#!/usr/bin/env python
# -*- coding: utf-8 -*-

from translate.misc import quote

def test_find_all():
    """tests the find_all function"""
    assert quote.find_all("", "a") == []
    assert quote.find_all("a", "b") == []
    assert quote.find_all("a", "a") == [0]
    assert quote.find_all("aa", "a") == [0, 1]
    assert quote.find_all("abba", "ba") == [2]
    # check we skip the whole instance
    assert quote.find_all("banana", "ana") == [1]

def test_extract():
    """tests the extract function"""
    assert quote.extract("the <quoted> part", "<", ">", "\\", 0) == ("<quoted>", False)
    assert quote.extract("the 'quoted' part", "'", "'", "\\", 0) == ("'quoted'", False)
    assert quote.extract("the 'isn\\'t escaping fun' part", "'", "'", "\\", 0) == ("'isn\\'t escaping fun'", False)
    assert quote.extract("the 'isn\\'t something ", "'", "'", "\\", 0) == ("'isn\\'t something ", True)
    assert quote.extract("<quoted>\\", "<", ">", "\\", 0) == ("<quoted>", False)
    assert quote.extract("<quoted><again>", "<", ">", "\\", 0) == ("<quoted><again>", False)
    assert quote.extract("<quoted>\\\\<again>", "<", ">", "\\", 0) == ("<quoted><again>", False)
    assert quote.extract("<quoted\\>", "<", ">", "\\", 0) == ("<quoted\\>", True)
    assert quote.extract(' -->\n<!ENTITY blah "Some">', "<!--", "-->", None, 1) == (" -->", False)
    assert quote.extract('">\n', '"', '"', None, True) == ('"', False)

def test_extractwithoutquotes():
    """tests the extractwithoutquotes function"""
    assert quote.extractwithoutquotes("the <quoted> part", "<", ">", "\\", 0) == ("quoted", False)
    assert quote.extractwithoutquotes("the 'quoted' part", "'", "'", "\\", 0) == ("quoted", False)
    assert quote.extractwithoutquotes("the 'isn\\'t escaping fun' part", "'", "'", "\\", 0) == ("isn\\'t escaping fun", False)
    assert quote.extractwithoutquotes("the 'isn\\'t something ", "'", "'", "\\", 0) == ("isn\\'t something ", True)
    assert quote.extractwithoutquotes("<quoted>\\", "<", ">", "\\", 0) == ("quoted", False)
    assert quote.extractwithoutquotes("<quoted>\\\\<again>", "<", ">", "\\", 0) == ("quotedagain", False)
    assert quote.extractwithoutquotes("<quoted><again\\\\", "<", ">", "\\", 0, True) == ("quotedagain\\\\", True)
    # don't include escapes...
    assert quote.extractwithoutquotes("the 'isn\\'t escaping fun' part", "'", "'", "\\", 0, False) == ("isn't escaping fun", False)
    assert quote.extractwithoutquotes("the 'isn\\'t something ", "'", "'", "\\", 0, False) == ("isn't something ", True)
    assert quote.extractwithoutquotes("<quoted\\", "<", ">", "\\", 0, False) == ("quoted", True)
    assert quote.extractwithoutquotes("<quoted><again\\\\", "<", ">", "\\", 0, False) == ("quotedagain\\", True)
    # escaping of quote char
    assert quote.extractwithoutquotes("<quoted\\>", "<", ">", "\\", 0, False) == ("quoted>", True)

def isnewlineortabescape(escape):
    if escape == "\\n" or escape == "\\t":
        return escape
    return escape[-1]

def test_extractwithoutquotes_passfunc():
    """tests the extractwithoutquotes function with a function for includeescapes as a parameter"""
    assert quote.extractwithoutquotes("<test \\r \\n \\t \\\\>", "<", ">", "\\", 0, isnewlineortabescape) == ("test r \\n \\t \\", False)

class TestQuote:

    def test_mozilla_control_escapes(self):
        """test that we do \uNNNN escapes for certain control characters instead of converting to UTF-8 characters"""
        prefix, suffix = "bling", "blang"
        for control in (u"\u0005", u"\u0006", u"\u0007", u"\u0011"):
            string = prefix + control + suffix
            assert quote.escapecontrols(string) == string

    def test_quote_wrapping(self):
        """test that we can wrap strings in double quotes"""
        string = 'A string'
        assert quote.quotestr(string) == '"A string"'
        list = ['One', 'Two']
        assert quote.quotestr(list) == '"One"\n"Two"'

    def _html_encoding_helper(self, pairs):
        for from_, to in pairs:
            assert quote.htmlentityencode(from_) == to
            assert quote.htmlentitydecode(to) == from_

    def test_htmlencoding(self):
        """test that we can encode and decode simple HTML entities"""
        raw_encoded = [(u"€", "&euro;"), (u"©", "&copy;"), (u'"', "&quot;")]
        self._html_encoding_helper(raw_encoded)

    def test_htmlencoding_passthrough(self):
        """test that we can encode and decode things that look like HTML entities but aren't"""
        raw_encoded = [(u"copy quot", "copy quot"),      # Raw text should have nothing done to it.
                      ]
        self._html_encoding_helper(raw_encoded)
