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fish-shell/share/tools/web_config/webconfig.py
Lior Stern 5b2250883a Add termux support for fish_config.
2019-10-26 18:16:54 +02:00

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from __future__ import unicode_literals
from __future__ import print_function
import binascii
import cgi
try:
from html import escape as escape_html
except ImportError:
from cgi import escape as escape_html
from distutils.version import LooseVersion
from distutils.spawn import find_executable
import glob
import multiprocessing.pool
import operator
import os
import platform
import random
import re
import select
import socket
import string
import subprocess
import sys
from itertools import chain
FISH_BIN_PATH = False # will be set later
IS_PY2 = sys.version_info[0] == 2
if IS_PY2:
import SimpleHTTPServer
import SocketServer
from urlparse import parse_qs
else:
import http.server as SimpleHTTPServer
import socketserver as SocketServer
from urllib.parse import parse_qs
def isMacOS10_12_5_OrLater():
""" Return whether this system is macOS 10.12.5 or a later version. """
version = platform.mac_ver()[0]
return version and LooseVersion(version) >= LooseVersion("10.12.5")
def is_wsl():
""" Return whether we are running under the Windows Subsystem for Linux """
if "linux" in platform.system().lower() and os.access("/proc/version", os.R_OK):
with open("/proc/version", "r") as f:
if "Microsoft" in f.read():
return True
return False
def is_termux():
""" Return whether we are running under the Termux application for Android"""
return 'com.termux' in os.environ['PATH'] and find_executable('termux-open-url')
# Disable CLI web browsers
term = os.environ.pop("TERM", None)
# This import must be done with an empty $TERM, otherwise a command-line browser may be started
# which will block the whole process - see https://docs.python.org/3/library/webbrowser.html
import webbrowser
if term:
os.environ["TERM"] = term
try:
import json
except ImportError:
import simplejson as json
def run_fish_cmd(text):
# Ensure that fish is using UTF-8.
ctype = os.environ.get("LC_ALL", os.environ.get("LC_CTYPE", os.environ.get("LANG")))
env = None
if ctype is None or re.search(r"\.utf-?8$", ctype, flags=re.I) is None:
# override LC_CTYPE with en_US.UTF-8
# We're assuming this locale exists.
# Fish makes the same assumption in config.fish
env = os.environ.copy()
env.update(LC_CTYPE="en_US.UTF-8", LANG="en_US.UTF-8")
print("$ " + text)
p = subprocess.Popen(
[FISH_BIN_PATH],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=env,
)
out, err = p.communicate(text.encode("utf-8"))
out = out.decode("utf-8", "replace")
err = err.decode("utf-8", "replace")
return out, err
def escape_fish_cmd(text):
# Replace one backslash with two, and single quotes with backslash-quote
escaped = text.replace("\\", "\\\\").replace("'", "\\'")
return "'" + escaped + "'"
named_colors = {
"black": "000000",
"red": "800000",
"green": "008000",
"brown": "725000",
"yellow": "808000",
"blue": "000080",
"magenta": "800080",
"purple": "800080",
"cyan": "008080",
"grey": "e5e5e5",
"brgrey": "555555",
"white": "c0c0c0",
"brblack": "808080",
"brred": "ff0000",
"brgreen": "00ff00",
"brbrown": "ffff00",
"bryellow": "ffff00",
"brblue": "0000ff",
"brmagenta": "ff00ff",
"brpurple": "ff00ff",
"brcyan": "00ffff",
"brwhite": "ffffff",
}
bindings_blacklist = set(["self-insert", "'begin;end'"])
def parse_one_color(comp):
""" A basic function to parse a single color value like 'FFA000' """
if comp in named_colors:
# Named color
return named_colors[comp]
elif (
re.match(r"[0-9a-fA-F]{3}", comp) is not None
or re.match(r"[0-9a-fA-F]{6}", comp) is not None
):
# Hex color
return comp
else:
# Unknown
return ""
def better_color(c1, c2):
""" Indicate which color is "better", i.e. prefer term256 colors """
if not c2:
return c1
if not c1:
return c2
if c1 == "normal":
return c2
if c2 == "normal":
return c1
if c2 in named_colors:
return c1
if c1 in named_colors:
return c2
return c1
def parse_color(color_str):
""" A basic function to parse a color string, for example, 'red' '--bold'.
