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-rw-r--r--lib/readline/histexpand.c100
1 files changed, 64 insertions, 36 deletions
diff --git a/lib/readline/histexpand.c b/lib/readline/histexpand.c
index f46c0b2..42498d2 100644
--- a/lib/readline/histexpand.c
+++ b/lib/readline/histexpand.c
@@ -1,24 +1,23 @@
/* histexpand.c -- history expansion. */
-/* Copyright (C) 1989-2004 Free Software Foundation, Inc.
+/* Copyright (C) 1989-2009 Free Software Foundation, Inc.
- This file contains the GNU History Library (the Library), a set of
+ This file contains the GNU History Library (History), a set of
routines for managing the text of previously typed lines.
- The Library is free software; you can redistribute it and/or modify
+ History 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 2, or (at your option)
- any later version.
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- The 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.
+ History 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,
- 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+ You should have received a copy of the GNU General Public License
+ along with History. If not, see <http://www.gnu.org/licenses/>.
+*/
#define READLINE_LIBRARY
@@ -64,9 +63,11 @@ static int subst_lhs_len;
static int subst_rhs_len;
static char *get_history_word_specifier PARAMS((char *, char *, int *));
-static char *history_find_word PARAMS((char *, int));
static int history_tokenize_word PARAMS((const char *, int));
+static char **history_tokenize_internal PARAMS((const char *, int, int *));
static char *history_substring PARAMS((const char *, int, int));
+static void freewords PARAMS((char **, int));
+static char *history_find_word PARAMS((char *, int));
static char *quote_breaks PARAMS((char *));
@@ -304,16 +305,20 @@ get_history_event (string, caller_index, delimiting_quote)
/* Extract the contents of STRING as if it is enclosed in single quotes.
SINDEX, when passed in, is the offset of the character immediately
following the opening single quote; on exit, SINDEX is left pointing
- to the closing single quote. */
+ to the closing single quote. FLAGS currently used to allow backslash
+ to escape a single quote (e.g., for bash $'...'). */
static void
-hist_string_extract_single_quoted (string, sindex)
+hist_string_extract_single_quoted (string, sindex, flags)
char *string;
- int *sindex;
+ int *sindex, flags;
{
register int i;
for (i = *sindex; string[i] && string[i] != '\''; i++)
- ;
+ {
+ if ((flags & 1) && string[i] == '\\' && string[i+1])
+ i++;
+ }
*sindex = i;
}
@@ -923,7 +928,7 @@ history_expand (hstring, output)
char **output;
{
register int j;
- int i, r, l, passc, cc, modified, eindex, only_printing, dquote;
+ int i, r, l, passc, cc, modified, eindex, only_printing, dquote, flag;
char *string;
/* The output string, and its length. */
@@ -1015,7 +1020,7 @@ history_expand (hstring, output)
}
else if (string[i] == history_expansion_char)
{
- if (!cc || member (cc, history_no_expand_chars))
+ if (cc == 0 || member (cc, history_no_expand_chars))
continue;
/* If the calling application has set
history_inhibit_expansion_function to a function that checks
@@ -1043,8 +1048,9 @@ history_expand (hstring, output)
else if (dquote == 0 && history_quotes_inhibit_expansion && string[i] == '\'')
{
/* If this is bash, single quotes inhibit history expansion. */
+ flag = (i > 0 && string[i - 1] == '$');
i++;
- hist_string_extract_single_quoted (string, &i);
+ hist_string_extract_single_quoted (string, &i, flag);
}
else if (history_quotes_inhibit_expansion && string[i] == '\\')
{
@@ -1095,7 +1101,7 @@ history_expand (hstring, output)
if (strlen (mb) > 1)
{
ADD_STRING (mb);
- break;
+ continue;
}
}
#endif /* HANDLE_MULTIBYTE */
@@ -1129,8 +1135,9 @@ history_expand (hstring, output)
{
int quote, slen;
+ flag = (i > 0 && string[i - 1] == '$');
quote = i++;
- hist_string_extract_single_quoted (string, &i);
+ hist_string_extract_single_quoted (string, &i, flag);
slen = i - quote + 2;
temp = (char *)xmalloc (slen);
@@ -1163,7 +1170,8 @@ history_expand (hstring, output)
/* If the history_expansion_char is followed by one of the
characters in history_no_expand_chars, then it is not a
candidate for expansion of any kind. */
- if (member (cc, history_no_expand_chars))
+ if (cc == 0 || member (cc, history_no_expand_chars) ||
+ (history_inhibit_expansion_function && (*history_inhibit_expansion_function) (string, i)))
{
ADD_CHAR (string[i]);
break;
@@ -1433,17 +1441,21 @@ history_tokenize_word (string, ind)
i += 2;
return i;
}
- else
+ else if ((peek == '&' && (string[i] == '>' || string[i] == '<')) ||
+ (peek == '>' && string[i] == '&') ||
+ (peek == '(' && (string[i] == '>' || string[i] == '<')) || /* ) */
+ (peek == '(' && string[i] == '$')) /* ) */
{
- if ((peek == '&' && (string[i] == '>' || string[i] == '<')) ||
- (peek == '>' && string[i] == '&') ||
- (peek == '(' && (string[i] == '>' || string[i] == '<')) || /* ) */
- (peek == '(' && string[i] == '$')) /* ) */
- {
- i += 2;
- return i;
- }
+ i += 2;
+ return i;
}
+#if 0
+ else if (peek == '\'' && string[i] == '$')
+ {
+ i += 2; /* XXX */
+ return i;
+ }
+#endif
if (string[i] != '$')
{
@@ -1569,6 +1581,18 @@ history_tokenize (string)
return (history_tokenize_internal (string, -1, (int *)NULL));
}
+/* Free members of WORDS from START to an empty string */
+static void
+freewords (words, start)
+ char **words;
+ int start;
+{
+ register int i;
+
+ for (i = start; words[i]; i++)
+ free (words[i]);
+}
+
/* Find and return the word which contains the character at index IND
in the history line LINE. Used to save the word matched by the
last history !?string? search. */
@@ -1582,12 +1606,16 @@ history_find_word (line, ind)
words = history_tokenize_internal (line, ind, &wind);
if (wind == -1 || words == 0)
- return ((char *)NULL);
+ {
+ if (words)
+ freewords (words, 0);
+ FREE (words);
+ return ((char *)NULL);
+ }
s = words[wind];
for (i = 0; i < wind; i++)
free (words[i]);
- for (i = wind + 1; words[i]; i++)
- free (words[i]);
+ freewords (words, wind + 1);
free (words);
return s;
}
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