page@swan.ulowell.edu (Bob Page) (03/16/89)
Submitted-by: PERUGIA@ICNUCEVM.BITNET (Cesare Dieni)
Posting-number: Volume 89, Issue 59
Archive-name: unix/shell302a.2
# This is a shell archive.
# Remove everything above and including the cut line.
# Then run the rest of the file through sh.
#----cut here-----cut here-----cut here-----cut here----#
#!/bin/sh
# shar: Shell Archiver
# Run the following text with /bin/sh to create:
# comm1.c
# comm2.c
# execom.c
# This archive created: Wed Mar 15 14:15:18 1989
cat << \SHAR_EOF > comm1.c
/*
* COMM1.C
*
* Matthew Dillon, August 1986
*
* Version 2.07M by Steve Drew 10-Sep-87
*
* Version 3.02A by Carlo Borreo & Cesare Dieni 20-Dec-88
*
*/
extern char *v_passed, *v_gotofwd, *v_cwd, *v_lasterr;
#define DIR_SHORT 0x01
#define DIR_FILES 0x02
#define DIR_DIRS 0x04
extern int has_wild;
char cwd[256];
/*
Parse the options specified in sw[]
Setting a bit in global variable options
for each one found
*/
get_opt(sw,count)
char *sw;
int *count;
{
register char *c,*s;
unsigned int l,i = 0;
options=0;
while((++i < ac) && (av[i][0] == '-')) {
for (c = av[i]+1; *c ; c++) {
for(l = 0,s = sw;*s && *s != *c; ++s) ++l;
if (*s) options |= (1 << l);
}
}
*count = i;
}
do_sleep()
{
int i;
if (ac == 2) {
i = atoi(av[1]);
while (i > 0) { Delay (100L); i -= 2; if (CHECKBREAK()) break; }
}
return 0;
}
do_protect()
{
register long mask=0xf;
register char *s, *p, *flags="DEWRAPSH";
register unsigned int i;
for (s=av[--ac]; *s; s++)
if (p=index(flags,Toupper(*s))) mask^=(1 << (p-flags));
else ierror(av[ac],500);
for (i=1; i<ac; i++) if (!SetProtection(av[i],mask)) pError(av[i]);
return 0;
}
do_filenote()
{
char *note=av[--ac];
register unsigned int i;
for (i=1; i<ac; i++) if (!SetComment(av[i], note)) pError(av[i]);
return 0;
}
do_cat()
{
FILE *fopen(), *fi;
register unsigned int lctr;
unsigned int i;
char buf[256];
get_opt("n",&i);
if (i>=ac) {
if (has_wild) { printf("No files matching\n"); return 20; }
while (gets(buf) && !dobreak()) {
if (options) printf("%4d ",++lctr);
puts(buf);
}
}
for (; i<ac; i++)
if (fi = fopen (av[i], "r")) {
lctr=0;
while (fgets(buf,256,fi) && !dobreak()) {
if (options) printf("%4d ",++lctr);
printf("%s",buf);
}
fclose (fi);
}
else pError(av[i]);
return 0;
}
do_info()
{
BPTR lock;
struct InfoData *info;
unsigned int size, free;
char *p,*s,*state;
struct DirectoryEntry *de_head=NULL, *de;
info=(struct InfoData *)AllocMem((long)sizeof(struct InfoData),MEMF_PUBLIC);
AddDADevs(&de_head, DLF_DEVICES | DLF_DISKONLY );
Myprocess->pr_WindowPtr = (APTR)(-1);
printf ("Unit Size Bytes Used Blk/By-Free Full Errs Status Name\n");
for (de=de_head; de; de=de->de_Next) {
printf("%-5s",de->de_Name);
if (lock=Lock(de->de_Name,ACCESS_READ)) {
if (Info(lock, info)) {
s = get_pwd(lock);
if (p=index(s,':')) *p = '\0';
size = ((info->id_NumBlocks + 2)* info->id_BytesPerBlock)/ 1024;
free = (((info->id_NumBlocks-info->id_NumBlocksUsed))*
info->id_BytesPerBlock)/ 1024;
switch(info->id_DiskState) {
case ID_WRITE_PROTECTED: state="Read Only "; break;
case ID_VALIDATED: state="Read/Write"; break;
case ID_VALIDATING: state="Validating"; break;
}
printf("%4d%c%6ld%7ld%7ld%4d%c%4ld%%%4ld %s %s\n",
(size>1024) ? ((size+512) >> 10) : size,
(size>1024) ? 'M' : 'K',
info->id_BytesPerBlock,
info->id_NumBlocksUsed,
info->id_NumBlocks-info->id_NumBlocksUsed,
(free>1024) ? ((free+512) >> 10) : free,
(free>1024) ? 'M' : 'K',
(info->id_NumBlocksUsed * 100)/info->id_NumBlocks,
info->id_NumSoftErrors,
state,
s);
}
else pError (de->de_Name);
UnLock(lock);
}
else puts(" No disk present");
}
FreeDAList(&de_head);
Myprocess->pr_WindowPtr = NULL;
FreeMem(info,(long)sizeof(struct InfoData));
return 0;
}
/* things shared with display_file */
char lspec[128];
int filecount, col;
long bytes, blocks;
/*
* the args passed to do_dir will never be expanded
*/
do_dir()
{
void display_file();
int i;
col = filecount = 0;
bytes = blocks = 0L;
*lspec = '\0';
get_opt("sfd",&i);
if (ac == i) {
++ac;
av[i] = "";
}
if (!(options & (DIR_FILES | DIR_DIRS))) options|=(DIR_FILES | DIR_DIRS);
for (; i < ac; ++i) {
char **eav;
int c,eac;
if (!(eav = expand(av[i], &eac)))
continue;
QuickSort(eav, eac);
for(c=0;c < eac && !breakcheck();++c) display_file(options,eav[c]);
free_expand (eav);
if (CHECKBREAK()) break;
}
if (col) printf("\n");
if (filecount > 1) {
blocks += filecount; /* account for dir blocks */
printf (" %ld Blocks, %ld Bytes used in %d files\n", blocks, bytes, filecount);
}
return 0;
}
void
display_file(options,filestr)
int options;
char *filestr;
{
long atol();
int isadir,slen;
char sc;
char *c,*s,*fi;
BPTR lock;
/* if current dir different from lspec then
look for ':' or '/' if found lock it and get_pwd.
else then use cwd.
