1 /* Shared general utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986-2017 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #ifndef COMMON_UTILS_H
21 #define COMMON_UTILS_H
26 /* If possible, define FUNCTION_NAME, a macro containing the name of
27 the function being defined. Since this macro may not always be
28 defined, all uses must be protected by appropriate macro definition
29 checks (Eg: "#ifdef FUNCTION_NAME").
31 Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
32 which contains the name of the function currently being defined.
33 This is broken in G++ before version 2.6.
34 C9x has a similar variable called __func__, but prefer the GCC one since
35 it demangles C++ function names. */
36 #if (GCC_VERSION >= 2004)
37 #define FUNCTION_NAME __PRETTY_FUNCTION__
39 #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
40 #define FUNCTION_NAME __func__ /* ARI: func */
44 /* xmalloc(), xrealloc() and xcalloc() have already been declared in
47 /* Like xmalloc, but zero the memory. */
48 void *xzalloc (size_t);
52 /* Like asprintf and vasprintf, but return the string, throw an error
54 char *xstrprintf (const char *format
, ...) ATTRIBUTE_PRINTF (1, 2);
55 char *xstrvprintf (const char *format
, va_list ap
)
56 ATTRIBUTE_PRINTF (1, 0);
58 /* Like snprintf, but throw an error if the output buffer is too small. */
59 int xsnprintf (char *str
, size_t size
, const char *format
, ...)
60 ATTRIBUTE_PRINTF (3, 4);
62 /* Returns a std::string built from a printf-style format string. */
63 std::string
string_printf (const char* fmt
, ...)
64 ATTRIBUTE_PRINTF (1, 2);
66 /* Make a copy of the string at PTR with LEN characters
67 (and add a null character at the end in the copy).
68 Uses malloc to get the space. Returns the address of the copy. */
70 char *savestring (const char *ptr
, size_t len
);
72 /* The strerror() function can return NULL for errno values that are
73 out of range. Provide a "safe" version that always returns a
76 extern char *safe_strerror (int);
78 /* Return non-zero if the start of STRING matches PATTERN, zero
82 startswith (const char *string
, const char *pattern
)
84 return strncmp (string
, pattern
, strlen (pattern
)) == 0;
87 ULONGEST
strtoulst (const char *num
, const char **trailer
, int base
);
89 /* Skip leading whitespace characters in INP, returning an updated
90 pointer. If INP is NULL, return NULL. */
92 extern char *skip_spaces (char *inp
);
94 /* A const-correct version of the above. */
96 extern const char *skip_spaces (const char *inp
);
98 /* Skip leading non-whitespace characters in INP, returning an updated
99 pointer. If INP is NULL, return NULL. */
101 extern char *skip_to_space (char *inp
);
103 /* A const-correct version of the above. */
105 extern const char *skip_to_space (const char *inp
);
107 /* Assumes that V is an argv for a program, and iterates through
108 freeing all the elements. */
109 extern void free_vector_argv (std::vector
<char *> &v
);
111 /* Given a vector of arguments ARGV, return a string equivalent to
112 joining all the arguments with a whitespace separating them. */
113 extern std::string
stringify_argv (const std::vector
<char *> &argv
);
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