Merge branch 'jh/resize-convert-scratch-buffer'

When the "clean" filter can reduce the size of a huge file in the
working tree down to a small "token" (a la Git LFS), there is no
point in allocating a huge scratch area upfront, but the buffer is
sized based on the original file size.  The convert mechanism now
allocates very minimum and reallocates as it receives the output
from the clean filter process.

* jh/resize-convert-scratch-buffer:
convert: avoid malloc of original file size

diff --git a/convert.c b/convert.c
index 5d0307fc1004f215c48a6f653e21da41bee71baa..94ff8376492257782a1af5b3d2851ee8724c2edd 100644 (file)
--- a/convert.c
+++ b/convert.c
@@ -731,7 +731,7 @@ static int apply_single_file_filter(const char *path, const char *src, size_t le
        if (start_async(&async))
                return 0;       /* error was already reported */
 
-       if (strbuf_read(&nbuf, async.out, len) < 0) {
+       if (strbuf_read(&nbuf, async.out, 0) < 0) {
                err = error(_("read from external filter '%s' failed"), cmd);
        }
        if (close(async.out)) {