My problem is the same: I have two functions, print_ip(const char* buf,
size_t buflen), and save_ip(const char* buf, size_t buflen). In the
print_ip the value is cast correctly, but in save_ip not.
void print_ip(const char* buf, size_t buflen) {
unsigned const char* bp = (unsigned const char*) buf;
if (buflen > 0) {
cout << static_cast<int> (*bp++);
for (size_t i = 1; i < buflen; ++i)
cout << "." << static_cast<int> (*bp++);
}
}
string save_ip(const char* buf, size_t buflen) {
unsigned const char* bp = (unsigned const char*) buf;
string returned("test:");
if (buflen > 0) {
returned += static_cast<int> (*bp++);
for (size_t i = 1; i < buflen; ++i) {
returned += '.';
returned += static_cast<int> (*bp++);
}
}
return returned;
}
What am I doing wrong?
2013/10/30 Rafael Ratacheski <rafaelratache...@gmail.com>
> Sorry Walter and Magnus. I didnt expose my quest properly. The input of
> function is a variable with the value of the oid "netdotmediaipadress" and
> the size of this value. This function make two things: save the input value
> in a string in the standard ip adress format. And print the input value at
> the same format. The print is ok, then my problem is save the value in a
> formatted string. Thanks
> Em 30/10/2013 06:39, "Schmoll Walter" <walter.schm...@andritz.com>
> escreveu:
>
> Hi Rafael!****
>>
>> ** **
>>
>> I’m having the same problems as Magnus: I don’t have an idea what your
>> code should do. From ****
>>
>> “the oid value in a string”****
>>
>> and****
>>
>> cout << static_cast<long> (*bp++)<<”.“;****
>>
>> I guess you are trying to format an OID from its binary form in a text
>> like 1.3.6.345.67.8. If this is so, then one of your problems is that the
>> binary form doesn’t use 8bit integers (unsigned char), the value range
>> would be too small. Net-snmp uses the type oid which is normally a a few
>> bits wider J. Use this type instead of void * or unsigned char *.****
>>
>> And by the way: Why don’t you use a function like snprint_objid, which is
>> part of net-snmp lib?****
>>
>> I haven’t read your code in detail, so maybe I’m wrong.****
>>
>> ** **
>>
>> Walter****
>>
>> ** **
>>
>> *From:* Rafael Ratacheski [mailto:rafaelratache...@gmail.com]
>> *Sent:* Dienstag, 29. Oktober 2013 19:51
>> *To:* net-snmp-coders@lists.sourceforge.net
>> *Subject:* Trouble in concatenate a value to a string****
>>
>> ** **
>>
>> Hello, I'm having problem in concatenate the oid value in a string. I've
>> tried several possible ways, but all unsuccessfully. Can you help me?
>> My code is
>>
>> string print_ip(const void* buf, size_t buflen) {
>> unsigned const char* bp = (unsigned const char*) buf;
>> string returned("test:");
>> string sp("");
>> while (buflen--) {
>> if (buflen == 0) {
>> cout << static_cast<long> (*bp++);
>> bp--;
>> sp=static_cast<int> (*bp++);
>> returned += sp;
>> } else {
>> cout << static_cast<long> (*bp++) << ".";
>> bp--;
>> sp=static_cast<int> (*bp++);
>> returned += sp;
>> returned += ".";
>> }
>> }
>> puts("");
>> cout << returned;
>> return returned;
>> }****
>> ------------------------------
>>
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>> recipients. They may contain privileged and/or confidential information or
>> other information protected from disclosure. If you are not an intended
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>> and any attachment is strictly prohibited. If you have received this email
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>> ------------------------------
>>
>
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