382 lines
13 KiB
C
382 lines
13 KiB
C
/* Function declarations for libiberty.
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Copyright 2001, 2002 Free Software Foundation, Inc.
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Note - certain prototypes declared in this header file are for
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functions whoes implementation copyright does not belong to the
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FSF. Those prototypes are present in this file for reference
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purposes only and their presence in this file should not construed
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as an indication of ownership by the FSF of the implementation of
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those functions in any way or form whatsoever.
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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 2, or (at your option)
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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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Written by Cygnus Support, 1994.
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The libiberty library provides a number of functions which are
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missing on some operating systems. We do not declare those here,
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to avoid conflicts with the system header files on operating
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systems that do support those functions. In this file we only
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declare those functions which are specific to libiberty. */
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#ifndef LIBIBERTY_H
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#define LIBIBERTY_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "ansidecl.h"
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/* Get a definition for size_t. */
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#include <stddef.h>
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/* Get a definition for va_list. */
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#include <stdarg.h>
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/* Build an argument vector from a string. Allocates memory using
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malloc. Use freeargv to free the vector. */
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extern char **buildargv (const char *) ATTRIBUTE_MALLOC;
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/* Free a vector returned by buildargv. */
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extern void freeargv (char **);
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/* Duplicate an argument vector. Allocates memory using malloc. Use
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freeargv to free the vector. */
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extern char **dupargv (char **) ATTRIBUTE_MALLOC;
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/* Return the last component of a path name. Note that we can't use a
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prototype here because the parameter is declared inconsistently
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across different systems, sometimes as "char *" and sometimes as
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"const char *" */
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/* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is
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undefined, we haven't run the autoconf check so provide the
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declaration without arguments. If it is 0, we checked and failed
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to find the declaration so provide a fully prototyped one. If it
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is 1, we found it so don't provide any declaration at all. */
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#if !HAVE_DECL_BASENAME
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#if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) || defined (HAVE_DECL_BASENAME)
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extern char *basename (const char *);
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#else
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extern char *basename ();
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#endif
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#endif
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/* A well-defined basename () that is always compiled in. */
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extern const char *lbasename (const char *);
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/* A well-defined realpath () that is always compiled in. */
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extern char *lrealpath (const char *);
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/* Concatenate an arbitrary number of strings. You must pass NULL as
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the last argument of this function, to terminate the list of
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strings. Allocates memory using xmalloc. */
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extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
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/* Concatenate an arbitrary number of strings. You must pass NULL as
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the last argument of this function, to terminate the list of
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strings. Allocates memory using xmalloc. The first argument is
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not one of the strings to be concatenated, but if not NULL is a
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pointer to be freed after the new string is created, similar to the
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way xrealloc works. */
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extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
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/* Determine the length of concatenating an arbitrary number of
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strings. You must pass NULL as the last argument of this function,
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to terminate the list of strings. */
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extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL;
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/* Concatenate an arbitrary number of strings into a SUPPLIED area of
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memory. You must pass NULL as the last argument of this function,
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to terminate the list of strings. The supplied memory is assumed
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to be large enough. */
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extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_SENTINEL;
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/* Concatenate an arbitrary number of strings into a GLOBAL area of
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memory. You must pass NULL as the last argument of this function,
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to terminate the list of strings. The supplied memory is assumed
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to be large enough. */
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extern char *concat_copy2 (const char *, ...) ATTRIBUTE_SENTINEL;
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/* This is the global area used by concat_copy2. */
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extern char *libiberty_concat_ptr;
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/* Concatenate an arbitrary number of strings. You must pass NULL as
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the last argument of this function, to terminate the list of
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strings. Allocates memory using alloca. The arguments are
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evaluated twice! */
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#define ACONCAT(ACONCAT_PARAMS) \
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(libiberty_concat_ptr = alloca (concat_length ACONCAT_PARAMS + 1), \
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concat_copy2 ACONCAT_PARAMS)
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/* Check whether two file descriptors refer to the same file. */
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extern int fdmatch (int fd1, int fd2);
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/* Get the working directory. The result is cached, so don't call
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chdir() between calls to getpwd(). */
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extern char * getpwd (void);
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/* Get the current time. */
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/* Prototypes vary from system to system, so we only provide a
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prototype on systems where we know that we need it. */
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#ifdef __MINGW32__
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/* Forward declaration to avoid #include <sys/time.h>. */
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struct timeval;
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extern int gettimeofday (struct timeval *, void *);
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#endif
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/* Get the amount of time the process has run, in microseconds. */
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extern long get_run_time (void);
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/* Generate a relocated path to some installation directory. Allocates
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return value using malloc. */
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extern char *make_relative_prefix (const char *, const char *,
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const char *) ATTRIBUTE_MALLOC;
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/* Choose a temporary directory to use for scratch files. */
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extern char *choose_temp_base (void) ATTRIBUTE_MALLOC;
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/* Return a temporary file name or NULL if unable to create one. */
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extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC;
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/* Remove a link to a file unless it is special. */
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extern int unlink_if_ordinary (const char *);
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/* Allocate memory filled with spaces. Allocates using malloc. */
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extern const char *spaces (int count);
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/* Return the maximum error number for which strerror will return a
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string. */
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extern int errno_max (void);
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/* Return the name of an errno value (e.g., strerrno (EINVAL) returns
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"EINVAL"). */
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extern const char *strerrno (int);
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/* Given the name of an errno value, return the value. */
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extern int strtoerrno (const char *);
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/* ANSI's strerror(), but more robust. */
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extern char *xstrerror (int);
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/* Return the maximum signal number for which strsignal will return a
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string. */
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extern int signo_max (void);
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/* Return a signal message string for a signal number
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(e.g., strsignal (SIGHUP) returns something like "Hangup"). */
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/* This is commented out as it can conflict with one in system headers.
