#pragma prototyped

#include "defs.h"

#include <error.h>

#include "path.h"

#include "name.h"

#include "history.h"

#include "builtins.h"

#include "variables.h"

#include "FEATURE/dynamic"

struct tdata

{

Shell_t *sh;

Namval_t *tp;

Sfio_t *outfile;

char *prefix;

char *tname;

char *help;

short aflag;

short pflag;

int argnum;

int scanmask;

Dt_t *scanroot;

char **argnam;

};

static int print_namval(Sfio_t*, Namval_t*, int, struct tdata*);

static void print_attribute(Namval_t*,void*);

static void print_all(Sfio_t*, Dt_t*, struct tdata*);

static void print_scan(Sfio_t*, int, Dt_t*, int, struct tdata*);

static int b_unall(int, char**, Dt_t*, Shell_t*);

static int b_common(char**, int, Dt_t*, struct tdata*);

static void pushname(Namval_t*,void*);

static void(*nullscan)(Namval_t*,void*);

static Namval_t *load_class(const char *name)

{

errormsg(SH_DICT,ERROR_exit(1),"%s: type not loadable",name);

return(0);

}

#if 0

/* for the dictionary generator */

int b_export(int argc,char *argv[],void *extra){}

#endif

int b_readonly(int argc,char *argv[],void *extra)

{

register int flag;

char *command = argv[0];

struct tdata tdata;

NOT_USED(argc);

memset((void*)&tdata,0,sizeof(tdata));

tdata.sh = ((Shbltin_t*)extra)->shp;

tdata.aflag = '-';

while((flag = optget(argv,*command=='e'?sh_optexport:sh_optreadonly))) switch(flag)

{

case 'p':

tdata.prefix = command;

break;

case ':':

errormsg(SH_DICT,2, "%s", opt_info.arg);

break;

case '?':

errormsg(SH_DICT,ERROR_usage(0), "%s", opt_info.arg);

return(2);

}

if(error_info.errors)

errormsg(SH_DICT,ERROR_usage(2),optusage(NIL(char*)));

argv += (opt_info.index-1);

if(*command=='r')

flag = (NV_ASSIGN|NV_RDONLY|NV_VARNAME);

#ifdef _ENV_H

else if(!argv[1])

{

char *cp,**env=env_get(tdata.sh->env);

while(cp = *env++)

{

if(tdata.prefix)

sfputr(sfstdout,tdata.prefix,' ');

sfprintf(sfstdout,"%s\n",sh_fmtq(cp));

}

return(0);

}

#endif

else

{

flag = (NV_ASSIGN|NV_EXPORT|NV_IDENT);

if(!tdata.sh->prefix)

tdata.sh->prefix = "";

}

return(b_common(argv,flag,tdata.sh->var_tree, &tdata));

}

int b_alias(int argc,register char *argv[],void *extra)

{

register unsigned flag = NV_NOARRAY|NV_NOSCOPE|NV_ASSIGN;

register Dt_t *troot;

register int n;

struct tdata tdata;

NOT_USED(argc);

memset((void*)&tdata,0,sizeof(tdata));

tdata.sh = ((Shbltin_t*)extra)->shp;

troot = tdata.sh->alias_tree;

if(*argv[0]=='h')

flag = NV_TAGGED;

if(argv[1])

{

opt_info.offset = 0;

opt_info.index = 1;

*opt_info.option = 0;

tdata.argnum = 0;

tdata.aflag = *argv[1];

while((n = optget(argv,sh_optalias))) switch(n)

{

case 'p':

tdata.prefix = argv[0];

break;

case 't':

flag |= NV_TAGGED;

break;

case 'x':

flag |= NV_EXPORT;

break;

case ':':

errormsg(SH_DICT,2, "%s", opt_info.arg);

break;

case '?':

errormsg(SH_DICT,ERROR_usage(0), "%s", opt_info.arg);

return(2);

}

if(error_info.errors)

errormsg(SH_DICT,ERROR_usage(2),"%s",optusage(NIL(char*)));

argv += (opt_info.index-1);

if(flag&NV_TAGGED)

{

/* hacks to handle hash -r | -- */

if(argv[1] && argv[1][0]=='-')

