fix: avoid mime_content_type warning on wrapped streams#592
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mime_content_type() requires stream_cast() support to operate on a stream resource directly. Streams returned by File::fopen() can be wrapped in Icewind\Streams\CallbackWrapper, which does not implement stream_cast(), causing a PHP warning to be logged on every preview/output-file request even though the mime type is still detected correctly. This drains the stream into a temporary file first, then calls mime_content_type() against the file path instead. No behavior change; only removes log noise. Signed-off-by: Simon Holzman <simon.holzman@verizon.net>
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mime_content_type() requires stream_cast() support to operate on a stream resource directly. Streams returned by File::fopen() can be wrapped in Icewind\Streams\CallbackWrapper, which does not implement stream_cast(), causing a PHP warning to be logged on every preview/output-file request even though the mime type is still detected correctly.
This drains the stream into a temporary file first, then calls mime_content_type() against the file path instead. No behavior change; only removes log noise.
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