drewnoakes/metadata-extractor

Treat \0 as terminator in IPTC strings

Open

#122 创建于 2015年9月4日

在 GitHub 查看
 (1 评论) (0 反应) (0 负责人)Java (2,411 star) (470 fork)batch import
bugformat-iptcgood-first-issuehelp wantedimage-queue

描述

The below image, when passed through exiftool, reads the IPTC Source as "Getty Images North America".

When read with the IptcDirectory we're getting "Getty Images ����". On closer inspection it looks something more like: "Getty Images\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0003\u0000\u0000\u0000\u0005\u0000\u0000\u0000\n����".

The null character is often used to denote the end of a string - is this being respected? Or not as it's not part of the standard?

getty-borked

贡献者指南

技术栈
java
领域
databackend
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
needs investigation
前置要求
Java programmingunderstanding of null terminated stringsbasic knowledge of IPTC metadata
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
30
研究方向
Investigate how the IptcDirectory reads IPTC strings, particularly for null characters. Compare the behavior with exiftool to identify where the null handling differs. Review the relevant Java code in the metadata extractor repository, focusing on string parsing in IptcDirectory or related classes. Consider whether the null character should be treated as a terminator and if any standards specify this.