loader,
jinja2.FileSystemLoader(TEMPLATES),
])
app.jinja_loader = my_loader
class Limits:
def __init__( self ):
self.intervals = [ 'min', 'hour', 'day' ]
self.divisor = {
'min': 60,
'hour': 3600,
'day': 86400,
}
self.counter = {
'min': {},
'hour': {},
'day': {},
}
self.limit = {
'min': 10,
'hour': 20,
'day': 100,
}
self.last_update = {
'min': 0,
'hour': 0,
'day': 0,
}
self.clear_counters()
def check_ip( self, ip ):
self.clear_counters()
for interval in self.intervals:
if ip not in self.counter[interval]:
self.counter[interval][ip] = 0
self.counter[interval][ip] += 1
if self.limit[interval] <= self.counter[interval][ip]:
log("Too many queries: %s in %s for %s" % (self.limit[interval], interval, ip) )
raise RuntimeError("Not so fast! Number of queries per %s is limited to %s" % (interval, self.limit[interval]))
print self.counter
def clear_counters( self ):
t = int( time.time() )
for interval in self.intervals:
if t / self.divisor[interval] != self.last_update[interval]:
self.counter[interval] = {}
self.last_update[interval] = t / self.divisor[interval]
limits = Limits()
def error( text ):
print text
raise RuntimeError(text)
def log( text ):
print text
logging.info( text )
def is_ip( ip ):
if re.match('\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}', ip) is None:
return False
try:
socket.inet_aton(ip)
return True
except socket.error:
return False
def save_weather_data( location, filename ):
if location == NOT_FOUND_LOCATION:
location_not_found = True
location = DEFAULT_LOCATION
else:
location_not_found = False
p = Popen( [ WEGO, '--city=%s' % location ], stdout=PIPE, stderr=PIPE )
stdout, stderr = p.communicate()
if p.returncode != 0:
error( stdout + stderr )
dirname = os.path.dirname( filename )
if not os.path.exists( dirname ):
os.makedirs( dirname )
if location_not_found:
stdout += NOT_FOUND_MESSAGE
open( filename, 'w' ).write( stdout )
p = Popen( [ "bash", ANSI2HTML, "--palette=solarized", "--bg=dark" ], stdin=PIPE, stdout=PIPE, stderr=PIPE )
stdout, stderr = p.communicate( stdout )
if p.returncode != 0:
error( stdout + stderr )
open( filename+'.html', 'w' ).write( stdout )
def get_filename( location ):
location = location.replace('/', '_')
timestamp = time.strftime( "%Y%m%d%H", time.localtime() )
return "%s/%s/%s" % ( CACHEDIR, location, timestamp )
def get_wetter(location, ip, html=False):
filename = get_filename( location )
if not os.path.exists( filename ):
limits.check_ip( ip )
save_weather_data( location, filename )
if html:
filename += '.html'
return open(filename).read()
def ip2location( ip ):
cached = os.path.join( IP2LCACHE, ip )
if os.path.exists( cached ):
return open( cached, 'r' ).read()
try:
t = requests.get( 'http://api.ip2location.com/?ip=%s&key=demo&package=WS10' % ip ).text
if ';' in t:
location = t.split(';')[3]
if not os.path.exists( IP2LCACHE ):
os.makedirs( IP2LCACHE )
open( cached, 'w' ).write( location )
return location
except:
pass
def get_location( ip_addr ):
response = reader.city( ip_addr )
city = response.city.name
if city is None and response.location:
coord = "%s, %s" % (response.location.latitude, response.location.longitude)
location = geolocator.reverse(coord, language='en')
city = location.raw.get('address', {}).get('city')
