vcs-svn/svndump.c - jrn/git - Git at Google

 /*
  * 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 "obj_pool.h"
 #include "string_pool.h"

 #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

 /* Create memory pool for log messages */
 obj_pool_gen(log, char, 4096)

 static struct line_buffer input = LINE_BUFFER_INIT;

 static char *log_copy(uint32_t length, const char *log)
 {
 	char *buffer;
 	log_free(log_pool.size);
 	buffer = log_pointer(log_alloc(length));
 	strncpy(buffer, log, length);
 	return buffer;
 }

 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, author;
 	unsigned long timestamp;
 	char *log;
 } rev_ctx;

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

 static struct {
 	uint32_t svn_log, svn_author, svn_date, svn_executable, svn_special, uuid,
 		revision_number, node_path, node_kind, node_action,
 		node_copyfrom_path, node_copyfrom_rev, text_content_length,
 		prop_content_length, content_length, svn_fs_dump_format_version,
 		/* version 3 format */
 		text_delta, prop_delta;
 } keys;

 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;
 	rev_ctx.log = NULL;
 	rev_ctx.author = ~0;
 }

 static void reset_dump_ctx(uint32_t url)
 {
 	dump_ctx.url = url;
 	dump_ctx.version = 1;
 	dump_ctx.uuid = ~0;
 }

 static void init_keys(void)
 {
 	keys.svn_log = pool_intern("svn:log");
 	keys.svn_author = pool_intern("svn:author");
 	keys.svn_date = pool_intern("svn:date");
 	keys.svn_executable = pool_intern("svn:executable");
 	keys.svn_special = pool_intern("svn:special");
 	keys.uuid = pool_intern("UUID");
 	keys.revision_number = pool_intern("Revision-number");
 	keys.node_path = pool_intern("Node-path");
 	keys.node_kind = pool_intern("Node-kind");
 	keys.node_action = pool_intern("Node-action");
 	keys.node_copyfrom_path = pool_intern("Node-copyfrom-path");
 	keys.node_copyfrom_rev = pool_intern("Node-copyfrom-rev");
 	keys.text_content_length = pool_intern("Text-content-length");
 	keys.prop_content_length = pool_intern("Prop-content-length");
 	keys.content_length = pool_intern("Content-length");
 	keys.svn_fs_dump_format_version = pool_intern("SVN-fs-dump-format-version");
 	/* version 3 format (Subversion 1.1.0) */
 	keys.text_delta = pool_intern("Text-delta");
 	keys.prop_delta = pool_intern("Prop-delta");
 }

 static void handle_property(uint32_t key, const char *val, uint32_t len,
 				uint32_t *type_set)
 {
 	if (key == keys.svn_log) {
 		if (!val)
 			die("invalid dump: unsets svn:log");
 		/* Value length excludes terminating nul. */
 		rev_ctx.log = log_copy(len + 1, val);
 	} else if (key == keys.svn_author) {
 		rev_ctx.author = pool_intern(val);
 	} else if (key == keys.svn_date) {
 		if (!val)
 			die("invalid dump: unsets svn:date");
 		if (parse_date_basic(val, &rev_ctx.timestamp, NULL))
 			warning("invalid timestamp: %s", val);
 	} else if (key == keys.svn_executable || key == keys.svn_special) {
 		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 = key == keys.svn_executable ?
 				REPO_MODE_EXE :
 				REPO_MODE_LNK;
 	}
 }

 static void read_props(void)
 {
 	uint32_t key = ~0;
 	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 *val;
 		const char type = t[0];

 		if (!type || t[1] != ' ')
 			die("invalid property line: %s\n", t);
 		len = atoi(&t[2]);
 		val = buffer_read_string(&input, len);
 		buffer_skip_bytes(&input, 1);	/* Discard trailing newline. */

