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/* A simple growing buffer for GDB.
Copyright (C) 2009-2020 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef COMMON_BUFFER_H
#define COMMON_BUFFER_H
struct buffer
{
char *buffer;
size_t buffer_size; /* allocated size */
size_t used_size; /* actually used size */
};
/* Append DATA of size SIZE to the end of BUFFER. Grows the buffer to
accommodate the new data. */
void buffer_grow (struct buffer *buffer, const char *data, size_t size);
/* Append C to the end of BUFFER. Grows the buffer to accommodate the
new data. */
static inline void
buffer_grow_char (struct buffer *buffer, char c)
{
buffer_grow (buffer, &c, 1);
}
/* Release any memory held by BUFFER. */
void buffer_free (struct buffer *buffer);
/* Initialize BUFFER. BUFFER holds no memory afterwards. */
void buffer_init (struct buffer *buffer);
/* Return a pointer into BUFFER data, effectively transferring
ownership of the buffer memory to the caller. Calling buffer_free
afterwards has no effect on the returned data. */
char* buffer_finish (struct buffer *buffer);
/* Simple printf to buffer function. Current implemented formatters:
%s - grow an xml escaped text in BUFFER.
%d - grow an signed integer in BUFFER.
%u - grow an unsigned integer in BUFFER.
%x - grow an unsigned integer formatted in hexadecimal in BUFFER.
%o - grow an unsigned integer formatted in octal in BUFFER. */
void buffer_xml_printf (struct buffer *buffer, const char *format, ...)
ATTRIBUTE_PRINTF (2, 3);
#define buffer_grow_str(BUFFER,STRING) \
buffer_grow (BUFFER, STRING, strlen (STRING))
#define buffer_grow_str0(BUFFER,STRING) \
buffer_grow (BUFFER, STRING, strlen (STRING) + 1)
#endif /* COMMON_BUFFER_H */
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