if city is None:
print ip_addr
city = ip2location( ip_addr )
return city or NOT_FOUND_LOCATION
def load_aliases( aliases_filename ):
aliases_db = {}
with open( aliases_filename, 'r' ) as f:
for line in f.readlines():
from_, to_ = line.split(':', 1)
aliases_db[ from_.strip().lower() ] = to_.strip()
return aliases_db
location_alias = load_aliases( ALIASES )
def location_canonical_name( location ):
if location.lower() in location_alias:
return location_alias[location.lower()]
return location
def show_help():
return open(HELP_FILE, 'r').read()
@app.route('/files/<path:path>')
def send_static(path):
print path
print STATIC
return send_from_directory(STATIC, path)
@app.route("/")
@app.route("/<string:location>")
def wttr(location = None):
user_agent = request.headers.get('User-Agent').lower()
html_output = True
if 'curl' in user_agent or 'wget' in user_agent:
html_output = False
if location == ':help':
help_ = show_help()
if html_output:
return render_template( 'index.html', body=help_ )
else:
return help_
orig_location = location
if request.headers.getlist("X-Forwarded-For"):
ip = request.headers.getlist("X-Forwarded-For")[0]
if ip.startswith('::ffff:'):
ip = ip[7:]
else:
ip = request.remote_addr
try:
if location is None:
location = get_location( ip )
if is_ip( location ):
location = get_location( location )
if location.startswith('@'):
location = get_location( socket.gethostbyname( location[1:] ) )
location = location_canonical_name( location )
log("%s %s %s %s" % (ip, user_agent, orig_location, location))
return get_wetter( location, ip, html=html_output )
except Exception, e:
logging.error("Exception has occured", exc_info=1)
return str(e).rstrip()+"\n"
server = WSGIServer(("", 8002), app)
server.serve_forever()

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flask
geoip2
geopy
requests
gevent

@ -0,0 +1,7 @@
Msk : Moscow
Moskva : Moscow
Moskau : Moscow
Kyiv : Kiev
Kiew : Kiev
Kijev : Kiev
spb : Saint Petersburg

@ -0,0 +1,498 @@
#!/bin/sh
# Convert ANSI (terminal) colours and attributes to HTML
# Licence: LGPLv2
# Author:
# http://www.pixelbeat.org/docs/terminal_colours/
# Examples:
# ls -l --color=always | ansi2html.sh > ls.html
# git show --color | ansi2html.sh > last_change.html
# Generally one can use the `script` util to capture full terminal output.
# Changes:
# V0.1, 24 Apr 2008, Initial release
# V0.2, 01 Jan 2009, Phil Harnish <philharnish@gmail.com>
# Support `git diff --color` output by
# matching ANSI codes that specify only
# bold or background colour.
# P@draigBrady.com
# Support `ls --color` output by stripping
# redundant leading 0s from ANSI codes.
# Support `grep --color=always` by stripping
# unhandled ANSI codes (specifically ^[[K).
# V0.3, 20 Mar 2009, http://eexpress.blog.ubuntu.org.cn/
# Remove cat -v usage which mangled non ascii input.
# Cleanup regular expressions used.
# Support other attributes like reverse, ...
# P@draigBrady.com
# Correctly nest <span> tags (even across lines).
# Add a command line option to use a dark background.
# Strip more terminal control codes.
# V0.4, 17 Sep 2009, P@draigBrady.com
# Handle codes with combined attributes and color.
# Handle isolated <bold> attributes with css.
# Strip more terminal control codes.
# V0.23, 22 Dec 2015
# http://github.com/pixelb/scripts/commits/master/scripts/ansi2html.sh
gawk --version >/dev/null || exit 1