*/
for(s = c = filestr; *c; ++c) if (*c == ':' || *c == '/') s = c;
if (*s == ':') ++s;
sc = *s;
*s = '\0';
c = filestr;
if (!*c) c = cwd;
if (strcmp (c, &lspec)) {
strcpy(lspec, c);
if (col) printf("\n");
if (lock=Lock(c,SHARED_LOCK)) {
printf("Directory of %s\n", get_pwd(lock));
UnLock(lock);
}
col = 0;
}
*s = sc;
if (sc == '/') s++;
slen = strlen(s);
fi = s + slen + 1;
isadir = (fi[12] =='D');
if (!(((options & DIR_FILES) && !isadir) ||
((options & DIR_DIRS) && isadir)))
return;
if (isadir) printf ("\23333m");
if (options & DIR_SHORT) {
if (col==3 && slen>18) { printf("\n"); col = 0; }
if (slen>18) { printf(" %-37s",s); col+= 2; }
else { printf(" %-18s",s); col++; }
if (col > 3) { printf("\n"); col=0; }
}
else printf(" %-24s %s",s ,fi);
if (isadir) printf("\2330m");
fflush(stdout);
fi[16] = fi[21] = '\0';
bytes += atol(fi+10);
blocks += atol(fi+17);
filecount++;
return;
}
do_quit()
{
if (Src_stack) {
Quit = 1;
return(do_return());
}
main_exit(0);
}
do_echo(str)
register char *str;
{
char nl=1;
for (; *str && *str != ' '; ++str);
if (*str==' ') ++str;
if (av[1] && !strcmp(av[1],"-n")) {
nl = 0;
str += 2;
if (*str==' ') ++str;
}
printf("%s",str);
if (nl) printf("\n");
fflush(stdout);
return 0;
}
/* gets a line from file, joining two lines if the first ends in '\' */
char *myfgets(buf, buflen, file)
char *buf;
FILE *file;
{
char *bufptr=buf;
int remain=buflen, n, flag;
do {
if (fgets(bufptr, remain, file)==NULL) {
if (remain != buflen)
fprintf(stderr,"Source: file ends in '\\'\n");
return NULL;
}
n=strlen(buf);
bufptr += n;
if (flag= (*(bufptr-2)=='\\')) bufptr-=2;
remain -= (n+2);
} while (flag);
return buf;
}
do_source(str)
char *str;
{
register FILE *fi;
char buf[256];
if (Src_stack == MAXSRC) {
ierror(NULL,217);
return -1;
}
if ((fi = fopen (av[1], "r")) == 0) { pError(av[1]); return -1; }
set_var(LEVEL_SET, v_passed, next_word(next_word(str)));
++H_stack;
Src_pos[Src_stack] = 0;
Src_base[Src_stack] = (long)fi;
++Src_stack;
while (myfgets (buf, 256, fi) && !dobreak()) {
int len = strlen(buf);
buf[len-1] = '\0';
Src_pos[Src_stack - 1] += len;
if (Verbose && !forward_goto) fprintf(stderr,"%s\n",buf);
exec_command (buf);
}
--H_stack;
--Src_stack;
if (forward_goto) ierror(NULL,501);
forward_goto = 0;
unset_level(LEVEL_LABEL + Src_stack);
unset_var(LEVEL_SET, v_gotofwd);
unset_var(LEVEL_SET, v_passed);
fclose (fi);
return 0;
}
/*
* return ptr to string that contains full cwd spec.
*/
char *get_pwd(flock)
BPTR flock;
{
static char pwdstr[130];
PathName(flock, pwdstr, 128L);
return pwdstr;
}
/*
* set process cwd name and $_cwd, if str != NULL also print it.
*/
do_pwd(str)
char *str;
{
char *ptr;
if (Myprocess->pr_CurrentDir == 0)
attempt_cd(":"); /* if we just booted 0 = root lock */
strcpy(cwd,get_pwd(Myprocess->pr_CurrentDir,1));
if (str) puts(cwd);
set_var(LEVEL_SET, v_cwd, cwd);
/* put the current dir name in our CLI task structure */
CtoBStr(cwd, Mycli->cli_SetName, 128L);
}
/*
* CD
*
* CD(str, 0) -do CD operation.
*
* standard operation: breakup path by '/'s and process independantly
* x: -reset cwd base
* .. -remove last cwd element
* N -add N or /N to cwd
*/
do_cd(str)
char *str;
{
char sc, *ptr;
int err=0;
str = next_word(str);
if (*str == '\0') {
puts(cwd);
return(0);
}
str[strlen(str)+1] = '\0'; /* add second \0 on end */
while (*str) {
for (ptr = str; *ptr && *ptr != '/' && *ptr != ':'; ++ptr);
switch (*ptr) {
case ':':
sc = ptr[1];
ptr[1] = '\0';
err = attempt_cd(str);
ptr[1] = sc;
break;
case '\0':
case '/':
*ptr = '\0';
if (strcmp(str, "..") == 0 || str == ptr)
str = "/";
if (*str) err = attempt_cd(str);
break;
}
if (err) break;
str = ptr + 1;
}
do_pwd(NULL); /* set $_cwd */
return err;
}
attempt_cd(str)
char *str;
{
BPTR oldlock, filelock;
if (filelock=Lock(str, ACCESS_READ)) {
if (isdir(str)) {
if (oldlock=CurrentDir(filelock)) UnLock(oldlock);
return (0);
}
UnLock(filelock);
ierror(str, 212);
}
else ierror(str, 205);
return -1;
}
do_mkdir()
{
register unsigned int i;
BPTR lock;
for (i=1; i<ac; ++i) {
if (exists(av[i])) ierror(av[i],203);
else if (lock=CreateDir(av[i])) UnLock (lock);
else pError(av[i]);
}
return 0;
}
do_mv()
{
char *dest, buf[256];
int dirflag;
register unsigned int i;
dirflag=isdir(dest=av[--ac]);
if (ac>3 && !dirflag) { ierror(dest, 507); return (-1); }
for (i=1; i<ac; ++i) {
strcpy(buf, dest);
if (dirflag) TackOn(buf, BaseName(av[i]));
if (Rename(av[i], buf)==0)
{ pError(av[i]); return -1; }
}
return 0;
}
int dirstoo;
all_args(args, action, dirsflag)
char *args;
int (*action)();
{
unsigned int i;
get_opt(args, &i);
dirstoo=dirsflag;
for (; i<ac && !dobreak(); ++i)
if (isdir(av[i])) {
if (options & 1) recurse(av[i], action);
else if (dirstoo) (*action)(av[i]);
}
else (*action)(av[i]);
return 0;
}
char *searchstring;
search_file(s)
char *s;
{
FILE *fopen(), *fi;
unsigned int lctr, len=strlen(searchstring);
int yesno;
char buf[256], lowbuf[256], first;
register char *p, *l, *t;
if (!(options & 2)) for (t=searchstring; *t=Toupper(*t); t++);
first=*searchstring;
if ((fi=fopen(s, "r"))==NULL) { pError(s); return; }
lctr=0;
if (!(options & 32)) printf("Examining %s...\n",s);
while (fgets(buf,256,fi) && !dobreak()) {
lctr++;
if (options & 4) yesno=compare_ok(searchstring,buf);
else {
yesno=0;
p=buf;
if (!(options & 2)) {
l=lowbuf; /* p is already =buf */
while (*l++=Toupper(*p++)); /* lowbuf=upper(buf) */
p=lowbuf;
}
while (p=index(p,first))
if (!strncmp(p++,searchstring,len)) { yesno=1; break; }
}
if (yesno ^ ((options & 16)!=0) ) {
/* default: print line numbers */
if (!(options & 8)) printf("%4d ",lctr);
printf("%s",buf);
}
}
fclose (fi);
}
do_search()
{
searchstring=av[--ac];
all_args("rcwneq", search_file, 0);
return 0;
}
rm_file(file)
char *file;
{
if (has_wild) printf(" %s...",file);
if (options & 2) SetProtection(file,0L);
if (!DeleteFile(file)) pError (file); else if (has_wild) printf("Deleted\n");
}
do_rm()
{
all_args("rp", rm_file, 1);
return 0;
}
recurse(name, action)
char *name;
int (*action)();
{
register BPTR lock, cwd;
