git-svn: Reduce temp file usage when dealing with non-links
Currently, in sub 'close_file', git-svn creates a temporary file and copies the contents of the blob to be written into it. This is useful for symlinks because svn stores symlinks in the form:
Git creates a blob only out of '$FILE_PATH' and uses file mode to indicate that the blob should be interpreted as a symlink.
As git-hash-object is invoked with --stdin-paths, a duplicate of the link from svn must be created that leaves off the first five bytes, i.e. 'link '. However, this is wholly unnecessary for normal blobs, though, as we already have a temp file with their contents. Copying the entire file gains nothing, and effectively requires a file to be written twice before making it into the object db.
This patch corrects that issue, holding onto the substr-like duplication for symlinks, but skipping it altogether for normal blobs by reusing the existing temp file.
Signed-off-by: Marcus Griep <firstname.lastname@example.org> Acked-by: Eric Wong <email@example.com>