entry.c: mark file-local function static
[gitweb.git] / transport-helper.c
index 5078c7100f16e9d7ac08aad05e3797ad5b6626bc..11f3d7ec52893dcdee127d8493f1897c6c091b31 100644 (file)
@@ -6,6 +6,7 @@
 #include "diff.h"
 #include "revision.h"
 #include "quote.h"
+#include "remote.h"
 
 struct helper_data
 {
@@ -13,8 +14,12 @@ struct helper_data
        struct child_process *helper;
        FILE *out;
        unsigned fetch : 1,
+               import : 1,
                option : 1,
                push : 1;
+       /* These go from remote name (as in "list") to private name */
+       struct refspec *refspecs;
+       int refspec_nr;
 };
 
 static struct child_process *get_helper(struct transport *transport)
@@ -22,6 +27,9 @@ static struct child_process *get_helper(struct transport *transport)
        struct helper_data *data = transport->data;
        struct strbuf buf = STRBUF_INIT;
        struct child_process *helper;
+       const char **refspecs = NULL;
+       int refspec_nr = 0;
+       int refspec_alloc = 0;
 
        if (data->helper)
                return data->helper;
@@ -55,7 +63,25 @@ static struct child_process *get_helper(struct transport *transport)
                        data->option = 1;
                if (!strcmp(buf.buf, "push"))
                        data->push = 1;
+               if (!strcmp(buf.buf, "import"))
+                       data->import = 1;
+               if (!data->refspecs && !prefixcmp(buf.buf, "refspec ")) {
+                       ALLOC_GROW(refspecs,
+                                  refspec_nr + 1,
+                                  refspec_alloc);
+                       refspecs[refspec_nr++] = strdup(buf.buf + strlen("refspec "));
+               }
+       }
+       if (refspecs) {
+               int i;
+               data->refspec_nr = refspec_nr;
+               data->refspecs = parse_fetch_refspec(refspec_nr, refspecs);
+               for (i = 0; i < refspec_nr; i++) {
+                       free((char *)refspecs[i]);
+               }
+               free(refspecs);
        }
+       strbuf_release(&buf);
        return data->helper;
 }
 
@@ -72,7 +98,6 @@ static int disconnect_helper(struct transport *transport)
                free(data->helper);
                data->helper = NULL;
        }
-       free(data);
        return 0;
 }
 
@@ -154,8 +179,18 @@ static void standard_options(struct transport *t)
        set_helper_option(t, "verbosity", buf);
 }
 
+static int release_helper(struct transport *transport)
+{
+       struct helper_data *data = transport->data;
+       free_refspec(data->refspec_nr, data->refspecs);
+       data->refspecs = NULL;
+       disconnect_helper(transport);
+       free(transport->data);
+       return 0;
+}
+
 static int fetch_with_fetch(struct transport *transport,
-                           int nr_heads, const struct ref **to_fetch)
+                           int nr_heads, struct ref **to_fetch)
 {
        struct helper_data *data = transport->data;
        int i;
@@ -197,8 +232,64 @@ static int fetch_with_fetch(struct transport *transport,
        return 0;
 }
 
+static int get_importer(struct transport *transport, struct child_process *fastimport)
+{
+       struct child_process *helper = get_helper(transport);
+       memset(fastimport, 0, sizeof(*fastimport));
+       fastimport->in = helper->out;
+       fastimport->argv = xcalloc(5, sizeof(*fastimport->argv));
+       fastimport->argv[0] = "fast-import";
+       fastimport->argv[1] = "--quiet";
+
+       fastimport->git_cmd = 1;
+       return start_command(fastimport);
+}
+
+static int fetch_with_import(struct transport *transport,
+                            int nr_heads, struct ref **to_fetch)
+{
+       struct child_process fastimport;
+       struct child_process *helper = get_helper(transport);
+       struct helper_data *data = transport->data;
+       int i;
+       struct ref *posn;
+       struct strbuf buf = STRBUF_INIT;
+
+       if (get_importer(transport, &fastimport))
+               die("Couldn't run fast-import");
+
+       for (i = 0; i < nr_heads; i++) {
+               posn = to_fetch[i];
+               if (posn->status & REF_STATUS_UPTODATE)
+                       continue;
+
+               strbuf_addf(&buf, "import %s\n", posn->name);
+               write_in_full(helper->in, buf.buf, buf.len);
+               strbuf_reset(&buf);
+       }
+       disconnect_helper(transport);
+       finish_command(&fastimport);
+       free(fastimport.argv);
+       fastimport.argv = NULL;
+
+       for (i = 0; i < nr_heads; i++) {
+               char *private;
+               posn = to_fetch[i];
+               if (posn->status & REF_STATUS_UPTODATE)
+                       continue;
+               if (data->refspecs)
+                       private = apply_refspecs(data->refspecs, data->refspec_nr, posn->name);
+               else
+                       private = strdup(posn->name);
+               read_ref(private, posn->old_sha1);
+               free(private);
+       }
+       strbuf_release(&buf);
+       return 0;
+}
+
 static int fetch(struct transport *transport,
-                int nr_heads, const struct ref **to_fetch)
+                int nr_heads, struct ref **to_fetch)
 {
        struct helper_data *data = transport->data;
        int i, count;
@@ -214,6 +305,9 @@ static int fetch(struct transport *transport,
        if (data->fetch)
                return fetch_with_fetch(transport, nr_heads, to_fetch);
 
+       if (data->import)
+               return fetch_with_import(transport, nr_heads, to_fetch);
+
        return -1;
 }
 
@@ -343,6 +437,22 @@ static int push_refs(struct transport *transport,
        return 0;
 }
 
+static int has_attribute(const char *attrs, const char *attr) {
+       int len;
+       if (!attrs)
+               return 0;
+
+       len = strlen(attr);
+       for (;;) {
+               const char *space = strchrnul(attrs, ' ');
+               if (len == space - attrs && !strncmp(attrs, attr, len))
+                       return 1;
+               if (!*space)
+                       return 0;
+               attrs = space + 1;
+       }
+}
+
 static struct ref *get_refs_list(struct transport *transport, int for_push)
 {
        struct helper_data *data = transport->data;
@@ -379,6 +489,12 @@ static struct ref *get_refs_list(struct transport *transport, int for_push)
                        (*tail)->symref = xstrdup(buf.buf + 1);
                else if (buf.buf[0] != '?')
                        get_sha1_hex(buf.buf, (*tail)->old_sha1);
+               if (eon) {
+                       if (has_attribute(eon + 1, "unchanged")) {
+                               (*tail)->status |= REF_STATUS_UPTODATE;
+                               read_ref((*tail)->name, (*tail)->old_sha1);
+                       }
+               }
                tail = &((*tail)->next);
        }
        strbuf_release(&buf);
@@ -399,6 +515,6 @@ int transport_helper_init(struct transport *transport, const char *name)
        transport->get_refs_list = get_refs_list;
        transport->fetch = fetch;
        transport->push_refs = push_refs;
-       transport->disconnect = disconnect_helper;
+       transport->disconnect = release_helper;
        return 0;
 }