[PATCH v2 04/19] convert: add conv_attrs classification
- From
Matheus Tavares <matheus.bernardino@usp.br>
- Date
- Sep 22, 2020, 22:49 UTC
- Message-ID
- <a1cf5df961dd493801ac374c3a3f3c38573a61d7.1600814153.git.matheus.bernardino@usp.br>
- In-Reply-To
- <cover.1600814153.git.matheus.bernardino@usp.br>
From: Jeff Hostetler <jeffhost@microsoft.com>
Create `enum conv_attrs_classification` to express the different ways that attributes are handled for a blob during checkout.
This will be used in a later commit when deciding whether to add a file to the parallel or delayed queue during checkout. For now, we can also use it in get_stream_filter_ca() to simplify the function (as the classifying logic is the same).
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> [matheus.bernardino: use classification in get_stream_filter_ca()] Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br> --- convert.c | 26 +++++++++++++++++++------- convert.h | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+), 7 deletions(-)
diff --git a/convert.c b/convert.c index c112ea23cb..633ad6976a 100644 --- a/convert.c +++ b/convert.c @@ -1972,13 +1972,7 @@ struct stream_filter *get_stream_filter_ca(const struct conv_attrs *ca, { struct stream_filter *filter = NULL; - if (ca->drv && (ca->drv->process || ca->drv->smudge || ca->drv->clean)) - return NULL; - - if (ca->working_tree_encoding) - return NULL; - - if (ca->crlf_action == CRLF_AUTO || ca->crlf_action == CRLF_AUTO_CRLF) + if (classify_conv_attrs(ca) != CA_CLASS_STREAMABLE) return NULL; if (ca->ident) @@ -2034,3 +2028,21 @@ void clone_checkout_metadata(struct checkout_metadata *dst, if (blob) oidcpy(&dst->blob, blob); } + +enum conv_attrs_classification classify_conv_attrs(const struct conv_attrs *ca) +{ + if (ca->drv) { + if (ca->drv->process) + return CA_CLASS_INCORE_PROCESS; + if (ca->drv->smudge || ca->drv->clean) + return CA_CLASS_INCORE_FILTER; + } + + if (ca->working_tree_encoding) + return CA_CLASS_INCORE; + + if (ca->crlf_action == CRLF_AUTO || ca->crlf_action == CRLF_AUTO_CRLF) + return CA_CLASS_INCORE; + + return CA_CLASS_STREAMABLE; +} diff --git a/convert.h b/convert.h index 262c1a1d46..523ba9b140 100644 --- a/convert.h +++ b/convert.h @@ -190,4 +190,37 @@ int stream_filter(struct stream_filter *, const char *input, size_t *isize_p, char *output, size_t *osize_p); +enum conv_attrs_classification { + /* + * The blob must be loaded into a buffer before it can be + * smudged. All smudging is done in-proc. + */ + CA_CLASS_INCORE, + + /* + * The blob must be loaded into a buffer, but uses a + * single-file driver filter, such as rot13. + */ + CA_CLASS_INCORE_FILTER, + + /* + * The blob must be loaded into a buffer, but uses a + * long-running driver process, such as LFS. This might or + * might not use delayed operations. (The important thing is + * that there is a single subordinate long-running process + * handling all associated blobs and in case of delayed + * operations, may hold per-blob state.) + */ + CA_CLASS_INCORE_PROCESS, + + /* + * The blob can be streamed and smudged without needing to + * completely read it into a buffer. + */ + CA_CLASS_STREAMABLE, +}; + +enum conv_attrs_classification classify_conv_attrs( + const struct conv_attrs *ca); + #endif /* CONVERT_H */
-- 2.28.0