[thirdparty/git.git] / vcs-svn / svndump.c

/*
 * Parse and rearrange a svnadmin dump.
 * Create the dump with:
 * svnadmin dump --incremental -r<startrev>:<endrev> <repository> >outfile
 *
 * Licensed under a two-clause BSD-style license.
 * See LICENSE for details.
 */

#include "cache.h"
#include "repo_tree.h"
#include "fast_export.h"
#include "line_buffer.h"
#include "string_pool.h"
#include "strbuf.h"

/*
 * Compare start of string to literal of equal length;
 * must be guarded by length test.
 */
#define constcmp(s, ref) memcmp(s, ref, sizeof(ref) - 1)

#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

#define LENGTH_UNKNOWN (~0)
#define DATE_RFC2822_LEN 31

static struct line_buffer input = LINE_BUFFER_INIT;

static struct {
	uint32_t action, propLength, textLength, srcRev, type;
	uint32_t src[REPO_MAX_PATH_DEPTH], dst[REPO_MAX_PATH_DEPTH];
	uint32_t text_delta, prop_delta;
} node_ctx;

static struct {
	uint32_t revision;
	unsigned long timestamp;
	struct strbuf log, author;
} rev_ctx;

static struct {
	uint32_t version;
	struct strbuf uuid, url;
} dump_ctx;

static void reset_node_ctx(char *fname)
{
	node_ctx.type = 0;
	node_ctx.action = NODEACT_UNKNOWN;
	node_ctx.propLength = LENGTH_UNKNOWN;
	node_ctx.textLength = LENGTH_UNKNOWN;
	node_ctx.src[0] = ~0;
	node_ctx.srcRev = 0;
	pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.dst, "/", fname);
	node_ctx.text_delta = 0;
	node_ctx.prop_delta = 0;
}

static void reset_rev_ctx(uint32_t revision)
{
	rev_ctx.revision = revision;
	rev_ctx.timestamp = 0;
	strbuf_reset(&rev_ctx.log);
	strbuf_reset(&rev_ctx.author);
}

static void reset_dump_ctx(const char *url)
{
	strbuf_reset(&dump_ctx.url);
	if (url)
		strbuf_addstr(&dump_ctx.url, url);
	dump_ctx.version = 1;
	strbuf_reset(&dump_ctx.uuid);
}

static void handle_property(const struct strbuf *key_buf,
				struct strbuf *val,
				uint32_t *type_set)
{
	const char *key = key_buf->buf;
	size_t keylen = key_buf->len;

	switch (keylen + 1) {
	case sizeof("svn:log"):
		if (constcmp(key, "svn:log"))
			break;
		if (!val)
			die("invalid dump: unsets svn:log");
		strbuf_swap(&rev_ctx.log, val);
		break;
	case sizeof("svn:author"):
		if (constcmp(key, "svn:author"))
			break;
		if (!val)
			strbuf_reset(&rev_ctx.author);
		else
			strbuf_swap(&rev_ctx.author, val);
		break;
	case sizeof("svn:date"):
		if (constcmp(key, "svn:date"))
			break;
		if (!val)
			die("invalid dump: unsets svn:date");
		if (parse_date_basic(val->buf, &rev_ctx.timestamp, NULL))
			warning("invalid timestamp: %s", val->buf);
		break;
	case sizeof("svn:executable"):
	case sizeof("svn:special"):
		if (keylen == strlen("svn:executable") &&
		    constcmp(key, "svn:executable"))
			break;
		if (keylen == strlen("svn:special") &&
		    constcmp(key, "svn:special"))
			break;
		if (*type_set) {
			if (!val)
				return;
			die("invalid dump: sets type twice");
		}
		if (!val) {
			node_ctx.type = REPO_MODE_BLB;
			return;
		}
		*type_set = 1;
		node_ctx.type = keylen == strlen("svn:executable") ?
				REPO_MODE_EXE :
				REPO_MODE_LNK;
	}
}

static void die_short_read(void)
{
	if (buffer_ferror(&input))
		die_errno("error reading dump file");
	die("invalid dump: unexpected end of file");
}

