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- char rcsid[] = "$Header: perly.c,v 3.0.1.10 91/01/11 18:22:48 lwall Locked $\nPatch level: ###\n";
- /*
- * Copyright (c) 1989, Larry Wall
- *
- * You may distribute under the terms of the GNU General Public License
- * as specified in the README file that comes with the perl 3.0 kit.
- *
- * $Log: perly.c,v $
- * Revision 3.0.1.10 91/01/11 18:22:48 lwall
- * patch42: added -0 option
- * patch42: ANSIfied the stat mode checking
- * patch42: executables for multiple versions may now coexist
- *
- * Revision 3.0.1.9 90/11/10 01:53:26 lwall
- * patch38: random cleanup
- * patch38: more msdos/os2 upgrades
- * patch38: references to $0 produced core dumps
- * patch38: added hooks for unexec()
- *
- * Revision 3.0.1.8 90/10/16 10:14:20 lwall
- * patch29: *foo now prints as *package'foo
- * patch29: added waitpid
- * patch29: the debugger now understands packages and evals
- * patch29: added -M, -A and -C
- * patch29: -w sometimes printed spurious warnings about ARGV and ENV
- * patch29: require "./foo" didn't work right
- * patch29: require error messages referred to wrong file
- *
- * Revision 3.0.1.7 90/08/13 22:22:22 lwall
- * patch28: defined(@array) and defined(%array) didn't work right
- *
- * Revision 3.0.1.6 90/08/09 04:55:50 lwall
- * patch19: added -x switch to extract script from input trash
- * patch19: Added -c switch to do compilation only
- * patch19: added numeric interpretation of $]
- * patch19: added require operator
- * patch19: $0, %ENV, @ARGV were wrong in dumped script
- * patch19: . is now explicitly in @INC (and last)
- *
- * Revision 3.0.1.5 90/03/27 16:20:57 lwall
- * patch16: MSDOS support
- * patch16: do FILE inside eval blows up
- *
- * Revision 3.0.1.4 90/02/28 18:06:41 lwall
- * patch9: perl can now start up other interpreters scripts
- * patch9: nested evals clobbered their longjmp environment
- * patch9: eval could mistakenly return undef in array context
- *
- * Revision 3.0.1.3 89/12/21 20:15:41 lwall
- * patch7: ANSI strerror() is now supported
- * patch7: errno may now be a macro with an lvalue
- * patch7: allowed setuid scripts to have a space after #!
- *
- * Revision 3.0.1.2 89/11/17 15:34:42 lwall
- * patch5: fixed possible confusion about current effective gid
- *
- * Revision 3.0.1.1 89/11/11 04:50:04 lwall
- * patch2: moved yydebug to where its type didn't matter
- *
- * Revision 3.0 89/10/18 15:22:21 lwall
- * 3.0 baseline
- *
- */
-
- #include "EXTERN.h"
- #include "perl.h"
- #include "perly.h"
- #include "patchlevel.h"
-
- static char *moreswitches PROTO((char *));
- static char *cddir;
- static bool minus_c;
- static char patchlevel[6];
-
- int
- main(argc,argv)
- register int argc;
- register char **argv;
- {
- register STR *str;
- register char *s;
- char *val;
- bool dosearch = FALSE;
-
- origargv = argv;
- origargc = argc;
- sprintf(patchlevel,"%3.3s%2.2d", rcsid+19, PATCHLEVEL);
-
- (void)sprintf(index(rcsid,'#'), "%d\n", PATCHLEVEL);
- linestr = Str_new(65,80);
- str_nset(linestr,"",0);
- str = str_make("",0); /* first used for -I flags */
- curstash = defstash = hnew(0);
- curstname = str_make("main",4);