register FIB *fib=(FIB *)AllocMem((long)sizeof(FIB),MEMF_PUBLIC);
char *namecopy=malloc(256);
if (name[0] =='\0') return;
namecopy[0]=0;
if (lock=Lock(name,ACCESS_READ)) {
cwd =CurrentDir(lock);
if (Examine(lock, fib))
while (ExNext(lock, fib) && !CHECKBREAK()) {
if (*namecopy) { (*action)(namecopy); namecopy[0]=0; }
if (fib->fib_DirEntryType>=0) recurse(fib->fib_FileName,action);
else strcpy(namecopy,fib->fib_FileName);
}
if (*namecopy) (*action)(namecopy);
UnLock(CurrentDir(cwd));
if (dirstoo) (*action)(name);
}
else pError(name);
free(namecopy);
FreeMem(fib, (long)sizeof(FIB));
}
do_history()
{
register struct HIST *hist;
int i = H_tail_base;
int len = (av[1]) ? strlen(av[1]) : 0;
for (hist = H_tail; hist && !dobreak(); hist = hist->prev)
if (len == 0 || !strncmp(av[1], hist->line, len))
printf("%3d %s\n", i++, hist->line);
return 0;
}
do_mem()
{
long cfree, ffree;
extern long AvailMem();
Forbid();
cfree = AvailMem (MEMF_CHIP);
ffree = AvailMem (MEMF_FAST);
Permit();
if (ffree) printf ("FAST memory: %ld\nCHIP memory: %ld\n", ffree, cfree);
printf("Total Free: %ld\n", cfree+ffree);
return 0;
}
/* forline i RAM:temp echo line $_linenum: $i */
do_forline()
{
char vname[33], buf[256];
register unsigned short lctr;
FILE *f;
char *cstr;
static char *linenumname="_linenum";
strcpy(vname,av[1]);
f=fopen(av[2],"r");
if (f==NULL) pError(av[2]);
lctr=0;
++H_stack;
cstr = compile_av (av, 3, ac, ' ');
while (fgets(buf,256,f) && !dobreak()) {
buf[strlen(buf)-1]='\0'; /* remove CR */
lctr++;
set_var(LEVEL_SET, vname, buf);
sprintf(buf,"%d",lctr);
set_var(LEVEL_SET, linenumname, buf);
exec_command(cstr);
}
fclose(f);
--H_stack;
free (cstr);
unset_var (LEVEL_SET, vname);
unset_var (LEVEL_SET, linenumname);
return 0;
}
/* fornum i 1 10 echo $i */
do_fornum()
{
char vname[33], buf[16];
int n1, n2;
char *cstr;
register int i;
strcpy(vname,av[1]);
n1=myatoi(av[2],0 ,32767); if (Errno) return 20;
n2=myatoi(av[3],n1, 32767); if (Errno) return 20;
++H_stack;
cstr = compile_av (av, 4, ac, ' ');
for (i=n1; i<=n2 && !CHECKBREAK(); i++) {
sprintf(buf,"%d",i);
set_var (LEVEL_SET, vname, buf);
exec_command(cstr);
}
--H_stack;
free (cstr);
unset_var (LEVEL_SET, vname);
return 0;
}
/*
* foreach var_name ( str str str str... str ) commands
* spacing is important (unfortunately)
*
* ac=0 1 2 3 4 5 6 7
* foreach i ( a b c ) echo $i
* foreach i ( *.c ) "echo -n "file ->";echo $i"
*/
do_foreach()
{
register int cstart, cend;
register char *cstr;
char **fav;
char vname[33];
int i;
get_opt("v",&i);
strcpy(vname, av[i++]);
if (*av[i] == '(') i++;
cstart = i;
while (i<ac && *av[i] != ')') i++;
if (i > ac) { fprintf(stderr,"')' expected\n"); return 20; }
++H_stack;
cend = i;
fav = (char **)malloc(sizeof(char *) * (ac));
cstr = compile_av (av, cend + 1, ac, ' ');
for (i = cstart; i < cend; ++i) fav[i] = av[i];
for (i = cstart; i<cend && !CHECKBREAK(); ++i) {
set_var (LEVEL_SET, vname, fav[i]);
if (options & 1) printf("foreach: %s\n", fav[i]);
exec_command(cstr);
}
--H_stack;
free (fav);
free (cstr);
unset_var (LEVEL_SET, vname);
return 0;
}
do_forever(str)
char *str;
{
int rcode = 0;
char *ptr = next_word(str);
++H_stack;
for (;;) {
if (CHECKBREAK()) { rcode = 20; break; }
if (exec_command (ptr) < 0) {
str = get_var(LEVEL_SET, v_lasterr);
rcode = (str) ? atoi(str) : 20;
break;
}
}
--H_stack;
return rcode;
}
do_exec(str)
char *str;
{
return exec_command(next_word(str));
}
extern struct Window *w;
extern struct IntuitionBase *IntuitionBase;
do_window()
{
long x, y, maxwidth, maxheight, arg[5];
unsigned int i;
struct Screen *screen;
struct Window *window;
get_opt("slfbaq", &i);
if (options & 1)
SizeWindow(w, (long)(w->MinWidth-w->Width), (long)(w->MinHeight-w->Height));
if (options & 2) {
x=-w->LeftEdge;
y=-w->TopEdge;
MoveWindow(w,x,y);
x=IntuitionBase->ActiveScreen->Width -w->Width;
y=IntuitionBase->ActiveScreen->Height-w->Height;
SizeWindow(w,x,y);
}
if (options & 4) WindowToFront(w);
if (options & 8) WindowToBack(w);
if (options & 16) ActivateWindow(w);
if(ac >= 5) {
for(i=1; i<5; i++) {
arg[i] = myatoi(av[i],0,1023);
if (Errno) return 20;
}
maxwidth = w->WScreen->Width;
maxheight= w->WScreen->Height;
if (arg[3] > maxwidth - arg[1] || arg[4] > maxheight- arg[2]) {
ierror(NULL, 500);
return 20;
}
x = -w->LeftEdge;
y = -w->TopEdge;
MoveWindow(w, x, y);
x = arg[3] - w->Width;
y = arg[4] - w->Height;
SizeWindow(w, x, y);
x = arg[1];
y = arg[2];
MoveWindow(w, x, y);
}
if(options & 32) {
for (screen=IntuitionBase->FirstScreen; screen; screen=screen->NextScreen) {
printf("\nScreen \"%s\" (%d,%d,%dx%d):\n",
screen->Title,
screen->LeftEdge,
screen->TopEdge,
screen->Width,
screen->Height
);
for (window=screen->FirstWindow; window; window=window->NextWindow) {
printf("\tWindow\t\"%s\" (%d,%d,%dx%d)\n",
window->Title,
window->LeftEdge,
window->TopEdge,
window->Width,
window->Height
);
}
}
return 0;
}
Delay(25L); /* pause 1/2 sec. before trying to print */
printf("\014");
return 0;
}
setsystemtime(ds)
struct DateStamp *ds;
{
struct timerequest tr;
long secs= ds->ds_Days*86400 + ds->ds_Minute*60 + ds->ds_Tick/TICKS_PER_SECOND;
if (OpenDevice(TIMERNAME, UNIT_VBLANK, &tr, 0L)) {
fprintf(stderr,"Clock error: can't open timer device\n");
return;
}
tr.tr_node.io_Message.mn_Node.ln_Type = NT_MESSAGE;
tr.tr_node.io_Message.mn_Node.ln_Pri = 0L;
tr.tr_node.io_Message.mn_Node.ln_Name = NULL;
tr.tr_node.io_Message.mn_ReplyPort = NULL;
tr.tr_node.io_Command = TR_SETSYSTIME;
tr.tr_time.tv_secs = secs;
tr.tr_time.tv_micro = 0L;
if (DoIO (&tr)) fprintf(stderr,"Clock error: can't talk to timer device\n");
CloseDevice (&tr);
}
char tday[10];
char *dates(dss)
struct DateStamp *dss;
{
static char timestr[40];
char tdate[10], ttime[10];
struct DateTime dt;
struct DateStamp *myds=&(dt.dat_Stamp);
dt.dat_Format=FORMAT_DOS;
dt.dat_StrDay=tday;
dt.dat_StrDate=tdate;
dt.dat_StrTime=ttime;
dt.dat_Flags=NULL;
myds->ds_Days=dss->ds_Days;
myds->ds_Minute=dss->ds_Minute;
myds->ds_Tick=dss->ds_Tick;
StamptoStr(&dt);
sprintf(timestr,"%s %s\n",tdate,ttime);
timestr[18]='\n';
