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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <ctype.h>
enum { FieldUnixTimestamp = 0, FieldTimeFormatted, FieldTitle, FieldLink,
FieldContent, FieldContentType, FieldId, FieldAuthor, FieldFeedType,
FieldFeedName, FieldFeedUrl, FieldBaseSiteUrl, FieldLast };
const int FieldSeparator = '\t';
char *
afgets(char **p, size_t *size, FILE *fp) {
char buf[BUFSIZ], *alloc = NULL;
size_t n, len = 0, allocsiz;
int end = 0;
while(fgets(buf, sizeof(buf), fp)) {
n = strlen(buf);
if(buf[n - 1] == '\n') { /* dont store newlines. */
buf[n - 1] = '\0';
n--;
end = 1; /* newline found, end */
}
len += n;
allocsiz = len + 1;
if(allocsiz > *size) {
if((alloc = realloc(*p, allocsiz))) {
*p = alloc;
*size = allocsiz;
} else {
free(*p);
*p = NULL;
fputs("error: could not realloc\n", stderr);
exit(EXIT_FAILURE);
return NULL;
}
}
strncpy((*p + (len - n)), buf, n);
if(end || feof(fp))
break;
}
if(*p && len > 0) {
(*p)[len] = '\0';
return *p;
}
return NULL;
}
void /* print link; if link is relative use baseurl to make it absolute */
printlink(const char *link, const char *baseurl) {
const char *ebaseproto, *ebasedomain, *p;
int isrelative;
/* protocol part */
for(p = link; *p && (isalpha(*p) || isdigit(*p) || *p == '+' || *p == '-' || *p == '.'); p++);
isrelative = strncmp(p, "://", strlen("://"));
if(isrelative) { /* relative link (baseurl is used). */
if((ebaseproto = strstr(baseurl, "://"))) {
ebaseproto += strlen("://");
fwrite(baseurl, 1, ebaseproto - baseurl, stdout);
} else {
ebaseproto = baseurl;
if(*baseurl || (link[0] == '/' && link[1] == '/'))
fputs("http://", stdout);
}
if(link[0] == '/') { /* relative to baseurl domain (not path). */
if(link[1] == '/') /* absolute url but with protocol from baseurl. */
link += 2;
else if((ebasedomain = strchr(ebaseproto, '/'))) /* relative to baseurl and baseurl path. */
fwrite(ebaseproto, 1, ebasedomain - ebaseproto, stdout);
else
fputs(ebaseproto, stdout);
} else if((ebasedomain = strrchr(ebaseproto, '/'))) /* relative to baseurl and baseurl path. */
fwrite(ebaseproto, 1, ebasedomain - ebaseproto + 1, stdout);
else {
fputs(ebaseproto, stdout);
if(*baseurl && *link)
fputc('/', stdout);
}
}
fputs(link, stdout);
}
unsigned int
parseline(char **line, size_t *size, char **fields, unsigned int maxfields, FILE *fp, int separator) {
unsigned int i = 0;
char *prev, *s;
if(afgets(line, size, fp)) {
for(prev = *line; (s = strchr(prev, separator)) && i <= maxfields; i++) {
*s = '\0'; /* null terminate string. */
fields[i] = prev;
prev = s + 1;
}
fields[i] = prev;
for(i++; i < maxfields; i++) /* make non-parsed fields empty. */
fields[i] = "";
}
return i;
}
void
printtime(time_t t) {
char buf[32];
struct tm temp = { 0 }, *mktm;
if(!(mktm = localtime_r(&t, &temp)))
return;
mktm->tm_isdst = -1;
if(!strftime(buf, sizeof(buf) - 1, "%Y-%m-%d %H:%M", mktm))
return;
fputs(buf, stdout);
}
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