- stab_xhash(stabent("_main",TRUE)) = defstash;
- defstash->tbl_name = "main";
- incstab = hadd(aadd(stabent("INC",TRUE)));
- incstab->str_pok |= SP_MULTI;
- for (argc--,argv++; argc > 0; argc--,argv++) {
- if (argv[0][0] != '-' || !argv[0][1])
- break;
- s = argv[0]+1;
- reswitch:
- switch (*s) {
- case '0':
- case 'a':
- case 'c':
- case 'd':
- case 'D':
- case 'i':
- case 'n':
- case 'p':
- case 'u':
- case 'U':
- case 'v':
- case 'w':
- if ((s = moreswitches(s)) != Nullch)
- goto reswitch;
- break;
-
- case 'e':
- #ifdef TAINT
- if (euid != uid || egid != gid)
- fatal("No -e allowed in setuid scripts");
- #endif
- if (!e_fp) {
- e_tmpname = savestr(TMPPATH);
- (void)mktemp(e_tmpname);
- e_fp = fopen(e_tmpname,"w");
- if (!e_fp)
- fatal("Cannot open temporary file");
- }
- if (argv[1]) {
- fputs(argv[1],e_fp);
- argc--,argv++;
- }
- (void)putc('\n', e_fp);
- break;
- case 'I':
- #ifdef TAINT
- if (euid != uid || egid != gid)
- fatal("No -I allowed in setuid scripts");
- #endif
- str_cat(str,"-");
- str_cat(str,s);
- str_cat(str," ");
- if (*++s) {
- (void)apush(stab_array(incstab),str_make(s,0));
- }
- else if (argv[1]) {
- (void)apush(stab_array(incstab),str_make(argv[1],0));
- str_cat(str,argv[1]);
- argc--,argv++;
- str_cat(str," ");
- }
- break;
- case 'P':
- #ifdef TAINT
- if (euid != uid || egid != gid)
- fatal("No -P allowed in setuid scripts");
- #endif
- preprocess = TRUE;
- s++;
- goto reswitch;
- case 's':
- #ifdef TAINT
- if (euid != uid || egid != gid)
- fatal("No -s allowed in setuid scripts");
- #endif
- doswitches = TRUE;
- s++;
- goto reswitch;
- case 'S':
- dosearch = TRUE;
- s++;
- goto reswitch;
- case 'x':
- doextract = TRUE;
- s++;
- if (*s)
- cddir = savestr(s);
- break;
- case '-':
- argc--,argv++;
- goto switch_end;
- case 0:
- break;
- default:
- fatal("Unrecognized switch: -%s",s);
- }
- }
- switch_end:
- if (e_fp) {
- (void)fclose(e_fp);
- argc++,argv--;
- argv[0] = e_tmpname;
- }
- #ifndef PRIVLIB
- #define PRIVLIB "Lib:Perl"
- #endif
- (void)apush(stab_array(incstab),str_make(PRIVLIB,0));
- (void)apush(stab_array(incstab),str_make("@",1));
-
- str_set(&str_no,No);
- str_set(&str_yes,Yes);
-
- /* open script */
-
- if (argv[0] == Nullch)
- argv[0] = "-";
- #if 0
- if (dosearch && !index(argv[0], '/') && (s = getenv("PATH")) != Nullch) {
- char *xfound = Nullch, *xfailed = Nullch;
- int len;
-
- bufend = s + strlen(s);
- while (*s) {
- #ifndef MSDOS
- s = cpytill(tokenbuf,s,bufend,':',&len);
- #else
- for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++);
- tokenbuf[len] = '\0';
- #endif
- if (*s)
- s++;
- #ifndef MSDOS
- if (len && tokenbuf[len-1] != '/')
- #else
- if (len && tokenbuf[len-1] != '\\')
- #endif
- (void)strcat(tokenbuf+len,"/");
- (void)strcat(tokenbuf+len,argv[0]);
- #ifdef DEBUGGING
- if (debug & 1)
- fprintf(stderr,"Looking for %s\n",tokenbuf);
- #endif
- if (stat(tokenbuf,&statbuf) < 0) /* not there? */
- continue;
- if (statbuf.st_type == T_FILE) {
- xfound = tokenbuf; /* bingo! */
- break;
- }
- if (!xfailed)
- xfailed = savestr(tokenbuf);
- }
- if (!xfound)
- fatal("Can't execute %s", xfailed ? xfailed : argv[0] );
- if (xfailed)
