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# Copyright (C) 2007 Stephen Bach
#
# Permission is hereby granted to use and distribute this code, with or without
# modifications, provided that this copyright notice is copied with it. Like
# anything else that's free, this file is provided *as is* and comes with no
# warranty of any kind, either expressed or implied. In no event will the
# copyright holder be liable for any damages resulting from the use of this
# software.
module VIM
unless const_defined? "MOST_POSITIVE_INTEGER"
MOST_POSITIVE_INTEGER = 2**(32 - 1) - 2 # Vim ints are signed 32-bit.
end
def self.zero?(var)
# In Vim 7.2 and older, VIM::evaluate returns Strings for boolean
# expressions; in later versions, Fixnums.
case var
when String
var == "0"
when Fixnum
var == 0
else
LustyM::assert(false, "unexpected type: #{var.class}")
end
end
def self.nonzero?(var)
not zero?(var)
end
def self.evaluate_bool(var)
nonzero? evaluate(var)
end
def self.exists?(s)
nonzero? evaluate("exists('#{s}')")
end
def self.has_syntax?
nonzero? evaluate('has("syntax")')
end
def self.has_ext_maparg?
# The 'dict' parameter to mapargs() was introduced in Vim 7.3.32
nonzero? evaluate('v:version > 703 || (v:version == 703 && has("patch32"))')
end
def self.columns
evaluate("&columns").to_i
end
def self.lines
evaluate("&lines").to_i
end
def self.getcwd
evaluate("getcwd()")
end
def self.bufname(i)
if evaluate_bool("empty(bufname(#{i}))")
"<Unknown #{i}>"
else
evaluate("bufname(#{i})")
end
end
def self.single_quote_escape(s)
# Everything in a Vim single-quoted string is literal, except single
# quotes. Single quotes are escaped by doubling them.
s.gsub("'", "''")
end
def self.regex_escape(s)
s.gsub(/[\]\[.~"^$\\*]/,'\\\\\0')
end
class Buffer
def modified?
VIM::nonzero? VIM::evaluate("getbufvar(#{number()}, '&modified')")
end
def listed?
VIM::nonzero? VIM::evaluate("getbufvar(#{number()}, '&buflisted')")
end
def self.obj_for_bufnr(n)
# There's gotta be a better way to do this...
(0..VIM::Buffer.count-1).each do |i|
obj = VIM::Buffer[i]
return obj if obj.number == n
end
return nil
end
end
# Print with colours
def self.pretty_msg(*rest)
return if rest.length == 0
return if rest.length % 2 != 0
command "redraw" # see :help echo-redraw
i = 0
while i < rest.length do
command "echohl #{rest[i]}"
command "echon '#{rest[i+1]}'"
i += 2
end
command 'echohl None'
end
end
# Hack for wide CJK characters.
if VIM::exists?("*strwidth")
module VIM
def self.strwidth(s)
# strwidth() is defined in Vim 7.3.
evaluate("strwidth('#{single_quote_escape(s)}')").to_i
end
end
else
module VIM
def self.strwidth(s)
s.length
end
end
end
if VIM::exists?("*fnameescape")
module VIM
def self.filename_escape(s)
# Escape slashes, open square braces, spaces, sharps, double
# quotes and percent signs, and remove leading ./ for files in
# pwd.
single_quote_escaped = single_quote_escape(s)
evaluate("fnameescape('#{single_quote_escaped}')").sub(/^\.\//,"")
end
end
else
module VIM
def self.filename_escape(s)
# Escape slashes, open square braces, spaces, sharps, double
# quotes and percent signs, and remove leading ./ for files in
# pwd.
s.gsub(/\\/, '\\\\\\').gsub(/[\[ #"%]/, '\\\\\0').sub(/^\.\//,"")
end
end
end
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