Imported from ../bash-1.14.7.tar.gz.
This commit is contained in:
Jari Aalto
commit
726f63884d
402 changed files with 150297 additions and 0 deletions
247
general.h
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247
general.h
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/* general.h -- defines that everybody likes to use. */
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/* Copyright (C) 1993 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with Bash; see the file COPYING. If not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (_GENERAL_H)
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#define _GENERAL_H
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#include "stdc.h"
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/* just to make sure */
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#if defined (HAVE_UNISTD_H)
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# ifdef CRAY
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# define word __word
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# endif
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# include <unistd.h>
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# ifdef CRAY
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# undef word
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# endif
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#endif
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#if !defined (NULL)
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# if defined (__STDC__)
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# define NULL ((void *) 0)
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# else
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# define NULL 0x0
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# endif /* !__STDC__ */
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#endif /* !NULL */
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#if defined (HAVE_STRING_H)
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# include <string.h>
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#else
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# include <strings.h>
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#endif /* !HAVE_STRING_H */
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#define pointer_to_int(x) (int)((long)(x))
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#if !defined (savestring)
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extern char *xmalloc ();
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# if !defined (strcpy)
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extern char *strcpy ();
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# endif
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# define savestring(x) (char *)strcpy (xmalloc (1 + strlen (x)), (x))
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#endif
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#ifndef whitespace
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#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
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#endif
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#ifndef digit
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#define digit(c) ((c) >= '0' && (c) <= '9')
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#endif
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#ifndef isletter
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#define isletter(c) (((c) >= 'A' && (c) <= 'Z') || ((c) >= 'a' && (c) <= 'z'))
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#endif
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#ifndef digit_value
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#define digit_value(c) ((c) - '0')
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#endif
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/* Definitions used in subst.c and by the `read' builtin for field
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splitting. */
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#define spctabnl(c) ((c) == ' ' || (c) == '\t' || (c) == '\n')
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#if !defined (__STDC__) && !defined (strchr)
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extern char *strchr (), *strrchr ();
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#endif /* !strchr */
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#ifndef member
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# if defined (alpha) && defined (__GNUC__) /* XXX */
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extern char *strchr ();
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# endif
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# define member(c, s) ((c) ? ((char *)strchr ((s), (c)) != (char *)NULL) : 0)
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#endif
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/* All structs which contain a `next' field should have that field
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as the first field in the struct. This means that functions
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can be written to handle the general case for linked lists. */
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typedef struct g_list {
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struct g_list *next;
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} GENERIC_LIST;
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/* Here is a generic structure for associating character strings
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with integers. It is used in the parser for shell tokenization. */
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typedef struct {
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char *word;
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int token;
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} STRING_INT_ALIST;
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/* A macro to avoid making an uneccessary function call. */
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#define REVERSE_LIST(list, type) \
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((list && list->next) ? (type)reverse_list ((GENERIC_LIST *)list) : (type)(list))
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#if __GNUC__ > 1
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# define FASTCOPY(s, d, n) __builtin_memcpy (d, s, n)
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#else /* !__GNUC__ */
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# if defined (USG) && !defined (HAVE_BCOPY)
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# if defined (MEMMOVE_MISSING)
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# define FASTCOPY(s, d, n) memcpy (d, s, n)
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# else
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# define FASTCOPY(s, d, n) memmove (d, s, n)
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# endif /* !MEMMOVE_MISSING */
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# else
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# define FASTCOPY(s, d, n) bcopy (s, d, n)
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# endif /* !USG || HAVE_BCOPY */
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#endif /* !__GNUC__ */
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/* String comparisons that possibly save a function call each. */
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#define STREQ(a, b) ((a)[0] == (b)[0] && strcmp(a, b) == 0)
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#define STREQN(a, b, n) ((a)[0] == (b)[0] && strncmp(a, b, n) == 0)
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/* More convenience definitions that possibly save system or libc calls. */
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#define STRLEN(s) (((s) && (s)[0]) ? ((s)[1] ? ((s)[2] ? strlen(s) : 2) : 1) : 0)
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#define FREE(s) do { if (s) free (s); } while (0)
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#define MEMBER(c, s) (((c) && !(s)[1] && c == s[0]) || (member(c, s)))
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/* What type is a `generic' pointer? This is used as the first argument
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to xrealloc. */
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#if defined (__STDC__)