{

if(argv[1][1]=='r' && argv[1][2]==0)

{

nv_putval(PATHNOD,nv_getval(PATHNOD),NV_RDONLY);

argv++;

if(!argv[1])

return(0);

}

if(argv[1][0]=='-')

{

if(argv[1][1]=='-' && argv[1][2]==0)

argv++;

else

errormsg(SH_DICT, ERROR_exit(1), e_option, argv[1]);

}

}

troot = tdata.sh->track_tree;

}

}

return(b_common(argv,flag,troot,&tdata));

}

#if 0

/* for the dictionary generator */

int b_local(int argc,char *argv[],void *extra){}

#endif

int b_typeset(int argc,register char *argv[],void *extra)

{

register int n, flag = NV_VARNAME|NV_ASSIGN;

struct tdata tdata;

const char *optstring = sh_opttypeset;

Namdecl_t *ntp = (Namdecl_t*)((Shbltin_t*)extra)->ptr;

Dt_t *troot;

int isfloat=0, shortint=0, sflag=0;

NOT_USED(argc);

memset((void*)&tdata,0,sizeof(tdata));

tdata.sh = ((Shbltin_t*)extra)->shp;

if(ntp)

{

tdata.tp = ntp->tp;

opt_info.disc = (Optdisc_t*)ntp->optinfof;

optstring = ntp->optstring;

}

troot = tdata.sh->var_tree;

while((n = optget(argv,optstring)))

{

switch(n)

{

case 'a':

flag |= NV_IARRAY;

if(opt_info.arg && *opt_info.arg!='[')

{

opt_info.index--;

goto endargs;

}

tdata.tname = opt_info.arg;

break;

case 'A':

flag |= NV_ARRAY;

break;

case 'C':

flag |= NV_COMVAR;

break;

case 'E':

/* The following is for ksh88 compatibility */

if(opt_info.offset && !strchr(argv[opt_info.index],'E'))

{

tdata.argnum = (int)opt_info.num;

break;

}

case 'F':

case 'X':

if(!opt_info.arg || (tdata.argnum = opt_info.num) <0)

tdata.argnum = 10;

isfloat = 1;

if(n=='E')

{

flag &= ~NV_HEXFLOAT;

flag |= NV_EXPNOTE;

}

else if(n=='X')

{

flag &= ~NV_EXPNOTE;

flag |= NV_HEXFLOAT;

}

break;

case 'b':

flag |= NV_BINARY;

break;

case 'm':

flag |= NV_MOVE;

break;

case 'n':

flag &= ~NV_VARNAME;

flag |= (NV_REF|NV_IDENT);

break;

case 'H':

flag |= NV_HOST;

break;

case 'T':

flag |= NV_TYPE;

tdata.prefix = opt_info.arg;

break;

case 'L': case 'Z': case 'R':

if(tdata.argnum==0)

tdata.argnum = (int)opt_info.num;

if(tdata.argnum < 0)

errormsg(SH_DICT,ERROR_exit(1), e_badfield, tdata.argnum);

if(n=='Z')

flag |= NV_ZFILL;

else

{

flag &= ~(NV_LJUST|NV_RJUST);

flag |= (n=='L'?NV_LJUST:NV_RJUST);

}

break;

case 'f':

flag &= ~(NV_VARNAME|NV_ASSIGN);

troot = tdata.sh->fun_tree;

break;

case 'i':

if(!opt_info.arg || (tdata.argnum = opt_info.num) <0)

tdata.argnum = 10;

flag |= NV_INTEGER;

break;

case 'l':

flag |= NV_UTOL;

break;

case 'p':

tdata.prefix = argv[0];

tdata.pflag = 1;

break;

case 'r':

flag |= NV_RDONLY;

break;

#ifdef SHOPT_TYPEDEF

case 'S':

sflag=1;

break;

case 'h':

tdata.help = opt_info.arg;

break;

#endif /*SHOPT_TYPEDEF*/

case 's':

shortint=1;

break;

case 't':

flag |= NV_TAGGED;

break;

case 'u':

flag |= NV_LTOU;

break;

case 'x':

flag &= ~NV_VARNAME;

flag |= (NV_EXPORT|NV_IDENT);

break;

case ':':

errormsg(SH_DICT,2, "%s", opt_info.arg);

break;

case '?':

errormsg(SH_DICT,ERROR_usage(0), "%s", opt_info.arg);

opt_info.disc = 0;

return(2);

