1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000 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 "syntax-file.h"
25 #include <data/file-name.h>
26 #include <data/settings.h>
27 #include <data/variable.h>
28 #include <language/command.h>
29 #include <language/lexer/lexer.h>
30 #include <libpspp/assertion.h>
31 #include <libpspp/message.h>
32 #include <libpspp/message.h>
33 #include <libpspp/str.h>
34 #include <libpspp/verbose-msg.h>
35 #include <libpspp/version.h>
36 #include <output/table.h>
38 #include <libpspp/ll.h>
45 #define _(msgid) gettext (msgid)
47 #include <libpspp/getl.h>
50 struct syntax_file_source
52 struct getl_interface parent ;
56 /* Current location. */
57 char *fn; /* File name. */
58 int ln; /* Line number. */
62 name (const struct getl_interface *s)
64 const struct syntax_file_source *sfs = (const struct syntax_file_source *) s;
69 line_number (const struct getl_interface *s)
71 const struct syntax_file_source *sfs = (const struct syntax_file_source *) s;
76 /* Reads a line from syntax file source S into LINE.
77 Returns true if successful, false at end of file. */
79 read_syntax_file (struct getl_interface *s,
82 struct syntax_file_source *sfs = (struct syntax_file_source *) s;
84 /* Open file, if not yet opened. */
85 if (sfs->syntax_file == NULL)
87 verbose_msg (1, _("opening \"%s\" as syntax file"), sfs->fn);
88 sfs->syntax_file = fn_open (sfs->fn, "r");
90 if (sfs->syntax_file == NULL)
92 msg (ME, _("Opening `%s': %s."), sfs->fn, strerror (errno));
97 /* Read line from file and remove new-line.
98 Skip initial "#! /usr/bin/pspp" line. */
102 if (!ds_read_line (line, sfs->syntax_file))
104 if (ferror (sfs->syntax_file))
105 msg (ME, _("Reading `%s': %s."), sfs->fn, strerror (errno));
108 ds_chomp (line, '\n');
110 while (sfs->ln == 1 && !memcmp (ds_cstr (line), "#!", 2));
112 /* Echo to listing file, if configured to do so. */
114 tab_output_text (TAB_LEFT | TAB_FIX, ds_cstr (line));
120 syntax_close (struct getl_interface *s)
122 struct syntax_file_source *sfs = (struct syntax_file_source *) s;
124 if (sfs->syntax_file && EOF == fn_close (sfs->fn, sfs->syntax_file))
125 msg (MW, _("Closing `%s': %s."), sfs->fn, strerror (errno));
131 always_false (const struct getl_interface *s UNUSED)
137 /* Creates a syntax file source with file name FN. */
138 struct getl_interface *
139 create_syntax_file_source (const char *fn)
141 struct syntax_file_source *ss = xzalloc (sizeof (*ss));
143 ss->fn = xstrdup (fn);
145 ss->parent.interactive = always_false;
146 ss->parent.read = read_syntax_file ;
147 ss->parent.filter = NULL;
148 ss->parent.close = syntax_close ;
149 ss->parent.name = name ;
150 ss->parent.location = line_number;
152 return (struct getl_interface *) ss;