if [ "$1" = "--version" ]; then
printf '0.22\n' && exit
fi
if [ "$1" = "--help" ]; then
printf '%s\n' \
'This utility converts ANSI codes in data passed to stdin
It has 2 optional parameters:
--bg=dark --palette=linux|solarized|tango|xterm
E.g.: ls -l --color=always | ansi2html.sh --bg=dark > ls.html' >&2
exit
fi
[ "$1" = "--bg=dark" ] && { dark_bg=yes; shift; }
if [ "$1" = "--palette=solarized" ]; then
# See http://ethanschoonover.com/solarized
P0=073642; P1=D30102; P2=859900; P3=B58900;
P4=268BD2; P5=D33682; P6=2AA198; P7=EEE8D5;
P8=002B36; P9=CB4B16; P10=586E75; P11=657B83;
P12=839496; P13=6C71C4; P14=93A1A1; P15=FDF6E3;
shift;
elif [ "$1" = "--palette=solarized-xterm" ]; then
# Above mapped onto the xterm 256 color palette
P0=262626; P1=AF0000; P2=5F8700; P3=AF8700;
P4=0087FF; P5=AF005F; P6=00AFAF; P7=E4E4E4;
P8=1C1C1C; P9=D75F00; P10=585858; P11=626262;
P12=808080; P13=5F5FAF; P14=8A8A8A; P15=FFFFD7;
shift;
elif [ "$1" = "--palette=tango" ]; then
# Gnome default
P0=000000; P1=CC0000; P2=4E9A06; P3=C4A000;
P4=3465A4; P5=75507B; P6=06989A; P7=D3D7CF;
P8=555753; P9=EF2929; P10=8AE234; P11=FCE94F;
P12=729FCF; P13=AD7FA8; P14=34E2E2; P15=EEEEEC;
shift;
elif [ "$1" = "--palette=xterm" ]; then
P0=000000; P1=CD0000; P2=00CD00; P3=CDCD00;
P4=0000EE; P5=CD00CD; P6=00CDCD; P7=E5E5E5;
P8=7F7F7F; P9=FF0000; P10=00FF00; P11=FFFF00;
P12=5C5CFF; P13=FF00FF; P14=00FFFF; P15=FFFFFF;
shift;
else # linux console
P0=000000; P1=AA0000; P2=00AA00; P3=AA5500;
P4=0000AA; P5=AA00AA; P6=00AAAA; P7=AAAAAA;
P8=555555; P9=FF5555; P10=55FF55; P11=FFFF55;
P12=5555FF; P13=FF55FF; P14=55FFFF; P15=FFFFFF;
[ "$1" = "--palette=linux" ] && shift
fi
[ "$1" = "--bg=dark" ] && { dark_bg=yes; shift; }
# Mac OSX's GNU sed is installed as gsed
# use e.g. homebrew 'gnu-sed' to get it
if ! sed --version >/dev/null 2>&1; then
if gsed --version >/dev/null 2>&1; then
alias sed=gsed
else
echo "Error, can't find an acceptable GNU sed." >&2
exit 1
fi
fi
printf '%s' "<html>
<head>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
<link rel=\"stylesheet\" type=\"text/css\" href=\"/files/style.css\" />
<style type=\"text/css\">
.ef0,.f0 { color: #$P0; } .eb0,.b0 { background-color: #$P0; }
.ef1,.f1 { color: #$P1; } .eb1,.b1 { background-color: #$P1; }
.ef2,.f2 { color: #$P2; } .eb2,.b2 { background-color: #$P2; }
.ef3,.f3 { color: #$P3; } .eb3,.b3 { background-color: #$P3; }
.ef4,.f4 { color: #$P4; } .eb4,.b4 { background-color: #$P4; }
.ef5,.f5 { color: #$P5; } .eb5,.b5 { background-color: #$P5; }
.ef6,.f6 { color: #$P6; } .eb6,.b6 { background-color: #$P6; }
.ef7,.f7 { color: #$P7; } .eb7,.b7 { background-color: #$P7; }
.ef8, .f0 > .bold,.bold > .f0 { color: #$P8; font-weight: normal; }
.ef9, .f1 > .bold,.bold > .f1 { color: #$P9; font-weight: normal; }
.ef10,.f2 > .bold,.bold > .f2 { color: #$P10; font-weight: normal; }
.ef11,.f3 > .bold,.bold > .f3 { color: #$P11; font-weight: normal; }
.ef12,.f4 > .bold,.bold > .f4 { color: #$P12; font-weight: normal; }
.ef13,.f5 > .bold,.bold > .f5 { color: #$P13; font-weight: normal; }
.ef14,.f6 > .bold,.bold > .f6 { color: #$P14; font-weight: normal; }