}

if(tdata.aflag==0)

tdata.aflag = *opt_info.option;

}

endargs:

argv += opt_info.index;

opt_info.disc = 0;

/* handle argument of + and - specially */

if(*argv && argv[0][1]==0 && (*argv[0]=='+' || *argv[0]=='-'))

tdata.aflag = *argv[0];

else

argv--;

if((flag&NV_ZFILL) && !(flag&NV_LJUST))

flag |= NV_RJUST;

if((flag&NV_INTEGER) && (flag&(NV_LJUST|NV_RJUST|NV_ZFILL)))

error_info.errors++;

if((flag&NV_BINARY) && (flag&(NV_LJUST|NV_UTOL|NV_LTOU)))

error_info.errors++;

if((flag&NV_MOVE) && (flag&~(NV_MOVE|NV_VARNAME|NV_ASSIGN)))

error_info.errors++;

if((flag&NV_REF) && (flag&~(NV_REF|NV_IDENT|NV_ASSIGN)))

error_info.errors++;

if(troot==tdata.sh->fun_tree && ((isfloat || flag&~(NV_FUNCT|NV_TAGGED|NV_EXPORT|NV_LTOU))))

error_info.errors++;

if(error_info.errors)

errormsg(SH_DICT,ERROR_usage(2),"%s", optusage(NIL(char*)));

if(isfloat)

flag |= NV_DOUBLE;

if(shortint)

flag |= NV_SHORT|NV_INTEGER;

if(sflag)

{

if(tdata.sh->mktype)

flag |= NV_REF|NV_TAGGED;

else if(!tdata.sh->typeinit)

flag |= NV_STATIC|NV_IDENT;

}

if(tdata.sh->fn_depth && !tdata.pflag)

flag |= NV_NOSCOPE;

if(flag&NV_TYPE)

{

Stk_t *stkp = tdata.sh->stk;

int offset = stktell(stkp);

sfputr(stkp,NV_CLASS,-1);

if(NV_CLASS[sizeof(NV_CLASS)-2]!='.')

sfputc(stkp,'.');

sfputr(stkp,tdata.prefix,0);

tdata.tp = nv_open(stkptr(stkp,offset),tdata.sh->var_tree,NV_VARNAME|NV_NOARRAY|NV_NOASSIGN);

stkseek(stkp,offset);

if(!tdata.tp)

errormsg(SH_DICT,ERROR_exit(1),"%s: unknown type",tdata.prefix);

tdata.tp->nvenv = tdata.help;

flag &= ~NV_TYPE;

}

else if(tdata.aflag==0 && ntp && ntp->tp)

tdata.aflag = '-';

if(!tdata.sh->mktype)

tdata.help = 0;

return(b_common(argv,flag,troot,&tdata));

}

static void print_value(Sfio_t *iop, Namval_t *np, struct tdata *tp)

{

char *name;

if(nv_isnull(np))

return;

sfputr(iop,nv_name(np),tp->aflag=='+'?'\n':'=');

if(tp->aflag=='+')

return;

if(nv_isarray(np) && nv_arrayptr(np))

{

nv_outnode(np,iop,-1,0);

sfwrite(iop,")\n",2);

}

else

{

if(nv_isvtree(np))

nv_onattr(np,NV_EXPORT);

if(!(name = nv_getval(np)))

name = Empty;

if(!nv_isvtree(np))

name = sh_fmtq(name);

sfputr(iop,name,'\n');

}

}

static int b_common(char **argv,register int flag,Dt_t *troot,struct tdata *tp)

{

register char *name;

char *last = 0;

int nvflags=(flag&(NV_ARRAY|NV_NOARRAY|NV_VARNAME|NV_IDENT|NV_ASSIGN|NV_STATIC|NV_MOVE));

int r=0, ref=0, comvar=(flag&NV_COMVAR),iarray=(flag&NV_IARRAY);

Shell_t *shp =tp->sh;

if(!shp->prefix)

