131 lines
2.8 KiB
C++
131 lines
2.8 KiB
C++
// -*- C++ -*-
|
|
/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
|
|
Written by James Clark (jjc@jclark.com)
|
|
|
|
This file is part of groff.
|
|
|
|
groff is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free
|
|
Software Foundation; either version 2, or (at your option) any later
|
|
version.
|
|
|
|
groff is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with groff; see the file COPYING. If not, write to the Free Software
|
|
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
|
|
#include "posix.h"
|
|
#include "lib.h"
|
|
#include "errarg.h"
|
|
#include "error.h"
|
|
|
|
#include "refid.h"
|
|
#include "search.h"
|
|
|
|
int linear_truncate_len = 6;
|
|
const char *linear_ignore_fields = "XYZ";
|
|
|
|
search_list::search_list()
|
|
: list(0), niterators(0), next_fid(1)
|
|
{
|
|
}
|
|
|
|
search_list::~search_list()
|
|
{
|
|
assert(niterators == 0);
|
|
while (list) {
|
|
search_item *tem = list->next;
|
|
delete list;
|
|
list = tem;
|
|
}
|
|
}
|
|
|
|
void search_list::add_file(const char *filename, int silent)
|
|
{
|
|
search_item *p = make_index_search_item(filename, next_fid);
|
|
if (!p) {
|
|
int fd = open(filename, O_RDONLY);
|
|
if (fd < 0) {
|
|
if (!silent)
|
|
error("can't open `%1': %2", filename, strerror(errno));
|
|
}
|
|
else
|
|
p = make_linear_search_item(fd, filename, next_fid);
|
|
}
|
|
if (p) {
|
|
for (search_item **pp = &list; *pp; pp = &(*pp)->next)
|
|
;
|
|
*pp = p;
|
|
next_fid = p->next_filename_id();
|
|
}
|
|
}
|
|
|
|
int search_list::nfiles() const
|
|
{
|
|
int n = 0;
|
|
for (search_item *ptr = list; ptr; ptr = ptr->next)
|
|
n++;
|
|
return n;
|
|
}
|
|
|
|
search_list_iterator::search_list_iterator(search_list *p, const char *q)
|
|
: list(p), ptr(p->list), iter(0), query(strsave(q)),
|
|
searcher(q, strlen(q), linear_ignore_fields, linear_truncate_len)
|
|
{
|
|
list->niterators += 1;
|
|
}
|
|
|
|
search_list_iterator::~search_list_iterator()
|
|
{
|
|
list->niterators -= 1;
|
|
a_delete query;
|
|
delete iter;
|
|
}
|
|
|
|
int search_list_iterator::next(const char **pp, int *lenp, reference_id *ridp)
|
|
{
|
|
while (ptr) {
|
|
if (iter == 0)
|
|
iter = ptr->make_search_item_iterator(query);
|
|
if (iter->next(searcher, pp, lenp, ridp))
|
|
return 1;
|
|
delete iter;
|
|
iter = 0;
|
|
ptr = ptr->next;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
search_item::search_item(const char *nm, int fid)
|
|
: next(0), name(strsave(nm)), filename_id(fid)
|
|
{
|
|
}
|
|
|
|
search_item::~search_item()
|
|
{
|
|
a_delete name;
|
|
}
|
|
|
|
int search_item::is_named(const char *nm) const
|
|
{
|
|
return strcmp(name, nm) == 0;
|
|
}
|
|
|
|
int search_item::next_filename_id() const
|
|
{
|
|
return filename_id + 1;
|
|
}
|
|
|
|
search_item_iterator::~search_item_iterator()
|
|
{
|
|
}
|