lookbib.cpp revision 1.1.1.1 
1/*	$NetBSD: lookbib.cpp,v 1.1.1.1 2016/01/13 18:41:49 christos Exp $	*/
2
3// -*- C++ -*-
4/* Copyright (C) 1989-1992, 2000, 2001, 2002, 2003
5   Free Software Foundation, Inc.
6     Written by James Clark (jjc@jclark.com)
7
8This file is part of groff.
9
10groff is free software; you can redistribute it and/or modify it under
11the terms of the GNU General Public License as published by the Free
12Software Foundation; either version 2, or (at your option) any later
13version.
14
15groff is distributed in the hope that it will be useful, but WITHOUT ANY
16WARRANTY; without even the implied warranty of MERCHANTABILITY or
17FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
18for more details.
19
20You should have received a copy of the GNU General Public License along
21with groff; see the file COPYING.  If not, write to the Free Software
22Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
23
24#include "lib.h"
25
26#include <stdlib.h>
27#include <assert.h>
28#include <errno.h>
29
30#include "errarg.h"
31#include "error.h"
32#include "cset.h"
33
34#include "refid.h"
35#include "search.h"
36
37/* for isatty() */
38#include "posix.h"
39#include "nonposix.h"
40
41extern "C" {
42  const char *Version_string;
43}
44
45static void usage(FILE *stream)
46{
47  fprintf(stream, "usage: %s [-v] [-i XYZ] [-t N] database ...\n",
48	  program_name);
49}
50
51int main(int argc, char **argv)
52{
53  program_name = argv[0];
54  static char stderr_buf[BUFSIZ];
55  setbuf(stderr, stderr_buf);
56  int opt;
57  static const struct option long_options[] = {
58    { "help", no_argument, 0, CHAR_MAX + 1 },
59    { "version", no_argument, 0, 'v' },
60    { NULL, 0, 0, 0 }
61  };
62  while ((opt = getopt_long(argc, argv, "vVi:t:", long_options, NULL)) != EOF)
63    switch (opt) {
64    case 'V':
65      verify_flag = 1;
66      break;
67    case 'i':
68      linear_ignore_fields = optarg;
69      break;
70    case 't':
71      {
72	char *ptr;
73	long n = strtol(optarg, &ptr, 10);
74	if (n == 0 && ptr == optarg) {
75	  error("bad integer `%1' in `t' option", optarg);
76	  break;
77	}
78	if (n < 1)
79	  n = 1;
80	linear_truncate_len = int(n);
81	break;
82      }
83    case 'v':
84      {
85	printf("GNU lookbib (groff) version %s\n", Version_string);
86	exit(0);
87	break;
88      }
89    case CHAR_MAX + 1: // --help
90      usage(stdout);
91      exit(0);
92      break;
93    case '?':
94      usage(stderr);
95      exit(1);
96      break;
97    default:
98      assert(0);
99    }
100  if (optind >= argc) {
101    usage(stderr);
102    exit(1);
103  }
104  search_list list;
105  for (int i = optind; i < argc; i++)
106    list.add_file(argv[i]);
107  if (list.nfiles() == 0)
108    fatal("no databases");
109  char line[1024];
110  int interactive = isatty(fileno(stdin));
111  for (;;) {
112    if (interactive) {
113      fputs("> ", stderr);
114      fflush(stderr);
115    }
116    if (!fgets(line, sizeof(line), stdin))
117      break;
118    char *ptr = line;
119    while (csspace(*ptr))
120      ptr++;
121    if (*ptr == '\0')
122      continue;
123    search_list_iterator iter(&list, line);
124    const char *start;
125    int len;
126    int count;
127    for (count = 0; iter.next(&start, &len); count++) {
128      if (fwrite(start, 1, len, stdout) != (size_t)len)
129	fatal("write error on stdout: %1", strerror(errno));
130      // Can happen for last reference in file.
131      if (start[len - 1] != '\n')
132	putchar('\n');
133      putchar('\n');
134    }
135    fflush(stdout);
136    if (interactive) {
137      fprintf(stderr, "%d found\n", count);
138      fflush(stderr);
139    }
140  }
141  if (interactive)
142    putc('\n', stderr);
143  return 0;
144}
145
146