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#include <stdio.h>
#include <string.h>
#include <time.h>
#include "util.h"
static char *line;
static size_t linesize;
static int firstitem = 1;
/* Unescape / decode fields printed by string_print_encoded() */
static void
printcontent(const char *s)
{
for (; *s; s++) {
switch (*s) {
case '\\':
if (*(s + 1) == '\0')
break;
s++;
switch (*s) {
case 'n': fputs("\\n", stdout); break;
case '\\': fputs("\\\\", stdout); break;
case 't': fputs("\\t", stdout); break;
}
break; /* ignore invalid escape sequence */
case '"': fputs("\\\"", stdout); break;
default:
putchar(*s);
break;
}
}
}
static void
printfield(const char *s)
{
for (; *s; s++) {
if (*s == '\\')
fputs("\\\\", stdout);
else if (*s == '"')
fputs("\\\"", stdout);
else
putchar(*s);
}
}
static void
printfeed(FILE *fp, const char *feedname)
{
char *fields[FieldLast], timebuf[32];
struct tm parsedtm, *tm;
time_t parsedtime;
ssize_t linelen;
int ch;
char *p, *s;
while ((linelen = getline(&line, &linesize, fp)) > 0 &&
!ferror(stdout)) {
if (line[linelen - 1] == '\n')
line[--linelen] = '\0';
parseline(line, fields);
if (!firstitem)
fputs(",\n", stdout);
firstitem = 0;
fputs("{\n\t\"id\": \"", stdout);
printfield(fields[FieldId]);
fputs("\"", stdout);
parsedtime = 0;
if (!strtotime(fields[FieldUnixTimestamp], &parsedtime) &&
(tm = gmtime_r(&parsedtime, &parsedtm)) &&
strftime(timebuf, sizeof(timebuf), "%Y-%m-%dT%H:%M:%SZ", tm)) {
fputs(",\n\t\"date_published\": \"", stdout);
fputs(timebuf, stdout);
fputs("\"", stdout);
}
fputs(",\n\t\"title\": \"", stdout);
if (feedname[0]) {
fputs("[", stdout);
printfield(feedname);
fputs("] ", stdout);
}
printfield(fields[FieldTitle]);
fputs("\"", stdout);
if (fields[FieldLink][0]) {
fputs(",\n\t\"url\": \"", stdout);
printfield(fields[FieldLink]);
fputs("\"", stdout);
}
if (fields[FieldAuthor][0]) {
fputs(",\n\t\"authors\": [{\"name\": \"", stdout);
printfield(fields[FieldAuthor]);
fputs("\"}]", stdout);
}
if (fields[FieldCategory][0]) {
fputs(",\n\t\"tags\": [", stdout);
for (p = s = fields[FieldCategory]; ; s++) {
if (*s == '|' || *s == '\0') {
if (p != fields[FieldCategory])
fputs(", ", stdout);
ch = *s;
*s = '\0'; /* temporary NUL terminate */
fputs("\"", stdout);
printfield(p);
fputs("\"", stdout);
*s = ch; /* restore */
p = s + 1;
}
if (*s == '\0')
break;
}
fputs("]", stdout);
}
if (fields[FieldEnclosure][0]) {
fputs(",\n\t\"attachments\": [{\"url:\": \"", stdout);
printfield(fields[FieldEnclosure]);
fputs("\"}]", stdout);
}
if (!strcmp(fields[FieldContentType], "html"))
fputs(",\n\t\"content_html\": \"", stdout);
else
fputs(",\n\t\"content_text\": \"", stdout);
printcontent(fields[FieldContent]);
fputs("\"\n}", stdout);
}
}
int
main(int argc, char *argv[])
{
FILE *fp;
char *name;
int i;
if (pledge(argc == 1 ? "stdio" : "stdio rpath", NULL) == -1)
err(1, "pledge");
fputs("{\n"
"\"version\": \"https://jsonfeed.org/version/1.1\",\n"
"\"title\": \"Newsfeed\",\n"
"\"items\": [\n", stdout);
if (argc == 1) {
printfeed(stdin, "");
checkfileerror(stdin, "<stdin>", 'r');
} else {
for (i = 1; i < argc; i++) {
if (!(fp = fopen(argv[i], "r")))
err(1, "fopen: %s", argv[i]);
name = ((name = strrchr(argv[i], '/'))) ? name + 1 : argv[i];
printfeed(fp, name);
checkfileerror(fp, argv[i], 'r');
checkfileerror(stdout, "<stdout>", 'w');
fclose(fp);
}
}
fputs("]\n}\n", stdout);
checkfileerror(stdout, "<stdout>", 'w');
return 0;
}
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