diff options
Diffstat (limited to 'builtins/shopt.def~')
| -rw-r--r-- | builtins/shopt.def~ | 687 |
1 files changed, 687 insertions, 0 deletions
diff --git a/builtins/shopt.def~ b/builtins/shopt.def~ new file mode 100644 index 00000000..0bdb8898 --- /dev/null +++ b/builtins/shopt.def~ @@ -0,0 +1,687 @@ +This file is shopt.def, from which is created shopt.c. +It implements the Bash `shopt' builtin. + +Copyright (C) 1994-2009 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 all shell options 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 (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; + +#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; + +extern int enable_hostname_completion __P((int)); +#endif + +#if defined (PROGRAMMABLE_COMPLETION) +extern int prog_completion_enabled; +#endif + +#if defined (RESTRICTED_SHELL) +extern char *shell_name; +#endif + +#if defined (DEBUGGER) +extern int debugging_mode; +#endif + +static void shopt_error __P((char *)); + +static int set_shellopts_after_change __P((int)); + +static int set_compatibility_level __P((int)); + +#if defined (RESTRICTED_SHELL) +static int set_restricted_shell __P((int)); +#endif + +static int shopt_login_shell; +static int shopt_compat31; +static int shopt_compat32; +static int shopt_compat40; + +typedef int shopt_set_func_t __P((int)); + +static struct { + char *name; + int *value; + shopt_set_func_t *set_func; +} shopt_vars[] = { + { "autocd", &autocd, (shopt_set_func_t *)NULL }, + { "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 }, +#if defined (READLINE) + { "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_func_t *)NULL }, +#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 + { "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, enable_hostname_completion }, +#endif + { "huponexit", &hup_on_exit, (shopt_set_func_t *)NULL }, + { "interactive_comments", &interactive_comments, set_shellopts_after_change }, +#if defined (HISTORY) + { "lithist", &literal_history, (shopt_set_func_t *)NULL }, +#endif + { "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 }, +#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 }, + { "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 __P((char *)); +static int toggle_shopts __P((int, WORD_LIST *, int)); +static void print_shopt __P((char *, int, int)); +static int list_shopts __P((WORD_LIST *, int)); +static int list_some_shopts __P((int, int)); +static int list_shopt_o_options __P((WORD_LIST *, int)); +static int list_some_o_options __P((int, int)); +static int set_shopt_o_options __P((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; + 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. */ +void +reset_shopt_options () +{ + allow_null_glob_expansion = glob_dot_filenames = 0; + cdable_vars = mail_warning = 0; + no_exit_on_failed_exec = print_shift_error = 0; + check_hashed_filenames = cdspelling = expand_aliases = check_window_size = 0; + + source_uses_path = promptvars = 1; + +#if defined (EXTENDED_GLOB) + extended_glob = 0; +#endif + +#if defined (HISTORY) + literal_history = force_append_history = 0; + command_oriented_history = 1; +#endif + +#if defined (READLINE) + hist_verify = history_reediting = 0; + perform_hostname_completion = 1; +#endif + + 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; + + 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) (mode); + } + } + 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 (mode) + int mode; +{ + set_shellopts (); + return (0); +} + +static int +set_compatibility_level (mode) + int mode; +{ + /* Need to change logic here as we add more compatibility levels */ + if (shopt_compat31) + shell_compatibility_level = 31; + else if (shopt_compat32) + shell_compatibility_level = 32; + else + shell_compatibility_level = DEFAULT_COMPAT_LEVEL; + return 0; +} + +#if defined (RESTRICTED_SHELL) +/* Don't allow the value of restricted_shell to be modified. */ + +static int +set_restricted_shell (mode) + 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 (mode) + 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; + 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 (); +} |