1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
3 Written by Ben Pfaff <blp@gnu.org>.
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 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, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
22 #include <gsl/gsl_errno.h>
26 #include "dictionary.h"
38 #include "debug-print.h"
40 static void parse_script (void) NO_RETURN;
41 static void handle_error (int code);
42 static int execute_command (void);
44 /* argv[0] with stripped leading directories. */
47 /* Whether FINISH. has been executed. */
50 /* The current date in the form DD MMM YYYY. */
54 /* If a segfault happens, issue a message to that effect and halt */
55 void bug_handler(int sig);
57 /* Handle quit/term/int signals */
58 void interrupt_handler(int sig);
60 /* Whether we're dropping down to interactive mode immediately because
61 we hit end-of-file unexpectedly (or whatever). */
62 int start_interactive;
69 /* Program entry point. */
71 main (int argc, char **argv)
74 signal (SIGSEGV, bug_handler);
75 signal (SIGFPE, bug_handler);
76 signal (SIGINT, interrupt_handler);
78 gsl_set_error_handler_off();
83 init_glob (argc, argv);
84 parse_command_line (argc, argv);
85 if (!outp_read_devices ())
86 msg (FE, _("Error initializing output drivers."));
93 /* Should never be reached */
97 /* Parses the entire script. */
104 handle_error (execute_command ());
107 err_hcf (err_error_count==0);
110 /* Parse and execute a command, returning its return code. */
112 execute_command (void)
116 /* Read the command's first token.
117 We may hit end of file.
118 If so, give the line reader a chance to proceed to the next file.
119 End of file is not handled transparently since the user may want
120 the dictionary cleared between files. */
121 getl_prompt = GETL_PRPT_STANDARD;
128 if (!getl_perform_delayed_reset ())
129 err_hcf (err_error_count==0);
132 /* Parse the command. */
133 getl_prompt = GETL_PRPT_CONTINUATION;
134 result = cmd_parse ();
136 /* Unset the /ALGORITHM subcommand if it was used */
137 unset_cmd_algorithm ();
139 /* Clear any auxiliary data from the dictionary. */
140 dict_clear_aux (default_dict);
145 /* Print an error message corresponding to the command return code
148 handle_error (int code)
156 msg (SW, _("This command not executed."));
159 case CMD_PART_SUCCESS_MAYBE:
160 msg (SW, _("Skipping the rest of this command. Part of "
161 "this command may have been executed."));
164 case CMD_PART_SUCCESS:
165 msg (SW, _("Skipping the rest of this command. This "
166 "command was fully executed up to this point."));
169 case CMD_TRAILING_GARBAGE:
170 msg (SW, _("Trailing garbage was encountered following "
171 "this command. The command was fully executed "
179 if (getl_reading_script)
182 while (token != T_STOP && token != '.')
187 msg (SW, _("The rest of this command has been discarded."));
194 /* If a segfault happens, issue a message to that effect and halt */
196 bug_handler(int sig UNUSED)
201 request_bug_report_and_abort("Floating Point Exception");
204 request_bug_report_and_abort("Segmentation Violation");
207 request_bug_report_and_abort("");
214 interrupt_handler(int sig UNUSED)