static void read_props(void)
{
	static struct strbuf key = STRBUF_INIT;
	static struct strbuf val = STRBUF_INIT;
	const char *t;
	/*
	 * NEEDSWORK: to support simple mode changes like
	 *	K 11
	 *	svn:special
	 *	V 1
	 *	*
	 *	D 14
	 *	svn:executable
	 * we keep track of whether a mode has been set and reset to
	 * plain file only if not.  We should be keeping track of the
	 * symlink and executable bits separately instead.
	 */
	uint32_t type_set = 0;
	while ((t = buffer_read_line(&input)) && strcmp(t, "PROPS-END")) {
		uint32_t len;
		const char type = t[0];
		int ch;

		if (!type || t[1] != ' ')
			die("invalid property line: %s\n", t);
		len = atoi(&t[2]);
		strbuf_reset(&val);
		buffer_read_binary(&input, &val, len);
		if (val.len < len)
			die_short_read();

		/* Discard trailing newline. */
		ch = buffer_read_char(&input);
		if (ch == EOF)
			die_short_read();
		if (ch != '\n')
			die("invalid dump: expected newline after %s", val.buf);

		switch (type) {
		case 'K':
			strbuf_swap(&key, &val);
			continue;
		case 'D':
			handle_property(&val, NULL, &type_set);
			continue;
		case 'V':
			handle_property(&key, &val, &type_set);
			strbuf_reset(&key);
			continue;
		default:
			die("invalid property line: %s\n", t);
		}
	}
}

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;

	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 "
				"copyfrom info, text, or properties");
		repo_delete(node_ctx.dst);
		return;
	}
	if (node_ctx.action == NODEACT_REPLACE) {
		repo_delete(node_ctx.dst);
		node_ctx.action = NODEACT_ADD;
	}
	if (node_ctx.srcRev) {
		repo_copy(node_ctx.srcRev, node_ctx.src, node_ctx.dst);
		if (node_ctx.action == NODEACT_ADD)
			node_ctx.action = NODEACT_CHANGE;
	}
	if (have_text && type == REPO_MODE_DIR)
		die("invalid dump: directories cannot have text attached");

	/*
	 * Decide on the new content (mark) and mode (node_ctx.type).
	 */
	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");
	} 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);
		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)
			die("invalid dump: adds node without text");
	} else {
		die("invalid dump: Node-path block lacks Node-action");
	}

	/*
	 * Adjust mode to reflect properties.
	 */
	if (have_props) {
		if (!node_ctx.prop_delta)
			node_ctx.type = type;
		if (node_ctx.propLength)
			read_props();
	}

	/*
	 * 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);
}

static void handle_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);
}

void svndump_read(const char *url)
{
	char *val;
	char *t;
	uint32_t active_ctx = DUMP_CTX;
	uint32_t len;

	reset_dump_ctx(url);
	while ((t = buffer_read_line(&input))) {
		val = strchr(t, ':');
		if (!val)
			continue;
		val++;
		if (*val != ' ')
			continue;
		val++;