"""
comps = color_str.split(" ")
color = "normal"
background_color = ""
bold, underline, italics, dim, reverse = False, False, False, False, False
for comp in comps:
# Remove quotes
comp = comp.strip("'\" ")
if comp == "--bold":
bold = True
elif comp == "--underline":
underline = True
elif comp == "--italics":
italics = True
elif comp == "--dim":
dim = True
elif comp == "--reverse":
reverse = True
elif comp.startswith("--background="):
# Background color
background_color = better_color(
background_color, parse_one_color(comp[len("--background=") :])
)
else:
# Regular color
color = better_color(color, parse_one_color(comp))
return {
"color": color,
"background": background_color,
"bold": bold,
"underline": underline,
"italics": italics,
"dim": dim,
"reverse": reverse,
}
def parse_bool(val):
val = val.lower()
if val.startswith("f") or val.startswith("0"):
return False
if val.startswith("t") or val.startswith("1"):
return True
return bool(val)
def html_color_for_ansi_color_index(val):
arr = [
"black",
"#AA0000",
"#00AA00",
"#AA5500",
"#0000AA",
"#AA00AA",
"#00AAAA",
"#AAAAAA",
"#555555",
"#FF5555",
"#55FF55",
"#FFFF55",
"#5555FF",
"#FF55FF",
"#55FFFF",
"white",
"#000000",
"#00005f",
"#000087",
"#0000af",
"#0000d7",
"#0000ff",
"#005f00",
"#005f5f",
"#005f87",
"#005faf",
"#005fd7",
"#005fff",
"#008700",
"#00875f",
"#008787",
"#0087af",
"#0087d7",
"#0087ff",
"#00af00",
"#00af5f",
"#00af87",
"#00afaf",
"#00afd7",
"#00afff",
"#00d700",
"#00d75f",
"#00d787",
"#00d7af",
"#00d7d7",
"#00d7ff",
"#00ff00",
"#00ff5f",
"#00ff87",
"#00ffaf",
"#00ffd7",
"#00ffff",
"#5f0000",
"#5f005f",
"#5f0087",
"#5f00af",
"#5f00d7",
"#5f00ff",
"#5f5f00",
"#5f5f5f",
"#5f5f87",
"#5f5faf",
"#5f5fd7",
"#5f5fff",
"#5f8700",
"#5f875f",
"#5f8787",
"#5f87af",
"#5f87d7",
"#5f87ff",
"#5faf00",
"#5faf5f",
"#5faf87",
"#5fafaf",
"#5fafd7",
"#5fafff",
"#5fd700",
"#5fd75f",
"#5fd787",
"#5fd7af",
"#5fd7d7",
"#5fd7ff",
"#5fff00",
"#5fff5f",
"#5fff87",
"#5fffaf",
"#5fffd7",
"#5fffff",
"#870000",
"#87005f",
"#870087",
"#8700af",
"#8700d7",
"#8700ff",
"#875f00",
"#875f5f",
"#875f87",
"#875faf",
"#875fd7",
"#875fff",
"#878700",
"#87875f",
"#878787",
"#8787af",
"#8787d7",
"#8787ff",
"#87af00",
"#87af5f",
"#87af87",
"#87afaf",
"#87afd7",
"#87afff",
"#87d700",
"#87d75f",
"#87d787",
"#87d7af",
"#87d7d7",
"#87d7ff",
"#87ff00",
"#87ff5f",
"#87ff87",
"#87ffaf",
"#87ffd7",
"#87ffff",
"#af0000",
"#af005f",
"#af0087",
"#af00af",
"#af00d7",
"#af00ff",
"#af5f00",
"#af5f5f",
"#af5f87",
"#af5faf",
"#af5fd7",
"#af5fff",
"#af8700",
"#af875f",
"#af8787",
"#af87af",
"#af87d7",
"#af87ff",
"#afaf00",
"#afaf5f",
"#afaf87",
"#afafaf",
"#afafd7",
"#afafff",
"#afd700",
"#afd75f",
"#afd787",
"#afd7af",
"#afd7d7",
"#afd7ff",
"#afff00",
"#afff5f",
"#afff87",
"#afffaf",
"#afffd7",
"#afffff",
"#d70000",
"#d7005f",
"#d70087",
"#d700af",
"#d700d7",
"#d700ff",
"#d75f00",
"#d75f5f",
"#d75f87",
"#d75faf",
"#d75fd7",
"#d75fff",
"#d78700",
"#d7875f",
"#d78787",
"#d787af",
"#d787d7",
"#d787ff",
"#d7af00",
"#d7af5f",
"#d7af87",
"#d7afaf",
"#d7afd7",
"#d7afff",
"#d7d700",
"#d7d75f",
"#d7d787",
"#d7d7af",
"#d7d7d7",
"#d7d7ff",
"#d7ff00",
"#d7ff5f",
"#d7ff87",
"#d7ffaf",
"#d7ffd7",
"#d7ffff",
"#ff0000",
"#ff005f",
"#ff0087",
"#ff00af",
"#ff00d7",
"#ff00ff",
"#ff5f00",
"#ff5f5f",
"#ff5f87",
"#ff5faf",
"#ff5fd7",
"#ff5fff",
"#ff8700",
"#ff875f",
"#ff8787",
"#ff87af",
"#ff87d7",
"#ff87ff",
"#ffaf00",
"#ffaf5f",
"#ffaf87",
"#ffafaf",
"#ffafd7",
"#ffafff",
"#ffd700",
"#ffd75f",
"#ffd787",
"#ffd7af",
"#ffd7d7",
"#ffd7ff",
"#ffff00",
"#ffff5f",
"#ffff87",
"#ffffaf",
