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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
#include <bsd/stdio.h>
#include <bsd/stdlib.h>
#include <cairo.h>
#include <cairo-pdf.h>
#include <csv.h>
#include <errno.h>
#include <kplot.h>
#include <math.h>
#include <string.h>
#include <unistd.h>
void
usage(char *argv0) {
fprintf(stderr, "usage: %s [-HTwoh] [-O|-X] [file.csv]\n", argv0);
fprintf(stderr, " -H treat first line as header\n");
fprintf(stderr, " -T format output format (options \"png\", \"pdf\")"
" (default: \"pdf\")\n");
fprintf(stderr, " -o outfile output filename\n");
fprintf(stderr, " -w width\n");
fprintf(stderr, " -h height\n");
fprintf(stderr, " -O data markers are circles\n");
fprintf(stderr, " -X data markers are crosses\n");
}
int
main(int argc, char **argv) {
int ch, flag_H, flag_o, output_type, width, height, w, h, point_type;
char *outfile;
flag_H = flag_o = 0;
width = 600;
height = 400;
point_type = KPLOT_POINTS;
enum {
OUT_PNG,
OUT_PDF
};
output_type = OUT_PDF;
outfile = "out.pdf";
while ((ch = getopt(argc, argv, "HT:o:w:h:OX")) != -1) {
switch (ch) {
case 'H':
flag_H = 1;
break;
case 'T':
if (strncmp("png", optarg, 3) == 0) {
output_type = OUT_PNG;
if (flag_o == 0)
outfile = "out.png";
} else if (strncmp("pdf", optarg, 3) == 0)
output_type = OUT_PDF;
else
fprintf(stderr, "output format \"%s\" not recognised "
"(supported: \"png\", \"pdf\")\n", optarg);
break;
case 'o':
flag_o = 1;
outfile = optarg;
break;
case 'h':
h = atoi(optarg);
if (h <= 0) {
fprintf(stderr, "bad height \"%s\"\n", optarg);
return 1;
}
height = h;
break;
case 'w':
w = atoi(optarg);
if (w <= 0) {
fprintf(stderr, "bad width \"%s\"\n", optarg);
return 1;
}
width = w;
break;
case 'O':
point_type = KPLOT_POINTS;
break;
case 'X':
point_type = KPLOT_MARKS;
break;
case '?':
usage(*argv);
return 1;
}
}
FILE *f;
if (argc - optind == 0) {
f = stdin;
} else {
argv += optind;
f = fopen(*argv, "r");
if (f == NULL) {
perror(*argv);
return 1;
}
}
struct csv *c = csv_create();
if (csv_read_file(f, c, flag_H) != 0) {
perror("csv_read_file");
return 1;
}
if (c->cols > 2) {
fprintf(stderr, "warning: %d columns in file but only using first two\n", c->cols);
}
if (c->rows < 1) {
fprintf(stderr, "no rows found\n");
csv_destroy(c);
return 1;
}
int rows = c->rows;
struct kpair points1[c->rows];
for (int i = 0; i < c->rows; i++) {
if (c->cols == 1) {
points1[i].x = i;
points1[i].y = c->data[i][0];
} else {
points1[i].x = c->data[i][0];
points1[i].y = c->data[i][1];
}
}
char *xlabel, *ylabel;
if (flag_H) {
xlabel = c->headers[0];
ylabel = c->headers[1];
}
csv_destroy(c);
struct kdata *d1;
struct kplot *p;
struct kplotcfg kpcfg;
kplotcfg_defaults(&kpcfg);
if (flag_H) {
errno = 0;
kpcfg.xaxislabel = strdup(xlabel);
kpcfg.yaxislabel = strdup(ylabel);
if (errno != 0) {
perror("strdup");
return 1;
}
}
cairo_surface_t *surf;
cairo_t *cr;
d1 = kdata_array_alloc(points1, rows);
p = kplot_alloc(&kpcfg);
kplot_attach_data(p, d1, point_type, NULL);
kdata_destroy(d1);
if (output_type == OUT_PNG)
surf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
else
surf = cairo_pdf_surface_create(outfile, width, height);
cr = cairo_create(surf);
cairo_surface_destroy(surf);
kplot_draw(p, (double) width, (double) height, cr);
if (output_type == OUT_PNG)
cairo_surface_write_to_png(cairo_get_target(cr), outfile);
cairo_destroy(cr);
kplot_free(p);
return 0;
}
|
