src/lib/str.h

#ifndef STR_H
#define STR_H

#include "buffer.h"

string_t *str_new(pool_t pool, size_t initial_size);
string_t *t_str_new(size_t initial_size);
/* Allocate a constant string using the given str as the input data.
   str pointer is saved directly, so it must not be freed until the returned
   string is no longer used. len must contain strlen(str). */
string_t *str_new_const(pool_t pool, const char *str, size_t len);
string_t *t_str_new_const(const char *str, size_t len);
void str_free(string_t **str);
char *str_free_without_data(string_t **str);

const char *str_c(string_t *str);
char *str_c_modifiable(string_t *str);
bool str_equals(const string_t *str1, const string_t *str2) ATTR_PURE;

static inline const unsigned char *str_data(const string_t *str)
{
    return str->data;
}
static inline size_t str_len(const string_t *str)
{
    return str->used;
}

/* Append string/character */
void str_append_n(string_t *str, const void *cstr, size_t max_len);

static inline void str_append(string_t *str, const char *cstr)
{
    buffer_append(str, cstr, strlen(cstr));
}
static inline void str_append_data(string_t *str, const void *data, size_t len)
{
    buffer_append(str, data, len);
}

static inline void str_append_c(string_t *str, unsigned char chr)
{
    buffer_append_c(str, chr);
}

static inline void str_append_str(string_t *dest, const string_t *src)
{
    buffer_append(dest, src->data, src->used);
}

/* Append printf()-like data */
void str_printfa(string_t *str, const char *fmt, ...)
    ATTR_FORMAT(2, 3);
void str_vprintfa(string_t *str, const char *fmt, va_list args)
    ATTR_FORMAT(2, 0);

static inline void str_insert(string_t *str, size_t pos, const char *cstr)
{
    buffer_insert(str, pos, cstr, strlen(cstr));
}

static inline void str_delete(string_t *str, size_t pos, size_t len)
{
    buffer_delete(str, pos, len);
}

/* Truncate the string to specified length. If it's already smaller,
   do nothing. */
static inline void str_truncate(string_t *str, size_t len)
{
    if (str_len(str) > len)
        buffer_set_used_size(str, len);
}

#endif