Introduce ALPM_BUFFER_SIZE constant

This takes the place of three previously used constants:
ARCHIVE_DEFAULT_BYTES_PER_BLOCK, BUFFER_SIZE, and CPBUFSIZE.

In libarchive 3.0, the first constant will be no more, so we can ensure
we are forward-compatible by removing our usage of it now. The rest are
unified for consistency.

By default, we will use the value of BUFSIZ provided by <stdio.h>, which
is 8192 on Linux. If that is undefined, a default value is provided.

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/libalpm/be_package.c b/lib/libalpm/be_package.c
index c8e08e22..4d9d0e82 100644
--- a/lib/libalpm/be_package.c
+++ b/lib/libalpm/be_package.c
@@ -59,7 +59,7 @@ static void *_package_changelog_open(alpm_pkg_t *pkg)
 	archive_read_support_format_all(archive);
 
 	if(archive_read_open_filename(archive, pkgfile,
-				ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) {
+				ALPM_BUFFER_SIZE) != ARCHIVE_OK) {
 		RET_ERR(pkg->handle, ALPM_ERR_PKG_OPEN, NULL);
 	}
 
@@ -390,7 +390,7 @@ alpm_pkg_t *_alpm_pkg_load_internal(alpm_handle_t *handle,
 	archive_read_support_format_all(archive);
 
 	if(archive_read_open_filename(archive, pkgfile,
-				ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) {
+				ALPM_BUFFER_SIZE) != ARCHIVE_OK) {
 		alpm_pkg_free(newpkg);
 		RET_ERR(handle, ALPM_ERR_PKG_OPEN, NULL);
 	}