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#define _XOPEN_SOURCE 700
#include <fcntl.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
#include "blog.h"
static void insert_into(int blogdir, char *index_dir, const char *uri, const char *title)
{
char index_path[FILENAME_MAX] = { 0 };
snprintf(index_path, sizeof(index_path), "%s/index.html", index_dir);
char new_path[FILENAME_MAX] = { 0 };
snprintf(new_path, sizeof(new_path), "%s.new", index_path);
int new_index = openat(blogdir, new_path, O_WRONLY | O_CREAT, 0644);
dprintf(new_index, HTML_HEAD, "index");
dprintf(new_index, "<a href=\"/%s\">%s</a><br>", uri, title);
/* add old entries */
int old_index = openat(blogdir, index_path, O_RDONLY);
if (old_index != -1) {
struct stat st;
fstat(old_index, &st);
char *buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, old_index, 0);
if (buf != MAP_FAILED) {
char *a = strstr(buf, "<a");
char *add = strstr(a, "<address");
write(new_index, a, add - a);
munmap(buf, st.st_size);
}
close(old_index);
}
dprintf(new_index, HTML_TAIL, current_year());
close(new_index);
renameat(blogdir, new_path, blogdir, index_path);
}
void add_to_index(const char *path, const char *title)
{
int blogdir = open(DATA_DIRECTORY, O_DIRECTORY);
if (blogdir == -1) {
return;
}
char *dir = strdup(path);
if (dir == NULL) {
return;
}
char *day = dirname(dir);
insert_into(blogdir, day, path, title);
char *month = dirname(day);
insert_into(blogdir, month, path, title);
char *year = dirname(month);
insert_into(blogdir, year, path, title);
free(dir);
close(blogdir);
}
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