summaryrefslogtreecommitdiff
path: root/src/hbar.c
blob: 64e91b791a1ff68e365c1d8bb2bd49b1dd5a8e5b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
/*
 * hbar
 *
 * create a horizontal progres bar across the screen
 */

#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdbool.h>
#include <getopt.h>

#include "colors.h"

#define DEFAULT_COLOR BLACK BG_WHITE 
#define DEFAULT_RESET WHITE BG_DEFAULT

#define SAVE_POS "\033[s"
#define LOAD_POS "\033[u"

static void human_format(int bytes, char *output) {
	char *suffix[] = {"B", "KB", "MB", "GB", "TB"};
	char length = sizeof(suffix) / sizeof(suffix[0]);

	int i = 0;
	double dblBytes = bytes;

	if (bytes > 1024) {
		for (i = 0; (bytes / 1024) > 0 && i<length-1; i++, bytes /= 1024)
			dblBytes = bytes / 1024.0;
	}

	sprintf(output, "%.0lf%s", dblBytes, suffix[i]);
}

int main (int argc, char **argv) {
    struct winsize w;
    ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
    int width = w.ws_col;

    char *text = "";
    char *unit = "";
    int total = 0;
    int completed = 0;
    int line = 0;
    bool terminate = false;
    bool human = false;

    char *color = DEFAULT_COLOR;
    char *reset = DEFAULT_RESET;
 
    int opt;
    int option_index = 0;

    const char *optstring = "T:u:c:r:l:th";
    static const struct option opts[] = {
        {"text", required_argument, 0, 'T'},
        {"unit", optional_argument, 0, 'u'},
        {"color", optional_argument, 0, 'c'},
        {"reset", optional_argument, 0, 'r'},
        {"line", optional_argument, 0, 'l'},
        {"terminate", no_argument, 0, 't'},
        {"human-readable", no_argument, 0, 'h'}
    };

    while ((opt = getopt_long(argc, argv, optstring, opts, &option_index)) != -1) {
        switch (opt) {
            case 'T':
                text = optarg;
                break;
            case 'c':
                color = optarg;
                break;
            case 'r':
                reset = optarg;
                break;
            case 'u':
                unit = optarg;
                break;
            case 't':
                terminate = true;
                break;
            case 'h':
                human = true;
                break;
            case 'l':
                line = atoi(optarg);
                break;
        }
    }


    if (argc < optind + 2) {
        printf(RESET "\n");
        return 1;
    }

    completed = atoi(argv[optind]);
    total = atoi(argv[optind+1]);

    if (line != -1) {
        printf("\033[%dA", line, 0);
    }

    char *count = malloc(width);
    if (human) {
        // i suck at these
        char *c = malloc(width);
        char *t = malloc(width);
        human_format(completed, c);
        human_format(total, t);
        sprintf(count, "[%s%s/%s%s]", c, unit, t, unit);
    } else {
        sprintf(count, "[%d%s/%d%s]", completed, unit, total, unit);
    }

    printf(RESET "\r");
    printf(color);
    for (int i = 0; i <= width; i++) {
        int reset_at = 0;
        if (total > 0) {
            float percent = (float) completed / (float) total;
            reset_at = percent * width;
        }

        if (i == reset_at) {
            printf(reset);
        }

        if (text && i < strlen(text)) {
            printf("%c", text[i]);
        } else if (i + 1 > width - strlen(count)) {
            printf("%c", count[i - width + strlen(count)]);
        } else {
            printf(" ");
        }
    }

    if (line != -1) {
        printf("\033[%dB", line);
    }
    if (terminate) {
        printf(RESET "\n");
    }


    return 0;
}