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autoconf-stuff wants the python-dir when building tools/file, so 

it's just easier to import this small amount of extra payload than
to attempt a war on autotools.
This commit is contained in:
pooka 2005-02-21 15:16:06 +00:00
parent ca40af413b
commit 373a872a16
7 changed files with 676 additions and 0 deletions
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EXTRA_DIST = README example.py py_magic.c py_magic.h setup.py

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# Makefile.in generated by automake 1.6.3 from Makefile.am.
# @configure_input@
# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
# Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
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This directory contains Python bindings to allow you to access the
libmagic api. At the moment their status is "experimental" and
they are not built by default. You may need to edit include and library
search paths in setup.py so that python's distutils build process can
find the magic header and lib files.
In order to be able to compile magic-python you need to have python
and the python-dev packages installed.
Python libraries are always built for a particular version of Python
(2.2, 2.3, etc), and libraries built for one version will not be seen
by another.
To build:
$ python setup.py build
Now, you can install the modules:
$ cp build/lib.*/magic.so /usr/lib/python2.3/lib-dynload/
(the directory /usr/lib/python2.3 may vary, depending on your installation)
magic-python should work now!

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import magic
ms = magic.open(magic.MAGIC_NONE)
ms.load()
type = ms.file("/path/to/some/file")
print type
f = file("/path/to/some/file", "r")
buffer = f.read(4096)
f.close()
type = ms.buffer(buffer)
print type
ms.close()

