mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-10 15:22:04 +00:00
9cd2d366ed
document the functions (for doxygen) dstring.c: fix a bunch of potential buffer overflows
137 lines
4.9 KiB
C
137 lines
4.9 KiB
C
/*
|
|
dstring.h
|
|
|
|
Dynamic string buffer functions
|
|
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
|
|
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 2
|
|
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, write to:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#ifndef __dstring_h
|
|
#define __dstring_h
|
|
|
|
#include <stdarg.h>
|
|
|
|
typedef struct dstring_s {
|
|
unsigned long int size, truesize;
|
|
char *str;
|
|
} dstring_t;
|
|
|
|
|
|
// General buffer functions
|
|
/** Create a new dstring. size and truesize start at 0 and no string buffer
|
|
is allocated.
|
|
*/
|
|
dstring_t *dstring_new(void);
|
|
/** Delete a dstring. Both the string buffer and dstring object are freed.
|
|
*/
|
|
void dstring_delete (dstring_t *dstr);
|
|
/** Resize the string buffer if necessary. The buffer is guaranteed to be
|
|
large enough to hold size bytes (rounded up to the next 1kB boundary)
|
|
*/
|
|
void dstring_adjust (dstring_t *dstr);
|
|
/** Copy len bytes from data into the dstring, replacing any existing data.
|
|
*/
|
|
void dstring_copy (dstring_t *dstr, const char *data, unsigned int len);
|
|
/** Append len bytes from data onto the end of the dstring.
|
|
*/
|
|
void dstring_append (dstring_t *dstr, const char *data, unsigned int len);
|
|
/** Insert len bytes from data int the dstring at pos. If pos is past the
|
|
end of the dstring, equivalent to dstring_append.
|
|
*/
|
|
void dstring_insert (dstring_t *dstr, unsigned int pos, const char *data,
|
|
unsigned int len);
|
|
/** Remove len bytes from the dstring starting at pos.
|
|
*/
|
|
void dstring_snip (dstring_t *dstr, unsigned int pos, unsigned int len);
|
|
/** Set the size of the dstring to 0 bytes. Does not free the string buffer
|
|
anticipating reuse.
|
|
*/
|
|
void dstring_clear (dstring_t *dstr);
|
|
/** Replace rlen bytes in dstring at pos with len bytes from data. Moves
|
|
trailing bytes as needed.
|
|
*/
|
|
void dstring_replace (dstring_t *dstr, unsigned int pos, unsigned int rlen,
|
|
const char *data, unsigned int len);
|
|
/** Delete the dstring object retaining the string buffer. The string buffer
|
|
will be just big enough to hold the data. Does NOT ensure the string is
|
|
null terminated.
|
|
*/
|
|
char *dstring_freeze (dstring_t *dstr);
|
|
|
|
// String-specific functions
|
|
/** Allocate a new dstring pre-initialized as a null terminated string. size
|
|
will be 1 and the first byte 0.
|
|
*/
|
|
dstring_t *dstring_newstr (void);
|
|
/** Copy the null terminated string into the dstring. Replaces any existing
|
|
data.
|
|
The dstring does not have to be null terminated but will become so.
|
|
*/
|
|
void dstring_copystr (dstring_t *dstr, const char *str);
|
|
/** Copy up to len bytes from the string into the dstring. Replaces any
|
|
existing data.
|
|
The dstring does not have to be null terminated but will become so.
|
|
*/
|
|
void dstring_copysubstr (dstring_t *dstr, const char *str, unsigned int len);
|
|
/** Append the null terminated string to the end of the dstring.
|
|
The dstring does not have to be null terminated but will become so.
|
|
However, any embedded nulls will be treated as the end of the dstring.
|
|
*/
|
|
void dstring_appendstr (dstring_t *dstr, const char *str);
|
|
/** Append up to len bytes from the string to the end of the dstring.
|
|
The dstring does not have to be null terminated but will become so.
|
|
However, any embedded nulls will be treated as the end of the dstring.
|
|
*/
|
|
void dstring_appendsubstr (dstring_t *dstr, const char *str, unsigned int len);
|
|
/** Insert the null terminated string into the dstring at pos. The dstring
|
|
is NOT forced to be null terminated.
|
|
*/
|
|
void dstring_insertstr (dstring_t *dstr, unsigned int pos, const char *str);
|
|
/** Insert up to len bytes from the string into the dstring at pos. The
|
|
dstring is NOT forced to be null terminated.
|
|
*/
|
|
void dstring_insertsubstr (dstring_t *dstr, unsigned int pos, const char *str,
|
|
unsigned int len);
|
|
/** Clear the dstring to be equivalent to "". Does not resize the string buffer
|
|
but size is set to 1.
|
|
dstr = dstring_new (); dstring_clearstr (dstr); is exactly equivalent to
|
|
dstr = dstring_newstr ();
|
|
*/
|
|
void dstring_clearstr (dstring_t *dstr);
|
|
|
|
//@{
|
|
/** Formatted printing to dstrings. Existing data is replaced by the formatted
|
|
string.
|
|
*/
|
|
int dvsprintf (dstring_t *dstr, const char *fmt, va_list args);
|
|
int dsprintf (dstring_t *dstr, const char *fmt, ...) __attribute__((format(printf,2,3)));
|
|
//@}
|
|
//@{
|
|
/** Formatted printing to dstrings. Formatted string is appened to the dstring.
|
|
Embedded nulls in the dstring are ignored.
|
|
*/
|
|
int davsprintf (dstring_t *dstr, const char *fmt, va_list args);
|
|
int dasprintf (dstring_t *dstr, const char *fmt, ...) __attribute__((format(printf,2,3)));
|
|
//@}
|
|
|
|
#endif // __dstring_h
|