本文整理汇总了C++中Istream::read方法的典型用法代码示例。如果您正苦于以下问题：C++ Istream::read方法的具体用法？C++ Istream::read怎么用？C++ Istream::read使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Istream的用法示例。
在下文中一共展示了Istream::read方法的10个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: int
unsigned char Foam::SHA1Digest::readHexDigit(Istream& is)
{
// Takes into account that 'a' (or 'A') is 10
static const int alphaOffset = toupper('A') - 10;
// Takes into account that '0' is 0
static const int zeroOffset = int('0');
// silently ignore leading or intermediate '_'
char c = 0;
do
{
is.read(c);
}
while (c == '_');
if (!isxdigit(c))
{
FatalIOErrorIn("SHA1Digest::readHexDigit(Istream&)", is)
<< "Illegal hex digit: '" << c << "'"
<< exit(FatalIOError);
}
if (isdigit(c))
{
return int(c) - zeroOffset;
}
else
{
return toupper(c) - alphaOffset;
}
}示例2: load_data_record
static void load_data_record(Istream& fin, const gcstring& table, int tran, int n)
{
try
{
if (n > loadbuf_size)
{
loadbuf_size = max(n, 2 * loadbuf_size);
mem_release(loadbuf);
loadbuf = (char*) mem_committed(loadbuf_size);
verify(loadbuf);
}
fin.read(loadbuf, n);
Record rec(loadbuf);
if (rec.cursize() != n)
except_err(table << ": rec size " << rec.cursize() << " not what was read " << n);
if (table == "views")
theDB()->add_any_record(tran, table, rec);
else
theDB()->add_record(tran, table, rec);
}
catch (const Except& e)
{
errlog("load: skipping corrupted record in: ", table.str(), e.str());
alert("skipping corrupted record in: " << table << ": " << e);
alerts = true;
}
}示例3: ParcelType
Foam::WetParcel<ParcelType>::WetParcel
(
const polyMesh& mesh,
Istream& is,
bool readFields
)
:
ParcelType(mesh, is, readFields),
Vliq_(0.0)
{
if (readFields)
{
if (is.format() == IOstream::ASCII)
{
Vliq_ = readScalar(is);
}
else
{
is.read
(
reinterpret_cast<char*>(&Vliq_),
sizeof(Vliq_)
);
}
}
// Check state of Istream
is.check
(
"WetParcel<ParcelType>::WetParcel"
"(const polyMesh&, Istream&, bool)"
);
}示例4: if
bool Foam::entry::getKeyword(keyType& keyword, Istream& is)
{
token keywordToken;
// Read the next valid token discarding spurious ';'s
do
{
if
(
is.read(keywordToken).bad()
|| is.eof()
|| !keywordToken.good()
)
{
return false;
}
}
while (keywordToken == token::END_STATEMENT);
// If the token is a valid keyword set 'keyword' return true...
if (keywordToken.isWord())
{
keyword = keywordToken.wordToken();
return true;
}
else if (keywordToken.isString())
{
// Enable wildcards
keyword = keywordToken.stringToken();
return true;
}
// If it is the end of the dictionary or file return false...