 		switch (type) {
 		case 'K':
 			key = pool_intern(val);
 			continue;
 		case 'D':
 			key = pool_intern(val);
 			val = NULL;
 			len = 0;
 			/* fall through */
 		case 'V':
 			handle_property(key, val, len, &type_set);
 			key = ~0;
 			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;

 	if (node_ctx.text_delta)
 		die("text deltas not supported");
 	if (node_ctx.textLength != LENGTH_UNKNOWN)
 		mark = next_blob_mark();
 	if (node_ctx.action == NODEACT_DELETE) {
 		if (mark || have_props || node_ctx.srcRev)
 			die("invalid dump: deletion node has "
 				"copyfrom info, text, or properties");
 		return repo_delete(node_ctx.dst);
 	}
 	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 (mark && type == REPO_MODE_DIR)
 		die("invalid dump: directories cannot have text attached");
 	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 = repo_modify_path(node_ctx.dst, 0, mark);
 		if (!mode)
 			die("invalid dump: path to be modified is missing");
 		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 (!mark && type != REPO_MODE_DIR)
 			die("invalid dump: adds node without text");
 		repo_add(node_ctx.dst, type, mark);
 	} else {
 		die("invalid dump: Node-path block lacks Node-action");
 	}
 	if (have_props) {
 		const uint32_t old_mode = node_ctx.type;
 		if (!node_ctx.prop_delta)
 			node_ctx.type = type;
 		if (node_ctx.propLength)
 			read_props();
 		if (node_ctx.type != old_mode)
 			repo_modify_path(node_ctx.dst, node_ctx.type, mark);
 	}
 	if (mark)
 		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, rev_ctx.log,
 			dump_ctx.uuid, dump_ctx.url, rev_ctx.timestamp);
 }

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

 	reset_dump_ctx(pool_intern(url));
 	while ((t = buffer_read_line(&input))) {
 		val = strstr(t, ": ");
 		if (!val)
 			continue;
 		*val++ = '\0';
 		*val++ = '\0';
 		key = pool_intern(t);

 		if (key == keys.svn_fs_dump_format_version) {
 			dump_ctx.version = atoi(val);
 			if (dump_ctx.version > 3)
 				die("expected svn dump format version <= 3, found %"PRIu32,
 				    dump_ctx.version);
 		} else if (key == keys.uuid) {
 			dump_ctx.uuid = pool_intern(val);
 		} else if (key == keys.revision_number) {
 			if (active_ctx == NODE_CTX)
 				handle_node();
 			if (active_ctx != DUMP_CTX)
 				handle_revision();
 			active_ctx = REV_CTX;
 			reset_rev_ctx(atoi(val));
 		} else if (key == keys.node_path) {
 			if (active_ctx == NODE_CTX)
 				handle_node();
 			active_ctx = NODE_CTX;
 			reset_node_ctx(val);
 		} else if (key == keys.node_kind) {
 			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);
 		} else if (key == keys.node_action) {
 			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;
 			}
 		} else if (key == keys.node_copyfrom_path) {
 			pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.src, "/", val);
 		} else if (key == keys.node_copyfrom_rev) {
 			node_ctx.srcRev = atoi(val);
 		} else if (key == keys.text_content_length) {
 			node_ctx.textLength = atoi(val);
 		} else if (key == keys.prop_content_length) {
 			node_ctx.propLength = atoi(val);
 		} else if (key == keys.text_delta) {
 			node_ctx.text_delta = !strcmp(val, "true");
 		} else if (key == keys.prop_delta) {
 			node_ctx.prop_delta = !strcmp(val, "true");
 		} else if (key == keys.content_length) {
 			len = atoi(val);
 			buffer_read_line(&input);
 			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);
 				buffer_skip_bytes(&input, len);
 			}
 		}
 	}
 	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();
 	reset_dump_ctx(~0);
 	reset_rev_ctx(0);
 	reset_node_ctx(NULL);
 	init_keys();
 	return 0;
 }

