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Diffstat (limited to 'vcs-svn/svndump.c')
-rw-r--r--vcs-svn/svndump.c86
1 files changed, 61 insertions, 25 deletions
diff --git a/vcs-svn/svndump.c b/vcs-svn/svndump.c
index 572a995..35a8af3 100644
--- a/vcs-svn/svndump.c
+++ b/vcs-svn/svndump.c
@@ -20,15 +20,19 @@
*/
#define constcmp(s, ref) memcmp(s, ref, sizeof(ref) - 1)
+#define REPORT_FILENO 3
+
#define NODEACT_REPLACE 4
#define NODEACT_DELETE 3
#define NODEACT_ADD 2
#define NODEACT_CHANGE 1
#define NODEACT_UNKNOWN 0
-#define DUMP_CTX 0
-#define REV_CTX 1
-#define NODE_CTX 2
+/* States: */
+#define DUMP_CTX 0 /* dump metadata */
+#define REV_CTX 1 /* revision metadata */
+#define NODE_CTX 2 /* node metadata */
+#define INTERNODE_CTX 3 /* between nodes */
#define LENGTH_UNKNOWN (~0)
#define DATE_RFC2822_LEN 31
@@ -201,15 +205,21 @@ static void read_props(void)
static void handle_node(void)
{
- uint32_t mark = 0;
const uint32_t type = node_ctx.type;
const int have_props = node_ctx.propLength != LENGTH_UNKNOWN;
const int have_text = node_ctx.textLength != LENGTH_UNKNOWN;
+ /*
+ * Old text for this node:
+ * NULL - directory or bug
+ * empty_blob - empty
+ * "<dataref>" - data retrievable from fast-import
+ */
+ static const char *const empty_blob = "::empty::";
+ const char *old_data = NULL;
if (node_ctx.text_delta)
die("text deltas not supported");
- if (have_text)
- mark = next_blob_mark();
+
if (node_ctx.action == NODEACT_DELETE) {
if (have_text || have_props || node_ctx.srcRev)
die("invalid dump: deletion node has "
@@ -230,23 +240,26 @@ static void handle_node(void)
die("invalid dump: directories cannot have text attached");
/*
- * Decide on the new content (mark) and mode (node_ctx.type).
+ * Find old content (old_data) and decide on the new mode.
*/
if (node_ctx.action == NODEACT_CHANGE && !~*node_ctx.dst) {
if (type != REPO_MODE_DIR)
die("invalid dump: root of tree is not a regular file");
+ old_data = NULL;
} else if (node_ctx.action == NODEACT_CHANGE) {
uint32_t mode;
- if (!have_text)
- mark = repo_read_path(node_ctx.dst);
- mode = repo_read_mode(node_ctx.dst);
+ old_data = repo_read_path(node_ctx.dst, &mode);
if (mode == REPO_MODE_DIR && type != REPO_MODE_DIR)
die("invalid dump: cannot modify a directory into a file");
if (mode != REPO_MODE_DIR && type == REPO_MODE_DIR)
die("invalid dump: cannot modify a file into a directory");
node_ctx.type = mode;
} else if (node_ctx.action == NODEACT_ADD) {
- if (!have_text && type != REPO_MODE_DIR)
+ if (type == REPO_MODE_DIR)
+ old_data = NULL;
+ else if (have_text)
+ old_data = empty_blob;
+ else
die("invalid dump: adds node without text");
} else {
die("invalid dump: Node-path block lacks Node-action");
@@ -265,18 +278,35 @@ static void handle_node(void)
/*
* Save the result.
*/
- repo_add(node_ctx.dst, node_ctx.type, mark);
- if (have_text)
- fast_export_blob(node_ctx.type, mark,
- node_ctx.textLength, &input);
+ if (type == REPO_MODE_DIR) /* directories are not tracked. */
+ return;
+ assert(old_data);
+ if (old_data == empty_blob)
+ /* For the fast_export_* functions, NULL means empty. */
+ old_data = NULL;
+ if (!have_text) {
+ fast_export_modify(REPO_MAX_PATH_DEPTH, node_ctx.dst,
+ node_ctx.type, old_data);
+ return;
+ }
+ fast_export_modify(REPO_MAX_PATH_DEPTH, node_ctx.dst,
+ node_ctx.type, "inline");
+ fast_export_data(node_ctx.type, node_ctx.textLength, &input);
+}
+
+static void begin_revision(void)
+{
+ if (!rev_ctx.revision) /* revision 0 gets no git commit. */
+ return;
+ fast_export_begin_commit(rev_ctx.revision, rev_ctx.author.buf,
+ &rev_ctx.log, dump_ctx.uuid.buf, dump_ctx.url.buf,
+ rev_ctx.timestamp);
}
-static void handle_revision(void)
+static void end_revision(void)
{
if (rev_ctx.revision)
- repo_commit(rev_ctx.revision, rev_ctx.author.buf,
- &rev_ctx.log, dump_ctx.uuid.buf, dump_ctx.url.buf,
- rev_ctx.timestamp);
+ fast_export_end_commit(rev_ctx.revision);
}
void svndump_read(const char *url)
@@ -317,8 +347,10 @@ void svndump_read(const char *url)
continue;
if (active_ctx == NODE_CTX)
handle_node();
+ if (active_ctx == REV_CTX)
+ begin_revision();
if (active_ctx != DUMP_CTX)
- handle_revision();
+ end_revision();
active_ctx = REV_CTX;
reset_rev_ctx(atoi(val));
break;
@@ -328,6 +360,8 @@ void svndump_read(const char *url)
if (!constcmp(t + strlen("Node-"), "path")) {
if (active_ctx == NODE_CTX)
handle_node();
+ if (active_ctx == REV_CTX)
+ begin_revision();
active_ctx = NODE_CTX;
reset_node_ctx(val);
break;
@@ -398,7 +432,7 @@ void svndump_read(const char *url)
read_props();
} else if (active_ctx == NODE_CTX) {
handle_node();
- active_ctx = REV_CTX;
+ active_ctx = INTERNODE_CTX;
} else {
fprintf(stderr, "Unexpected content length header: %"PRIu32"\n", len);
if (buffer_skip_bytes(&input, len) != len)
@@ -410,15 +444,17 @@ void svndump_read(const char *url)
die_short_read();
if (active_ctx == NODE_CTX)
handle_node();
+ if (active_ctx == REV_CTX)
+ begin_revision();
if (active_ctx != DUMP_CTX)
- handle_revision();
+ end_revision();
}
int svndump_init(const char *filename)
{
if (buffer_init(&input, filename))
return error("cannot open %s: %s", filename, strerror(errno));
- repo_init();
+ fast_export_init(REPORT_FILENO);
strbuf_init(&dump_ctx.uuid, 4096);
strbuf_init(&dump_ctx.url, 4096);
strbuf_init(&rev_ctx.log, 4096);
@@ -431,7 +467,7 @@ int svndump_init(const char *filename)
void svndump_deinit(void)
{
- repo_reset();
+ fast_export_deinit();
reset_dump_ctx(NULL);
reset_rev_ctx(0);
reset_node_ctx(NULL);
@@ -444,8 +480,8 @@ void svndump_deinit(void)
void svndump_reset(void)
{
+ fast_export_reset();
buffer_reset(&input);
- repo_reset();
strbuf_release(&dump_ctx.uuid);
strbuf_release(&dump_ctx.url);
strbuf_release(&rev_ctx.log);