Merge branch 'svn-fe' of git://repo.or.cz/git/jrn

* 'svn-fe' of git://repo.or.cz/git/jrn:
  vcs-svn: use strchr to find RFC822 delimiter
  vcs-svn: implement perfect hash for top-level keys
  vcs-svn: implement perfect hash for node-prop keys
  vcs-svn: use strbuf for author, UUID, and URL
  vcs-svn: use strbuf for revision log
  vcs-svn: improve reporting of input errors
  vcs-svn: make buffer_copy_bytes return length read
  vcs-svn: make buffer_skip_bytes return length read
  vcs-svn: improve support for reading large files
  vcs-svn: allow input errors to be detected promptly
  vcs-svn: simplify repo_modify_path and repo_copy
  vcs-svn: handle_node: use repo_read_path
  vcs-svn: introduce repo_read_path to check the content at a path

8 files changed, 265 insertions, 172 deletions

diff --git a/vcs-svn/fast_export.c b/vcs-svn/fast_export.c
index 260cf50e7..a4d4d9993 100644
--- a/vcs-svn/fast_export.c
+++ b/vcs-svn/fast_export.c
@@ -31,24 +31,24 @@ void fast_export_modify(uint32_t depth, uint32_t *path, uint32_t mode,
 }
 
 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,
+void fast_export_commit(uint32_t revision, const char *author, char *log,
+			const char *uuid, const char *url,
 			unsigned long timestamp)
 {
 	if (!log)
 		log = "";
-	if (~uuid && ~url) {
+	if (*uuid && *url) {
 		snprintf(gitsvnline, MAX_GITSVN_LINE_LEN,
 				"\n\ngit-svn-id: %s@%"PRIu32" %s\n",
-				 pool_fetch(url), revision, pool_fetch(uuid));
+				 url, revision, 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);
+		   *author ? author : "nobody",
+		   *author ? author : "nobody",
+		   *uuid ? uuid : "local", timestamp);
 	printf("data %"PRIu32"\n%s%s\n",
 		   (uint32_t) (strlen(log) + strlen(gitsvnline)),
 		   log, gitsvnline);
@@ -63,14 +63,23 @@ void fast_export_commit(uint32_t revision, uint32_t author, char *log,
 	printf("progress Imported commit %"PRIu32".\n\n", revision);
 }
 
+static void die_short_read(struct line_buffer *input)
+{
+	if (buffer_ferror(input))
+		die_errno("error reading dump file");
+	die("invalid dump: unexpected end of file");
+}
+
 void fast_export_blob(uint32_t mode, uint32_t mark, uint32_t len, struct line_buffer *input)
 {
 	if (mode == REPO_MODE_LNK) {
 		/* svn symlink blobs start with "link " */
-		buffer_skip_bytes(input, 5);
 		len -= 5;
+		if (buffer_skip_bytes(input, 5) != 5)
+			die_short_read(input);
 	}
 	printf("blob\nmark :%"PRIu32"\ndata %"PRIu32"\n", mark, len);
-	buffer_copy_bytes(input, len);
+	if (buffer_copy_bytes(input, len) != len)
+		die_short_read(input);
 	fputc('\n', stdout);
 }
diff --git a/vcs-svn/fast_export.h b/vcs-svn/fast_export.h
index 054e7d5eb..05cf97f3a 100644
--- a/vcs-svn/fast_export.h
+++ b/vcs-svn/fast_export.h
@@ -6,8 +6,9 @@
 void fast_export_delete(uint32_t depth, uint32_t *path);
 void fast_export_modify(uint32_t depth, uint32_t *path, uint32_t mode,
 			uint32_t mark);
-void fast_export_commit(uint32_t revision, uint32_t author, char *log,
-			uint32_t uuid, uint32_t url, unsigned long timestamp);
+void fast_export_commit(uint32_t revision, const char *author, char *log,
+			const char *uuid, const char *url,
+			unsigned long timestamp);
 void fast_export_blob(uint32_t mode, uint32_t mark, uint32_t len,
 		      struct line_buffer *input);
 
diff --git a/vcs-svn/line_buffer.c b/vcs-svn/line_buffer.c
index aedf105b7..33e733a04 100644
--- a/vcs-svn/line_buffer.c
+++ b/vcs-svn/line_buffer.c
@@ -59,6 +59,11 @@ long buffer_tmpfile_prepare_to_read(struct line_buffer *buf)
 	return pos;
 }
 