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/* $NetBSD: py_magic.c,v 1.1.1.1 2005/02/21 15:16:06 pooka Exp $ */
/*
Python wrappers for magic functions.
Copyright (C) Brett Funderburg, Deepfile Corp. Austin, TX, US 2003
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice immediately at the beginning of the file, without modification,
this list of conditions, and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
#include <Python.h>
#include <magic.h>
#include "py_magic.h"
/* Exceptions raised by this module */
PyObject* magic_error_obj;
/* Create a new magic_cookie_hnd object */
PyObject* new_magic_cookie_handle(magic_t cookie)
{
magic_cookie_hnd* mch;
mch = PyObject_New(magic_cookie_hnd, &magic_cookie_type);
mch->cookie = cookie;
return (PyObject*)mch;
}
static char _magic_open__doc__[] =
"Returns a magic cookie on success and None on failure.\n";
static PyObject* py_magic_open(PyObject* self, PyObject* args)
{
int flags = 0;
magic_t cookie;
if(!PyArg_ParseTuple(args, "i", &flags))
return NULL;
if(!(cookie = magic_open(flags))) {
PyErr_SetString(magic_error_obj, "failure initializing magic cookie");
return NULL;
}
return new_magic_cookie_handle(cookie);
}
static char _magic_close__doc__[] =
"Closes the magic database and deallocates any resources used.\n";
static PyObject* py_magic_close(PyObject* self, PyObject* args)
{
magic_cookie_hnd* hnd = (magic_cookie_hnd*)self;
magic_close(hnd->cookie);
Py_INCREF(Py_None);
return Py_None;
}
static char _magic_error__doc__[] =
"Returns a textual explanation of the last error or None \
if there was no error.\n";
static PyObject* py_magic_error(PyObject* self, PyObject* args)
{
magic_cookie_hnd* hnd = (magic_cookie_hnd*)self;
const char* message = NULL;
PyObject* result = Py_None;
message = magic_error(hnd->cookie);
if(message != NULL)
result = PyString_FromString(message);
else
Py_INCREF(Py_None);
return result;
}
static char _magic_errno__doc__[] =
"Returns a numeric error code. If return value is 0, an internal \
magic error occurred. If return value is non-zero, the value is \
an OS error code. Use the errno module or os.strerror() can be used \
to provide detailed error information.\n";
static PyObject* py_magic_errno(PyObject* self, PyObject* args)
{
magic_cookie_hnd* hnd = (magic_cookie_hnd*)self;
return PyInt_FromLong(magic_errno(hnd->cookie));
}
static char _magic_file__doc__[] =
"Returns a textual description of the contents of the argument passed \
as a filename or None if an error occurred and the MAGIC_ERROR flag \
is set. A call to errno() will return the numeric error code.\n";
static PyObject* py_magic_file(PyObject* self, PyObject* args)
{
magic_cookie_hnd* hnd = (magic_cookie_hnd*)self;
char* filename = NULL;
const char* message = NULL;
PyObject* result = Py_None;
if(!(PyArg_ParseTuple(args, "s", &filename)))
return NULL;
message = magic_file(hnd->cookie, filename);
if(message != NULL)
result = PyString_FromString(message);
else
Py_INCREF(Py_None);
return result;
}
static char _magic_buffer__doc__[] =
"Returns a textual description of the contents of the argument passed \
as a buffer or None if an error occurred and the MAGIC_ERROR flag \
is set. A call to errno() will return the numeric error code.\n";
static PyObject* py_magic_buffer(PyObject* self, PyObject* args)
{
magic_cookie_hnd* hnd = (magic_cookie_hnd*)self;
void* buffer = NULL;
int buffer_length = 0;
const char* message = NULL;
PyObject* result = Py_None;
if(!(PyArg_ParseTuple(args, "s#", (char**)&buffer, &buffer_length)))
return NULL;
message = magic_buffer(hnd->cookie, buffer, buffer_length);
if(message != NULL)
result = PyString_FromString(message);
else
Py_INCREF(Py_None);
return result;
}
static char _magic_setflags__doc__[] =
"Set flags on the cookie object.\n \
Returns -1 on systems that don't support utime(2) or utimes(2) \
when MAGIC_PRESERVE_ATIME is set.\n";
static PyObject* py_magic_setflags(PyObject* self, PyObject* args)
{
magic_cookie_hnd* hnd = (magic_cookie_hnd*)self;
int flags;
int result;
if(!(PyArg_ParseTuple(args, "i", &flags)))
return NULL;
result = magic_setflags(hnd->cookie, flags);
return PyInt_FromLong(result);
}
static char _magic_check__doc__[] =
"Check the validity of entries in the colon separated list of \
database files passed as argument or the default database file \
if no argument.\n Returns 0 on success and -1 on failure.\n";
static PyObject* py_magic_check(PyObject* self, PyObject* args)
{
magic_cookie_hnd* hnd = (magic_cookie_hnd*)self;
char* filename = NULL;
int result;
if(!(PyArg_ParseTuple(args, "|s", &filename)))
return NULL;
result = magic_check(hnd->cookie, filename);
return PyInt_FromLong(result);
}
static char _magic_compile__doc__[] =
"Compile entries in the colon separated list of database files \