timestr[19]='\0'; /* protection against bad timestamped files */
return timestr;
}
date()
{
struct DateStamp dss;
register unsigned short i;
struct DateTime dt;
dt.dat_Format=FORMAT_DOS;
if (ac==1) {
DateStamp(&dss);
printf("%s %s",tday,dates(&dss));
}
else {
DateStamp(& (dt.dat_Stamp));
for (i=1; i<ac; i++) {
dt.dat_StrDate=NULL;
dt.dat_StrTime=NULL;
dt.dat_Flags=DTF_FUTURE;
if (index(av[i],':')) dt.dat_StrTime=av[i];
else dt.dat_StrDate=av[i];
if (StrtoStamp(&dt)) ierror(av[i],500);
}
setsystemtime( & (dt.dat_Stamp) );
}
return 0;
}
SHAR_EOF
cat << \SHAR_EOF > comm2.c
/*
* COMM2.C
*
* (c)1986 Matthew Dillon 9 October 1986
*
* Version 2.07M by Steve Drew 10-Sep-87
*
* Version 3.02A by Carlo Borreo & Cesare Dieni 20-Dec-88
*
*/
extern char *v_gotofwd;
/* Casting conveniences */
#define BPTR_TO_C(strtag, var) ((struct strtag *)(BADDR( (ULONG) var)))
#define PROC(task) ((struct Process *)task)
#define CLI(proc) (BPTR_TO_C(CommandLineInterface, proc->pr_CLI))
/* Externs */
extern int has_wild; /* flag set if any arg has a ? or * */
/* globals */
int cp_update;
int cp_date;
do_abortline()
{
Exec_abortline = 1;
return 0;
}
do_return()
{
register int retcode=(ac<2 ? 0 : atoi(av[1]));
Exec_abortline = 1;
if (Src_stack) {
FILE *ptr = (FILE *)Src_base[Src_stack - 1];
ptr->_bp = ptr->_bend;
ptr->_flags |= _EOF;
/* fseek (Src_base[Src_stack - 1], 0L, 2); */
return retcode;
} else main_exit(retcode);
}
/*
* STRHEAD
*
* place a string into a variable removing everything after and including
* the 'break' character
*
* strhead varname breakchar string
*
*/
do_strhead()
{
char *s;
if (s=index(av[3],*av[2])) *s='\0';
set_var (LEVEL_SET, av[1], av[3]);
return 0;
}
do_strtail()
{
char *s;
if (s=index(av[3],*av[2])) s++; else s=av[3];
set_var (LEVEL_SET, av[1], s);
return 0;
}
long dptrtosecs(d)
struct DPTR *d;
{
register struct DateStamp *ds=(&d->fib->fib_Date);
return ds->ds_Days*86400 + ds->ds_Minute*60 + ds->ds_Tick/TICKS_PER_SECOND;
}
long timeof(s)
char *s;
{
struct DPTR *d;
int dummy;
long n;
if ( (d=dopen(s,&dummy))==NULL ) return 0L;
n=dptrtosecs(d);
dclose(d);
return n;
}
/*
* if -f file (exists) or:
*
* if A < B <, >, =, <=, >=, <>, where A and B are either:
* nothing
* a string
* a value (begins w/ number)
*/
do_if(garbage, com)
char *garbage;
{
int result;
int i;
switch (com) {
case 0:
if (If_stack && If_base[If_stack - 1]) If_base[If_stack++] = 1;
else {
get_opt("rftmdn",&i);
result=evalif(i);
If_base[If_stack++]=(options & 32 ? result : !result);
}
break;
case 1:
if (If_stack > 1 && If_base[If_stack - 2]) break;
if (If_stack) If_base[If_stack - 1] ^= 1;
break;
case 2:
if (If_stack) --If_stack;
break;
}
disable = (If_stack) ? If_base[If_stack - 1] : 0;
if (If_stack >= MAXIF) {
fprintf(stderr,"If's too deep\n");
disable = If_stack = 0;
return -1;
}
if (forward_goto) disable = If_base[If_stack - 1] = 0;
return 0;
}
evalif(i)
register unsigned int i;
{
char c;
long num, t0;
long AvailMem();
switch(options & ~32) {
case 0:
if (ac-i != 3) return (ac>i && *av[i]);
Errno=0;
num=Atol(av[i])-Atol(av[i+2]);
if (Errno) num=strcmp(av[i],av[i+2]);
if (num < 0) c='<';
else if (num > 0) c='>';
else if (num == 0) c='=';
return index(av[i+1], c) != NULL;
case 1:
return do_rpn(NULL,i);
case 2:
return exists(av[i]);
case 4:
t0=timeof(av[i++]);
for ( ; i<ac ; i++)
if (t0<=timeof(av[i])) return 1;
return 0;
case 8:
return (AvailMem( (long)MEMF_FAST )!=0);
case 16:
return (isdir(av[i])!=0);
default:
ierror(NULL,500);
return 0;
}
}
do_label()
{
char aseek[32];
if (Src_stack == 0) {
ierror (NULL, 502);
return (-1);
}
sprintf (aseek, "%ld %d", Src_pos[Src_stack-1], If_stack);
set_var (LEVEL_LABEL + Src_stack - 1, av[1], aseek);
if (!strcmp(av[1],get_var(LEVEL_SET,v_gotofwd)))
forward_goto = 0;
return 0;
}
do_goto()
{
int new;
long pos;
char *lab;
if (Src_stack == 0) {
ierror (NULL, 502);
} else {
lab = get_var (LEVEL_LABEL + Src_stack - 1, av[1]);
if (lab == NULL) {
forward_goto = 1;
set_var (LEVEL_SET, v_gotofwd, av[1]);
return(0);
} else {
pos = atoi(lab);
fseek (Src_base[Src_stack - 1], pos, 0);
Src_pos[Src_stack - 1] = pos;
new = atoi(next_word(lab));
for (; If_stack < new; ++If_stack)
If_base[If_stack] = 0;
If_stack = new;
}
}
Exec_abortline = 1;
return (0); /* Don't execute rest of this line */
}
do_inc(garbage, com)
char *garbage;
{
char *var, num[32];
if (ac>2) com *= atoi(av[2]);
if (var = get_var (LEVEL_SET, av[1])) {
sprintf (num, "%d", atoi(var)+com);
set_var (LEVEL_SET, av[1], num);
}
return 0;
}
do_input()
{
char in[256], *p,*s;
unsigned int i;
for (i=1; i < ac; ++i)
if (gets(in)) {
for(p = in; *p; p = s) {
s = next_word(p);
if (*s) *(s-1) = 0xA0;
}
set_var (LEVEL_SET, av[i], in);
}
return 0;
}
do_ver()
{
puts("Shell V3.02A\n\
(c)1986 Matthew Dillon\n\
Manx (M) versions by Steve Drew\n\
ARP (A) versions by Carlo Borreo & Cesare Dieni\n");
return 0;
}
do_ps()
{
/* this code fragment based on ps.c command by Dewi Williams */
register int count; /* loop variable */
struct Task *task; /* EXEC descriptor */
char strbuf[64+1]; /* scratch for btocstr() */
char cmd[40+1]; /* holds cmd name */
long ncli;
printf("Proc Command Name CLI Type Pri. Address Directory\n");
Forbid();
ncli=(long)FindCLI(0L);
for (count = 1; count <= ncli ; count++)
/* or just assume 20?*/
if (task = (struct Task *)FindCLI((long)count)) {
if (task==NULL) continue;
/* Sanity check just in case */
if (PROC(task)->pr_TaskNum == 0 || PROC(task)->pr_CLI == 0) continue;
/* or complain? */
BtoCStr(cmd, CLI(PROC(task))->cli_CommandName, 40L);
BtoCStr(strbuf,CLI(PROC(task))->cli_SetName , 64L);
printf("%2d %-20.20s %-11.11s %3d %8lx %s\n",
count,
cmd,
task->tc_Node.ln_Name,
task->tc_Node.ln_Pri,
task,
strbuf);
}
Permit();
return 0;
}
/*
* CP [-d] [-u] file file
* CP [-d] [-u] file file file... destdir
* CP [-r][-u][-d] dir dir dir... destdir
*/
char *errstr; /* let's be alittle more informative */
do_copy()
{
register int recur, ierr;
register char *destname;
register char destisdir;
register FIB *fib;
int i;
errstr = "";
ierr = 0;
fib = (FIB *)AllocMem((long)sizeof(FIB), MEMF_PUBLIC);
