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Diffstat (limited to 'vcs-svn/svndump.c')
-rw-r--r--vcs-svn/svndump.c134
1 files changed, 94 insertions, 40 deletions
diff --git a/vcs-svn/svndump.c b/vcs-svn/svndump.c
index bc792223b2..644fdc71ba 100644
--- a/vcs-svn/svndump.c
+++ b/vcs-svn/svndump.c
@@ -11,7 +11,6 @@
#include "repo_tree.h"
#include "fast_export.h"
#include "line_buffer.h"
-#include "string_pool.h"
#include "strbuf.h"
#include "svndump.h"
@@ -21,15 +20,19 @@
*/
#define constcmp(s, ref) memcmp(s, ref, sizeof(ref) - 1)
+#define REPORT_FILENO 3
+
#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
+/* States: */
+#define DUMP_CTX 0 /* dump metadata */
+#define REV_CTX 1 /* revision metadata */
+#define NODE_CTX 2 /* node metadata */
+#define INTERNODE_CTX 3 /* between nodes */
#define LENGTH_UNKNOWN (~0)
#define DATE_RFC2822_LEN 31
@@ -37,8 +40,9 @@
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 action, propLength, srcRev, type;
+ off_t text_length;
+ struct strbuf src, dst;
uint32_t text_delta, prop_delta;
} node_ctx;
@@ -58,10 +62,12 @@ 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.text_length = -1;
+ strbuf_reset(&node_ctx.src);
node_ctx.srcRev = 0;
- pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.dst, "/", fname);
+ strbuf_reset(&node_ctx.dst);
+ if (fname)
+ strbuf_addstr(&node_ctx.dst, fname);
node_ctx.text_delta = 0;
node_ctx.prop_delta = 0;
}
@@ -202,28 +208,32 @@ static void read_props(void)
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;
+ const int have_text = node_ctx.text_length != -1;
+ /*
+ * Old text for this node:
+ * NULL - directory or bug
+ * empty_blob - empty
+ * "<dataref>" - data retrievable from fast-import
+ */
+ static const char *const empty_blob = "::empty::";
+ const char *old_data = NULL;
+ uint32_t old_mode = REPO_MODE_BLB;
- 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);
+ repo_delete(node_ctx.dst.buf);
return;
}
if (node_ctx.action == NODEACT_REPLACE) {
- repo_delete(node_ctx.dst);
+ repo_delete(node_ctx.dst.buf);
node_ctx.action = NODEACT_ADD;
}
if (node_ctx.srcRev) {
- repo_copy(node_ctx.srcRev, node_ctx.src, node_ctx.dst);
+ repo_copy(node_ctx.srcRev, node_ctx.src.buf, node_ctx.dst.buf);
if (node_ctx.action == NODEACT_ADD)
node_ctx.action = NODEACT_CHANGE;
}
@@ -231,23 +241,27 @@ static void handle_node(void)
die("invalid dump: directories cannot have text attached");
/*
- * Decide on the new content (mark) and mode (node_ctx.type).
+ * Find old content (old_data) and decide on the new mode.
*/
- if (node_ctx.action == NODEACT_CHANGE && !~*node_ctx.dst) {
+ if (node_ctx.action == NODEACT_CHANGE && !*node_ctx.dst.buf) {
if (type != REPO_MODE_DIR)
die("invalid dump: root of tree is not a regular file");
+ old_data = NULL;
} 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);
+ old_data = repo_read_path(node_ctx.dst.buf, &mode);
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;
+ old_mode = mode;
} else if (node_ctx.action == NODEACT_ADD) {
- if (!have_text && type != REPO_MODE_DIR)
+ if (type == REPO_MODE_DIR)
+ old_data = NULL;
+ else if (have_text)
+ old_data = empty_blob;
+ else
die("invalid dump: adds node without text");
} else {
die("invalid dump: Node-path block lacks Node-action");
@@ -266,18 +280,39 @@ static void handle_node(void)
/*
* 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);
+ if (type == REPO_MODE_DIR) /* directories are not tracked. */
+ return;
+ assert(old_data);
+ if (old_data == empty_blob)
+ /* For the fast_export_* functions, NULL means empty. */
+ old_data = NULL;
+ if (!have_text) {
+ fast_export_modify(node_ctx.dst.buf, node_ctx.type, old_data);
+ return;
+ }
+ if (!node_ctx.text_delta) {
+ fast_export_modify(node_ctx.dst.buf, node_ctx.type, "inline");
