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/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef DYNAMIC_STRING_H
#define DYNAMIC_STRING_H 1
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <time.h>
#include "compiler.h"
/* A "dynamic string", that is, a buffer that can be used to construct a
* string across a series of operations that extend or modify it.
*
* The 'string' member does not always point to a null-terminated string.
* Initially it is NULL, and even when it is nonnull, some operations do not
* ensure that it is null-terminated. Use ds_cstr() to ensure that memory is
* allocated for the string and that it is null-terminated. */
struct ds {
char *string; /* Null-terminated string. */
size_t length; /* Bytes used, not including null terminator. */
size_t allocated; /* Bytes allocated, not including null terminator. */
};
#define DS_EMPTY_INITIALIZER { NULL, 0, 0 }
void ds_init(struct ds *);
void ds_clear(struct ds *);
void ds_truncate(struct ds *, size_t new_length);
void ds_reserve(struct ds *, size_t min_length);
char *ds_put_uninit(struct ds *, size_t n);
static inline void ds_put_char(struct ds *, char);
void ds_put_utf8(struct ds *, int uc);
void ds_put_char_multiple(struct ds *, char, size_t n);
void ds_put_buffer(struct ds *, const char *, size_t n);
void ds_put_cstr(struct ds *, const char *);
void ds_put_and_free_cstr(struct ds *, char *);
void ds_put_format(struct ds *, const char *, ...) PRINTF_FORMAT(2, 3);
void ds_put_format_valist(struct ds *, const char *, va_list)
PRINTF_FORMAT(2, 0);
void ds_put_printable(struct ds *, const char *, size_t);
void ds_put_hex_dump(struct ds *ds, const void *buf_, size_t size,
uintptr_t ofs, bool ascii);
int ds_get_line(struct ds *, FILE *);
int ds_get_preprocessed_line(struct ds *, FILE *, int *line_number);
int ds_get_test_line(struct ds *, FILE *);
void ds_put_strftime_msec(struct ds *, const char *template, long long int when,
bool utc);
char *xastrftime_msec(const char *template, long long int when, bool utc);
char *ds_cstr(struct ds *);
const char *ds_cstr_ro(const struct ds *);
char *ds_steal_cstr(struct ds *);
void ds_destroy(struct ds *);
void ds_swap(struct ds *, struct ds *);
int ds_last(const struct ds *);
void ds_chomp(struct ds *, int c);
/* Inline functions. */
void ds_put_char__(struct ds *, char);
static inline void
ds_put_char(struct ds *ds, char c)
{
if (ds->length < ds->allocated) {
ds->string[ds->length++] = c;
ds->string[ds->length] = '\0';
} else {
ds_put_char__(ds, c);
}
}
#endif /* dynamic-string.h */
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