mirror of
https://github.com/explosion/spaCy.git
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89 lines
3.1 KiB
Cython
89 lines
3.1 KiB
Cython
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from libc.stdio cimport fopen, fclose, fread, fwrite, FILE
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from libc.string cimport memcpy
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cdef class CFile:
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def __init__(self, loc, mode, on_open_error=None):
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if isinstance(mode, unicode):
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mode_str = mode.encode('ascii')
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else:
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mode_str = mode
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if hasattr(loc, 'as_posix'):
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loc = loc.as_posix()
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self.mem = Pool()
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cdef bytes bytes_loc = loc.encode('utf8') if type(loc) == unicode else loc
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self.fp = fopen(<char*>bytes_loc, mode_str)
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if self.fp == NULL:
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if on_open_error is not None:
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on_open_error()
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else:
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raise IOError("Could not open binary file %s" % bytes_loc)
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self.is_open = True
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def __dealloc__(self):
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if self.is_open:
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fclose(self.fp)
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def close(self):
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fclose(self.fp)
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self.is_open = False
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cdef int read_into(self, void* dest, size_t number, size_t elem_size) except -1:
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st = fread(dest, elem_size, number, self.fp)
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if st != number:
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raise IOError
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cdef int write_from(self, void* src, size_t number, size_t elem_size) except -1:
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st = fwrite(src, elem_size, number, self.fp)
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if st != number:
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raise IOError
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cdef void* alloc_read(self, Pool mem, size_t number, size_t elem_size) except *:
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cdef void* dest = mem.alloc(number, elem_size)
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self.read_into(dest, number, elem_size)
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return dest
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def write_unicode(self, unicode value):
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cdef bytes py_bytes = value.encode('utf8')
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cdef char* chars = <char*>py_bytes
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self.write(sizeof(char), len(py_bytes), chars)
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cdef class StringCFile:
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def __init__(self, mode, bytes data=b'', on_open_error=None):
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self.mem = Pool()
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self.is_open = 'w' in mode
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self._capacity = max(len(data), 8)
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self.size = len(data)
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self.data = <unsigned char*>self.mem.alloc(1, self._capacity)
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for i in range(len(data)):
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self.data[i] = data[i]
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def close(self):
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self.is_open = False
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def string_data(self):
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return (self.data-self.size)[:self.size]
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cdef int read_into(self, void* dest, size_t number, size_t elem_size) except -1:
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memcpy(dest, self.data, elem_size * number)
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self.data += elem_size * number
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cdef int write_from(self, void* src, size_t elem_size, size_t number) except -1:
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write_size = number * elem_size
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if (self.size + write_size) >= self._capacity:
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self._capacity = (self.size + write_size) * 2
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self.data = <unsigned char*>self.mem.realloc(self.data, self._capacity)
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memcpy(&self.data[self.size], src, elem_size * number)
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self.size += write_size
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cdef void* alloc_read(self, Pool mem, size_t number, size_t elem_size) except *:
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cdef void* dest = mem.alloc(number, elem_size)
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self.read_into(dest, number, elem_size)
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return dest
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def write_unicode(self, unicode value):
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cdef bytes py_bytes = value.encode('utf8')
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cdef char* chars = <char*>py_bytes
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self.write(sizeof(char), len(py_bytes), chars)
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