- Safefree(xfailed);
- argv[0] = savestr(xfound);
- }
- #endif
-
- origfilename = savestr(argv[0]);
- curcmd->c_filestab = fstab(origfilename);
- if (strEQ(origfilename,"-"))
- argv[0] = "";
-
- if (preprocess) {
- FILE *fp1 = (*argv[0] ? fopen(argv[0],"r") : stdin);
- FILE *fp2;
- char *tmp = mktemp("CppTmp");
- int ch;
- int nl = 1;
- char line_buf[10];
- int i;
-
- if (fp1 == Nullfp) {
- _kernel_oserror *ep;
- if (ep)
- fatal("Can't open perl script \"%s\": %s\n",
- origfilename, ep->errmess);
- else
- fatal("Can't open perl script \"%s\"\n", origfilename);
- }
-
- if (tmp == Nullch || (fp2 = fopen(tmp,"w")) == Nullfp)
- fatal("Can't open temporary file for preprocessing\n");
-
- while ((ch = getc(fp1)) != EOF)
- {
- if (ch == '\n')
- {
- nl = 1;
- putc(ch,fp2);
- continue;
- }
-
- if (!nl || ch != '#')
- {
- nl = 0;
- putc(ch,fp2);
- continue;
- }
-
- /* We have a '#' at the start of the line */
-
- /* Skip space */
- for (ch = getc(fp1); ch == ' ' || ch == '\t'; ch = getc(fp1))
- ;
-
- /* get the command */
- for (i = 0; i < 10;)
- {
- line_buf[i++] = ch;
-
- ch = getc(fp1);
- if (ch == EOF || isspace(ch))
- break;
- }
-
- /* Check that it's the correct length for a command */
- if (i != 2 && (i < 4 || i > 7))
- goto skip_line;
-
- /* Check for preprocessor keywords */
- switch (line_buf[0])
- {
- case 'i':
- if (i == 2 && strnEQ(line_buf,"if",2))
- goto keep_line;
- if (i == 5 && strnEQ(line_buf,"ifdef",5))
- goto keep_line;
- if (i == 6 && strnEQ(line_buf,"ifndef",6))
- goto keep_line;
- if (i == 7 && strnEQ(line_buf,"include",7))
- goto keep_line;
- goto skip_line;
- case 'e':
- if (i == 4 && strnEQ(line_buf,"else",4))
- goto keep_line;
- if (i == 5 && strnEQ(line_buf,"endif",5))
- goto keep_line;
- goto skip_line;
- case 'd':
- if (i == 6 && strnEQ(line_buf,"define",6))
- goto keep_line;
- goto skip_line;
- default:
- goto skip_line;
- }
- keep_line:
- /* Keep this line */
- putc('#',fp2);
- fwrite(line_buf,i,1,fp2);
-
- while (ch != EOF)
- {
- putc(ch,fp2);
- if (ch == '\n')
- break;
- ch = getc(fp1);
- }
-
- nl = 1;
-
- skip_line:
- /* Skip the rest of the line */
- while (ch != EOF && ch != '\n')
- ch = getc(fp1);
-
- nl = 1;
- }
-
- fclose(fp1);
- fclose(fp2);
-
- str_cat(str,"-I");
- str_cat(str,PRIVLIB);
-
- (void)sprintf(buf, "cc -E -C -pcc %s - < %s 2>Null:",
- str_get(str), tmp);
- rsfp = mypopen(buf,"r");
-
- remove(tmp);
- free(tmp);
- }
- else if (!*argv[0])
- rsfp = stdin;
- else
- rsfp = fopen(argv[0],"r");
-
- if (rsfp == Nullfp) {
- _kernel_oserror *ep;
- if (ep)
- fatal("Can't open perl script \"%s\": %s\n",
- stab_val(curcmd->c_filestab)->str_ptr, ep->errmess);
- else
- fatal("Can't open perl script \"%s\"\n",
- stab_val(curcmd->c_filestab)->str_ptr);
- }
- str_free(str); /* free -I directories */
-
- /* skip forward in input to the real script? */
-
- while (doextract) {
- if ((s = str_gets(linestr, rsfp, 0)) == Nullch)
- fatal("No Perl script found in input\n");
- if (*s == '#' && s[1] == '!' && instr(s,"perl")) {
- ungetc('\n',rsfp); /* to keep line count right */
- doextract = FALSE;
- if ((s = instr(s,"perl -")) != Nullch) {
- s += 6;
- while ((s = moreswitches(s)) != Nullch) ;
