mirror of
https://github.com/MariaDB/server.git
synced 2025-01-18 13:02:28 +01:00
106 lines
3 KiB
C++
106 lines
3 KiB
C++
|
|
// vim:sw=2:ai
|
|
|
|
/*
|
|
* Copyright (C) 2010-2011 DeNA Co.,Ltd.. All rights reserved.
|
|
* Copyright (C) 2011 Kentoku SHIBA
|
|
* See COPYRIGHT.txt for details.
|
|
*/
|
|
|
|
#ifndef DENA_STRING_REF_HPP
|
|
#define DENA_STRING_REF_HPP
|
|
|
|
namespace dena {
|
|
|
|
struct string_wref {
|
|
typedef char value_type;
|
|
char *begin() const { return start; }
|
|
char *end() const { return start + length; }
|
|
size_t size() const { return length; }
|
|
private:
|
|
char *start;
|
|
size_t length;
|
|
public:
|
|
string_wref(char *s = 0, size_t len = 0) : start(s), length(len) { }
|
|
};
|
|
|
|
struct string_ref {
|
|
typedef const char value_type;
|
|
const char *begin() const { return start; }
|
|
const char *end() const { return start + length; }
|
|
size_t size() const { return length; }
|
|
void set(const char *s, size_t len) { start = s; length = len; }
|
|
void set(const char *s, const char *f) { start = s; length = f - s; }
|
|
private:
|
|
const char *start;
|
|
size_t length;
|
|
public:
|
|
string_ref(const char *s = 0, size_t len = 0) : start(s), length(len) { }
|
|
string_ref(const char *s, const char *f) : start(s), length(f - s) { }
|
|
string_ref(const string_wref& w) : start(w.begin()), length(w.size()) { }
|
|
};
|
|
|
|
template <size_t N> inline bool
|
|
operator ==(const string_ref& x, const char (& y)[N]) {
|
|
return (x.size() == N - 1) && (::memcmp(x.begin(), y, N - 1) == 0);
|
|
}
|
|
|
|
inline bool
|
|
operator ==(const string_ref& x, const string_ref& y) {
|
|
return (x.size() == y.size()) &&
|
|
(::memcmp(x.begin(), y.begin(), x.size()) == 0);
|
|
}
|
|
|
|
inline bool
|
|
operator !=(const string_ref& x, const string_ref& y) {
|
|
return (x.size() != y.size()) ||
|
|
(::memcmp(x.begin(), y.begin(), x.size()) != 0);
|
|
}
|
|
|
|
struct string_ref_list_wrap {
|
|
string_ref_list_wrap() {
|
|
if (SPD_INIT_DYNAMIC_ARRAY2(&string_ref_list, sizeof(string_ref),
|
|
NULL, 16, 16, MYF(MY_WME)))
|
|
string_ref_list_init = FALSE;
|
|
else
|
|
string_ref_list_init = TRUE;
|
|
}
|
|
virtual ~string_ref_list_wrap() {
|
|
if (string_ref_list_init) delete_dynamic(&string_ref_list); }
|
|
void clear() {
|
|
if (string_ref_list_init) string_ref_list.elements = 0; }
|
|
void push_back(string_ref &e) {
|
|
if (string_ref_list_init) insert_dynamic(&string_ref_list, (uchar*) &e);
|
|
return; }
|
|
size_t size() {
|
|
return string_ref_list_init ? string_ref_list.elements : 0; }
|
|
bool resize(size_t new_size) {
|
|
if (string_ref_list_init) {
|
|
if (string_ref_list.max_element < new_size && allocate_dynamic(
|
|
&string_ref_list, new_size)) return TRUE;
|
|
string_ref_list.elements = new_size;
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
bool empty() {
|
|
return string_ref_list_init ? string_ref_list.elements ?
|
|
FALSE : TRUE : TRUE; }
|
|
string_ref &operator [](size_t n) {
|
|
return ((string_ref *) (string_ref_list.buffer +
|
|
string_ref_list.size_of_element * n))[0]; }
|
|
bool string_ref_list_init;
|
|
DYNAMIC_ARRAY string_ref_list;
|
|
};
|
|
|
|
inline String *
|
|
q_append_str(String *str, const char *p) {
|
|
uint32 p_len = strlen(p);
|
|
if (str->reserve(p_len)) return NULL;
|
|
str->q_append(p, p_len); return str;
|
|
}
|
|
|
|
};
|
|
|
|
#endif
|
|
|