Oops. committing new files

[pspp-builds.git] / src / libpspp / msg-locator.c

diff --git a/src/libpspp/msg-locator.c b/src/libpspp/msg-locator.c
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+/* PSPP - computes sample statistics.
+   Copyright (C) 1997-9, 2000, 2006 Free Software Foundation, Inc.
+   Written by Ben Pfaff <blp@gnu.org>.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA. */
+
+#include <config.h>
+#include <stdlib.h>
+#include <libpspp/alloc.h>
+#include "msg-locator.h"
+#include <libpspp/message.h>
+#include <libpspp/assertion.h>
+#include "getl.h"
+
+/* File locator stack. */
+static const struct msg_locator **file_loc;
+
+static int nfile_loc, mfile_loc;
+
+void
+msg_locator_done (void)
+{
+  free(file_loc);
+  file_loc = NULL;
+  nfile_loc = mfile_loc = 0;
+}
+
+
+/* File locator stack functions. */
+
+/* Pushes F onto the stack of file locations. */
+void
+msg_push_msg_locator (const struct msg_locator *loc)
+{
+  if (nfile_loc >= mfile_loc)
+    {
+      if (mfile_loc == 0)
+       mfile_loc = 8;
+      else
+       mfile_loc *= 2;
+
+      file_loc = xnrealloc (file_loc, mfile_loc, sizeof *file_loc);
+    }
+
+  file_loc[nfile_loc++] = loc;
+}
+
+/* Pops F off the stack of file locations.
+   Argument F is only used for verification that that is actually the
+   item on top of the stack. */
+void
+msg_pop_msg_locator (const struct msg_locator *loc)
+{
+  assert (nfile_loc >= 0 && file_loc[nfile_loc - 1] == loc);
+  nfile_loc--;
+}
+
+/* Puts the current file and line number into LOC, or NULL and -1 if
+   none. */
+void
+get_msg_location (struct msg_locator *loc)
+{
+  if (nfile_loc)
+    {
+      *loc = *file_loc[nfile_loc - 1];
+    }
+  else
+    {
+      loc->file_name = getl_source_name ();
+      loc->line_number = getl_source_location ();
+    }
+}