perl.h

早期freebsd实现

typedef struct stabptrs STBP;
typedef struct stab STAB;
typedef struct callsave CSV;

#include "handy.h"
#include "regexp.h"
#include "str.h"
#include "util.h"
#include "form.h"
#include "stab.h"
#include "spat.h"
#include "arg.h"
#include "cmd.h"
#include "array.h"
#include "hash.h"

#if defined(iAPX286) || defined(M_I286) || defined(I80286)
#   define I286
#endif

#ifndef	STANDARD_C
#ifdef CHARSPRINTF
    char *sprintf();
#else
    int sprintf();
#endif
#endif

EXT char *Yes INIT("1");
EXT char *No INIT("");

/* "gimme" values */

/* Note: cmd.c assumes that it can use && to produce one of these values! */
#define G_SCALAR 0
#define G_ARRAY 1

#ifdef CRIPPLED_CC
int str_true();
#else /* !CRIPPLED_CC */
#define str_true(str) (Str = (str), \
	(Str->str_pok ? \
	    ((*Str->str_ptr > '0' || \
	      Str->str_cur > 1 || \
	      (Str->str_cur && *Str->str_ptr != '0')) ? 1 : 0) \
	: \
	    (Str->str_nok ? (Str->str_u.str_nval != 0.0) : 0 ) ))
#endif /* CRIPPLED_CC */

#ifdef DEBUGGING
#define str_peek(str) (Str = (str), \
	(Str->str_pok ? \
	    Str->str_ptr : \
	    (Str->str_nok ? \
		(sprintf(tokenbuf,"num(%g)",Str->str_u.str_nval), \
		    (char*)tokenbuf) : \
		"" )))
#endif

#ifdef CRIPPLED_CC
char *str_get();
#else
#ifdef TAINT
#define str_get(str) (Str = (str), tainted |= Str->str_tainted, \
	(Str->str_pok ? Str->str_ptr : str_2ptr(Str)))
#else
#define str_get(str) (Str = (str), (Str->str_pok ? Str->str_ptr : str_2ptr(Str)))
#endif /* TAINT */
#endif /* CRIPPLED_CC */

#ifdef CRIPPLED_CC
double str_gnum();
#else /* !CRIPPLED_CC */
#ifdef TAINT
#define str_gnum(str) (Str = (str), tainted |= Str->str_tainted, \
	(Str->str_nok ? Str->str_u.str_nval : str_2num(Str)))
#else /* !TAINT */
#define str_gnum(str) (Str = (str), (Str->str_nok ? Str->str_u.str_nval : str_2num(Str)))
#endif /* TAINT*/
#endif /* CRIPPLED_CC */
EXT STR *Str;

#define GROWSTR(pp,lp,len) if (*(lp) < (len)) growstr(pp,lp,len)

#ifndef DOSISH
#define STR_GROW(str,len) if ((str)->str_len < (len)) str_grow(str,len)
#define Str_Grow str_grow
#else
/* extra parentheses intentionally NOT placed around "len"! */
#define STR_GROW(str,len) if ((str)->str_len < (unsigned long)len) \
		str_grow(str,(unsigned long)len)
#define Str_Grow(str,len) str_grow(str,(unsigned long)(len))
#endif /* DOSISH */

#ifndef BYTEORDER
#define BYTEORDER 0x1234
#endif

#if defined(htonl) && !defined(HAS_HTONL)
#define HAS_HTONL
#endif
#if defined(htons) && !defined(HAS_HTONS)
#define HAS_HTONS
#endif
#if defined(ntohl) && !defined(HAS_NTOHL)
#define HAS_NTOHL
#endif
#if defined(ntohs) && !defined(HAS_NTOHS)
#define HAS_NTOHS
#endif
#ifndef HAS_HTONL
#if (BYTEORDER & 0xffff) != 0x4321
#define HAS_HTONS
#define HAS_HTONL
#define HAS_NTOHS
#define HAS_NTOHL
#define MYSWAP
#define htons my_swap
#define htonl my_htonl
#define ntohs my_swap
#define ntohl my_ntohl
#endif
#else
#if (BYTEORDER & 0xffff) == 0x4321
#undef HAS_HTONS
#undef HAS_HTONL
#undef HAS_NTOHS
#undef HAS_NTOHL
#endif
#endif

