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urls: initial support for detecting URLs and rendering jump-labels
The jump labels work, but is currently hardcoded to use xdg-open
This commit is contained in:
Daniel Eklöf
parent
b255aea3ed
commit
2cc84db979
12 changed files with 503 additions and 28 deletions
337
url-mode.c
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337
url-mode.c
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@ -0,0 +1,337 @@
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#include "url-mode.h"
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#include <string.h>
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#include <wctype.h>
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#define LOG_MODULE "url-mode"
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#define LOG_ENABLE_DBG 1
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#include "log.h"
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#include "grid.h"
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#include "spawn.h"
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#include "terminal.h"
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#include "util.h"
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#include "xmalloc.h"
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static bool
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execute_binding(struct seat *seat, struct terminal *term,
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enum bind_action_url action, uint32_t serial)
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{
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switch (action) {
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case BIND_ACTION_URL_NONE:
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return false;
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case BIND_ACTION_URL_CANCEL:
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urls_reset(term);
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return true;
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case BIND_ACTION_URL_COUNT:
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return false;
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}
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return true;
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}
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void
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urls_input(struct seat *seat, struct terminal *term, uint32_t key,
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xkb_keysym_t sym, xkb_mod_mask_t mods, uint32_t serial)
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{
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/* Key bindings */
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tll_foreach(seat->kbd.bindings.url, it) {
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if (it->item.bind.mods != mods)
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continue;
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/* Match symbol */
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if (it->item.bind.sym == sym) {
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execute_binding(seat, term, it->item.action, serial);
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return;
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}
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/* Match raw key code */
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tll_foreach(it->item.bind.key_codes, code) {
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if (code->item == key) {
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execute_binding(seat, term, it->item.action, serial);
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return;
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}
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}
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}
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wchar_t wc = xkb_state_key_get_utf32(seat->kbd.xkb_state, key);
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/*
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* Determine if this is a “valid” key. I.e. if there is an URL
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* label with a key combo where this key is the next in
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* sequence.
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*/
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size_t seq_len = wcslen(term->url_keys);
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bool is_valid = false;
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const struct url *match = NULL;
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tll_foreach(term->urls, it) {
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const struct url *url = &it->item;
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const size_t key_len = wcslen(it->item.key);
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if (key_len >= seq_len + 1 &&
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wcsncmp(url->key, term->url_keys, seq_len) == 0 &&
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url->key[seq_len] == wc)
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{
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is_valid = true;
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if (key_len == seq_len + 1) {
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match = url;
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break;
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}
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}
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}
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if (match) {
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size_t chars = wcstombs(NULL, match->url, 0);
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char url_utf8[chars + 1];
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wcstombs(url_utf8, match->url, chars);
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spawn(term->reaper, term->cwd, (char *const[]){"xdg-open", url_utf8, NULL}, -1, -1, -1);
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urls_reset(term);
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} else if (is_valid) {
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xassert(seq_len + 1 <= ALEN(term->url_keys));
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term->url_keys[seq_len] = wc;
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}
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}
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IGNORE_WARNING("-Wpedantic")
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static void
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auto_detected(struct terminal *term)
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{
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static const wchar_t *const prots[] = {
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L"http://",
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L"https://",
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};
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size_t max_prot_len = 0;
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for (size_t i = 0; i < ALEN(prots); i++) {
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size_t len = wcslen(prots[i]);
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if (len > max_prot_len)
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max_prot_len = len;
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}
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wchar_t proto_chars[max_prot_len];
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struct coord proto_start[max_prot_len];
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size_t proto_char_count = 0;
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enum {
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STATE_PROTOCOL,
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STATE_URL,
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} state = STATE_PROTOCOL;
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struct coord start = {-1, -1};
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wchar_t url[term->cols * term->rows + 1];
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size_t len = 0;
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for (int r = 0; r < term->rows; r++) {
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const struct row *row = grid_row_in_view(term->grid, r);
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for (int c = 0; c < term->cols; c++) {
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const struct cell *cell = &row->cells[c];
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wchar_t wc = towlower(cell->wc);
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switch (state) {
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case STATE_PROTOCOL:
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for (size_t i = 0; i < max_prot_len - 1; i++) {
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proto_chars[i] = proto_chars[i + 1];
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proto_start[i] = proto_start[i + 1];
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}
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if (proto_char_count == max_prot_len)
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proto_char_count--;
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proto_chars[proto_char_count] = wc;
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proto_start[proto_char_count] = (struct coord){c, r};
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proto_char_count++;
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for (size_t i = 0; i < ALEN(prots); i++) {
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size_t prot_len = wcslen(prots[i]);
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if (proto_char_count < prot_len)
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continue;
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const wchar_t *proto = &proto_chars[max_prot_len - prot_len];
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if (wcsncmp(prots[i], proto, prot_len) == 0) {
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state = STATE_URL;
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start = proto_start[max_prot_len - prot_len];
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wcsncpy(url, proto, prot_len);
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len = prot_len;
