python/src/str.cpp

// Copyright David Abrahams 2004. Distributed under the Boost
// Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#include <boost/python/str.hpp>
#include <boost/python/extract.hpp>
#include <boost/python/ssize_t.hpp>

namespace boost { namespace python { namespace detail {

detail::new_reference str_base::call(object const& arg_)
{
    return (detail::new_reference)PyObject_CallFunction(
#if PY_VERSION_HEX >= 0x03000000
        (PyObject*)&PyUnicode_Type,
#else
        (PyObject*)&PyString_Type,
#endif
        const_cast<char*>("(O)"),
        arg_.ptr());
}

str_base::str_base()
  : object(detail::new_reference(
#if PY_VERSION_HEX >= 0x03000000
              ::PyUnicode_FromString("")
#else
              ::PyString_FromString("")
#endif
            ))
{}

str_base::str_base(const char* s)
  : object(detail::new_reference(
#if PY_VERSION_HEX >= 0x03000000
              ::PyUnicode_FromString(s)
#else
              ::PyString_FromString(s)
#endif
            ))
{}

namespace {

    ssize_t str_size_as_py_ssize_t(std::size_t n)
    {
      if (n > static_cast<std::size_t>(ssize_t_max))
      {
          throw std::range_error("str size > ssize_t_max");
      }
      return static_cast<ssize_t>(n);
    }

} // namespace <anonymous>

str_base::str_base(char const* start, char const* finish)
    : object(
        detail::new_reference(
#if PY_VERSION_HEX >= 0x03000000
            ::PyUnicode_FromStringAndSize
#else
            ::PyString_FromStringAndSize
#endif
                (start, str_size_as_py_ssize_t(finish - start))
        )
    )
{}

str_base::str_base(char const* start, std::size_t length) // new str
    : object(
        detail::new_reference(
#if PY_VERSION_HEX >= 0x03000000
            ::PyUnicode_FromStringAndSize
#else
            ::PyString_FromStringAndSize
#endif
            ( start, str_size_as_py_ssize_t(length) )
        )
    )
{}

str_base::str_base(object_cref other)
    : object(str_base::call(other))
{}

#define BOOST_PYTHON_FORMAT_OBJECT(z, n, data) "O"
#define BOOST_PYTHON_OBJECT_PTR(z, n, data) , x##n .ptr()

#define BOOST_PYTHON_DEFINE_STR_METHOD(name, arity)                             \
str str_base:: name ( BOOST_PP_ENUM_PARAMS(arity, object_cref x) ) const        \
{                                                                               \
    return str(new_reference(                                                   \
       expect_non_null(                                                         \
           PyObject_CallMethod(                                                 \
               this->ptr(), const_cast<char*>( #name ),                         \
               const_cast<char*>(                                               \
                 "(" BOOST_PP_REPEAT(arity, BOOST_PYTHON_FORMAT_OBJECT, _) ")") \
               BOOST_PP_REPEAT_1(arity, BOOST_PYTHON_OBJECT_PTR, _)))));        \
}

BOOST_PYTHON_DEFINE_STR_METHOD(capitalize, 0)
BOOST_PYTHON_DEFINE_STR_METHOD(center, 1)

long str_base::count(object_cref sub) const
{
    return extract<long>(this->attr("count")(sub));
}

long str_base::count(object_cref sub, object_cref start) const
{
    return extract<long>(this->attr("count")(sub,start));
}

long str_base::count(object_cref sub, object_cref start, object_cref end) const
{
    return extract<long>(this->attr("count")(sub,start,end));
}

#if PY_VERSION_HEX < 0x03000000
object str_base::decode() const
{
    return this->attr("decode")();
}

object str_base::decode(object_cref encoding) const
{
    return this->attr("decode")(encoding);
}

object str_base::decode(object_cref encoding, object_cref errors) const
{
    return this->attr("decode")(encoding,errors);
}
#endif

object str_base::encode() const
{
    return this->attr("encode")();
}

object str_base::encode(object_cref encoding) const
{
    return this->attr("encode")(encoding);
}

object str_base::encode(object_cref encoding, object_cref errors) const
{
    return this->attr("encode")(encoding,errors);
}