"#ffffd7",
"#ffffff",
"#080808",
"#121212",
"#1c1c1c",
"#262626",
"#303030",
"#3a3a3a",
"#444444",
"#4e4e4e",
"#585858",
"#626262",
"#6c6c6c",
"#767676",
"#808080",
"#8a8a8a",
"#949494",
"#9e9e9e",
"#a8a8a8",
"#b2b2b2",
"#bcbcbc",
"#c6c6c6",
"#d0d0d0",
"#dadada",
"#e4e4e4",
"#eeeeee",
]
if val < 0 or val >= len(arr):
return ""
else:
return arr[val]
# Function to return special ANSI escapes like exit_attribute_mode
g_special_escapes_dict = None
def get_special_ansi_escapes():
global g_special_escapes_dict
if g_special_escapes_dict is None:
import curses
g_special_escapes_dict = {}
curses.setupterm()
# Helper function to get a value for a tparm
def get_tparm(key):
val = None
key = curses.tigetstr(key)
if key:
val = curses.tparm(key)
if val:
val = val.decode("utf-8")
return val
# Just a few for now
g_special_escapes_dict["exit_attribute_mode"] = get_tparm("sgr0")
g_special_escapes_dict["bold"] = get_tparm("bold")
g_special_escapes_dict["underline"] = get_tparm("smul")
return g_special_escapes_dict
# Given a known ANSI escape sequence, convert it to HTML and append to the list
# Returns whether we have an open <span>
def append_html_for_ansi_escape(full_val, result, span_open):
# Strip off the initial \x1b[ and terminating m
val = full_val[2:-1]
# Helper function to close a span if it's open
def close_span():
if span_open:
result.append("</span>")
# term256 foreground color
match = re.match("38;5;(\d+)", val)
if match is not None:
close_span()
html_color = html_color_for_ansi_color_index(int(match.group(1)))
result.append('<span style="color: ' + html_color + '">')
return True # span now open
# term16 foreground color
if val in (str(x) for x in chain(range(90, 97), range(30, 38))):
close_span()
html_color = html_color_for_ansi_color_index(
int(val) - (30 if int(val) < 90 else 82)
)
result.append('<span style="color: ' + html_color + '">')
return True # span now open
# Try special escapes
special_escapes = get_special_ansi_escapes()
if full_val == special_escapes["exit_attribute_mode"]:
close_span()
return False
# TODO We don't handle bold, underline, italics, dim, or reverse yet
# Do nothing on failure
return span_open
def strip_ansi(val):
# Make a half-assed effort to strip ANSI control sequences
# We assume that all such sequences start with 0x1b and end with m or ctrl-o,
# which catches most cases
return re.sub("\x1b[^m]*m\x0f?", "", val)
def ansi_prompt_line_width(val):
# Given an ANSI prompt, return the length of its longest line, as in the
# number of characters it takes up. Start by stripping off ANSI.
stripped_val = strip_ansi(val)
# Now count the longest line
return max([len(x) for x in stripped_val.split("\n")])
def ansi_to_html(val):
# Split us up by ANSI escape sequences. We want to catch not only the
# standard color codes, but also things like sgr0. Hence this lame check.
# Note that Python 2.6 doesn't have a flag param to re.split, so we have to
# compile it first.
reg = re.compile(
"""
( # Capture
\x1b # Escape
[^m]* # Zero or more non-'m's
m # Literal m terminates the sequence
\x0f? # HACK: A ctrl-o - this is how tmux' sgr0 ends
) # End capture
""",
re.VERBOSE,
)
separated = reg.split(val)
# We have to HTML escape the text and convert ANSI escapes into HTML
# Collect it all into this array
result = []
span_open = False
# Text is at even indexes, escape sequences at odd indexes
for i in range(len(separated)):
component = separated[i]
if i % 2 == 0:
# It's text, possibly empty
# Clean up other ANSI junk
result.append(escape_html(strip_ansi(component)))
else:
