initial import from bash_3.1dfsg.orig.tar.gz

1 files changed, 260 insertions, 0 deletions

diff --git a/subst.h b/subst.h
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+/* subst.h -- Names of externally visible functions in subst.c. */
+
+/* Copyright (C) 1993-2004 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash 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.
+
+   Bash 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 Bash; see the file COPYING.  If not, write to the Free Software
+   Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+
+#if !defined (_SUBST_H_)
+#define _SUBST_H_
+
+#include "stdc.h"
+
+/* Constants which specify how to handle backslashes and quoting in
+   expand_word_internal ().  Q_DOUBLE_QUOTES means to use the function
+   slashify_in_quotes () to decide whether the backslash should be
+   retained.  Q_HERE_DOCUMENT means slashify_in_here_document () to
+   decide whether to retain the backslash.  Q_KEEP_BACKSLASH means
+   to unconditionally retain the backslash.  Q_PATQUOTE means that we're
+   expanding a pattern ${var%#[#%]pattern} in an expansion surrounded
+   by double quotes. */
+#define Q_DOUBLE_QUOTES  0x01
+#define Q_HERE_DOCUMENT  0x02
+#define Q_KEEP_BACKSLASH 0x04
+#define Q_PATQUOTE	 0x08
+#define Q_QUOTED	 0x10
+#define Q_ADDEDQUOTES	 0x20
+#define Q_QUOTEDNULL	 0x40
+
+/* Flag values controlling how assignment statements are treated. */
+#define ASS_APPEND	0x01
+#define ASS_MKLOCAL	0x02
+
+/* Remove backslashes which are quoting backquotes from STRING.  Modifies
+   STRING, and returns a pointer to it. */
+extern char * de_backslash __P((char *));
+
+/* Replace instances of \! in a string with !. */
+extern void unquote_bang __P((char *));
+
+/* Extract the $( construct in STRING, and return a new string.
+   Start extracting at (SINDEX) as if we had just seen "$(".
+   Make (SINDEX) get the position just after the matching ")". */
+extern char *extract_command_subst __P((char *, int *));
+
+/* Extract the $[ construct in STRING, and return a new string.
+   Start extracting at (SINDEX) as if we had just seen "$[".
+   Make (SINDEX) get the position just after the matching "]". */
+extern char *extract_arithmetic_subst __P((char *, int *));
+
+#if defined (PROCESS_SUBSTITUTION)
+/* Extract the <( or >( construct in STRING, and return a new string.
+   Start extracting at (SINDEX) as if we had just seen "<(".
+   Make (SINDEX) get the position just after the matching ")". */
+extern char *extract_process_subst __P((char *, char *, int *));
+#endif /* PROCESS_SUBSTITUTION */
+
+/* Extract the name of the variable to bind to from the assignment string. */
+extern char *assignment_name __P((char *));
+
+/* Return a single string of all the words present in LIST, separating
+   each word with SEP. */
+extern char *string_list_internal __P((WORD_LIST *, char *));
+
+/* Return a single string of all the words present in LIST, separating
+   each word with a space. */
+extern char *string_list __P((WORD_LIST *));
+
+/* Turn $* into a single string, obeying POSIX rules. */
+extern char *string_list_dollar_star __P((WORD_LIST *));
+
+/* Expand $@ into a single string, obeying POSIX rules. */
+extern char *string_list_dollar_at __P((WORD_LIST *, int));
+
+/* Perform quoted null character removal on each element of LIST.
+   This modifies LIST. */
+extern void word_list_remove_quoted_nulls __P((WORD_LIST *));
+
+/* This performs word splitting and quoted null character removal on
+   STRING. */
+extern WORD_LIST *list_string __P((char *, char *, int));
+
+extern char *get_word_from_string __P((char **, char *, char **));
+extern char *strip_trailing_ifs_whitespace __P((char *, char *, int));
+
+/* Given STRING, an assignment string, get the value of the right side
+   of the `=', and bind it to the left side.  If EXPAND is true, then
+   perform tilde expansion, parameter expansion, command substitution,
+   and arithmetic expansion on the right-hand side.  Do not perform word
+   splitting on the result of expansion. */
+extern int do_assignment __P((char *));
+extern int do_assignment_no_expand __P((char *));
+extern int do_word_assignment __P((WORD_DESC *));
+
+/* Append SOURCE to TARGET at INDEX.  SIZE is the current amount
+   of space allocated to TARGET.  SOURCE can be NULL, in which
+   case nothing happens.  Gets rid of SOURCE by free ()ing it.
+   Returns TARGET in case the location has changed. */
+extern char *sub_append_string __P((char *, char *, int *, int *));
+
+/* Append the textual representation of NUMBER to TARGET.
