1 /* Function declarations for libiberty.
2 Written by Cygnus Support, 1994.
4 The libiberty library provides a number of functions which are
5 missing on some operating systems. We do not declare those here,
6 to avoid conflicts with the system header files on operating
7 systems that do support those functions. In this file we only
8 declare those functions which are specific to libiberty. */
19 /* Build an argument vector from a string. Allocates memory using
20 malloc. Use freeargv to free the vector. */
22 extern char **buildargv
PARAMS ((char *)) ATTRIBUTE_MALLOC
;
24 /* Free a vector returned by buildargv. */
26 extern void freeargv
PARAMS ((char **));
28 /* Duplicate an argument vector. Allocates memory using malloc. Use
29 freeargv to free the vector. */
31 extern char **dupargv
PARAMS ((char **)) ATTRIBUTE_MALLOC
;
34 /* Return the last component of a path name. Note that we can't use a
35 prototype here because the parameter is declared inconsistently
36 across different systems, sometimes as "char *" and sometimes as
39 /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is
40 undefined, we haven't run the autoconf check so provide the
41 declaration without arguments. If it is 0, we checked and failed
42 to find the declaration so provide a fully prototyped one. If it
43 is 1, we found it so don't provide any declaration at all. */
44 #if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || (defined (HAVE_DECL_BASENAME) && !HAVE_DECL_BASENAME)
45 extern char *basename
PARAMS ((const char *));
47 # if !defined (HAVE_DECL_BASENAME)
48 extern char *basename ();
52 /* Concatenate an arbitrary number of strings, up to (char *) NULL.
53 Allocates memory using xmalloc. */
55 extern char *concat
PARAMS ((const char *, ...)) ATTRIBUTE_MALLOC
;
57 /* Check whether two file descriptors refer to the same file. */
59 extern int fdmatch
PARAMS ((int fd1
, int fd2
));
61 /* Get the working directory. The result is cached, so don't call
62 chdir() between calls to getpwd(). */
64 extern char * getpwd
PARAMS ((void));
66 /* Get the amount of time the process has run, in microseconds. */
68 extern long get_run_time
PARAMS ((void));
70 /* Choose a temporary directory to use for scratch files. */
72 extern char *choose_temp_base
PARAMS ((void)) ATTRIBUTE_MALLOC
;
74 /* Return a temporary file name or NULL if unable to create one. */
76 extern char *make_temp_file
PARAMS ((const char *)) ATTRIBUTE_MALLOC
;
78 /* Allocate memory filled with spaces. Allocates using malloc. */
80 extern const char *spaces
PARAMS ((int count
));
82 /* Return the maximum error number for which strerror will return a
85 extern int errno_max
PARAMS ((void));
87 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns
90 extern const char *strerrno
PARAMS ((int));
92 /* Given the name of an errno value, return the value. */
94 extern int strtoerrno
PARAMS ((const char *));
96 /* ANSI's strerror(), but more robust. */
98 extern char *xstrerror
PARAMS ((int));
100 /* Return the maximum signal number for which strsignal will return a
103 extern int signo_max
PARAMS ((void));
105 /* Return a signal message string for a signal number
106 (e.g., strsignal (SIGHUP) returns something like "Hangup"). */
107 /* This is commented out as it can conflict with one in system headers.
108 We still document its existence though. */
110 /*extern const char *strsignal PARAMS ((int));*/
112 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
115 extern const char *strsigno
PARAMS ((int));
117 /* Given the name of a signal, return its number. */
119 extern int strtosigno
PARAMS ((const char *));
121 /* Register a function to be run by xexit. Returns 0 on success. */
123 extern int xatexit
PARAMS ((void (*fn
) (void)));
125 /* Exit, calling all the functions registered with xatexit. */
127 extern void xexit
PARAMS ((int status
)) ATTRIBUTE_NORETURN
;
129 /* Set the program name used by xmalloc. */
131 extern void xmalloc_set_program_name
PARAMS ((const char *));
133 /* Allocate memory without fail. If malloc fails, this will print a
134 message to stderr (using the name set by xmalloc_set_program_name,
135 if any) and then call xexit. */
137 #ifdef ANSI_PROTOTYPES
138 /* Get a definition for size_t. */
140 /* Get a definition for va_list. */
143 extern PTR xmalloc
PARAMS ((size_t)) ATTRIBUTE_MALLOC
;
145 /* Reallocate memory without fail. This works like xmalloc. Note,
146 realloc type functions are not suitable for attribute malloc since
147 they may return the same address across multiple calls. */
149 extern PTR xrealloc
PARAMS ((PTR
, size_t));
151 /* Allocate memory without fail and set it to zero. This works like
154 extern PTR xcalloc
PARAMS ((size_t, size_t)) ATTRIBUTE_MALLOC
;
156 /* Copy a string into a memory buffer without fail. */
158 extern char *xstrdup
PARAMS ((const char *)) ATTRIBUTE_MALLOC
;
160 /* Copy an existing memory buffer to a new memory buffer without fail. */
162 extern PTR xmemdup
PARAMS ((const PTR
, size_t, size_t)) ATTRIBUTE_MALLOC
;
164 /* hex character manipulation routines */
166 #define _hex_array_size 256
168 extern char _hex_value
[_hex_array_size
];
169 extern void hex_init
PARAMS ((void));
170 #define hex_p(c) (hex_value (c) != _hex_bad)
171 /* If you change this, note well: Some code relies on side effects in
172 the argument being performed exactly once. */
173 #define hex_value(c) (_hex_value[(unsigned char) (c)])
175 /* Definitions used by the pexecute routine. */
177 #define PEXECUTE_FIRST 1
178 #define PEXECUTE_LAST 2
179 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST)
180 #define PEXECUTE_SEARCH 4
181 #define PEXECUTE_VERBOSE 8
183 /* Execute a program. */
185 extern int pexecute
PARAMS ((const char *, char * const *, const char *,
186 const char *, char **, char **, int));
188 /* Wait for pexecute to finish. */
190 extern int pwait
PARAMS ((int, int *, int));
192 /* Like sprintf but provides a pointer to malloc'd storage, which must
193 be freed by the caller. */
195 extern int asprintf
PARAMS ((char **, const char *, ...)) ATTRIBUTE_PRINTF_2
;
197 /* Like vsprintf but provides a pointer to malloc'd storage, which
198 must be freed by the caller. */
200 extern int vasprintf
PARAMS ((char **, const char *, va_list))
201 ATTRIBUTE_PRINTF(2,0);
208 #endif /* ! defined (LIBIBERTY_H) */
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