.ef15,.f7 > .bold,.bold > .f7 { color: #$P15; font-weight: normal; }
.eb8 { background-color: #$P8; }
.eb9 { background-color: #$P9; }
.eb10 { background-color: #$P10; }
.eb11 { background-color: #$P11; }
.eb12 { background-color: #$P12; }
.eb13 { background-color: #$P13; }
.eb14 { background-color: #$P14; }
.eb15 { background-color: #$P15; }
"
# The default xterm 256 colour palette
for red in 0 1 2 3 4 5 ; do
for green in 0 1 2 3 4 5 ; do
for blue in 0 1 2 3 4 5 ; do
c=$((16 + ($red * 36) + ($green * 6) + $blue))
r=$((($red * 40 + 55) * ($red > 0)))
g=$((($green * 40 + 55) * ($green > 0)))
b=$((($blue * 40 + 55) * ($blue > 0)))
printf ".ef%d { color: #%2.2x%2.2x%2.2x; } " $c $r $g $b
printf ".eb%d { background-color: #%2.2x%2.2x%2.2x; }\n" $c $r $g $b
done
done
done
for gray in $(seq 0 23); do
c=$(($gray+232))
l=$(($gray*10 + 8))
printf ".ef%d { color: #%2.2x%2.2x%2.2x; } " $c $l $l $l
printf ".eb%d { background-color: #%2.2x%2.2x%2.2x; }\n" $c $l $l $l
done
printf '%s' '
.f9 { color: '`[ "$dark_bg" ] && printf "#$P7;" || printf "#$P0;"`' }
.b9 { background-color: #'`[ "$dark_bg" ] && printf $P0 || printf $P15`'; }
.f9 > .bold,.bold > .f9, body.f9 > pre > .bold {
/* Bold is heavy black on white, or bright white
depending on the default background */
color: '`[ "$dark_bg" ] && printf "#$P15;" || printf "#$P0;"`'
font-weight: '`[ "$dark_bg" ] && printf 'normal;' || printf 'bold;'`'
}
.reverse {
/* CSS does not support swapping fg and bg colours unfortunately,
so just hardcode something that will look OK on all backgrounds. */
'"color: #$P0; background-color: #$P7;"'
}
.underline { text-decoration: underline; }
.line-through { text-decoration: line-through; }
.blink { text-decoration: blink; }
/* Avoid pixels between adjacent span elements.
Note this only works for lines less than 80 chars
where we close span elements on the same line.
span { display: inline-block; }
*/
</style>
</head>
<body class="">
<pre>
'
p='\x1b\[' #shortcut to match escape codes
# Handle various xterm control sequences.
# See /usr/share/doc/xterm-*/ctlseqs.txt
sed "
# escape ampersand and quote
s#&#\&amp;#g; s#\"#\&quot;#g;
s#\x1b[^\x1b]*\x1b\\\##g # strip anything between \e and ST
s#\x1b][0-9]*;[^\a]*\a##g # strip any OSC (xterm title etc.)
s#\r\$## # strip trailing \r
# strip other non SGR escape sequences
s#[\x07]##g
s#\x1b[]>=\][0-9;]*##g
s#\x1bP+.\{5\}##g
# Mark cursor positioning codes \"Jr;c;
s#${p}\([0-9]\{1,2\}\)G#\"J;\1;#g
s#${p}\([0-9]\{1,2\}\);\([0-9]\{1,2\}\)H#\"J\1;\2;#g
# Mark clear as \"Cn where n=1 is screen and n=0 is to end-of-line
s#${p}H#\"C1;#g
s#${p}K#\"C0;#g
# Mark Cursor move columns as \"Mn where n is +ve for right, -ve for left
s#${p}C#\"M1;#g
s#${p}\([0-9]\{1,\}\)C#\"M\1;#g
s#${p}\([0-9]\{1,\}\)D#\"M-\1;#g
s#${p}\([0-9]\{1,\}\)P#\"X\1;#g
s#${p}[0-9;?]*[^0-9;?m]##g
" |
# Normalize the input before transformation
sed "
# escape HTML (ampersand and quote done above)
s#>#\&gt;#g; s#<#\&lt;#g;
# normalize SGR codes a little
# split 256 colors out and mark so that they're not
# recognised by the following 'split combined' line
:e
s#${p}\([0-9;]\{1,\}\);\([34]8;5;[0-9]\{1,3\}\)m#${p}\1m${p}¬\2m#g; t e
s#${p}\([34]8;5;[0-9]\{1,3\}\)m#${p}¬\1m#g;
:c
s#${p}\([0-9]\{1,\}\);\([0-9;]\{1,\}\)m#${p}\1m${p}\2m#g; t c # split combined
