mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
313 lines
6.6 KiB
C
313 lines
6.6 KiB
C
/* util.c -- readline utility functions */
|
|
|
|
/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU Readline Library, a library for
|
|
reading lines of text with interactive input and history editing.
|
|
|
|
The GNU Readline Library is free software; you can redistribute it
|
|
and/or modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 1, or
|
|
(at your option) any later version.
|
|
|
|
The GNU Readline Library is distributed in the hope that it will be
|
|
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
|
|
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
The GNU General Public License is often shipped with GNU software, and
|
|
is generally kept in a file called COPYING or LICENSE. If you do not
|
|
have a copy of the license, write to the Free Software Foundation,
|
|
675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
#define READLINE_LIBRARY
|
|
|
|
#if defined (HAVE_CONFIG_H)
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
#include <setjmp.h>
|
|
#include <ctype.h>
|
|
|
|
#if defined (HAVE_UNISTD_H)
|
|
# include <unistd.h> /* for _POSIX_VERSION */
|
|
#endif /* HAVE_UNISTD_H */
|
|
|
|
#if defined (HAVE_STDLIB_H)
|
|
# include <stdlib.h>
|
|
#else
|
|
# include "ansi_stdlib.h"
|
|
#endif /* HAVE_STDLIB_H */
|
|
|
|
/* System-specific feature definitions and include files. */
|
|
#include "rldefs.h"
|
|
|
|
#if defined (TIOCSTAT_IN_SYS_IOCTL)
|
|
# include <sys/ioctl.h>
|
|
#endif /* TIOCSTAT_IN_SYS_IOCTL */
|
|
|
|
/* Some standard library routines. */
|
|
#include "readline.h"
|
|
|
|
#define SWAP(s, e) do { int t; t = s; s = e; e = t; } while (0)
|
|
|
|
/* Pseudo-globals imported from readline.c */
|
|
extern int readline_echoing_p;
|
|
extern jmp_buf readline_top_level;
|
|
extern int rl_line_buffer_len;
|
|
extern Function *rl_last_func;
|
|
|
|
extern int _rl_defining_kbd_macro;
|
|
extern char *_rl_executing_macro;
|
|
|
|
/* Pseudo-global functions imported from other library files. */
|
|
extern void _rl_pop_executing_macro ();
|
|
extern void _rl_set_the_line ();
|
|
extern void _rl_init_argument ();
|
|
|
|
extern char *xmalloc (), *xrealloc ();
|
|
|
|
/* **************************************************************** */
|
|
/* */
|
|
/* Utility Functions */
|
|
/* */
|
|
/* **************************************************************** */
|
|
|
|
/* Return 0 if C is not a member of the class of characters that belong
|
|
in words, or 1 if it is. */
|
|
|
|
int _rl_allow_pathname_alphabetic_chars = 0;
|
|
static char *pathname_alphabetic_chars = "/-_=~.#$";
|
|
|
|
int
|
|
alphabetic (c)
|
|
int c;
|
|
{
|
|
if (ALPHABETIC (c))
|
|
return (1);
|
|
|
|
return (_rl_allow_pathname_alphabetic_chars &&
|
|
strchr (pathname_alphabetic_chars, c) != NULL);
|
|
}
|
|
|
|
/* How to abort things. */
|
|
int
|
|
_rl_abort_internal ()
|
|
{
|
|
ding ();
|
|
rl_clear_message ();
|
|
_rl_init_argument ();
|
|
rl_pending_input = 0;
|
|
|
|
_rl_defining_kbd_macro = 0;
|
|
while (_rl_executing_macro)
|
|
_rl_pop_executing_macro ();
|
|
|
|
rl_last_func = (Function *)NULL;
|
|
longjmp (readline_top_level, 1);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
rl_abort (count, key)
|
|
int count, key;
|
|
{
|
|
return (_rl_abort_internal ());
|
|
}
|
|
|
|
int
|
|
rl_tty_status (count, key)
|
|
int count, key;
|
|
{
|
|
#if defined (TIOCSTAT)
|
|
ioctl (1, TIOCSTAT, (char *)0);
|
|
rl_refresh_line ();
|
|
#else
|
|
ding ();
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/* Return a copy of the string between FROM and TO.