		/* strlen(key) + 1 */
		switch (val - t - 1) {
		case sizeof("SVN-fs-dump-format-version"):
			if (constcmp(t, "SVN-fs-dump-format-version"))
				continue;
			dump_ctx.version = atoi(val);
			if (dump_ctx.version > 3)
				die("expected svn dump format version <= 3, found %"PRIu32,
				    dump_ctx.version);
			break;
		case sizeof("UUID"):
			if (constcmp(t, "UUID"))
				continue;
			strbuf_reset(&dump_ctx.uuid);
			strbuf_addstr(&dump_ctx.uuid, val);
			break;
		case sizeof("Revision-number"):
			if (constcmp(t, "Revision-number"))
				continue;
			if (active_ctx == NODE_CTX)
				handle_node();
			if (active_ctx != DUMP_CTX)
				handle_revision();
			active_ctx = REV_CTX;
			reset_rev_ctx(atoi(val));
			break;
		case sizeof("Node-path"):
			if (prefixcmp(t, "Node-"))
				continue;
			if (!constcmp(t + strlen("Node-"), "path")) {
				if (active_ctx == NODE_CTX)
					handle_node();
				active_ctx = NODE_CTX;
				reset_node_ctx(val);
				break;
			}
			if (constcmp(t + strlen("Node-"), "kind"))
				continue;
			if (!strcmp(val, "dir"))
				node_ctx.type = REPO_MODE_DIR;
			else if (!strcmp(val, "file"))
				node_ctx.type = REPO_MODE_BLB;
			else
				fprintf(stderr, "Unknown node-kind: %s\n", val);
			break;
		case sizeof("Node-action"):
			if (constcmp(t, "Node-action"))
				continue;
			if (!strcmp(val, "delete")) {
				node_ctx.action = NODEACT_DELETE;
			} else if (!strcmp(val, "add")) {
				node_ctx.action = NODEACT_ADD;
			} else if (!strcmp(val, "change")) {
				node_ctx.action = NODEACT_CHANGE;
			} else if (!strcmp(val, "replace")) {
				node_ctx.action = NODEACT_REPLACE;
			} else {
				fprintf(stderr, "Unknown node-action: %s\n", val);
				node_ctx.action = NODEACT_UNKNOWN;
			}
			break;
		case sizeof("Node-copyfrom-path"):
			if (constcmp(t, "Node-copyfrom-path"))
				continue;
			pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.src, "/", val);
			break;
		case sizeof("Node-copyfrom-rev"):
			if (constcmp(t, "Node-copyfrom-rev"))
				continue;
			node_ctx.srcRev = atoi(val);
			break;
		case sizeof("Text-content-length"):
			if (!constcmp(t, "Text-content-length")) {
				node_ctx.textLength = atoi(val);
				break;
			}
			if (constcmp(t, "Prop-content-length"))
				continue;
			node_ctx.propLength = atoi(val);
			break;
		case sizeof("Text-delta"):
			if (!constcmp(t, "Text-delta")) {
				node_ctx.text_delta = !strcmp(val, "true");
				break;
			}
			if (constcmp(t, "Prop-delta"))
				continue;
			node_ctx.prop_delta = !strcmp(val, "true");
			break;
		case sizeof("Content-length"):
			if (constcmp(t, "Content-length"))
				continue;
			len = atoi(val);
			t = buffer_read_line(&input);
			if (!t)
				die_short_read();
			if (*t)
				die("invalid dump: expected blank line after content length header");
			if (active_ctx == REV_CTX) {
				read_props();
			} else if (active_ctx == NODE_CTX) {
				handle_node();
				active_ctx = REV_CTX;
			} else {
				fprintf(stderr, "Unexpected content length header: %"PRIu32"\n", len);
				if (buffer_skip_bytes(&input, len) != len)
					die_short_read();
			}
		}
	}
	if (buffer_ferror(&input))
		die_short_read();
	if (active_ctx == NODE_CTX)
		handle_node();
	if (active_ctx != DUMP_CTX)
		handle_revision();
}

int svndump_init(const char *filename)
{
	if (buffer_init(&input, filename))
		return error("cannot open %s: %s", filename, strerror(errno));
	repo_init();
	strbuf_init(&dump_ctx.uuid, 4096);
	strbuf_init(&dump_ctx.url, 4096);
	strbuf_init(&rev_ctx.log, 4096);
	strbuf_init(&rev_ctx.author, 4096);
	reset_dump_ctx(NULL);
	reset_rev_ctx(0);
	reset_node_ctx(NULL);
	return 0;
}

void svndump_deinit(void)
{
	repo_reset();
	reset_dump_ctx(NULL);
	reset_rev_ctx(0);
	reset_node_ctx(NULL);
	strbuf_release(&rev_ctx.log);
	if (buffer_deinit(&input))
		fprintf(stderr, "Input error\n");
	if (ferror(stdout))
		fprintf(stderr, "Output error\n");
}

