#! /usr/bin/env python

import sys;
import os;

class Reader():
    def __init__(self, suffix, stp):
        self.suffix = suffix;
        self._stop  = stp;
    #
    def checkOk(self, pathname):
        for suffix in self.suffix:
            if pathname.endswith(suffix):
                return True;
        return False;
    def read(self, pathname):
        f = open(pathname, 'r');
        input_string = f.read();
        f.close();
        return self.getOutputString(input_string);
    def getOutputString(self, input_string):
        return ''
    def stop(self):
        return self._stop;
#
class AsciidocReader(Reader):
    def __init__(self):
        Reader.__init__(self, ['.asciidoc',
                               '.adoc',
                               '.ascii',
                              ],
                       True);
    def getOutputString(self, input_string):
        return input_string;
#
class InReader(Reader):
    def __init__(self, suffix, start_string, end_string):
        Reader.__init__(self, suffix, False)
        self.start_string = start_string
        self.  end_string =   end_string
    def getOutputString(self, input_string):
        start_index = 0
        ret = ''
        while True:
            start = input_string.find(self.start_string, start_index)
            if start == -1:
                break
            end = input_string.find(self.end_string,
                                    start + len(self.start_string))
            if end == -1:
                break
            start_index = end + len(self.end_string)
            ret += input_string[start + len(self.start_string) : end]
        index = 0
        while index < len(ret):
            if index == 0 or ret[index - 1] == "\n":
                if ret[index] == ' ' or ret == "\t":
                    ret = ret[:index] + ret[index + 1:]
                else:
                    index += 1
            else:
                index += 1
        return ret
#
class InLineReader(Reader):
    def __init__(self, suffix, prefix):
        Reader.__init__(self, suffix, False)
        self.prefix = prefix
    def getOutputString(self, input_string):
        ret = ''
        line_begin = 0
        while line_begin < len(input_string):
            line_end = line_begin
            for line_end in range(line_begin, len(input_string) + 1):
                if input_string[line_end] == "\n":
                    break
            ok = False
            for i in range(line_begin, line_end - len(self.prefix) + 1):
                if input_string[i : i + len(self.prefix)] == self.prefix:
                    ok = True
                    break
            if ok:
                start = i + len(self.prefix)
                while start < line_end:
                    if input_string[start]!=' ' and input_string[start]!="\t":
                        break
                    start += 1
                ret += input_string[start: line_end].replace('\\', " +\n")+"\n"
            line_begin = line_end + 1
        return ret;
#
class CppReader(InReader):
    def __init__(self):
        InReader.__init__(self,
                          ['.c', '.cpp', '.h', '.hpp'],
                          '@asciidoc',
                          '@asciidoc-')
class CppLineReader(InLineReader):
    def __init__(self):
        InLineReader.__init__(self, ['.c', '.cpp', '.h', '.hpp'], '//#');
#
readers = [AsciidocReader(),
           CppReader(),
           CppLineReader(),
          ];

if len(sys.argv) <= 1: readme = 'README.asciidoc';
else                 : readme = sys.argv[1];

readme_f = open(readme, 'w');
footer_n = 'footer';

footer_lst = [];

for (root, sub_folders, files) in os.walk('./'):
    files.sort();
    sub_folders.sort();
    for reader in readers:
        deleted = []
        tmp1 = []
        tmp2 = []
        for filename in files:
            if filename.find(footer_n) == -1:
                tmp1.append(filename)
            else:
                if not os.path.join(root, filename) in footer_lst:
                    footer_lst.append(os.path.join(root, filename))
        files = tmp1
        for filename in files:
            path = os.path.join(root, filename)
            if path == './' + readme:
                continue
            if reader.checkOk(filename):
                s = reader.read(path)
                if len(s) > 0:
                    print 'Get asciidoc from ' + path
                    dir_name = ''
                    dirs_ct = 0
                    for i in range(0, len(root)):
                        if root[i] == '/':
                            dirs_ct += 1
                            dir_name = root[i + 1:] + '/'
                    if dir_name != '/':
                        readme_f.write('\n');
                        readme_f.write('=' * (dirs_ct + 2) + ' ' + dir_name);
                        readme_f.write('\n');
                    readme_f.write(s)
                if reader.stop():
                    deleted.append(filename)
        for filename in deleted:
            files.remove(filename)
for reader in readers:
    deleted = []
    for path in footer_lst:
        if path == './' + readme:
            continue
        if reader.checkOk(path):
            s = reader.read(path)
            if len(s) > 0:
                print 'Get asciidoc from ' + path
            readme_f.write(s)
            if reader.stop():
                deleted.append(path)
    for filename in deleted:
        footer_lst.remove(filename)
readme_f.close()