+ fast_export_data(node_ctx.type, node_ctx.text_length, &input);
+ return;
+ }
+ fast_export_modify(node_ctx.dst.buf, node_ctx.type, "inline");
+ fast_export_blob_delta(node_ctx.type, old_mode, old_data,
+ node_ctx.text_length, &input);
}
-static void handle_revision(void)
+static void begin_revision(void)
+{
+ if (!rev_ctx.revision) /* revision 0 gets no git commit. */
+ return;
+ fast_export_begin_commit(rev_ctx.revision, rev_ctx.author.buf,
+ &rev_ctx.log, dump_ctx.uuid.buf, dump_ctx.url.buf,
+ rev_ctx.timestamp);
+}
+
+static void end_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);
+ fast_export_end_commit(rev_ctx.revision);
}
void svndump_read(const char *url)
@@ -318,8 +353,10 @@ void svndump_read(const char *url)
continue;
if (active_ctx == NODE_CTX)
handle_node();
+ if (active_ctx == REV_CTX)
+ begin_revision();
if (active_ctx != DUMP_CTX)
- handle_revision();
+ end_revision();
active_ctx = REV_CTX;
reset_rev_ctx(atoi(val));
break;
@@ -329,6 +366,8 @@ void svndump_read(const char *url)
if (!constcmp(t + strlen("Node-"), "path")) {
if (active_ctx == NODE_CTX)
handle_node();
+ if (active_ctx == REV_CTX)
+ begin_revision();
active_ctx = NODE_CTX;
reset_node_ctx(val);
break;
@@ -361,7 +400,8 @@ void svndump_read(const char *url)
case sizeof("Node-copyfrom-path"):
if (constcmp(t, "Node-copyfrom-path"))
continue;
- pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.src, "/", val);
+ strbuf_reset(&node_ctx.src);
+ strbuf_addstr(&node_ctx.src, val);
break;
case sizeof("Node-copyfrom-rev"):
if (constcmp(t, "Node-copyfrom-rev"))
@@ -370,7 +410,15 @@ void svndump_read(const char *url)
break;
case sizeof("Text-content-length"):
if (!constcmp(t, "Text-content-length")) {
- node_ctx.textLength = atoi(val);
+ char *end;
+ uintmax_t textlen;
+
+ textlen = strtoumax(val, &end, 10);
+ if (!isdigit(*val) || *end)
+ die("invalid dump: non-numeric length %s", val);
+ if (textlen > maximum_signed_value_of_type(off_t))
+ die("unrepresentable length in dump: %s", val);
+ node_ctx.text_length = (off_t) textlen;
break;
}
if (constcmp(t, "Prop-content-length"))
@@ -399,7 +447,7 @@ void svndump_read(const char *url)
read_props();
} else if (active_ctx == NODE_CTX) {
handle_node();
- active_ctx = REV_CTX;
+ active_ctx = INTERNODE_CTX;
} else {
fprintf(stderr, "Unexpected content length header: %"PRIu32"\n", len);
if (buffer_skip_bytes(&input, len) != len)
@@ -411,19 +459,23 @@ void svndump_read(const char *url)
die_short_read();
if (active_ctx == NODE_CTX)
handle_node();
+ if (active_ctx == REV_CTX)
+ begin_revision();
if (active_ctx != DUMP_CTX)
- handle_revision();
+ end_revision();
}
int svndump_init(const char *filename)
{
if (buffer_init(&input, filename))
return error("cannot open %s: %s", filename, strerror(errno));
- repo_init();
+ fast_export_init(REPORT_FILENO);
strbuf_init(&dump_ctx.uuid, 4096);
strbuf_init(&dump_ctx.url, 4096);
strbuf_init(&rev_ctx.log, 4096);
strbuf_init(&rev_ctx.author, 4096);
+ strbuf_init(&node_ctx.src, 4096);
+ strbuf_init(&node_ctx.dst, 4096);
reset_dump_ctx(NULL);
reset_rev_ctx(0);
reset_node_ctx(NULL);
@@ -432,11 +484,13 @@ int svndump_init(const char *filename)
void svndump_deinit(void)
{
- repo_reset();
+ fast_export_deinit();
reset_dump_ctx(NULL);
reset_rev_ctx(0);
reset_node_ctx(NULL);
strbuf_release(&rev_ctx.log);
+ strbuf_release(&node_ctx.src);
+ strbuf_release(&node_ctx.dst);
if (buffer_deinit(&input))
fprintf(stderr, "Input error\n");
if (ferror(stdout))
@@ -445,8 +499,8 @@ void svndump_deinit(void)
void svndump_reset(void)
{
+ fast_export_reset();
buffer_reset(&input);
- repo_reset();
strbuf_release(&dump_ctx.uuid);
strbuf_release(&dump_ctx.url);
strbuf_release(&rev_ctx.log);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 01:17:52 +0000