summaryrefslogtreecommitdiff
path: root/sfeed_gph.c
blob: 34c4ac28ba2de324bdd0a82e67726b8491dce158 (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
152
#include <sys/stat.h>
#include <sys/types.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>

#include "util.h"

static struct feed f;
static char *prefixpath;
static char *line;
static size_t linesize;
static time_t comparetime;

/* Escape characters in links in geomyidae .gph format */
void
gphlink(FILE *fp, const char *s, size_t len)
{
	size_t i;

	for (i = 0; *s && i < len; s++, i++) {
		switch (*s) {
		case '\r': /* ignore CR */
		case '\n': /* ignore LF */
			break;
		case '\t':
			fputs("        ", fp);
			break;
		case '|': /* escape separators */
			fputs("\\|", fp);
			break;
		default:
			fputc(*s, fp);
			break;
		}
	}
}

static void
printfeed(FILE *fpitems, FILE *fpin, struct feed *f)
{
	char *fields[FieldLast];
	ssize_t linelen;
	unsigned int isnew;
	struct tm *tm;
	time_t parsedtime;

	if (f->name[0])
		fprintf(fpitems, "t%s\n\n", f->name);

	while ((linelen = getline(&line, &linesize, fpin)) > 0) {
		if (line[linelen - 1] == '\n')
			line[--linelen] = '\0';
		if (!parseline(line, fields))
			break;

		parsedtime = 0;
		if (strtotime(fields[FieldUnixTimestamp], &parsedtime))
			continue;
		if (!(tm = localtime(&parsedtime)))
			err(1, "localtime");

		isnew = (parsedtime >= comparetime) ? 1 : 0;
		f->totalnew += isnew;
		f->total++;

		if (fields[FieldLink][0]) {
			fputs("[h|", fpitems);
			fprintf(fpitems, "%c %04d-%02d-%02d %02d:%02d ",
			        isnew ? 'N' : ' ',
			        tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
			        tm->tm_hour, tm->tm_min);
			gphlink(fpitems, fields[FieldTitle], strlen(fields[FieldTitle]));
			fputs("|URL:", fpitems);
			gphlink(fpitems, fields[FieldLink], strlen(fields[FieldLink]));
			fputs("|server|port]\n", fpitems);
		} else {
			fprintf(fpitems, "%c %04d-%02d-%02d %02d:%02d %s\n",
			        isnew ? 'N' : ' ',
			        tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
			        tm->tm_hour, tm->tm_min, fields[FieldTitle]);
		}
	}
}

int
main(int argc, char *argv[])
{
	FILE *fpitems, *fpindex, *fp;
	char *name, path[PATH_MAX + 1];
	int i, r;

	if (pledge(argc == 1 ? "stdio" : "stdio rpath wpath cpath", NULL) == -1)
		err(1, "pledge");

	if ((comparetime = time(NULL)) == -1)
		err(1, "time");
	/* 1 day is old news */
	comparetime -= 86400;

	if (argc == 1) {
		f.name = "";
		printfeed(stdout, stdin, &f);
	} else {
		if (!(prefixpath = getenv("SFEED_GPH_PATH")))
			prefixpath = "/";

		/* write main index page */
		if (!(fpindex = fopen("index.gph", "wb")))
			err(1, "fopen: index.gph");

		for (i = 1; i < argc; i++) {
			memset(&f, 0, sizeof(f));
			name = ((name = strrchr(argv[i], '/'))) ? name + 1 : argv[i];
			f.name = name;

			if (!(fp = fopen(argv[i], "r")))
				err(1, "fopen: %s", argv[i]);

			r = snprintf(path, sizeof(path), "%s.gph", name);
			if (r < 0 || (size_t)r >= sizeof(path))
				errx(1, "path truncation: %s", path);
			if (!(fpitems = fopen(path, "wb")))
				err(1, "fopen");
			printfeed(fpitems, fp, &f);
			if (ferror(fp))
				err(1, "ferror: %s", argv[i]);
			fclose(fp);
			fclose(fpitems);

			/* append directory item to index */
			fprintf(fpindex, "[1|");
			gphlink(fpindex, name, strlen(name));
			fprintf(fpindex, " (%lu/%lu)|", f.totalnew, f.total);
			gphlink(fpindex, prefixpath, strlen(prefixpath));
			gphlink(fpindex, path, strlen(path));
			fputs("|server|port]\n", fpindex);
		}
		fclose(fpindex);
	}

	return 0;
}