- }
- if (cddir && chdir(cddir) < 0)
- fatal("Can't chdir to %s",cddir);
- }
- }
-
- defstab = stabent("_",TRUE);
-
- if (perldb) {
- debstash = hnew(0);
- stab_xhash(stabent("_DB",TRUE)) = debstash;
- curstash = debstash;
- dbargs = stab_xarray(aadd((tmpstab = stabent("args",TRUE))));
- tmpstab->str_pok |= SP_MULTI;
- dbargs->ary_flags = 0;
- subname = str_make("main",4);
- DBstab = stabent("DB",TRUE);
- DBstab->str_pok |= SP_MULTI;
- DBline = stabent("dbline",TRUE);
- DBline->str_pok |= SP_MULTI;
- DBsub = hadd(tmpstab = stabent("sub",TRUE));
- tmpstab->str_pok |= SP_MULTI;
- DBsingle = stab_val((tmpstab = stabent("single",TRUE)));
- tmpstab->str_pok |= SP_MULTI;
- DBtrace = stab_val((tmpstab = stabent("trace",TRUE)));
- tmpstab->str_pok |= SP_MULTI;
- DBsignal = stab_val((tmpstab = stabent("signal",TRUE)));
- tmpstab->str_pok |= SP_MULTI;
- curstash = defstash;
- }
-
- /* init tokener */
-
- bufend = bufptr = str_get(linestr);
-
- savestack = anew(Nullstab); /* for saving non-local values */
- stack = anew(Nullstab); /* for saving non-local values */
- stack->ary_flags = 0; /* not a real array */
- afill(stack,63); afill(stack,-1); /* preextend stack */
- afill(savestack,63); afill(savestack,-1);
-
- /* now parse the script */
-
- error_count = 0;
- if (yyparse() || error_count) {
- if (minus_c)
- fatal("%s had compilation errors.\n", origfilename);
- else {
- fatal("Execution of %s aborted due to compilation errors.\n",
- origfilename);
- }
- }
-
- New(50,loop_stack,128,struct loop);
- #ifdef DEBUGGING
- if (debug) {
- New(51,debname,128,char);
- New(52,debdelim,128,char);
- }
- #endif
- curstash = defstash;
-
- preprocess = FALSE;
- if (e_fp) {
- e_fp = Nullfp;
- (void)UNLINK(e_tmpname);
- }
-
- /* initialize everything that won't change if we undump */
-
- if ((sigstab = stabent("SIG",allstabs)) != Nullstab) {
- sigstab->str_pok |= SP_MULTI;
- (void)hadd(sigstab);
- }
-
- magicalize("!#?^~=-%123456789.+&*,\\/[|`':>\024");
- userinit(); /* in case linked C routines want magical variables */
-
- amperstab = stabent("&",allstabs);
- leftstab = stabent("`",allstabs);
- rightstab = stabent("'",allstabs);
- sawampersand = (amperstab || leftstab || rightstab);
- if ((tmpstab = stabent(":",allstabs)) != Nullstab)
- str_set(STAB_STR(tmpstab),chopset);
- if ((tmpstab = stabent("\024",allstabs)) != Nullstab)
- os_starttime(&basetime);
-
- /* these aren't necessarily magical */
- if ((tmpstab = stabent(";",allstabs)) != Nullstab)
- str_set(STAB_STR(tmpstab),"\034");
- if ((tmpstab = stabent("]",allstabs)) != Nullstab) {
- str = STAB_STR(tmpstab);
- str_set(str,rcsid);
- str->str_u.str_nval = atof(patchlevel);
- str->str_nok = 1;
- }
- str_nset(stab_val(stabent("\"", TRUE)), " ", 1);
-
- stdinstab = stabent("STDIN",TRUE);
- stdinstab->str_pok |= SP_MULTI;
- stab_io(stdinstab) = stio_new();
- stab_io(stdinstab)->ifp = stdin;
- stab_io(stdinstab)->type = '-';
- tmpstab = stabent("stdin",TRUE);
- stab_io(tmpstab) = stab_io(stdinstab);
- tmpstab->str_pok |= SP_MULTI;
-
- tmpstab = stabent("STDOUT",TRUE);
- tmpstab->str_pok |= SP_MULTI;
- stab_io(tmpstab) = stio_new();
