git-p4: add Git LFS backend for large file system

diff --git a/transport-helper.c b/transport-helper.c
index 0224687a2316798c57315093315eafae0da0b1aa..99f1ace1f2b56c359eba6736d1f0ab0fb49ba980 100644 (file)
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -5,7 +5,6 @@
 #include "commit.h"
 #include "diff.h"
 #include "revision.h"
-#include "quote.h"
 #include "remote.h"
 #include "string-list.h"
 #include "thread-utils.h"
@@ -98,6 +97,8 @@ static void do_take_over(struct transport *transport)
        free(data);
 }
 
+static void standard_options(struct transport *t);
+
 static struct child_process *get_helper(struct transport *transport)
 {
        struct helper_data *data = transport->data;
@@ -212,6 +213,7 @@ static struct child_process *get_helper(struct transport *transport)
        strbuf_release(&buf);
        if (debug)
                fprintf(stderr, "Debug: Capabilities complete.\n");
+       standard_options(transport);
        return data->helper;
 }
 
@@ -255,7 +257,6 @@ static const char *boolean_options[] = {
        TRANS_OPT_THIN,
        TRANS_OPT_KEEP,
        TRANS_OPT_FOLLOWTAGS,
-       TRANS_OPT_PUSH_CERT
        };
 
 static int set_helper_option(struct transport *transport,
@@ -339,24 +340,14 @@ static int fetch_with_fetch(struct transport *transport,
        int i;
        struct strbuf buf = STRBUF_INIT;
 
-       standard_options(transport);
-       if (data->check_connectivity &&
-           data->transport_options.check_self_contained_and_connected)
-               set_helper_option(transport, "check-connectivity", "true");
-
-       if (transport->cloning)
-               set_helper_option(transport, "cloning", "true");
-
-       if (data->transport_options.update_shallow)
-               set_helper_option(transport, "update-shallow", "true");
-
        for (i = 0; i < nr_heads; i++) {
                const struct ref *posn = to_fetch[i];
                if (posn->status & REF_STATUS_UPTODATE)
                        continue;
 
                strbuf_addf(&buf, "fetch %s %s\n",
-                           sha1_to_hex(posn->old_sha1), posn->name);
+                           sha1_to_hex(posn->old_sha1),
+                           posn->symref ? posn->symref : posn->name);
        }
 
        strbuf_addch(&buf, '\n');
@@ -454,7 +445,8 @@ static int fetch_with_import(struct transport *transport,
                if (posn->status & REF_STATUS_UPTODATE)
                        continue;
 
-               strbuf_addf(&buf, "import %s\n", posn->name);
+               strbuf_addf(&buf, "import %s\n",
+                           posn->symref ? posn->symref : posn->name);
                sendline(data, &buf);
                strbuf_reset(&buf);
        }
@@ -487,16 +479,18 @@ static int fetch_with_import(struct transport *transport,
         * fast-forward or this is a forced update.
         */
        for (i = 0; i < nr_heads; i++) {
-               char *private;
+               char *private, *name;
                posn = to_fetch[i];
                if (posn->status & REF_STATUS_UPTODATE)
                        continue;
+               name = posn->symref ? posn->symref : posn->name;
                if (data->refspecs)
-                       private = apply_refspecs(data->refspecs, data->refspec_nr, posn->name);
+                       private = apply_refspecs(data->refspecs, data->refspec_nr, name);
                else
-                       private = xstrdup(posn->name);
+                       private = xstrdup(name);
                if (private) {
-                       read_ref(private, posn->old_sha1);
+                       if (read_ref(private, posn->old_sha1) < 0)
+                               die("Could not read ref %s", private);
                        free(private);
                }
        }
@@ -620,6 +614,16 @@ static int fetch(struct transport *transport,
        if (!count)
                return 0;
 
+       if (data->check_connectivity &&
+           data->transport_options.check_self_contained_and_connected)
+               set_helper_option(transport, "check-connectivity", "true");
+
+       if (transport->cloning)
+               set_helper_option(transport, "cloning", "true");
+
+       if (data->transport_options.update_shallow)
+               set_helper_option(transport, "update-shallow", "true");
+
        if (data->fetch)
                return fetch_with_fetch(transport, nr_heads, to_fetch);
 
@@ -759,6 +763,21 @@ static int push_update_refs_status(struct helper_data *data,
        return ret;
 }
 
+static void set_common_push_options(struct transport *transport,
+                                  const char *name, int flags)
+{
+       if (flags & TRANSPORT_PUSH_DRY_RUN) {
+               if (set_helper_option(transport, "dry-run", "true") != 0)
+                       die("helper %s does not support dry-run", name);
+       } else if (flags & TRANSPORT_PUSH_CERT_ALWAYS) {
+               if (set_helper_option(transport, TRANS_OPT_PUSH_CERT, "true") != 0)
+                       die("helper %s does not support --signed", name);
+       } else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED) {
+               if (set_helper_option(transport, TRANS_OPT_PUSH_CERT, "if-asked") != 0)
+                       die("helper %s does not support --signed=if-asked", name);
+       }
+}
+
 static int push_refs_with_push(struct transport *transport,
                               struct ref *remote_refs, int flags)
 {
@@ -824,17 +843,9 @@ static int push_refs_with_push(struct transport *transport,
                return 0;
        }
 
-       standard_options(transport);
        for_each_string_list_item(cas_option, &cas_options)
                set_helper_option(transport, "cas", cas_option->string);
-
-       if (flags & TRANSPORT_PUSH_DRY_RUN) {
-               if (set_helper_option(transport, "dry-run", "true") != 0)
-                       die("helper %s does not support dry-run", data->name);
-       } else if (flags & TRANSPORT_PUSH_CERT) {
-               if (set_helper_option(transport, TRANS_OPT_PUSH_CERT, "true") != 0)
-                       die("helper %s does not support --signed", data->name);
-       }
+       set_common_push_options(transport, data->name, flags);
 
        strbuf_addch(&buf, '\n');
        sendline(data, &buf);
@@ -855,14 +866,7 @@ static int push_refs_with_export(struct transport *transport,
        if (!data->refspecs)
                die("remote-helper doesn't support push; refspec needed");
 
-       if (flags & TRANSPORT_PUSH_DRY_RUN) {
-               if (set_helper_option(transport, "dry-run", "true") != 0)
-                       die("helper %s does not support dry-run", data->name);
-       } else if (flags & TRANSPORT_PUSH_CERT) {
-               if (set_helper_option(transport, TRANS_OPT_PUSH_CERT, "true") != 0)
-                       die("helper %s does not support dry-run", data->name);
-       }
-
+       set_common_push_options(transport, data->name, flags);
        if (flags & TRANSPORT_PUSH_FORCE) {
                if (set_helper_option(transport, "force", "true") != 0)
                        warning("helper %s does not support 'force'", data->name);
@@ -1016,7 +1020,10 @@ static struct ref *get_refs_list(struct transport *transport, int for_push)
                if (eon) {
                        if (has_attribute(eon + 1, "unchanged")) {
                                (*tail)->status |= REF_STATUS_UPTODATE;
-                               read_ref((*tail)->name, (*tail)->old_sha1);
+                               if (read_ref((*tail)->name,
+                                            (*tail)->old_sha1) < 0)
+                                       die(N_("Could not read ref %s"),
+                                           (*tail)->name);
                        }
                }
                tail = &((*tail)->next);