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

 void svndump_reset(void)
 {
 	log_reset();
 	buffer_reset(&input);
 	repo_reset();
 	reset_dump_ctx(~0);
 	reset_rev_ctx(0);
 	reset_node_ctx(NULL);
 }
	/*
	* 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 "obj_pool.h"
	#include "string_pool.h"

	#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

	/* Create memory pool for log messages */
	obj_pool_gen(log, char, 4096)

	static struct line_buffer input = LINE_BUFFER_INIT;

	static char log_copy(uint32_t length, const char log)
	{
	char *buffer;
	log_free(log_pool.size);
	buffer = log_pointer(log_alloc(length));
	strncpy(buffer, log, length);
	return buffer;
	}

	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, author;
	unsigned long timestamp;
	char *log;
	} rev_ctx;

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

	static struct {
	uint32_t svn_log, svn_author, svn_date, svn_executable, svn_special, uuid,
	revision_number, node_path, node_kind, node_action,
	node_copyfrom_path, node_copyfrom_rev, text_content_length,
	prop_content_length, content_length, svn_fs_dump_format_version,
	/* version 3 format */
	text_delta, prop_delta;
	} keys;

	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;
	rev_ctx.log = NULL;
	rev_ctx.author = ~0;
	}

	static void reset_dump_ctx(uint32_t url)
	{
	dump_ctx.url = url;
	dump_ctx.version = 1;
	dump_ctx.uuid = ~0;
	}

	static void init_keys(void)
	{
	keys.svn_log = pool_intern("svn:log");
	keys.svn_author = pool_intern("svn:author");
	keys.svn_date = pool_intern("svn:date");
	keys.svn_executable = pool_intern("svn:executable");
	keys.svn_special = pool_intern("svn:special");
	keys.uuid = pool_intern("UUID");
	keys.revision_number = pool_intern("Revision-number");
	keys.node_path = pool_intern("Node-path");
	keys.node_kind = pool_intern("Node-kind");
	keys.node_action = pool_intern("Node-action");
	keys.node_copyfrom_path = pool_intern("Node-copyfrom-path");
	keys.node_copyfrom_rev = pool_intern("Node-copyfrom-rev");
	keys.text_content_length = pool_intern("Text-content-length");
	keys.prop_content_length = pool_intern("Prop-content-length");
	keys.content_length = pool_intern("Content-length");
	keys.svn_fs_dump_format_version = pool_intern("SVN-fs-dump-format-version");
	/* version 3 format (Subversion 1.1.0) */
	keys.text_delta = pool_intern("Text-delta");
	keys.prop_delta = pool_intern("Prop-delta");
	}

	static void handle_property(uint32_t key, const char *val, uint32_t len,
	uint32_t *type_set)
	{
	if (key == keys.svn_log) {
	if (!val)
	die("invalid dump: unsets svn:log");
	/* Value length excludes terminating nul. */
	rev_ctx.log = log_copy(len + 1, val);
	} else if (key == keys.svn_author) {
	rev_ctx.author = pool_intern(val);
	} else if (key == keys.svn_date) {
	if (!val)
	die("invalid dump: unsets svn:date");
	if (parse_date_basic(val, &rev_ctx.timestamp, NULL))
	warning("invalid timestamp: %s", val);
	} else if (key == keys.svn_executable \|\| key == keys.svn_special) {
	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 = key == keys.svn_executable ?
	REPO_MODE_EXE :
	REPO_MODE_LNK;
	}
	}

	static void read_props(void)
	{
	uint32_t key = ~0;
	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 *val;
	const char type = t[0];

	if (!type \|\| t[1] != ' ')
	die("invalid property line: %s\n", t);
	len = atoi(&t[2]);
	val = buffer_read_string(&input, len);
	buffer_skip_bytes(&input, 1); /* Discard trailing newline. */