+int buffer_ferror(struct line_buffer *buf)
+{
+	return ferror(buf->infile);
+}
+
 int buffer_read_char(struct line_buffer *buf)
 {
 	return fgetc(buf->infile);
@@ -99,31 +104,32 @@ void buffer_read_binary(struct line_buffer *buf,
 	strbuf_fread(sb, size, buf->infile);
 }
 
-void buffer_copy_bytes(struct line_buffer *buf, uint32_t len)
+off_t buffer_copy_bytes(struct line_buffer *buf, off_t nbytes)
 {
 	char byte_buffer[COPY_BUFFER_LEN];
-	uint32_t in;
-	while (len > 0 && !feof(buf->infile) && !ferror(buf->infile)) {
-		in = len < COPY_BUFFER_LEN ? len : COPY_BUFFER_LEN;
+	off_t done = 0;
+	while (done < nbytes && !feof(buf->infile) && !ferror(buf->infile)) {
+		off_t len = nbytes - done;
+		size_t in = len < COPY_BUFFER_LEN ? len : COPY_BUFFER_LEN;
 		in = fread(byte_buffer, 1, in, buf->infile);
-		len -= in;
+		done += in;
 		fwrite(byte_buffer, 1, in, stdout);
-		if (ferror(stdout)) {
-			buffer_skip_bytes(buf, len);
-			return;
-		}
+		if (ferror(stdout))
+			return done + buffer_skip_bytes(buf, nbytes - done);
 	}
+	return done;
 }
 
-void buffer_skip_bytes(struct line_buffer *buf, uint32_t len)
+off_t buffer_skip_bytes(struct line_buffer *buf, off_t nbytes)
 {
 	char byte_buffer[COPY_BUFFER_LEN];
-	uint32_t in;
-	while (len > 0 && !feof(buf->infile) && !ferror(buf->infile)) {
-		in = len < COPY_BUFFER_LEN ? len : COPY_BUFFER_LEN;
-		in = fread(byte_buffer, 1, in, buf->infile);
-		len -= in;
+	off_t done = 0;
+	while (done < nbytes && !feof(buf->infile) && !ferror(buf->infile)) {
+		off_t len = nbytes - done;
+		size_t in = len < COPY_BUFFER_LEN ? len : COPY_BUFFER_LEN;
+		done += fread(byte_buffer, 1, in, buf->infile);
 	}
+	return done;
 }
 
 void buffer_reset(struct line_buffer *buf)
diff --git a/vcs-svn/line_buffer.h b/vcs-svn/line_buffer.h
index 96ce966a2..f5c468afa 100644
--- a/vcs-svn/line_buffer.h
+++ b/vcs-svn/line_buffer.h
@@ -21,11 +21,13 @@ int buffer_tmpfile_init(struct line_buffer *buf);
 FILE *buffer_tmpfile_rewind(struct line_buffer *buf);	/* prepare to write. */
 long buffer_tmpfile_prepare_to_read(struct line_buffer *buf);
 
+int buffer_ferror(struct line_buffer *buf);
 char *buffer_read_line(struct line_buffer *buf);
 char *buffer_read_string(struct line_buffer *buf, uint32_t len);
 int buffer_read_char(struct line_buffer *buf);
 void buffer_read_binary(struct line_buffer *buf, struct strbuf *sb, uint32_t len);
-void buffer_copy_bytes(struct line_buffer *buf, uint32_t len);
-void buffer_skip_bytes(struct line_buffer *buf, uint32_t len);
+/* Returns number of bytes read (not necessarily written). */
+off_t buffer_copy_bytes(struct line_buffer *buf, off_t len);
+off_t buffer_skip_bytes(struct line_buffer *buf, off_t len);
 
 #endif
diff --git a/vcs-svn/line_buffer.txt b/vcs-svn/line_buffer.txt
index e89cc41d5..4ef0755cf 100644
--- a/vcs-svn/line_buffer.txt
+++ b/vcs-svn/line_buffer.txt
@@ -76,7 +76,8 @@ Functions
 
 `buffer_skip_bytes`::
 	Discards `len` bytes from the input stream (stopping early
-	if necessary because of an error or eof).
+	if necessary because of an error or eof).  Return value is
+	the number of bytes successfully read.
 