# It's an escape sequence. Close the previous escape.
span_open = append_html_for_ansi_escape(component, result, span_open)
# Close final escape
if span_open:
result.append("</span>")
# Remove empty elements
result = [x for x in result if x]
# Clean up empty spans, the nasty way
idx = len(result) - 1
while idx >= 1:
if result[idx] == "</span>" and result[idx - 1].startswith("<span"):
# Empty span, delete these two
result[idx - 1 : idx + 1] = []
idx = idx - 1
idx = idx - 1
return "".join(result)
class FishVar:
""" A class that represents a variable """
def __init__(self, name, value):
self.name = name
self.value = value
self.universal = False
self.exported = False
def get_json_obj(self):
# Return an array(3): name, value, flags
flags = []
if self.universal:
flags.append("universal")
if self.exported:
flags.append("exported")
return {"name": self.name, "value": self.value, "Flags": ", ".join(flags)}
class FishBinding:
"""A class that represents keyboard binding """
def __init__(self, command, raw_binding, readable_binding, description=None):
self.command = command
self.bindings = []
self.description = description
self.add_binding(raw_binding, readable_binding)
def add_binding(self, raw_binding, readable_binding):
for i in self.bindings:
if i["readable_binding"] == readable_binding:
i["raw_bindings"].append(raw_binding)
break
else:
self.bindings.append(
{"readable_binding": readable_binding, "raw_bindings": [raw_binding]}
)
def get_json_obj(self):
return {
"command": self.command,
"bindings": self.bindings,
"description": self.description,
}
class BindingParser:
""" Class to parse codes for bind command """
# TODO: What does snext and sprevious mean ?
readable_keys = {
"dc": "Delete",
"npage": "Page Up",
"ppage": "Page Down",
"sdc": "Shift Delete",
"shome": "Shift Home",
"left": "Left Arrow",
"right": "Right Arrow",
"up": "Up Arrow",
"down": "Down Arrow",
"sleft": "Shift Left",
"sright": "Shift Right",
"btab": "Shift Tab",
}
def set_buffer(self, buffer):
""" Sets code to parse """
self.buffer = buffer or b""
self.index = 0
def get_char(self):
""" Gets next character from buffer """
if self.index >= len(self.buffer):
return "\0"
c = self.buffer[self.index]
self.index += 1
return c
def unget_char(self):
""" Goes back by one character for parsing """
self.index -= 1
def end(self):
""" Returns true if reached end of buffer """
return self.index >= len(self.buffer)
def parse_control_sequence(self):
""" Parses terminal specifiec control sequences """
result = ""
c = self.get_char()
# \e0 is used to denote start of control sequence
if c == "O":
c = self.get_char()
# \[1\; is start of control sequence
if c == "1":
b = self.get_char()
c = self.get_char()
if b == "\\" and c == "~":
result += "Home"
elif c == ";":
c = self.get_char()
# 3 is Alt
if c == "3":
result += "ALT - "
c = self.get_char()
# \[4\~ is End
if c == "4":
b = self.get_char()
c = self.get_char()
if b == "\\" and c == "~":
result += "End"
# 5 is Ctrl
if c == "5":
result += "CTRL - "
c = self.get_char()
# 9 is Alt
if c == "9":
result += "ALT - "
c = self.get_char()
if c == "A":
result += "Up Arrow"
elif c == "B":
result += "Down Arrow"
elif c == "C":
result += "Right Arrow"
elif c == "D":
result += "Left Arrow"
elif c == "F":
result += "End"
elif c == "H":
result += "Home"
return result
def get_readable_binding(self):
""" Gets a readable representation of binding """
try:
result = BindingParser.readable_keys[self.buffer.lower()]
except KeyError:
result = self.parse_binding()
return result
def parse_binding(self):
readable_command = ""
result = ""
alt = ctrl = False
while not self.end():
c = self.get_char()
if c == "\\":
c = self.get_char()
if c == "e":
d = self.get_char()
if d == "O":
self.unget_char()
result += self.parse_control_sequence()
elif d == "\\":
if self.get_char() == "[":
result += self.parse_control_sequence()
else:
self.unget_char()
self.unget_char()
alt = True
elif d == "\0":
result += "ESC"
else:
alt = True
self.unget_char()
elif c == "c":
ctrl = True
elif c == "n":
result += "Enter"
elif c == "t":
result += "Tab"
elif c == "b":
result += "Backspace"
elif c.isalpha():
result += "\\" + c
else:
result += c
elif c == "\x7f":
result += "Backspace"
else:
result += c
if ctrl:
readable_command += "CTRL - "
if alt:
readable_command += "ALT - "
if result == "":
return "unknown-control-sequence"
return readable_command + result
class FishConfigTCPServer(SocketServer.TCPServer):
"""TCPServer that only accepts connections from localhost (IPv4/IPv6)."""
