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= LangScan - program analyzer for source code search engine
== Requirement
* Ruby 1.8
* flex 2.5.31 (flex 2.5.4 doesn't work)
== Examples
=== Example1
% cat -n hello.c
1 #include <stdio.h>
2
3 int main(int argc, char **argv)
4 {
5 printf("Hello World.\n");
6 return 0;
7 }
% ruby -rlangscan/c -e 'LangScan::C.scan(ARGF.readlines.join) {|f| p f}' < hello.c
#<LangScan::Fragment space " " 1 (8)>
#<LangScan::Fragment ident "stdio" 1 (10)>
#<LangScan::Fragment punct "." 1 (15)>
#<LangScan::Fragment space "\n" 2 (19)>
#<LangScan::Fragment space " " 3 (23)>
#<LangScan::Fragment preproc_beg "#" 1 (0)>
#<LangScan::Fragment ident "include" 1 (1)>
...
=== Example2
% cat -n display_fundef.rb
1 require 'langscan'
2
3 # display all function definitions.
4 ARGV.each {|arg|
5 next unless scanner = LangScan.choose(arg)
6 scanner.scan(File.open(arg).readlines.join) {|f|
7 if f.type == :fundef
8 puts f.text
9 end
10 }
11 }
% ruby display_fundef.rb hello.c
main
== Authors
See `AUTHORS'
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