{

if(!tp->pflag)

nvflags |= NV_NOSCOPE;

}

else if(*shp->prefix==0)

shp->prefix = 0;

flag &= ~(NV_NOARRAY|NV_NOSCOPE|NV_VARNAME|NV_IDENT|NV_STATIC|NV_COMVAR|NV_IARRAY);

if(argv[1])

{

if(flag&NV_REF)

{

flag &= ~NV_REF;

ref=1;

if(tp->aflag!='-')

nvflags |= NV_NOREF;

}

if(tp->pflag)

nvflags |= NV_NOREF;

while(name = *++argv)

{

register unsigned newflag;

register Namval_t *np;

unsigned curflag;

if(troot == shp->fun_tree)

{

/*

flag &= ~NV_ASSIGN;

if(flag&NV_LTOU)

{

/* Function names cannot be special builtin */

if((np=nv_search(name,shp->bltin_tree,0)) && nv_isattr(np,BLT_SPC))

errormsg(SH_DICT,ERROR_exit(1),e_badfun,name);

np = nv_open(name,sh_subfuntree(1),NV_NOARRAY|NV_IDENT|NV_NOSCOPE);

}

else if((np=nv_search(name,troot,0)) && !is_afunction(np))

np = 0;

if(np && ((flag&NV_LTOU) || !nv_isnull(np) || nv_isattr(np,NV_LTOU)))

{

if(flag==0)

{

print_namval(sfstdout,np,tp->aflag=='+',tp);

continue;

}

if(shp->subshell)

sh_subfork();

if(tp->aflag=='-')

nv_onattr(np,flag|NV_FUNCTION);

else if(tp->aflag=='+')

nv_offattr(np,flag);

}

else

r++;

if(tp->help)

{

int offset = stktell(shp->stk);

sfputr(shp->stk,shp->prefix,'.');

sfputr(shp->stk,name,0);

if((np=nv_search(stkptr(shp->stk,offset),troot,0)) && np->nvalue.cp)

np->nvalue.rp->help = tp->help;

stkseek(shp->stk,offset);

}

continue;

}

/* tracked alias */

if(troot==shp->track_tree && tp->aflag=='-')

{

np = nv_search(name,troot,NV_ADD);

path_alias(np,path_absolute(nv_name(np),NIL(Pathcomp_t*)));

continue;

}

np = nv_open(name,troot,nvflags|NV_ARRAY);

if(tp->pflag)

{

nv_attribute(np,sfstdout,tp->prefix,1);

print_value(sfstdout,np,tp);

continue;

}

if(flag==NV_ASSIGN && !ref && tp->aflag!='-' && !strchr(name,'='))

{

if(troot!=shp->var_tree && (nv_isnull(np) || !print_namval(sfstdout,np,0,tp)))

{

sfprintf(sfstderr,sh_translate(e_noalias),name);

r++;

}

if(!comvar && !iarray)

continue;

}

if(troot==shp->var_tree && ((tp->tp && !nv_isarray(np)) || !shp->st.real_fun && (nvflags&NV_STATIC)) && !strchr(name,'=') && !(shp->envlist && nv_onlist(shp->envlist,name)))

_nv_unset(np,0);

if(troot==shp->var_tree)

{

if(iarray)

{

if(tp->tname)

nv_atypeindex(np,tp->tname+1);

else if(nv_isnull(np))

nv_onattr(np,NV_ARRAY|(comvar?NV_NOFREE:0));

else

nv_putsub(np, (char*)0, 0);

}

else if(nvflags&NV_ARRAY)

{

if(comvar)

{

_nv_unset(np,NV_RDONLY);

nv_onattr(np,NV_NOFREE);

}

nv_setarray(np,nv_associative);

}

else if(comvar && !nv_rename(np,flag|NV_COMVAR))

nv_setvtree(np);

}

if(flag&NV_MOVE)

{

nv_rename(np, flag);

nv_close(np);

continue;

}

if(tp->tp)

{

nv_settype(np,tp->tp,tp->aflag=='-'?0:NV_APPEND);

flag = (np->nvflag&NV_NOCHANGE);

}

curflag = np->nvflag;

flag &= ~NV_ASSIGN;

if(last=strchr(name,'='))