void svndump_reset(void)
{
	buffer_reset(&input);
	repo_reset();
	strbuf_release(&dump_ctx.uuid);
	strbuf_release(&dump_ctx.url);
	strbuf_release(&rev_ctx.log);
	strbuf_release(&rev_ctx.author);
}
Commit	Line	Data
21746aa3 DB	1	/*
	2	* Parse and rearrange a svnadmin dump.
	3	* Create the dump with:
	4	* svnadmin dump --incremental -r<startrev>:<endrev> <repository> >outfile
	5	*
	6	* Licensed under a two-clause BSD-style license.
	7	* See LICENSE for details.
	8	*/
	9
	10	#include "cache.h"
	11	#include "repo_tree.h"
	12	#include "fast_export.h"
	13	#include "line_buffer.h"
21746aa3	14	#include "string_pool.h"
dce33c9c	15	#include "strbuf.h"
21746aa3	16
044ad290 DB	17	/*
	18	* Compare start of string to literal of equal length;
	19	* must be guarded by length test.
	20	*/
	21	#define constcmp(s, ref) memcmp(s, ref, sizeof(ref) - 1)
	22
21746aa3 DB	23	#define NODEACT_REPLACE 4
	24	#define NODEACT_DELETE 3
	25	#define NODEACT_ADD 2
	26	#define NODEACT_CHANGE 1
	27	#define NODEACT_UNKNOWN 0
	28
	29	#define DUMP_CTX 0
	30	#define REV_CTX 1
	31	#define NODE_CTX 2
	32
	33	#define LENGTH_UNKNOWN (~0)
	34	#define DATE_RFC2822_LEN 31
	35
e5e45ca1 JN	36	static struct line_buffer input = LINE_BUFFER_INIT;
e5e45ca1 JN	37
21746aa3	38	static struct {
da3e2174	39	uint32_t action, propLength, textLength, srcRev, type;
21746aa3	40	uint32_t src[REPO_MAX_PATH_DEPTH], dst[REPO_MAX_PATH_DEPTH];
1f05d07c	41	uint32_t text_delta, prop_delta;
21746aa3 DB	42	} node_ctx;
	43
	44	static struct {
7c5817d3	45	uint32_t revision;
21746aa3	46	unsigned long timestamp;
7c5817d3	47	struct strbuf log, author;
21746aa3 DB	48	} rev_ctx;
	49
	50	static struct {
7c5817d3 DB	51	uint32_t version;
7c5817d3 DB	52	struct strbuf uuid, url;
21746aa3 DB	53	} dump_ctx;
21746aa3 DB	54
21746aa3 DB	55	static void reset_node_ctx(char *fname)
	56	{
	57	node_ctx.type = 0;
	58	node_ctx.action = NODEACT_UNKNOWN;
	59	node_ctx.propLength = LENGTH_UNKNOWN;
	60	node_ctx.textLength = LENGTH_UNKNOWN;
	61	node_ctx.src[0] = ~0;
	62	node_ctx.srcRev = 0;
21746aa3	63	pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.dst, "/", fname);
1f05d07c DB	64	node_ctx.text_delta = 0;
1f05d07c DB	65	node_ctx.prop_delta = 0;
21746aa3 DB	66	}
	67
	68	static void reset_rev_ctx(uint32_t revision)
	69	{
	70	rev_ctx.revision = revision;
	71	rev_ctx.timestamp = 0;
dce33c9c	72	strbuf_reset(&rev_ctx.log);
7c5817d3	73	strbuf_reset(&rev_ctx.author);
21746aa3 DB	74	}
21746aa3 DB	75
7c5817d3	76	static void reset_dump_ctx(const char *url)
21746aa3	77	{
7c5817d3 DB	78	strbuf_reset(&dump_ctx.url);
	79	if (url)
	80	strbuf_addstr(&dump_ctx.url, url);
b3e5bce1	81	dump_ctx.version = 1;
7c5817d3	82	strbuf_reset(&dump_ctx.uuid);
21746aa3 DB	83	}
21746aa3 DB	84
044ad290	85	static void handle_property(const struct strbuf *key_buf,
4c3169b0	86	struct strbuf *val,
6b01b676	87	uint32_t *type_set)
2a48afe1	88	{
044ad290 DB	89	const char *key = key_buf->buf;
	90	size_t keylen = key_buf->len;
