/* general.h -- defines that everybody likes to use. */
-/* Copyright (C) 1993 Free Software Foundation, Inc.
+/* Copyright (C) 1993-2004 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
You should have received a copy of the GNU General Public License along
with Bash; see the file COPYING. If not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
-#if !defined (_GENERAL_H)
-#define _GENERAL_H
+#if !defined (_GENERAL_H_)
+#define _GENERAL_H_
#include "stdc.h"
-/* just to make sure */
-#if defined (HAVE_UNISTD_H)
-# ifdef CRAY
-# define word __word
-# endif
-# include <unistd.h>
-# ifdef CRAY
-# undef word
+#include "bashtypes.h"
+#include "chartypes.h"
+
+#if defined (HAVE_SYS_RESOURCE_H) && defined (RLIMTYPE)
+# if defined (HAVE_SYS_TIME_H)
+# include <sys/time.h>
# endif
+# include <sys/resource.h>
+#endif
+
+#if defined (HAVE_STRING_H)
+# include <string.h>
+#else
+# include <strings.h>
+#endif /* !HAVE_STRING_H */
+
+#if defined (HAVE_LIMITS_H)
+# include <limits.h>
#endif
+#include "xmalloc.h"
+
+/* NULL pointer type. */
#if !defined (NULL)
# if defined (__STDC__)
# define NULL ((void *) 0)
# endif /* !__STDC__ */
#endif /* !NULL */
-#if defined (HAVE_STRING_H)
-# include <string.h>
-#else
-# include <strings.h>
-#endif /* !HAVE_STRING_H */
+/* Hardly used anymore */
+#define pointer_to_int(x) (int)((char *)x - (char *)0)
-#define pointer_to_int(x) (int)((long)(x))
+#if defined (alpha) && defined (__GNUC__) && !defined (strchr) && !defined (__STDC__)
+extern char *strchr (), *strrchr ();
+#endif
+
+#if !defined (strcpy) && (defined (HAVE_DECL_STRCPY) && !HAVE_DECL_STRCPY)
+extern char *strcpy __P((char *, const char *));
+#endif
#if !defined (savestring)
- extern char *xmalloc ();
-# if !defined (strcpy)
- extern char *strcpy ();
-# endif
# define savestring(x) (char *)strcpy (xmalloc (1 + strlen (x)), (x))
#endif
+#ifndef member
+# define member(c, s) ((c) ? ((char *)xstrchr ((s), (c)) != (char *)NULL) : 0)
+#endif
+
#ifndef whitespace
#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
#endif
-#ifndef digit
-#define digit(c) ((c) >= '0' && (c) <= '9')
+#ifndef CHAR_MAX
+# ifdef __CHAR_UNSIGNED__
+# define CHAR_MAX 0xff
+# else
+# define CHAR_MAX 0x7f
+# endif
#endif
-#ifndef isletter
-#define isletter(c) (((c) >= 'A' && (c) <= 'Z') || ((c) >= 'a' && (c) <= 'z'))
+#ifndef CHAR_BIT
+# define CHAR_BIT 8
#endif
-#ifndef digit_value
-#define digit_value(c) ((c) - '0')
-#endif
+/* Nonzero if the integer type T is signed. */
+#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+
+/* Bound on length of the string representing an integer value of type T.
