2 * Parse and rearrange a svnadmin dump.
3 * Create the dump with:
4 * svnadmin dump --incremental -r<startrev>:<endrev> <repository> >outfile
6 * Licensed under a two-clause BSD-style license.
7 * See LICENSE for details.
11 #include "repo_tree.h"
12 #include "fast_export.h"
13 #include "line_buffer.h"
15 #include "string_pool.h"
17 #define NODEACT_REPLACE 4
18 #define NODEACT_DELETE 3
20 #define NODEACT_CHANGE 1
21 #define NODEACT_UNKNOWN 0
27 #define LENGTH_UNKNOWN (~0)
28 #define DATE_RFC2822_LEN 31
30 /* Create memory pool for log messages */
31 obj_pool_gen(log
, char, 4096)
33 static struct line_buffer input
= LINE_BUFFER_INIT
;
35 static char *log_copy(uint32_t length
, const char *log
)
38 log_free(log_pool
.size
);
39 buffer
= log_pointer(log_alloc(length
));
40 strncpy(buffer
, log
, length
);
45 uint32_t action
, propLength
, textLength
, srcRev
, type
;
46 uint32_t src
[REPO_MAX_PATH_DEPTH
], dst
[REPO_MAX_PATH_DEPTH
];
47 uint32_t text_delta
, prop_delta
;
51 uint32_t revision
, author
;
52 unsigned long timestamp
;
57 uint32_t version
, uuid
, url
;
61 uint32_t svn_log
, svn_author
, svn_date
, svn_executable
, svn_special
, uuid
,
62 revision_number
, node_path
, node_kind
, node_action
,
63 node_copyfrom_path
, node_copyfrom_rev
, text_content_length
,
64 prop_content_length
, content_length
, svn_fs_dump_format_version
,
65 /* version 3 format */
66 text_delta
, prop_delta
;
69 static void reset_node_ctx(char *fname
)
72 node_ctx
.action
= NODEACT_UNKNOWN
;
73 node_ctx
.propLength
= LENGTH_UNKNOWN
;
74 node_ctx
.textLength
= LENGTH_UNKNOWN
;
77 pool_tok_seq(REPO_MAX_PATH_DEPTH
, node_ctx
.dst
, "/", fname
);
78 node_ctx
.text_delta
= 0;
79 node_ctx
.prop_delta
= 0;
82 static void reset_rev_ctx(uint32_t revision
)
84 rev_ctx
.revision
= revision
;
85 rev_ctx
.timestamp
= 0;
90 static void reset_dump_ctx(uint32_t url
)
97 static void init_keys(void)
99 keys
.svn_log
= pool_intern("svn:log");
100 keys
.svn_author
= pool_intern("svn:author");
101 keys
.svn_date
= pool_intern("svn:date");
102 keys
.svn_executable
= pool_intern("svn:executable");
103 keys
.svn_special
= pool_intern("svn:special");
104 keys
.uuid
= pool_intern("UUID");
105 keys
.revision_number
= pool_intern("Revision-number");
106 keys
.node_path
= pool_intern("Node-path");
107 keys
.node_kind
= pool_intern("Node-kind");
108 keys
.node_action
= pool_intern("Node-action");
109 keys
.node_copyfrom_path
= pool_intern("Node-copyfrom-path");
110 keys
.node_copyfrom_rev
= pool_intern("Node-copyfrom-rev");
111 keys
.text_content_length
= pool_intern("Text-content-length");
112 keys
.prop_content_length
= pool_intern("Prop-content-length");
113 keys
.content_length
= pool_intern("Content-length");
114 keys
.svn_fs_dump_format_version
= pool_intern("SVN-fs-dump-format-version");
115 /* version 3 format (Subversion 1.1.0) */
116 keys
.text_delta
= pool_intern("Text-delta");
117 keys
.prop_delta
= pool_intern("Prop-delta");
120 static void handle_property(uint32_t key
, const char *val
, uint32_t len
,
123 if (key
== keys
.svn_log
) {
125 die("invalid dump: unsets svn:log");
126 /* Value length excludes terminating nul. */
127 rev_ctx
.log
= log_copy(len
+ 1, val
);
128 } else if (key
== keys
.svn_author
) {
129 rev_ctx
.author
= pool_intern(val
);
130 } else if (key
== keys
.svn_date
) {
132 die("invalid dump: unsets svn:date");
133 if (parse_date_basic(val
, &rev_ctx
.timestamp
, NULL
))
134 warning("invalid timestamp: %s", val
);
135 } else if (key
== keys
.svn_executable
|| key
== keys
.svn_special
) {
139 die("invalid dump: sets type twice");
142 node_ctx
.type
= REPO_MODE_BLB
;
146 node_ctx
.type
= key
== keys
.svn_executable
?
