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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 SchemesLen = sizeof(Schemes) / sizeof(Schemes[0]);
struct Entry {
size_t tag;
char *url;
};
enum { RingLen = 32 };
static_assert(!(RingLen & (RingLen - 1)), "power of two RingLen");
static struct {
struct Entry buf[RingLen];
size_t end;
} ring;
static void ringPush(struct Tag tag, const char *url, size_t len) {
free(ring.buf[ring.end].url);
ring.buf[ring.end].tag = tag.id;
ring.buf[ring.end].url = strndup(url, len);
if (!ring.buf[ring.end].url) err(EX_OSERR, "strndup");
ring.end = (ring.end + 1) & (RingLen - 1);
}
static struct Entry ringEntry(size_t i) {
return ring.buf[(ring.end + i) & (RingLen - 1)];
}
void urlScan(struct Tag tag, const char *str) {
while (str[0]) {
size_t len = 1;
for (size_t i = 0; i < SchemesLen; ++i) {
if (strncmp(str, Schemes[i], strlen(Schemes[i]))) continue;
len = strcspn(str, " >\"");
ringPush(tag, str, len);
}
str = &str[len];
}
}
void urlList(struct Tag tag) {
uiHide();
for (size_t i = 0; i < RingLen; ++i) {
struct Entry entry = ringEntry(i);
if (!entry.url || entry.tag != tag.id) continue;
printf("%s\n", entry.url);
}
}
void urlOpenMatch(struct Tag tag, const char *substr) {
for (size_t i = RingLen - 1; i < RingLen; --i) {
struct Entry entry = ringEntry(i);
if (!entry.url || entry.tag != tag.id) continue;
if (!strstr(entry.url, substr)) continue;
char *argv[] = { "open", entry.url, NULL };
eventPipe(argv);
break;
}
}
void urlOpenRange(struct Tag tag, size_t at, size_t to) {
size_t argc = 1;
char *argv[2 + RingLen] = { "open" };
size_t tagIndex = 0;
for (size_t i = RingLen - 1; i < RingLen; --i) {
struct Entry entry = ringEntry(i);
if (!entry.url || entry.tag != tag.id) continue;
if (tagIndex >= at && tagIndex < to) argv[argc++] = entry.url;
tagIndex++;
}
argv[argc] = NULL;
if (argc > 1) eventPipe(argv);
}
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