get_opt("rud",&i);
recur = (options & 0x01);
cp_update = (options & 0x02);
cp_date = (!(options & 0x04)); /* the default is keep orignal file date */
destname = av[ac - 1];
if (ac < i + 2) {
ierr = 500;
goto done;
}
destisdir = isdir(destname);
if (ac > i + 2 && !destisdir) {
ierr = 507;
goto done;
}
/*
* copy set: reduce to:
* file to file file to file
* dir to file (NOT ALLOWED)
* file to dir dir to dir
* dir to dir dir to dir
*
*/
for (; i<ac-1 && !dobreak(); ++i) {
short srcisdir = isdir(av[i]);
if (srcisdir && has_wild && (ac >2)) /* hack to stop dir's from */
continue; /* getting copied if specified */
/* from wild expansion */
if (srcisdir) {
BPTR srcdir, destdir;
if (!destisdir) {
if (exists(destname)) {
ierr = 507; /* disallow dir to file */
goto done;
}
if (destdir = CreateDir(destname)) UnLock(destdir);
destisdir = 1;
}
if (!(destdir = Lock(destname, ACCESS_READ))) {
ierr = 205;
errstr = destname;
goto done;
}
if (!(srcdir = Lock(av[i], ACCESS_READ))) {
ierr = 205;
errstr = av[i];
UnLock(destdir);
goto done;
}
ierr = copydir(srcdir, destdir, recur);
UnLock(srcdir);
UnLock(destdir);
if (ierr) break;
}
else { /* FILE to DIR, FILE to FILE */
BPTR destdir, srcdir, tmp;
char *destfilename;
srcdir = (BPTR)(Myprocess->pr_CurrentDir);
if ((tmp = Lock(av[i], ACCESS_READ)) == NULL || !Examine(tmp,fib)) {
if (tmp) UnLock(tmp);
ierr = 205;
errstr = av[i];
goto done;
}
UnLock(tmp);
if (destisdir) {
destdir = Lock(destname, ACCESS_READ);
destfilename = fib->fib_FileName;
}
else {
destdir = srcdir;
destfilename = destname;
}
printf(" %s..",av[i]);
fflush(stdout);
ierr = copyfile(av[i], srcdir, destfilename, destdir);
if (destisdir) UnLock(destdir);
if (ierr) break;
}
}
done:
FreeMem(fib, (long)sizeof(FIB));
if (ierr) {
ierror(errstr, ierr);
return(20);
}
return 0;
}
copydir(srcdir, destdir, recur)
register BPTR srcdir, destdir;
{
BPTR cwd;
register FIB *srcfib;
register BPTR destlock, srclock;
int ierr;
static int level;
level++;
ierr = 0;
srcfib = (FIB *)AllocMem((long)sizeof(FIB), MEMF_PUBLIC);
if (Examine(srcdir, srcfib)) {
while (ExNext(srcdir, srcfib)) {
if (CHECKBREAK())
break;
if (srcfib->fib_DirEntryType < 0) {
printf("%*s%s..",(level-1) * 6," ",srcfib->fib_FileName);
fflush(stdout);
ierr = copyfile(srcfib->fib_FileName,srcdir,srcfib->fib_FileName,destdir);
if (ierr)
break;
} else {
if (recur) {
cwd = CurrentDir(srcdir);
if (srclock = Lock(srcfib->fib_FileName, ACCESS_READ)) {
CurrentDir(destdir);
if (!(destlock = Lock(srcfib->fib_FileName))) {
destlock = CreateDir(srcfib->fib_FileName);
printf("%*s%s (Dir)....[Created]\n",(level-1) * 6,
" ",srcfib->fib_FileName);
/* UnLock and re Lock if newly created
for file_date() to work properly
*/
if (destlock) UnLock(destlock);
destlock = Lock(srcfib->fib_FileName);
}
else
printf("%*s%s (Dir)\n",(level-1) * 6," ",srcfib->fib_FileName);
if (destlock) {
ierr = copydir(srclock, destlock, recur);
UnLock(destlock);
} else {
ierr = (int)((long)IoErr());
}
UnLock(srclock);
} else {
ierr = (int)((long)IoErr());
}
CurrentDir(cwd);
if (ierr)
break;
}
}
}
} else {
ierr = (int)((long)IoErr());
}
--level;
FreeMem(srcfib, (long)sizeof(FIB));
return(ierr);
}
copyfile(srcname, srcdir, destname, destdir)
char *srcname, *destname;
BPTR srcdir, destdir;
{
BPTR cwd;
BPTR f1, f2;
long i;
int stat,ierr;
char *buf;
struct DPTR *dp, *dps = NULL;
if ((buf = (char *)AllocMem(8192L, MEMF_PUBLIC|MEMF_CLEAR))==NULL)
{ ierr = 103; goto fail; }
ierr = 0;
cwd = CurrentDir(srcdir);
if ((f1=Open(srcname, MODE_OLDFILE))==NULL)
{ errstr = srcname; ierr = 205; goto fail; }
dps = dopen(srcname,&stat);
CurrentDir(destdir);
if (cp_update)
{
dp=dopen(destname, &stat);
if ( dptrtosecs(dp) >= dptrtosecs(dps) &&
!strcmp(dps->fib->fib_FileName, dp->fib->fib_FileName))
{ dclose(dp); Close(f1); printf("..not newer\n"); goto fail; }
dclose(dp);
}
if ((f2=Open(destname, MODE_NEWFILE))==NULL)
{ Close(f1); ierr = (int)((long)IoErr()); errstr=destname; goto fail; }
while (i = Read(f1, buf, 8192L))
if (Write(f2, buf, i) != i) { ierr = (int)((long)IoErr()); break; }
Close(f2);
Close(f1);
if (!ierr)
{
if (cp_date) file_date(&dps->fib->fib_Date, destname);
printf("..copied\n");
}
else DeleteFile(destname);
fail:
dclose(dps);
if (buf) FreeMem(buf, 8192L);
CurrentDir(cwd);
return(ierr);
}
do_touch()
{
struct DateStamp ds;
register unsigned int i;
DateStamp(&ds);
for (i=1; i<ac; i++) if (file_date(&ds, av[i])) ierror(av[i],500);
return 0;
}
file_date(date,name)
struct DateStamp *date;
char *name;
{
long packargs[7];
UBYTE *ptr;
struct MsgPort *task;
BPTR dirlock;
struct DPTR *tmp;
int stat;
if (!(task = (struct MsgPort *)DeviceProc(name))) return(1);
if (tmp = dopen(name, &stat)) {
dirlock = ParentDir(tmp->lock);
ptr=AllocMem(65L,MEMF_PUBLIC);
CtoBStr(tmp->fib->fib_FileName,(ULONG)ptr >> 2L,64L);
dclose(tmp);
packargs[1]=dirlock;
packargs[2]=(ULONG)ptr >> 2L;
packargs[3]=(long)date;
SendPacket(ACTION_SET_DATE,packargs,task);
UnLock(dirlock);
FreeMem(ptr,65L);
}
return 0;
}
do_addbuffers()
{
long packargs[7];
long n;
struct MsgPort *task=(struct MsgPort *)DeviceProc(av[1]);
if (!task) { ierror(av[1],510); return 20; }
n=myatoi(av[2],1,32767); if (Errno) return 20;
packargs[0]=n;
SendPacket(ACTION_MORE_CACHE,packargs,task);
return 0;
}
do_relabel()
{
long packargs[7];
UBYTE *ptr;
long n;
struct MsgPort *task=(struct MsgPort *)DeviceProc(av[1]);
if (!task) { ierror(av[1],510); return 20; }
ptr=AllocMem(65L,MEMF_PUBLIC);
CtoBStr(av[2],(ULONG)ptr >> 2L,64L);
packargs[0]=(ULONG)ptr >> 2L;
SendPacket(ACTION_RENAME_DISK,packargs,task);
FreeMem(ptr,65L);
changedisk(task);
return 0;
}
do_diskchange()
{
struct MsgPort *task=(struct MsgPort *)DeviceProc(av[1]);
if (!task) { ierror(av[1],510); return 20; }
changedisk(task);
return 0;
}
changedisk(task)
struct MsgPort *task;
{
long packargs[7];
packargs[0]=1L;
SendPacket(ACTION_INHIBIT,packargs,task);
packargs[0]=0L;
SendPacket(ACTION_INHIBIT,packargs,task);
}
SHAR_EOF
cat << \SHAR_EOF > execom.c
/*
* EXECOM.C
*
* Matthew Dillon, 10 August 1986
* Finally re-written.