WHITELIST = set(["::1", "::ffff:127.0.0.1", "127.0.0.1"])
address_family = socket.AF_INET6 if socket.has_ipv6 else socket.AF_INET
def verify_request(self, request, client_address):
return client_address[0] in FishConfigTCPServer.WHITELIST
class FishConfigHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
def write_to_wfile(self, txt):
self.wfile.write(txt.encode("utf-8"))
def do_get_colors(self):
# Looks for fish_color_*.
# Returns an array of lists [color_name, color_description, color_value]
result = []
# Make sure we return at least these
remaining = set(
[
"normal",
"error",
"command",
"end",
"param",
"comment",
"match",
"selection",
"search_match",
"operator",
"escape",
"quote",
"redirection",
"valid_path",
"autosuggestion" "user",
"host",
"cancel",
]
)
# Here are our color descriptions
descriptions = {
"normal": "Default text",
"command": "Ordinary commands",
"quote": "Text within quotes",
"redirection": "Like | and >",
"end": "Like ; and &",
"error": "Potential errors",
"param": "Command parameters",
"comment": "Comments start with #",
"match": "Matching parenthesis",
"selection": "Selected text",
"search_match": "History searching",
"history_current": "Directory history",
"operator": "Like * and ~",
"escape": "Escapes like \\n",
"cwd": "Current directory",
"cwd_root": "cwd for root user",
"valid_path": "Valid paths",
"autosuggestion": "Suggested completion",
"user": "Username in the prompt",
"host": "Hostname in the prompt",
"cancel": "The ^C cancel indicator",
}
out, err = run_fish_cmd("set -L")
for line in out.split("\n"):
for match in re.finditer(r"^fish_color_(\S+) ?(.*)", line):
color_name, color_value = [x.strip() for x in match.group(1, 2)]
color_desc = descriptions.get(color_name, "")
data = {"name": color_name, "description": color_desc}
data.update(parse_color(color_value))
result.append(data)
remaining.discard(color_name)
# Sort our result (by their keys)
result.sort(key=operator.itemgetter("name"))
# Ensure that we have all the color names we know about, so that if the
# user deletes one he can still set it again via the web interface
for color_name in remaining:
color_desc = descriptions.get(color_name, "")
result.append([color_name, color_desc, parse_color("")])
return result
def do_get_functions(self):
out, err = run_fish_cmd("functions")
out = out.strip()
# Not sure why fish sometimes returns this with newlines
if "\n" in out:
return out.split("\n")
else:
return out.strip().split(", ")
def do_get_variable_names(self, cmd):
" Given a command like 'set -U' return all the variable names "
out, err = run_fish_cmd(cmd)
return out.split("\n")
def do_get_variables(self):
out, err = run_fish_cmd("set -L")
# Put all the variables into a dictionary
vars = {}
for line in out.split("\n"):
comps = line.split(" ", 1)
if len(comps) < 2:
continue
fish_var = FishVar(comps[0], comps[1])
vars[fish_var.name] = fish_var
# Mark universal variables. L means don't abbreviate.
for name in self.do_get_variable_names("set -nUL"):
if name in vars:
vars[name].universal = True
# Mark exported variables. L means don't abbreviate.
for name in self.do_get_variable_names("set -nxL"):
if name in vars:
vars[name].exported = True
return [
vars[key].get_json_obj()
for key in sorted(vars.keys(), key=lambda x: x.lower())
]
def do_get_bindings(self):
""" Get key bindings """
# Running __fish_config_interactive print fish greeting and
# loads key bindings
greeting, err = run_fish_cmd(" __fish_config_interactive")
# Load the key bindings and then list them with bind
out, err = run_fish_cmd("__fish_config_interactive; bind")
# Remove fish greeting from output
out = out[len(greeting) :]
# Put all the bindings into a list
bindings = []
command_to_binding = {}
binding_parser = BindingParser()
for line in out.split("\n"):
comps = line.split(" ", 2)
# If we don't have "bind", a sequence and a mapping,
# it's not a valid binding.
if len(comps) < 3:
continue
# Store the "--preset" value for later
if comps[1] == "--preset":
preset = True
# There's possibly a way to do this faster, but it's not important.
comps = line.split(" ", 3)[1:]
elif comps[1] == "--user":
preset = False
comps = line.split(" ", 3)[1:]
# Check again if we removed the level.
if len(comps) < 3:
continue
if comps[1] == "-k":
key_name, command = comps[2].split(" ", 1)
binding_parser.set_buffer(key_name.capitalize())
else:
key_name = None
command = comps[2]
binding_parser.set_buffer(comps[1])
if command in bindings_blacklist:
continue
readable_binding = binding_parser.get_readable_binding()
if command in command_to_binding:
fish_binding = command_to_binding[command]
fish_binding.add_binding(line, readable_binding)
else:
fish_binding = FishBinding(command, line, readable_binding)
bindings.append(fish_binding)
command_to_binding[command] = fish_binding
return [binding.get_json_obj() for binding in bindings]
def do_get_history(self):
# Use NUL to distinguish between history items.
out, err = run_fish_cmd("builtin history -z")
result = out.split("\0")
if result:
result.pop() # trim off the trailing element
return result
def do_get_color_for_variable(self, name):
