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 char* log_copy(uint32_t length
, char *log
)
36 log_free(log_pool
.size
);
37 buffer
= log_pointer(log_alloc(length
));
38 strncpy(buffer
, log
, length
);
43 uint32_t action
, propLength
, textLength
, srcRev
, type
;
44 uint32_t src
[REPO_MAX_PATH_DEPTH
], dst
[REPO_MAX_PATH_DEPTH
];
45 uint32_t text_delta
, prop_delta
;
49 uint32_t revision
, author
;
50 unsigned long timestamp
;
55 uint32_t version
, uuid
, url
;
59 uint32_t svn_log
, svn_author
, svn_date
, svn_executable
, svn_special
, uuid
,
60 revision_number
, node_path
, node_kind
, node_action
,
61 node_copyfrom_path
, node_copyfrom_rev
, text_content_length
,
62 prop_content_length
, content_length
, svn_fs_dump_format_version
,
63 /* version 3 format */
64 text_delta
, prop_delta
;
67 static void reset_node_ctx(char *fname
)
70 node_ctx
.action
= NODEACT_UNKNOWN
;
71 node_ctx
.propLength
= LENGTH_UNKNOWN
;
72 node_ctx
.textLength
= LENGTH_UNKNOWN
;
75 pool_tok_seq(REPO_MAX_PATH_DEPTH
, node_ctx
.dst
, "/", fname
);
76 node_ctx
.text_delta
= 0;
77 node_ctx
.prop_delta
= 0;
80 static void reset_rev_ctx(uint32_t revision
)
82 rev_ctx
.revision
= revision
;
83 rev_ctx
.timestamp
= 0;
88 static void reset_dump_ctx(uint32_t url
)
95 static void init_keys(void)
97 keys
.svn_log
= pool_intern("svn:log");
98 keys
.svn_author
= pool_intern("svn:author");
99 keys
.svn_date
= pool_intern("svn:date");
100 keys
.svn_executable
= pool_intern("svn:executable");
101 keys
.svn_special
= pool_intern("svn:special");
102 keys
.uuid
= pool_intern("UUID");
103 keys
.revision_number
= pool_intern("Revision-number");
104 keys
.node_path
= pool_intern("Node-path");
105 keys
.node_kind
= pool_intern("Node-kind");
106 keys
.node_action
= pool_intern("Node-action");
107 keys
.node_copyfrom_path
= pool_intern("Node-copyfrom-path");
108 keys
.node_copyfrom_rev
= pool_intern("Node-copyfrom-rev");
109 keys
.text_content_length
= pool_intern("Text-content-length");
110 keys
.prop_content_length
= pool_intern("Prop-content-length");
111 keys
.content_length
= pool_intern("Content-length");
112 keys
.svn_fs_dump_format_version
= pool_intern("SVN-fs-dump-format-version");
113 /* version 3 format (Subversion 1.1.0) */
114 keys
.text_delta
= pool_intern("Text-delta");
115 keys
.prop_delta
= pool_intern("Prop-delta");
118 static void read_props(void)
124 while ((t
= buffer_read_line()) && strcmp(t
, "PROPS-END")) {
125 if (!strncmp(t
, "K ", 2)) {
127 key
= pool_intern(buffer_read_string(len
));
129 } else if (!strncmp(t
, "V ", 2)) {
131 val
= buffer_read_string(len
);
132 if (key
== keys
.svn_log
) {
133 /* Value length excludes terminating nul. */
134 rev_ctx
.log
= log_copy(len
+ 1, val
);
135 } else if (key
== keys
.svn_author
) {
136 rev_ctx
.author
= pool_intern(val
);
137 } else if (key
== keys
.svn_date
) {
138 if (parse_date_basic(val
, &rev_ctx
.timestamp
, NULL
))
139 fprintf(stderr
, "Invalid timestamp: %s\n", val
);
140 } else if (key
== keys
.svn_executable
) {
141 node_ctx
.type
= REPO_MODE_EXE
;
142 } else if (key
== keys
.svn_special
) {
143 node_ctx
.type
= REPO_MODE_LNK
;
151 static void handle_node(void)
154 const uint32_t type
= node_ctx
.type
;
155 const int have_props
= node_ctx
.propLength
!= LENGTH_UNKNOWN
;
157 if (node_ctx
.text_delta
|| node_ctx
.prop_delta
)
158 die("text and property deltas not supported");
159 if (node_ctx
.textLength
!= LENGTH_UNKNOWN
)
160 mark
= next_blob_mark();
161 if (node_ctx
.action
== NODEACT_DELETE
) {
162 if (mark
|| have_props
|| node_ctx
.srcRev
)
163 die("invalid dump: deletion node has "
164 "copyfrom info, text, or properties");
165 return repo_delete(node_ctx
.dst
);
167 if (node_ctx
.action
== NODEACT_REPLACE
) {
168 repo_delete(node_ctx
.dst
);
169 node_ctx
.action
= NODEACT_ADD
;
171 if (node_ctx
.srcRev
) {
172 repo_copy(node_ctx
.srcRev
, node_ctx
.src
, node_ctx
.dst
);
173 if (node_ctx
.action
== NODEACT_ADD
)
174 node_ctx
.action
