328 lines
11 KiB
C
328 lines
11 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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#ifdef ANSI_PROTOTYPES
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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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#endif
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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 PARAMS ((const char *)) ATTRIBUTE_MALLOC;
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/* Free a vector returned by buildargv. */
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extern void freeargv PARAMS ((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 PARAMS ((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 (HAVE_DECL_BASENAME)
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extern char *basename PARAMS ((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 PARAMS ((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 PARAMS ((const char *, ...)) ATTRIBUTE_MALLOC;
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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 PARAMS ((char *, const char *, ...)) ATTRIBUTE_MALLOC;
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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 PARAMS ((const char *, ...));
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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 PARAMS ((char *, const char *, ...));
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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 PARAMS ((const char *, ...));
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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 PARAMS ((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 PARAMS ((void));
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/* Get the amount of time the process has run, in microseconds. */
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extern long get_run_time PARAMS ((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 PARAMS ((const char *, const char *,
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const char *));
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/* Choose a temporary directory to use for scratch files. */
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extern char *choose_temp_base PARAMS ((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 PARAMS ((const char *)) ATTRIBUTE_MALLOC;
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/* Allocate memory filled with spaces. Allocates using malloc. */
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extern const char *spaces PARAMS ((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 PARAMS ((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 PARAMS ((int));
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/* Given the name of an errno value, return the value. */
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extern int strtoerrno PARAMS ((const char *));
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/* ANSI's strerror(), but more robust. */
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extern char *xstrerror PARAMS ((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 PARAMS ((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 PARAMS ((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 PARAMS ((int));
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/* Given the name of a signal, return its number. */
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extern int strtosigno PARAMS ((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 PARAMS ((void (*fn) (void)));
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/* Exit, calling all the functions registered with xatexit. */
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extern void xexit PARAMS ((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 PARAMS ((const char *));
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/* Report an allocation failure. */
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extern void xmalloc_failed PARAMS ((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 PARAMS ((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 PARAMS ((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 PARAMS ((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 PARAMS ((const char *)) 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 PARAMS ((const PTR, size_t, size_t)) ATTRIBUTE_MALLOC;
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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 char _hex_value[_hex_array_size];
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extern void hex_init PARAMS ((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) (_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 PARAMS ((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 PARAMS ((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 PARAMS ((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 PARAMS ((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 PARAMS ((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 = 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 = 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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