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Diffstat (limited to 'gdb/gdbsupport/buffer.h')
-rw-r--r-- | gdb/gdbsupport/buffer.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/gdb/gdbsupport/buffer.h b/gdb/gdbsupport/buffer.h new file mode 100644 index 0000000..8b24b54 --- /dev/null +++ b/gdb/gdbsupport/buffer.h @@ -0,0 +1,68 @@ +/* A simple growing buffer for GDB. + + Copyright (C) 2009-2019 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 */ |