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break;
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}
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}
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break;
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case STATE_URL: {
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// static const wchar_t allowed[] =
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// L"abcdefghijklmnopqrstuvwxyz0123456789-._~:/?#[]@!$&'()*+,;=";
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// static const wchar_t unwise[] = L"{}|\\^[]`";
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// static const wchar_t reserved[] = L";/?:@&=+$,";
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switch (wc) {
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case L'a'...L'z':
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case L'0'...L'9':
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case L'-': case L'.': case L'_': case L'~': case L':':
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case L'/': case L'?': case L'#': case L'[': case L']':
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case L'@': case L'!': case L'$': case L'&': case L'\'':
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case L'(': case L')': case L'*': case L'+': case L',':
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case L';': case L'=': case L'"':
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url[len++] = wc;
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break;
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default: {
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/* Heuristic to remove trailing characters that
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* are valid URL characters, but typically not at
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* the end of the URL */
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bool done = false;
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struct coord end = {c, r};
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do {
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switch (url[len - 1]) {
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case L'.': case L',': case L':': case L';': case L'?':
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case L'!': case L'"': case L'\'':
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len--;
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end.col--;
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if (end.col < 0) {
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end.row--;
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end.col = term->cols - 1;
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}
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break;
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default:
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done = true;
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break;
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}
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} while (!done);
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url[len] = L'\0';
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tll_push_back(
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term->urls,
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((struct url){
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.url = xwcsdup(url),
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.text = xwcsdup(L""),
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.start = start,
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.end = end}));
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state = STATE_PROTOCOL;
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len = 0;
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break;
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}
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}
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break;
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}
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}
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}
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}
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}
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UNIGNORE_WARNINGS
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void
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urls_collect(struct terminal *term)
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{
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xassert(tll_length(term->urls) == 0);
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auto_detected(term);
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size_t count = tll_length(term->urls);
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/* Assign key combos */
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static const wchar_t *const single[] = {
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L"f", L"j", L"d", L"k", L"e", L"i", L"c", L"m", L"r",
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L"u", L"s", L"l", L"w", L"o", L"x", L"a", L"q", L"p",
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};
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if (count < ALEN(single)) {
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size_t idx = 0;
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tll_foreach(term->urls, it) {
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xassert(wcslen(single[idx]) < ALEN(it->item.key) - 1);
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wcscpy(it->item.key, single[idx++]);
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}
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} else {
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LOG_ERR("unimplemented: more URLs than %zu", ALEN(single));
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assert(false);
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}
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#if defined(_DEBUG) && LOG_ENABLE_DBG
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tll_foreach(term->urls, it) {
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char url[1024];
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wcstombs(url, it->item.url, sizeof(url) - 1);
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char key[32];
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wcstombs(key, it->item.key, sizeof(key) - 1);
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LOG_DBG("URL: %s (%s)", url, key);
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}
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#endif
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struct wl_window *win = term->window;
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struct wayland *wayl = term->wl;
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xassert(tll_length(win->urls) == 0);
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tll_foreach(win->term->urls, it) {
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struct wl_surface *surf = wl_compositor_create_surface(wayl->compositor);
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wl_surface_set_user_data(surf, win);
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struct wl_subsurface *sub_surf = NULL;
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if (surf != NULL) {
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sub_surf = wl_subcompositor_get_subsurface(
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wayl->sub_compositor, surf, win->surface);
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if (sub_surf != NULL)
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wl_subsurface_set_sync(sub_surf);
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}
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if (surf == NULL || sub_surf == NULL) {
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LOG_WARN("failed to create URL (sub)-surface");
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if (surf != NULL) {
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wl_surface_destroy(surf);
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surf = NULL;
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}
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if (sub_surf != NULL) {
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wl_subsurface_destroy(sub_surf);
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sub_surf = NULL;
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}
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}
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struct wl_url url = {
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.url = &it->item,
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.surf = surf,
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.sub_surf = sub_surf,
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};
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tll_push_back(win->urls, url);
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}
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}
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void
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urls_reset(struct terminal *term)
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{
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if (term->window != NULL) {
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tll_foreach(term->window->urls, it) {
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if (it->item.sub_surf != NULL)
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wl_subsurface_destroy(it->item.sub_surf);
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if (it->item.surf != NULL)
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wl_surface_destroy(it->item.surf);
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}
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tll_free(term->window->urls);
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}
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tll_foreach(term->urls, it) {
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free(it->item.url);
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free(it->item.text);
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}
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tll_free(term->urls);
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memset(term->url_keys, 0, sizeof(term->url_keys));
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}
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