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nostrdb/cursor: add pull_varint_u32

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This is a varint helper that doesn't pull larger than uint32

Signed-off-by: William Casarin <jb55@jb55.com>
This commit is contained in:
William Casarin
2023-12-27 12:40:50 -08:00
committed by Daniel D’Aquino
parent 371e9fb406
commit b5ad3ed1a5
1 changed files with 13 additions and 0 deletions
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13
nostrdb/src/cursor.h
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@@ -332,6 +332,19 @@ static inline int cursor_pull_varint(struct cursor *cursor, uint64_t *n)
return 10; // Successfully read 10 bytes for a full 64-bit integer
}
static int cursor_pull_varint_u32(struct cursor *cursor, uint32_t *v)
{
uint64_t bigval;
if (!cursor_pull_varint(cursor, &bigval))
return 0;
if (bigval > UINT32_MAX)
return 0;
*v = (uint32_t) bigval;
return 1;
}
static inline int cursor_pull_int(struct cursor *cursor, int *i)
{