152 static void read_props(void)
157 * NEEDSWORK: to support simple mode changes like
164 * we keep track of whether a mode has been set and reset to
165 * plain file only if not. We should be keeping track of the
166 * symlink and executable bits separately instead.
168 uint32_t type_set
= 0;
169 while ((t
= buffer_read_line(&input
)) && strcmp(t
, "PROPS-END")) {
172 const char type
= t
[0];
174 if (!type
|| t
[1] != ' ')
175 die("invalid property line: %s\n", t
);
177 val
= buffer_read_string(&input
, len
);
178 buffer_skip_bytes(&input
, 1); /* Discard trailing newline. */
182 key
= pool_intern(val
);
185 key
= pool_intern(val
);
190 handle_property(key
, val
, len
, &type_set
);
194 die("invalid property line: %s\n", t
);
199 static void handle_node(void)
202 const uint32_t type
= node_ctx
.type
;
203 const int have_props
= node_ctx
.propLength
!= LENGTH_UNKNOWN
;
204 const int have_text
= node_ctx
.textLength
!= LENGTH_UNKNOWN
;
206 if (node_ctx
.text_delta
)
207 die("text deltas not supported");
209 mark
= next_blob_mark();
210 if (node_ctx
.action
== NODEACT_DELETE
) {
211 if (have_text
|| have_props
|| node_ctx
.srcRev
)
212 die("invalid dump: deletion node has "
213 "copyfrom info, text, or properties");
214 return repo_delete(node_ctx
.dst
);
216 if (node_ctx
.action
== NODEACT_REPLACE
) {
217 repo_delete(node_ctx
.dst
);
218 node_ctx
.action
= NODEACT_ADD
;
220 if (node_ctx
.srcRev
) {
221 repo_copy(node_ctx
.srcRev
, node_ctx
.src
, node_ctx
.dst
);
222 if (node_ctx
.action
== NODEACT_ADD
)
223 node_ctx
.action
= NODEACT_CHANGE
;
225 if (have_text
&& type
== REPO_MODE_DIR
)
226 die("invalid dump: directories cannot have text attached");
229 * Decide on the new content (mark) and mode (node_ctx.type).
231 if (node_ctx
.action
== NODEACT_CHANGE
&& !~*node_ctx
.dst
) {
232 if (type
!= REPO_MODE_DIR
)
233 die("invalid dump: root of tree is not a regular file");
234 } else if (node_ctx
.action
== NODEACT_CHANGE
) {
237 mark
= repo_read_path(node_ctx
.dst
);
238 mode
= repo_modify_path(node_ctx
.dst
, 0, 0);
240 die("invalid dump: path to be modified is missing");
241 if (mode
== REPO_MODE_DIR
&& type
!= REPO_MODE_DIR
)
242 die("invalid dump: cannot modify a directory into a file");
243 if (mode
!= REPO_MODE_DIR
&& type
== REPO_MODE_DIR
)
244 die("invalid dump: cannot modify a file into a directory");
245 node_ctx
.type
= mode
;
246 } else if (node_ctx
.action
== NODEACT_ADD
) {
247 if (!have_text
&& type
!= REPO_MODE_DIR
)
248 die("invalid dump: adds node without text");
250 die("invalid dump: Node-path block lacks Node-action");
254 * Adjust mode to reflect properties.