= NODEACT_CHANGE
;
176 if (mark
&& type
== REPO_MODE_DIR
)
177 die("invalid dump: directories cannot have text attached");
178 if (node_ctx
.action
== NODEACT_CHANGE
) {
179 uint32_t mode
= repo_modify_path(node_ctx
.dst
, 0, mark
);
181 die("invalid dump: path to be modified is missing");
182 if (mode
== REPO_MODE_DIR
&& type
!= REPO_MODE_DIR
)
183 die("invalid dump: cannot modify a directory into a file");
184 if (mode
!= REPO_MODE_DIR
&& type
== REPO_MODE_DIR
)
185 die("invalid dump: cannot modify a file into a directory");
186 node_ctx
.type
= mode
;
187 } else if (node_ctx
.action
== NODEACT_ADD
) {
188 if (!mark
&& type
!= REPO_MODE_DIR
)
189 die("invalid dump: adds node without text");
190 repo_add(node_ctx
.dst
, type
, mark
);
192 die("invalid dump: Node-path block lacks Node-action");
195 const uint32_t old_mode
= node_ctx
.type
;
196 node_ctx
.type
= type
;
197 if (node_ctx
.propLength
)
199 if (node_ctx
.type
!= old_mode
)
200 repo_modify_path(node_ctx
.dst
, node_ctx
.type
, mark
);
203 fast_export_blob(node_ctx
.type
, mark
, node_ctx
.textLength
);
206 static void handle_revision(void)
208 if (rev_ctx
.revision
)
209 repo_commit(rev_ctx
.revision
, rev_ctx
.author
, rev_ctx
.log
,
210 dump_ctx
.uuid
, dump_ctx
.url
, rev_ctx
.timestamp
);
213 void svndump_read(const char *url
)
217 uint32_t active_ctx
= DUMP_CTX
;
221 reset_dump_ctx(pool_intern(url
));
222 while ((t
= buffer_read_line())) {
223 val
= strstr(t
, ": ");
228 key
= pool_intern(t
);
230 if (key
== keys
.svn_fs_dump_format_version
) {
231 dump_ctx
.version
= atoi(val
);
232 if (dump_ctx
.version
> 3)
233 die("expected svn dump format version <= 3, found %d",
235 } else if (key
== keys
.uuid
) {
236 dump_ctx
.uuid
= pool_intern(val
);
237 } else if (key
== keys
.revision_number
) {
238 if (active_ctx
== NODE_CTX
)
240 if (active_ctx
!= DUMP_CTX
)
242 active_ctx
= REV_CTX
;
243 reset_rev_ctx(atoi(val
));
244 } else if (key
== keys
.node_path
) {
245 if (active_ctx
== NODE_CTX
)
247 active_ctx
= NODE_CTX
;
249 } else if (key
== keys
.node_kind
) {
250 if (!strcmp(val
, "dir"))
251 node_ctx
.type
= REPO_MODE_DIR
;
252 else if (!strcmp(val
, "file"))
253 node_ctx
.type
= REPO_MODE_BLB
;
255 fprintf(stderr
, "Unknown node-kind: %s\n", val
);
256 } else if (key
== keys
.node_action
) {
257 if (!strcmp(val
, "delete")) {
258 node_ctx
.action
= NODEACT_DELETE
;
259 } else if (!strcmp(val
, "add")) {
260 node_ctx
.action
= NODEACT_ADD
;
261 } else if (!strcmp(val
, "change")) {
262 node_ctx
.action
= NODEACT_CHANGE
;
263 } else if (!strcmp(val
, "replace")) {
264 node_ctx
.action
= NODEACT_REPLACE
;
266 fprintf(stderr
, "Unknown node-action: %s\n", val
);
267 node_ctx
.action
= NODEACT_UNKNOWN
;
269 } else if (key
== keys
.node_copyfrom_path
) {
270 pool_tok_seq(REPO_MAX_PATH_DEPTH
, node_ctx
.src
, "/", val
);
271 } else if (key
== keys
.node_copyfrom_rev
) {
272 node_ctx
.srcRev
= atoi(val
);
273 } else if (key
== keys
.text_content_length
) {
274 node_ctx
.textLength
= atoi(val
);
275 } else if (key
== keys
.prop_content_length
) {
276 node_ctx
.propLength
= atoi(val
);
277 } else if (key
== keys
.text_delta
) {
278 node_ctx
.text_delta
= !strcmp(val
, "true");
279 } else if (key
== keys
.prop_delta
) {
280 node_ctx
.prop_delta
= !strcmp(val
, "true");
281 } else if (key
== keys
.content_length
) {
284 if (active_ctx
== REV_CTX
) {
286 } else if (active_ctx
== NODE_CTX
) {
288 active_ctx
= REV_CTX
;
290 fprintf(stderr
, "Unexpected content length header: %"PRIu32
"\n", len
);
291 buffer_skip_bytes(len
);
295 if (active_ctx
== NODE_CTX
)
297 if (active_ctx
!= DUMP_CTX
)
301 int svndump_init(const char *filename
)
303 if (buffer_init(filename
))
304 return error("cannot open %s: %s", filename
, strerror(errno
));
308 reset_node_ctx(NULL
);
313 void svndump_deinit(void)
319 reset_node_ctx(NULL
);
321 fprintf(stderr
, "Input error\n");
323 fprintf(stderr
, "Output error\n");
326 void svndump_reset(void)
333 reset_node_ctx(NULL
);