*last = 0;

if (tp->aflag == '-')

{

if((flag&NV_EXPORT) && strchr(name,'.'))

errormsg(SH_DICT,ERROR_exit(1),e_badexport,name);

#if SHOPT_BSH

if(flag&NV_EXPORT)

nv_offattr(np,NV_IMPORT);

#endif /* SHOPT_BSH */

newflag = curflag;

if(flag&~NV_NOCHANGE)

newflag &= NV_NOCHANGE;

newflag |= flag;

if (flag & (NV_LJUST|NV_RJUST))

{

if(!(flag&NV_RJUST))

newflag &= ~NV_RJUST;

else if(!(flag&NV_LJUST))

newflag &= ~NV_LJUST;

}

if(!(flag&NV_INTEGER))

{

if (flag & NV_UTOL)

newflag &= ~NV_LTOU;

else if (flag & NV_LTOU)

newflag &= ~NV_UTOL;

}

}

else

{

if((flag&NV_RDONLY) && (curflag&NV_RDONLY))

errormsg(SH_DICT,ERROR_exit(1),e_readonly,nv_name(np));

newflag = curflag & ~flag;

}

if (tp->aflag && (tp->argnum>0 || (curflag!=newflag)))

{

if(shp->subshell)

sh_assignok(np,1);

if(troot!=shp->var_tree)

nv_setattr(np,newflag&~NV_ASSIGN);

else

{

char *oldname=0;

int len=strlen(name);

if(tp->argnum==1 && newflag==NV_INTEGER && nv_isattr(np,NV_INTEGER))

tp->argnum = 10;

/* use reference name for export */

if((newflag^curflag)&NV_EXPORT)

{

oldname = np->nvname;

np->nvname = name;

}

if(np->nvfun && !nv_isarray(np) && name[len-1]=='.')

newflag |= NV_NODISC;

nv_newattr (np, newflag&~NV_ASSIGN,tp->argnum);

if(oldname)

np->nvname = oldname;

}

}

if(tp->help && !nv_isattr(np,NV_MINIMAL|NV_EXPORT))

{

np->nvenv = tp->help;

nv_onattr(np,NV_EXPORT);

}

if(last)

*last = '=';

/* set or unset references */

if(ref)

{

if(tp->aflag=='-')

{

Dt_t *hp=0;

if(nv_isattr(np,NV_PARAM) && shp->st.prevst)

{

if(!(hp=(Dt_t*)shp->st.prevst->save_tree))

hp = dtvnext(shp->var_tree);

}

if(tp->sh->mktype)

nv_onattr(np,NV_REF|NV_FUNCT);

else

nv_setref(np,hp,NV_VARNAME);

}

else

nv_unref(np);

}

nv_close(np);

}

}

else if(!tp->sh->envlist)

{

if(shp->prefix)

errormsg(SH_DICT,2, "%s: compound assignment requires sub-variable name",shp->prefix);

if(tp->aflag)

{

if(troot==shp->fun_tree)

{

flag |= NV_FUNCTION;

tp->prefix = 0;

}

else if(troot==shp->var_tree)

{

flag |= (nvflags&NV_ARRAY);

if(flag&NV_IARRAY)

flag |= NV_ARRAY;

}

print_scan(sfstdout,flag,troot,tp->aflag=='+',tp);

}

else if(troot==shp->alias_tree)

print_scan(sfstdout,0,troot,0,tp);

else

print_all(sfstdout,troot,tp);

sfsync(sfstdout);

}

return(r);

}

typedef void (*Iptr_t)(int,void*);

typedef int (*Fptr_t)(int, char*[], void*);

#define GROWLIB 4

static void **liblist;

static unsigned short *libattr;

static int nlib;

static int maxlib;

void **sh_getliblist(void)

{

return(liblist);

}

#if SHOPT_DYNAMIC

int sh_addlib(void* library)

{

register int n;

register int r;

Iptr_t initfn;

Shbltin_t *sp = &sh.bltindata;

sp->nosfio = 0;

for (n = r = 0; n < nlib; n++)

{

if (r)

{

liblist[n-1] = liblist[n];

libattr[n-1] = libattr[n];

}

else if (liblist[n] == library)

r++;

