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popup: UTF-8-aware SSID truncation

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%.*s cuts at byte index, splitting multi-byte sequences and producing
broken glyphs followed by the ellipsis. Walk codepoints instead and
truncate at a codepoint boundary.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
nemunaire 2026-04-29 12:48:03 +07:00
commit 92d4fbc5ff
1 changed files with 15 additions and 5 deletions
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20
src/e_mod_popup.c
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@ -231,13 +231,23 @@ _rebuild_list(Popup *p)
evas_object_size_hint_align_set(row, EVAS_HINT_FILL, 0);
Evas_Object *btn = elm_button_add(row);
/* Truncate long SSIDs so the row never forces horizontal scrolling. */
/* Truncate long SSIDs so the row never forces horizontal scrolling.
* Count codepoints, not bytes — SSIDs may contain UTF-8 and naive
* byte truncation would split a multi-byte sequence. */
const char *raw_ssid = n->ssid ? n->ssid : "(hidden)";
char ssid_buf[32];
const int max_ssid = 22;
if ((int)strlen(raw_ssid) > max_ssid)
char ssid_buf[64];
const int max_chars = 21;
int iindex = 0, prev = 0, chars = 0;
while (chars < max_chars
&& eina_unicode_utf8_next_get(raw_ssid, &iindex))
{ prev = iindex; chars++; }
if (eina_unicode_utf8_next_get(raw_ssid, &iindex))
{
snprintf(ssid_buf, sizeof(ssid_buf), "%.*s…", max_ssid - 1, raw_ssid);
/* more remains — truncate at `prev` and append U+2026 */
int copy = prev < (int)sizeof(ssid_buf) - 4
? prev : (int)sizeof(ssid_buf) - 4;
memcpy(ssid_buf, raw_ssid, copy);
memcpy(ssid_buf + copy, "\xe2\x80\xa6", 4); /* "…" + NUL */
raw_ssid = ssid_buf;
}
char label[256];