From: Chengcheng Zhang <943420582@qq.com>
Date: Thu, 28 Feb 2019 07:46:20 +0000 (+0800)
Subject: add get_uvarint
X-Git-Url: http://git.osdn.net/view?p=bytom%2Fbytom-kit.git;a=commitdiff_plain;h=7930d0923d8c588404abd41b809b32999655fad8

add get_uvarint
---

diff --git a/app/model/transaction.py b/app/model/transaction.py
index 2c1bd6b..a970c26 100644
--- a/app/model/transaction.py
+++ b/app/model/transaction.py
@@ -42,49 +42,63 @@ def decode_raw_transaction(raw_transaction_str):
     }
 
 
-def decode_raw_tx(raw_tx_str):
-    tx_input = {
-        "address": "",
-        "amount": 0,
-        "asset_definition": {},
-        "asset_id": "",
-        "control_program": "",
-        "input_id": "",
-        "spend_output_id": "",
-        "type": "",
-        "witness_arguments": []
-    }
-    tx_output = {
-        "address": "",
-        "amount": 0,
-        "asset_definition": {},
-        "asset_id": "",
-        "control_program": "",
-        "id": "",
-        "position": 0,
-        "type": ""
-    }
-    tx = {
-        "fee": 0,
-        "inputs": [],
-        "outputs": [],
-        "size": 0,
-        "time_range": 0,
-        "tx_id": "",
-        "version": 0
-    }
-    version = int(raw_tx_str[2:4], 16)
-    time_range = int(raw_tx_str[4:6], 16)
-    tx_input_amount = int(raw_tx_str[6:8], 16)
-    tx_input_version = int(raw_tx_str[8:10], 16)
-    tx_input_length = int(raw_tx_str[10:12], 16)
-    tx_input_type = int(raw_tx_str[12:14], 16)
-    tx_input_data_spend_commit_length = int(raw_tx_str[14:16], 16)
-    tx_input_source_id = raw_tx_str[16:80]
-    tx_input_asset_id = raw_tx_str[80:144]
+def get_uvarint(uvarint_str):
+    uvarint_bytes = bytes.fromhex(uvarint_str)
+    x, s, i = 0, 0, 0
+    while True:
+        b = uvarint_bytes[i]
+        if b < 0x80:
+            if i > 9 or i == 9 and b > 1:
+                return "overflow"
+            return x | int(b) << s, i + 1
+        x |= int(b & 0x7f) << s
+        s += 7
+        i += 1
+
+
+# def decode_raw_tx(raw_tx_str):
+#     tx_input = {
+#         "address": "",
+#         "amount": 0,
+#         "asset_definition": {},
+#         "asset_id": "",
+#         "control_program": "",
+#         "input_id": "",
+#         "spend_output_id": "",
+#         "type": "",
+#         "witness_arguments": []
+#     }
+#     tx_output = {
+#         "address": "",
+#         "amount": 0,
+#         "asset_definition": {},
+#         "asset_id": "",
+#         "control_program": "",
+#         "id": "",
+#         "position": 0,
+#         "type": ""
+#     }
+#     tx = {
+#         "fee": 0,
+#         "inputs": [],
+#         "outputs": [],
+#         "size": 0,
+#         "time_range": 0,
+#         "tx_id": "",
+#         "version": 0
+#     }
+#     version = int(raw_tx_str[2:4], 16)
+#     time_range = int(raw_tx_str[4:6], 16)
+#     tx_input_amount = int(raw_tx_str[6:8], 16)
+#     tx_input_version = int(raw_tx_str[8:10], 16)
+#     tx_input_length = int(raw_tx_str[10:12], 16)
+#     tx_input_type = int(raw_tx_str[12:14], 16)
+#     tx_input_data_spend_commit_length = int(raw_tx_str[14:16], 16)
+#     tx_input_source_id = raw_tx_str[16:80]
+#     tx_input_asset_id = raw_tx_str[80:144]
     
 
-    # for i in range(tx_input_amount):
+#     # for i in range(tx_input_amount):
 
-    return tx
+#     return tx