s#${p}0\([0-7]\)#${p}\1#g #strip leading 0
s#${p}1m\(\(${p}[4579]m\)*\)#\1${p}1m#g #bold last (with clr)
s#${p}m#${p}0m#g #add leading 0 to norm
# undo any 256 color marking
s#${p}¬\([34]8;5;[0-9]\{1,3\}\)m#${p}\1m#g;
# map 16 color codes to color + bold
s#${p}9\([0-7]\)m#${p}3\1m${p}1m#g;
s#${p}10\([0-7]\)m#${p}4\1m${p}1m#g;
# change 'reset' code to \"R
s#${p}0m#\"R;#g
" |
# Convert SGR sequences to HTML
sed "
# common combinations to minimise html (optional)
:f
s#${p}3[0-7]m${p}3\([0-7]\)m#${p}3\1m#g; t f
:b
s#${p}4[0-7]m${p}4\([0-7]\)m#${p}4\1m#g; t b
s#${p}3\([0-7]\)m${p}4\([0-7]\)m#<span class=\"f\1 b\2\">#g
s#${p}4\([0-7]\)m${p}3\([0-7]\)m#<span class=\"f\2 b\1\">#g
s#${p}1m#<span class=\"bold\">#g
s#${p}4m#<span class=\"underline\">#g
s#${p}5m#<span class=\"blink\">#g
s#${p}7m#<span class=\"reverse\">#g
s#${p}9m#<span class=\"line-through\">#g
s#${p}3\([0-9]\)m#<span class=\"f\1\">#g
s#${p}4\([0-9]\)m#<span class=\"b\1\">#g
s#${p}38;5;\([0-9]\{1,3\}\)m#<span class=\"ef\1\">#g
s#${p}48;5;\([0-9]\{1,3\}\)m#<span class=\"eb\1\">#g
s#${p}[0-9;]*m##g # strip unhandled codes
" |
# Convert alternative character set and handle cursor movement codes
# Note we convert here, as if we do at start we have to worry about avoiding
# conversion of SGR codes etc., whereas doing here we only have to
# avoid conversions of stuff between &...; or <...>
#
# Note we could use sed to do this based around:
# sed 'y/abcdefghijklmnopqrstuvwxyz{}`~/▒␉␌␍␊°±␤␋┘┐┌└┼⎺⎻─⎼⎽├┤┴┬│≤≥π£◆·/'
# However that would be very awkward as we need to only conv some input.
# The basic scheme that we do in the awk script below is:
# 1. enable transliterate once "T1; is seen
# 2. disable once "T0; is seen (may be on diff line)
# 3. never transliterate between &; or <> chars
# 4. track x,y movements and active display mode at each position
# 5. buffer line/screen and dump when required
sed "
# change 'smacs' and 'rmacs' to \"T1 and \"T0 to simplify matching.
s#\x1b(0#\"T1;#g;
s#\x0E#\"T1;#g;
s#\x1b(B#\"T0;#g
s#\x0F#\"T0;#g
" |
(
gawk '
function dump_line(l,del,c,blanks,ret) {
for(c=1;c<maxX;c++) {
if ((c SUBSEP l) in attr || length(cur)) {
ret = ret blanks fixas(cur,attr[c,l])
if(del) delete attr[c,l]
blanks=""
}
if ((c SUBSEP l) in dump) {
ret=ret blanks dump[c,l]
if(del) delete dump[c,l]
blanks=""
} else blanks=blanks " "
}
if(length(cur)) ret=ret blanks
return ret
}
function dump_screen(l,ret) {
for(l=1;l<=maxY;l++)
ret=ret dump_line(l,0) "\n"
return ret fixas(cur, "")
}
function atos(a,i,ret) {
for(i=1;i<=length(a);i++) if(i in a) ret=ret a[i]
return ret
}
function fixas(a,s,spc,i,attr,rm,ret) {
spc=length(a)
l=split(s,attr,">")
for(i=1;i<=spc;i++) {
rm=rm?rm:(a[i]!=attr[i]">")
if(rm) {
ret=ret "</span>"
delete a[i];
}
}
for(i=1;i<l;i++) {
attr[i]=attr[i]">"
if(a[i]!=attr[i]) {
a[i]=attr[i]
ret = ret attr[i]
}
}
return ret
}
function encode(string,start,end,i,ret,pos,sc,buf) {
if(!end) end=length(string);
if(!start) start=1;
state=3
for(i=1;i<=length(string);i++) {
c=substr(string,i,1)
if(state==2) {
sc=sc c
if(c==";") {
c=sc
state=last_mode
} else continue
} else {
if(c=="\r") { x=1; continue }
if(c=="<") {
# Change attributes - store current active
# attributes in span array
split(substr(string,i),cord,">");
