Merge branch 'mh/strbuf-split'
[gitweb.git] / builtin / pack-objects.c
index ccfcbad14647eff80131cd99c22a18f13016b4af..f069462cb03bbae46dae8d6b97420b3726690c47 100644 (file)
 #include "list-objects.h"
 #include "progress.h"
 #include "refs.h"
+#include "streaming.h"
 #include "thread-utils.h"
 
 static const char *pack_usage[] = {
-       "git pack-objects --stdout [options...] [< ref-list | < object-list]",
-       "git pack-objects [options...] base-name [< ref-list | < object-list]",
+       N_("git pack-objects --stdout [options...] [< ref-list | < object-list]"),
+       N_("git pack-objects [options...] base-name [< ref-list | < object-list]"),
        NULL
 };
 
@@ -150,6 +151,46 @@ static unsigned long do_compress(void **pptr, unsigned long size)
        return stream.total_out;
 }
 
+static unsigned long write_large_blob_data(struct git_istream *st, struct sha1file *f,
+                                          const unsigned char *sha1)
+{
+       git_zstream stream;
+       unsigned char ibuf[1024 * 16];
+       unsigned char obuf[1024 * 16];
+       unsigned long olen = 0;
+
+       memset(&stream, 0, sizeof(stream));
+       git_deflate_init(&stream, pack_compression_level);
+
+       for (;;) {
+               ssize_t readlen;
+               int zret = Z_OK;
+               readlen = read_istream(st, ibuf, sizeof(ibuf));
+               if (readlen == -1)
+                       die(_("unable to read %s"), sha1_to_hex(sha1));
+
+               stream.next_in = ibuf;
+               stream.avail_in = readlen;
+               while ((stream.avail_in || readlen == 0) &&
+                      (zret == Z_OK || zret == Z_BUF_ERROR)) {
+                       stream.next_out = obuf;
+                       stream.avail_out = sizeof(obuf);
+                       zret = git_deflate(&stream, readlen ? 0 : Z_FINISH);
+                       sha1write(f, obuf, stream.next_out - obuf);
+                       olen += stream.next_out - obuf;
+               }
+               if (stream.avail_in)
+                       die(_("deflate error (%d)"), zret);
+               if (readlen == 0) {
+                       if (zret != Z_STREAM_END)
+                               die(_("deflate error (%d)"), zret);
+                       break;
+               }
+       }
+       git_deflate_end(&stream);
+       return olen;
+}
+
 /*
  * we are going to reuse the existing object data as is.  make
  * sure it is not corrupt.
@@ -208,11 +249,18 @@ static unsigned long write_no_reuse_object(struct sha1file *f, struct object_ent
        unsigned hdrlen;
        enum object_type type;
        void *buf;
+       struct git_istream *st = NULL;
 
        if (!usable_delta) {
-               buf = read_sha1_file(entry->idx.sha1, &type, &size);
-               if (!buf)
-                       die("unable to read %s", sha1_to_hex(entry->idx.sha1));
+               if (entry->type == OBJ_BLOB &&
+                   entry->size > big_file_threshold &&
+                   (st = open_istream(entry->idx.sha1, &type, &size, NULL)) != NULL)
+                       buf = NULL;
+               else {
+                       buf = read_sha1_file(entry->idx.sha1, &type, &size);
+                       if (!buf)
+                               die(_("unable to read %s"), sha1_to_hex(entry->idx.sha1));
+               }
                /*
                 * make sure no cached delta data remains from a
                 * previous attempt before a pack split occurred.
@@ -233,7 +281,9 @@ static unsigned long write_no_reuse_object(struct sha1file *f, struct object_ent
                        OBJ_OFS_DELTA : OBJ_REF_DELTA;
        }
 
-       if (entry->z_delta_size)
+       if (st) /* large blob case, just assume we don't compress well */
+               datalen = size;
+       else if (entry->z_delta_size)
                datalen = entry->z_delta_size;
        else
                datalen = do_compress(&buf, size);
@@ -256,6 +306,8 @@ static unsigned long write_no_reuse_object(struct sha1file *f, struct object_ent
                while (ofs >>= 7)
                        dheader[--pos] = 128 | (--ofs & 127);
                if (limit && hdrlen + sizeof(dheader) - pos + datalen + 20 >= limit) {
+                       if (st)
+                               close_istream(st);
                        free(buf);
                        return 0;
                }
@@ -268,6 +320,8 @@ static unsigned long write_no_reuse_object(struct sha1file *f, struct object_ent
                 * an additional 20 bytes for the base sha1.
                 */
                if (limit && hdrlen + 20 + datalen + 20 >= limit) {
+                       if (st)
+                               close_istream(st);
                        free(buf);
                        return 0;
                }
@@ -276,13 +330,20 @@ static unsigned long write_no_reuse_object(struct sha1file *f, struct object_ent
                hdrlen += 20;
        } else {
                if (limit && hdrlen + datalen + 20 >= limit) {
+                       if (st)
+                               close_istream(st);
                        free(buf);
                        return 0;
                }
                sha1write(f, header, hdrlen);
        }
-       sha1write(f, buf, datalen);
-       free(buf);
+       if (st) {
+               datalen = write_large_blob_data(st, f, entry->idx.sha1);
+               close_istream(st);
+       } else {
+               sha1write(f, buf, datalen);
+               free(buf);
+       }
 
        return hdrlen + datalen;
 }
@@ -1972,7 +2033,6 @@ static int add_ref_tag(const char *path, const unsigned char *sha1, int flag, vo
 
        if (!prefixcmp(path, "refs/tags/") && /* is a tag? */
            !peel_ref(path, peeled)        && /* peelable? */
-           !is_null_sha1(peeled)          && /* annotated tag? */
            locate_object_entry(peeled))      /* object packed? */
                add_object_entry(sha1, OBJ_TAG, NULL, 0);
        return 0;
@@ -2312,7 +2372,7 @@ static void get_object_list(int ac, const char **av)
                        }
                        die("not a rev '%s'", line);
                }
-               if (handle_revision_arg(line, &revs, flags, 1))
+               if (handle_revision_arg(line, &revs, flags, REVARG_CANNOT_BE_FILENAME))
                        die("bad revision '%s'", line);
        }
 
