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#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <time.h>
#include <wchar.h>
#include "util.h"
/* print link; if link is relative use baseurl to make it absolute */
void
printlink(const char *link, const char *baseurl, FILE *fp)
{
const char *ebaseproto, *ebasedomain, *p;
int isrelative;
/* protocol part */
for(p = link; *p && (isalpha((int)*p) || isdigit((int)*p) ||
*p == '+' || *p == '-' || *p == '.'); p++);
/* relative link (baseurl is used). */
isrelative = strncmp(p, "://", strlen("://"));
if(isrelative) {
if((ebaseproto = strstr(baseurl, "://"))) {
ebaseproto += strlen("://");
fwrite(baseurl, 1, ebaseproto - baseurl, fp);
} else {
ebaseproto = baseurl;
if(*baseurl || (link[0] == '/' && link[1] == '/'))
fputs("http://", fp);
}
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, fp);
else
fputs(ebaseproto, stdout);
} else if((ebasedomain = strrchr(ebaseproto, '/'))) {
/* relative to baseurl and baseurl path. */
fwrite(ebaseproto, 1, ebasedomain - ebaseproto + 1, fp);
} else {
fputs(ebaseproto, fp);
if(*baseurl && *link)
fputc('/', fp);
}
}
fputs(link, fp);
}
/* read a field-separated line from 'fp',
* separated by a character 'separator',
* 'fields' is a list of pointer with a maximum size of 'maxfields'.
* 'line' buffer is allocated using malloc, 'size' will contain the
* allocated buffer size.
* returns: amount of fields read. */
unsigned int
parseline(char **line, size_t *size, char **fields,
unsigned int maxfields, int separator, FILE *fp)
{
unsigned int i = 0;
char *prev, *s;
if(getline(line, size, fp) > 0) {
for(prev = *line; (s = strchr(prev, separator)) && i <= maxfields; i++) {
*s = '\0';
fields[i] = prev;
prev = s + 1;
}
fields[i] = prev;
/* make non-parsed fields empty. */
for(i++; i < maxfields; i++)
fields[i] = "";
}
return i;
}
const char *
trimend(const char *s)
{
size_t len = strlen(s);
for(; len > 0 && isspace((int)s[len - 1]); len--)
;
return &s[len];
}
const char *
trimstart(const char *s)
{
for(; *s && isspace((int)*s); s++)
;
return s;
}
/* print feed name for id; spaces and tabs in string as "-"
* (spaces in anchors are not valid). */
void
printfeednameid(const char *s, FILE *fp)
{
const char *e;
s = trimstart(s);
e = trimend(s);
for(; *s && s != e; s++)
fputc(isspace((int)*s) ? '-' : tolower((int)*s), fp);
}
void
printhtmlencoded(const char *s, FILE *fp) {
for(; *s; s++) {
switch(*s) {
case '<': fputs("<", fp); break;
case '>': fputs(">", fp); break;
/* case '&': fputs("&", fp); break;*/
default:
fputc(*s, fp);
}
}
}
void
printutf8pad(FILE *fp, const char *s, size_t len, int pad)
{
wchar_t w;
size_t n = 0, i;
int r;
for(i = 0; *s && n < len; i++, s++) {
if(ISUTF8(*s)) {
if((r = mbtowc(&w, s, 4)) == -1)
break;
if((r = wcwidth(w)) == -1)
r = 1;
n += (size_t)r;
}
putc(*s, fp);
}
for(; n < len; n++)
putc(pad, fp);
}
int
strtotime(const char *s, time_t *t)
{
long l;
errno = 0;
l = strtol(s, NULL, 10);
if(errno != 0)
return -1;
*t = (time_t)l;
return 0;
}
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