 `buffer_reset`::
 	Deallocates non-static buffers.
diff --git a/vcs-svn/repo_tree.c b/vcs-svn/repo_tree.c
index 207ffc3a8..632dbd873 100644
--- a/vcs-svn/repo_tree.c
+++ b/vcs-svn/repo_tree.c
@@ -87,7 +87,8 @@ static struct repo_dir *repo_clone_dir(struct repo_dir *orig_dir)
 	return dir_pointer(new_o);
 }
 
-static struct repo_dirent *repo_read_dirent(uint32_t revision, uint32_t *path)
+static struct repo_dirent *repo_read_dirent(uint32_t revision,
+					    const uint32_t *path)
 {
 	uint32_t name = 0;
 	struct repo_dirent *key = dent_pointer(dent_alloc(1));
@@ -105,7 +106,7 @@ static struct repo_dirent *repo_read_dirent(uint32_t revision, uint32_t *path)
 	return dent;
 }
 
-static void repo_write_dirent(uint32_t *path, uint32_t mode,
+static void repo_write_dirent(const uint32_t *path, uint32_t mode,
 			      uint32_t content_offset, uint32_t del)
 {
 	uint32_t name, revision, dir_o = ~0, parent_dir_o = ~0;
@@ -157,7 +158,24 @@ static void repo_write_dirent(uint32_t *path, uint32_t mode,
 		dent_remove(&dir_pointer(parent_dir_o)->entries, dent);
 }
 
-uint32_t repo_copy(uint32_t revision, uint32_t *src, uint32_t *dst)
+uint32_t repo_read_path(const uint32_t *path)
+{
+	uint32_t content_offset = 0;
+	struct repo_dirent *dent = repo_read_dirent(active_commit, path);
+	if (dent != NULL)
+		content_offset = dent->content_offset;
+	return content_offset;
+}
+
+uint32_t repo_read_mode(const uint32_t *path)
+{
+	struct repo_dirent *dent = repo_read_dirent(active_commit, path);
+	if (dent == NULL)
+		die("invalid dump: path to be modified is missing");
+	return dent->mode;
+}
+
+void repo_copy(uint32_t revision, const uint32_t *src, const uint32_t *dst)
 {
 	uint32_t mode = 0, content_offset = 0;
 	struct repo_dirent *src_dent;
@@ -167,7 +185,6 @@ uint32_t repo_copy(uint32_t revision, uint32_t *src, uint32_t *dst)
 		content_offset = src_dent->content_offset;
 		repo_write_dirent(dst, mode, content_offset, 0);
 	}
-	return mode;
 }
 
 void repo_add(uint32_t *path, uint32_t mode, uint32_t blob_mark)
@@ -175,20 +192,6 @@ void repo_add(uint32_t *path, uint32_t mode, uint32_t blob_mark)
 	repo_write_dirent(path, mode, blob_mark, 0);
 }
 
-uint32_t repo_modify_path(uint32_t *path, uint32_t mode, uint32_t blob_mark)
-{
-	struct repo_dirent *src_dent;
-	src_dent = repo_read_dirent(active_commit, path);
-	if (!src_dent)
-		return 0;
-	if (!blob_mark)
-		blob_mark = src_dent->content_offset;
-	if (!mode)
-		mode = src_dent->mode;
-	repo_write_dirent(path, mode, blob_mark, 0);
-	return mode;
-}
-
 void repo_delete(uint32_t *path)
 {
 	repo_write_dirent(path, 0, 0, 1);
@@ -275,8 +278,8 @@ void repo_diff(uint32_t r1, uint32_t r2)
 		    repo_commit_root_dir(commit_pointer(r2)));
 }
 
-void repo_commit(uint32_t revision, uint32_t author, char *log, uint32_t uuid,
-		 uint32_t url, unsigned long timestamp)
+void repo_commit(uint32_t revision, const char *author, char *log,
+		 const char *uuid, const char *url, unsigned long timestamp)
 {
 	fast_export_commit(revision, author, log, uuid, url, timestamp);
 	dent_commit();
diff --git a/vcs-svn/repo_tree.h b/vcs-svn/repo_tree.h
index 68baeb582..a1b0e8765 100644
--- a/vcs-svn/repo_tree.h
+++ b/vcs-svn/repo_tree.h
@@ -12,12 +12,14 @@
 #define REPO_MAX_PATH_DEPTH 1000
 