+   INDEX and SIZE are as in SUB_APPEND_STRING. */
+extern char *sub_append_number __P((intmax_t, char *, int *, int *));
+
+/* Return the word list that corresponds to `$*'. */
+extern WORD_LIST *list_rest_of_args __P((void));
+
+/* Make a single large string out of the dollar digit variables,
+   and the rest_of_args.  If DOLLAR_STAR is 1, then obey the special
+   case of "$*" with respect to IFS. */
+extern char *string_rest_of_args __P((int));
+
+extern int number_of_args __P((void));
+
+/* Expand STRING by performing parameter expansion, command substitution,
+   and arithmetic expansion.  Dequote the resulting WORD_LIST before
+   returning it, but do not perform word splitting.  The call to
+   remove_quoted_nulls () is made here because word splitting normally
+   takes care of quote removal. */
+extern WORD_LIST *expand_string_unsplit __P((char *, int));
+
+/* Expand the rhs of an assignment statement. */
+extern WORD_LIST *expand_string_assignment __P((char *, int));
+
+/* Expand a prompt string. */
+extern WORD_LIST *expand_prompt_string __P((char *, int));
+
+/* Expand STRING just as if you were expanding a word.  This also returns
+   a list of words.  Note that filename globbing is *NOT* done for word
+   or string expansion, just when the shell is expanding a command.  This
+   does parameter expansion, command substitution, arithmetic expansion,
+   and word splitting.  Dequote the resultant WORD_LIST before returning. */
+extern WORD_LIST *expand_string __P((char *, int));
+
+/* Convenience functions that expand strings to strings, taking care of
+   converting the WORD_LIST * returned by the expand_string* functions
+   to a string and deallocating the WORD_LIST *. */
+extern char *expand_string_to_string __P((char *, int));
+extern char *expand_string_unsplit_to_string __P((char *, int));
+extern char *expand_assignment_string_to_string __P((char *, int));
+
+/* De-quoted quoted characters in STRING. */
+extern char *dequote_string __P((char *));
+
+/* Expand WORD, performing word splitting on the result.  This does
+   parameter expansion, command substitution, arithmetic expansion,
+   word splitting, and quote removal. */
+extern WORD_LIST *expand_word __P((WORD_DESC *, int));
+
+/* Expand WORD, but do not perform word splitting on the result.  This
+   does parameter expansion, command substitution, arithmetic expansion,
+   and quote removal. */
+extern WORD_LIST *expand_word_unsplit __P((WORD_DESC *, int));
+extern WORD_LIST *expand_word_leave_quoted __P((WORD_DESC *, int));
+
+/* Return the value of a positional parameter.  This handles values > 10. */
+extern char *get_dollar_var_value __P((intmax_t));
+
+/* Quote a string to protect it from word splitting. */
+extern char *quote_string __P((char *));
+
+/* Quote escape characters (characters special to interals of expansion)
+   in a string. */
+extern char *quote_escapes __P((char *));
+
+/* Perform quote removal on STRING.  If QUOTED > 0, assume we are obeying the
+   backslash quoting rules for within double quotes. */
+extern char *string_quote_removal __P((char *, int));
+
+/* Perform quote removal on word WORD.  This allocates and returns a new
+   WORD_DESC *. */
+extern WORD_DESC *word_quote_removal __P((WORD_DESC *, int));
+
+/* Perform quote removal on all words in LIST.  If QUOTED is non-zero,
+   the members of the list are treated as if they are surrounded by
+   double quotes.  Return a new list, or NULL if LIST is NULL. */
+extern WORD_LIST *word_list_quote_removal __P((WORD_LIST *, int));
+
+/* Called when IFS is changed to maintain some private variables. */
+extern void setifs __P((SHELL_VAR *));
+
+/* Return the value of $IFS, or " \t\n" if IFS is unset. */
+extern char *getifs __P((void));
+
+/* This splits a single word into a WORD LIST on $IFS, but only if the word
+   is not quoted.  list_string () performs quote removal for us, even if we
+   don't do any splitting. */
+extern WORD_LIST *word_split __P((WORD_DESC *, char *));
+
+/* Take the list of words in LIST and do the various substitutions.  Return
+   a new list of words which is the expanded list, and without things like
+   variable assignments. */
+extern WORD_LIST *expand_words __P((WORD_LIST *));
+
+/* Same as expand_words (), but doesn't hack variable or environment
+   variables. */
+extern WORD_LIST *expand_words_no_vars __P((WORD_LIST *));
+
+/* Perform the `normal shell expansions' on a WORD_LIST.  These are
+   brace expansion, tilde expansion, parameter and variable substitution,
+   command substitution, arithmetic expansion, and word splitting. */
+extern WORD_LIST *expand_words_shellexp __P((WORD_LIST *));
+
+extern char *command_substitute __P((char *, int));
+extern char *pat_subst __P((char *, char *, char *, int));
+
+extern void unlink_fifo_list __P((void));
+
+extern WORD_LIST *list_string_with_quotes __P((char *));
+
+#if defined (ARRAY_VARS)
+extern char *extract_array_assignment_list __P((char *, int *));
+#endif
+
+#if defined (COND_COMMAND)
+extern char *remove_backslashes __P((char *));
+extern char *cond_expand_word __P((WORD_DESC *, int));
+#endif
+
+#if defined (READLINE)
+extern int char_is_quoted __P((char *, int));
+extern int unclosed_pair __P((char *, int, char *));
+extern int skip_to_delim __P((char *, int, char *));
+extern WORD_LIST *split_at_delims __P((char *, int, char *, int, int *, int *));
+#endif
+
+/* Variables used to keep track of the characters in IFS. */
+extern SHELL_VAR *ifs_var;
+extern char *ifs_value;
+extern unsigned char ifs_cmap[];
+
+#if defined (HANDLE_MULTIBYTE)
+extern unsigned char ifs_firstc[];
+extern size_t ifs_firstc_len;
+#else
+extern unsigned char ifs_firstc;
+#endif
+
+/* Evaluates to 1 if C is a character in $IFS. */
+#define isifs(c)	(ifs_cmap[(unsigned char)(c)] != 0)
+
+/* How to determine the quoted state of the character C. */
+#define QUOTED_CHAR(c)  ((c) == CTLESC)
+
+/* Is the first character of STRING a quoted NULL character? */
+#define QUOTED_NULL(string) ((string)[0] == CTLNUL && (string)[1] == '\0')
+
+#endif /* !_SUBST_H_ */