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src/njs_array_buffer.h
48 строк
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Dmitry Volyntsev
Shell: added $262 as external in CLI.
10 май 2023, 04:58
10 май 2023, 04:58
ee4815f
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/* * Copyright (C) Igor Sysoev * Copyright (C) NGINX, Inc. */ #ifndef _NJS_ARRAY_BUFFER_H_INCLUDED_ #define _NJS_ARRAY_BUFFER_H_INCLUDED_ #define njs_array_buffer_size(buffer) \ ((buffer)->size) njs_array_buffer_t *njs_array_buffer_alloc(njs_vm_t *vm, uint64_t size, njs_bool_t zeroing); njs_int_t njs_array_buffer_writable(njs_vm_t *vm, njs_array_buffer_t *buffer); NJS_EXPORT njs_int_t njs_array_buffer_detach(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t unused, njs_value_t *retval); njs_inline njs_array_buffer_t * njs_array_buffer_slice(njs_vm_t *vm, njs_array_buffer_t *this, int64_t start, int64_t end) { int64_t len, new_len, first, final; njs_array_buffer_t *new_buffer; len = njs_array_buffer_size(this); first = (start < 0) ? njs_max(len + start, 0) : njs_min(start, len); final = (end < 0) ? njs_max(len + end, 0) : njs_min(end, len); new_len = njs_max(final - first, 0); new_buffer = njs_array_buffer_alloc(vm, new_len, 1); if (new_buffer == NULL) { return NULL; } memcpy(new_buffer->u.u8, &this->u.u8[first], new_len); return new_buffer; } extern const njs_object_type_init_t njs_array_buffer_type_init; #endif /* _NJS_ARRAY_BUFFER_H_INCLUDED_ */