257 if (!node_ctx
.prop_delta
)
258 node_ctx
.type
= type
;
259 if (node_ctx
.propLength
)
266 repo_add(node_ctx
.dst
, node_ctx
.type
, mark
);
268 fast_export_blob(node_ctx
.type
, mark
,
269 node_ctx
.textLength
, &input
);
272 static void handle_revision(void)
274 if (rev_ctx
.revision
)
275 repo_commit(rev_ctx
.revision
, rev_ctx
.author
, rev_ctx
.log
,
276 dump_ctx
.uuid
, dump_ctx
.url
, rev_ctx
.timestamp
);
279 void svndump_read(const char *url
)
283 uint32_t active_ctx
= DUMP_CTX
;
287 reset_dump_ctx(pool_intern(url
));
288 while ((t
= buffer_read_line(&input
))) {
289 val
= strstr(t
, ": ");
294 key
= pool_intern(t
);
296 if (key
== keys
.svn_fs_dump_format_version
) {
297 dump_ctx
.version
= atoi(val
);
298 if (dump_ctx
.version
> 3)
299 die("expected svn dump format version <= 3, found %"PRIu32
,
301 } else if (key
== keys
.uuid
) {
302 dump_ctx
.uuid
= pool_intern(val
);
303 } else if (key
== keys
.revision_number
) {
304 if (active_ctx
== NODE_CTX
)
306 if (active_ctx
!= DUMP_CTX
)
308 active_ctx
= REV_CTX
;
309 reset_rev_ctx(atoi(val
));
310 } else if (key
== keys
.node_path
) {
311 if (active_ctx
== NODE_CTX
)
313 active_ctx
= NODE_CTX
;
315 } else if (key
== keys
.node_kind
) {
316 if (!strcmp(val
, "dir"))
317 node_ctx
.type
= REPO_MODE_DIR
;
318 else if (!strcmp(val
, "file"))
319 node_ctx
.type
= REPO_MODE_BLB
;
321 fprintf(stderr
, "Unknown node-kind: %s\n", val
);
322 } else if (key
== keys
.node_action
) {
323 if (!strcmp(val
, "delete")) {
324 node_ctx
.action
= NODEACT_DELETE
;
325 } else if (!strcmp(val
, "add")) {
326 node_ctx
.action
= NODEACT_ADD
;
327 } else if (!strcmp(val
, "change")) {
328 node_ctx
.action
= NODEACT_CHANGE
;
329 } else if (!strcmp(val
, "replace")) {
330 node_ctx
.action
= NODEACT_REPLACE
;
332 fprintf(stderr
, "Unknown node-action: %s\n", val
);
333 node_ctx
.action
= NODEACT_UNKNOWN
;
335 } else if (key
== keys
.node_copyfrom_path
) {
336 pool_tok_seq(REPO_MAX_PATH_DEPTH
, node_ctx
.src
, "/", val
);
337 } else if (key
== keys
.node_copyfrom_rev
) {
338 node_ctx
.srcRev
= atoi(val
);
339 } else if (key
== keys
.text_content_length
) {
340 node_ctx
.textLength
= atoi(val
);
341 } else if (key
== keys
.prop_content_length
) {
342 node_ctx
.propLength
= atoi(val
);
343 } else if (key
== keys
.text_delta
) {
344 node_ctx
.text_delta
= !strcmp(val
, "true");
345 } else if (key
== keys
.prop_delta
) {
346 node_ctx
.prop_delta
= !strcmp(val
, "true");
347 } else if (key
== keys
.content_length
) {
349 buffer_read_line(&input
);
350 if (active_ctx
== REV_CTX
) {
352 } else if (active_ctx
== NODE_CTX
) {
354 active_ctx
= REV_CTX
;
356 fprintf(stderr
, "Unexpected content length header: %"PRIu32
"\n", len
);
357 buffer_skip_bytes(&input
, len
);
361 if (active_ctx
== NODE_CTX
)
363 if (active_ctx
!= DUMP_CTX
)
367 int svndump_init(const char *filename
)
369 if (buffer_init(&input
, filename
))
370 return error("cannot open %s: %s", filename
, strerror(errno
));
374 reset_node_ctx(NULL
);
379 void svndump_deinit(void)
385 reset_node_ctx(NULL
);
386 if (buffer_deinit(&input
))
387 fprintf(stderr
, "Input error\n");
389 fprintf(stderr
, "Output error\n");
392 void svndump_reset(void)
395 buffer_reset(&input
);
399 reset_node_ctx(NULL
);