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/*
* qtmaildir - a Qt6 mail client for notmuch-indexed Maildirs
* Copyright (C) 2026 Danilo M. <danix@danix.xyz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "querycompleter.h"
namespace {
/// Start of the token the cursor sits in. The boundary is whitespace or '(',
/// so "tag:inbox and su" has its last token starting at 14, not at 0.
int tokenStart(const QString &text, int cursor)
{
int start = cursor;
while (start > 0) {
const QChar c = text.at(start - 1);
if (c.isSpace() || c == QLatin1Char('('))
break;
--start;
}
return start;
}
} // namespace
CompletionContext completionContext(const QString &text, int cursor)
{
CompletionContext ctx;
if (cursor < 0 || cursor > text.size())
return ctx;
const int start = tokenStart(text, cursor);
const QString token = text.mid(start, cursor - start);
const int colon = token.indexOf(QLatin1Char(':'));
if (colon < 0) {
ctx.kind = CompletionContext::Prefix;
ctx.stem = token;
ctx.replaceFrom = start;
ctx.replaceLength = token.size();
return ctx;
}
ctx.kind = CompletionContext::Value;
ctx.prefix = token.left(colon).toLower();
ctx.stem = token.mid(colon + 1);
ctx.replaceFrom = start + colon + 1;
ctx.replaceLength = ctx.stem.size();
return ctx;
}
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