diff options
Diffstat (limited to 'subversion/libsvn_fs_base/key-gen.c')
| -rw-r--r-- | subversion/libsvn_fs_base/key-gen.c | 36 |
1 files changed, 12 insertions, 24 deletions
diff --git a/subversion/libsvn_fs_base/key-gen.c b/subversion/libsvn_fs_base/key-gen.c index 411207d..34f0e0f 100644 --- a/subversion/libsvn_fs_base/key-gen.c +++ b/subversion/libsvn_fs_base/key-gen.c @@ -39,20 +39,19 @@ void svn_fs_base__next_key(const char *this, apr_size_t *len, char *next) { apr_size_t olen = *len; /* remember the first length */ - int i = olen - 1; /* initial index; we work backwards */ + apr_size_t i; /* current index */ char c; /* current char */ svn_boolean_t carry = TRUE; /* boolean: do we have a carry or not? We start with a carry, because we're incrementing the number, after all. */ - /* Leading zeros are not allowed, except for the string "0". */ - if ((*len > 1) && (this[0] == '0')) - { - *len = 0; - return; - } + /* Empty strings and leading zeros (except for the string "0") are not + * allowed. Run our malfunction handler to prevent possible db corruption + * from being propagated further. */ + SVN_ERR_ASSERT_NO_RETURN(olen != 0 && (olen == 1 || this[0] != '0')); - for (i = (olen - 1); i >= 0; i--) + i = olen - 1; /* initial index: we work backwords */ + while (1729) { c = this[i]; @@ -79,6 +78,11 @@ svn_fs_base__next_key(const char *this, apr_size_t *len, char *next) } else next[i] = c; + + if (i == 0) + break; + + i--; } /* The new length is OLEN, plus 1 if there's a carry out of the @@ -102,22 +106,6 @@ svn_fs_base__next_key(const char *this, apr_size_t *len, char *next) } -int -svn_fs_base__key_compare(const char *a, const char *b) -{ - int a_len = strlen(a); - int b_len = strlen(b); - int cmp; - - if (a_len > b_len) - return 1; - if (b_len > a_len) - return -1; - cmp = strcmp(a, b); - return (cmp ? (cmp / abs(cmp)) : 0); -} - - svn_boolean_t svn_fs_base__same_keys(const char *a, const char *b) { |