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-rw-r--r--lib/readline/util.c511
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diff --git a/lib/readline/util.c b/lib/readline/util.c
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+/* util.c -- readline utility functions */
+
+/* Copyright (C) 1987-2009 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library (Readline), a library
+ for reading lines of text with interactive input and history editing.
+
+ Readline 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 3 of the License, or
+ (at your option) any later version.
+
+ Readline 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.
+
+ You should have received a copy of the GNU General Public License
+ along with Readline. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <fcntl.h>
+#include "posixjmp.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 */
+
+#include <stdio.h>
+#include <ctype.h>
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+#include "rlmbutil.h"
+
+#if defined (TIOCSTAT_IN_SYS_IOCTL)
+# include <sys/ioctl.h>
+#endif /* TIOCSTAT_IN_SYS_IOCTL */
+
+/* Some standard library routines. */
+#include "readline.h"
+
+#include "rlprivate.h"
+#include "xmalloc.h"
+
+/* **************************************************************** */
+/* */
+/* 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 const char * const pathname_alphabetic_chars = "/-_=~.#$";
+
+int
+rl_alphabetic (c)
+ int c;
+{
+ if (ALPHABETIC (c))
+ return (1);
+
+ return (_rl_allow_pathname_alphabetic_chars &&
+ strchr (pathname_alphabetic_chars, c) != NULL);
+}
+
+#if defined (HANDLE_MULTIBYTE)
+int
+_rl_walphabetic (wchar_t wc)
+{
+ int c;
+
+ if (iswalnum (wc))
+ return (1);
+
+ c = wc & 0177;
+ return (_rl_allow_pathname_alphabetic_chars &&
+ strchr (pathname_alphabetic_chars, c) != NULL);
+}
+#endif
+
+/* How to abort things. */
+int
+_rl_abort_internal ()
+{
+ rl_ding ();
+ rl_clear_message ();
+ _rl_reset_argument ();
+ rl_clear_pending_input ();
+
+ RL_UNSETSTATE (RL_STATE_MACRODEF);
+ while (rl_executing_macro)
+ _rl_pop_executing_macro ();
+
+ rl_last_func = (rl_command_func_t *)NULL;
+ longjmp (_rl_top_level, 1);
+ return (0);
+}
+
+int
+rl_abort (count, key)
+ int count, key;
+{
+ return (_rl_abort_internal ());
+}
+
+int
+_rl_null_function (count, key)
+ int count, key;
+{
+ return 0;
+}
+
+int
+rl_tty_status (count, key)
+ int count, key;
+{
+#if defined (TIOCSTAT)
+ ioctl (1, TIOCSTAT, (char *)0);
+ rl_refresh_line (count, key);
+#else
+ rl_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 = (char *)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 = (char *)xrealloc (rl_line_buffer, rl_line_buffer_len);
+ }
+
+ _rl_set_the_line ();
+}
+
+
+/* A function for simple tilde expansion. */
+int
+rl_tilde_expand (ignore, key)
+ int ignore, key;
+{
+ register int start, end;
+ char *homedir, *temp;
+ int len;
+
+ end = rl_point;
+ start = end - 1;
+
+ if (rl_point == rl_end && rl_line_buffer[rl_point] == '~')
+ {
+ homedir = tilde_expand ("~");
+ _rl_replace_text (homedir, start, end);
+ xfree (homedir);
+ return (0);
+ }
+ else if (rl_line_buffer[start] != '~')
+ {
+ for (; !whitespace (rl_line_buffer[start]) && start >= 0; start--)
+ ;
+ start++;
+ }
+
+ end = start;
+ do
+ end++;
+ while (whitespace (rl_line_buffer[end]) == 0 && end < rl_end);
+
+ if (whitespace (rl_line_buffer[end]) || end >= rl_end)
+ end--;
+
+ /* If the first character of the current word is a tilde, perform
+ tilde expansion and insert the result. If not a tilde, do
+ nothing. */
+ if (rl_line_buffer[start] == '~')
+ {
+ len = end - start + 1;
+ temp = (char *)xmalloc (len + 1);
+ strncpy (temp, rl_line_buffer + start, len);
+ temp[len] = '\0';
+ homedir = tilde_expand (temp);
+ xfree (temp);
+
+ _rl_replace_text (homedir, start, end);
+ xfree (homedir);
+ }
+
+ return (0);
+}
+
+#if defined (USE_VARARGS)
+void
+#if defined (PREFER_STDARG)
+_rl_ttymsg (const char *format, ...)
+#else
+_rl_ttymsg (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+#if defined (PREFER_VARARGS)
+ char *format;
+#endif
+
+#if defined (PREFER_STDARG)
+ va_start (args, format);
+#else
+ va_start (args);
+ format = va_arg (args, char *);
+#endif
+
+ fprintf (stderr, "readline: ");
+ vfprintf (stderr, format, args);
+ fprintf (stderr, "\n");
+ fflush (stderr);
+
+ va_end (args);
+
+ rl_forced_update_display ();
+}
+
+void
+#if defined (PREFER_STDARG)
+_rl_errmsg (const char *format, ...)
