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Diffstat (limited to 'subst.h~')
| -rw-r--r-- | subst.h~ | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/subst.h~ b/subst.h~ new file mode 100644 index 00000000..a2aff011 --- /dev/null +++ b/subst.h~ @@ -0,0 +1,270 @@ +/* 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)); + +/* Expand an arithmetic expression string */ +extern char *expand_arith_string __P((char *, int)); + +/* De-quote quoted characters in STRING. */ +extern char *dequote_string __P((char *)); + +/* De-quote quoted characters in each word in LIST. */ +extern WORD_LIST *dequote_list __P((WORD_LIST *)); + +/* 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 *)); + +/* And remove such quoted special characters. */ +extern char *remove_quoted_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 WORD_DESC *command_substitute __P((char *, int)); +extern char *pat_subst __P((char *, char *, char *, int)); + +extern int fifos_pending __P((void)); +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_ */ |