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added %datetime, %date, and %time expansions to ISO8601 datetimes #132

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added %datetime, %date, and %time expansions to ISO8601 datetimes #132

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6 changes: 6 additions & 0 deletions LabRecorder.cfg
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,12 @@
; %b for task label (same as block in Legacy), %a for name of acquisition parameter set, and %r index.
; The BIDS syntax is: path/to/StudyRoot/sub-%p/ses-%s/eeg/sub-%p_ses-%s_task-%b[_acq-%a]_run-%r_eeg.xdf
;

; Additionally, %datetime will insert an ISO8601 UTC datetime with milliseconds, the day's date
; only with %date, or the current time only with %time.
;; for example syntax is: path/to/StudyRoot/LabRecorder_%datetime_eeg.xdf
;

; If neither StorageLocation or StudyRoot is provided then the default root is QStandardPaths::DocumentsLocation/CurrentStudy/
; If neither StorageLocation or PathTemplate are provided, then the BIDS format is assumed, or the file template exp%n/block_%b.xdf if BIDS is unchecked.

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9 changes: 9 additions & 0 deletions src/mainwindow.cpp
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Expand Up @@ -564,6 +564,15 @@ QString MainWindow::replaceFilename(QString fullfile) const {
QString run = QString("%1").arg(ui->spin_counter->value(), 3, 10, QChar('0'));
fullfile.replace(counterPlaceholder(), run);

// ISO8601 UTC datetime with milliseconds
// Get current UTC once
QDateTime nowUtc = QDateTime::currentDateTimeUtc();
// Datetime replacements (filename-safe)
// QString datetime = QDateTime::currentDateTimeUtc().toString("yyyy-MM-ddTHH--mm--ss.zzzZ"); -- with double-hyphen convention as mentioned on wikipedia: https://en.wikipedia.org/wiki/ISO_8601
fullfile.replace("%datetime", nowUtc.toString("yyyy-MM-ddTHHmmss.zzzZ"));
fullfile.replace("%date", nowUtc.toString("yyyy-MM-dd"));
fullfile.replace("%time", nowUtc.toString("HHmmss.zzzZ"));

return fullfile.trimmed();
}

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