1 files changed, 88 insertions, 0 deletions

diff --git a/vcs-svn/fast_export.c b/vcs-svn/fast_export.c
new file mode 100644
index 0000000000..99ed70b88a
--- /dev/null
+++ b/vcs-svn/fast_export.c
@@ -0,0 +1,88 @@
+/*
+ * Licensed under a two-clause BSD-style license.
+ * See LICENSE for details.
+ */
+
+#include "git-compat-util.h"
+#include "fast_export.h"
+#include "line_buffer.h"
+#include "repo_tree.h"
+#include "string_pool.h"
+
+#define MAX_GITSVN_LINE_LEN 4096
+
+static uint32_t first_commit_done;
+
+void fast_export_delete(uint32_t depth, uint32_t *path)
+{
+	putchar('D');
+	putchar(' ');
+	pool_print_seq(depth, path, '/', stdout);
+	putchar('\n');
+}
+
+void fast_export_modify(uint32_t depth, uint32_t *path, uint32_t mode,
+			uint32_t mark)
+{
+	/* Mode must be 100644, 100755, 120000, or 160000. */
+	printf("M %06"PRIo32" :%"PRIu32" ", mode, mark);
+	pool_print_seq(depth, path, '/', stdout);
+	putchar('\n');
+}
+
+static char gitsvnline[MAX_GITSVN_LINE_LEN];
+void fast_export_commit(uint32_t revision, const char *author,
+			const struct strbuf *log,
+			const char *uuid, const char *url,
+			unsigned long timestamp)
+{
+	static const struct strbuf empty = STRBUF_INIT;
+	if (!log)
+		log = ∅
+	if (*uuid && *url) {
+		snprintf(gitsvnline, MAX_GITSVN_LINE_LEN,
+				"\n\ngit-svn-id: %s@%"PRIu32" %s\n",
+				 url, revision, uuid);
+	} else {
+		*gitsvnline = '\0';
+	}
+	printf("commit refs/heads/master\n");
+	printf("committer %s <%s@%s> %ld +0000\n",
+		   *author ? author : "nobody",
+		   *author ? author : "nobody",
+		   *uuid ? uuid : "local", timestamp);
+	printf("data %"PRIuMAX"\n",
+		(uintmax_t) (log->len + strlen(gitsvnline)));
+	fwrite(log->buf, log->len, 1, stdout);
+	printf("%s\n", gitsvnline);
+	if (!first_commit_done) {
+		if (revision > 1)
+			printf("from refs/heads/master^0\n");
+		first_commit_done = 1;
+	}
+	repo_diff(revision - 1, revision);
+	fputc('\n', stdout);
+
+	printf("progress Imported commit %"PRIu32".\n\n", revision);
+}
+
+static void die_short_read(struct line_buffer *input)
+{
+	if (buffer_ferror(input))
+		die_errno("error reading dump file");
+	die("invalid dump: unexpected end of file");
+}
+
+void fast_export_blob(uint32_t mode, uint32_t mark, uint32_t len, struct line_buffer *input)
+{
+	if (mode == REPO_MODE_LNK) {
+		/* svn symlink blobs start with "link " */
+		len -= 5;
+		if (buffer_skip_bytes(input, 5) != 5)
+			die_short_read(input);
+	}
+	printf("blob\nmark :%"PRIu32"\ndata %"PRIu32"\n", mark, len);
+	if (buffer_copy_bytes(input, len) != len)
+		die_short_read(input);
+	fputc('\n', stdout);
+}