commit: use generations in paint_down_to_common()

diff --git a/streaming.c b/streaming.c
index c4d421d5990b03c9b510d4f8ae4e4a25c414a275..5892b50bd89c3c66bdb541ca0100f0671834a542 100644 (file)
--- a/streaming.c
+++ b/streaming.c
@@ -3,6 +3,7 @@
  */
 #include "cache.h"
 #include "streaming.h"
+#include "packfile.h"
 
 enum input_source {
        stream_error = -1,
@@ -99,7 +100,7 @@ int close_istream(struct git_istream *st)
        return r;
 }
 
-ssize_t read_istream(struct git_istream *st, char *buf, size_t sz)
+ssize_t read_istream(struct git_istream *st, void *buf, size_t sz)
 {
        return st->vtbl->read(st, buf, sz);
 }
@@ -111,17 +112,17 @@ static enum input_source istream_source(const unsigned char *sha1,
        unsigned long size;
        int status;
 
+       oi->typep = type;
        oi->sizep = &size;
-       status = sha1_object_info_extended(sha1, oi);
+       status = sha1_object_info_extended(sha1, oi, 0);
        if (status < 0)
                return stream_error;
-       *type = status;
 
        switch (oi->whence) {
        case OI_LOOSE:
                return loose;
        case OI_PACKED:
-               if (!oi->u.packed.is_delta && big_file_threshold <= size)
+               if (!oi->u.packed.is_delta && big_file_threshold < size)
                        return pack_non_delta;
                /* fallthru */
        default:
@@ -135,7 +136,7 @@ struct git_istream *open_istream(const unsigned char *sha1,
                                 struct stream_filter *filter)
 {
        struct git_istream *st;
-       struct object_info oi;
+       struct object_info oi = OBJECT_INFO_INIT;
        const unsigned char *real = lookup_replace_object(sha1);
        enum input_source src = istream_source(real, type, &oi);
 
@@ -149,11 +150,13 @@ struct git_istream *open_istream(const unsigned char *sha1,
                        return NULL;
                }
        }
-       if (st && filter) {
+       if (filter) {
                /* Add "&& !is_null_stream_filter(filter)" for performance */
                struct git_istream *nst = attach_stream_filter(st, filter);
-               if (!nst)
+               if (!nst) {
                        close_istream(st);
+                       return NULL;
+               }
                st = nst;
        }
 
@@ -237,7 +240,7 @@ static read_method_decl(filtered)
                if (!fs->input_finished) {
                        fs->i_end = read_istream(fs->upstream, fs->ibuf, FILTER_BUFFER);
                        if (fs->i_end < 0)
-                               break;
+                               return -1;
                        if (fs->i_end)
                                continue;
                }
@@ -309,7 +312,7 @@ static read_method_decl(loose)
                        st->z_state = z_done;
                        break;
                }
-               if (status != Z_OK && status != Z_BUF_ERROR) {
+               if (status != Z_OK && (status != Z_BUF_ERROR || total_read < sz)) {
                        git_inflate_end(&st->z);
                        st->z_state = z_error;
                        return -1;
@@ -335,17 +338,17 @@ static open_method_decl(loose)
        st->u.loose.mapped = map_sha1_file(sha1, &st->u.loose.mapsize);
        if (!st->u.loose.mapped)
                return -1;
-       if (unpack_sha1_header(&st->z,
-                              st->u.loose.mapped,
-                              st->u.loose.mapsize,
-                              st->u.loose.hdr,
-                              sizeof(st->u.loose.hdr)) < 0) {
+       if ((unpack_sha1_header(&st->z,
+                               st->u.loose.mapped,
+                               st->u.loose.mapsize,
+                               st->u.loose.hdr,
+                               sizeof(st->u.loose.hdr)) < 0) ||
+           (parse_sha1_header(st->u.loose.hdr, &st->size) < 0)) {
                git_inflate_end(&st->z);
                munmap(st->u.loose.mapped, st->u.loose.mapsize);
                return -1;
        }
 
-       parse_sha1_header(st->u.loose.hdr, &st->size);
        st->u.loose.hdr_used = strlen(st->u.loose.hdr) + 1;
        st->u.loose.hdr_avail = st->z.total_out;
        st->z_state = z_used;
@@ -495,7 +498,7 @@ static open_method_decl(incore)
  * Users of streaming interface
  ****************************************************************/
 
-int stream_blob_to_fd(int fd, unsigned const char *sha1, struct stream_filter *filter,
+int stream_blob_to_fd(int fd, const struct object_id *oid, struct stream_filter *filter,
                      int can_seek)
 {
        struct git_istream *st;
@@ -504,7 +507,7 @@ int stream_blob_to_fd(int fd, unsigned const char *sha1, struct stream_filter *f
        ssize_t kept = 0;
        int result = -1;
 
-       st = open_istream(sha1, &type, &sz, filter);
+       st = open_istream(oid->hash, &type, &sz, filter);
        if (!st) {
                if (filter)
                        free_stream_filter(filter);
@@ -517,6 +520,8 @@ int stream_blob_to_fd(int fd, unsigned const char *sha1, struct stream_filter *f
                ssize_t wrote, holeto;
                ssize_t readlen = read_istream(st, buf, sizeof(buf));
 
+               if (readlen < 0)
+                       goto close_and_exit;
                if (!readlen)
                        break;
                if (can_seek && sizeof(buf) == readlen) {
@@ -535,11 +540,11 @@ int stream_blob_to_fd(int fd, unsigned const char *sha1, struct stream_filter *f
                        kept = 0;
                wrote = write_in_full(fd, buf, readlen);
 
-               if (wrote != readlen)
+               if (wrote < 0)
                        goto close_and_exit;
        }
        if (kept && (lseek(fd, kept - 1, SEEK_CUR) == (off_t) -1 ||
-                    write(fd, "", 1) != 1))
+                    xwrite(fd, "", 1) != 1))
                goto close_and_exit;
        result = 0;