1 /*
2 * progress.c - Numeric progress meter
3 *
4 * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
5 * 2003, 2004, 2005 by Theodore Ts'o.
6 *
7 * %Begin-Header%
8 * This file may be redistributed under the terms of the GNU Public
9 * License.
10 * %End-Header%
11 */
12
13 #include "config.h"
14 #include "ext2fs.h"
15 #include "ext2fsP.h"
16
17 #include <time.h>
18
19 static char spaces[80], backspaces[80];
20 static time_t last_update;
21
22 struct ext2fs_progress_ops ext2fs_numeric_progress_ops = {
23 .init = ext2fs_numeric_progress_init,
24 .update = ext2fs_numeric_progress_update,
25 .close = ext2fs_numeric_progress_close,
26 };
27
int_log10(unsigned int arg)28 static int int_log10(unsigned int arg)
29 {
30 int l;
31
32 for (l=0; arg ; l++)
33 arg = arg / 10;
34 return l;
35 }
36
ext2fs_numeric_progress_init(ext2_filsys fs,struct ext2fs_numeric_progress_struct * progress,const char * label,__u64 max)37 void ext2fs_numeric_progress_init(ext2_filsys fs,
38 struct ext2fs_numeric_progress_struct * progress,
39 const char *label, __u64 max)
40 {
41 /*
42 * The PRINT_PROGRESS flag turns on or off ALL
43 * progress-related messages, whereas the SKIP_PROGRESS
44 * environment variable prints the start and end messages but
45 * not the numeric countdown in the middle.
46 */
47 if (!(fs->flags & EXT2_FLAG_PRINT_PROGRESS))
48 return;
49
50 memset(spaces, ' ', sizeof(spaces)-1);
51 spaces[sizeof(spaces)-1] = 0;
52 memset(backspaces, '\b', sizeof(backspaces)-1);
53 backspaces[sizeof(backspaces)-1] = 0;
54
55 memset(progress, 0, sizeof(*progress));
56 if (getenv("E2FSPROGS_SKIP_PROGRESS"))
57 progress->skip_progress++;
58
59
60 /*
61 * Figure out how many digits we need
62 */
63 progress->max = max;
64 progress->log_max = int_log10(max);
65
66 if (label) {
67 fputs(label, stdout);
68 fflush(stdout);
69 }
70 last_update = 0;
71 }
72
ext2fs_numeric_progress_update(ext2_filsys fs,struct ext2fs_numeric_progress_struct * progress,__u64 val)73 void ext2fs_numeric_progress_update(ext2_filsys fs,
74 struct ext2fs_numeric_progress_struct * progress,
75 __u64 val)
76 {
77 time_t now;
78
79 if (!(fs->flags & EXT2_FLAG_PRINT_PROGRESS))
80 return;
81 if (progress->skip_progress)
82 return;
83 now = time(0);
84 if (now == last_update)
85 return;
86 last_update = now;
87
88 printf("%*llu/%*llu", progress->log_max, val,
89 progress->log_max, progress->max);
90 fprintf(stdout, "%.*s", (2*progress->log_max)+1, backspaces);
91 }
92
ext2fs_numeric_progress_close(ext2_filsys fs,struct ext2fs_numeric_progress_struct * progress,const char * message)93 void ext2fs_numeric_progress_close(ext2_filsys fs,
94 struct ext2fs_numeric_progress_struct * progress,
95 const char *message)
96 {
97 if (!(fs->flags & EXT2_FLAG_PRINT_PROGRESS))
98 return;
99 fprintf(stdout, "%.*s", (2*progress->log_max)+1, spaces);
100 fprintf(stdout, "%.*s", (2*progress->log_max)+1, backspaces);
101 if (message)
102 fputs(message, stdout);
103 }
104