#include "defs.h"
#include "path.h"
#include "io.h"
#include "builtins.h"
#include "name.h"
#ifndef BASH_MAJOR
# define BASH_MAJOR "1"
# define BASH_MINOR "0"
# define BASH_PATCH "0"
# define BASH_BUILD "0"
# define BASH_RELEASE "experimental"
#endif
#define BASH_VERSION BASH_MAJOR "." BASH_MINOR "." BASH_PATCH "(" BASH_BUILD ")-" BASH_RELEASE
void sh_applyopts(Shopt_t);
extern const char bash_pre_rc[];
static char *login_files[4];
const char sh_bash1[] =
"[B?Enable brace group expansion. This option is only availabe in bash "
"compatibility mode. In ksh mode, brace group expansion is always on.]"
"[P?Do not follow symbolic links, use physical directory structure "
"instead. Only available in bash compatibility mode.]";
const char sh_bash2[] =
"[O]:?[shopt_option?\ashopt_option\a is one of the shell options accepted by "
"the \bshopt\b builtin. If \ashopt_option\a is present, \b-O\b sets "
"the value of that option; \b+O\b unsets it. If \ashopt_option\a is "
"not supplied, the names and values of the shell options accepted by "
"\bshopt\b are printed on the standard output. If the invocation "
"option is \b+O\b, the output is displayed in a format that may be "
"reused as input. Only available if invoked as \bbash\b.]"
"[01:init-file|rcfile]:[file?Execute commands from \afile\a instead of the "
"standard personal initialization file ~/.bashrc if the shell is "
"interactive. Only available if invoked as \bbash\b.]"
"[02:editing?For option compatibility with \bbash\b only. Ignored.]"
"[03:profile?Read either the system-wide startup file or any of the "
"personal initialization files. On by default for interactive "
"shells. Only available if invoked as \bbash\b.]"
"[04:posix?If invoked as \bbash\b, turn on POSIX compatibility. \bBash\b in "
"POSIX mode is not the same as \bksh\b.]"
"[05:version?Print version number and exit.]";
const char sh_optshopt[] =
"+[-1c?\n@(#)$Id: shopt (AT&T Research) 2003-02-13 $\n]"
"[-author?Karsten Fleischer <K.Fleischer@omnium.de>]"
USAGE_LICENSE
"[+NAME?shopt - set/unset variables controlling optional shell behavior]"
"[+DESCRIPTION?\bshopt\b sets or unsets variables controlling optional shell "
"behavior. With no options, or with the \b-p\b option, a list of all "
"settable options is displayed, with an indication of whether or not "
"each is set.]"
"[p?Causes output to be displayed in a form that may be reused as input.]"
"[s?Set each \aoptname\a.]"
"[u?Unset each \aoptname\a.]"
"[q?Suppress output (quiet mode). The return status indicates whether the "
"\aoptname\a is set or unset. If multiple \aoptname\a arguments are "
"given with \b-q\b, the return status is zero if all \aoptname\as are "
"enabled; non-zero otherwise.]"
"[o?Restricts the values of \aoptname\a to be those defined for the \b-o\b "
"option to the set builtin.]"
"[+?If either \b-s\b or \b-u\b is used with no \aoptname\a arguments, the "
"display is limited to those options which are set or unset.]"
"[+?\bshopt\b supports all bash options. Some settings do not have any effect "
"or are are always on and cannot be changed.]"
"[+?The value of \aoptname\a must be one of the following:]{"
"[+cdable_vars?If set, arguments to the \bcd\b command are "
"assumed to be names of variables whose values are to "
"be used if the usual \bcd\b proceeding fails.]"
"[+cdspell?Currently ignored.]"
"[+checkhash?Always on.]"
"[+checkwinsize?Currently ignored.]"
"[+cmdhist?Always on.]"
"[+dotglob?If set, include filenames beginning with a \b.\b "
"in the results of pathname expansion.]"
"[+execfail?Always on.]"
"[+expand_aliases?Always on.]"
"[+extglob?Enable extended pattern matching features.]"
"[+histappend?Always on.]"
"[+histreedit?If set and an edit mode is selected, the user "
"is given the opportunity to re-edit a failed history "
"substitution.]"
"[+histverify?If set and an edit mode is selected, the result "
"of a history substitution will not be executed "
"immediately but be placed in the edit buffer for "
"further modifications.]"
"[+hostcomplete?Currently ignored.]"
"[+huponexit?Currently ignored.]"
"[+interactive_comments?Always on.]"
"[+lithist?Always on.]"
"[+login_shell?This option is set if the shell is started as "
"a login shell. The value cannot be changed.]"
"[+mailwarn?Currently ignored.]"
"[+no_empty_cmd_completion?Always on.]"
"[+nocaseglob?Match filenames in a case-insensitive fashion "
"when performing filename expansion.]"
