matrix "writer" - to produce native py matrix

[dz0]

that would allow incorporating tool in variuos contexts -- for example I have openpyxl workflow, where I'd like to use it

also could be proxy for #6

[dz0]

I made it easily from csv Writer

class NativeTableWriter(bWriter):
    EMPTY = ''

    def __init__(self, empty=EMPTY):
        self.table = []
        self.header_depth = 0
        self.EMPTY = empty
        

    def reset(self):
        self.table = []

    def write_header(self, header):
        self.write_row(header, None)
        self.header_depth += 1

    def write_row(self, row, data):
        out = []
        for h in row:
            v = h.value
            if v is None:
                v = ''
            out.append(v)
            if h.columns > 1:
                for _ in range(h.columns - 1):
                    out.append(self.EMPTY)
        self.table.append(out)

[dz0]

a test , based on

json-excel-converter/tests/test_csv_converter.py

Line 5 in add62a4

def test_csv_converter():

def test_native_table_converter():
    data = [
        {
            'a': [
                {
                    'b': '1'
                },
                {
                    'c': '2'
                }
            ],
            'd': 'abc'
        }
    ]
    data += data

    conv = Converter()
    w = TableWriter()
    conv.convert(data, w)
    assert w.header_depth == 2
    assert w.table == (
        [['a', '', 'a', '', 'd'],
         ['b', 'c', 'b', 'c', ''],
         ['1', '', '', '2', 'abc'],
         ['1', '', '', '2', 'abc']]
    )