#if PY_VERSION_HEX >= 0x03000000
    #define _BOOST_PYTHON_ASLONG PyLong_AsLong
#else
    #define _BOOST_PYTHON_ASLONG PyInt_AsLong
#endif

bool str_base::endswith(object_cref suffix) const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("endswith")(suffix).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::endswith(object_cref suffix, object_cref start) const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("endswith")(suffix,start).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::endswith(object_cref suffix, object_cref start, object_cref end) const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("endswith")(suffix,start,end).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

BOOST_PYTHON_DEFINE_STR_METHOD(expandtabs, 0)
BOOST_PYTHON_DEFINE_STR_METHOD(expandtabs, 1)

long str_base::find(object_cref sub) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("find")(sub).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

long str_base::find(object_cref sub, object_cref start) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("find")(sub,start).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

long str_base::find(object_cref sub, object_cref start, object_cref end) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("find")(sub,start,end).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

long str_base::index(object_cref sub) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("index")(sub).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

long str_base::index(object_cref sub, object_cref start) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("index")(sub,start).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

long str_base::index(object_cref sub, object_cref start, object_cref end) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("index")(sub,start,end).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::isalnum() const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("isalnum")().ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::isalpha() const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("isalpha")().ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::isdigit() const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("isdigit")().ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::islower() const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("islower")().ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::isspace() const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("isspace")().ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::istitle() const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("istitle")().ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::isupper() const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("isupper")().ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

BOOST_PYTHON_DEFINE_STR_METHOD(join, 1)
BOOST_PYTHON_DEFINE_STR_METHOD(ljust, 1)
BOOST_PYTHON_DEFINE_STR_METHOD(lower, 0)
BOOST_PYTHON_DEFINE_STR_METHOD(lstrip, 0)
BOOST_PYTHON_DEFINE_STR_METHOD(replace, 2)
BOOST_PYTHON_DEFINE_STR_METHOD(replace, 3)

long str_base::rfind(object_cref sub) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("rfind")(sub).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

long str_base::rfind(object_cref sub, object_cref start) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("rfind")(sub,start).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

long str_base::rfind(object_cref sub, object_cref start, object_cref end) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("rfind")(sub,start,end).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

long str_base::rindex(object_cref sub) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("rindex")(sub).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

long str_base::rindex(object_cref sub, object_cref start) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("rindex")(sub,start).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

long str_base::rindex(object_cref sub, object_cref start, object_cref end) const
{
    long result = _BOOST_PYTHON_ASLONG(this->attr("rindex")(sub,start,end).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

BOOST_PYTHON_DEFINE_STR_METHOD(rjust, 1)
BOOST_PYTHON_DEFINE_STR_METHOD(rstrip, 0)

list str_base::split() const
{
    return list(this->attr("split")());
}

list str_base::split(object_cref sep) const
{
    return list(this->attr("split")(sep));
}

list str_base::split(object_cref sep, object_cref maxsplit) const
{
    return list(this->attr("split")(sep,maxsplit));
}

list str_base::splitlines() const
{
    return list(this->attr("splitlines")());
}

list str_base::splitlines(object_cref keepends) const
{
    return list(this->attr("splitlines")(keepends));
}

bool str_base::startswith(object_cref prefix) const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("startswith")(prefix).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::startswith(object_cref prefix, object_cref start) const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("startswith")(prefix,start).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

bool str_base::startswith(object_cref prefix, object_cref start, object_cref end) const
{
    bool result = _BOOST_PYTHON_ASLONG(this->attr("startswith")(prefix,start,end).ptr());
    if (PyErr_Occurred())
        throw_error_already_set();
    return result;
}

#undef _BOOST_PYTHON_ASLONG

BOOST_PYTHON_DEFINE_STR_METHOD(strip, 0)
BOOST_PYTHON_DEFINE_STR_METHOD(swapcase, 0)
BOOST_PYTHON_DEFINE_STR_METHOD(title, 0)
BOOST_PYTHON_DEFINE_STR_METHOD(translate, 1)
BOOST_PYTHON_DEFINE_STR_METHOD(translate, 2)
BOOST_PYTHON_DEFINE_STR_METHOD(upper, 0)

static struct register_str_pytype_ptr
{
    register_str_pytype_ptr()
    {
        const_cast<converter::registration &>(
            converter::registry::lookup(boost::python::type_id<boost::python::str>())
            )
#if PY_VERSION_HEX >= 0x03000000
            .m_class_object = &PyUnicode_Type;
#else
            .m_class_object = &PyString_Type;
#endif
    }
}register_str_pytype_ptr_;

}}}  // namespace boost::python