"[+nullglob?Allows filename patterns which match no files to "
"expand to a null string, rather than themselves.]"
"[+progcomp?Currently ignored.]"
"[+promptvars?Currently ignored.]"
"[+restricted_shell?This option is set if the shell is started "
"as a restricted shell. The value cannot be changed. "
"It is not reset during execution of startup files, "
"allowing the startup files to determine whether the "
"shell is restricted.]"
"[+shift_verbose?Currently ignored.]"
"[+sourcepath?If set, the \b.\b builtin uses the value of PATH "
"to find the directory containing the file supplied "
"as an argument.]"
"[+xpg_echo?If set, the \becho\b and \bprint\b builtins "
"expand backslash-escape sequences.]"
"}"
"\n"
"\n[optname ...]\n"
"\n"
"[+EXIT STATUS?]{"
"[+?The return status when listing options is zero if all \aoptnames\a "
"are enabled, non-zero otherwise. When setting or unsetting options, "
"the return status is zero unless an \aoptname\a is not a valid shell "
"option.]"
"}"
"[+SEE ALSO?\bset\b(1)]"
;
static void put_globignore(register Namval_t* np, const char *val, int flags, Namfun_t *fp)
{
if(val)
sh_onoption(SH_DOTGLOB);
else
sh_offoption(SH_DOTGLOB);
nv_putv(np,val,flags,fp);
}
const Namdisc_t SH_GLOBIGNORE_disc = { sizeof(Namfun_t), put_globignore };
struct funcname
{
Namfun_t hdr;
};
static void put_funcname(register Namval_t* np,const char *val,int flags,Namfun_t *fp)
{
if(val && !(flags&NV_RDONLY))
error_info.exit(1);
nv_putv(np,val,flags,fp);
}
const Namdisc_t SH_FUNCNAME_disc = { sizeof(struct funcname), put_funcname };
#define SET_SET 1
#define SET_UNSET 2
#define SET_NOARGS 4
int b_shopt(int argc,register char *argv[],void *extra)
{
Shell_t *shp = (Shell_t*)extra;
int n, f, ret=0;
Shopt_t newflags=shp->options, opt;
int verbose=PRINT_SHOPT|PRINT_ALL|PRINT_NO_HEADER|PRINT_VERBOSE;
int setflag=0, quietflag=0, oflag=0;
memset(&opt,0,sizeof(opt));
#if SHOPT_RAWONLY
on_option(&newflags,SH_VIRAW);
#endif
while((n = optget(argv,sh_optshopt)))
{
switch(n)
{
case 'p':
verbose&=~PRINT_VERBOSE;
break;
case 's':
case 'u':
setflag|=n=='s'?SET_SET:SET_UNSET;
if(setflag==(SET_SET|SET_UNSET))
{
errormsg(SH_DICT,ERROR_ERROR,"cannot set and unset options simultaneously");
error_info.errors++;
}
break;
case 'q':
quietflag=1;
break;
case 'o':
oflag=1;
verbose&=~PRINT_SHOPT;
break;
case ':':
errormsg(SH_DICT,2, "%s", opt_info.arg);
continue;
case '?':
errormsg(SH_DICT,ERROR_usage(0), "%s", opt_info.arg);
return(-1);
}
}
if(error_info.errors)
errormsg(SH_DICT,ERROR_usage(2),"%s",optusage(NIL(char*)));
argc -= opt_info.index;
if(argc==0)
{
if(setflag&SET_SET)
opt=newflags;
else if(setflag&SET_UNSET)
for(n=0;n<4;n++)
opt.v[n]=~newflags.v[n];
else
memset(&opt,0xff,sizeof(opt));
setflag=SET_NOARGS;
}
while(argc>0)
{
f=1;
n=sh_lookopt(argv[opt_info.index],&f);
if(n<=0||(setflag
&& (is_option(&opt,SH_INTERACTIVE)
|| is_option(&opt,SH_RESTRICTED)
|| is_option(&opt,SH_RESTRICTED2)
|| is_option(&opt,SH_BASH)
|| is_option(&opt,SH_LOGIN_SHELL)))
||(oflag&&(n&SH_BASHOPT)))
{
errormsg(SH_DICT,ERROR_ERROR, e_option, argv[opt_info.index]);
error_info.errors++;
ret=1;
}
else if(f)
on_option(&opt,n&0xff);
else
off_option(&opt,n&0xff);
opt_info.index++;
argc--;
}
if(setflag&(SET_SET|SET_UNSET))
{
if(setflag&SET_SET)
{
if(sh_isoption(SH_INTERACTIVE))
off_option(&opt,SH_NOEXEC);
if(is_option(&opt,SH_VI)||is_option(&opt,SH_EMACS)||is_option(&opt,SH_GMACS))
{
off_option(&newflags,SH_VI);
off_option(&newflags,SH_EMACS);
off_option(&newflags,SH_GMACS);
}
for(n=0;n<4;n++)
newflags.v[n] |= opt.v[n];
}
else if(setflag&SET_UNSET)
for(n=0;n<4;n++)
newflags.v[n] &= ~opt.v[n];
sh_applyopts(newflags);
shp->options = newflags;
if(is_option(&newflags,SH_XTRACE))
sh_trace(argv,1);
}
else if(!(setflag&SET_NOARGS))
{
for(n=0;n<4;n++)
ret+=((newflags.v[n]&opt.v[n])!=opt.v[n]);
}
if(!quietflag&&!(setflag&(SET_SET|SET_UNSET)))
sh_printopts(newflags,verbose,&opt);
return(ret);
}
void bash_init(int mode)
{
Sfio_t *iop;
Namval_t *np;
int n=0,xtrace,verbose;
if(mode>0)
goto reinit;
if(mode < 0)
{
if(sh_isoption(SH_LOGIN_SHELL) && !sh_isoption(SH_POSIX))
sh_source(&sh, NiL, sh_mactry((char*)e_bash_logout));
return;
}
if(sh_isstate(SH_PREINIT))
{
if(sh_isoption(SH_RESTRICTED))
sh_onoption(SH_RESTRICTED2);
sh_onoption(SH_HISTORY2);
sh_onoption(SH_INTERACTIVE_COMM);
sh_onoption(SH_SOURCEPATH);
sh_onoption(SH_HISTAPPEND);
sh_onoption(SH_CMDHIST);
sh_onoption(SH_LITHIST);
sh_onoption(SH_NOEMPTYCMDCOMPL);
if(sh.login_sh==2)
sh_onoption(SH_LOGIN_SHELL);
if(strcmp(astconf("CONFORMANCE",0,0),"standard")==0)
sh_onoption(SH_POSIX);
if(strcmp(astconf("UNIVERSE",0,0),"att")==0)
sh_onoption(SH_XPG_ECHO);
else
sh_offoption(SH_XPG_ECHO);
if(strcmp(astconf("PATH_RESOLVE",0,0),"physical")==0)
sh_onoption(SH_PHYSICAL);
else
sh_offoption(SH_PHYSICAL);
sh_addbuiltin("shopt", b_shopt, &sh);
if(np=nv_open("HOSTTYPE",sh.var_tree,0))
nv_putval(np, BASH_HOSTTYPE, NV_NOFREE);
if(np=nv_open("MACHTYPE",sh.var_tree,0))
nv_putval(np, BASH_MACHTYPE, NV_NOFREE);
if(np=nv_open("BASH_VERSION",sh.var_tree,0))
nv_putval(np, BASH_VERSION, NV_NOFREE);
if(np=nv_open("BASH_VERSINFO",sh.var_tree,0))
{
char *argv[7];
argv[0] = BASH_MAJOR;
argv[1] = BASH_MINOR;
argv[2] = BASH_PATCH;
argv[3] = BASH_BUILD;
argv[4] = BASH_RELEASE;
argv[5] = BASH_MACHTYPE;
argv[6] = 0;
nv_setvec(np, 0, 6, argv);
nv_onattr(np,NV_RDONLY);
}
return;
}
if(np=nv_open("BASH_ENV",sh.var_tree,0))
{
const Namdisc_t *dp = nv_discfun(NV_DCRESTRICT);
Namfun_t *fp = calloc(dp->dsize,1);
fp->disc = dp;
nv_disc(np, fp, 0);
}
if(np=nv_open("GLOBIGNORE",sh.var_tree,0))
{
const Namdisc_t *dp = &SH_GLOBIGNORE_disc;
Namfun_t *fp = calloc(dp->dsize,1);
fp->disc = dp;
nv_disc(np, fp, 0);
}
n=0;
if(sh_isoption(SH_LOGIN_SHELL))
{
if(!sh_isoption(SH_POSIX))
{
login_files[n++] = (char*)e_bash_profile;
login_files[n++] = (char*)e_bash_login;
}
login_files[n++] = (char*)e_profile;
}
sh.login_files = login_files;
reinit:
xtrace = sh_isoption(SH_XTRACE);
sh_offoption(SH_XTRACE);
verbose = sh_isoption(SH_VERBOSE);
sh_offoption(SH_VERBOSE);
if(np = nv_open("SHELLOPTS", sh.var_tree, NV_NOADD))
nv_offattr(np,NV_RDONLY);
iop = sfopen(NULL, bash_pre_rc, "s");
sh_eval(iop,0);
if(xtrace)
sh_offoption(SH_XTRACE);
if(verbose)
sh_offoption(SH_VERBOSE);
}