RCU::Shell Namespace Reference

Functions
void	exec (const std::string &cmd)
	effects: execute the given command guarantee: strong failures: out of memory II failures: system failure failures: command failure More...
std::string	exec_read (const std::string &cmd)
	effects: execute the given command and return the output returns: the output of the command guarantee: strong failures: out of memory III failures: system failure failures: command failure More...
std::string	exec_read (const std::string &cmd, int &rc)
	effects: execute the given command and return the output returns: the output of the command guarantee: strong failures: out of memory III failures: system failure failures: command failure More...
std::string	quote (const std::string &name)
	effects: quote the given name to protect it from the shell returns: the quoted name guarantee: strong failures: out of memory II More...

Function Documentation

exec()

void RCU::Shell::exec

(

const std::string &

cmd

)

effects: execute the given command guarantee: strong failures: out of memory II failures: system failure failures: command failure

Definition at line 29 of file ShellExec.cxx.

    {
      if (gSystem->Exec (cmd.c_str()) != 0)
    RCU_THROW_MSG ("command failed: " + cmd);
    }

exec_read() [1/2]

std::string RCU::Shell::exec_read

(

const std::string &

cmd

)

effects: execute the given command and return the output returns: the output of the command guarantee: strong failures: out of memory III failures: system failure failures: command failure

Definition at line 37 of file ShellExec.cxx.

    {
      int rc = 0;
      std::string result = exec_read (cmd, rc);
      if (rc != 0)
    RCU_THROW_MSG ("command failed: " + cmd + "\nwith output:\n" + result);
      return result;
    }

exec_read() [2/2]

std::string RCU::Shell::exec_read	(	const std::string &	cmd,
		int &	rc
	)

effects: execute the given command and return the output returns: the output of the command guarantee: strong failures: out of memory III failures: system failure failures: command failure

Definition at line 48 of file ShellExec.cxx.

    {
      std::string result;
      FILE *pipe = 0;
      try
      {
    std::vector<char> buffer (1024);
    size_t read;
      
    pipe = popen (cmd.c_str(), "r");
    while ((read = fread (&buffer[0], 1, buffer.size(), pipe)) > 0)
    {
      result.append (&buffer[0], read);
    }
    rc = pclose (pipe);
    pipe = nullptr;
    return result;
      } catch (...)
      {
    if (pipe)
      rc = pclose (pipe);
    throw;
      }
    }

quote()

std::string RCU::Shell::quote

(

const std::string &

name

)

effects: quote the given name to protect it from the shell returns: the quoted name guarantee: strong failures: out of memory II

Definition at line 75 of file ShellExec.cxx.

    {
      std::string result;
      for (std::string::const_iterator iter = name.begin(),
         end = name.end(); iter != end; ++ iter)
      {
    if (!isalnum (*iter) && *iter != '/' && *iter != '.' &&
        *iter != '-')
      result += '\\';
    result += *iter;
      };
      if (result.empty())
    result = "\"\"";
      return result;
    }