mirror of
https://github.com/fish-shell/fish-shell
synced 2024-12-29 14:23:09 +00:00
299 lines
8.3 KiB
Python
Executable file
299 lines
8.3 KiB
Python
Executable file
#!/usr/bin/env python
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"""
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<OWNER> = Siteshwar Vashisht
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<YEAR> = 2012
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Copyright (c) 2012, Siteshwar Vashisht
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""
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import os, sys, re
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config_file = None
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prompt_buff = ""
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i = 0
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quote_started = False
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bash_builtins = ["export"]
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#Remove leading and trailing single quotes from a string
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def remove_single_quotes(input):
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start = 0
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end = len(input)
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if input[0] == "'":
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start = 1
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if input[end-1] == "'":
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end = end - 1
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return input[start:end]
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#Find outside quotes
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def contains_outside_quotes(input, ch):
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in_quotes = False
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i = 0
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while i < len(input):
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if input[i] == ch and in_quotes == False:
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return True
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elif input[i] == '\\' and in_quotes == True:
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i = i+1
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elif input[i] == '"':
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in_quotes = not in_quotes
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elif input[i] == "'" and not in_quotes:
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i = i + 1
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while input[i] != "'":
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i = i + 1
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i = i + 1
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return False
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#Replace characters outside double quotes
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def replace_outside_quotes(input, oldchar, newchar, change_all = True):
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in_quotes = False
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newstr = []
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i = 0
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while i < len(input):
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if input[i] == oldchar and in_quotes == False:
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newstr.append(newchar)
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i = i+1
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if change_all == True:
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continue
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else:
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while i < len(input):
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newstr.append(input[i])
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i = i + 1
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#Break loop and return all the characters in list by joining them
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break
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elif input[i] == '\\' and in_quotes == True:
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newstr.append(input[i])
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i = i+1
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elif input[i] == '"':
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in_quotes=not in_quotes
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elif input[i] == "'" and not in_quotes:
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newstr.append(input[i])
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i = i + 1
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while input[i] != "'":
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newstr.append(input[i])
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i = i + 1
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newstr.append(input[i])
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i = i + 1
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return ''.join(newstr)
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#Parse input passed to the script
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def parse_input(input):
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env_regex = re.compile("(.*?)=(.*)")
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env_regex_matched = re.search(env_regex, input)
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while env_regex_matched != None:
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env_name = env_regex_matched.group(1)
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env_value = env_regex_matched.group(2)
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env_var = env_regex_matched.group(0)
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if env_name[:5] == "alias":
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add_alias(env_name[6:], env_value)
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elif env_name == "PS1":
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parse_bash_prompt(env_value)
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elif env_name == "PATH":
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config_file.write("set -x " + env_name + ' ' + env_value.replace(":"," ") )
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else:
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config_file.write("set_default " + env_name + ' "' + env_value + '"')
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#Move to next line
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config_file.write("\n")
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input = input[env_regex_matched.end():]
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env_regex_matched = re.search(env_regex, input)
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#Add an alias as a function in fish
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def add_alias(alias_name, alias_value):
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alias_value = remove_single_quotes(alias_value)
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while contains_outside_quotes(alias_value,"`"):
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alias_value = replace_outside_quotes(alias_value, '`', '(', False)
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alias_value = replace_outside_quotes(alias_value, '`', ')', False)
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config_file.write("function " + alias_name)
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for line in alias_value.split(";"):
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line = line.strip()
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tokens = line.split(' ')
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first_token = tokens[0].strip()
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if first_token in bash_builtins:
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sys.stderr.write("{0} is a bash builtin".format(first_token, ))
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if first_token == "export":
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var_regex = re.compile("(.*?)=(.*)")
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var_regex_matched = re.search(var_regex, line[7:])
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if var_regex_matched != None:
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stripped_name = var_regex_matched.group(1).strip()
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config_file.write("\n\tset -gx " + var_regex_matched.group(1).strip() + " " + var_regex_matched.group(2).strip())
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else:
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export_name = line[6:].strip()
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config_file.write("\n\tset -gx " + export_name + " $" + export_name )
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elif "=" in first_token:
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var_regex = re.compile("(.*?)=(.*)")
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var_regex_matched = re.search(var_regex, line)
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if var_regex_matched != None:
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stripped_name = var_regex_matched.group(1).strip()
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config_file.write("\n\tset " + var_regex_matched.group(1).strip() + " " + var_regex_matched.group(2).strip() )
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else:
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if len(line.strip()) > 0:
