1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 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/>. */
27 #include "libpspp/assertion.h"
28 #include "libpspp/compiler.h"
29 #include "libpspp/misc.h"
30 #include "language/lexer/scan.h"
31 #include "language/lexer/token.h"
34 #include "gl/ftoastr.h"
35 #include "gl/progname.h"
36 #include "gl/read-file.h"
37 #include "gl/xalloc.h"
39 /* -a/--auto, -b/--batch, -i/--interactive: syntax mode. */
40 static enum segmenter_mode mode = SEG_MODE_AUTO;
42 static const char *parse_options (int argc, char **argv);
43 static void usage (void) NO_RETURN;
46 main (int argc, char *argv[])
50 enum segment_type type;
51 struct substring string;
55 const char *file_name;
59 size_t n_segs, allocated_segs;
64 set_program_name (argv[0]);
65 file_name = parse_options (argc, argv);
67 /* Read from stdin into 'input'. Ensure that 'input' ends in a new-line
68 followed by a null byte. */
69 input = (!strcmp (file_name, "-")
70 ? fread_file (stdin, &length)
71 : read_file (file_name, &length));
73 error (EXIT_FAILURE, errno, "reading %s failed", file_name);
74 input = xrealloc (input, length + 3);
75 if (length == 0 || input[length - 1] != '\n')
76 input[length++] = '\n';
77 input[length++] = '\0';
80 n_segs = allocated_segs = 0;
82 segmenter_init (&s, mode);
83 for (offset = 0; offset < length; offset += n)
85 enum segment_type type;
87 n = segmenter_push (&s, input + offset, length - offset, &type);
89 assert (offset + n <= length);
91 if (n_segs >= allocated_segs)
92 segs = x2nrealloc (segs, &allocated_segs, sizeof *segs);
94 segs[n_segs].type = type;
95 segs[n_segs].string.string = input + offset;
96 segs[n_segs].string.length = n;
100 for (i = 0; i < n_segs; )
102 enum scan_result result;
103 struct scanner scanner;
107 scanner_init (&scanner, &token);
115 result = scanner_push (&scanner, seg->type, seg->string, &token);
116 if (result == SCAN_SAVE)
119 while (result == SCAN_MORE || result == SCAN_SAVE);
121 if (result == SCAN_BACK)
127 printf ("%s", scan_type_to_string (token.type));
128 if (token.number != 0.0)
130 char s[DBL_BUFSIZE_BOUND];
132 dtoastr (s, sizeof s, 0, 0, token.number);
135 if (token.string.string != NULL || token.string.length > 0)
136 printf (" \"%.*s\"", (int) token.string.length, token.string.string);
139 token_destroy (&token);
148 parse_options (int argc, char **argv)
152 static const struct option options[] =
154 {"auto", no_argument, NULL, 'a'},
155 {"batch", no_argument, NULL, 'b'},
156 {"interactive", no_argument, NULL, 'i'},
157 {"help", no_argument, NULL, 'h'},
161 int c = getopt_long (argc, argv, "abih", options, NULL);
168 mode = SEG_MODE_AUTO;
172 mode = SEG_MODE_BATCH;
176 mode = SEG_MODE_INTERACTIVE;
195 if (optind + 1 != argc)
196 error (1, 0, "exactly one non-option argument required; "
197 "use --help for help");
205 %s, to test breaking PSPP syntax into tokens\n\
206 usage: %s [OPTIONS] INPUT\n\
209 -1, --one-segment feed one segment at a time\n\
210 -a, --auto use \"auto\" syntax mode\n\
211 -b, --batch use \"batch\" syntax mode\n\
212 -i, --interactive use \"interactive\" syntax mode (default)\n\
213 -v, --verbose include rows and column numbers in output\n\
214 -h, --help print this help message\n",
215 program_name, program_name);