Finish reforming error message support. In this phase, move message.c

[pspp-builds.git] / src / libpspp / message.c

diff --git a/src/libpspp/message.c b/src/libpspp/message.c
new file mode 100644 (file)
index 0000000..34ca65c
--- /dev/null
+++ b/src/libpspp/message.c
@@ -0,0 +1,155 @@
+/* PSPP - computes sample statistics.
+   Copyright (C) 1997-9, 2000 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 <libpspp/message.h>
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <libpspp/alloc.h>
+#include <libpspp/version.h>
+
+#include "progname.h"
+#include "xvasprintf.h"
+
+/* Current command name as set by msg_set_command_name(). */
+static char *command_name;
+
+/* Message handler as set by msg_init(). */
+static void (*msg_handler) (const struct msg *);
+
+/* Public functions. */
+
+/* Writes error message in CLASS, with text FORMAT, formatted with
+   printf, to the standard places. */
+void
+msg (enum msg_class class, const char *format, ...)
+{
+  struct msg m;
+  va_list args;
+
+  m.category = msg_class_to_category (class);
+  m.severity = msg_class_to_severity (class);
+  msg_location (&m.where);
+  va_start (args, format);
+  m.text = xvasprintf (format, args);
+  va_end (args);
+
+  msg_emit (&m);
+}
+
+void
+msg_init (void (*handler) (const struct msg *)) 
+{
+  msg_handler = handler;
+}
+
+void
+msg_done (void) 
+{
+}
+
+/* Emits M as an error message.
+   Frees allocated data in M. */
+void
+msg_emit (struct msg *m) 
+{
+  msg_handler (m);
+  free (m->text);
+}
+\f
+/* Private functions. */
+
+/* Sets COMMAND_NAME as the command name included in some kinds
+   of error messages. */
+void
+msg_set_command_name (const char *command_name_) 
+{
+  free (command_name);
+  command_name = command_name_ ? xstrdup (command_name_) : NULL;
+}
+
+/* Returns the current command name, or NULL if none. */
+const char *
+msg_get_command_name (void) 
+{
+  return command_name;
+}
+
+void 
+request_bug_report_and_abort(const char *msg )
+{
+  fprintf(stderr,
+         "******************************************************************\n"
+         "You have discovered a bug in PSPP.\n\n"
+         "  Please report this, by sending "
+         "an email to " PACKAGE_BUGREPORT ",\n"
+         "explaining what you were doing when this happened, and including\n"
+         "a sample of your input file which caused it.\n");
+
+  fprintf(stderr,
+         "Also, please copy the following lines into your bug report:\n\n"
+         "bare_version:        %s\n" 
+         "version:             %s\n"
+         "stat_version:        %s\n"
+         "host_system:         %s\n"
+         "build_system:        %s\n"
+         "default_config_path: %s\n"
+         "include_path:        %s\n"
+         "groff_font_path:     %s\n"
+         "locale_dir:          %s\n"
+         "compiler version:    %s\n"
+         ,
+
+         bare_version,         
+         version,
+         stat_version,
+         host_system,        
+         build_system,
+         default_config_path,
+         include_path, 
+         groff_font_path,
+         locale_dir,
+#ifdef __VERSION__
+         __VERSION__
+#else
+         "Unknown"
+#endif
+         );     
+
+  if ( msg )
+    fprintf(stderr,"Diagnosis: %s\n",msg);
+
+  fprintf(stderr,
+    "******************************************************************\n");
+
+  abort();
+}
+
+void 
+msg_assert_fail(const char *expr, const char *file, int line)
+{
+  char msg[256];
+  snprintf(msg,256,"Assertion failed: %s:%d; (%s)",file,line,expr);
+  request_bug_report_and_abort( msg );
+}
+