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#!/usr/bin/ruby
#
# Copyright (c) 2011 Giorgio Gonnella <gonnella@zbh.uni-hamburg.de>
# Copyright (c) 2011 Center for Bioinformatics, University of Hamburg
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
usage = <<-end_usage
Usage:
#$0 <templatefilename> <suffix> [<identifier>+]
Find macro names, function names and typedefs in a C file (templatefilename)
and append "_" followed by the specified suffix to these identifiers and to
further identifiers specified as optional arguments.
end_usage
if ARGV.size < 2 || !File.exists?(ARGV[0])
puts usage
exit
end
class IdentifiersCollection
attr_reader :macros, :functions, :types
def initialize(c_code)
uncommented = delcomments(c_code)
toplevel = delblocks(uncommented)
@macros = findmacronames(toplevel)
notpreproc_toplevel = delpreproc(toplevel)
@functions = findfunctionnames(notpreproc_toplevel)
@types = findtypes(notpreproc_toplevel)
end
private
def delcomments(input)
output = ""
prevc = nil
state = :code
input.each_byte do |c|
if state == :comment
state = :code if c == ?/ and prevc == ?*
else
if c == ?* and prevc == ?/
state = :comment
output.chop!
else
output << c
end
end
prevc = c
end
return output
end
def delblocks(uncommented)
output = ""
level = 0
uncommented.each_byte do |c|
level += 1 if c == ?{
output << c if level == 0
level -= 1 if c == ?}
end
return output
end
def delpreproc(input)
state = :notpreproc
prevc = nil
output = ""
input.each_byte do |c|
if state == :preproc
state = :notpreproc if c == ?\n and prevc != ?\\
else
if c == ?#
state = :preproc
else
output << c
end
end
prevc = c
end
return output
end
def findmacronames(toplevel)
toplevel.scan(/#\s*define\s(\w+)/).flatten
end
def findfunctionnames(notpreproc_toplevel)
notpreproc_toplevel.scan(/(\w+)\s*\([^\*].*?\)/m).flatten
end
def findtypes(notpreproc_toplevel)
notpreproc_toplevel.scan(/typedef\s+[^;]*\s+(\w+)\s*;/m).flatten
end
end
class CCode
def initialize(c_code)
@code = c_code
@ids = IdentifiersCollection.new(c_code)
end
def append_suffix!(suffix, more_identifiers = [])
ids = more_identifiers
[:macros, :functions, :types].each do |idtype|
ids += @ids.send(idtype)
end
ids.each do |id|
@code.gsub!(/(\W+)(#{id})(\W+)/m) {"#$1#$2_#{suffix}#$3"}
end
end
def to_s
@code
end
end
input = IO.read(ARGV.shift)
suffix = ARGV.shift
more_identifiers = ARGV
code = CCode.new(input)
code.append_suffix!(suffix, more_identifiers)
print code
|