*
* Version 2.07M by Steve Drew 10-Sep-87
*
* Version 3.02A by Carlo Borreo & Cesare Dieni 20-Dec-88
*
*/
extern char *v_histnum, *v_except;
#define F_EXACT 0
#define F_ABBR 1
#define ST_COND 0x01
#define ST_NORED 0x02
#define ST_NOEXP 0x04
#define ST_AV 0x08 /* delimit args within a variable */
int has_wild = 0; /* set if any arg has wild card */
struct COMMAND {
int (*func)();
short minargs;
short stat;
int val;
char *name;
};
extern char *format_insert_string();
extern char *mpush(), *exarg();
extern int do_strleft(), do_strright(), do_strmid(), do_strlen();
extern int do_fornum(), do_forline(), do_exec();
extern int do_diskchange(), do_stack(), do_fault(), do_path(), do_pri();
extern int do_rpn(), do_resident(), do_truerun(), do_aset(), do_howmany();
extern int do_open(), do_close(), do_fileslist(), do_htype();
extern int do_run(), do_number(), do_assign(), do_join();
extern int do_quit(), do_set_var(), do_unset_var();
extern int do_echo(), do_source(), do_mv(), do_addbuffers();
extern int do_cd(), do_pwd(), do_rm(), do_mkdir(), do_history();
extern int do_mem(), do_cat(), do_dir(), do_info(), do_inc();
extern int do_foreach(), do_return(), do_if(), do_label(), do_goto();
extern int do_input(), do_ver(), do_sleep(), do_help();
extern int do_strhead(), do_strtail(), do_relabel();
extern int do_copy(), date(), do_protect(), do_ps();
extern int do_forever(), do_abortline(), do_strings(), do_touch();
extern int do_window(), do_search(), do_filenote();
char *push_cpy();
static struct COMMAND Command[] = {
do_run, 0, ST_AV, 0, "\001", /* may call do_source */
do_set_var, 0, 0, LEVEL_ALIAS, "alias", /* uses avline */
do_abortline, 0, 0, 0, "abortline",
do_addbuffers, 2, 0, 0, "addbuffers",
do_aset, 1, 0, 0, "aset",
do_assign, 0, 0, 0, "assign",
do_cat, 0, 0, 0, "cat",
do_cd, 0, 0, 0, "cd",
do_close, 0, 0, 0, "close",
do_copy, 1, 0, 0, "copy",
do_copy, 1, 0, 0, "cp",
date, 0, 0, 0, "date",
do_rm, 0, 0, 0, "delete",
do_dir, 0, ST_NOEXP, 0, "dir",
do_diskchange, 1, 0, 0, "diskchange",
do_inc, 1, 0, -1, "dec",
do_echo, 0, 0, 0, "echo", /* uses avline */
do_if, 0, ST_COND, 1, "else",
do_if, 0, ST_COND, 2, "endif",
do_exec, 1, 0, 0, "exec",
do_fault, 1, 0, 0, "fault",
do_filenote, 2, 0, 0, "filenote",
do_fileslist, 0, 0, 0, "flist",
do_foreach, 3, ST_NORED, 0, "foreach",
do_forever, 1, ST_NORED, 0, "forever",
do_forline, 3, ST_NORED, 0, "forline",
do_fornum, 4, ST_NORED, 0, "fornum",
do_goto, 1, 0, 0, "goto",
do_help, 0, 0, 0, "help",
do_history, 0, 0, 0, "history",
do_howmany, 0, 0, 0, "howmany",
do_htype, 1, 0, 0, "htype",
do_if, 1, ST_COND|ST_NORED,0, "if",
do_inc, 1, 0, 1, "inc",
do_info, 0, 0, 0, "info",
do_join, 2, 0, 1, "join",
do_input, 1, 0, 0, "input",
do_label, 1, ST_COND, 0, "label",
do_dir, 0, ST_NOEXP, 0, "ls",
do_mkdir, 0, 0, 0, "md",
do_mem, 0, 0, 0, "mem",
do_mkdir, 0, 0, 0, "mkdir",
do_mv, 2, 0, 0, "mv",
do_open, 3, 0, 0, "open",
do_path, 0, 0, 0, "path",
do_pri, 2, 0, 0, "pri",
do_protect, 2, 0, 0, "protect",
do_ps, 0, 0, 0, "ps",
do_pwd, 0, 0, 0, "pwd",
do_quit, 0, ST_NORED, 0, "quit",
do_truerun, 1, ST_NORED, 1, "rback",
do_mv, 2, 0, 0, "rename",
do_relabel, 2, 0, 0, "relabel",
do_resident, 0, 0, 0, "resident",
do_return, 0, 0, 0, "return",
do_rm, 0, 0, 0, "rm",
do_rpn, 0, ST_NOEXP|ST_NORED,0, "rpn",
do_truerun, 1, ST_NORED, 0, "run",
do_search, 2, 0, 0, "search",
do_set_var, 0, ST_AV, LEVEL_SET, "set",
do_sleep, 0, 0, 0, "sleep",
do_source, 0, ST_NORED|ST_AV, 0, "source", /* uses avline */
do_stack, 0, 0, 0, "stack",
do_strhead, 3, 0, 0, "strhead",
do_strings, 1, 0, 0, "strings",
do_strleft, 3, 0, 0, "strleft",
do_strlen, 2, 0, 0, "strlen",
do_strmid, 3, 0, 0, "strmid",
do_strright, 3, 0, 0, "strright",
do_strtail, 3, 0, 0, "strtail",
do_touch, 0, 0, 0, "touch",
do_cat, 0, 0, 0, "type",
do_unset_var, 0, 0, LEVEL_ALIAS, "unalias",
do_unset_var, 0, 0, LEVEL_SET , "unset",
do_ver, 0, 0, 0, "version",
do_window, 0, ST_NOEXP, 0, "window",
'\0', 0, 0, 0, NULL
};
static unsigned char elast; /* last end delimeter */
static char Cin_ispipe, Cout_ispipe;
exec_command(base)
char *base;
{
register char *scr;
char buf[32];
if (!H_stack) {
add_history(base);
sprintf(buf, "%d", H_tail_base + H_len);
set_var(LEVEL_SET, v_histnum, buf);
}
scr = malloc((strlen(base) << 2) + 2);
preformat(base, scr);
return (fcomm(scr, 1) ? -1 : 1);
}
isalphanum(c)
register char c;
{
return (
(c >= '0' && c <= '9') ||
(c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') ||
(c == '_')
);
}
preformat(s, d)
register char *s, *d;
{
register int si, di, qm;
si = di = qm = 0;
while (s[si] == ' ' || s[si] == 9) ++si;
while (s[si]) {
if (qm && s[si] != '\"' && s[si] != '\\') {
d[di++] = s[si++] | 0x80;
continue;
}
switch (s[si]) {
case ' ':
case 9:
d[di++] = ' ';
while (s[si] == ' ' || s[si] == 9) ++si;
if (s[si] == 0 || s[si] == '|' || s[si] == ';') --di;
break;
case '*':
case '?':
d[di++] = 0x80;
case '!':
d[di++] = s[si++];
break;
case '#':
d[di++] = '\0';
while (s[si]) ++si;
break;
case ';':
case '|':