+ Subtract one for the sign bit if T is signed;
+ 302 / 1000 is log10 (2) rounded up;
+ add one for integer division truncation;
+ add one more for a minus sign if t is signed. */
+#define INT_STRLEN_BOUND(t) \
+ ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 \
+ + 1 + TYPE_SIGNED (t))
+
+
+/* Define exactly what a legal shell identifier consists of. */
+#define legal_variable_starter(c) (ISALPHA(c) || (c == '_'))
+#define legal_variable_char(c) (ISALNUM(c) || c == '_')
/* Definitions used in subst.c and by the `read' builtin for field
splitting. */
#define spctabnl(c) ((c) == ' ' || (c) == '\t' || (c) == '\n')
-#if !defined (__STDC__) && !defined (strchr)
-extern char *strchr (), *strrchr ();
-#endif /* !strchr */
-
-#ifndef member
-# if defined (alpha) && defined (__GNUC__) /* XXX */
- extern char *strchr ();
-# endif
-# define member(c, s) ((c) ? ((char *)strchr ((s), (c)) != (char *)NULL) : 0)
-#endif
-
/* All structs which contain a `next' field should have that field
as the first field in the struct. This means that functions
can be written to handle the general case for linked lists. */
/* A macro to avoid making an uneccessary function call. */
#define REVERSE_LIST(list, type) \
- ((list && list->next) ? (type)reverse_list ((GENERIC_LIST *)list) : (type)(list))
+ ((list && list->next) ? (type)list_reverse ((GENERIC_LIST *)list) \
+ : (type)(list))
#if __GNUC__ > 1
-# define FASTCOPY(s, d, n) __builtin_memcpy (d, s, n)
+# define FASTCOPY(s, d, n) __builtin_memcpy ((d), (s), (n))
#else /* !__GNUC__ */
-# if defined (USG) && !defined (HAVE_BCOPY)
-# if defined (MEMMOVE_MISSING)
-# define FASTCOPY(s, d, n) memcpy (d, s, n)
+# if !defined (HAVE_BCOPY)
+# if !defined (HAVE_MEMMOVE)
+# define FASTCOPY(s, d, n) memcpy ((d), (s), (n))
# else
-# define FASTCOPY(s, d, n) memmove (d, s, n)
-# endif /* !MEMMOVE_MISSING */
-# else
-# define FASTCOPY(s, d, n) bcopy (s, d, n)
-# endif /* !USG || HAVE_BCOPY */
+# define FASTCOPY(s, d, n) memmove ((d), (s), (n))
+# endif /* !HAVE_MEMMOVE */
+# else /* HAVE_BCOPY */
+# define FASTCOPY(s, d, n) bcopy ((s), (d), (n))
+# endif /* HAVE_BCOPY */
#endif /* !__GNUC__ */
/* String comparisons that possibly save a function call each. */
#define STREQ(a, b) ((a)[0] == (b)[0] && strcmp(a, b) == 0)
-#define STREQN(a, b, n) ((a)[0] == (b)[0] && strncmp(a, b, n) == 0)
+#define STREQN(a, b, n) ((n == 0) ? (1) \
+ : ((a)[0] == (b)[0] && strncmp(a, b, n) == 0))
/* More convenience definitions that possibly save system or libc calls. */
#define STRLEN(s) (((s) && (s)[0]) ? ((s)[1] ? ((s)[2] ? strlen(s) : 2) : 1) : 0)
#define FREE(s) do { if (s) free (s); } while (0)
-#define MEMBER(c, s) (((c) && !(s)[1] && c == s[0]) || (member(c, s)))
-
-/* What type is a `generic' pointer? This is used as the first argument
- to xrealloc. */
-#if defined (__STDC__)
-typedef void *GENPTR;
-#else
-typedef char *GENPTR;
-#endif
+#define MEMBER(c, s) (((c) && c == (s)[0] && !(s)[1]) || (member(c, s)))
+
+/* A fairly hairy macro to check whether an allocated string has more room,
+ and to resize it using xrealloc if it does not.
+ STR is the string (char *)
+ CIND is the current index into the string (int)
+ ROOM is the amount of additional room we need in the string (int)
+ CSIZE is the currently-allocated size of STR (int)
+ SINCR is how much to increment CSIZE before calling xrealloc (int) */
+
+#define RESIZE_MALLOCED_BUFFER(str, cind, room, csize, sincr) \
+ do { \
+ if ((cind) + (room) >= csize) \
+ { \
+ while ((cind) + (room) >= csize) \
+ csize += (sincr); \
+ str = xrealloc (str, csize); \
+ } \
+ } while (0)
/* Function pointers can be declared as (Function *)foo. */
-#if !defined (__FUNCTION_DEF)
-# define __FUNCTION_DEF
+#if !defined (_FUNCTION_DEF)