else if (keywordToken == token::END_BLOCK || is.eof())
{
return false;
}
// Otherwise the token is invalid
else
{
cerr<< "--> FOAM Warning : " << std::endl
<< " From function "
<< "entry::getKeyword(keyType&, Istream&)" << std::endl
<< " in file " << __FILE__
<< " at line " << __LINE__ << std::endl
<< " Reading " << is.name().c_str() << std::endl
<< " found " << keywordToken << std::endl
<< " expected either " << token::END_BLOCK << " or EOF"
<< std::endl;
return false;
}
}示例5: while
void Foam::functionEntries::ifeqEntry::readToken(token& t, Istream& is)
{
// Skip dummy tokens - avoids entry::getKeyword consuming #else, #endif
do
{
if
(
is.read(t).bad()
|| is.eof()
|| !t.good()
)
{
return;
}
}
while (t == token::END_STATEMENT);
}示例6: load_data
static int load_data(Istream& fin, const gcstring& table)
{
int nrecs = 0;
int tran = theDB()->transaction(READWRITE);
for (;; ++nrecs)
{
int n;
fin.read((char*) &n, sizeof n);
if (fin.gcount() != sizeof n)
except("unexpected eof");
if (n == 0)
break ;
load_data_record(fin, table, tran, n);
if (nrecs % recsPerTran == recsPerTran - 1)
{
verify(theDB()->commit(tran));
tran = theDB()->transaction(READWRITE);
}
}
verify(theDB()->commit(tran));
return nrecs;
}示例7: readScalar
Foam::ThermoParcel<ParcelType>::ThermoParcel
(
const Cloud<ParcelType>& cloud,
Istream& is,
bool readFields
)
:
KinematicParcel<ParcelType>(cloud, is, readFields),
T_(0.0),
cp_(0.0),
Tc_(0.0),
cpc_(0.0)
{
if (readFields)
{
if (is.format() == IOstream::ASCII)
{
T_ = readScalar(is);
cp_ = readScalar(is);
}
else
{
is.read
(
reinterpret_cast<char*>(&T_),
+ sizeof(T_)
+ sizeof(cp_)
);
}
}
// Check state of Istream
is.check
(
"ThermoParcel::ThermoParcel(const Cloud<ParcelType>&, Istream&, bool)"
);
}示例8:
Foam::token::token(Istream& is)
:
type_(UNDEFINED)
{
is.read(*this);
}示例9: append
bool Foam::primitiveEntry::read(const dictionary& dict, Istream& is)
{
is.fatalCheck
(
"primitiveEntry::readData(const dictionary&, Istream&)"
);
label blockCount = 0;
token currToken;
if
(
!is.read(currToken).bad()
&& currToken.good()
&& currToken != token::END_STATEMENT
)
{
append(currToken, dict, is);
if
(
currToken == token::BEGIN_BLOCK
|| currToken == token::BEGIN_LIST
)
{
blockCount++;
}
while
(
!is.read(currToken).bad()
&& currToken.good()
&& !(currToken == token::END_STATEMENT && blockCount == 0)
)
{
if
(
currToken == token::BEGIN_BLOCK
|| currToken == token::BEGIN_LIST
)
{
blockCount++;
}
else if
(
currToken == token::END_BLOCK
|| currToken == token::END_LIST
)
{
blockCount--;
}
append(currToken, dict, is);
}
}
is.fatalCheck
(
"primitiveEntry::readData(const dictionary&, Istream&)"
);
if (currToken.good())
{
return true;
}
else
{
return false;
}
}示例10: ParcelType
Foam::WetParcel<ParcelType>::WetParcel
(
const polyMesh& mesh,
Istream& is,
bool readFields
)
:
ParcelType(mesh, is, readFields),
Vliq_(0.0),
partVliq_(),
liquidPositionVectors_(),
liquidPositions_(),
contactList_(),
previousContactList_()
{
if (readFields)
{
if (is.format() == IOstream::ASCII)
{
Vliq_ = readScalar(is);
partVliq_ = readList<scalar>(is);
liquidPositions_ = readList<vector>(is);
liquidPositionVectors_ = readList<vector>(is);
contactList_ = readList<label>(is);
previousContactList_ = readList<label>(is);
}
else
{
/*
is.read
(
reinterpret_cast<char*>(&Vliq_),
sizeof(Vliq_)
);
is.read
(
reinterpret_cast<char*>(&partVliq_),
sizeof(partVliq_)
);
is.read
(
reinterpret_cast<char*>(&liquidPositions_),
sizeof(liquidPositions_)
);
is.read
(
reinterpret_cast<char*>(&liquidPositionVectors_),
sizeof(liquidPositionVectors_)
);
*/
is.read
(
reinterpret_cast<char*>(&Vliq_),
sizeof(Vliq_)
+sizeof(partVliq_)
+sizeof(liquidPositionVectors_)
+sizeof(liquidPositions_)
+sizeof(contactList_)
+sizeof(previousContactList_)
);
}
}
// Check state of Istream
is.check
(
"WetParcel<ParcelType>::WetParcel"
"(const polyMesh&, Istream&, bool)"
);
}