}

if (r)

nlib--;

else if ((initfn = (Iptr_t)dlllook(library, "lib_init")))

(*initfn)(0,sp);

if (nlib >= maxlib)

{

maxlib += GROWLIB;

if (liblist)

{

liblist = (void**)realloc((void*)liblist, (maxlib+1)*sizeof(void**));

libattr = (unsigned short*)realloc((void*)liblist, (maxlib+1)*sizeof(unsigned short*));

}

else

{

liblist = (void**)malloc((maxlib+1)*sizeof(void**));

libattr = (unsigned short*)malloc((maxlib+1)*sizeof(unsigned short*));

}

}

libattr[nlib] = (sp->nosfio?BLT_NOSFIO:0);

liblist[nlib++] = library;

liblist[nlib] = 0;

return !r;

}

#else

int sh_addlib(void* library)

{

return 0;

}

#endif /* SHOPT_DYNAMIC */

int b_builtin(int argc,char *argv[],void *extra)

{

register char *arg=0, *name;

register int n, r=0, flag=0;

register Namval_t *np;

long dlete=0;

struct tdata tdata;

Fptr_t addr;

Stk_t *stkp;

void *library=0;

char *errmsg;

NOT_USED(argc);

memset(&tdata,0,sizeof(tdata));

tdata.sh = ((Shbltin_t*)extra)->shp;

stkp = tdata.sh->stk;

while (n = optget(argv,sh_optbuiltin)) switch (n)

{

case 's':

flag = BLT_SPC;

break;

case 'd':

dlete=1;

break;

case 'f':

#if SHOPT_DYNAMIC

arg = opt_info.arg;

#else

errormsg(SH_DICT,2, "adding built-ins not supported");

error_info.errors++;

#endif /* SHOPT_DYNAMIC */

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;

if(error_info.errors)

errormsg(SH_DICT,ERROR_usage(2),"%s", optusage(NIL(char*)));

if(arg || *argv)

{

if(sh_isoption(SH_RESTRICTED))

errormsg(SH_DICT,ERROR_exit(1),e_restricted,argv[-opt_info.index]);

if(sh_isoption(SH_PFSH))

errormsg(SH_DICT,ERROR_exit(1),e_pfsh,argv[-opt_info.index]);

if(tdata.sh->subshell)

sh_subfork();

}

#if SHOPT_DYNAMIC

if(arg)

{

#if (_AST_VERSION>=20040404)

if(!(library = dllplug(SH_ID,arg,NIL(char*),RTLD_LAZY,NIL(char*),0)))

#else

if(!(library = dllfind(arg,NIL(char*),RTLD_LAZY,NIL(char*),0)))

#endif

{

errormsg(SH_DICT,ERROR_exit(0),"%s: %s",arg,dlerror());

return(1);

}

sh_addlib(library);

}

else

#endif /* SHOPT_DYNAMIC */

if(*argv==0 && !dlete)

{

print_scan(sfstdout, flag, tdata.sh->bltin_tree, 1, &tdata);

return(0);

}

r = 0;

flag = stktell(stkp);

while(arg = *argv)

{

name = path_basename(arg);

sfwrite(stkp,"b_",2);

sfputr(stkp,name,0);

errmsg = 0;

addr = 0;

for(n=(nlib?nlib:dlete); --n>=0;)

{

/* (char*) added for some sgi-mips compilers */

#if SHOPT_DYNAMIC

if(dlete || (addr = (Fptr_t)dlllook(liblist[n],stkptr(stkp,flag))))

#else

if(dlete)

#endif /* SHOPT_DYNAMIC */

{

if(np = sh_addbuiltin(arg, addr,pointerof(dlete)))

{

if(dlete || nv_isattr(np,BLT_SPC))

errmsg = "restricted name";

else

nv_onattr(np,libattr[n]);

}

break;

}

}

if(!dlete && !addr)

{

np = sh_addbuiltin(arg, 0 ,0);

if(np && nv_isattr(np,BLT_SPC))

errmsg = "restricted name";

else if(!np)

errmsg = "not found";

}

if(errmsg)

{

errormsg(SH_DICT,ERROR_exit(0),"%s: %s",*argv,errmsg);

r = 1;