+# define _FUNCTION_DEF
typedef int Function ();
typedef void VFunction ();
-typedef char *CPFunction ();
-typedef char **CPPFunction ();
+typedef char *CPFunction (); /* no longer used */
+typedef char **CPPFunction (); /* no longer used */
#endif /* _FUNCTION_DEF */
+#ifndef SH_FUNCTION_TYPEDEF
+# define SH_FUNCTION_TYPEDEF
+
+/* Shell function typedefs with prototypes */
+/* `Generic' function pointer typedefs */
+
+typedef int sh_intfunc_t __P((int));
+typedef int sh_ivoidfunc_t __P((void));
+typedef int sh_icpfunc_t __P((char *));
+typedef int sh_icppfunc_t __P((char **));
+typedef int sh_iptrfunc_t __P((PTR_T));
+
+typedef void sh_voidfunc_t __P((void));
+typedef void sh_vintfunc_t __P((int));
+typedef void sh_vcpfunc_t __P((char *));
+typedef void sh_vcppfunc_t __P((char **));
+typedef void sh_vptrfunc_t __P((PTR_T));
+
+typedef int sh_wdesc_func_t __P((WORD_DESC *));
+typedef int sh_wlist_func_t __P((WORD_LIST *));
+
+typedef int sh_glist_func_t __P((GENERIC_LIST *));
+
+typedef char *sh_string_func_t __P((char *)); /* like savestring, et al. */
+
+typedef int sh_msg_func_t __P((const char *, ...)); /* printf(3)-like */
+typedef void sh_vmsg_func_t __P((const char *, ...)); /* printf(3)-like */
+
+/* Specific function pointer typedefs. Most of these could be done
+ with #defines. */
+typedef void sh_sv_func_t __P((char *)); /* sh_vcpfunc_t */
+typedef void sh_free_func_t __P((PTR_T)); /* sh_vptrfunc_t */
+typedef void sh_resetsig_func_t __P((int)); /* sh_vintfunc_t */
+
+typedef int sh_ignore_func_t __P((const char *)); /* sh_icpfunc_t */
+
+typedef int sh_assign_func_t __P((const char *)); /* sh_icpfunc_t */
+typedef int sh_wassign_func_t __P((WORD_DESC *));
+
+typedef int sh_builtin_func_t __P((WORD_LIST *)); /* sh_wlist_func_t */
+
+#endif /* SH_FUNCTION_TYPEDEF */
+
#define NOW ((time_t) time ((time_t *) 0))
/* Some defines for calling file status functions. */
#define FS_EXECABLE 0x2
#define FS_EXEC_PREFERRED 0x4
#define FS_EXEC_ONLY 0x8
+#define FS_DIRECTORY 0x10
+#define FS_NODIRS 0x20
+#define FS_READABLE 0x40
-/* Posix and USG systems do not guarantee to restart a read () that is
- interrupted by a signal. */
-#if defined (USG) || defined (_POSIX_VERSION)
-# define NO_READ_RESTART_ON_SIGNAL
-#endif /* USG || _POSIX_VERSION */
-
-/* Here is a definition for set_signal_handler () which simply expands to
- a call to signal () for non-Posix systems. The code for set_signal_handler
- in the Posix case resides in general.c. */
+/* Default maximum for move_to_high_fd */
+#define HIGH_FD_MAX 256
-#if defined (VOID_SIGHANDLER)
-# define sighandler void
+/* The type of function passed as the fourth argument to qsort(3). */
+#ifdef __STDC__
+typedef int QSFUNC (const void *, const void *);
#else
-# define sighandler int
-#endif /* !VOID_SIGHANDLER */
+typedef int QSFUNC ();
+#endif
-typedef sighandler SigHandler ();
+/* Some useful definitions for Unix pathnames. Argument convention:
+ x == string, c == character */
-#if !defined (_POSIX_VERSION)
-# define set_signal_handler(sig, handler) (SigHandler *)signal (sig, handler)
-#else
-extern SigHandler *set_signal_handler ();
-#endif /* _POSIX_VERSION */
+#if !defined (__CYGWIN__)
+# define ABSPATH(x) ((x)[0] == '/')
+# define RELPATH(x) ((x)[0] != '/')
+#else /* __CYGWIN__ */
+# define ABSPATH(x) (((x)[0] && ISALPHA((unsigned char)(x)[0]) && (x)[1] == ':') || ISDIRSEP((x)[0]))
+# define RELPATH(x) (ABSPATH(x) == 0)
+#endif /* __CYGWIN__ */
-/* This function is defined in trap.c. */
-extern SigHandler *set_sigint_handler __P((void));
+#define ROOTEDPATH(x) (ABSPATH(x))
+
+#define DIRSEP '/'
+#if !defined (__CYGWIN__)
+# define ISDIRSEP(c) ((c) == '/')
+#else
+# define ISDIRSEP(c) ((c) == '/' || (c) == '\\')
