87 lines
2.5 KiB
Python
87 lines
2.5 KiB
Python
"""
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*******************************************************************************
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* Ledger Blue
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* (c) 2016 Ledger
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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********************************************************************************
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"""
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class IntelHexArea:
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def __init__(self, start, data):
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self.start = start
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self.data = data
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def getStart(self):
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return self.start
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def getData(self):
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return self.data
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class IntelHexParser:
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def __init__(self, fileName):
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self.areas = []
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lineNumber = 0
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startZone = None
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startFirst = None
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current = None
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zoneData = ""
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file = open(fileName, "r")
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for data in file:
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lineNumber += 1
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data = data.rstrip('\r\n')
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if len(data) == 0:
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continue
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if data[0] <> ':':
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raise Exception("Invalid data at line " + str(lineNumber))
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data = bytearray(data[1:].decode('hex'))
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count = data[0]
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address = (data[1] << 8) + data[2]
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recordType = data[3]
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if recordType == 0x00:
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if startZone == None:
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raise Exception("Data record but no zone defined at line " + lineNumber)
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if startFirst == None:
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startFirst = address
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current = startFirst
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if address <> current:
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self.areas.append(IntelHexArea((startZone << 16) + startFirst, zoneData))
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zoneData = ""
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startFirst = address
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current = address
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zoneData += data[4:4 + count]
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current += count
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if recordType == 0x01:
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if len(zoneData) <> 0:
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self.areas.append(IntelHexArea((startZone << 16) + startFirst, zoneData))
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zoneData = ""
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startZone = None
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startFirst = None
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current = None
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if recordType == 0x02:
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raise Exception("Unsupported record 02")
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if recordType == 0x03:
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raise Exception("Unsupported record 03")
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if recordType == 0x04:
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if len(zoneData) <> 0:
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self.areas.append(IntelHexArea((startZone << 16) + startFirst, zoneData))
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zoneData = ""
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startZone = None
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startFirst = None
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current = None
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startZone = (data[4] << 8) + data[5]
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file.close()
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def getAreas(self):
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return self.areas
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