- stab_io(tmpstab)->ofp = stab_io(tmpstab)->ifp = stdout;
- stab_io(tmpstab)->type = '-';
- defoutstab = tmpstab;
- tmpstab = stabent("stdout",TRUE);
- stab_io(tmpstab) = stab_io(defoutstab);
- tmpstab->str_pok |= SP_MULTI;
-
- curoutstab = stabent("STDERR",TRUE);
- curoutstab->str_pok |= SP_MULTI;
- stab_io(curoutstab) = stio_new();
- stab_io(curoutstab)->ofp = stab_io(curoutstab)->ifp = stderr;
- stab_io(curoutstab)->type = '-';
- tmpstab = stabent("stderr",TRUE);
- stab_io(tmpstab) = stab_io(curoutstab);
- tmpstab->str_pok |= SP_MULTI;
- curoutstab = defoutstab; /* switch back to STDOUT */
-
- statname = Str_new(66,0); /* last filename we did stat on */
-
- err_no = 0; /* Clear the error record */
- strcpy(err_mess, "No error");
-
- argc--,argv++; /* skip name of script */
- if (doswitches) {
- for (; argc > 0 && **argv == '-'; argc--,argv++) {
- if (argv[0][1] == '-') {
- argc--,argv++;
- break;
- }
- str_numset(stab_val(stabent(argv[0]+1,TRUE)),(double)1.0);
- }
- }
- #ifdef TAINT
- tainted = 1;
- #endif
- if ((tmpstab = stabent("0",allstabs)) != Nullstab)
- str_set(stab_val(tmpstab),origfilename);
- if ((argvstab = stabent("ARGV",allstabs)) != Nullstab) {
- argvstab->str_pok |= SP_MULTI;
- (void)aadd(argvstab);
- aclear(stab_array(argvstab));
- for (; argc > 0; argc--,argv++) {
- (void)apush(stab_array(argvstab),str_make(argv[0],0));
- }
- }
-
- #ifdef TAINT
- (void) stabent("ENV",TRUE); /* must test PATH and IFS */
- #endif
-
- if ((envstab = stabent("ENV",allstabs)) != Nullstab) {
- envstab->str_pok |= SP_MULTI;
- (void)hadd(envstab);
- hclear(stab_hash(envstab), FALSE);
- for (s = getenvar("*",&val); s; s = getenvar(0,&val)) {
- int len = strlen(s);
- str = str_make(val,0);
- str_magic(str, envstab, 'E', s, len);
- (void)hstore(stab_hash(envstab), s, len, str, 0);
- }
- }
-
- #ifdef TAINT
- tainted = 0;
- #endif
-
- if ((tmpstab = stabent("<",allstabs)) != Nullstab)
- str_set(STAB_STR(tmpstab),getcwd(1,0));
-
- if (dowarn) {
- stab_check('A','Z');
- stab_check('a','z');
- }
-
- if (setjmp(top_env)) /* sets goto_targ on longjump */
- loop_ptr = -1; /* start label stack again */
-
- #ifdef DEBUGGING
- if (debug & 1024)
- dump_all();
- if (debug)
- fprintf(stderr,"\nEXECUTING...\n\n");
- #endif
-
- if (minus_c) {
- fprintf(stderr,"%s syntax OK\n", origfilename);
- exit(0);
- }
-
- /* do it */
-
- (void) cmd_exec(main_root,G_SCALAR,-1);
-
- if (goto_targ)
- fatal("Can't find label \"%s\"--aborting",goto_targ);
-
- return 0;
- }
-
- void
- magicalize(list)
- register char *list;
- {
- char sym[2];
-
- sym[1] = '\0';
- while ((*sym = *list++) != 0)
- magicname(sym, Nullch, 0);
- }
-
- void
- magicname(sym,name,namlen)
- char *sym;
- char *name;
- int namlen;
- {
- register STAB *stab;
-
- if ((stab = stabent(sym,allstabs)) != Nullstab) {
- stab_flags(stab) = SF_VMAGIC;
- str_magic(stab_val(stab), stab, 0, name, namlen);
- }
- }
-
- /* this routine is in perly.c by virtue of being sort of an alternate main() */
-
- int
- do_eval(str,optype,stash,gimme,arglast)
- STR *str;
- int optype;
- HASH *stash;
- int gimme;
- int *arglast;
- {
- STR **st = stack->ary_array;
- int retval;
- CMD *myroot;
- ARRAY *ar;
- int i;