|
|
FROM is inclusive, TO is not. */
|
|
char *
|
|
rl_copy_text (from, to)
|
|
int from, to;
|
|
{
|
|
register int length;
|
|
char *copy;
|
|
|
|
/* Fix it if the caller is confused. */
|
|
if (from > to)
|
|
SWAP (from, to);
|
|
|
|
length = to - from;
|
|
copy = xmalloc (1 + length);
|
|
strncpy (copy, rl_line_buffer + from, length);
|
|
copy[length] = '\0';
|
|
return (copy);
|
|
}
|
|
|
|
/* Increase the size of RL_LINE_BUFFER until it has enough space to hold
|
|
LEN characters. */
|
|
void
|
|
rl_extend_line_buffer (len)
|
|
int len;
|
|
{
|
|
while (len >= rl_line_buffer_len)
|
|
{
|
|
rl_line_buffer_len += DEFAULT_BUFFER_SIZE;
|
|
rl_line_buffer = xrealloc (rl_line_buffer, rl_line_buffer_len);
|
|
}
|
|
|
|
_rl_set_the_line ();
|
|
}
|
|
|
|
/* **************************************************************** */
|
|
/* */
|
|
/* String Utility Functions */
|
|
/* */
|
|
/* **************************************************************** */
|
|
|
|
/* Determine if s2 occurs in s1. If so, return a pointer to the
|
|
match in s1. The compare is case insensitive. */
|
|
char *
|
|
_rl_strindex (s1, s2)
|
|
register char *s1, *s2;
|
|
{
|
|
register int i, l, len;
|
|
|
|
for (i = 0, l = strlen (s2), len = strlen (s1); (len - i) >= l; i++)
|
|
if (_rl_strnicmp (s1 + i, s2, l) == 0)
|
|
return (s1 + i);
|
|
return ((char *)NULL);
|
|
}
|
|
|
|
#if !defined (HAVE_STRCASECMP)
|
|
/* Compare at most COUNT characters from string1 to string2. Case
|
|
doesn't matter. */
|
|
int
|
|
_rl_strnicmp (string1, string2, count)
|
|
char *string1, *string2;
|
|
int count;
|
|
{
|
|
register char ch1, ch2;
|
|
|
|
while (count)
|
|
{
|
|
ch1 = *string1++;
|
|
ch2 = *string2++;
|
|
if (_rl_to_upper(ch1) == _rl_to_upper(ch2))
|
|
count--;
|
|
else
|
|
break;
|
|
}
|
|
return (count);
|
|
}
|
|
|
|
/* strcmp (), but caseless. */
|
|
int
|
|
_rl_stricmp (string1, string2)
|
|
char *string1, *string2;
|
|
{
|
|
register char ch1, ch2;
|
|
|
|
while (*string1 && *string2)
|
|
{
|
|
ch1 = *string1++;
|
|
ch2 = *string2++;
|
|
if (_rl_to_upper(ch1) != _rl_to_upper(ch2))
|
|
return (1);
|
|
}
|
|
return (*string1 - *string2);
|
|
}
|
|
#endif /* !HAVE_STRCASECMP */
|
|
|
|
/* Stupid comparison routine for qsort () ing strings. */
|
|
int
|
|
_rl_qsort_string_compare (s1, s2)
|
|
char **s1, **s2;
|
|
{
|
|
#if defined (HAVE_STRCOLL)
|
|
return (strcoll (*s1, *s2));
|
|
#else
|
|
int result;
|
|
|
|
result = **s1 - **s2;
|
|
if (result == 0)
|
|
result = strcmp (*s1, *s2);
|
|
|
|
return result;
|
|
#endif
|
|
}
|
|
|
|
#if !defined (SHELL)
|
|
/* Backwards compatibility, now that savestring has been removed from
|
|
all `public' readline header files. */
|
|
char *
|
|
rl_savestring (s)
|
|
char *s;
|
|
{
|
|
return ((char *)strcpy (xmalloc (1 + (int)strlen (s)), (s)));
|
|
}
|
|
#endif /* !SHELL */
|
|
|
|
/* Function equivalents for the macros defined in chartypes.h. */
|
|
#undef _rl_uppercase_p
|
|
int
|
|
_rl_uppercase_p (c)
|
|
int c;
|
|
{
|
|
return (isupper (c));
|
|
}
|
|
|
|
#undef _rl_lowercase_p
|
|
int
|
|
_rl_lowercase_p (c)
|
|
int c;
|
|
{
|
|
return (islower (c));
|
|
}
|
|
|
|
#undef _rl_pure_alphabetic
|
|
int
|
|
_rl_pure_alphabetic (c)
|
|
int c;
|
|
{
|
|
return (isupper (c) || islower (c));
|
|
}
|
|
|
|
#undef _rl_digit_p
|
|
int
|
|
_rl_digit_p (c)
|
|
int c;
|
|
{
|
|
return (isdigit (c));
|
|
}
|
|
|
|
#undef _rl_to_lower
|
|
int
|
|
_rl_to_lower (c)
|
|
int c;
|
|
{
|
|
return (isupper (c) ? tolower (c) : c);
|
|
}
|
|
|
|
#undef _rl_to_upper
|
|
int
|
|
_rl_to_upper (c)
|
|
int c;
|
|
{
|
|
return (islower (c) ? toupper (c) : c);
|
|
}
|
|
|
|
#undef _rl_digit_value
|
|
int
|
|
_rl_digit_value (c)
|
|
int c;
|
|
{
|
|
return (isdigit (c) ? c - '0' : c);
|
|
}
|