# -*- coding: utf-8 -*-
## $Id$

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## Copyright (C) 2002, 2003, 2004, 2005, 2006 CERN.
##
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## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
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##
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## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with CDSware; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
""" Library for quoting text, email style """

def email_quoted_txt2html(text,
                          tabs_before=0,
                          indent_txt='>>',
                          linebreak_txt="\n",
                          indent_html=('<div class="commentbox">', "</div>"),
                          linebreak_html='<br/>'):
    """
    Takes a typical mail quoted text, e.g.:
        hello,
        you told me:
        >> Your mother was a hamster and your father smelt of elderberries
        I must tell you that I'm not convinced. Then in this discussion:
        >>>> Is there someone else up there we could talk to?
        >> No. Now, go away, or I shall taunt you a second time-a!
        I think we're not going to be friends!
    and return an html formatted output, e.g.:
        hello,<br/>
        you told me:<br/>
        <div>
          Your mother was a hamster and your father smelt of elderberries
        </div>
        I must tell you that I'm not convinced. Then in this discussion:
        <div>
          <div>
            Is there someone else up there we could talk to?
          </div>
          No. Now, go away, or I shall taunt you a second time-a!
        </div>
        I think we're not going to be friends!
        
    @param text: the text in quoted format
    @param tabs_before: number of tabulations before each line
    @param indent_str: quote separator in email (default:'>>')
    @param linebreak_str: line separator in email (default: '\n')
    @param indent_html: tuple of (opening, closing) html tags.
                        default: ('<div class="commentbox">', "</div>")
    @param linebreak_html: line separator in html (default: '<br/>')
    @return string containing html formatted output
    """
    final_body = ""
    nb_indent = 0
    lines = text.split(linebreak_txt)
    for line in lines:
        new_nb_indent = line.count(indent_txt)
        if (new_nb_indent > nb_indent):
            for _ in range(nb_indent, new_nb_indent):
                final_body += tabs_before*"\t" + indent_html[0] + "\n"
                tabs_before += 1
        elif (new_nb_indent < nb_indent):
            for _ in range(new_nb_indent, nb_indent):
                tabs_before -= 1 
                final_body += (tabs_before)*"\t" + indent_html[1] + "\n"
        final_body += tabs_before*"\t" + line.replace(indent_txt, '')
        final_body += linebreak_html + "\n"
        nb_indent = new_nb_indent
    for _ in range(0, nb_indent):
        tabs_before -= 1
        final_body += (tabs_before)*"\t" + "</div>\n"
    return final_body


def email_quote_txt(text,
                    indent_txt='>>',
                    linebreak_input="\n",
                    linebreak_output="\n"):
    """
    Takes a text and returns it in a typical mail quoted format, e.g.:
        C'est un lapin, lapin de bois.
        >>Quoi?
        Un cadeau.
        >>What?
        A present.
        >>Oh, un cadeau.
    will return:
        >>C'est un lapin, lapin de bois.
        >>>>Quoi?
        >>Un cadeau.
        >>>>What?
        >>A present.
        >>>>Oh, un cadeau.   
    @param text: the string to quote
    @param indent_txt: the string used for quoting (default: '>>')
    @param linebreak_input: in the text param, string used for linebreaks
                            default: '\n'
    @param linebreak_output: linebreak used for output
                             default: '\n'
    @return the text as a quoted string
    """
    if (text == ""):
        return ""
    lines = text.split(linebreak_input)
    text = ""
    for line in lines:
        text += indent_txt + line + linebreak_output
    return text