Module: Rant::C::Include

Defined in:
lib/rant/c/include.rb

Class Method Summary collapse

Class Method Details

.parse_includes(src) ⇒ Object

Searches for all ‘#include’ statements in the C/C++ source from the string src.

Returns two arguments:

  1. A list of all standard library includes (e.g. #include <stdio.h>).

  2. A list of all local includes (e.g. #include “stdio.h”).



15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
 
# File 'lib/rant/c/include.rb', line 15

def parse_includes(src)
    if src.respond_to? :to_str
	src = src.to_str
    else
	raise ArgumentError, "src has to be a string"
    end
    s_includes = []
    l_includes = []
    in_block_comment = false
    prev_line = nil
    src.each { |line|
	line.chomp!
               if block_start_i = line.index("/*")
                   c_start_i = line.index("//")
                   if !c_start_i || block_start_i < c_start_i
                       if block_end_i = line.index("*/")
                           if block_end_i > block_start_i
                               line[block_start_i..block_end_i+1] = ""
                           end
                       end
                   end
               end
	if prev_line
	    line = prev_line << line
	    prev_line = nil
	end
	if line =~ /\\$/
	    prev_line = line.chomp[0...line.length-1]
	end
	if in_block_comment
	    in_block_comment = false if line =~ %r|\*/|
	    next
	end
	case line
	when /\s*#\s*include\s+"([^"]+)"/
	    l_includes << $1
	when /\s*#\s*include\s+<([^>]+)>/
	    s_includes << $1
	when %r|(?!//)[^/]*/\*|
	    in_block_comment = true
	end
    }
    [s_includes, l_includes]
end