# Return the color with the given name, or the empty string if there is
# none.
out, err = run_fish_cmd("echo -n $" + name)
return out
def do_set_color_for_variable(
self, name, color, background_color, bold, underline, italics, dim, reverse
):
"Sets a color for a fish color name, like 'autosuggestion'"
if not color:
color = "normal"
varname = "fish_color_" + name
# If the name already starts with "fish_", use it as the varname
# This is needed for 'fish_pager_color' vars.
if name.startswith("fish_"):
varname = name
# TODO: Check if the varname is allowable.
command = "set -U " + varname
if color:
command += " " + color
if background_color:
command += " --background=" + background_color
if bold:
command += " --bold"
if underline:
command += " --underline"
if italics:
command += " --italics"
if dim:
command += " --dim"
if reverse:
command += " --reverse"
out, err = run_fish_cmd(command)
return out
def do_get_function(self, func_name):
out, err = run_fish_cmd("functions " + func_name + " | fish_indent --html")
return out
def do_delete_history_item(self, history_item_text):
# It's really lame that we always return success here
cmd = (
"builtin history delete --case-sensitive --exact -- %s; builtin history save"
% escape_fish_cmd(history_item_text)
)
out, err = run_fish_cmd(cmd)
return True
def do_set_prompt_function(self, prompt_func):
cmd = prompt_func + "\n" + "funcsave fish_prompt"
out, err = run_fish_cmd(cmd)
return len(err) == 0
def do_get_prompt(self, command_to_run, prompt_function_text, extras_dict):
# Return the prompt output by the given command
prompt_demo_ansi, err = run_fish_cmd(command_to_run)
prompt_demo_html = ansi_to_html(prompt_demo_ansi)
prompt_demo_font_size = self.font_size_for_ansi_prompt(prompt_demo_ansi)
result = {
"function": prompt_function_text,
"demo": prompt_demo_html,
"font_size": prompt_demo_font_size,
}
if extras_dict:
result.update(extras_dict)
return result
def do_get_current_prompt(self):
# Return the current prompt. We run 'false' to demonstrate how the
# prompt shows the command status (#1624).
prompt_func, err = run_fish_cmd("functions fish_prompt")
result = self.do_get_prompt(
'builtin cd "' + initial_wd + '" ; false ; fish_prompt',
prompt_func.strip(),
{"name": "Current"},
)
return result
def do_get_sample_prompt(self, text, extras_dict):
# Return the prompt you get from the given text. Extras_dict is a
# dictionary whose values get merged in. We run 'false' to demonstrate
# how the prompt shows the command status (#1624)
cmd = text + '\n builtin cd "' + initial_wd + '" \n false \n fish_prompt\n'
return self.do_get_prompt(cmd, text.strip(), extras_dict)
def parse_one_sample_prompt_hash(self, line, result_dict):
# Allow us to skip whitespace, etc.
if not line:
return True
if line.isspace():
return True
# Parse a comment hash like '# name: Classic'
match = re.match(r"#\s*(\w+?): (.+)", line, re.IGNORECASE)
if match:
key = match.group(1).strip()
value = match.group(2).strip()
result_dict[key] = value
return True
# Skip other hash comments
return line.startswith("#")
def read_one_sample_prompt(self, path):
try:
with open(path, "rb") as fd:
extras_dict = {}
# Read one sample prompt from fd
function_lines = []
parsing_hashes = True
unicode_lines = (line.decode("utf-8") for line in fd)
for line in unicode_lines:
# Parse hashes until parse_one_sample_prompt_hash return
# False.
if parsing_hashes:
parsing_hashes = self.parse_one_sample_prompt_hash(
line, extras_dict
)
# Maybe not we're not parsing hashes, or maybe we already
# were not.
if not parsing_hashes:
function_lines.append(line)
func = "".join(function_lines).strip()
result = self.do_get_sample_prompt(func, extras_dict)
return result
except IOError:
# Ignore unreadable files, etc.
return None
def do_get_sample_prompts_list(self):
pool = multiprocessing.pool.ThreadPool(processes=8)
# Kick off the "Current" meta-sample
current_metasample_async = pool.apply_async(self.do_get_current_prompt)
# Read all of the prompts in sample_prompts
paths = glob.iglob("sample_prompts/*.fish")
sample_results = pool.map(self.read_one_sample_prompt, paths, 1)
# Finish up
result = []
result.append(current_metasample_async.get())
result.extend([r for r in sample_results if r])
return result
def do_get_abbreviations(self):
# Example abbreviation line:
# abbr -a -U -- ls 'ls -a'
result = []
out, err = run_fish_cmd("abbr --show")
for line in out.rstrip().split("\n"):
if not line:
continue
_, abbr = line.split(" -- ", 1)
word, phrase = abbr.split(" ", 1)
result.append({"word": word, "phrase": phrase})
return result
def do_remove_abbreviation(self, abbreviation):
out, err = run_fish_cmd("abbr --erase %s" % abbreviation["word"])
if err:
return err
else:
return None
def do_save_abbreviation(self, abbreviation):
