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Diffstat (limited to 'builtins/shopt.def')
| -rw-r--r-- | builtins/shopt.def | 899 |
1 files changed, 899 insertions, 0 deletions
diff --git a/builtins/shopt.def b/builtins/shopt.def new file mode 100644 index 0000000..6dca224 --- /dev/null +++ b/builtins/shopt.def @@ -0,0 +1,899 @@ +This file is shopt.def, from which is created shopt.c. +It implements the Bash `shopt' builtin. + +Copyright (C) 1994-2020 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>. + +$PRODUCES shopt.c + +$BUILTIN shopt +$FUNCTION shopt_builtin +$SHORT_DOC shopt [-pqsu] [-o] [optname ...] +Set and unset shell options. + +Change the setting of each shell option OPTNAME. Without any option +arguments, list each supplied OPTNAME, or all shell options if no +OPTNAMEs are given, with an indication of whether or not each is set. + +Options: + -o restrict OPTNAMEs to those defined for use with `set -o' + -p print each shell option with an indication of its status + -q suppress output + -s enable (set) each OPTNAME + -u disable (unset) each OPTNAME + +Exit Status: +Returns success if OPTNAME is enabled; fails if an invalid option is +given or OPTNAME is disabled. +$END + +#include <config.h> + +#if defined (HAVE_UNISTD_H) +# ifdef _MINIX +# include <sys/types.h> +# endif +# include <unistd.h> +#endif + +#include <stdio.h> + +#include "version.h" + +#include "../bashintl.h" + +#include "../shell.h" +#include "../flags.h" +#include "common.h" +#include "bashgetopt.h" + +#if defined (READLINE) +# include "../bashline.h" +#endif + +#if defined (HISTORY) +# include "../bashhist.h" +#endif + +#define UNSETOPT 0 +#define SETOPT 1 + +#define OPTFMT "%-15s\t%s\n" + +extern int allow_null_glob_expansion, fail_glob_expansion, glob_dot_filenames; +extern int cdable_vars, mail_warning, source_uses_path; +extern int no_exit_on_failed_exec, print_shift_error; +extern int check_hashed_filenames, promptvars; +extern int cdspelling, expand_aliases; +extern int extended_quote; +extern int check_window_size; +extern int glob_ignore_case, match_ignore_case; +extern int hup_on_exit; +extern int xpg_echo; +extern int gnu_error_format; +extern int check_jobs_at_exit; +extern int autocd; +extern int glob_star; +extern int glob_asciirange; +extern int lastpipe_opt; +extern int inherit_errexit; +extern int localvar_inherit; +extern int localvar_unset; + +#if defined (EXTENDED_GLOB) +extern int extended_glob; +#endif + +#if defined (READLINE) +extern int hist_verify, history_reediting, perform_hostname_completion; +extern int no_empty_command_completion; +extern int force_fignore; +extern int dircomplete_spelling, dircomplete_expand; +extern int complete_fullquote; + +extern int enable_hostname_completion PARAMS((int)); +#endif + +#if defined (PROGRAMMABLE_COMPLETION) +extern int prog_completion_enabled; +extern int progcomp_alias; +#endif + +#if defined (DEBUGGER) +extern int debugging_mode; +#endif + +#if defined (ARRAY_VARS) +extern int assoc_expand_once; +extern int array_expand_once; +#endif + +#if defined (SYSLOG_HISTORY) +extern int syslog_history; +#endif + +static void shopt_error PARAMS((char *)); + +static int set_shellopts_after_change