87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/* Copyright (C) 2018 Curtis McEnroe <june@causal.agency>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <err.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include "chat.h"
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static const char *SCHEMES[] = {
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"https:",
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"http:",
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"ftp:",
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};
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static const size_t SCHEMES_LEN = sizeof(SCHEMES) / sizeof(SCHEMES[0]);
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struct Entry {
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size_t tag;
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char *url;
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};
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enum { RING_LEN = 32 };
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static_assert(!(RING_LEN & (RING_LEN - 1)), "power of two RING_LEN");
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static struct {
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struct Entry buf[RING_LEN];
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size_t end;
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} ring;
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static void push(struct Tag tag, const char *url, size_t len) {
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free(ring.buf[ring.end].url);
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ring.buf[ring.end].tag = tag.id;
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ring.buf[ring.end].url = strndup(url, len);
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if (!ring.buf[ring.end].url) err(EX_OSERR, "strndup");
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ring.end = (ring.end + 1) & (RING_LEN - 1);
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}
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void urlScan(struct Tag tag, const char *str) {
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while (str[0]) {
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size_t len = 1;
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for (size_t i = 0; i < SCHEMES_LEN; ++i) {
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if (strncmp(str, SCHEMES[i], strlen(SCHEMES[i]))) continue;
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len = strcspn(str, " >\"");
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push(tag, str, len);
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}
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str = &str[len];
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}
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}
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void urlList(struct Tag tag) {
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uiHide();
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for (size_t i = 0; i < RING_LEN; ++i) {
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struct Entry entry = ring.buf[(ring.end + i) & (RING_LEN - 1)];
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if (!entry.url || entry.tag != tag.id) continue;
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printf("%s\n", entry.url);
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}
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}
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void urlOpen(struct Tag tag, size_t at, size_t to) {
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size_t argc = 1;
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char *argv[2 + RING_LEN] = { "open" };
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size_t tagIndex = 0;
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for (size_t i = 0; i < RING_LEN; ++i) {
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struct Entry entry = ring.buf[(ring.end - i) & (RING_LEN - 1)];
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if (!entry.url || entry.tag != tag.id) continue;
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if (tagIndex >= at && tagIndex < to) argv[argc++] = entry.url;
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tagIndex++;
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}
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if (argc > 1) spawn(argv);
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}
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