}

stkseek(stkp,flag);

argv++;

}

return(r);

}

int b_set(int argc,register char *argv[],void *extra)

{

struct tdata tdata;

memset(&tdata,0,sizeof(tdata));

tdata.sh = ((Shbltin_t*)extra)->shp;

tdata.prefix=0;

if(argv[1])

{

if(sh_argopts(argc,argv,tdata.sh) < 0)

return(2);

if(sh_isoption(SH_VERBOSE))

sh_onstate(SH_VERBOSE);

else

sh_offstate(SH_VERBOSE);

if(sh_isoption(SH_MONITOR))

sh_onstate(SH_MONITOR);

else

sh_offstate(SH_MONITOR);

}

else

/*scan name chain and print*/

print_scan(sfstdout,0,tdata.sh->var_tree,0,&tdata);

return(0);

}

int b_unalias(int argc,register char *argv[],void *extra)

{

Shell_t *shp = ((Shbltin_t*)extra)->shp;

return(b_unall(argc,argv,shp->alias_tree,shp));

}

int b_unset(int argc,register char *argv[],void *extra)

{

Shell_t *shp = ((Shbltin_t*)extra)->shp;

return(b_unall(argc,argv,shp->var_tree,shp));

}

static int b_unall(int argc, char **argv, register Dt_t *troot, Shell_t* shp)

{

register Namval_t *np;

register const char *name;

register int r;

Dt_t *dp;

int nflag=0,all=0,isfun;

NOT_USED(argc);

if(troot==shp->alias_tree)

{

name = sh_optunalias;

if(shp->subshell)

troot = sh_subaliastree(0);

}

else

name = sh_optunset;

while(r = optget(argv,name)) switch(r)

{

case 'f':

troot = sh_subfuntree(1);

break;

case 'a':

all=1;

break;

case 'n':

nflag = NV_NOREF;

case 'v':

troot = shp->var_tree;

break;

case ':':

errormsg(SH_DICT,2, "%s", opt_info.arg);

break;

case '?':

errormsg(SH_DICT,ERROR_usage(0), "%s", opt_info.arg);

return(2);

}

argv += opt_info.index;

if(error_info.errors || (*argv==0 &&!all))

errormsg(SH_DICT,ERROR_usage(2),"%s",optusage(NIL(char*)));

if(!troot)

return(1);

r = 0;

if(troot==shp->var_tree)

nflag |= NV_VARNAME;

else

nflag = NV_NOSCOPE;

if(all)

dtclear(troot);

else while(name = *argv++)

{

if(np=nv_open(name,troot,NV_NOADD|NV_NOFAIL|nflag))

{

if(is_abuiltin(np))

{

r = 1;

continue;

}

isfun = is_afunction(np);

if(troot==shp->var_tree)

{

if(nv_isarray(np) && name[strlen(name)-1]==']' && !nv_getsub(np))

{

r=1;

continue;

}

if(shp->subshell)

np=sh_assignok(np,0);

}

nv_unset(np);

nv_close(np);

if(troot==shp->var_tree && shp->st.real_fun && (dp=shp->var_tree->walk) && dp==shp->st.real_fun->sdict)

nv_delete(np,dp,NV_NOFREE);

else if(isfun)

nv_delete(np,troot,NV_NOFREE);

}

else

r = 1;

}

return(r);

}

static int print_namval(Sfio_t *file,register Namval_t *np,register int flag, struct tdata *tp)

{

register char *cp;

sh_sigcheck();

if(flag)

flag = '\n';

if(nv_isattr(np,NV_NOPRINT|NV_INTEGER)==NV_NOPRINT)

{

if(is_abuiltin(np))

sfputr(file,nv_name(np),'\n');

return(0);

}

if(tp->prefix)

{

if(*tp->prefix=='t')

nv_attribute(np,tp->outfile,tp->prefix,tp->aflag);

else

sfputr(file,tp->prefix,' ');

}

if(is_afunction(np))