i+=length(cord[1])
span[++spc]=cord[1] ">"
continue
}
else if(c=="&") {
# All goes to single position till we see a semicolon
sc=c
state=2
continue
}
else if(c=="\b") {
# backspace move insertion point back 1
if(spc) attr[x,y]=atos(span)
x=x>1?x-1:1
continue
}
else if(c=="\"") {
split(substr(string,i+2),cord,";")
cc=substr(string,i+1,1);
if(cc=="T") {
# Transliterate on/off
if(cord[1]==1&&state==3) last_mode=state=4
if(cord[1]==0&&state==4) last_mode=state=3
}
else if(cc=="C") {
# Clear
if(cord[1]+0) {
# Screen - if Recording dump screen
if(dumpStatus==dsActive) ret=ret dump_screen()
dumpStatus=dsActive
delete dump
delete attr
x=y=1
} else {
# To end of line
for(pos=x;pos<maxX;pos++) {
dump[pos,y]=" "
if (!spc) delete attr[pos,y]
else attr[pos,y]=atos(span)
}
}
}
else if(cc=="J") {
# Jump to x,y
i+=length(cord[2])+1
# If line is higher - dump previous screen
if(dumpStatus==dsActive&&cord[1]<y) {
ret=ret dump_screen();
dumpStatus=dsNew;
}
x=cord[2]
if(length(cord[1]) && y!=cord[1]){
y=cord[1]
if(y>maxY) maxY=y
# Change y - start recording
dumpStatus=dumpStatus?dumpStatus:dsReset
}
}
else if(cc=="M") {
# Move left/right on current line
x+=cord[1]
}
else if(cc=="X") {
# delete on right
for(pos=x;pos<=maxX;pos++) {
nx=pos+cord[1]
if(nx<maxX) {
if((nx SUBSEP y) in attr) attr[pos,y] = attr[nx,y]
else delete attr[pos,y]
if((nx SUBSEP y) in dump) dump[pos,y] = dump[nx,y]
else delete dump[pos,y]
} else if(spc) {
attr[pos,y]=atos(span)
dump[pos,y]=" "
}
}
}
else if(cc=="R") {
# Reset attributes
while(spc) delete span[spc--]
}
i+=length(cord[1])+2
continue
}
else if(state==4&&i>=start&&i<=end&&c in Trans) c=Trans[c]
}
if(dumpStatus==dsReset) {
delete dump
delete attr
ret=ret"\n"
dumpStatus=dsActive
}
if(dumpStatus==dsNew) {
# After moving/clearing we are now ready to write
# somthing to the screen so start recording now
ret=ret"\n"
dumpStatus=dsActive
}
if(dumpStatus==dsActive||dumpStatus==dsOff) {
dump[x,y] = c
if(!spc) delete attr[x,y]
else attr[x,y] = atos(span)
if(++x>maxX) maxX=x;
}
}
# End of line if dumping increment y and set x back to first col
x=1
if(!dumpStatus) return ret dump_line(y,1);
else if(++y>maxY) maxY=y;
return ret
}
BEGIN{
OFS=FS
# dump screen status
dsOff=0 # Not dumping screen contents just write output direct
dsNew=1 # Just after move/clear waiting for activity to start recording
dsReset=2 # Screen cleared build new empty buffer and record
dsActive=3 # Currently recording
F="abcdefghijklmnopqrstuvwxyz{}`~"
T="▒␉␌␍␊°±␤␋┘┐┌└┼⎺⎻─⎼⎽├┤┴┬│≤≥π£◆·"
maxX=80
delete cur;
x=y=1
for(i=1;i<=length(F);i++)Trans[substr(F,i,1)]=substr(T,i,1);
}
{ $0=encode($0) }
1
END {
if(dumpStatus) {
print dump_screen();
}
}'
)
printf '</pre>
</body>
</html>\n'

@ -0,0 +1,15 @@
Usage:
$ curl wttr.in # current location
$ curl wttr.in/muc # weather in the Munic airport
Supported locations:
/paris # city name
/muc # airport code (3 letters)
/@stackoverflow.com # domain name
Special URLs:
/:help # show this page

@ -0,0 +1,4 @@
body {
background: black;
color: #bbbbbb;
}

@ -0,0 +1,10 @@
<html>
<head>
<link rel="stylesheet" type="text/css" href="/files/style.css" />
</head>
<body>
<pre>
{{ body }}
</pre>
</body>
</html>
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