d[di++] = s[si++];
while (s[si] == ' ' || s[si] == 9) ++si;
break;
case '\\':
d[di++] = s[++si] | 0x80;
if (s[si]) ++si;
break;
case '\"':
qm = 1 - qm;
++si;
break;
case '^':
d[di++] = s[++si] & 0x1F;
if (s[si]) ++si;
break;
case '$': /* search end of var name and place false space */
d[di++] = 0x80;
d[di++] = s[si++];
while (isalphanum(s[si])) d[di++] = s[si++];
d[di++] = 0x80;
break;
default:
d[di++] = s[si++];
break;
}
}
d[di++]=0;
d[di]=0;
if (debug) fprintf (stderr,"PREFORMAT: %d :%s:\n", strlen(d), d);
}
extern BPTR extOpen();
/*
* process formatted string. ' ' is the delimeter.
*
* 0: check '\0': no more, stop, done.
* 1: check $. if so, extract, format, insert
* 2: check alias. if so, extract, format, insert. goto 1
* 3: check history or substitution, extract, format, insert. goto 1
*
* 4: assume first element now internal or disk based command.
*
* 5: extract each ' ' or 0x80 delimited argument and process, placing
* in av[] list (except 0x80 args appended). check in order:
*
* '$' insert string straight
* '>' setup stdout
* '>>' setup stdout flag for append
* '<' setup stdin
* '*' or '?' do directory search and insert as separate args.
*
* ';' 0 '|' end of command. if '|' setup stdout
* -execute command, fix stdin and out (|) sets
* up stdin for next guy.
*/
fcomm(str, freeok)
register char *str;
{
static int alias_count;
int p_alias_count = 0;
char *istr;
char *nextstr;
char *command;
char *pend_alias = NULL;
char err = 0;
has_wild = 0;
++alias_count;
mpush_base();
if (*str == 0)
goto done1;
step1:
if (alias_count == MAXALIAS || ++p_alias_count == MAXALIAS) {
fprintf(stderr,"Alias Loop\n");
err = 20;
goto done1;
}
/*
if (str[1] == '$') {
if (istr = get_var (LEVEL_SET, str + 2))
str = format_insert_string(str, istr, &freeok);
}
*/
istr = NULL;
if (*(unsigned char *)str < 0x80)
istr = get_var (LEVEL_ALIAS, str); /* only if not \command */
*str &= 0x7F; /* remove \ teltail */
if (istr) {
if (*istr == '%') {
pend_alias = istr;
} else {
str = format_insert_string(str, istr, &freeok);
goto step1;
}
}
if (*str == '!') {
char *p, c; /* fix to allow !cmd1;!cmd2 */
for(p = str; *p && *p != ';' ; ++p);
c = *p;
*p = '\0';
istr = get_history(str);
*p = c;
replace_head(istr);
str = format_insert_string(str, istr, &freeok);
goto step1;
}
nextstr = str;
command = exarg(&nextstr);
if (*command == 0)
goto done0;
if (pend_alias == 0) {
if (cmd_stat(command) & ST_COND)
goto skipgood;
}
if (disable || forward_goto) {
while (elast && elast != ';' && elast != '|')
exarg(&nextstr);
goto done0;
}
skipgood:
{
register char *arg, *ptr, *scr;
short redir;
short doexpand;
short cont;
short inc;
ac = 1;
av[0] = command;
step5: /* ac = nextac */
if (!elast || elast == ';' || elast == '|')
goto stepdone;
av[ac] = '\0';
cont = 1;
doexpand = redir = inc = 0;
while (cont && elast) {
int cstat = cmd_stat(command);
ptr = exarg(&nextstr);
inc = 1;
arg = "";
cont = (elast == 0x80);
switch (*ptr) {
case '<':
redir = -2;
case '>':
if (cstat & (ST_NORED | ST_COND)) {
/* don't extract */
redir = 0; /* <> stuff if its */
arg = ptr; /* external cmd. */
break;
}
++redir;
arg = ptr + 1;
if (*arg == '>') {
redir = 2; /* append >> */
++arg;
}
cont = 1;
break;
case '$':
/* restore args if from set command or pend_alias */
if ((arg = get_var(LEVEL_SET, ptr + 1)) != NULL) {
if (cstat & ST_COND) {
char *tp;
tp = push_cpy(arg);
arg = tp;
}
else {
char *pe, sv, *index();
while (pe = index(arg,0xA0)) {
sv = *pe;
*pe = '\0';
av[ac++] = push_cpy(arg);
*pe = sv;
av[ac] = '\0';
arg = pe+1;
}
}
}
else
arg = ptr;
break;
case '*':
case '?':
if ((cstat & ST_NOEXP) == 0)
doexpand = 1;
arg = ptr;
break;
default:
arg = ptr;
break;
}
/* Append arg to av[ac] */
for (scr = arg; *scr; ++scr)
*scr &= 0x7F;
if (av[ac]) {
register char *old = av[ac];
av[ac] = mpush(strlen(arg)+strlen(av[ac]));
strcpy(av[ac], old);
strcat(av[ac], arg);
} else {
av[ac] = push_cpy(arg);
}
if (elast != 0x80)
break;
}
/* process expansion */
if (doexpand) {
char **eav, **ebase;
int eac;
has_wild = 1;
eav = ebase = expand(av[ac], &eac);
inc = 0;
if (eav) {
if (ac + eac + 2 > MAXAV) {
ierror (NULL, 506);
err = 1;
} else {
QuickSort(eav, eac);
for (; eac; --eac, ++eav)
av[ac++] = push_cpy(*eav);
}
free_expand (ebase);
}
}
/* process redirection */
if (redir && !err) {
register char *file = (doexpand) ? av[--ac] : av[ac];
if (redir < 0)
Cin_name = file;
else {
Cout_name = file;
Cout_append = (redir == 2);
}
inc = 0;
}
/* check elast for space */
if (inc) {
++ac;
if (ac + 2 > MAXAV) {
ierror (NULL, 506);
err = 1; /* error condition */
elast = 0; /* don't process any more arguemnts */
}
}
if (elast == ' ')
goto step5;
}
stepdone:
av[ac] = '\0';
/* process pipes via files */
if (elast == '|' && !err) {
static int which; /* 0 or 1 in case of multiple pipes */
which = 1 - which;
Cout_name = (which) ? Pipe1 : Pipe2;
Cout_ispipe = 1;
}
if (err)
goto done0;
{
register int i;
char save_elast;
char *compile_av();
register char *avline;
unsigned char delim = ' ';
save_elast = elast;
