Add basic Blob class

.gitignore

@@ -13,6 +13,7 @@ MANIFEST
 build
 dist
 _skbuild/
+venv/
 
 # Unit test / coverage files
 .tox/*

setup.py

@@ -24,6 +24,9 @@
 libraries = []
 if platform.system() != 'Windows':
     extra_compile_args.append('-std=c++11')
+    define_macros.append(('HAVE_MMAP', '1'))
+    define_macros.append(('HAVE_UNISTD_H', '1'))
+    define_macros.append(('HAVE_SYS_MMAN_H', '1'))
 else:
     define_macros.append(('HAVE_DIRECTWRITE', '1'))
     #define_macros.append(('HAVE_UNISCRIBE', '1'))

src/uharfbuzz/_harfbuzz.pyx

@@ -5,6 +5,7 @@ from libc.stdlib cimport free, malloc
 from libc.string cimport const_char
 from collections import namedtuple
 from typing import Callable, Dict, List, Sequence, Tuple, Union
+from pathlib import Path
 
 
 cdef extern from "Python.h":
@@ -276,6 +277,31 @@ cdef class Buffer:
         hb_buffer_set_message_func(self._hb_buffer, msgcallback, <void*>callback, NULL)
 
 
+cdef class Blob:
+    cdef hb_blob_t* _hb_blob
+    cdef object _data
+
+    def __cinit__(self, bytes data):
+        if data is not None:
+            self._data = data
+            self._hb_blob = hb_blob_create(
+                data, len(data), HB_MEMORY_MODE_READONLY, NULL, NULL)
+        else:
+            self._hb_blob = NULL
+
+    @classmethod
+    def from_file_path(cls, filename: Union[str, Path]):
+        cdef bytes packed = str(filename).encode()
+        cdef Blob inst = cls(None)
+        inst._hb_blob = hb_blob_create_from_file(<char*>packed)
+        return inst
+
+    def __dealloc__(self):
+        if self._hb_blob is not NULL:
+            hb_blob_destroy(self._hb_blob)
+        self._data = None
+
+
 cdef hb_user_data_key_t k
 
 

src/uharfbuzz/charfbuzz.pxd

@@ -73,8 +73,17 @@ cdef extern from "hb.h":
         hb_memory_mode_t mode,
         void* user_data, hb_destroy_func_t destroy)
 
+    hb_blob_t* hb_blob_create_from_file(
+        const char *file_name)
+
     void hb_blob_destroy(hb_blob_t* blob)
 
+    const char* hb_blob_get_data(
+        hb_blob_t *blob, unsigned int *length)
+
+    unsigned int hb_blob_get_length(
+        hb_blob_t *blob)
+
     # hb-buffer.h
     ctypedef struct hb_buffer_t:
         pass