mirror of
https://github.com/msgpack/msgpack-python.git
synced 2025-11-04 11:30:57 +00:00
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
static inline int unpack_container_header(unpack_context* ctx, const char* data, Py_ssize_t len, Py_ssize_t* off)
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{
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assert(len >= *off);
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uint32_t size;
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const unsigned char *const p = (unsigned char*)data + *off;
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#define inc_offset(inc) \
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if (len - *off < inc) \
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return 0; \
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*off += inc;
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switch (*p) {
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case var_offset:
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inc_offset(3);
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size = _msgpack_load16(uint16_t, p + 1);
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break;
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case var_offset + 1:
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inc_offset(5);
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size = _msgpack_load32(uint32_t, p + 1);
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break;
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#ifdef USE_CASE_RANGE
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case fixed_offset + 0x0 ... fixed_offset + 0xf:
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#else
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case fixed_offset + 0x0:
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case fixed_offset + 0x1:
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case fixed_offset + 0x2:
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case fixed_offset + 0x3:
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case fixed_offset + 0x4:
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case fixed_offset + 0x5:
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case fixed_offset + 0x6:
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case fixed_offset + 0x7:
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case fixed_offset + 0x8:
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case fixed_offset + 0x9:
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case fixed_offset + 0xa:
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case fixed_offset + 0xb:
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case fixed_offset + 0xc:
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case fixed_offset + 0xd:
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case fixed_offset + 0xe:
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case fixed_offset + 0xf:
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#endif
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++*off;
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size = ((unsigned int)*p) & 0x0f;
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break;
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default:
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PyErr_SetString(PyExc_ValueError, "Unexpected type header on stream");
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return -1;
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}
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unpack_callback_uint32(&ctx->user, size, &ctx->stack[0].obj);
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return 1;
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}
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