+#endif /* __CYGWIN__ */
+#define PATHSEP(c) (ISDIRSEP(c) || (c) == 0)
+
+#if 0
+/* Declarations for functions defined in xmalloc.c */
+extern PTR_T xmalloc __P((size_t));
+extern PTR_T xrealloc __P((void *, size_t));
+extern void xfree __P((void *));
+#endif
/* Declarations for functions defined in general.c */
-extern char *xmalloc __P((int));
-extern char *xrealloc __P((void *, int));
-extern void xfree __P((char *));
-extern char *itos __P((int));
+extern void posix_initialize __P((int));
+
+#if defined (RLIMTYPE)
+extern RLIMTYPE string_to_rlimtype __P((char *));
+extern void print_rlimtype __P((RLIMTYPE, int));
+#endif
+
extern int all_digits __P((char *));
-extern long string_to_long __P((char *));
+extern int legal_number __P((char *, intmax_t *));
extern int legal_identifier __P((char *));
extern int check_identifier __P((WORD_DESC *, int));
-extern void unset_nodelay_mode __P((int));
-extern void map_over_words __P((WORD_LIST *, Function *));
-
-extern void map_over_list __P((GENERIC_LIST *, Function *));
-extern GENERIC_LIST *reverse_list ();
-extern GENERIC_LIST *delete_element ();
-extern GENERIC_LIST *list_append ();
-extern int list_length ();
-extern int qsort_string_compare ();
-
-extern int find_name_in_list __P((char *, char **));
-extern int array_len __P((char **));
-extern void free_array __P((char **));
-extern char **copy_array __P((char **));
-extern void strip_leading __P((char *));
-extern void strip_trailing __P((char *, int));
-extern char *canonicalize_pathname __P((char *));
+extern int legal_alias_name __P((char *, int));
+extern int assignment __P((const char *, int));
+
+extern int sh_unset_nodelay_mode __P((int));
+extern int sh_validfd __P((int));
+extern void check_dev_tty __P((void));
+extern int move_to_high_fd __P((int, int, int));
+extern int check_binary_file __P((char *, int));
+
+#ifdef _POSIXSTAT_H_
+extern int same_file __P((char *, char *, struct stat *, struct stat *));
+#endif
+
+extern int file_isdir __P((char *));
+extern int file_iswdir __P((char *));
+extern int absolute_pathname __P((const char *));
+extern int absolute_program __P((const char *));
+
extern char *make_absolute __P((char *, char *));
-extern int absolute_pathname __P((char *));
-extern int absolute_program __P((char *));
extern char *base_pathname __P((char *));
extern char *full_pathname __P((char *));
-extern char *strindex __P((char *, char *));
-extern void set_lines_and_columns __P((int, int));
-extern void xbcopy __P((char *, char *, int));
extern char *polite_directory_format __P((char *));
-extern void tilde_initialize __P((void));
-#if !defined (strerror)
-extern char *strerror __P((int));
-#endif
+extern char *extract_colon_unit __P((char *, int *));
-#if defined (RLIMTYPE)
-extern RLIMTYPE string_to_rlimtype __P((char *));
-extern void print_rlimtype __P((RLIMTYPE, int));
-#endif
-
-#if !defined (HAVE_STRCASECMP)
-extern int strnicmp __P((char *, char *, int));
-extern int stricmp __P((char *, char *));
-#else /* HAVE_STRCASECMP */
-# define stricmp strcasecmp
-# define strnicmp strncasecmp
-#endif /* HAVE_STRCASECMP */
-
-extern int dup2 __P((int, int));
-extern char *getwd __P((char *));
-extern int getdtablesize __P((void));
+extern void tilde_initialize __P((void));
+extern char *bash_tilde_find_word __P((const char *, int, int *));
+extern char *bash_tilde_expand __P((const char *, int));
-#if defined (USG) && !defined (HAVE_GETHOSTNAME)
-extern int gethostname __P((char *, int));
-#endif /* USG && !HAVE_GETHOSTNAME */
+extern int group_member __P((gid_t));
+extern char **get_group_list __P((int *));
+extern int *get_group_array __P((int *));
-#endif /* _GENERAL_H */
+#endif /* _GENERAL_H_ */
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