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vcs-svn: allow 64-bit Prop-Content-Length

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Currently the vcs-svn/ library only pays attention to the presence of
the Prop-Content-Length field and doesn't care about its value, but
some day we might care about the value.  Parse it as an off_t instead
of arbitrarily limiting to 32 bits for intuitiveness.

So now you can import from a dump with more than 2 GiB of properties
for a node.  In practice that isn't likely to happen often, and this
is mostly meant as a cleanup.

Based-on-patch-by: David Barr <davidbarr@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
This commit is contained in:
Jonathan Nieder 2012-07-05 22:47:47 -05:00
parent 96a60a8709
commit e32b79cb32
1 changed files with 18 additions and 15 deletions
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33
vcs-svn/svndump.c
View file

@ -34,14 +34,13 @@
#define NODE_CTX 2 /* node metadata */ #define NODE_CTX 2 /* node metadata */
#define INTERNODE_CTX 3 /* between nodes */ #define INTERNODE_CTX 3 /* between nodes */
#define LENGTH_UNKNOWN (~0)
#define DATE_RFC2822_LEN 31 #define DATE_RFC2822_LEN 31
static struct line_buffer input = LINE_BUFFER_INIT; static struct line_buffer input = LINE_BUFFER_INIT;
static struct { static struct {
uint32_t action, propLength, srcRev, type; uint32_t action, srcRev, type;
off_t text_length; off_t prop_length, text_length;
struct strbuf src, dst; struct strbuf src, dst;
uint32_t text_delta, prop_delta; uint32_t text_delta, prop_delta;
} node_ctx; } node_ctx;
@ -61,7 +60,7 @@ static void reset_node_ctx(char *fname)
{ {
node_ctx.type = 0; node_ctx.type = 0;
node_ctx.action = NODEACT_UNKNOWN; node_ctx.action = NODEACT_UNKNOWN;
node_ctx.propLength = LENGTH_UNKNOWN; node_ctx.prop_length = -1;
node_ctx.text_length = -1; node_ctx.text_length = -1;
strbuf_reset(&node_ctx.src); strbuf_reset(&node_ctx.src);
node_ctx.srcRev = 0; node_ctx.srcRev = 0;
@ -209,7 +208,7 @@ static void read_props(void)
static void handle_node(void) static void handle_node(void)
{ {
const uint32_t type = node_ctx.type; const uint32_t type = node_ctx.type;
const int have_props = node_ctx.propLength != LENGTH_UNKNOWN; const int have_props = node_ctx.prop_length != -1;
const int have_text = node_ctx.text_length != -1; const int have_text = node_ctx.text_length != -1;
/* /*
* Old text for this node: * Old text for this node:
@ -273,7 +272,7 @@ static void handle_node(void)
if (have_props) { if (have_props) {
if (!node_ctx.prop_delta) if (!node_ctx.prop_delta)
node_ctx.type = type; node_ctx.type = type;
if (node_ctx.propLength) if (node_ctx.prop_length)
read_props(); read_props();
} }
@ -409,22 +408,26 @@ void svndump_read(const char *url)
node_ctx.srcRev = atoi(val); node_ctx.srcRev = atoi(val);
break; break;
case sizeof("Text-content-length"): case sizeof("Text-content-length"):
if (!constcmp(t, "Text-content-length")) { if (constcmp(t, "Text") && constcmp(t, "Prop"))
continue;
if (constcmp(t + 4, "-content-length"))
continue;
{
char *end; char *end;
uintmax_t textlen; uintmax_t len;
textlen = strtoumax(val, &end, 10); len = strtoumax(val, &end, 10);
if (!isdigit(*val) || *end) if (!isdigit(*val) || *end)
die("invalid dump: non-numeric length %s", val); die("invalid dump: non-numeric length %s", val);
if (textlen > maximum_signed_value_of_type(off_t)) if (len > maximum_signed_value_of_type(off_t))
die("unrepresentable length in dump: %s", val); die("unrepresentable length in dump: %s", val);
node_ctx.text_length = (off_t) textlen;
if (*t == 'T')
node_ctx.text_length = (off_t) len;
else
node_ctx.prop_length = (off_t) len;
break; break;
} }
if (constcmp(t, "Prop-content-length"))
continue;
node_ctx.propLength = atoi(val);
break;
case sizeof("Text-delta"): case sizeof("Text-delta"):
if (!constcmp(t, "Text-delta")) { if (!constcmp(t, "Text-delta")) {
node_ctx.text_delta = !strcmp(val, "true"); node_ctx.text_delta = !strcmp(val, "true");