+#else
+_rl_errmsg (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+#if defined (PREFER_VARARGS)
+ char *format;
+#endif
+
+#if defined (PREFER_STDARG)
+ va_start (args, format);
+#else
+ va_start (args);
+ format = va_arg (args, char *);
+#endif
+
+ fprintf (stderr, "readline: ");
+ vfprintf (stderr, format, args);
+ fprintf (stderr, "\n");
+ fflush (stderr);
+
+ va_end (args);
+}
+
+#else /* !USE_VARARGS */
+void
+_rl_ttymsg (format, arg1, arg2)
+ char *format;
+{
+ fprintf (stderr, "readline: ");
+ fprintf (stderr, format, arg1, arg2);
+ fprintf (stderr, "\n");
+
+ rl_forced_update_display ();
+}
+
+void
+_rl_errmsg (format, arg1, arg2)
+ char *format;
+{
+ fprintf (stderr, "readline: ");
+ fprintf (stderr, format, arg1, arg2);
+ fprintf (stderr, "\n");
+}
+#endif /* !USE_VARARGS */
+
+/* **************************************************************** */
+/* */
+/* 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 const 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 ((char *) (s1 + i));
+ return ((char *)NULL);
+}
+
+#ifndef HAVE_STRPBRK
+/* Find the first occurrence in STRING1 of any character from STRING2.
+ Return a pointer to the character in STRING1. */
+char *
+_rl_strpbrk (string1, string2)
+ const char *string1, *string2;
+{
+ register const char *scan;
+#if defined (HANDLE_MULTIBYTE)
+ mbstate_t ps;
+ register int i, v;
+
+ memset (&ps, 0, sizeof (mbstate_t));
+#endif
+
+ for (; *string1; string1++)
+ {
+ for (scan = string2; *scan; scan++)
+ {
+ if (*string1 == *scan)
+ return ((char *)string1);
+ }
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ v = _rl_get_char_len (string1, &ps);
+ if (v > 1)
+ string1 += v - 1; /* -1 to account for auto-increment in loop */
+ }
+#endif
+ }
+ return ((char *)NULL);
+}
+#endif
+
+#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
+}
+
+/* Function equivalents for the macros defined in chardefs.h. */
+#define FUNCTION_FOR_MACRO(f) int (f) (c) int c; { return f (c); }
+
+FUNCTION_FOR_MACRO (_rl_digit_p)
+FUNCTION_FOR_MACRO (_rl_digit_value)
+FUNCTION_FOR_MACRO (_rl_lowercase_p)
+FUNCTION_FOR_MACRO (_rl_pure_alphabetic)
+FUNCTION_FOR_MACRO (_rl_to_lower)
+FUNCTION_FOR_MACRO (_rl_to_upper)
+FUNCTION_FOR_MACRO (_rl_uppercase_p)
+
+/* A convenience function, to force memory deallocation to be performed
+ by readline. DLLs on Windows apparently require this. */
+void
+rl_free (mem)
+ void *mem;
+{
+ if (mem)
+ free (mem);
+}
+
+/* Backwards compatibility, now that savestring has been removed from
+ all `public' readline header files. */
+#undef _rl_savestring
+char *
+_rl_savestring (s)
+ const char *s;
+{
+ return (strcpy ((char *)xmalloc (1 + (int)strlen (s)), (s)));
+}
+
+#if defined (USE_VARARGS)
+static FILE *_rl_tracefp;
+
+void
+#if defined (PREFER_STDARG)
+_rl_trace (const char *format, ...)
+#else
+_rl_trace (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+#if defined (PREFER_VARARGS)
+ char *format;
+#endif
+
+#if defined (PREFER_STDARG)
+ va_start (args, format);
+#else
+ va_start (args);
+ format = va_arg (args, char *);
+#endif
+
+ if (_rl_tracefp == 0)
+ _rl_tropen ();
+ vfprintf (_rl_tracefp, format, args);
+ fprintf (_rl_tracefp, "\n");
+ fflush (_rl_tracefp);
+
+ va_end (args);
+}
+
+int
+_rl_tropen ()
+{
+ char fnbuf[128];
+
+ if (_rl_tracefp)
+ fclose (_rl_tracefp);
+ sprintf (fnbuf, "/var/tmp/rltrace.%ld", getpid());
+ unlink(fnbuf);
+ _rl_tracefp = fopen (fnbuf, "w+");
+ return _rl_tracefp != 0;
+}
+
+int
+_rl_trclose ()
+{
+ int r;
+
+ r = fclose (_rl_tracefp);
+ _rl_tracefp = 0;
+ return r;
+}
+
+#endif
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