passed as argument or the default database file if no argument.\n \
Returns 0 on success and -1 on failure.\n \
The compiled files created are named from the basename(1) of each file \
argument with \".mgc\" appended to it.\n";
static PyObject* py_magic_compile(PyObject* self, PyObject* args)
{
magic_cookie_hnd* hnd = (magic_cookie_hnd*)self;
char* filename = NULL;
int result;
if(!(PyArg_ParseTuple(args, "|s", &filename)))
return NULL;
result = magic_compile(hnd->cookie, filename);
return PyInt_FromLong(result);
}
static char _magic_load__doc__[] =
"Must be called to load entries in the colon separated list of database files \
passed as argument or the default database file if no argument before \
any magic queries can be performed.\n \
Returns 0 on success and -1 on failure.\n";
static PyObject* py_magic_load(PyObject* self, PyObject* args)
{
magic_cookie_hnd* hnd = (magic_cookie_hnd*)self;
char* filename = NULL;
int result;
if(!(PyArg_ParseTuple(args, "|s", &filename)))
return NULL;
result = magic_load(hnd->cookie, filename);
return PyInt_FromLong(result);
}
/* object methods */
static PyMethodDef magic_cookie_hnd_methods[] = {
{ "close", (PyCFunction)py_magic_close,
METH_NOARGS, _magic_close__doc__ },
{ "error", (PyCFunction)py_magic_error,
METH_NOARGS, _magic_error__doc__ },
{ "file", (PyCFunction)py_magic_file,
METH_VARARGS, _magic_file__doc__ },
{ "buffer", (PyCFunction)py_magic_buffer,
METH_VARARGS, _magic_buffer__doc__ },
{ "setflags", (PyCFunction)py_magic_setflags,
METH_VARARGS, _magic_setflags__doc__ },
{ "check", (PyCFunction)py_magic_check,
METH_VARARGS, _magic_check__doc__ },
{ "compile", (PyCFunction)py_magic_compile,
METH_VARARGS, _magic_compile__doc__ },
{ "load", (PyCFunction)py_magic_load,
METH_VARARGS, _magic_load__doc__ },
{ "errno", (PyCFunction)py_magic_errno,
METH_NOARGS, _magic_errno__doc__ },
{ NULL, NULL }
};
/* module level methods */
static PyMethodDef magic_methods[] = {
{ "open", (PyCFunction)py_magic_open,
METH_VARARGS, _magic_open__doc__ },
{ NULL, NULL }
};
static void py_magic_dealloc(PyObject* self)
{
PyObject_Del(self);
}
static PyObject* py_magic_getattr(PyObject* self, char* attrname)
{
return Py_FindMethod(magic_cookie_hnd_methods, self, attrname);
}
PyTypeObject magic_cookie_type = {
PyObject_HEAD_INIT(NULL)
0,
"Magic cookie",
sizeof(magic_cookie_hnd),
0,
py_magic_dealloc, /* tp_dealloc */
0, /* tp_print */
py_magic_getattr, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
};
/* Initialize constants */
static struct const_vals {
const char* const name;
unsigned int value;
} module_const_vals[] = {
{ "MAGIC_NONE", MAGIC_NONE },
{ "MAGIC_DEBUG", MAGIC_DEBUG },
{ "MAGIC_SYMLINK", MAGIC_SYMLINK },
{ "MAGIC_COMPRESS", MAGIC_COMPRESS },
{ "MAGIC_DEVICES", MAGIC_DEVICES },
{ "MAGIC_MIME", MAGIC_MIME },
{ "MAGIC_CONTINUE", MAGIC_CONTINUE },
{ "MAGIC_CHECK", MAGIC_CHECK },
{ "MAGIC_PRESERVE_ATIME", MAGIC_PRESERVE_ATIME },
{ "MAGIC_ERROR", MAGIC_ERROR},
{ NULL }
};
static void const_init(PyObject* dict)
{
struct const_vals* tmp;
PyObject *obj;
for(tmp = module_const_vals; tmp->name; ++tmp) {
obj = PyInt_FromLong(tmp->value);
PyDict_SetItemString(dict, tmp->name, obj);
Py_DECREF(obj);
}
}
/*
* Module initialization
*/
void initmagic(void)
{
PyObject* module;
PyObject* dict;
/* Initialize module */
module = Py_InitModule("magic", magic_methods);
dict = PyModule_GetDict(module);
magic_error_obj = PyErr_NewException("magic.error", NULL, NULL);
PyDict_SetItemString(dict, "error", magic_error_obj);
magic_cookie_type.ob_type = &PyType_Type;
/* Initialize constants */
const_init(dict);
if(PyErr_Occurred())
Py_FatalError("can't initialize module magic");
}

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/* $NetBSD: py_magic.h,v 1.1.1.1 2005/02/21 15:16:06 pooka Exp $ */
/*
Python wrappers for magic functions.
Copyright (C) Brett Funderburg, Deepfile Corp. Austin, TX, US 2003
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice immediately at the beginning of the file, without modification,
this list of conditions, and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
#ifndef _PY_MAGIC_H
#define _PY_MAGIC_H
typedef struct {
PyObject_HEAD
magic_t cookie;
} magic_cookie_hnd;
extern PyTypeObject magic_cookie_type;
#endif /* _PY_MAGIC_H */

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# Python distutils build script for magic extension
from distutils.core import setup, Extension
magic_module = Extension('magic',
libraries = ['magic'],
library_dirs = ['./','../','../src','/usr/lib/'],
include_dirs = ['./','../','../src','/usr/include/'],
sources = ['py_magic.c'])
setup (name = 'Magic file extensions',
version = '0.1',
author = 'Brett Funderburg',
author_email = 'brettf@deepfile.com',
license = 'BSD',
description = 'libmagic python bindings',
ext_modules = [magic_module])