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We still document its existence though. */
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/*extern const char *strsignal (int);*/
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/* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
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"SIGHUP"). */
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extern const char *strsigno (int);
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/* Given the name of a signal, return its number. */
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extern int strtosigno (const char *);
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/* Register a function to be run by xexit. Returns 0 on success. */
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extern int xatexit (void (*fn) (void));
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/* Exit, calling all the functions registered with xatexit. */
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extern void xexit (int status) ATTRIBUTE_NORETURN;
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/* Set the program name used by xmalloc. */
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extern void xmalloc_set_program_name (const char *);
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/* Report an allocation failure. */
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extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN;
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/* Allocate memory without fail. If malloc fails, this will print a
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message to stderr (using the name set by xmalloc_set_program_name,
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if any) and then call xexit. */
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extern PTR xmalloc (size_t) ATTRIBUTE_MALLOC;
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/* Reallocate memory without fail. This works like xmalloc. Note,
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realloc type functions are not suitable for attribute malloc since
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they may return the same address across multiple calls. */
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extern PTR xrealloc (PTR, size_t);
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/* Allocate memory without fail and set it to zero. This works like
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xmalloc. */
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extern PTR xcalloc (size_t, size_t) ATTRIBUTE_MALLOC;
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/* Copy a string into a memory buffer without fail. */
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extern char *xstrdup (const char *) ATTRIBUTE_MALLOC;
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/* Copy at most N characters from string into a buffer without fail. */
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extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC;
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/* Copy an existing memory buffer to a new memory buffer without fail. */
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extern PTR xmemdup (const PTR, size_t, size_t) ATTRIBUTE_MALLOC;
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/* Physical memory routines. Return values are in BYTES. */
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extern double physmem_total (void);
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extern double physmem_available (void);
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/* These macros provide a K&R/C89/C++-friendly way of allocating structures
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with nice encapsulation. The XDELETE*() macros are technically
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superfluous, but provided here for symmetry. Using them consistently
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makes it easier to update client code to use different allocators such
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as new/delete and new[]/delete[]. */
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/* Scalar allocators. */
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#define XNEW(T) ((T *) xmalloc (sizeof (T)))
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#define XCNEW(T) ((T *) xcalloc (1, sizeof (T)))
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#define XDELETE(P) free ((void*) (P))
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/* Array allocators. */
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#define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N)))
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#define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T)))
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#define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N)))
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#define XDELETEVEC(P) free ((void*) (P))
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/* Allocators for variable-sized structures and raw buffers. */
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#define XNEWVAR(T, S) ((T *) xmalloc ((S)))
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#define XCNEWVAR(T, S) ((T *) xcalloc (1, (S)))
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#define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S)))
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/* Type-safe obstack allocator. */
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#define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T)))
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/* hex character manipulation routines */
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#define _hex_array_size 256
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#define _hex_bad 99
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extern const unsigned char _hex_value[_hex_array_size];
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extern void hex_init (void);
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#define hex_p(c) (hex_value (c) != _hex_bad)
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/* If you change this, note well: Some code relies on side effects in
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the argument being performed exactly once. */
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#define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)])
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/* Definitions used by the pexecute routine. */
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#define PEXECUTE_FIRST 1
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#define PEXECUTE_LAST 2
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#define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST)
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#define PEXECUTE_SEARCH 4
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#define PEXECUTE_VERBOSE 8
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/* Execute a program. */
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extern int pexecute (const char *, char * const *, const char *,
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const char *, char **, char **, int);
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/* Wait for pexecute to finish. */
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extern int pwait (int, int *, int);
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#if !HAVE_DECL_ASPRINTF
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/* Like sprintf but provides a pointer to malloc'd storage, which must
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be freed by the caller. */
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extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2;
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#endif
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#if !HAVE_DECL_VASPRINTF
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/* Like vsprintf but provides a pointer to malloc'd storage, which
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must be freed by the caller. */
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extern int vasprintf (char **, const char *, va_list)
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ATTRIBUTE_PRINTF(2,0);
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#endif
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#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
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/* Drastically simplified alloca configurator. If we're using GCC,
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we use __builtin_alloca; otherwise we use the C alloca. The C
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alloca is always available. You can override GCC by defining
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USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is
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also set/unset as it is often used to indicate whether code needs
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to call alloca(0). */
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extern PTR C_alloca (size_t) ATTRIBUTE_MALLOC;
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#undef alloca
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#if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA
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# define alloca(x) __builtin_alloca(x)
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# undef C_ALLOCA
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# define ASTRDUP(X) \
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(__extension__ ({ const char *const libiberty_optr = (X); \
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const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \
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char *const libiberty_nptr = (char *const) alloca (libiberty_len); \
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(char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); }))
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#else
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# define alloca(x) C_alloca(x)
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# undef USE_C_ALLOCA
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# define USE_C_ALLOCA 1
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# undef C_ALLOCA
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# define C_ALLOCA 1
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extern const char *libiberty_optr;
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extern char *libiberty_nptr;
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extern unsigned long libiberty_len;
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# define ASTRDUP(X) \
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(libiberty_optr = (X), \
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libiberty_len = strlen (libiberty_optr) + 1, \
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libiberty_nptr = (char *) alloca (libiberty_len), \
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(char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len))
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* ! defined (LIBIBERTY_H) */
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