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[PATCH] XMPSchemaAdapter.java: Use UTC timezone when SOURCE_DATE_EPOCH is set. 

SOURCE_DATE_EPOCH specifies the timestamp, but needs to be rendered in
UTC timezone to ensure reproducible builds.

https://reproducible-builds.org/docs/source-date-epoch/

This is a follow-up to https://bugs.debian.org/978499 in apache fop,
as there is no way for fop itself to pass the timezone information for
some values.

Gbp-Pq: Name 0001-XMPSchemaAdapter.java-Use-UTC-timezone-when-SOURCE_D.patch
This commit is contained in:
Vagrant Cascadian 2021-02-26 19:10:10 +00:00 committed by zhouganqing
parent 92f7876cc1
commit b91e2d083d
1 changed files with 5 additions and 0 deletions
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src/main/java/org/apache/xmlgraphics/xmp/XMPSchemaAdapter.java
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@ -157,6 +157,11 @@ public class XMPSchemaAdapter {
* @return the formatted date * @return the formatted date
*/ */
public static String formatISO8601Date(Date dt) { public static String formatISO8601Date(Date dt) {
// https://reproducible-builds.org/docs/source-date-epoch/
String source_date_epoch = System.getenv("SOURCE_DATE_EPOCH");
if (source_date_epoch != null) {
return formatISO8601Date(dt, TimeZone.getTimeZone("Etc/UTC"));
}
return formatISO8601Date(dt, TimeZone.getDefault()); return formatISO8601Date(dt, TimeZone.getDefault());
} }