{

Sfio_t *iop=0;

char *fname=0;

if(!flag && !np->nvalue.ip)

sfputr(file,"typeset -fu",' ');

else if(!flag && !nv_isattr(np,NV_FPOSIX))

sfputr(file,"function",' ');

sfputr(file,nv_name(np),-1);

if(nv_isattr(np,NV_FPOSIX))

sfwrite(file,"()",2);

if(np->nvalue.ip && np->nvalue.rp->hoffset>=0)

fname = np->nvalue.rp->fname;

else

flag = '\n';

if(flag)

{

if(tp->pflag && np->nvalue.ip && np->nvalue.rp->hoffset>=0)

sfprintf(file," #line %d %s\n",np->nvalue.rp->lineno,fname?sh_fmtq(fname):"");

else

sfputc(file, '\n');

}

else

{

if(nv_isattr(np,NV_FTMP))

{

fname = 0;

iop = tp->sh->heredocs;

}

else if(fname)

iop = sfopen(iop,fname,"r");

else if(tp->sh->hist_ptr)

iop = (tp->sh->hist_ptr)->histfp;

if(iop && sfseek(iop,(Sfoff_t)np->nvalue.rp->hoffset,SEEK_SET)>=0)

sfmove(iop,file, nv_size(np), -1);

else

flag = '\n';

if(fname)

sfclose(iop);

}

return(nv_size(np)+1);

}

if(nv_arrayptr(np))

{

print_value(file,np,tp);

return(0);

}

if(nv_isvtree(np))

nv_onattr(np,NV_EXPORT);

if(cp=nv_getval(np))

{

sfputr(file,nv_name(np),-1);

if(!flag)

flag = '=';

sfputc(file,flag);

if(flag != '\n')

{

if(nv_isref(np) && nv_refsub(np))

{

sfputr(file,sh_fmtq(cp),-1);

sfprintf(file,"[%s]\n", sh_fmtq(nv_refsub(np)));

}

else

#if SHOPT_TYPEDEF

sfputr(file,nv_isvtree(np)?cp:sh_fmtq(cp),'\n');

#else

sfputr(file,sh_fmtq(cp),'\n');

#endif /* SHOPT_TYPEDEF */

}

return(1);

}

else if(tp->scanmask && tp->scanroot==tp->sh->var_tree)

sfputr(file,nv_name(np),'\n');

return(0);

}

static void print_all(Sfio_t *file,Dt_t *root, struct tdata *tp)

{

tp->outfile = file;

nv_scan(root, print_attribute, (void*)tp, 0, 0);

}

static void print_attribute(register Namval_t *np,void *data)

{

register struct tdata *dp = (struct tdata*)data;

nv_attribute(np,dp->outfile,dp->prefix,dp->aflag);

}

static void print_scan(Sfio_t *file, int flag, Dt_t *root, int option,struct tdata *tp)

{

register char **argv;

register Namval_t *np;

register int namec;

Namval_t *onp = 0;

tp->sh->last_table=0;

flag &= ~NV_ASSIGN;

tp->scanmask = flag&~NV_NOSCOPE;

tp->scanroot = root;

tp->outfile = file;

#if SHOPT_TYPEDEF

if(!tp->prefix && tp->tp)

tp->prefix = nv_name(tp->tp);

#endif /* SHOPT_TYPEDEF */

if(flag&NV_INTEGER)

tp->scanmask |= (NV_DOUBLE|NV_EXPNOTE);

namec = nv_scan(root,nullscan,(void*)tp,tp->scanmask,flag);

argv = tp->argnam = (char**)stkalloc(tp->sh->stk,(namec+1)*sizeof(char*));

namec = nv_scan(root, pushname, (void*)tp, tp->scanmask, flag&~NV_IARRAY);

if(mbcoll())

strsort(argv,namec,strcoll);

while(namec--)

{

if((np=nv_search(*argv++,root,0)) && np!=onp && (!nv_isnull(np) || np->nvfun || nv_isattr(np,~NV_NOFREE)))

{

onp = np;

if(flag&NV_ARRAY)

{

if(nv_aindex(np)>=0)

{

if(!(flag&NV_IARRAY))

continue;

}

else if((flag&NV_IARRAY))

continue;

}

print_namval(file,np,option,tp);

}

}

}

static void pushname(Namval_t *np,void *data)

{

struct tdata *tp = (struct tdata*)data;

*tp->argnam++ = nv_name(np);

}