 uint32_t next_blob_mark(void);
-uint32_t repo_copy(uint32_t revision, uint32_t *src, uint32_t *dst);
+void repo_copy(uint32_t revision, const uint32_t *src, const uint32_t *dst);
 void repo_add(uint32_t *path, uint32_t mode, uint32_t blob_mark);
-uint32_t repo_modify_path(uint32_t *path, uint32_t mode, uint32_t blob_mark);
+uint32_t repo_read_path(const uint32_t *path);
+uint32_t repo_read_mode(const uint32_t *path);
 void repo_delete(uint32_t *path);
-void repo_commit(uint32_t revision, uint32_t author, char *log, uint32_t uuid,
-		 uint32_t url, long unsigned timestamp);
+void repo_commit(uint32_t revision, const char *author,
+		char *log, const char *uuid, const char *url,
+		long unsigned timestamp);
 void repo_diff(uint32_t r1, uint32_t r2);
 void repo_init(void);
 void repo_reset(void);
diff --git a/vcs-svn/svndump.c b/vcs-svn/svndump.c
index ee7c0bb2e..ea5b128e4 100644
--- a/vcs-svn/svndump.c
+++ b/vcs-svn/svndump.c
@@ -11,8 +11,14 @@
 #include "repo_tree.h"
 #include "fast_export.h"
 #include "line_buffer.h"
-#include "obj_pool.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
@@ -27,20 +33,8 @@
 #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];
@@ -48,24 +42,16 @@ static struct {
 } node_ctx;
 
 static struct {
-	uint32_t revision, author;
+	uint32_t revision;
 	unsigned long timestamp;
-	char *log;
+	struct strbuf log, author;
 } rev_ctx;
 
 static struct {
-	uint32_t version, uuid, url;
+	uint32_t version;
+	struct strbuf 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;
@@ -83,56 +69,58 @@ static void reset_rev_ctx(uint32_t revision)
 {
 	rev_ctx.revision = revision;
 	rev_ctx.timestamp = 0;
-	rev_ctx.log = NULL;
-	rev_ctx.author = ~0;
+	strbuf_reset(&rev_ctx.log);
+	strbuf_reset(&rev_ctx.author);
 }
 
-static void reset_dump_ctx(uint32_t url)
+static void reset_dump_ctx(const char *url)
 {
-	dump_ctx.url = url;
+	strbuf_reset(&dump_ctx.url);
+	if (url)
+		strbuf_addstr(&dump_ctx.url, url);
 	dump_ctx.version = 1;
-	dump_ctx.uuid = ~0;
+	strbuf_reset(&dump_ctx.uuid);
 }
 
-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,
+static void handle_property(const struct strbuf *key_buf,
+				const char *val, uint32_t len,
 				uint32_t *type_set)
 {
-	if (key == keys.svn_log) {
+	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");
-		/* 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) {
+		strbuf_reset(&rev_ctx.log);
+		strbuf_add(&rev_ctx.log, val, len);
+		break;
+	case sizeof("svn:author"):
+		if (constcmp(key, "svn:author"))
+			break;
+		strbuf_reset(&rev_ctx.author);
+		if (val)
+			strbuf_add(&rev_ctx.author, val, len);
+		break;
+	case sizeof("svn:date"):
+		if (constcmp(key, "svn:date"))
+			break;
 		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) {
+		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;
@@ -143,15 +131,22 @@ static void handle_property(uint32_t key, const char *val, uint32_t len,
 			return;
 		}
 		*type_set = 1;
-		node_ctx.type = key == keys.svn_executable ?
+		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)
 {
-	uint32_t key = ~0;
+	static struct strbuf key = STRBUF_INIT;
 	const char *t;
 	/*
 	 * NEEDSWORK: to support simple mode changes like
@@ -170,25 +165,37 @@ static void read_props(void)
 		uint32_t len;
 		const char *val;
 		const char type = t[0];
+		int ch;
 
 		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. */
+		if (!val || strlen(val) != 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);
 
