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/* Copyright (C) 2018 Curtis McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <err.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include "chat.h"
static const char *SCHEMES[] = {
"https:",
"http:",
"ftp:",
};
static const size_t SCHEMES_LEN = sizeof(SCHEMES) / sizeof(SCHEMES[0]);
enum { RING_LEN = 16 };
static char *ring[RING_LEN];
static size_t last;
static_assert(!(RING_LEN & (RING_LEN - 1)), "power of two RING_LEN");
static void push(const char *url, size_t len) {
free(ring[last]);
ring[last++] = strndup(url, len);
last &= RING_LEN - 1;
}
void urlScan(const char *str) {
while (str[0]) {
size_t len = 1;
for (size_t i = 0; i < SCHEMES_LEN; ++i) {
if (strncmp(str, SCHEMES[i], strlen(SCHEMES[i]))) continue;
len = strcspn(str, " >\"");
push(str, len);
}
str = &str[len];
}
}
void urlList(void) {
uiHide();
for (size_t i = 0; i < RING_LEN; ++i) {
char *url = ring[(i + last) & (RING_LEN - 1)];
if (url) printf("%s\n", url);
}
}
void urlOpen(size_t i) {
char *url = ring[(last - i) & (RING_LEN - 1)];
if (!url) return;
int fd[2];
int error = pipe(fd);
if (error) err(EX_OSERR, "pipe");
pid_t pid = fork();
if (pid < 0) err(EX_OSERR, "fork");
if (!pid) {
close(STDIN_FILENO);
dup2(fd[1], STDOUT_FILENO);
dup2(fd[1], STDERR_FILENO);
execlp("open", "open", url, NULL);
perror("open");
exit(EX_CONFIG);
}
close(fd[1]);
// FIXME: This should technically go on the main event loop.
char buf[256];
ssize_t len = read(fd[0], buf, sizeof(buf) - 1);
if (len < 0) err(EX_IOERR, "read");
if (len) {
buf[len] = '\0';
len = strcspn(buf, "\n");
uiFmt("%.*s", (int)len, buf);
}
close(fd[0]);
}
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