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bd413795d3
This adds string_vprintf, a va_list variant of string_printf. This will be used in later patches. gdb/ChangeLog 2017-09-29 Tom Tromey <tom@tromey.com> * unittests/common-utils-selftests.c (format): New function. (string_vprintf_tests): New function. (_initialize_common_utils_selftests): Register new tests. * common/common-utils.c (string_vprintf): New function. * common/common-utils.h (string_vprintf): Declare.
120 lines
4.0 KiB
C++
120 lines
4.0 KiB
C++
/* Shared general utility routines for GDB, the GNU debugger.
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Copyright (C) 1986-2017 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef COMMON_UTILS_H
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#define COMMON_UTILS_H
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#include <string>
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#include <vector>
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/* If possible, define FUNCTION_NAME, a macro containing the name of
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the function being defined. Since this macro may not always be
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defined, all uses must be protected by appropriate macro definition
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checks (Eg: "#ifdef FUNCTION_NAME").
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Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
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which contains the name of the function currently being defined.
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This is broken in G++ before version 2.6.
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C9x has a similar variable called __func__, but prefer the GCC one since
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it demangles C++ function names. */
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#if (GCC_VERSION >= 2004)
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#define FUNCTION_NAME __PRETTY_FUNCTION__
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#else
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#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
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#define FUNCTION_NAME __func__ /* ARI: func */
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#endif
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#endif
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/* xmalloc(), xrealloc() and xcalloc() have already been declared in
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"libiberty.h". */
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/* Like xmalloc, but zero the memory. */
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void *xzalloc (size_t);
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void xfree (void *);
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/* Like asprintf and vasprintf, but return the string, throw an error
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if no memory. */
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char *xstrprintf (const char *format, ...) ATTRIBUTE_PRINTF (1, 2);
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char *xstrvprintf (const char *format, va_list ap)
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ATTRIBUTE_PRINTF (1, 0);
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/* Like snprintf, but throw an error if the output buffer is too small. */
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int xsnprintf (char *str, size_t size, const char *format, ...)
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ATTRIBUTE_PRINTF (3, 4);
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/* Returns a std::string built from a printf-style format string. */
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std::string string_printf (const char* fmt, ...)
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ATTRIBUTE_PRINTF (1, 2);
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/* Like string_printf, but takes a va_list. */
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std::string string_vprintf (const char* fmt, va_list args)
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ATTRIBUTE_PRINTF (1, 0);
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/* Make a copy of the string at PTR with LEN characters
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(and add a null character at the end in the copy).
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Uses malloc to get the space. Returns the address of the copy. */
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char *savestring (const char *ptr, size_t len);
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/* The strerror() function can return NULL for errno values that are
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out of range. Provide a "safe" version that always returns a
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printable string. */
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extern char *safe_strerror (int);
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/* Return non-zero if the start of STRING matches PATTERN, zero
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otherwise. */
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static inline int
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startswith (const char *string, const char *pattern)
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{
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return strncmp (string, pattern, strlen (pattern)) == 0;
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}
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ULONGEST strtoulst (const char *num, const char **trailer, int base);
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/* Skip leading whitespace characters in INP, returning an updated
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pointer. If INP is NULL, return NULL. */
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extern char *skip_spaces (char *inp);
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/* A const-correct version of the above. */
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extern const char *skip_spaces (const char *inp);
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/* Skip leading non-whitespace characters in INP, returning an updated
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pointer. If INP is NULL, return NULL. */
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extern char *skip_to_space (char *inp);
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/* A const-correct version of the above. */
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extern const char *skip_to_space (const char *inp);
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/* Assumes that V is an argv for a program, and iterates through
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freeing all the elements. */
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extern void free_vector_argv (std::vector<char *> &v);
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/* Given a vector of arguments ARGV, return a string equivalent to
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joining all the arguments with a whitespace separating them. */
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extern std::string stringify_argv (const std::vector<char *> &argv);
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#endif
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