mirror of
https://https.git.savannah.gnu.org/git/gnulib.git
synced 2026-06-15 23:35:50 +00:00
Paul Eggert
f4fccf8efd
Without this change, Ubuntu clang version 16.0.6 (15) issues warnings like this: “In file included from xalloc-die.c:25: ./error.h:28:3: warning: #include_next in file found relative to primary source file or found by absolute path; will search from start of include path [-Winclude-next-absolute-path]”. And sure enough, each file includes itself rather than the next include file and it’s only the subsidiary include that gets around to including the next include file. * lib/argmatch.c, lib/chdir-long.c, lib/clean-temp-simple.c: * lib/clean-temp.c, lib/closein.c, lib/closeout.c, lib/copy-acl.c: * lib/copy-file.c, lib/creat.c, lib/csharpcomp.c: * lib/csharpexec.c, lib/error.c, lib/exclude.c, lib/execute.c: * lib/faccessat.c, lib/fopen.c, lib/freopen.c, lib/getopt.c: * lib/getopt1.c, lib/git-merge-changelog.c, lib/javacomp.c: * lib/javaexec.c, lib/javaversion.c, lib/mkdir-p.c, lib/open.c: * lib/openat-die.c, lib/openat.c, lib/os2-spawn.c: * lib/pagealign_alloc.c, lib/pipe-filter-gi.c: * lib/pipe-filter-ii.c, lib/same.c, lib/set-acl.c: * lib/sigpipe-die.c, lib/spawn-pipe.c, lib/sys_socket.c, lib/truncate.c: * lib/unistd.c, lib/verror.c, lib/wait-process.c, lib/wctype-h.c: * lib/xalloc-die.c, lib/xfreopen.c, lib/xmemcoll.c, lib/xprintf.c: * lib/xsetenv.c, lib/xstdopen.c, lib/xstrtol-error.c: Use ‘#include <foo.h>’ instead of ‘#include "foo.h"’ if foo.h possibly uses #include_next. (However, don’t do this on OSF/1 which has its own problems.)
123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
/* Determine the Java version supported by javaexec.
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Copyright (C) 2006-2023 Free Software Foundation, Inc.
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Written by Bruno Haible <bruno@clisp.org>, 2006.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include "javaversion.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#if ENABLE_RELOCATABLE
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# include "relocatable.h"
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#else
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# define relocate(pathname) (pathname)
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# define relocate2(pathname,allocatedp) (*(allocatedp) = NULL, (pathname))
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#endif
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#include "javaexec.h"
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#include "spawn-pipe.h"
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#include "wait-process.h"
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#include <error.h>
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#include "gettext.h"
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#define _(str) gettext (str)
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/* Get PKGDATADIR. */
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#include "configmake.h"
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struct locals
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{
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/* OUT */
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char *line;
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};
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static bool
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execute_and_read_line (const char *progname,
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const char *prog_path, const char * const *prog_argv,
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void *private_data)
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{
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struct locals *l = (struct locals *) private_data;
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pid_t child;
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int fd[1];
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FILE *fp;
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char *line;
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size_t linesize;
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size_t linelen;
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int exitstatus;
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/* Open a pipe to the JVM. */
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child = create_pipe_in (progname, prog_path, prog_argv, NULL,
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DEV_NULL, false, true, false, fd);
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if (child == -1)
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return false;
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/* Retrieve its result. */
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fp = fdopen (fd[0], "r");
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if (fp == NULL)
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{
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error (0, errno, _("fdopen() failed"));
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return false;
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}
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line = NULL; linesize = 0;
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linelen = getline (&line, &linesize, fp);
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if (linelen == (size_t)(-1))
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{
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error (0, 0, _("%s subprocess I/O error"), progname);
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return false;
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}
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if (linelen > 0 && line[linelen - 1] == '\n')
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line[linelen - 1] = '\0';
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fclose (fp);
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/* Remove zombie process from process list, and retrieve exit status. */
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exitstatus =
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wait_subprocess (child, progname, true, false, true, false, NULL);
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if (exitstatus != 0)
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{
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free (line);
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return false;
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}
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l->line = line;
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return false;
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}
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char *
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javaexec_version (void)
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{
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const char *class_name = "javaversion";
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char *malloc_pkgdatadir;
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const char *pkgdatadir = relocate2 (PKGDATADIR, &malloc_pkgdatadir);
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const char *args[1];
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struct locals locals;
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args[0] = NULL;
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locals.line = NULL;
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execute_java_class (class_name, &pkgdatadir, 1, true, NULL, args,
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false, false, execute_and_read_line, &locals);
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free (malloc_pkgdatadir);
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return locals.line;
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}
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