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mdbx: refine mdbx_dump_val().

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Change-Id: I72dac7c44c842d16d6b8776248ba20014d0709a9
This commit is contained in:
Leonid Yuriev 2020-07-30 13:41:14 +03:00
parent 0a01b46112
commit f4021c8028
1 changed files with 8 additions and 7 deletions
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15
src/core.c
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@ -3387,17 +3387,18 @@ const char *mdbx_dump_val(const MDBX_val *key, char *const buf,
const size_t bufsize) { const size_t bufsize) {
if (!key) if (!key)
return "<null>"; return "<null>";
if (!buf || bufsize < 4)
return nullptr;
if (!key->iov_len) if (!key->iov_len)
return "<empty>"; return "<empty>";
if (!buf || bufsize < 4)
return nullptr;
const uint8_t *const data = key->iov_base;
bool is_ascii = true; bool is_ascii = true;
unsigned i; const uint8_t *const data = key->iov_base;
for (i = 0; is_ascii && i < key->iov_len; i++) for (unsigned i = 0; i < key->iov_len; i++)
if (data[i] < ' ' || data[i] > 127) if (data[i] < ' ' || data[i] > '~') {
is_ascii = false; is_ascii = false;
break;
}
if (is_ascii) { if (is_ascii) {
int len = int len =
@ -3409,7 +3410,7 @@ const char *mdbx_dump_val(const MDBX_val *key, char *const buf,
char *const detent = buf + bufsize - 2; char *const detent = buf + bufsize - 2;
char *ptr = buf; char *ptr = buf;
*ptr++ = '<'; *ptr++ = '<';
for (i = 0; i < key->iov_len; i++) { for (unsigned i = 0; i < key->iov_len; i++) {
const ptrdiff_t left = detent - ptr; const ptrdiff_t left = detent - ptr;
assert(left > 0); assert(left > 0);
int len = snprintf(ptr, left, "%02x", data[i]); int len = snprintf(ptr, left, "%02x", data[i]);