1 /* progress.c - emit progress status lines
2 * Copyright (C) 2003, 2006 Free Software Foundation, Inc.
4 * This file is part of GnuPG.
6 * GnuPG is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * GnuPG is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
30 /* Create a new context for use with the progress filter. We need to
31 allocate such contexts on the heap because there is no guarantee
32 that at the end of a function the filter has already been popped
33 off. In general this will happen but with malformed packets it is
34 possible that a filter has not yet reached the end-of-stream when
35 the function has done all processing. Checking in each function
36 that end-of-stream has been reached would be to cumbersome.
38 What we also do is to shortcut the progress handler by having this
39 function return NULL if progress information has not been
42 progress_filter_context_t *
43 new_progress_context (void)
45 progress_filter_context_t *pfx;
47 if (!opt.enable_progress_filter)
50 if (!is_status_enabled ())
53 pfx = xcalloc (1, sizeof *pfx);
59 /* Release a progress filter context. Passing NULL is explicitly
60 allowed and a no-op. */
62 release_progress_context (progress_filter_context_t *pfx)
66 log_assert (pfx->refcount);
67 if ( --pfx->refcount )
75 * The filter is used to report progress to the user.
78 progress_filter (void *opaque, int control,
79 IOBUF a, byte *buf, size_t *ret_len)
82 progress_filter_context_t *pfx = opaque;
84 if (control == IOBUFCTRL_INIT)
90 pfx->last_time = make_timestamp ();
92 sprintf (buffer, "%.20s ? %lu %lu",
93 pfx->what? pfx->what : "?",
96 write_status_text (STATUS_PROGRESS, buffer);
98 else if (control == IOBUFCTRL_UNDERFLOW)
100 u32 timestamp = make_timestamp ();
101 int len = iobuf_read (a, buf, *ret_len);
113 if ((len == -1 && pfx->offset != pfx->last)
114 || timestamp - pfx->last_time > 0)
118 sprintf (buffer, "%.20s ? %lu %lu",
119 pfx->what? pfx->what : "?",
122 write_status_text (STATUS_PROGRESS, buffer);
124 pfx->last = pfx->offset;
125 pfx->last_time = timestamp;
128 else if (control == IOBUFCTRL_FREE)
130 release_progress_context (pfx);
132 else if (control == IOBUFCTRL_DESC)
133 mem2str (buf, "progress_filter", *ret_len);
138 handle_progress (progress_filter_context_t *pfx, IOBUF inp, const char *name)
145 log_assert (opt.enable_progress_filter);
146 log_assert (is_status_enabled ());
148 if ( !iobuf_is_pipe_filename (name) && *name )
149 filesize = iobuf_get_filelength (inp, NULL);
150 else if (opt.set_filesize)
151 filesize = opt.set_filesize;
153 /* register the progress filter */
154 pfx->what = xstrdup (name ? name : "stdin");
155 pfx->total = filesize;
157 iobuf_push_filter (inp, progress_filter, pfx);