reading struct in python from created struct in c

Question

I am very new at using Python and very rusty with C, so I apologize in advance for how dumb and/or lost I sound.

I have function in C that creates a .dat file contai

Answer 1

I had same problem recently, so I had made module for the task, stored here: http://pastebin.com/XJyZMyHX

example code:

MY_STRUCT="""typedef struct __attribute__ ((__packed__)){
    uint8_t u8;
    uint16_t u16;
    uint32_t u32;
    uint64_t u64;
    int8_t i8;
    int16_t i16;
    int32_t i32;
    int64_t i64;
    long long int lli;
    float flt;
    double dbl;
    char string[12];
    uint64_t array[5];
} debugInfo;"""

PACKED_STRUCT='\x01\x00\x01\x00\x00\x01\x00\x00\x00\x00\x00\x01\x00\x00\x00\xff\x00\xff\x00\x00\xff\xff\x00\x00\x00\x00\xff\xff\xff\xff*\x00\x00\x00\x00\x00\x00\x00ff\x06@\x14\xaeG\xe1z\x14\x08@testString\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00'

if __name__ == '__main__':
    print "String:"
    print depack_bytearray_to_str(PACKED_STRUCT,MY_STRUCT,"<" )
    print "Bytes in Stuct:"+str(structSize(MY_STRUCT))
    nt=depack_bytearray_to_namedtuple(PACKED_STRUCT,MY_STRUCT,"<" )
    print "Named tuple nt:"
    print nt
    print "nt.string="+nt.string

The result should be:

String:
u8:1
u16:256
u32:65536
u64:4294967296
i8:-1
i16:-256
i32:-65536
i64:-4294967296
lli:42
flt:2.09999990463
dbl:3.01
string:u'testString\x00\x00'
array:(1, 2, 3, 4, 5)

Bytes in Stuct:102
Named tuple nt:
CStruct(u8=1, u16=256, u32=65536, u64=4294967296L, i8=-1, i16=-256, i32=-65536, i64=-4294967296L, lli=42, flt=2.0999999046325684, dbl=3.01, string="u'testString\\x00\\x00'", array=(1, 2, 3, 4, 5))
nt.string=u'testString\x00\x00'