PARAMS((char *, int)); +static int set_compatibility_level PARAMS((char *, int)); + +#if defined (RESTRICTED_SHELL) +static int set_restricted_shell PARAMS((char *, int)); +#endif + +#if defined (READLINE) +static int shopt_enable_hostname_completion PARAMS((char *, int)); +static int shopt_set_complete_direxpand PARAMS((char *, int)); +#endif + +static int shopt_set_debug_mode PARAMS((char *, int)); + +static int shopt_login_shell; +static int shopt_compat31; +static int shopt_compat32; +static int shopt_compat40; +static int shopt_compat41; +static int shopt_compat42; +static int shopt_compat43; +static int shopt_compat44; + +typedef int shopt_set_func_t PARAMS((char *, int)); + +/* If you add a new variable name here, make sure to set the default value + appropriately in reset_shopt_options. */ + +static struct { + char *name; + int *value; + shopt_set_func_t *set_func; +} shopt_vars[] = { + { "autocd", &autocd, (shopt_set_func_t *)NULL }, +#if defined (ARRAY_VARS) + { "assoc_expand_once", &assoc_expand_once, (shopt_set_func_t *)NULL }, +#endif + { "cdable_vars", &cdable_vars, (shopt_set_func_t *)NULL }, + { "cdspell", &cdspelling, (shopt_set_func_t *)NULL }, + { "checkhash", &check_hashed_filenames, (shopt_set_func_t *)NULL }, +#if defined (JOB_CONTROL) + { "checkjobs", &check_jobs_at_exit, (shopt_set_func_t *)NULL }, +#endif + { "checkwinsize", &check_window_size, (shopt_set_func_t *)NULL }, +#if defined (HISTORY) + { "cmdhist", &command_oriented_history, (shopt_set_func_t *)NULL }, +#endif + { "compat31", &shopt_compat31, set_compatibility_level }, + { "compat32", &shopt_compat32, set_compatibility_level }, + { "compat40", &shopt_compat40, set_compatibility_level }, + { "compat41", &shopt_compat41, set_compatibility_level }, + { "compat42", &shopt_compat42, set_compatibility_level }, + { "compat43", &shopt_compat43, set_compatibility_level }, + { "compat44", &shopt_compat44, set_compatibility_level }, +#if defined (READLINE) + { "complete_fullquote", &complete_fullquote, (shopt_set_func_t *)NULL}, + { "direxpand", &dircomplete_expand, shopt_set_complete_direxpand }, + { "dirspell", &dircomplete_spelling, (shopt_set_func_t *)NULL }, +#endif + { "dotglob", &glob_dot_filenames, (shopt_set_func_t *)NULL }, + { "execfail", &no_exit_on_failed_exec, (shopt_set_func_t *)NULL }, + { "expand_aliases", &expand_aliases, (shopt_set_func_t *)NULL }, +#if defined (DEBUGGER) + { "extdebug", &debugging_mode, shopt_set_debug_mode }, +#endif +#if defined (EXTENDED_GLOB) + { "extglob", &extended_glob, (shopt_set_func_t *)NULL }, +#endif + { "extquote", &extended_quote, (shopt_set_func_t *)NULL }, + { "failglob", &fail_glob_expansion, (shopt_set_func_t *)NULL }, +#if defined (READLINE) + { "force_fignore", &force_fignore, (shopt_set_func_t *)NULL }, +#endif + { "globasciiranges", &glob_asciirange, (shopt_set_func_t *)NULL }, + { "globstar", &glob_star, (shopt_set_func_t *)NULL }, + { "gnu_errfmt", &gnu_error_format, (shopt_set_func_t *)NULL }, +#if defined (HISTORY) + { "histappend", &force_append_history, (shopt_set_func_t *)NULL }, +#endif +#if defined (READLINE) + { "histreedit", &history_reediting, (shopt_set_func_t *)NULL }, + { "histverify", &hist_verify, (shopt_set_func_t *)NULL }, + { "hostcomplete", &perform_hostname_completion, shopt_enable_hostname_completion }, +#endif + { "huponexit", &hup_on_exit, (shopt_set_func_t *)NULL }, + { "inherit_errexit", &inherit_errexit, (shopt_set_func_t *)NULL }, + { "interactive_comments", &interactive_comments, set_shellopts_after_change }, + { "lastpipe", &lastpipe_opt, (shopt_set_func_t *)NULL }, +#if defined (HISTORY) + { "lithist", &literal_history, (shopt_set_func_t *)NULL }, +#endif + { "localvar_inherit", &localvar_inherit, (shopt_set_func_t *)NULL }, + { "localvar_unset", &localvar_unset, (shopt_set_func_t *)NULL }, + { "login_shell", &shopt_login_shell, set_login_shell }, + { "mailwarn", &mail_warning, (shopt_set_func_t *)NULL }, +#if defined (READLINE) + { "no_empty_cmd_completion", &no_empty_command_completion, (shopt_set_func_t *)NULL }, +#endif + { "nocaseglob", &glob_ignore_case, (shopt_set_func_t *)NULL }, + { "nocasematch", &match_ignore_case, (shopt_set_func_t *)NULL }, + { "nullglob", &allow_null_glob_expansion, (shopt_set_func_t *)NULL }, +#if defined (PROGRAMMABLE_COMPLETION) + { "progcomp", &prog_completion_enabled, (shopt_set_func_t *)NULL }, +# if defined (ALIAS) + { "progcomp_alias", &progcomp_alias, (shopt_set_func_t *)NULL }, +# endif +#endif + { "promptvars", &promptvars, (shopt_set_func_t *)NULL }, +#if defined (RESTRICTED_SHELL) + { "restricted_shell", &restricted_shell, set_restricted_shell }, +#endif + { "shift_verbose", &print_shift_error, (shopt_set_func_t *)NULL }, + { "sourcepath", &source_uses_path, (shopt_set_func_t *)NULL }, +#if defined (SYSLOG_HISTORY) && defined (SYSLOG_SHOPT) + { "syslog_history", &syslog_history, (shopt_set_func_t *)NULL }, +#endif + { "xpg_echo", &xpg_echo, (shopt_set_func_t *)NULL }, + { (char *)0, (int *)0, (shopt_set_func_t *)NULL } +}; + +#define N_SHOPT_OPTIONS (sizeof (shopt_vars) / sizeof (shopt_vars[0])) + +#define GET_SHOPT_OPTION_VALUE(i) (*shopt_vars[i].value) + +static const char * const on = "on"; +static const char * const off = "off"; + +static int find_shopt PARAMS((char *)); +static int toggle_shopts PARAMS((int, WORD_LIST *, int)); +static void print_shopt PARAMS((char *, int, int)); +static int list_shopts PARAMS((WORD_LIST *, int)); +static int list_some_shopts PARAMS((int, int)); +static int list_shopt_o_options PARAMS((WORD_LIST *, int)); +static int list_some_o_options PARAMS((int, int)); +static int set_shopt_o_options PARAMS((int, WORD_LIST *, int)); + +#define SFLAG 0x01 +#define UFLAG 0x02 +#define QFLAG 0x04 +#define OFLAG 0x08 +#define PFLAG 0x10 + +int +shopt_builtin (list) + WORD_LIST *list; +{ + int opt, flags, rval; + + flags = 0; + reset_internal_getopt (); + while ((opt = internal_getopt (list, "psuoq")) != -1) + { + switch (opt) + { + case 's': + flags |= SFLAG; + break; + case 'u': + flags |= UFLAG; + break; + case 'q': + flags |= QFLAG; + break; + case 'o': + flags |= OFLAG; + break; + case 'p': + flags |= PFLAG; + break; + CASE_HELPOPT; + default: + builtin_usage (); + return (EX_USAGE); + } + } + list = loptend; + + if ((flags & (SFLAG|UFLAG)) == (SFLAG|UFLAG)) + { + builtin_error (_("cannot set and unset shell options simultaneously")); + return (EXECUTION_FAILURE); + } + + rval = EXECUTION_SUCCESS; + if ((flags & OFLAG) && ((flags & (SFLAG|UFLAG)) == 0)) /* shopt -o */ + rval = list_shopt_o_options (list, flags); + else if (list && (flags & OFLAG)) /* shopt -so args */ + rval = set_shopt_o_options ((flags & SFLAG) ? FLAG_ON : FLAG_OFF, list, flags & QFLAG); + else if (flags & OFLAG) /* shopt -so */ + rval = list_some_o_options ((flags & SFLAG) ? 