/*
 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
 * -DWS
 */
#if BYTEORDER != 0x1234
# define HAS_VTOHL
# define HAS_VTOHS
# define HAS_HTOVL
# define HAS_HTOVS
# if BYTEORDER == 0x4321
#  define vtohl(x)	((((x)&0xFF)<<24)	\
			+(((x)>>24)&0xFF)	\
			+(((x)&0x0000FF00)<<8)	\
			+(((x)&0x00FF0000)>>8)	)
#  define vtohs(x)	((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
#  define htovl(x)	vtohl(x)
#  define htovs(x)	vtohs(x)
# endif
	/* otherwise default to functions in util.c */
#endif

#ifdef CASTNEGFLOAT
#define U_S(what) ((unsigned short)(what))
#define U_I(what) ((unsigned int)(what))
#define U_L(what) ((unsigned long)(what))
#else
unsigned long castulong();
#define U_S(what) ((unsigned int)castulong(what))
#define U_I(what) ((unsigned int)castulong(what))
#define U_L(what) (castulong(what))
#endif

CMD *add_label();
CMD *block_head();
CMD *append_line();
CMD *make_acmd();
CMD *make_ccmd();
CMD *make_icmd();
CMD *invert();
CMD *addcond();
CMD *addloop();
CMD *wopt();
CMD *over();

STAB *stabent();
STAB *genstab();

ARG *stab2arg();
ARG *op_new();
ARG *make_op();
ARG *make_match();
ARG *make_split();
ARG *rcatmaybe();
ARG *listish();
ARG *maybelistish();
ARG *localize();
ARG *fixeval();
ARG *jmaybe();
ARG *l();
ARG *fixl();
ARG *mod_match();
ARG *make_list();
ARG *cmd_to_arg();
ARG *addflags();
ARG *hide_ary();
ARG *cval_to_arg();

STR *str_new();
STR *stab_str();

int apply();
int do_each();
int do_subr();
int do_match();
int do_unpack();
int eval();		/* this evaluates expressions */
int do_eval();		/* this evaluates eval operator */
int do_assign();

SUBR *make_sub();

FCMD *load_format();

char *scanpat();
char *scansubst();
char *scantrans();
char *scanstr();
char *scanident();
char *str_append_till();
char *str_gets();
char *str_grow();

bool do_open();
bool do_close();
bool do_print();
bool do_aprint();
bool do_exec();
bool do_aexec();

int do_subst();
int cando();
int ingroup();
int whichsig();
int userinit();
#ifdef CRYPTSCRIPT
void cryptswitch();
#endif

void str_replace();
void str_inc();
void str_dec();
void str_free();
void cmd_free();
void arg_free();
void spat_free();
void regfree();
void stab_clear();
void do_chop();
void do_vop();
void do_write();
void do_join();
void do_sprintf();
void do_accept();
void do_pipe();
void do_vecset();
void do_unshift();
void do_execfree();
void magicalize();
void magicname();
void savelist();
void saveitem();
void saveint();
void savelong();
void savesptr();
void savehptr();
void restorelist();
void repeatcpy();
void make_form();
void dehoist();
void format();
void my_unexec();
void fatal();
void warn();
#ifdef DEBUGGING
void dump_all();
void dump_cmd();
void dump_arg();
void dump_flags();
void dump_stab();
void dump_spat();
#endif
#ifdef MSTATS
void mstats();
#endif

HASH *savehash();
ARRAY *saveary();

EXT char **origargv;
EXT int origargc;
EXT char **origenviron;
extern char **environ;

EXT long subline INIT(0);
EXT STR *subname INIT(Nullstr);
EXT int arybase INIT(0);

struct outrec {
    long	o_lines;
    char	*o_str;
    int		o_len;
};

EXT struct outrec outrec;
EXT struct outrec toprec;