 		switch (type) {
 		case 'K':
-			key = pool_intern(val);
-			continue;
 		case 'D':
-			key = pool_intern(val);
+			strbuf_reset(&key);
+			if (val)
+				strbuf_add(&key, val, len);
+			if (type == 'K')
+				continue;
+			assert(type == 'D');
 			val = NULL;
 			len = 0;
 			/* fall through */
 		case 'V':
-			handle_property(key, val, len, &type_set);
-			key = ~0;
+			handle_property(&key, val, len, &type_set);
+			strbuf_reset(&key);
 			continue;
 		default:
 			die("invalid property line: %s\n", t);
@@ -201,13 +208,14 @@ 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 (node_ctx.textLength != LENGTH_UNKNOWN)
+	if (have_text)
 		mark = next_blob_mark();
 	if (node_ctx.action == NODEACT_DELETE) {
-		if (mark || have_props || node_ctx.srcRev)
+		if (have_text || have_props || node_ctx.srcRev)
 			die("invalid dump: deletion node has "
 				"copyfrom info, text, or properties");
 		return repo_delete(node_ctx.dst);
@@ -221,37 +229,47 @@ static void handle_node(void)
 		if (node_ctx.action == NODEACT_ADD)
 			node_ctx.action = NODEACT_CHANGE;
 	}
-	if (mark && type == REPO_MODE_DIR)
+	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 = repo_modify_path(node_ctx.dst, 0, mark);
-		if (!mode)
-			die("invalid dump: path to be modified is missing");
+		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 (!mark && type != REPO_MODE_DIR)
+		if (!have_text && 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");
 	}
+
+	/*
+	 * Adjust mode to reflect properties.
+	 */
 	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)
+
+	/*
+	 * 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);
 }
@@ -259,8 +277,9 @@ static void handle_node(void)
 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);
+		repo_commit(rev_ctx.revision, rev_ctx.author.buf,
+			rev_ctx.log.buf, dump_ctx.uuid.buf, dump_ctx.url.buf,
+			rev_ctx.timestamp);
 }
 
 void svndump_read(const char *url)
@@ -269,44 +288,65 @@ void svndump_read(const char *url)
 	char *t;
 	uint32_t active_ctx = DUMP_CTX;
 	uint32_t len;
-	uint32_t key;
 
-	reset_dump_ctx(pool_intern(url));
+	reset_dump_ctx(url);
 	while ((t = buffer_read_line(&input))) {
-		val = strstr(t, ": ");
+		val = strchr(t, ':');
 		if (!val)
 			continue;
-		*val++ = '\0';
-		*val++ = '\0';
-		key = pool_intern(t);
+		val++;
+		if (*val != ' ')
+			continue;
+		val++;
 
-		if (key == keys.svn_fs_dump_format_version) {
+		/* 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);
-		} else if (key == keys.uuid) {
-			dump_ctx.uuid = pool_intern(val);
-		} else if (key == keys.revision_number) {
+			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));
-		} 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) {
+			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);
-		} else if (key == keys.node_action) {
+			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")) {
@@ -319,21 +359,44 @@ void svndump_read(const char *url)
 				fprintf(stderr, "Unknown node-action: %s\n", val);
 				node_ctx.action = NODEACT_UNKNOWN;
 			}
-		} else if (key == keys.node_copyfrom_path) {
+			break;
+		case sizeof("Node-copyfrom-path"):
+			if (constcmp(t, "Node-copyfrom-path"))
+				continue;
 			pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.src, "/", val);
-		} else if (key == keys.node_copyfrom_rev) {
+			break;
+		case sizeof("Node-copyfrom-rev"):
+			if (constcmp(t, "Node-copyfrom-rev"))
+				continue;
 			node_ctx.srcRev = atoi(val);
-		} else if (key == keys.text_content_length) {
-			node_ctx.textLength = atoi(val);
-		} else if (key == keys.prop_content_length) {
+			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);
-		} else if (key == keys.text_delta) {
-			node_ctx.text_delta = !strcmp(val, "true");
-		} else if (key == keys.prop_delta) {
+			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");
-		} else if (key == keys.content_length) {
+			break;
+		case sizeof("Content-length"):
+			if (constcmp(t, "Content-length"))
+				continue;
 			len = atoi(val);
-			buffer_read_line(&input);
+			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) {
@@ -341,10 +404,13 @@ void svndump_read(const char *url)
 				active_ctx = REV_CTX;
 			} else {
 				fprintf(stderr, "Unexpected content length header: %"PRIu32"\n", len);
-				buffer_skip_bytes(&input, 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)
@@ -356,20 +422,23 @@ 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);
+	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);
-	init_keys();
 	return 0;
 }
 
 void svndump_deinit(void)
 {
-	log_reset();
 	repo_reset();
-	reset_dump_ctx(~0);
+	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))
@@ -378,10 +447,10 @@ void svndump_deinit(void)
 
 void svndump_reset(void)
 {
-	log_reset();
 	buffer_reset(&input);
 	repo_reset();
-	reset_dump_ctx(~0);
-	reset_rev_ctx(0);
-	reset_node_ctx(NULL);
+	strbuf_release(&dump_ctx.uuid);
+	strbuf_release(&dump_ctx.url);
+	strbuf_release(&rev_ctx.log);
+	strbuf_release(&rev_ctx.author);
 }