@@ -2384,67 +2444,67 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
        int rev_list_unpacked = 0, rev_list_all = 0, rev_list_reflog = 0;
        struct option pack_objects_options[] = {
                OPT_SET_INT('q', "quiet", &progress,
-                           "do not show progress meter", 0),
+                           N_("do not show progress meter"), 0),
                OPT_SET_INT(0, "progress", &progress,
-                           "show progress meter", 1),
+                           N_("show progress meter"), 1),
                OPT_SET_INT(0, "all-progress", &progress,
-                           "show progress meter during object writing phase", 2),
+                           N_("show progress meter during object writing phase"), 2),
                OPT_BOOL(0, "all-progress-implied",
                         &all_progress_implied,
-                        "similar to --all-progress when progress meter is shown"),
-               { OPTION_CALLBACK, 0, "index-version", NULL, "version[,offset]",
-                 "write the pack index file in the specified idx format version",
+                        N_("similar to --all-progress when progress meter is shown")),
+               { OPTION_CALLBACK, 0, "index-version", NULL, N_("version[,offset]"),
+                 N_("write the pack index file in the specified idx format version"),
                  0, option_parse_index_version },
                OPT_ULONG(0, "max-pack-size", &pack_size_limit,
-                         "maximum size of each output pack file"),
+                         N_("maximum size of each output pack file")),
                OPT_BOOL(0, "local", &local,
-                        "ignore borrowed objects from alternate object store"),
+                        N_("ignore borrowed objects from alternate object store")),
                OPT_BOOL(0, "incremental", &incremental,
-                        "ignore packed objects"),
+                        N_("ignore packed objects")),
                OPT_INTEGER(0, "window", &window,
-                           "limit pack window by objects"),
+                           N_("limit pack window by objects")),
                OPT_ULONG(0, "window-memory", &window_memory_limit,
-                         "limit pack window by memory in addition to object limit"),
+                         N_("limit pack window by memory in addition to object limit")),
                OPT_INTEGER(0, "depth", &depth,
-                           "maximum length of delta chain allowed in the resulting pack"),
+                           N_("maximum length of delta chain allowed in the resulting pack")),
                OPT_BOOL(0, "reuse-delta", &reuse_delta,
-                        "reuse existing deltas"),
+                        N_("reuse existing deltas")),
                OPT_BOOL(0, "reuse-object", &reuse_object,
-                        "reuse existing objects"),
+                        N_("reuse existing objects")),
                OPT_BOOL(0, "delta-base-offset", &allow_ofs_delta,
-                        "use OFS_DELTA objects"),
+                        N_("use OFS_DELTA objects")),
                OPT_INTEGER(0, "threads", &delta_search_threads,
-                           "use threads when searching for best delta matches"),
+                           N_("use threads when searching for best delta matches")),
                OPT_BOOL(0, "non-empty", &non_empty,
-                        "do not create an empty pack output"),
+                        N_("do not create an empty pack output")),
                OPT_BOOL(0, "revs", &use_internal_rev_list,
-                        "read revision arguments from standard input"),
+                        N_("read revision arguments from standard input")),
                { OPTION_SET_INT, 0, "unpacked", &rev_list_unpacked, NULL,
-                 "limit the objects to those that are not yet packed",
+                 N_("limit the objects to those that are not yet packed"),
                  PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, 1 },
                { OPTION_SET_INT, 0, "all", &rev_list_all, NULL,
-                 "include objects reachable from any reference",
+                 N_("include objects reachable from any reference"),
                  PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, 1 },
                { OPTION_SET_INT, 0, "reflog", &rev_list_reflog, NULL,
-                 "include objects referred by reflog entries",
+                 N_("include objects referred by reflog entries"),
                  PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, 1 },
                OPT_BOOL(0, "stdout", &pack_to_stdout,
-                        "output pack to stdout"),
+                        N_("output pack to stdout")),
                OPT_BOOL(0, "include-tag", &include_tag,
-                        "include tag objects that refer to objects to be packed"),
+                        N_("include tag objects that refer to objects to be packed")),
                OPT_BOOL(0, "keep-unreachable", &keep_unreachable,
-                        "keep unreachable objects"),
-               { OPTION_CALLBACK, 0, "unpack-unreachable", NULL, "time",
-                 "unpack unreachable objects newer than <time>",
+                        N_("keep unreachable objects")),
+               { OPTION_CALLBACK, 0, "unpack-unreachable", NULL, N_("time"),
+                 N_("unpack unreachable objects newer than <time>"),
                  PARSE_OPT_OPTARG, option_parse_unpack_unreachable },
                OPT_BOOL(0, "thin", &thin,
-                        "create thin packs"),
+                        N_("create thin packs")),
                OPT_BOOL(0, "honor-pack-keep", &ignore_packed_keep,
-                        "ignore packs that have companion .keep file"),
+                        N_("ignore packs that have companion .keep file")),
                OPT_INTEGER(0, "compression", &pack_compression_level,
-                           "pack compression level"),
+                           N_("pack compression level")),
                OPT_SET_INT(0, "keep-true-parents", &grafts_replace_parents,
-                           "do not hide commits by grafts", 0),
+                           N_("do not hide commits by grafts"), 0),
                OPT_END(),
        };