	91
	92	switch (keylen + 1) {
	93	case sizeof("svn:log"):
	94	if (constcmp(key, "svn:log"))
	95	break;
6b01b676 DB	96	if (!val)
6b01b676 DB	97	die("invalid dump: unsets svn:log");
4c3169b0	98	strbuf_swap(&rev_ctx.log, val);
044ad290 DB	99	break;
	100	case sizeof("svn:author"):
	101	if (constcmp(key, "svn:author"))
	102	break;
4c3169b0 JN	103	if (!val)
	104	strbuf_reset(&rev_ctx.author);
	105	else
	106	strbuf_swap(&rev_ctx.author, val);
044ad290 DB	107	break;
	108	case sizeof("svn:date"):
	109	if (constcmp(key, "svn:date"))
	110	break;
6b01b676 DB	111	if (!val)
6b01b676 DB	112	die("invalid dump: unsets svn:date");
4c3169b0 JN	113	if (parse_date_basic(val->buf, &rev_ctx.timestamp, NULL))
4c3169b0 JN	114	warning("invalid timestamp: %s", val->buf);
044ad290 DB	115	break;
	116	case sizeof("svn:executable"):
	117	case sizeof("svn:special"):
	118	if (keylen == strlen("svn:executable") &&
	119	constcmp(key, "svn:executable"))
	120	break;
	121	if (keylen == strlen("svn:special") &&
	122	constcmp(key, "svn:special"))
	123	break;
6b01b676 DB	124	if (*type_set) {
	125	if (!val)
	126	return;
	127	die("invalid dump: sets type twice");
	128	}
	129	if (!val) {
	130	node_ctx.type = REPO_MODE_BLB;
	131	return;
	132	}
	133	*type_set = 1;
044ad290	134	node_ctx.type = keylen == strlen("svn:executable") ?
6b01b676 DB	135	REPO_MODE_EXE :
6b01b676 DB	136	REPO_MODE_LNK;
2a48afe1	137	}
21746aa3 DB	138	}
21746aa3 DB	139
c9d1c8ba JN	140	static void die_short_read(void)
	141	{
	142	if (buffer_ferror(&input))
	143	die_errno("error reading dump file");
	144	die("invalid dump: unexpected end of file");
	145	}
	146
21746aa3 DB	147	static void read_props(void)
21746aa3 DB	148	{
044ad290	149	static struct strbuf key = STRBUF_INIT;
e7d04ee1	150	static struct strbuf val = STRBUF_INIT;
6263c06d	151	const char *t;
6b01b676 DB	152	/*
	153	* NEEDSWORK: to support simple mode changes like
	154	* K 11
	155	* svn:special
	156	* V 1
	157	* *
	158	* D 14
	159	* svn:executable
	160	* we keep track of whether a mode has been set and reset to
	161	* plain file only if not. We should be keeping track of the
	162	* symlink and executable bits separately instead.
	163	*/
	164	uint32_t type_set = 0;
e5e45ca1	165	while ((t = buffer_read_line(&input)) && strcmp(t, "PROPS-END")) {
6263c06d	166	uint32_t len;
6263c06d	167	const char type = t[0];
c9d1c8ba	168	int ch;
6263c06d JN	169
	170	if (!type \|\| t[1] != ' ')
	171	die("invalid property line: %s\n", t);
	172	len = atoi(&t[2]);
e7d04ee1 JN	173	strbuf_reset(&val);
	174	buffer_read_binary(&input, &val, len);
	175	if (val.len < len)
c9d1c8ba JN	176	die_short_read();
	177
	178	/* Discard trailing newline. */
	179	ch = buffer_read_char(&input);
	180	if (ch == EOF)
	181	die_short_read();
	182	if (ch != '\n')
e7d04ee1	183	die("invalid dump: expected newline after %s", val.buf);
6263c06d JN	184
	185	switch (type) {
	186	case 'K':
e7d04ee1 JN	187	strbuf_swap(&key, &val);
e7d04ee1 JN	188	continue;