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config_file.write( "\n\t" + line.strip() )
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config_file.write(" $argv\nend;\n")
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def parse_control_sequence():
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ch = next_prompt_char()
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ch2 = None
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while (ch != ""):
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if ch == "\\":
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ch2 = next_prompt_char()
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if (ch2 == "]"):
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return
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ch = next_prompt_char()
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def is_digit(ch):
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if ch>='0' and ch<='9':
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return True
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return False
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def set_prompt_buff(value):
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global i, buff
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i = 0
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buff = value
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def next_prompt_char():
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global i, buff
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if (i < len(buff)):
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next = buff[i]
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i = i+1
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else:
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next = ""
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return next
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def unget_prompt_char():
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global i
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i = i - 1
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def add_to_echo(str, is_special=True):
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global quote_started
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if (is_special == True):
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if (quote_started == True):
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config_file.write('"')
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quote_started = False
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else:
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if (quote_started == False):
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config_file.write('"')
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quote_started = True
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config_file.write(str)
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def check_end_quote():
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global quote_started
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if quote_started == True:
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config_file.write('"')
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def parse_bash_prompt(bash_prompt):
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set_prompt_buff(bash_prompt)
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config_file.write("function fish_prompt\n")
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if ("\\$" in bash_prompt):
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config_file.write("\tif test (id -u) -eq \"0\"\n")
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config_file.write("\t\tset uid_prompt \"#\"\n")
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config_file.write("\telse\n")
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config_file.write("\t\tset uid_prompt \"\\$\"\n")
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config_file.write("\tend;\n")
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config_file.write('\techo -n ')
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ch = next_prompt_char()
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ch2 = None
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while (ch != ""):
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if ( ch == "\\"):
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ch2 = next_prompt_char()
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if (ch2 == ""):
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continue
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elif (ch2 == "a"):
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add_to_echo('\\a')
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elif (ch2 == "d"):
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add_to_echo('(date +"%a %b %d")')
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elif (ch2 == "e"):
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sys.std.out.write('\e')
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elif (ch2 == "h"):
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add_to_echo("(hostname | cut -d\".\" -f1)")
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elif (ch2 == "H"):
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add_to_echo("(hostname)")
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elif (ch2 == "j"):
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add_to_echo("(jobs | wc -l)")
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elif (ch2 == "l"):
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add_to_echo("basename (tty)")
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elif (ch2 == "n"):
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add_to_echo(' \\n ')
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elif (ch2 == "r"):
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add_to_echo(' \\r ')
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elif (ch2 == "s"):
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add_to_echo("fish", False)
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elif (ch2 == "t"):
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add_to_echo('(date +"%H:%M:%S")')
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elif (ch2 == "T"):
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add_to_echo('(date +"%I:%M:%S")')
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elif (ch2 == "@"):
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add_to_echo('(date +"%I:%M %p")')
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elif (ch2 == "u"):
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add_to_echo("$USER")
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elif (ch2 == "w"):
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add_to_echo("(pwd)")
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elif (ch2 == "W"):
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add_to_echo("(basename ( pwd ) )")
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elif (ch2 == "$"):
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add_to_echo(" $uid_prompt ")
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elif (is_digit(ch2)):
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temp = int(ch2)
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ch = next_prompt_char()
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if (is_digit(ch)):
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temp = (temp*8) + int(ch)
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else:
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add_to_echo(chr(temp), False)
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unget_prompt_char()
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ch = next_prompt_char()
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if (is_digit(ch)):
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temp = ((temp/10)*64) + ((temp%10)*8) + int(ch)
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add_to_echo(chr(temp), False)
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else:
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add_to_echo(chr(temp), False)
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unget_prompt_char()
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elif (ch2 == "\\"):
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add_to_echo("\\")
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elif (ch2 == "["):
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parse_control_sequence()
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elif (ch2 == "]"):
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print("Unexpected ]")
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elif (ch2 == "v" or ch2 == "V"):
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add_to_echo("(fish -v 2>| cut -d\" \" -f3)")
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else:
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print("Unknown escape character")
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else:
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add_to_echo(ch,False)
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ch = next_prompt_char()
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check_end_quote()
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config_file.write("\nend\n")
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if __name__ == "__main__":
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input = sys.stdin.read()
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config_file = open("{0}/.config/fish/bash_config.fish".format(os.environ["HOME"]),"a")
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parse_input(input)
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