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Merge branch 'nd/shallow-deepen'

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The existing "git fetch --depth=<n>" option was hard to use
correctly when making the history of an existing shallow clone
deeper.  A new option, "--deepen=<n>", has been added to make this
easier to use.  "git clone" also learned "--shallow-since=<date>"
and "--shallow-exclude=<tag>" options to make it easier to specify
"I am interested only in the recent N months worth of history" and
"Give me only the history since that version".

* nd/shallow-deepen: (27 commits)
  fetch, upload-pack: --deepen=N extends shallow boundary by N commits
  upload-pack: add get_reachable_list()
  upload-pack: split check_unreachable() in two, prep for get_reachable_list()
  t5500, t5539: tests for shallow depth excluding a ref
  clone: define shallow clone boundary with --shallow-exclude
  fetch: define shallow boundary with --shallow-exclude
  upload-pack: support define shallow boundary by excluding revisions
  refs: add expand_ref()
  t5500, t5539: tests for shallow depth since a specific date
  clone: define shallow clone boundary based on time with --shallow-since
  fetch: define shallow boundary with --shallow-since
  upload-pack: add deepen-since to cut shallow repos based on time
  shallow.c: implement a generic shallow boundary finder based on rev-list
  fetch-pack: use a separate flag for fetch in deepening mode
  fetch-pack.c: mark strings for translating
  fetch-pack: use a common function for verbose printing
  fetch-pack: use skip_prefix() instead of starts_with()
  upload-pack: move rev-list code out of check_non_tip()
  upload-pack: make check_non_tip() clean things up on error
  upload-pack: tighten number parsing at "deepen" lines
  ...
This commit is contained in:
Junio C Hamano
2016-10-10 14:03:50 -07:00
parent a229a30f8a cccf74e2da
commit a460ea4a3c
23 changed files with 890 additions and 224 deletions
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24
builtin/clone.c
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@ -41,9 +41,11 @@ static const char * const builtin_clone_usage[] = {
static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1;
static int option_local = -1, option_no_hardlinks, option_shared, option_recursive;
static int option_shallow_submodules;
static char *option_template, *option_depth;
static int deepen;
static char *option_template, *option_depth, *option_since;
static char *option_origin = NULL;
static char *option_branch = NULL;
static struct string_list option_not = STRING_LIST_INIT_NODUP;
static const char *real_git_dir;
static char *option_upload_pack = "git-upload-pack";
static int option_verbosity;
@ -94,6 +96,10 @@ static struct option builtin_clone_options[] = {
N_("path to git-upload-pack on the remote")),
OPT_STRING(0, "depth", &option_depth, N_("depth"),
N_("create a shallow clone of that depth")),
OPT_STRING(0, "shallow-since", &option_since, N_("time"),
N_("create a shallow clone since a specific time")),
OPT_STRING_LIST(0, "shallow-exclude", &option_not, N_("revision"),
N_("deepen history of shallow clone by excluding rev")),
OPT_BOOL(0, "single-branch", &option_single_branch,
N_("clone only one branch, HEAD or --branch")),
OPT_BOOL(0, "shallow-submodules", &option_shallow_submodules,
@ -861,8 +867,10 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
usage_msg_opt(_("You must specify a repository to clone."),
builtin_clone_usage, builtin_clone_options);
if (option_depth || option_since || option_not.nr)
deepen = 1;
if (option_single_branch == -1)
option_single_branch = option_depth ? 1 : 0;
option_single_branch = deepen ? 1 : 0;
if (option_mirror)
option_bare = 1;
@ -1006,6 +1014,10 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
if (is_local) {
if (option_depth)
warning(_("--depth is ignored in local clones; use file:// instead."));
if (option_since)
warning(_("--shallow-since is ignored in local clones; use file:// instead."));
if (option_not.nr)
warning(_("--shallow-exclude is ignored in local clones; use file:// instead."));
if (!access(mkpath("%s/shallow", path), F_OK)) {
if (option_local > 0)
warning(_("source repository is shallow, ignoring --local"));
@ -1024,6 +1036,12 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
if (option_depth)
transport_set_option(transport, TRANS_OPT_DEPTH,
option_depth);
if (option_since)
transport_set_option(transport, TRANS_OPT_DEEPEN_SINCE,
option_since);
if (option_not.nr)
transport_set_option(transport, TRANS_OPT_DEEPEN_NOT,
(const char *)&option_not);
if (option_single_branch)
transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
@ -1031,7 +1049,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
transport_set_option(transport, TRANS_OPT_UPLOADPACK,
option_upload_pack);
if (transport->smart_options && !option_depth)
if (transport->smart_options && !deepen)
transport->smart_options->check_self_contained_and_connected = 1;
refs = transport_get_remote_refs(transport);