1 /* Determine the Java version supported by javaexec.
2 Copyright (C) 2006-2011 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2006.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "javaversion.h"
27 #if ENABLE_RELOCATABLE
28 # include "relocatable.h"
30 # define relocate(pathname) (pathname)
34 #include "spawn-pipe.h"
35 #include "wait-process.h"
39 #define _(str) gettext (str)
42 #include "configmake.h"
52 execute_and_read_line (const char *progname,
53 const char *prog_path, char **prog_argv,
56 struct locals *l = (struct locals *) private_data;
65 /* Open a pipe to the JVM. */
66 child = create_pipe_in (progname, prog_path, prog_argv, DEV_NULL, false,
72 /* Retrieve its result. */
73 fp = fdopen (fd[0], "r");
76 error (0, errno, _("fdopen() failed"));
80 line = NULL; linesize = 0;
81 linelen = getline (&line, &linesize, fp);
82 if (linelen == (size_t)(-1))
84 error (0, 0, _("%s subprocess I/O error"), progname);
87 if (linelen > 0 && line[linelen - 1] == '\n')
88 line[linelen - 1] = '\0';
92 /* Remove zombie process from process list, and retrieve exit status. */
94 wait_subprocess (child, progname, true, false, true, false, NULL);
106 javaexec_version (void)
108 const char *class_name = "javaversion";
109 const char *pkgdatadir = relocate (PKGDATADIR);
111 struct locals locals;
115 execute_java_class (class_name, &pkgdatadir, 1, true, NULL, args,
116 false, false, execute_and_read_line, &locals);