if (pend_alias || (cmd_stat(command) & ST_AV))
delim = 0xA0;
avline = compile_av(av,((pend_alias) ? 1 : 0), ac , delim);
if (pend_alias) { /* special % alias */
register char *ptr, *scr;
for (ptr = pend_alias; *ptr && *ptr != ' '; ++ptr);
set_var (LEVEL_SET, pend_alias + 1, avline);
free (avline);
scr = malloc((strlen(ptr) << 2) + 2);
preformat (ptr, scr);
fcomm (scr, 1);
unset_var (LEVEL_SET, pend_alias + 1);
} else { /* normal command */
register int ccno;
long oldcin = Myprocess->pr_CIS;
long oldcout = Myprocess->pr_COS;
char *Cin_buf;
struct FileHandle *ci;
long oldbuf;
fflush(stdout);
ccno = find_command (command);
if ((Command[ccno].stat & (ST_NORED | ST_COND)) == 0) {
if (Cin_name) {
if ((Cin = (long)extOpen(Cin_name,1005L)) == 0L) {
ierror (NULL, 504);
err = 1;
Cin_name = '\0';
} else {
Myprocess->pr_CIS = _devtab[stdin->_unit].fd = Cin;
ci = (struct FileHandle *)(((long)Cin)<<2);
Cin_buf = (char *)AllocMem(202L, MEMF_PUBLIC);
oldbuf = ci->fh_Buf;
if (ci->fh_Buf == 0) /* fexec expects a CIS buffer */
ci->fh_Buf = (long)Cin_buf>>2;
}
}
if (Cout_name) {
if (Cout_append && (Cout =(long)extOpen(Cout_name, 1005L)) ) {
Seek(Cout, 0L, 1L);
} else {
Cout = (long)extOpen(Cout_name,1006L);
}
if (Cout == NULL) {
err = 1;
ierror (NULL, 504);
Cout_name = '\0';
Cout_append = 0;
} else {
Myprocess->pr_COS = _devtab[stdout->_unit].fd = Cout;
}
}
}
if (ac < Command[ccno].minargs + 1) {
ierror (NULL, 500);
err = -1;
} else if (!err) {
i = (*Command[ccno].func)(avline, Command[ccno].val);
if (i < 0)
i = 20;
err = i;
}
free (avline);
if (E_stack == 0 && Lastresult != err) {
Lastresult = err;
seterr();
}
if ((Command[ccno].stat & (ST_NORED | ST_COND)) == 0) {
if (Cin_name) {
fflush(stdin);
clearerr(stdin);
ci->fh_Buf = oldbuf;
extClose(Cin);
FreeMem(Cin_buf, 202L);
}
if (Cout_name) {
fflush(stdout);
clearerr(stdout);
stdout->_flags &= ~_DIRTY; /* because of nil: device */
extClose(Cout);
Cout_append = 0;
}
}
Myprocess->pr_CIS = _devtab[stdin->_unit].fd = oldcin;
Myprocess->pr_COS = _devtab[stdout->_unit].fd = oldcout;
}
if (Cin_ispipe && Cin_name)
DeleteFile(Cin_name);
if (Cout_ispipe) {
Cin_name = Cout_name; /* ok to assign.. static name */
Cin_ispipe = 1;
} else {
Cin_name = '\0';
}
Cout_name = '\0';
Cout_ispipe = 0;
elast = save_elast;
}
mpop_tobase(); /* free arguments */
mpush_base(); /* push dummy base */
done0:
{
char *str;
if (err && E_stack == 0) {
str = get_var(LEVEL_SET, v_except);
if (err >= ((str)?atoi(str):1)) {
if (str) {
++H_stack;
++E_stack;
exec_command(str);
--E_stack;
--H_stack;
} else {
Exec_abortline = 1;
}
}
}
if (elast != 0 && Exec_abortline == 0)
err = fcomm(nextstr, 0);
Exec_abortline = 0;
if (Cin_name)
DeleteFile(Cin_name);
Cin_name = NULL;
Cin_ispipe = 0;
}
done1:
mpop_tobase();
if (freeok)
free(str);
--alias_count;
return ((int)err); /* TRUE = error occured */
}
char *
exarg(ptr)
unsigned char **ptr;
{
register unsigned char *end;
register unsigned char *start;
start = end = *ptr;
while (*end && *end != 0x80 && *end != ';' && *end != '|' && *end != ' ')
++end;
elast = *end;
*end = '\0';
*ptr = end + 1;
return ((char *)start);
}
static char **Mlist;
mpush_base()
{
char *str;
str = malloc(5);
*(char ***)str = Mlist;
str[4] = 0;
Mlist = (char **)str;
}
char *
mpush(bytes)
{
char *str;
str = malloc(6 + bytes + 2); /* may need extra 2 bytes in do_run() */
*(char ***)str = Mlist;
str[4] = 1;
Mlist = (char **)str;
return (str + 5);
}
mpop_tobase()
{
register char *next;
while (Mlist) {
next = *Mlist;
if (((char *)Mlist)[4] == 0) {
free (Mlist);
Mlist = (char **)next;
break;
}
free (Mlist);
Mlist = (char **)next;
}
}
/*
* Insert 'from' string in front of 'str' while deleting the
* first entry in 'str'. if freeok is set, then 'str' will be
* free'd
*/
char *
format_insert_string(str, from, freeok)
char *str;
char *from;
int *freeok;
{
register char *new1, *new2;
register unsigned char *strskip;
int len;
for (strskip = (unsigned char *)str;
*strskip && *strskip != ' '
&& *strskip != ';' && *strskip != '|'
&& *strskip != 0x80; ++strskip);
len = strlen(from);
new1 = malloc((len << 2) + 2);
preformat(from, new1);
len = strlen(new1) + strlen(strskip);
new2 = malloc(len+2);
strcpy(new2, new1);
strcat(new2, strskip);
new2[len+1] = 0;
free (new1);
if (*freeok)
free (str);
*freeok = 1;
return (new2);
}
cmd_stat(str)
char *str;
{
return(Command[find_command(str)].stat);
}
find_command(str)
char *str;
{
register unsigned int i;
int len = strlen(str);
if (*str >= '0' && *str <= '9')
return (1);
for (i = 0; Command[i].func; ++i) {
if (strncmp (str, Command[i].name, len) == 0)
return (i);
}
return (0);
}
do_help()
{
register struct COMMAND *com;
int i= 0;
for (com = &Command[2]; com->func; ++com) {
printf ("%-12s", com->name);
if (++i % 6 == 0) printf("\n");
}
printf("\n");
return(0);
}
char *push_cpy(s)
char *s;
{
return strcpy(mpush(strlen(s)), s);
}
SHAR_EOF
# End of shell archive
exit 0
--
Bob Page, U of Lowell CS Dept. page@swan.ulowell.edu ulowell!page
Have five nice days.