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typedef void *GENPTR;
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#else
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typedef char *GENPTR;
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#endif
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/* Function pointers can be declared as (Function *)foo. */
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#if !defined (__FUNCTION_DEF)
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# define __FUNCTION_DEF
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typedef int Function ();
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typedef void VFunction ();
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typedef char *CPFunction ();
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typedef char **CPPFunction ();
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#endif /* _FUNCTION_DEF */
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#define NOW ((time_t) time ((time_t *) 0))
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/* Some defines for calling file status functions. */
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#define FS_EXISTS 0x1
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#define FS_EXECABLE 0x2
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#define FS_EXEC_PREFERRED 0x4
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#define FS_EXEC_ONLY 0x8
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/* Posix and USG systems do not guarantee to restart a read () that is
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interrupted by a signal. */
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#if defined (USG) || defined (_POSIX_VERSION)
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# define NO_READ_RESTART_ON_SIGNAL
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#endif /* USG || _POSIX_VERSION */
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/* Here is a definition for set_signal_handler () which simply expands to
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a call to signal () for non-Posix systems. The code for set_signal_handler
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in the Posix case resides in general.c. */
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#if defined (VOID_SIGHANDLER)
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# define sighandler void
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#else
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# define sighandler int
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#endif /* !VOID_SIGHANDLER */
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typedef sighandler SigHandler ();
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#if !defined (_POSIX_VERSION)
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# define set_signal_handler(sig, handler) (SigHandler *)signal (sig, handler)
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#else
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extern SigHandler *set_signal_handler ();
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#endif /* _POSIX_VERSION */
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/* This function is defined in trap.c. */
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extern SigHandler *set_sigint_handler __P((void));
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/* Declarations for functions defined in general.c */
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extern char *xmalloc __P((int));
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extern char *xrealloc __P((void *, int));
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extern void xfree __P((char *));
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extern char *itos __P((int));
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extern int all_digits __P((char *));
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extern long string_to_long __P((char *));
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extern int legal_identifier __P((char *));
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extern int check_identifier __P((WORD_DESC *, int));
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extern void unset_nodelay_mode __P((int));
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extern void map_over_words __P((WORD_LIST *, Function *));
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extern void map_over_list __P((GENERIC_LIST *, Function *));
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extern GENERIC_LIST *reverse_list ();
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extern GENERIC_LIST *delete_element ();
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extern GENERIC_LIST *list_append ();
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extern int list_length ();
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extern int qsort_string_compare ();
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extern int find_name_in_list __P((char *, char **));
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extern int array_len __P((char **));
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extern void free_array __P((char **));
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extern char **copy_array __P((char **));
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extern void strip_leading __P((char *));
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extern void strip_trailing __P((char *, int));
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extern char *canonicalize_pathname __P((char *));
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extern char *make_absolute __P((char *, char *));
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extern int absolute_pathname __P((char *));
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extern int absolute_program __P((char *));
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extern char *base_pathname __P((char *));
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extern char *full_pathname __P((char *));
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extern char *strindex __P((char *, char *));
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extern void set_lines_and_columns __P((int, int));
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extern void xbcopy __P((char *, char *, int));
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extern char *polite_directory_format __P((char *));
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extern void tilde_initialize __P((void));
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#if !defined (strerror)
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extern char *strerror __P((int));
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#endif
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#if defined (RLIMTYPE)
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extern RLIMTYPE string_to_rlimtype __P((char *));
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extern void print_rlimtype __P((RLIMTYPE, int));
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#endif
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#if !defined (HAVE_STRCASECMP)
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extern int strnicmp __P((char *, char *, int));
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extern int stricmp __P((char *, char *));
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#else /* HAVE_STRCASECMP */
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# define stricmp strcasecmp
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# define strnicmp strncasecmp
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#endif /* HAVE_STRCASECMP */
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extern int dup2 __P((int, int));
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extern char *getwd __P((char *));
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extern int getdtablesize __P((void));
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#if defined (USG) && !defined (HAVE_GETHOSTNAME)
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extern int gethostname __P((char *, int));
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#endif /* USG && !HAVE_GETHOSTNAME */
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#endif /* _GENERAL_H */
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