EXT STAB *stdinstab INIT(Nullstab);
EXT STAB *last_in_stab INIT(Nullstab);
EXT STAB *defstab INIT(Nullstab);
EXT STAB *argvstab INIT(Nullstab);
EXT STAB *envstab INIT(Nullstab);
EXT STAB *sigstab INIT(Nullstab);
EXT STAB *defoutstab INIT(Nullstab);
EXT STAB *curoutstab INIT(Nullstab);
EXT STAB *argvoutstab INIT(Nullstab);
EXT STAB *incstab INIT(Nullstab);
EXT STAB *leftstab INIT(Nullstab);
EXT STAB *amperstab INIT(Nullstab);
EXT STAB *rightstab INIT(Nullstab);
EXT STAB *DBstab INIT(Nullstab);
EXT STAB *DBline INIT(Nullstab);
EXT STAB *DBsub INIT(Nullstab);

EXT HASH *defstash;		/* main symbol table */
EXT HASH *curstash;		/* symbol table for current package */
EXT HASH *debstash;		/* symbol table for perldb package */

EXT STR *curstname;		/* name of current package */

EXT STR *freestrroot INIT(Nullstr);
EXT STR *lastretstr INIT(Nullstr);
EXT STR *DBsingle INIT(Nullstr);
EXT STR *DBtrace INIT(Nullstr);
EXT STR *DBsignal INIT(Nullstr);
EXT STR *formfeed INIT(Nullstr);

EXT int lastspbase;
EXT int lastsize;

EXT char *hexdigit INIT("0123456789abcdef0123456789ABCDEFx");
EXT char *origfilename;
EXT FILE * VOLATILE rsfp INIT(Nullfp);
EXT char buf[1024];
EXT char *bufptr;
EXT char *oldbufptr;
EXT char *oldoldbufptr;
EXT char *bufend;

EXT STR *linestr INIT(Nullstr);

EXT char *rs INIT("\n");
EXT int rschar INIT('\n');	/* final char of rs, or 0777 if none */
EXT int rslen INIT(1);
EXT bool rspara INIT(FALSE);
EXT char *ofs INIT(Nullch);
EXT int ofslen INIT(0);
EXT char *ors INIT(Nullch);
EXT int orslen INIT(0);
EXT char *ofmt INIT(Nullch);
EXT char *inplace INIT(Nullch);
EXT char *nointrp INIT("");

EXT bool preprocess INIT(FALSE);
EXT bool minus_n INIT(FALSE);
EXT bool minus_p INIT(FALSE);
EXT bool minus_l INIT(FALSE);
EXT bool minus_a INIT(FALSE);
EXT bool doswitches INIT(FALSE);
EXT bool dowarn INIT(FALSE);
EXT bool doextract INIT(FALSE);
EXT bool allstabs INIT(FALSE);	/* init all customary symbols in symbol table?*/
EXT bool sawampersand INIT(FALSE);	/* must save all match strings */
EXT bool sawstudy INIT(FALSE);		/* do fbminstr on all strings */
EXT bool sawi INIT(FALSE);		/* study must assume case insensitive */
EXT bool sawvec INIT(FALSE);
EXT bool localizing INIT(FALSE);	/* are we processing a local() list? */

#ifndef MAXSYSFD
#   define MAXSYSFD 2
#endif
EXT int maxsysfd INIT(MAXSYSFD);	/* top fd to pass to subprocesses */

#ifdef CSH
EXT char *cshname INIT(CSH);
EXT int cshlen INIT(0);
#endif /* CSH */

#ifdef TAINT
EXT bool tainted INIT(FALSE);		/* using variables controlled by $< */
EXT bool taintanyway INIT(FALSE);	/* force taint checks when !set?id */
#endif

EXT bool nomemok INIT(FALSE);		/* let malloc context handle nomem */

#ifndef DOSISH
#define TMPPATH "/tmp/perl-eXXXXXX"
#else
#define TMPPATH "plXXXXXX"
#endif /* MSDOS */
EXT char *e_tmpname;
EXT FILE *e_fp INIT(Nullfp);

