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authorDavid Barr <david.barr@cordelta.com>2010-08-09 22:48:10 (GMT)
committerJunio C Hamano <gitster@pobox.com>2010-08-15 02:35:37 (GMT)
commitc0e6c23dca84227167a6fe1077503ddf32208919 (patch)
tree90db6a49a0ab0210a229cecc136fd946f4919860 /vcs-svn/fast_export.c
parent3bbaec00a8ffc6ea7e71c3b707851fe663d93a45 (diff)
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Infrastructure to write revisions in fast-export format
repo_tree maintains the exporter's state and provides a facility to to call fast_export, which writes objects to stdout suitable for consumption by fast-import. The exported functions roughly correspond to Subversion FS operations. . repo_add, repo_modify, repo_copy, repo_replace, and repo_delete update the current commit, based roughly on the corresponding Subversion FS operation. . repo_commit calls out to fast_export to write the current commit to the fast-import stream in stdout. . repo_diff is used by the fast_export module to write the changes for a commit. . repo_reset erases the exporter's state, so valgrind can be happy. [rr: squelched compiler warnings] [jn: removed support for maintaining state on-disk, though we may want to add it back later] Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'vcs-svn/fast_export.c')
-rw-r--r--vcs-svn/fast_export.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/vcs-svn/fast_export.c b/vcs-svn/fast_export.c
new file mode 100644
index 0000000..3a6156f
--- /dev/null
+++ b/vcs-svn/fast_export.c
@@ -0,0 +1,74 @@
+/*
+ * 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 %06o :%d ", mode, mark);
+ pool_print_seq(depth, path, '/', stdout);
+ putchar('\n');
+}
+
+static char gitsvnline[MAX_GITSVN_LINE_LEN];
+void fast_export_commit(uint32_t revision, uint32_t author, char *log,
+ uint32_t uuid, uint32_t url,
+ unsigned long timestamp)
+{
+ if (!log)
+ log = "";
+ if (~uuid && ~url) {
+ snprintf(gitsvnline, MAX_GITSVN_LINE_LEN, "\n\ngit-svn-id: %s@%d %s\n",
+ pool_fetch(url), revision, pool_fetch(uuid));
+ } else {
+ *gitsvnline = '\0';
+ }
+ printf("commit refs/heads/master\n");
+ printf("committer %s <%s@%s> %ld +0000\n",
+ ~author ? pool_fetch(author) : "nobody",
+ ~author ? pool_fetch(author) : "nobody",
+ ~uuid ? pool_fetch(uuid) : "local", timestamp);
+ printf("data %zd\n%s%s\n",
+ strlen(log) + strlen(gitsvnline), log, 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 %d.\n\n", revision);
+}
+
+void fast_export_blob(uint32_t mode, uint32_t mark, uint32_t len)
+{
+ if (mode == REPO_MODE_LNK) {
+ /* svn symlink blobs start with "link " */
+ buffer_skip_bytes(5);
+ len -= 5;
+ }
+ printf("blob\nmark :%d\ndata %d\n", mark, len);
+ buffer_copy_bytes(len);
+ fputc('\n', stdout);
+}