out, err = run_fish_cmd(
# Remove one layer of single-quotes because escape_fish_cmd adds them back.
"abbr --add %s %s" % (escape_fish_cmd(abbreviation["word"].strip("'")), escape_fish_cmd(abbreviation["phrase"].strip("'")))
)
if err:
return err
else:
return None
def secure_startswith(self, haystack, needle):
if len(haystack) < len(needle):
return False
bits = 0
for x, y in zip(haystack, needle):
bits |= ord(x) ^ ord(y)
return bits == 0
def font_size_for_ansi_prompt(self, prompt_demo_ansi):
width = ansi_prompt_line_width(prompt_demo_ansi)
# Pick a font size
if width >= 70:
font_size = "8pt"
if width >= 60:
font_size = "10pt"
elif width >= 50:
font_size = "11pt"
elif width >= 40:
font_size = "13pt"
elif width >= 30:
font_size = "15pt"
elif width >= 25:
font_size = "16pt"
elif width >= 20:
font_size = "17pt"
else:
font_size = "18pt"
return font_size
def do_GET(self):
p = self.path
authpath = "/" + authkey
if self.secure_startswith(p, authpath):
p = p[len(authpath) :]
else:
return self.send_error(403)
self.path = p
if p == "/colors/":
output = self.do_get_colors()
elif p == "/functions/":
output = self.do_get_functions()
elif p == "/variables/":
output = self.do_get_variables()
elif p == "/history/":
# start = time.time()
output = self.do_get_history()
# end = time.time()
# print "History: ", end - start
elif p == "/sample_prompts/":
output = self.do_get_sample_prompts_list()
elif re.match(r"/color/(\w+)/", p):
name = re.match(r"/color/(\w+)/", p).group(1)
output = self.do_get_color_for_variable(name)
elif p == "/bindings/":
output = self.do_get_bindings()
elif p == "/abbreviations/":
output = self.do_get_abbreviations()
else:
return SimpleHTTPServer.SimpleHTTPRequestHandler.do_GET(self)
# Return valid output
self.send_response(200)
self.send_header("Content-type", "application/json")
self.end_headers()
self.write_to_wfile("\n")
# Output JSON
self.write_to_wfile(json.dumps(output))
def do_POST(self):
p = self.path
authpath = "/" + authkey
if self.secure_startswith(p, authpath):
p = p[len(authpath) :]
else:
return self.send_error(403)
self.path = p
ctype, pdict = cgi.parse_header(self.headers["content-type"])
if ctype == "multipart/form-data":
postvars = cgi.parse_multipart(self.rfile, pdict)
elif ctype == "application/x-www-form-urlencoded":
length = int(self.headers["content-length"])
url_str = self.rfile.read(length).decode("utf-8")
postvars = parse_qs(url_str, keep_blank_values=1)
elif ctype == "application/json":
length = int(self.headers["content-length"])
url_str = self.rfile.read(length).decode(pdict["charset"])
postvars = json.loads(url_str)
else:
postvars = {}
if p == "/set_color/":
what = postvars.get("what")
color = postvars.get("color")
background_color = postvars.get("background_color")
bold = postvars.get("bold")
italics = postvars.get("italics")
reverse = postvars.get("reverse")
dim = postvars.get("dim")
underline = postvars.get("underline")
if what:
# Not sure why we get lists here?
output = self.do_set_color_for_variable(
what[0],
color[0],
background_color[0],
parse_bool(bold[0]),
parse_bool(underline[0]),
parse_bool(italics[0]),
parse_bool(dim[0]),
parse_bool(reverse[0]),
)
else:
output = "Bad request"
elif p == "/get_function/":
what = postvars.get("what")
output = [self.do_get_function(what[0])]
elif p == "/delete_history_item/":
what = postvars.get("what")
if self.do_delete_history_item(what[0]):
output = ["OK"]
else:
output = ["Unable to delete history item"]
elif p == "/set_prompt/":
what = postvars.get("fish_prompt")
if self.do_set_prompt_function(what):
output = ["OK"]
else:
output = ["Unable to set prompt"]
elif p == "/save_abbreviation/":
errmsg = self.do_save_abbreviation(postvars)
if errmsg:
output = [errmsg]
else:
output = ["OK"]
elif p == "/remove_abbreviation/":
errmsg = self.do_remove_abbreviation(postvars)
if errmsg:
output = [errmsg]
else:
output = ["OK"]
else:
return self.send_error(404)
# Return valid output
self.send_response(200)
self.send_header("Content-type", "application/json")
self.end_headers()
self.write_to_wfile("\n")
# Output JSON
self.write_to_wfile(json.dumps(output))
def log_request(self, code="-", size="-"):
""" Disable request logging """
pass
def log_error(self, format, *args):
if format == "code %d, message %s":
# This appears to be a send_error() message
# We want to include the path
(code, msg) = args
format = "code %d, message %s, path %s"
args = (code, msg, self.path)
SimpleHTTPServer.SimpleHTTPRequestHandler.log_error(self, format, *args)
redirect_template_html = """
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="refresh" content="0;URL='%s'" />
</head>
<body>
<p><a href="%s">Start the Fish Web config</a></p>
</body>
</html>
"""
# find fish
fish_bin_dir = os.environ.get("__fish_bin_dir")
fish_bin_path = None
if not fish_bin_dir:
print("The $__fish_bin_dir environment variable is not set. " "Looking in $PATH...")
