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 "ext2fs.h"
14 #include "ext2fsP.h"
15
16 #include <time.h>
17
18 static char spaces[80], backspaces[80];
19 static time_t last_update;
20
int_log10(unsigned int arg)21 static int int_log10(unsigned int arg)
22 {
23 int l;
24
25 for (l=0; arg ; l++)
26 arg = arg / 10;
27 return l;
28 }
29
ext2fs_numeric_progress_init(ext2_filsys fs,struct ext2fs_numeric_progress_struct * progress,const char * label,__u64 max)30 void ext2fs_numeric_progress_init(ext2_filsys fs,
31 struct ext2fs_numeric_progress_struct * progress,
32 const char *label, __u64 max)
33 {
34 /*
35 * The PRINT_PROGRESS flag turns on or off ALL
36 * progress-related messages, whereas the SKIP_PROGRESS
37 * environment variable prints the start and end messages but
38 * not the numeric countdown in the middle.
39 */
40 if (!(fs->flags & EXT2_FLAG_PRINT_PROGRESS))
41 return;
42
43 memset(spaces, ' ', sizeof(spaces)-1);
44 spaces[sizeof(spaces)-1] = 0;
45 memset(backspaces, '\b', sizeof(backspaces)-1);
46 backspaces[sizeof(backspaces)-1] = 0;
47
48 memset(progress, 0, sizeof(*progress));
49 if (getenv("E2FSPROGS_SKIP_PROGRESS"))
50 progress->skip_progress++;
51
52
53 /*
54 * Figure out how many digits we need
55 */
56 progress->max = max;
57 progress->log_max = int_log10(max);
58
59 if (label) {
60 fputs(label, stdout);
61 fflush(stdout);
62 }
63 last_update = 0;
64 }
65
ext2fs_numeric_progress_update(ext2_filsys fs,struct ext2fs_numeric_progress_struct * progress,__u64 val)66 void ext2fs_numeric_progress_update(ext2_filsys fs,
67 struct ext2fs_numeric_progress_struct * progress,
68 __u64 val)
69 {
70 time_t now;
71
72 if (!(fs->flags & EXT2_FLAG_PRINT_PROGRESS))
73 return;
74 if (progress->skip_progress)
75 return;
76 now = time(0);
77 if (now == last_update)
78 return;
79 last_update = now;
80
81 printf("%*llu/%*llu", progress->log_max, val,
82 progress->log_max, progress->max);
83 fprintf(stdout, "%.*s", (2*progress->log_max)+1, backspaces);
84 }
85
ext2fs_numeric_progress_close(ext2_filsys fs,struct ext2fs_numeric_progress_struct * progress,const char * message)86 void ext2fs_numeric_progress_close(ext2_filsys fs,
87 struct ext2fs_numeric_progress_struct * progress,
88 const char *message)
89 {
90 if (!(fs->flags & EXT2_FLAG_PRINT_PROGRESS))
91 return;
92 fprintf(stdout, "%.*s", (2*progress->log_max)+1, spaces);
93 fprintf(stdout, "%.*s", (2*progress->log_max)+1, backspaces);
94 if (message)
95 fputs(message, stdout);
96 }
97