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libsysprof-analyze: decompress if necessary in dup_bytes()

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If we are trying to get the file bytes and they are compressed, we may need
to transparently decompress those bytes. That way if the API requested
"/proc/cpuinfo" but really got "/proc/cpuinfo.gz" it still gets the same
bytes to consume.
This commit is contained in:
Christian Hergert
2023-05-30 13:19:57 -07:00
parent 1e8e1adb73
commit 957cec9843
1 changed files with 17 additions and 0 deletions
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17
src/libsysprof-analyze/sysprof-document-file.c
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@ -157,6 +157,23 @@ sysprof_document_file_dup_bytes (SysprofDocumentFile *self)
len = ar->len;
if (self->compressed)
{
guint8 *data = (guint8 *)g_array_free (ar, FALSE);
g_autoptr(GInputStream) input = g_memory_input_stream_new_from_data (data, len, g_free);
g_autoptr(GOutputStream) memory_output = g_memory_output_stream_new_resizable ();
g_autoptr(GZlibDecompressor) zlib = g_zlib_decompressor_new (G_ZLIB_COMPRESSOR_FORMAT_GZIP);
g_autoptr(GOutputStream) zlib_output = g_converter_output_stream_new (memory_output, G_CONVERTER (zlib));
g_output_stream_splice (zlib_output,
input,
(G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE |
G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET),
NULL, NULL);
return g_memory_output_stream_steal_as_bytes (G_MEMORY_OUTPUT_STREAM (memory_output));
}
return g_bytes_new_take (g_array_free (ar, FALSE), len);
}