- CMD * VOLATILE oldcurcmd = curcmd;
- VOLATILE int oldtmps_base = tmps_base;
- VOLATILE int oldsave = savestack->ary_fill;
- VOLATILE int oldperldb = perldb;
- SPAT * VOLATILE oldspat = curspat;
- static char *last_eval = Nullch;
- static CMD *last_root = Nullcmd;
- VOLATILE int sp = arglast[0];
- char *specfilename;
- char *tmpfilename;
-
- tmps_base = tmps_max;
- if (curstash != stash) {
- (void)savehptr(&curstash);
- curstash = stash;
- }
- str_set(stab_val(stabent("@",TRUE)),"");
- if (curcmd->c_line == 0) /* don't debug debugger... */
- perldb = FALSE;
- curcmd = &compiling;
- if (optype == O_EVAL) { /* normal eval */
- curcmd->c_filestab = fstab("(eval)");
- curcmd->c_line = 1;
- str_sset(linestr,str);
- str_cat(linestr,";"); /* be kind to them */
- }
- else {
- if (last_root && !in_eval) {
- Safefree(last_eval);
- cmd_free(last_root);
- last_root = Nullcmd;
- }
- specfilename = str_get(str);
- str_set(linestr,"");
- if (optype == O_REQUIRE && &str_undef !=
- hfetch(stab_hash(incstab), specfilename, strlen(specfilename), 0)) {
- curcmd = oldcurcmd;
- tmps_base = oldtmps_base;
- st[++sp] = &str_yes;
- perldb = oldperldb;
- return sp;
- }
- tmpfilename = savestr(specfilename);
- if (index("$%&\\@", *tmpfilename))
- rsfp = fopen(tmpfilename,"r");
- else {
- ar = stab_array(incstab);
- for (i = 0; i <= ar->ary_fill; i++) {
- (void)sprintf(buf,"%s.%s",
- str_get(afetch(ar,i,TRUE)), specfilename);
- rsfp = fopen(buf,"r");
- if (rsfp) {
- char *s = buf;
-
- if (*s == '@' && s[1] == '.')
- s += 2;
- Safefree(tmpfilename);
- tmpfilename = savestr(s);
- break;
- }
- }
- }
- curcmd->c_filestab = fstab(tmpfilename);
- Safefree(tmpfilename);
- if (!rsfp) {
- curcmd = oldcurcmd;
- tmps_base = oldtmps_base;
- if (optype == O_REQUIRE) {
- sprintf(tokenbuf,"Can't locate %s in @INC", specfilename);
- fatal("%s",tokenbuf);
- }
- if (gimme != G_ARRAY)
- st[++sp] = &str_undef;
- perldb = oldperldb;
- return sp;
- }
- curcmd->c_line = 0;
- }
- in_eval++;
- oldoldbufptr = oldbufptr = bufptr = str_get(linestr);
- bufend = bufptr + linestr->str_cur;
- if (++loop_ptr >= loop_max) {
- loop_max += 128;
- Renew(loop_stack, loop_max, struct loop);
- }
- loop_stack[loop_ptr].loop_label = "_EVAL_";
- loop_stack[loop_ptr].loop_sp = sp;
- #ifdef DEBUGGING
- if (debug & 4) {
- deb("(Pushing label #%d _EVAL_)\n", loop_ptr);
- }
- #endif
- if (setjmp(loop_stack[loop_ptr].loop_env)) {
- retval = 1;
- last_root = Nullcmd;
- }
- else {
- error_count = 0;
- if (rsfp) {
- retval = yyparse();
- retval |= error_count;
- }
- else if (last_root && *bufptr == *last_eval && strEQ(bufptr,last_eval)){
- retval = 0;
- eval_root = last_root; /* no point in reparsing */
- }
- else if (in_eval == 1) {
- if (last_root) {
- Safefree(last_eval);
- cmd_free(last_root);
- }
- last_eval = savestr(bufptr);
- last_root = Nullcmd;
- retval = yyparse();
- retval |= error_count;
- if (!retval)
- last_root = eval_root;
- }
- else
- retval = yyparse();
- }
- myroot = eval_root; /* in case cmd_exec does another eval! */
-
- if (retval) {
- st = stack->ary_array;
- sp = arglast[0];
- if (gimme != G_ARRAY)
- st[++sp] = &str_undef;
- last_root = Nullcmd; /* can't free on error, for some reason */