	switch (type) {
	case 'K':
	key = pool_intern(val);
	continue;
	case 'D':
	key = pool_intern(val);
	val = NULL;
	len = 0;
	/* fall through */
	case 'V':
	handle_property(key, val, len, &type_set);
	key = ~0;
	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;

	if (node_ctx.text_delta)
	die("text deltas not supported");
	if (node_ctx.textLength != LENGTH_UNKNOWN)
	mark = next_blob_mark();
	if (node_ctx.action == NODEACT_DELETE) {
	if (mark \|\| have_props \|\| node_ctx.srcRev)
	die("invalid dump: deletion node has "
	"copyfrom info, text, or properties");
	return repo_delete(node_ctx.dst);
	}
	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 (mark && type == REPO_MODE_DIR)
	die("invalid dump: directories cannot have text attached");
	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 = repo_modify_path(node_ctx.dst, 0, mark);
	if (!mode)
	die("invalid dump: path to be modified is missing");
	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 (!mark && type != REPO_MODE_DIR)
	die("invalid dump: adds node without text");
	repo_add(node_ctx.dst, type, mark);
	} else {
	die("invalid dump: Node-path block lacks Node-action");
	}
	if (have_props) {
	const uint32_t old_mode = node_ctx.type;
	if (!node_ctx.prop_delta)
	node_ctx.type = type;
	if (node_ctx.propLength)
	read_props();
	if (node_ctx.type != old_mode)
	repo_modify_path(node_ctx.dst, node_ctx.type, mark);
	}
	if (mark)
	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, rev_ctx.log,
	dump_ctx.uuid, dump_ctx.url, rev_ctx.timestamp);
	}

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

	reset_dump_ctx(pool_intern(url));
	while ((t = buffer_read_line(&input))) {
	val = strstr(t, ": ");
	if (!val)
	continue;
	*val++ = '\0';
	*val++ = '\0';
	key = pool_intern(t);

	if (key == keys.svn_fs_dump_format_version) {
	dump_ctx.version = atoi(val);
	if (dump_ctx.version > 3)
	die("expected svn dump format version <= 3, found %"PRIu32,
	dump_ctx.version);
	} else if (key == keys.uuid) {
	dump_ctx.uuid = pool_intern(val);
	} else if (key == keys.revision_number) {
	if (active_ctx == NODE_CTX)
	handle_node();
	if (active_ctx != DUMP_CTX)
	handle_revision();
	active_ctx = REV_CTX;
	reset_rev_ctx(atoi(val));
	} else if (key == keys.node_path) {
	if (active_ctx == NODE_CTX)
	handle_node();
	active_ctx = NODE_CTX;
	reset_node_ctx(val);
	} else if (key == keys.node_kind) {
	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);
	} else if (key == keys.node_action) {
	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;
	}
	} else if (key == keys.node_copyfrom_path) {
	pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.src, "/", val);
	} else if (key == keys.node_copyfrom_rev) {
	node_ctx.srcRev = atoi(val);
	} else if (key == keys.text_content_length) {
	node_ctx.textLength = atoi(val);
	} else if (key == keys.prop_content_length) {
	node_ctx.propLength = atoi(val);
	} else if (key == keys.text_delta) {
	node_ctx.text_delta = !strcmp(val, "true");
	} else if (key == keys.prop_delta) {
	node_ctx.prop_delta = !strcmp(val, "true");
	} else if (key == keys.content_length) {
	len = atoi(val);
	buffer_read_line(&input);
	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);
	buffer_skip_bytes(&input, len);
	}
	}
	}
	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();
	reset_dump_ctx(~0);
	reset_rev_ctx(0);
	reset_node_ctx(NULL);
	init_keys();
	return 0;
	}

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

	void svndump_reset(void)
	{
	log_reset();
	buffer_reset(&input);
	repo_reset();
	reset_dump_ctx(~0);
	reset_rev_ctx(0);
	reset_node_ctx(NULL);
	}