# distutils.spawn is terribly broken, because it looks in wd before PATH,
# and doesn't actually validate that the file is even executable
for p in os.environ["PATH"].split(os.pathsep):
proposed_path = os.path.join(p, "fish")
if os.access(proposed_path, os.X_OK):
fish_bin_path = proposed_path
break
if not fish_bin_path:
print("fish could not be found. Is fish installed correctly?")
sys.exit(-1)
else:
print("fish found at '%s'" % fish_bin_path)
else:
fish_bin_path = os.path.join(fish_bin_dir, "fish")
if not os.access(fish_bin_path, os.X_OK):
print(
"fish could not be executed at path '%s'. "
"Is fish installed correctly?" % fish_bin_path
)
sys.exit(-1)
FISH_BIN_PATH = fish_bin_path
# We want to show the demo prompts in the directory from which this was invoked,
# so get the current working directory
initial_wd = os.getcwd()
# Make sure that the working directory is the one that contains the script
# server file, because the document root is the working directory.
where = os.path.dirname(sys.argv[0])
os.chdir(where)
# Generate a 16-byte random key as a hexadecimal string
authkey = binascii.b2a_hex(os.urandom(16)).decode("ascii")
# Try to find a suitable port
PORT = 8000
HOST = "::" if socket.has_ipv6 else "localhost"
while PORT <= 9000:
try:
Handler = FishConfigHTTPRequestHandler
httpd = FishConfigTCPServer((HOST, PORT), Handler)
# Success
break
except socket.error:
err_type, err_value = sys.exc_info()[:2]
# str(err_value) handles Python3 correctly
if "Address already in use" not in str(err_value):
print(str(err_value))
break
PORT += 1
if PORT > 9000:
# Nobody say it
print("Unable to find an open port between 8000 and 9000")
sys.exit(-1)
# Get any initial tab (functions, colors, etc)
# Just look at the first letter
initial_tab = ""
if len(sys.argv) > 1:
for tab in [
"functions",
"prompt",
"colors",
"variables",
"history",
"bindings",
"abbreviations",
]:
if tab.startswith(sys.argv[1]):
initial_tab = "#" + tab
break
url = "http://localhost:%d/%s/%s" % (PORT, authkey, initial_tab)
# Create temporary file to hold redirect to real server. This prevents exposing
# the URL containing the authentication key on the command line (see
# CVE-2014-2914 or https://github.com/fish-shell/fish-shell/issues/1438).
if "XDG_CACHE_HOME" in os.environ:
dirname = os.path.expanduser(os.path.expandvars("$XDG_CACHE_HOME/fish/"))
else:
dirname = os.path.expanduser("~/.cache/fish/")
os.umask(0o0077)
try:
os.makedirs(dirname, 0o0700)
except OSError as e:
if e.errno == 17:
pass
else:
raise e
randtoken = "".join(
random.choice(string.ascii_uppercase + string.digits) for _ in range(6)
)
filename = dirname + "web_config-%s.html" % randtoken
f = open(filename, "w")
f.write(redirect_template_html % (url, url))
f.close()
# Open temporary file as URL
# Use open on macOS >= 10.12.5 to work around #4035.
fileurl = "file://" + filename
esc = get_special_ansi_escapes()
print(
"Web config started at %s%s%s"
% (esc["underline"], fileurl, esc["exit_attribute_mode"])
)
print("%sHit ENTER to stop.%s" % (esc["bold"], esc["exit_attribute_mode"]))
if isMacOS10_12_5_OrLater():
subprocess.check_call(["open", fileurl])
elif is_wsl():
subprocess.call(["cmd.exe", "/c", "start %s" % url])
elif is_termux():
subprocess.call(["termux-open-url", url])
else:
webbrowser.open(fileurl)
# Select on stdin and httpd
stdin_no = sys.stdin.fileno()
try:
while True:
ready_read = select.select([sys.stdin.fileno(), httpd.fileno()], [], [])
if ready_read[0][0] < 1:
print("Shutting down.")
# Consume the newline so it doesn't get printed by the caller
sys.stdin.readline()
break
else:
httpd.handle_request()
except KeyboardInterrupt:
print("\nShutting down.")
# Clean up temporary file
os.remove(filename)
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