- if (rsfp) {
- fclose(rsfp);
- rsfp = 0;
- }
- }
- else {
- sp = cmd_exec(eval_root,gimme,sp);
- st = stack->ary_array;
- for (i = arglast[0] + 1; i <= sp; i++)
- st[i] = str_static(st[i]);
- /* if we don't save result, free zaps it */
- if (in_eval != 1 && myroot != last_root)
- cmd_free(myroot);
- }
-
- perldb = oldperldb;
- in_eval--;
- #ifdef DEBUGGING
- if (debug & 4) {
- char *tmps = loop_stack[loop_ptr].loop_label;
- deb("(Popping label #%d %s)\n",loop_ptr,
- tmps ? tmps : "" );
- }
- #endif
- loop_ptr--;
- tmps_base = oldtmps_base;
- curspat = oldspat;
- if (savestack->ary_fill > oldsave) /* let them use local() */
- restorelist(oldsave);
-
- if (optype != O_EVAL) {
- if (retval) {
- if (optype == O_REQUIRE)
- fatal("%s", str_get(stab_val(stabent("@",TRUE))));
- }
- else {
- curcmd = oldcurcmd;
- if (gimme == G_SCALAR ? str_true(st[sp]) : sp > arglast[0]) {
- (void)hstore(stab_hash(incstab), specfilename,
- strlen(specfilename), str_smake(stab_val(curcmd->c_filestab)),
- 0 );
- }
- else if (optype == O_REQUIRE)
- fatal("%s did not return a true value", specfilename);
- }
- }
- curcmd = oldcurcmd;
- return sp;
- }
-
- /* This routine handles any switches that can be given during run */
-
- static char *
- moreswitches(s)
- char *s;
- {
- switch (*s) {
- case '0':
- record_separator = 0;
- if (s[1] == '0' && !isdigit(s[2]))
- rslen = 0;
- while (*s >= '0' && *s <= '7') {
- record_separator <<= 3;
- record_separator += *s++ & 7;
- }
- return s;
- case 'a':
- minus_a = TRUE;
- s++;
- return s;
- case 'c':
- minus_c = TRUE;
- s++;
- return s;
- case 'd':
- #ifdef TAINT
- if (euid != uid || egid != gid)
- fatal("No -d allowed in setuid scripts");
- #endif
- perldb = TRUE;
- s++;
- return s;
- case 'D':
- #ifdef DEBUGGING
- #ifdef TAINT
- if (euid != uid || egid != gid)
- fatal("No -D allowed in setuid scripts");
- #endif
- debug = atoi(s+1);
- #else
- warn("Recompile perl with -DDEBUGGING to use -D switch\n");
- #endif
- break;
- case 'i':
- inplace = savestr(s+1);
- for (s = inplace; *s && !isspace(*s); s++) ;
- *s = '\0';
- argvoutstab = stabent("ARGVOUT",TRUE);
- break;
- case 'I':
- #ifdef TAINT
- if (euid != uid || egid != gid)
- fatal("No -I allowed in setuid scripts");
- #endif
- if (*++s) {
- (void)apush(stab_array(incstab),str_make(s,0));
- }
- else
- fatal("No space allowed after -I");
- break;
- case 'n':
- minus_n = TRUE;
- s++;
- return s;
- case 'p':
- minus_p = TRUE;
- s++;
- return s;
- case 'u':
- /* do_undump = TRUE; */
- s++;
- return s;
- case 'U':
- unsafe = TRUE;
- s++;
- return s;
- case 'v':
- fputs("\nThis is perl, version 3.0\n\n",stdout);
- fputs(rcsid,stdout);
- fputs("\nCopyright (c) 1989, 1990, Larry Wall\n",stdout);
- fputs("Archimedes port Copyright (c) 1990, Paul Moore\n", stdout);
- fputs("\n\
- Perl may be copied only under the terms of the GNU General Public License,\n\
- a copy of which can be found with the Perl 3.0 distribution kit.\n",stdout);
- exit(0);
- case 'w':
- dowarn = TRUE;
- s++;
- return s;
- case ' ':
- case '\n':
- case '\t':
- break;
- default:
- fatal("Switch meaningless after -x: -%s",s);
- }
- return Nullch;
- }
-