diff options
Diffstat (limited to 'srt2vtt/webvtt.scm')
-rw-r--r-- | srt2vtt/webvtt.scm | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/srt2vtt/webvtt.scm b/srt2vtt/webvtt.scm new file mode 100644 index 0000000..f4cd91b --- /dev/null +++ b/srt2vtt/webvtt.scm @@ -0,0 +1,45 @@ +;;; srt2vtt --- SRT to WebVTT converter +;;; Copyright © 2015 David Thompson <davet@gnu.org> +;;; +;;; srt2vtt is free software; you can redistribute it and/or modify it +;;; under the terms of the GNU General Public License as published by +;;; the Free Software Foundation; either version 3 of the License, or +;;; (at your option) any later version. +;;; +;;; srt2vtt 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 srt2vtt. If not, see <http://www.gnu.org/licenses/>. + +(define-module (srt2vtt webvtt) + #:use-module (ice-9 format) + #:use-module (ice-9 match) + #:use-module (srfi srfi-1) + #:use-module (srfi srfi-26) + #:use-module (srt2vtt) + #:export (write-webvtt + write-webvtts)) + +(define (write-time time port) + "Write TIME as a WebVTT formatted timestamp to PORT." + (match time + ((h m s ms) + (format port "~a:~a:~a.~a" h m s ms)))) + +(define (write-webvtt subtitle port) + "Write SUBTITLE as a WebVTT formatted subtitle to PORT." + (format port "~a~%" (subtitle-id subtitle)) + (write-time (subtitle-start subtitle) port) + (display " --> " port) + (write-time (subtitle-end subtitle) port) + (newline port) + (format port "~a~%" (string-join (subtitle-text subtitle) "\n")) + (newline port)) + +(define (write-webvtts subtitles port) + "Write all SUBTITLES as WebVTT formatted subtitles to PORT." + (format port "WEBVTT~%~%") + (for-each (cut write-webvtt <> port) subtitles)) |