EXT char tokenbuf[256];
EXT int expectterm INIT(TRUE);		/* how to interpret ambiguous tokens */
EXT VOLATILE int in_eval INIT(FALSE);	/* trap fatal errors? */
EXT int multiline INIT(0);		/* $*--do strings hold >1 line? */
EXT int forkprocess;			/* so do_open |- can return proc# */
EXT int do_undump INIT(0);		/* -u or dump seen? */
EXT int error_count INIT(0);		/* how many errors so far, max 10 */
EXT int multi_start INIT(0);		/* 1st line of multi-line string */
EXT int multi_end INIT(0);		/* last line of multi-line string */
EXT int multi_open INIT(0);		/* delimiter of said string */
EXT int multi_close INIT(0);		/* delimiter of said string */

FILE *popen();
/* char *str_get(); */
STR *interp();
void free_arg();
STIO *stio_new();
void hoistmust();
void scanconst();

EXT struct stat statbuf;
EXT struct stat statcache;
EXT STAB *statstab INIT(Nullstab);
EXT STR *statname INIT(Nullstr);
#ifndef MSDOS
EXT struct tms timesbuf;
#endif
EXT int uid;
EXT int euid;
EXT int gid;
EXT int egid;
UIDTYPE getuid();
UIDTYPE geteuid();
GIDTYPE getgid();
GIDTYPE getegid();
EXT int unsafe;

#ifdef DEBUGGING
EXT VOLATILE int debug INIT(0);
EXT int dlevel INIT(0);
EXT int dlmax INIT(128);
EXT char *debname;
EXT char *debdelim;
#define YYDEBUG 1
#endif
EXT int perldb INIT(0);
#define YYMAXDEPTH 300

EXT line_t cmdline INIT(NOLINE);

EXT STR str_undef;
EXT STR str_no;
EXT STR str_yes;

/* runtime control stuff */

EXT struct loop {
    char *loop_label;		/* what the loop was called, if anything */
    int loop_sp;		/* stack pointer to copy stuff down to */
    jmp_buf loop_env;
} *loop_stack;

EXT int loop_ptr INIT(-1);
EXT int loop_max INIT(128);

EXT jmp_buf top_env;

EXT char * VOLATILE goto_targ INIT(Nullch); /* cmd_exec gets strange when set */

struct ufuncs {
    int (*uf_val)();
    int (*uf_set)();
    int uf_index;
};

EXT ARRAY *stack;		/* THE STACK */

EXT ARRAY * VOLATILE savestack;		/* to save non-local values on */

EXT ARRAY *tosave;		/* strings to save on recursive subroutine */

EXT ARRAY *lineary;		/* lines of script for debugger */
EXT ARRAY *dbargs;		/* args to call listed by caller function */

EXT ARRAY *fdpid;		/* keep fd-to-pid mappings for mypopen */
EXT HASH *pidstatus;		/* keep pid-to-status mappings for waitpid */

EXT int *di;			/* for tmp use in debuggers */
EXT char *dc;
EXT short *ds;

/* Fix these up for __STDC__ */
EXT time_t basetime INIT(0);
char *mktemp();
#ifndef STANDARD_C
/* All of these are in stdlib.h or time.h for ANSI C */
double atof();
long time();
struct tm *gmtime(), *localtime();
char *index(), *rindex();
char *strcpy(), *strcat();
#endif /* ! STANDARD_C */

#ifdef EUNICE
#define UNLINK unlnk
int unlnk();
#else
#define UNLINK unlink
#endif

#ifndef HAS_SETREUID
#ifdef HAS_SETRESUID
#define setreuid(r,e) setresuid(r,e,-1)
#define HAS_SETREUID
#endif
#endif
#ifndef HAS_SETREGID
#ifdef HAS_SETRESGID
#define setregid(r,e) setresgid(r,e,-1)
#define HAS_SETREGID
#endif
#endif

#define SCAN_DEF 0
#define SCAN_TR 1
#define SCAN_REPL 2