import zipfile, cStringIO

def merge_ooo_doc(doc, fields, data):
    docf = cStringIO.StringIO(doc)
    zf = zipfile.ZipFile(docf)
    txt = zf.read('content.xml')

    for (field, k) in fields:
        parts = txt.split(field)
        newparts = [parts.pop(0)]
        i = 0
        while parts and i < len(data):
            newparts.append(str(data[i][k]))
            newparts.append(parts.pop(0))
            i = i + 1
        newparts.extend(parts)
        txt = ''.join(newparts)

    out = cStringIO.StringIO()
    zf2 = zipfile.ZipFile(out, 'w')
    for zi in zf.infolist():
        if zi.filename == 'content.xml':
            zf2.writestr(zi, txt)
        else:
            zf2.writestr(zi, zf.read(zi.filename))
    zf2.close()
    zf.close()
    return out.getvalue()