1 : 0, flags); + else if (list && (flags & (SFLAG|UFLAG))) /* shopt -su args */ + rval = toggle_shopts ((flags & SFLAG) ? SETOPT : UNSETOPT, list, flags & QFLAG); + else if ((flags & (SFLAG|UFLAG)) == 0) /* shopt [args] */ + rval = list_shopts (list, flags); + else /* shopt -su */ + rval = list_some_shopts ((flags & SFLAG) ? SETOPT : UNSETOPT, flags); + return (rval); +} + +/* Reset the options managed by `shopt' to the values they would have at + shell startup. Variables from shopt_vars. */ +void +reset_shopt_options () +{ + autocd = cdable_vars = cdspelling = 0; + check_hashed_filenames = CHECKHASH_DEFAULT; + check_window_size = CHECKWINSIZE_DEFAULT; + allow_null_glob_expansion = glob_dot_filenames = 0; + no_exit_on_failed_exec = 0; + expand_aliases = 0; + extended_quote = 1; + fail_glob_expansion = 0; + glob_asciirange = GLOBASCII_DEFAULT; + glob_star = 0; + gnu_error_format = 0; + hup_on_exit = 0; + inherit_errexit = 0; + interactive_comments = 1; + lastpipe_opt = 0; + localvar_inherit = localvar_unset = 0; + mail_warning = 0; + glob_ignore_case = match_ignore_case = 0; + print_shift_error = 0; + source_uses_path = promptvars = 1; + +#if defined (JOB_CONTROL) + check_jobs_at_exit = 0; +#endif + +#if defined (EXTENDED_GLOB) + extended_glob = EXTGLOB_DEFAULT; +#endif + +#if defined (ARRAY_VARS) + assoc_expand_once = 0; +#endif + +#if defined (HISTORY) + literal_history = 0; + force_append_history = 0; + command_oriented_history = 1; +#endif + +#if defined (SYSLOG_HISTORY) +# if defined (SYSLOG_SHOPT) + syslog_history = SYSLOG_SHOPT; +# else + syslog_history = 1; +# endif /* SYSLOG_SHOPT */ +#endif + +#if defined (READLINE) + complete_fullquote = 1; + force_fignore = 1; + hist_verify = history_reediting = 0; + perform_hostname_completion = 1; +# if DIRCOMPLETE_EXPAND_DEFAULT + dircomplete_expand = 1; +# else + dircomplete_expand = 0; +#endif + dircomplete_spelling = 0; + no_empty_command_completion = 0; +#endif + +#if defined (PROGRAMMABLE_COMPLETION) + prog_completion_enabled = 1; +# if defined (ALIAS) + progcomp_alias = 0; +# endif +#endif + +#if defined (DEFAULT_ECHO_TO_XPG) || defined (STRICT_POSIX) + xpg_echo = 1; +#else + xpg_echo = 0; +#endif /* DEFAULT_ECHO_TO_XPG */ + + shopt_login_shell = login_shell; +} + +static int +find_shopt (name) + char *name; +{ + int i; + + for (i = 0; shopt_vars[i].name; i++) + if (STREQ (name, shopt_vars[i].name)) + return i; + return -1; +} + +static void +shopt_error (s) + char *s; +{ + builtin_error (_("%s: invalid shell option name"), s); +} + +static int +toggle_shopts (mode, list, quiet) + int mode; + WORD_LIST *list; + int quiet; +{ + WORD_LIST *l; + int ind, rval; + SHELL_VAR *v; + + for (l = list, rval = EXECUTION_SUCCESS; l; l = l->next) + { + ind = find_shopt (l->word->word); + if (ind < 0) + { + shopt_error (l->word->word); + rval = EXECUTION_FAILURE; + } + else + { + *shopt_vars[ind].value = mode; /* 1 for set, 0 for unset */ + if (shopt_vars[ind].set_func) + (*shopt_vars[ind].set_func) (shopt_vars[ind].name, mode); + } + } + + /* Don't set $BASHOPTS here if it hasn't already been initialized */ + if (v = find_variable ("BASHOPTS")) + set_bashopts (); + return (rval); +} + +static void +print_shopt (name, val, flags) + char *name; + int val, flags; +{ + if (flags & PFLAG) + printf ("shopt %s %s\n", val ? "-s" : "-u", name); + else + printf (OPTFMT, name, val ? on : off); +} + +/* List the values of all or any of the `shopt' options. Returns 0 if + all were listed or all variables queried were on; 1 otherwise. */ +static int +list_shopts (list, flags) + WORD_LIST *list; + int flags; +{ + WORD_LIST *l; + int i, val, rval; + + if (list == 0) + { + for (i = 0; shopt_vars[i].name; i++) + { + val = *shopt_vars[i].value; + if ((flags & QFLAG) == 0) + print_shopt (shopt_vars[i].name, val, flags); + } + return (sh_chkwrite (EXECUTION_SUCCESS)); + } + + for (l = list, rval = EXECUTION_SUCCESS; l; l = l->next) + { + i = find_shopt (l->word->word); + if (i < 0) + { + shopt_error (l->word->word); + rval = EXECUTION_FAILURE; + continue; + } + val = *shopt_vars[i].value; + if (val == 0) + rval = EXECUTION_FAILURE; + if ((flags & QFLAG) == 0) + print_shopt (l->word->word, val, flags); + } + + return (sh_chkwrite (rval)); +} + +static int +list_some_shopts (mode, flags) + int mode, flags; +{ + int val, i; + + for (i = 0; shopt_vars[i].name; i++) + { + val = *shopt_vars[i].value; + if (((flags & QFLAG) == 0) && mode == val) + print_shopt (shopt_vars[i].name, val, flags); + } + return (sh_chkwrite (EXECUTION_SUCCESS)); +} + +static int +list_shopt_o_options (list, flags) + WORD_LIST *list; + int flags; +{ + WORD_LIST *l; + int val, rval; + + if (list == 0) + { + if ((flags & QFLAG) == 0) + list_minus_o_opts (-1, (flags & PFLAG)); + return (sh_chkwrite (EXECUTION_SUCCESS)); + } + + for (l = list, rval = EXECUTION_SUCCESS; l; l = l->next) + { + val = minus_o_option_value (l->word->word); + if (val == -1) + { + sh_invalidoptname (l->word->word); + rval = EXECUTION_FAILURE; + continue; + } + if (val == 0) + rval = EXECUTION_FAILURE; + if ((flags & QFLAG) == 0) + { + if (flags & PFLAG) + printf ("set %co %s\n", val ? '-' : '+', l->word->word); + else + printf (OPTFMT, l->word->word, val ? on : off); + } + } + return (sh_chkwrite (rval)); +} + +static int +list_some_o_options (mode, flags) + int mode, flags; +{ + if ((flags & QFLAG) == 0) + list_minus_o_opts (mode, (flags & PFLAG)); + return (sh_chkwrite (EXECUTION_SUCCESS)); +} + +static int +set_shopt_o_options (mode, list, quiet) + int mode; + WORD_LIST *list; + int quiet; +{ + WORD_LIST *l; + int rval; + + for (l = list, rval = EXECUTION_SUCCESS; l; l = l->next) + { + if (set_minus_o_option (mode, l->word->word) == EXECUTION_FAILURE) + rval = EXECUTION_FAILURE; + } + set_shellopts (); + return rval; +} + +/* If we set or unset interactive_comments with shopt, make sure the + change is reflected in $SHELLOPTS. */ +static int +set_shellopts_after_change (option_name, mode) + char *option_name; + int mode; +{ + set_shellopts (); + return (0); +} + +static int +shopt_set_debug_mode (option_name, mode) + char *option_name; + int mode; +{ +#if defined (DEBUGGER) + error_trace_mode = function_trace_mode = debugging_mode; + set_shellopts (); + if (debugging_mode) + init_bash_argv (); +#endif + return (0); +} + +#if defined (READLINE) +static int +shopt_enable_hostname_completion (option_name, mode) + char *option_name; + int mode; +{ + return (enable_hostname_completion (mode)); +} +#endif + +static int +set_compatibility_level (option_name, mode) + char *option_name; + int mode; +{ + int ind; + char *rhs; + + /* If we're setting something, redo some of the work we did above in + toggle_shopt(). Unset everything and reset the appropriate option + based on OPTION_NAME. */ + if (mode) + { + shopt_compat31 = shopt_compat32 = 0; + shopt_compat40 = shopt_compat41 = shopt_compat42 = shopt_compat43 = 0; + shopt_compat44 = 0; + ind = find_shopt (option_name); + *shopt_vars[ind].value = mode; + } + + /* Then set shell_compatibility_level based on what remains */ + if (shopt_compat31) + shell_compatibility_level = 31; + else if (shopt_compat32) + shell_compatibility_level = 32; + else if (shopt_compat40) + shell_compatibility_level = 40; + else if (shopt_compat41) + shell_compatibility_level = 41; + else if (shopt_compat42) + shell_compatibility_level = 42; + else if (shopt_compat43) + shell_compatibility_level = 43; + else if (shopt_compat44) + shell_compatibility_level = 44; + else + shell_compatibility_level = DEFAULT_COMPAT_LEVEL; + + /* Make sure the current compatibility level is reflected in BASH_COMPAT */ + rhs = itos (shell_compatibility_level); + bind_variable ("BASH_COMPAT", rhs, 0); + free (rhs); + + return 0; +} + +/* Set and unset the various compatibility options from the value of + shell_compatibility_level; used by sv_shcompat */ +void +set_compatibility_opts () +{ + shopt_compat31 = shopt_compat32 = 0; + shopt_compat40 = shopt_compat41 = shopt_compat42 = shopt_compat43 = 0; + shopt_compat44 = 0; + switch (shell_compatibility_level) + { + case DEFAULT_COMPAT_LEVEL: + break; + case 44: + shopt_compat44 = 1; break; + case 43: + shopt_compat43 = 1; break; + case 42: + shopt_compat42 = 1; break; + case 41: + shopt_compat41 = 1; break; + case 40: + shopt_compat40 = 1; break; + case 32: + shopt_compat32 = 1; break; + case 31: + shopt_compat31 = 1; break; + } +} + +#if defined (READLINE) +static int +shopt_set_complete_direxpand (option_name, mode) + char *option_name; + int mode; +{ + set_directory_hook (); + return 0; +} +#endif + +#if defined (RESTRICTED_SHELL) +/* Don't allow the value of restricted_shell to be modified. */ + +static int +set_restricted_shell (option_name, mode) + char *option_name; + int mode; +{ + static int save_restricted = -1; + + if (save_restricted == -1) + save_restricted = shell_is_restricted (shell_name); + + restricted_shell = save_restricted; + return (0); +} +#endif /* RESTRICTED_SHELL */ + +/* Not static so shell.c can call it to initialize shopt_login_shell */ +int +set_login_shell (option_name, mode) + char *option_name; + int mode; +{ + shopt_login_shell = login_shell != 0; + return (0); +} + +char ** +get_shopt_options () +{ + char **ret; + int n, i; + + n = sizeof (shopt_vars) / sizeof (shopt_vars[0]); + ret = strvec_create (n + 1); + for (i = 0; shopt_vars[i].name; i++) + ret[i] = savestring (shopt_vars[i].name); + ret[i] = (char *)NULL; + return ret; +} + +/* + * External interface for other parts of the shell. NAME is a string option; + * MODE is 0 if we want to unset an option; 1 if we want to set an option. + * REUSABLE is 1 if we want to print output in a form that may be reused. + */ +int +shopt_setopt (name, mode) + char *name; + int mode; +{ + WORD_LIST *wl; + int r; + + wl = add_string_to_list (name, (WORD_LIST *)NULL); + r = toggle_shopts (mode, wl, 0); + dispose_words (wl); + return r; +} + +int +shopt_listopt (name, reusable) + char *name; + int reusable; +{ + int i; + + if (name == 0) + return (list_shopts ((WORD_LIST *)NULL, reusable ? PFLAG : 0)); + + i = find_shopt (name); + if (i < 0) + { + shopt_error (name); + return (EXECUTION_FAILURE); + } + + print_shopt (name, *shopt_vars[i].value, reusable ? PFLAG : 0); + return (sh_chkwrite (EXECUTION_SUCCESS)); +} + +void +set_bashopts () +{ + char *value; + char tflag[N_SHOPT_OPTIONS]; + int vsize, i, vptr, *ip, exported; + SHELL_VAR *v; + + for (vsize = i = 0; shopt_vars[i].name; i++) + { + tflag[i] = 0; + if (GET_SHOPT_OPTION_VALUE (i)) + { + vsize += strlen (shopt_vars[i].name) + 1; + tflag[i] = 1; + } + } + + value = (char *)xmalloc (vsize + 1); + + for (i = vptr = 0; shopt_vars[i].name; i++) + { + if (tflag[i]) + { + strcpy (value + vptr, shopt_vars[i].name); + vptr += strlen (shopt_vars[i].name); + value[vptr++] = ':'; + } + } + + if (vptr) + vptr--; /* cut off trailing colon */ + value[vptr] = '\0'; + + v = find_variable ("BASHOPTS"); + + /* Turn off the read-only attribute so we can bind the new value, and + note whether or not the variable was exported. */ + if (v) + { + VUNSETATTR (v, att_readonly); + exported = exported_p (v); + } + else + exported = 0; + + v = bind_variable ("BASHOPTS", value, 0); + + /* Turn the read-only attribute back on, and turn off the export attribute + if it was set implicitly by mark_modified_vars and SHELLOPTS was not + exported before we bound the new value. */ + VSETATTR (v, att_readonly); + if (mark_modified_vars && exported == 0 && exported_p (v)) + VUNSETATTR (v, att_exported); + + free (value); +} + +void +parse_bashopts (value) + char *value; +{ + char *vname; + int vptr, ind; + + vptr = 0; + while (vname = extract_colon_unit (value, &vptr)) + { + ind = find_shopt (vname); + if (ind >= 0) + { + *shopt_vars[ind].value = 1; + if (shopt_vars[ind].set_func) + (*shopt_vars[ind].set_func) (shopt_vars[ind].name, 1); + } + free (vname); + } +} + +void +initialize_bashopts (no_bashopts) + int no_bashopts; +{ + char *temp; + SHELL_VAR *var; + + if (no_bashopts == 0) + { + var = find_variable ("BASHOPTS"); + /* set up any shell options we may have inherited. */ + if (var && imported_p (var)) + { + temp = (array_p (var) || assoc_p (var)) ? (char *)NULL : savestring (value_cell (var)); + if (temp) + { + parse_bashopts (temp); + free (temp); + } + } + } + + /* Set up the $BASHOPTS variable. */ + set_bashopts (); +} |