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/* Shared general utility routines for GDB, the GNU debugger.
Copyright (C) 1986-2017 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_UTILS_H
#define COMMON_UTILS_H
#include <string>
#include <vector>
#include "poison.h"
/* If possible, define FUNCTION_NAME, a macro containing the name of
the function being defined. Since this macro may not always be
defined, all uses must be protected by appropriate macro definition
checks (Eg: "#ifdef FUNCTION_NAME").
Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
which contains the name of the function currently being defined.
This is broken in G++ before version 2.6.
C9x has a similar variable called __func__, but prefer the GCC one since
it demangles C++ function names. */
#if (GCC_VERSION >= 2004)
#define FUNCTION_NAME __PRETTY_FUNCTION__
#else
#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
#define FUNCTION_NAME __func__ /* ARI: func */
#endif
#endif
/* xmalloc(), xrealloc() and xcalloc() have already been declared in
"libiberty.h". */
/* Like xmalloc, but zero the memory. */
void *xzalloc (size_t);
template <typename T>
static void
xfree (T *ptr)
{
static_assert (IsFreeable<T>::value, "Trying to use xfree with a non-POD \
data type. Use operator delete instead.");
if (ptr != NULL)
free (ptr); /* ARI: free */
}
/* Like asprintf and vasprintf, but return the string, throw an error
if no memory. */
char *xstrprintf (const char *format, ...) ATTRIBUTE_PRINTF (1, 2);
char *xstrvprintf (const char *format, va_list ap)
ATTRIBUTE_PRINTF (1, 0);
/* Like snprintf, but throw an error if the output buffer is too small. */
int xsnprintf (char *str, size_t size, const char *format, ...)
ATTRIBUTE_PRINTF (3, 4);
/* Returns a std::string built from a printf-style format string. */
std::string string_printf (const char* fmt, ...)
ATTRIBUTE_PRINTF (1, 2);
/* Like string_printf, but takes a va_list. */
std::string string_vprintf (const char* fmt, va_list args)
ATTRIBUTE_PRINTF (1, 0);
/* Like string_printf, but appends to DEST instead of returning a new
std::string. */
void string_appendf (std::string &dest, const char* fmt, ...)
ATTRIBUTE_PRINTF (2, 3);
/* Like string_appendf, but takes a va_list. */
void string_vappendf (std::string &dest, const char* fmt, va_list args)
ATTRIBUTE_PRINTF (2, 0);
/* Make a copy of the string at PTR with LEN characters
(and add a null character at the end in the copy).
Uses malloc to get the space. Returns the address of the copy. */
char *savestring (const char *ptr, size_t len);
/* The strerror() function can return NULL for errno values that are
out of range. Provide a "safe" version that always returns a
printable string. */
extern char *safe_strerror (int);
/* Return non-zero if the start of STRING matches PATTERN, zero
otherwise. */
static inline int
startswith (const char *string, const char *pattern)
{
return strncmp (string, pattern, strlen (pattern)) == 0;
}
ULONGEST strtoulst (const char *num, const char **trailer, int base);
/* Skip leading whitespace characters in INP, returning an updated
pointer. If INP is NULL, return NULL. */
extern char *skip_spaces (char *inp);
/* A const-correct version of the above. */
extern const char *skip_spaces (const char *inp);
/* Skip leading non-whitespace characters in INP, returning an updated
pointer. If INP is NULL, return NULL. */
extern char *skip_to_space (char *inp);
/* A const-correct version of the above. */
extern const char *skip_to_space (const char *inp);
/* Assumes that V is an argv for a program, and iterates through
freeing all the elements. */
extern void free_vector_argv (std::vector<char *> &v);
/* Given a vector of arguments ARGV, return a string equivalent to
joining all the arguments with a whitespace separating them. */
extern std::string stringify_argv (const std::vector<char *> &argv);
/* Return true if VALUE is in [LOW, HIGH]. */
template <typename T>
static bool
in_inclusive_range (T value, T low, T high)
{
return value >= low && value <= high;
}
#endif
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