fix simple plotting label - ploot - simple plotting tools
 (HTM) git clone git://bitreich.org/ploot git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/ploot
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       ---
 (DIR) commit f72c330d6fe40feff1b8295650056525a5905e15
 (DIR) parent fe139dc6e7dddb2211caedff45f9ba2a0ec47723
 (HTM) Author: Josuah Demangeon <mail@josuah.net>
       Date:   Wed,  7 Feb 2018 11:49:58 +0100
       
       fix simple plotting label
       
       Diffstat:
         M ploot.c                             |      23 +++++++++++++----------
       
       1 file changed, 13 insertions(+), 10 deletions(-)
       ---
 (DIR) diff --git a/ploot.c b/ploot.c
       @@ -56,7 +56,8 @@ humanize(char *str, double val)
                precision = (ABS(val) < 10) ? (3) : (ABS(val) < 100) ? (2) : (1);
                if (exp == 0)
                        precision++;
       -        sprintf(str, "%+.*f%c", precision, val, label[exp]);
       +        snprintf(str, 8, "%+.*f%c", precision, val, label[exp]);
       +        str[7] = '\0';
                if (val >= 0)
                        str[0] = ' ';
        }
       @@ -85,7 +86,7 @@ title(char *str, int width)
        {
                if (str == NULL)
                        return;
       -        printf("%*s\n", (int)(width + strlen(str)) / 2 + MARGIN, str);
       +        printf("%*s\n", (int)(width + strlen(str)) / 2 + MARGIN + 3, str);
        }
        
        /*
       @@ -95,7 +96,7 @@ title(char *str, int width)
        void
        vaxis(double val, int pos)
        {
       -        char        label[8];
       +        char        label[10];
        
                if (pos % 4 == 0) {
                        humanize(label, val);
       @@ -138,7 +139,7 @@ line(double *beg, double *end, double top, double bot)
         * If `str' is not NULL, it is set as a title above the graph.
         */
        void
       -plot(int height, double *beg, double *end, char *str)
       +plot(double *beg, double *end, int height, char *str)
        {
                double        top, bot, max;
                int        h;
       @@ -245,7 +246,7 @@ skip_gaps(time_t *tbeg, time_t *tend, double *vbuf, time_t step)
        void
        usage(void)
        {
       -        printf("usage: ploot [-h <height>] [-t <title>] -o <offset>\n");
       +        printf("usage: ploot [-h <height>] [-o <offset>] [-t <title>]\n");
                exit(1);
        }
        
       @@ -274,12 +275,14 @@ main(int argc, char **argv)
                                usage();
                        }
                }
       -        if (flag_o == 0)
       -                usage();
        
       -        tend = read_time_series(vbuf, tbuf);
       -        vend = skip_gaps(tbuf, tend, vbuf, flag_o);
       +        if (flag_o == 0) {
       +                vend = read_simple(vbuf);
       +        } else {
       +                tend = read_time_series(vbuf, tbuf);
       +                vend = skip_gaps(tbuf, tend, vbuf, flag_o);
       +        }
        
       -        plot(flag_h, vbuf, vend, flag_t);
       +        plot(vbuf, vend, flag_h, flag_t);
                return 0;
        }