/**
* Executes the command through a system 'exec'. This method will be used only if the supporting
* Java Native Interface library could not be loaded.
*/
private synchronized void pure_exec(String[] cmd) throws IOException {
if (null != this.environ.getExecutable()) {
cmd[0] = this.environ.getExecutable();
}
p = rt.exec(cmd, this.environ.getEnvp());
InputStream is = p.getInputStream();
Debug.verbose("P4Process.exec().is: " + is);
InputStreamReader isr = new InputStreamReader(is);
Debug.verbose("P4Process.exec().isr: " + isr);
in = new BufferedReader(isr);
InputStream es = p.getErrorStream();
Debug.verbose("P4Process.exec().es: " + es);
InputStreamReader esr = new InputStreamReader(es);
Debug.verbose("P4Process.exec().esr: " + esr);
err = new BufferedReader(esr);
OutputStream os = p.getOutputStream();
Debug.verbose("P4Process.exec().os: " + os);
OutputStreamWriter osw = new OutputStreamWriter(os);
Debug.verbose("P4Process.exec().osw: " + osw);
out =
new FilterWriter(new BufferedWriter(osw)) {
public void write(String str) throws IOException {
super.write(str);
System.out.print("P4DebugOutput: " + str);
}
};
}
/**
* Executes a p4 command. This uses the class environment information to execute the p4 command
* specified in the String array. This array contains all the command line arguments that will be
* specified for execution, including "p4" in the first position.
*
* @param cmd Array of command line arguments ("p4" must be first).
*/
public synchronized void exec(String[] cmd) throws IOException {
String[] pre_cmds = new String[12];
int i = 0;
pre_cmds[i++] = cmd[0];
pre_cmds[i++] = "-s"; // Forces all commands to use stdout for message
// reporting, no longer read stderr
if (!getEnv().getPort().trim().equals("")) {
pre_cmds[i++] = "-p";
pre_cmds[i++] = getEnv().getPort();
}
if (!getEnv().getUser().trim().equals("")) {
pre_cmds[i++] = "-u";
pre_cmds[i++] = getEnv().getUser();
}
if (!getEnv().getClient().trim().equals("")) {
pre_cmds[i++] = "-c";
pre_cmds[i++] = getEnv().getClient();
}
if (!getEnv().getPassword().trim().equals("")) {
pre_cmds[i++] = "-P";
pre_cmds[i++] = getEnv().getPassword();
}
if (cmd[1].equals("-x")) {
pre_cmds[i++] = "-x";
pre_cmds[i++] = cmd[2];
}
new_cmd = new String[(i + cmd.length) - 1];
for (int j = 0; j < (i + cmd.length) - 1; j++) {
if (j < i) {
new_cmd[j] = pre_cmds[j];
} else {
new_cmd[j] = cmd[(j - i) + 1];
}
}
Debug.verbose("P4Process.exec: ", new_cmd);
if (P4JNI.isValid()) {
native_exec(new_cmd);
using_native = true;
} else {
pure_exec(new_cmd);
using_native = false;
}
}
/**
* Reads the next line from the process. This method will be used only if the supporting Java
* Native Interface library could not be loaded.
*/
private synchronized String pure_readLine() {
String line;
long current, timeout = ((new Date()).getTime()) + threshold;
if (null == p || null == in || null == err) return null;
// Debug.verbose("P4Process.readLine()");
try {
for (; ; ) {
if (null == p || null == in || null == err) {
Debug.error("P4Process.readLine(): Something went null");
return null;
}
current = (new Date()).getTime();
if (current >= timeout) {
Debug.error("P4Process.readLine(): Timeout");
// If this was generating a new object from stdin, return an
// empty string. Otherwise, return null.
for (int i = 0; i < new_cmd.length; i++) {
if (new_cmd[i].equals("-i")) return "";
}
return null;
}
// Debug.verbose("P4Process.readLine().in: "+in);
try {
/**
* If there's something coming in from stdin, return it. We assume that the p4 command was
* called with -s which sends all messages to standard out pre-pended with a string that
* indicates what kind of messsage it is error warning text info exit
*/
// Some errors still come in on Standard error
while (err.ready()) {
line = err.readLine();
if (null != line) {
addP4Error(line + "\n");
}
}
if (in.ready()) {
line = in.readLine();
Debug.verbose("From P4:" + line);
if (line.startsWith("error")) {
if (!line.trim().equals("")
&& (-1 == line.indexOf("up-to-date"))
&& (-1 == line.indexOf("no file(s) to resolve"))) {
addP4Error(line);
}
} else if (line.startsWith("warning")) {
} else if (line.startsWith("text")) {
} else if (line.startsWith("info")) {
} else if (line.startsWith("exit")) {
int exit_code =
new Integer(line.substring(line.indexOf(" ") + 1, line.length())).intValue();
if (0 == exit_code) {
Debug.verbose("P4 Exec Complete.");
} else {
Debug.error("P4 exited with an Error!");
}
return null;
}
if (!raw) line = line.substring(line.indexOf(":") + 1).trim();
Debug.verbose("P4Process.readLine(): " + line);
return line;
}
} catch (NullPointerException ne) {
}
// If there's nothing on stdin or stderr, check to see if the
// process has exited. If it has, return null.
try {
exit_code = p.exitValue();
return null;
} catch (IllegalThreadStateException ie) {
Debug.verbose("P4Process: Thread is not done yet.");
}
// Sleep for a second, so this thread can't become a CPU hog.
try {
Debug.verbose("P4Process: Sleeping...");
Thread.sleep(100); // Sleep for 1/10th of a second.
} catch (InterruptedException ie) {
}
}
} catch (IOException ex) {
return null;
}
}
