i18n: make warn_dangling_symref() automatically append \n
[gitweb.git] / streaming.c
index 91414f459231a83e6d22ee5a91bd0f6bc65ff5b0..7e7ee2be6fe147ff660f8ab25618fbe4d4d0f11c 100644 (file)
@@ -66,7 +66,7 @@ struct filtered_istream {
 struct git_istream {
        const struct stream_vtbl *vtbl;
        unsigned long size; /* inflated size of full object */
-       z_stream z;
+       git_zstream z;
        enum { z_unused, z_used, z_done, z_error } z_state;
 
        union {
@@ -94,7 +94,9 @@ struct git_istream {
 
 int close_istream(struct git_istream *st)
 {
-       return st->vtbl->close(st);
+       int r = st->vtbl->close(st);
+       free(st);
+       return r;
 }
 
 ssize_t read_istream(struct git_istream *st, char *buf, size_t sz)
@@ -487,3 +489,58 @@ static open_method_decl(incore)
 
        return st->u.incore.buf ? 0 : -1;
 }
+
+
+/****************************************************************
+ * Users of streaming interface
+ ****************************************************************/
+
+int stream_blob_to_fd(int fd, unsigned const char *sha1, struct stream_filter *filter,
+                     int can_seek)
+{
+       struct git_istream *st;
+       enum object_type type;
+       unsigned long sz;
+       ssize_t kept = 0;
+       int result = -1;
+
+       st = open_istream(sha1, &type, &sz, filter);
+       if (!st)
+               return result;
+       if (type != OBJ_BLOB)
+               goto close_and_exit;
+       for (;;) {
+               char buf[1024 * 16];
+               ssize_t wrote, holeto;
+               ssize_t readlen = read_istream(st, buf, sizeof(buf));
+
+               if (!readlen)
+                       break;
+               if (can_seek && sizeof(buf) == readlen) {
+                       for (holeto = 0; holeto < readlen; holeto++)
+                               if (buf[holeto])
+                                       break;
+                       if (readlen == holeto) {
+                               kept += holeto;
+                               continue;
+                       }
+               }
+
+               if (kept && lseek(fd, kept, SEEK_CUR) == (off_t) -1)
+                       goto close_and_exit;
+               else
+                       kept = 0;
+               wrote = write_in_full(fd, buf, readlen);
+
+               if (wrote != readlen)
+                       goto close_and_exit;
+       }
+       if (kept && (lseek(fd, kept - 1, SEEK_CUR) == (off_t) -1 ||
+                    write(fd, "", 1) != 1))
+               goto close_and_exit;
+       result = 0;
+
+ close_and_exit:
+       close_istream(st);
+       return result;
+}