233 lines
7.1 KiB
C
233 lines
7.1 KiB
C
/* Function declarations for libiberty.
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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 ((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 defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || (defined (HAVE_DECL_BASENAME) && !HAVE_DECL_BASENAME)
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extern char *basename PARAMS ((const char *));
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#else
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# if !defined (HAVE_DECL_BASENAME)
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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 char *lbasename PARAMS ((const char *));
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/* Concatenate an arbitrary number of strings, up to (char *) NULL.
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Allocates memory using xmalloc. */
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extern char *concat PARAMS ((const char *, ...)) ATTRIBUTE_MALLOC;
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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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/* 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 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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/* 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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/* 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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#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. */
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extern PTR C_alloca PARAMS((size_t));
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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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#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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#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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