6b01b676	189	case 'D':
4c3169b0	190	handle_property(&val, NULL, &type_set);
e7d04ee1	191	continue;
6263c06d	192	case 'V':
4c3169b0	193	handle_property(&key, &val, &type_set);
044ad290	194	strbuf_reset(&key);
6263c06d JN	195	continue;
	196	default:
	197	die("invalid property line: %s\n", t);
21746aa3 DB	198	}
	199	}
	200	}
	201
	202	static void handle_node(void)
	203	{
1c7bb316 JN	204	uint32_t mark = 0;
1c7bb316 JN	205	const uint32_t type = node_ctx.type;
d6e81a03	206	const int have_props = node_ctx.propLength != LENGTH_UNKNOWN;
5a38b186	207	const int have_text = node_ctx.textLength != LENGTH_UNKNOWN;
21746aa3	208
6b01b676 DB	209	if (node_ctx.text_delta)
6b01b676 DB	210	die("text deltas not supported");
5a38b186	211	if (have_text)
462e1f51	212	mark = next_blob_mark();
21746aa3	213	if (node_ctx.action == NODEACT_DELETE) {
5a38b186	214	if (have_text \|\| have_props \|\| node_ctx.srcRev)
5af8fae2 JN	215	die("invalid dump: deletion node has "
5af8fae2 JN	216	"copyfrom info, text, or properties");
9e113988 MW	217	repo_delete(node_ctx.dst);
9e113988 MW	218	return;
5af8fae2	219	}
6ee4a9be	220	if (node_ctx.action == NODEACT_REPLACE) {
21746aa3	221	repo_delete(node_ctx.dst);
6ee4a9be JN	222	node_ctx.action = NODEACT_ADD;
6ee4a9be JN	223	}
1c7bb316 JN	224	if (node_ctx.srcRev) {
1c7bb316 JN	225	repo_copy(node_ctx.srcRev, node_ctx.src, node_ctx.dst);
414e569e JN	226	if (node_ctx.action == NODEACT_ADD)
414e569e JN	227	node_ctx.action = NODEACT_CHANGE;
1c7bb316	228	}
5a38b186	229	if (have_text && type == REPO_MODE_DIR)
462e1f51	230	die("invalid dump: directories cannot have text attached");
5a38b186 JN	231
	232	/*
	233	* Decide on the new content (mark) and mode (node_ctx.type).
	234	*/
9e8c5321 JN	235	if (node_ctx.action == NODEACT_CHANGE && !~*node_ctx.dst) {
	236	if (type != REPO_MODE_DIR)
	237	die("invalid dump: root of tree is not a regular file");
	238	} else if (node_ctx.action == NODEACT_CHANGE) {
5a38b186 JN	239	uint32_t mode;
	240	if (!have_text)
	241	mark = repo_read_path(node_ctx.dst);
e75316de	242	mode = repo_read_mode(node_ctx.dst);
c7dbf35e JN	243	if (mode == REPO_MODE_DIR && type != REPO_MODE_DIR)
	244	die("invalid dump: cannot modify a directory into a file");
	245	if (mode != REPO_MODE_DIR && type == REPO_MODE_DIR)
	246	die("invalid dump: cannot modify a file into a directory");
	247	node_ctx.type = mode;
21746aa3	248	} else if (node_ctx.action == NODEACT_ADD) {
5a38b186	249	if (!have_text && type != REPO_MODE_DIR)
c7dbf35e	250	die("invalid dump: adds node without text");
c7dbf35e	251	} else {
414e569e	252	die("invalid dump: Node-path block lacks Node-action");
21746aa3	253	}
5a38b186 JN	254
	255	/*
	256	* Adjust mode to reflect properties.
	257	*/
1c7bb316	258	if (have_props) {
6b01b676 DB	259	if (!node_ctx.prop_delta)
6b01b676 DB	260	node_ctx.type = type;
1c7bb316 JN	261	if (node_ctx.propLength)
1c7bb316 JN	262	read_props();
21746aa3	263	}
5a38b186 JN	264
	265	/*
