1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000, 2009, 2010, 2011 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 #include "language/syntax-file.h"
26 #include "data/file-name.h"
27 #include "data/settings.h"
28 #include "data/variable.h"
29 #include "language/command.h"
30 #include "language/lexer/lexer.h"
31 #include "language/prompt.h"
32 #include "libpspp/assertion.h"
33 #include "libpspp/cast.h"
34 #include "libpspp/getl.h"
35 #include "libpspp/ll.h"
36 #include "libpspp/message.h"
37 #include "libpspp/str.h"
38 #include "libpspp/version.h"
39 #include "output/tab.h"
41 #include "gl/xalloc.h"
44 #define _(msgid) gettext (msgid)
46 struct syntax_file_source
48 struct getl_interface parent ;
52 /* Current location. */
53 char *fn; /* File name. */
54 int ln; /* Line number. */
58 name (const struct getl_interface *s)
60 const struct syntax_file_source *sfs = UP_CAST (s, struct syntax_file_source,
66 line_number (const struct getl_interface *s)
68 const struct syntax_file_source *sfs = UP_CAST (s, struct syntax_file_source,
74 /* Reads a line from syntax file source S into LINE.
75 Returns true if successful, false at end of file. */
77 read_syntax_file (struct getl_interface *s,
80 struct syntax_file_source *sfs = UP_CAST (s, struct syntax_file_source,
83 if (sfs->syntax_file == NULL)
86 /* Read line from file and remove new-line.
87 Skip initial "#! /usr/bin/pspp" line. */
92 if (!ds_read_line (line, sfs->syntax_file, SIZE_MAX))
94 if (ferror (sfs->syntax_file))
95 msg (ME, _("Reading `%s': %s."), sfs->fn, strerror (errno));
98 ds_chomp (line, '\n');
100 while (sfs->ln == 1 && !memcmp (ds_cstr (line), "#!", 2));
106 syntax_close (struct getl_interface *s)
108 struct syntax_file_source *sfs = UP_CAST (s, struct syntax_file_source,
111 if (sfs->syntax_file && EOF == fn_close (sfs->fn, sfs->syntax_file))
112 msg (MW, _("Closing `%s': %s."), sfs->fn, strerror (errno));
118 always_false (const struct getl_interface *s UNUSED)
124 /* Creates a syntax file source with file name FN. */
125 struct getl_interface *
126 create_syntax_file_source (const char *fn)
128 struct syntax_file_source *ss = xzalloc (sizeof (*ss));
130 ss->fn = xstrdup (fn);
131 ss->syntax_file = fn_open (ss->fn, "r");
132 if (ss->syntax_file == NULL)
133 msg (ME, _("Opening `%s': %s."), ss->fn, strerror (errno));
135 ss->parent.interactive = always_false;
136 ss->parent.read = read_syntax_file ;
137 ss->parent.filter = NULL;
138 ss->parent.close = syntax_close ;
139 ss->parent.name = name ;
140 ss->parent.location = line_number;