Dv::Util::pstream Class Reference
A wrapper that makes a stream of popen(command,"r") or popen(command,"w") .
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#include <pstream.h>
List of all members.
Public Member Functions |
| | pstream (const std::string &command, const std::string &mode) throw (std::runtime_error) |
| | Constructor.
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| size_t | close () throw (std::runtime_error) |
| | Close stream.
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| | ~pstream () throw (std::runtime_error) |
| | Destructor.
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| const std::string & | command () const |
| const std::string & | mode () const |
Private Attributes |
| void * | file_ |
| const std::string | command_ |
| const std::string | mode_ |
Detailed Description
A wrapper that makes a stream of popen(command,"r") or popen(command,"w") .
Definition at line 15 of file pstream.h.
Constructor & Destructor Documentation
| Dv::Util::pstream::pstream |
( |
const std::string & |
command, |
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const std::string & |
mode | |
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) |
| | throw (std::runtime_error) |
Constructor.
Create an input or output stream for data produced by a command. If mode is "r" (read), reading the stream reads output from the command. If mode is "w" (write), writing the stream sends the data to the command's standard input.
- Parameters:
-
| command | see popen(3) |
| mode | read ("r") or write ("w"), see popen(3). |
- Exceptions:
-
| std::runtime_error | if anything goes wrong. |
- Warning:
- E.g. for a stream opened in read mode, the default standard ouput of the command is still the standard output of the parent process.
| Dv::Util::pstream::~pstream |
( |
|
) |
throw (std::runtime_error) |
Destructor.
- Exceptions:
-
| std::runtime_error | if anything goes wrong. |
Member Function Documentation
| size_t Dv::Util::pstream::close |
( |
|
) |
throw (std::runtime_error) |
Close stream.
Wait for command to finish, then return its exit status. After a close, the stream is unusable.
- Returns:
- exit status of command as returned by main().
- Warning:
- A negative exit status gets converted to a positive number, i.e. -1 becomes 255.
- Exceptions:
-
| std::runtime_error | if command did not exit normally or any other problem. |
| const std::string& Dv::Util::pstream::command |
( |
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) |
const [inline] |
| const std::string& Dv::Util::pstream::mode |
( |
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) |
const [inline] |
Member Data Documentation
The documentation for this class was generated from the following file: