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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1982-2012 AT&T Intellectual Property *
* and is licensed under the *
* Eclipse Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.eclipse.org/org/documents/epl-v10.html *
* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* David Korn <dgk@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* getopts optstring name [arg...]
*
* David Korn
* AT&T Labs
* research!dgk
*
*/
#include "defs.h"
#include "variables.h"
#include <error.h>
#include <nval.h>
#include "builtins.h"
static int infof(Opt_t* op, Sfio_t* sp, const char* s, Optdisc_t* dp)
{
Shell_t *shp = *(Shell_t**)(dp+1);
Stk_t *stkp = shp->stk;
if(nv_search(s,shp->fun_tree,0))
{
int savtop = stktell(stkp);
char *savptr = stkfreeze(stkp,0);
sfputc(stkp,'$');
sfputc(stkp,'(');
sfputr(stkp,s,')');
sfputr(sp,sh_mactry(shp,stkfreeze(stkp,1)),-1);
stkset(stkp,savptr,savtop);
}
return(1);
}
int b_getopts(int argc,char *argv[],Shbltin_t *context)
{
register char *options=error_info.context->id;
register Namval_t *np;
register int flag, mode;
register Shell_t *shp = context->shp;
char value[2], key[2];
int jmpval,extended;
volatile int r= -1;
struct checkpt buff, *pp;
struct {
Optdisc_t hdr;
Shell_t *sh;
} disc;
memset(&disc, 0, sizeof(disc));
disc.hdr.version = OPT_VERSION;
disc.hdr.infof = infof;
disc.sh = shp;
value[1] = 0;
key[1] = 0;
while((flag = optget(argv,sh_optgetopts))) switch(flag)
{
case 'a':
options = opt_info.arg;
break;
case ':':
errormsg(SH_DICT,2, "%s", opt_info.arg);
break;
case '?':
errormsg(SH_DICT,ERROR_usage(2), "%s", opt_info.arg);
break;
}
argv += opt_info.index;
argc -= opt_info.index;
if(error_info.errors || argc<2)
errormsg(SH_DICT,ERROR_usage(2), "%s", optusage((char*)0));
error_info.context->flags |= ERROR_SILENT;
error_info.id = options;
options = argv[0];
np = nv_open(argv[1],shp->var_tree,NV_NOASSIGN|NV_VARNAME);
if(argc>2)
{
argv +=1;
argc -=1;
}
else
{
argv = shp->st.dolv;
argc = shp->st.dolc;
}
opt_info.index = shp->st.optindex;
opt_info.offset = shp->st.optchar;
if(mode= (*options==':'))
options++;
extended = *options=='\n' && *(options+1)=='[' || *options=='[' && *(options+1)=='-';
sh_pushcontext(shp,&buff,1);
jmpval = sigsetjmp(buff.buff,0);
if(jmpval)
{
sh_popcontext(shp,&buff);
shp->st.opterror = 1;
if(r==0)
return(2);
pp = (struct checkpt*)shp->jmplist;
pp->mode = SH_JMPERREXIT;
sh_exit(2);
}
opt_info.disc = &disc.hdr;
switch(opt_info.index>=0 && opt_info.index<=argc?(opt_info.num= LONG_MIN,flag=optget(argv,options)):0)
{
case '?':
if(mode==0)
errormsg(SH_DICT,ERROR_usage(2), "%s", opt_info.arg);
opt_info.option[1] = '?';
/* FALL THRU */
case ':':
key[0] = opt_info.option[1];
if(strmatch(opt_info.arg,"*unknown*"))
flag = '?';
if(mode)
opt_info.arg = key;
else
{
errormsg(SH_DICT,2, "%s", opt_info.arg);
opt_info.arg = 0;
flag = '?';
}
*(options = value) = flag;
shp->st.opterror = 1;
if (opt_info.offset != 0 && !argv[opt_info.index][opt_info.offset])
{
opt_info.offset = 0;
opt_info.index++;
}
break;
case 0:
if(shp->st.opterror)
{
char *com[2];
com[0] = "-?";
com[1] = 0;
flag = opt_info.index;
opt_info.index = 0;
optget(com,options);
opt_info.index = flag;
if(!mode && strchr(options,' '))
errormsg(SH_DICT,ERROR_usage(2), "%s", optusage((char*)0));
}
opt_info.arg = 0;
options = value;
*options = '?';
r=1;
opt_info.offset = 0;
break;
default:
options = opt_info.option + (*opt_info.option!='+');
}
if(r<0)
r = 0;
error_info.context->flags &= ~ERROR_SILENT;
shp->st.optindex = opt_info.index;
shp->st.optchar = opt_info.offset;
nv_putval(np, options, 0);
nv_close(np);
np = nv_open(nv_name(OPTARGNOD),shp->var_tree,NV_NOSCOPE);
if(opt_info.num == LONG_MIN)
nv_putval(np, opt_info.arg, NV_RDONLY);
else if (opt_info.arg && opt_info.num > 0 && isalpha((char)opt_info.num) && !isdigit(opt_info.arg[0]) && opt_info.arg[0] != '-' && opt_info.arg[0] != '+')
{
key[0] = (char)opt_info.num;
key[1] = 0;
nv_putval(np, key, NV_RDONLY);
}
else if(extended)
{
Sfdouble_t d;
d = opt_info.number;
nv_putval(np, (char*)&d, NV_LDOUBLE|NV_RDONLY);
}
else
nv_putval(np, opt_info.arg, NV_RDONLY);
nv_close(np);
sh_popcontext(shp,&buff);
opt_info.disc = 0;
return(r);
}
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