1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
3 Written by Ben Pfaff <blp@gnu.org>.
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
21 #define file_handle_h 1
23 /* File handle provider (fhp).
25 This module provides file handles in the form of file_handle
26 structures to the dfm and sfm modules, which are known as file
27 handle users (fhusers). fhp does not know anything about file
35 /* Services that fhusers provide to fhp. */
38 int magic; /* Magic identifier for fhuser. */
39 const char *name; /* String identifier for fhuser. */
41 void (*close) (struct file_handle *); /* Closes the file. */
44 /* Mostly-opaque structure. */
47 struct private_file_handle *private;
48 const struct fh_ext_class *class; /* Polymorphism support. */
49 void *ext; /* Extension struct for fhuser use. */
55 MODE_TEXT, /* New-line delimited lines. */
56 MODE_BINARY /* Fixed-length records. */
59 /* Pointer to the file handle that corresponds to data in the command
60 file entered via BEGIN DATA/END DATA. */
61 extern struct file_handle *inline_file;
64 void fh_init_files (void);
66 /* Opening and closing handles. */
67 struct file_handle *fh_parse_file_handle (void);
68 void fh_close_handle (struct file_handle *handle);
71 const char *handle_get_name (const struct file_handle *handle);
72 const char *handle_get_filename (const struct file_handle *handle);
73 enum file_handle_mode handle_get_mode (const struct file_handle *);
74 size_t handle_get_record_width (const struct file_handle *);
76 #endif /* !file_handle.h */