1 /*
2 * sim_progress.c --- simple progress meter
3 *
4 * Copyright (C) 1997, 1998 by Theodore Ts'o and
5 * PowerQuest, Inc.
6 *
7 * Copyright (C) 1999, 2000 by Theosore Ts'o
8 *
9 * %Begin-Header%
10 * This file may be redistributed under the terms of the GNU Public
11 * License.
12 * %End-Header%
13 */
14
15 #include "resize2fs.h"
16
17 struct ext2_sim_progress {
18 FILE *f;
19 char *label;
20 int labelwidth;
21 int barwidth;
22 __u32 maxdone;
23 __u32 current;
24 int shown;
25 int flags;
26 };
27
ext2fs_progress_display(ext2_sim_progmeter prog)28 static errcode_t ext2fs_progress_display(ext2_sim_progmeter prog)
29 {
30 int i, width;
31
32 fputs(prog->label, prog->f);
33 width = prog->labelwidth - strlen(prog->label);
34 while (width-- > 0)
35 putc(' ', prog->f);
36 if (prog->labelwidth + prog->barwidth > 80) {
37 fputs("\n", prog->f);
38 for (width = prog->labelwidth; width > 0; width--)
39 putc(' ', prog->f);
40 }
41 for (i=0; i < prog->barwidth; i++)
42 putc('-', prog->f);
43 for (i=0; i < prog->barwidth; i++)
44 putc('\b', prog->f);
45 fflush(prog->f);
46 return 0;
47 }
48
49
ext2fs_progress_update(ext2_sim_progmeter prog,__u32 current)50 void ext2fs_progress_update(ext2_sim_progmeter prog, __u32 current)
51 {
52 int old_level, level, num, i;
53
54 level = prog->barwidth * current / prog->maxdone;
55 old_level = prog->barwidth * prog->current / prog->maxdone;
56 prog->current = current;
57
58 num = level - old_level;
59 if (num == 0)
60 return;
61
62 if (num > 0) {
63 for (i=0; i < num; i++)
64 putc('X', prog->f);
65 } else {
66 num = -num;
67 for (i=0; i < num; i++)
68 putc('\b', prog->f);
69 for (i=0; i < num; i++)
70 putc('-', prog->f);
71 for (i=0; i < num; i++)
72 putc('\b', prog->f);
73 }
74 fflush(prog->f);
75 }
76
ext2fs_progress_init(ext2_sim_progmeter * ret_prog,const char * label,int labelwidth,int barwidth,__u32 maxdone,int flags)77 errcode_t ext2fs_progress_init(ext2_sim_progmeter *ret_prog,
78 const char *label,
79 int labelwidth, int barwidth,
80 __u32 maxdone, int flags)
81 {
82 ext2_sim_progmeter prog;
83 errcode_t retval;
84
85 retval = ext2fs_get_mem(sizeof(struct ext2_sim_progress), &prog);
86 if (!prog)
87 return retval;
88 memset(prog, 0, sizeof(struct ext2_sim_progress));
89
90 retval = ext2fs_get_mem(strlen(label)+1, &prog->label);
91 if (retval) {
92 free(prog);
93 return retval;
94 }
95 strcpy(prog->label, label);
96 prog->labelwidth = labelwidth;
97 prog->barwidth = barwidth;
98 prog->flags = flags;
99 prog->maxdone = maxdone;
100 prog->current = 0;
101 prog->shown = 0;
102 prog->f = stdout;
103
104 *ret_prog = prog;
105
106 return ext2fs_progress_display(prog);
107 }
108
ext2fs_progress_close(ext2_sim_progmeter prog)109 void ext2fs_progress_close(ext2_sim_progmeter prog)
110 {
111
112 if (prog->label)
113 ext2fs_free_mem(&prog->label);
114 ext2fs_free_mem(&prog);
115 printf("\n");
116 return;
117 }
118