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java.lang.Objectorg.biojava.utils.ProcessTools
public class ProcessTools
Convenience methods for running external processes. This class
offers wrappers around the java.lang.Process
API,
but hides away the details of managing threads and process I/O.
StringWriter out = new StringWriter(); ProcessTools.exec( new String[] {"/usr/bin/wc", "-w"}, "The quick brown fox jumps over the lazy dog", out, null ); int numWords = Integer.parseInt(out.toString().trim());
Method Summary | |
---|---|
static int |
exec(String[] args,
Reader input,
Writer stdout,
Writer stderr)
Deprecated. Execute the specified command and wait for it to return. |
static int |
exec(String[] args,
String[] envp,
File dir,
Reader input,
Writer stdout,
Writer stderr,
long timeout)
Deprecated. Execute the specified command and wait for it to return, or kill it if the specified timeout expires first. |
static int |
exec(String command,
Reader input,
Writer stdout,
Writer stderr)
Deprecated. Execute the specified command and wait for it to return. |
static int |
exec(String command,
String[] envp,
File dir,
Reader input,
Writer stdout,
Writer stderr,
long timeout)
Deprecated. Execute the specified command and wait for it to return. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static int exec(String[] args, Reader input, Writer stdout, Writer stderr) throws IOException
args
- the command line to execute.input
- data to present to the process' standard input, or null
if the process does not require input.stdout
- a Writer
which will be filled with data from the process' output stream, or null
to ignore output.stderr
- a Writer
which will be filled with data from the process' error stream, or null
to ignore output.
IOException
public static int exec(String[] args, String[] envp, File dir, Reader input, Writer stdout, Writer stderr, long timeout) throws IOException, ProcessTimeoutException
args
- the command line to execute.envp
- environment variables for the child process, or null
to inherit the current set.dir
- working directory for the child process, or null
to inherit the current directory.input
- data to present to the process' standard input, or null
if the process does not require input.stdout
- a Writer
which will be filled with data from the process' output stream, or null
to ignore output.stderr
- a Writer
which will be filled with data from the process' error stream, or null
to ignore output.timeout
- maximum run-time (in milliseconds) for the child process. A value of 0 indicates no limit.
IOException
- if an error occurs while starting or communicating with the process
ProcessTimeoutException
- if the child process was killed because its timeout had expired.public static int exec(String command, Reader input, Writer stdout, Writer stderr) throws IOException
command
- the command line to execute.input
- data to present to the process' standard input, or
null
if the process does not require input.stdout
- a Writer
which will be filled with data
from the process' output stream, or null
to ignore output.stderr
- a Writer
which will be filled with data
from the process' error stream, or null
to ignore output.
IOException
- if an error occurs while starting or communicating
with the processpublic static int exec(String command, String[] envp, File dir, Reader input, Writer stdout, Writer stderr, long timeout) throws IOException, ProcessTimeoutException
command
- the command line to execute.input
- data to present to the process' standard input, or
null
if the process does not require input.stdout
- a Writer
which will be filled with data
from the process' output stream, or null
to ignore output.stderr
- a Writer
which will be filled with data
from the process' error stream, or null
to ignore output.timeout
- maximum run-time (in milliseconds) for the child process. A value of 0 indicates no limit.
IOException
- if an error occurs while starting or communicating
with the process
ProcessTimeoutException
- if the child process was killed because its timeout had expired.
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