	266	* Save the result.
	267	*/
	268	repo_add(node_ctx.dst, node_ctx.type, mark);
	269	if (have_text)
a62bbf8f JN	270	fast_export_blob(node_ctx.type, mark,
a62bbf8f JN	271	node_ctx.textLength, &input);
21746aa3 DB	272	}
	273
	274	static void handle_revision(void)
	275	{
	276	if (rev_ctx.revision)
7c5817d3	277	repo_commit(rev_ctx.revision, rev_ctx.author.buf,
195b7ca6	278	&rev_ctx.log, dump_ctx.uuid.buf, dump_ctx.url.buf,
7c5817d3	279	rev_ctx.timestamp);
21746aa3 DB	280	}
	281
	282	void svndump_read(const char *url)
	283	{
	284	char *val;
	285	char *t;
	286	uint32_t active_ctx = DUMP_CTX;
	287	uint32_t len;
21746aa3	288
7c5817d3	289	reset_dump_ctx(url);
e5e45ca1	290	while ((t = buffer_read_line(&input))) {
f1602054	291	val = strchr(t, ':');
21746aa3 DB	292	if (!val)
21746aa3 DB	293	continue;
f1602054 DB	294	val++;
	295	if (*val != ' ')
	296	continue;
	297	val++;
21746aa3	298
90c0a3cf DB	299	/* strlen(key) + 1 */
	300	switch (val - t - 1) {
	301	case sizeof("SVN-fs-dump-format-version"):
	302	if (constcmp(t, "SVN-fs-dump-format-version"))
	303	continue;
b3e5bce1	304	dump_ctx.version = atoi(val);
1f05d07c	305	if (dump_ctx.version > 3)
a62bbf8f	306	die("expected svn dump format version <= 3, found %"PRIu32,
b3e5bce1	307	dump_ctx.version);
90c0a3cf DB	308	break;
	309	case sizeof("UUID"):
	310	if (constcmp(t, "UUID"))
	311	continue;
7c5817d3 DB	312	strbuf_reset(&dump_ctx.uuid);
7c5817d3 DB	313	strbuf_addstr(&dump_ctx.uuid, val);
90c0a3cf DB	314	break;
	315	case sizeof("Revision-number"):
	316	if (constcmp(t, "Revision-number"))
	317	continue;
21746aa3 DB	318	if (active_ctx == NODE_CTX)
	319	handle_node();
	320	if (active_ctx != DUMP_CTX)
	321	handle_revision();
	322	active_ctx = REV_CTX;
	323	reset_rev_ctx(atoi(val));
90c0a3cf DB	324	break;
	325	case sizeof("Node-path"):
	326	if (prefixcmp(t, "Node-"))
	327	continue;
	328	if (!constcmp(t + strlen("Node-"), "path")) {
	329	if (active_ctx == NODE_CTX)
	330	handle_node();
	331	active_ctx = NODE_CTX;
	332	reset_node_ctx(val);
	333	break;
	334	}
	335	if (constcmp(t + strlen("Node-"), "kind"))
	336	continue;
21746aa3 DB	337	if (!strcmp(val, "dir"))
	338	node_ctx.type = REPO_MODE_DIR;
	339	else if (!strcmp(val, "file"))
	340	node_ctx.type = REPO_MODE_BLB;
	341	else
	342	fprintf(stderr, "Unknown node-kind: %s\n", val);
90c0a3cf DB	343	break;
	344	case sizeof("Node-action"):
	345	if (constcmp(t, "Node-action"))
	346	continue;
21746aa3 DB	347	if (!strcmp(val, "delete")) {
	348	node_ctx.action = NODEACT_DELETE;
	349	} else if (!strcmp(val, "add")) {
	350	node_ctx.action = NODEACT_ADD;
	351	} else if (!strcmp(val, "change")) {
	352	node_ctx.action = NODEACT_CHANGE;
	353	} else if (!strcmp(val, "replace")) {
	354	node_ctx.action = NODEACT_REPLACE;
	355	} else {
	356	fprintf(stderr, "Unknown node-action: %s\n", val);
	357	node_ctx.action = NODEACT_UNKNOWN;
	358	}
90c0a3cf DB	359	break;
	360	case sizeof("Node-copyfrom-path"):
	361	if (constcmp(t, "Node-copyfrom-path"))
	362	continue;
21746aa3	363	pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.src, "/", val);
90c0a3cf DB	364	break;
	365	case sizeof("Node-copyfrom-rev"):
	366	if (constcmp(t, "Node-copyfrom-rev"))
	367	continue;
21746aa3	368	node_ctx.srcRev = atoi(val);
90c0a3cf DB	369	break;
	370	case sizeof("Text-content-length"):
	371	if (!constcmp(t, "Text-content-length")) {
	372	node_ctx.textLength = atoi(val);
	373	break;
	374	}
	375	if (constcmp(t, "Prop-content-length"))
	376	continue;
21746aa3	377	node_ctx.propLength = atoi(val);
90c0a3cf DB	378	break;
	379	case sizeof("Text-delta"):
	380	if (!constcmp(t, "Text-delta")) {
	381	node_ctx.text_delta = !strcmp(val, "true");
	382	break;
	383	}
	384	if (constcmp(t, "Prop-delta"))
	385	continue;
1f05d07c	386	node_ctx.prop_delta = !strcmp(val, "true");
90c0a3cf DB	387	break;
	388	case sizeof("Content-length"):
	389	if (constcmp(t, "Content-length"))
	390	continue;
21746aa3	391	len = atoi(val);
c9d1c8ba JN	392	t = buffer_read_line(&input);
	393	if (!t)
	394	die_short_read();
	395	if (*t)
	396	die("invalid dump: expected blank line after content length header");
21746aa3 DB	397	if (active_ctx == REV_CTX) {
	398	read_props();
	399	} else if (active_ctx == NODE_CTX) {
	400	handle_node();
	401	active_ctx = REV_CTX;
	402	} else {
5418d96d	403	fprintf(stderr, "Unexpected content length header: %"PRIu32"\n", len);
c9d1c8ba JN	404	if (buffer_skip_bytes(&input, len) != len)
c9d1c8ba JN	405	die_short_read();
21746aa3 DB	406	}
	407	}
	408	}
c9d1c8ba JN	409	if (buffer_ferror(&input))
c9d1c8ba JN	410	die_short_read();
21746aa3 DB	411	if (active_ctx == NODE_CTX)
	412	handle_node();
	413	if (active_ctx != DUMP_CTX)
	414	handle_revision();
	415	}
	416
5c28a8b0	417	int svndump_init(const char *filename)
21746aa3	418	{
a62bbf8f	419	if (buffer_init(&input, filename))
5c28a8b0	420	return error("cannot open %s: %s", filename, strerror(errno));
21746aa3	421	repo_init();
7c5817d3 DB	422	strbuf_init(&dump_ctx.uuid, 4096);
7c5817d3 DB	423	strbuf_init(&dump_ctx.url, 4096);
dce33c9c	424	strbuf_init(&rev_ctx.log, 4096);
7c5817d3 DB	425	strbuf_init(&rev_ctx.author, 4096);
7c5817d3 DB	426	reset_dump_ctx(NULL);
21746aa3 DB	427	reset_rev_ctx(0);
21746aa3 DB	428	reset_node_ctx(NULL);
5c28a8b0	429	return 0;
21746aa3 DB	430	}
	431
	432	void svndump_deinit(void)
	433	{
21746aa3	434	repo_reset();
7c5817d3	435	reset_dump_ctx(NULL);
21746aa3 DB	436	reset_rev_ctx(0);
21746aa3 DB	437	reset_node_ctx(NULL);
dce33c9c	438	strbuf_release(&rev_ctx.log);
e5e45ca1	439	if (buffer_deinit(&input))
21746aa3 DB	440	fprintf(stderr, "Input error\n");
	441	if (ferror(stdout))
	442	fprintf(stderr, "Output error\n");
	443	}
	444
	445	void svndump_reset(void)
	446	{
e5e45ca1	447	buffer_reset(&input);
21746aa3	448	repo_reset();
7c5817d3 DB	449	strbuf_release(&dump_ctx.uuid);
	450	strbuf_release(&dump_ctx.url);
	451	strbuf_release(&rev_ctx.log);
	452	strbuf_release(&rev_ctx.author);
21746aa3	453	}