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- /* $RCSfile: str.h,v $$Revision: 4.0.1.4 $$Date: 92/06/08 15:41:45 $
- *
- * Copyright (c) 1991, Larry Wall
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Artistic License, as specified in the README file.
- *
- * $Log: str.h,v $
- * Revision 4.0.1.4 92/06/08 15:41:45 lwall
- * patch20: fixed confusion between a *var's real name and its effective name
- * patch20: removed implicit int declarations on functions
- *
- * Revision 4.0.1.3 91/11/05 18:41:47 lwall
- * patch11: random cleanup
- * patch11: solitary subroutine references no longer trigger typo warnings
- *
- * Revision 4.0.1.2 91/06/07 11:58:33 lwall
- * patch4: new copyright notice
- *
- * Revision 4.0.1.1 91/04/12 09:16:12 lwall
- * patch1: you may now use "die" and "caller" in a signal handler
- *
- * Revision 4.0 91/03/20 01:40:04 lwall
- * 4.0 baseline.
- *
- */
-
- struct string {
- char * str_ptr; /* pointer to malloced string */
- STRLEN str_len; /* allocated size */
- union {
- double str_nval; /* numeric value, if any */
- long str_useful; /* is this search optimization effective? */
- ARG *str_args; /* list of args for interpreted string */
- HASH *str_hash; /* string represents an assoc array (stab?) */
- ARRAY *str_array; /* string represents an array */
- CMD *str_cmd; /* command for this source line */
- struct {
- STAB *stb_stab; /* magic stab for magic "key" string */
- HASH *stb_stash; /* which symbol table this stab is in */
- } stb_u;
- } str_u;
- STRLEN str_cur; /* length of str_ptr as a C string */
- STR *str_magic; /* while free, link to next free str */
- /* while in use, ptr to "key" for magic items */
- unsigned char str_pok; /* state of str_ptr */
- unsigned char str_nok; /* state of str_nval */
- unsigned char str_rare; /* used by search strings */
- unsigned char str_state; /* one of SS_* below */
- /* also used by search strings for backoff */
- #ifdef TAINT
- bool str_tainted; /* 1 if possibly under control of $< */
- #endif
- };
-
- struct stab { /* should be identical, except for str_ptr */
- STBP * str_ptr; /* pointer to malloced string */
- STRLEN str_len; /* allocated size */
- union {
- double str_nval; /* numeric value, if any */
- long str_useful; /* is this search optimization effective? */
- ARG *str_args; /* list of args for interpreted string */
- HASH *str_hash; /* string represents an assoc array (stab?) */
- ARRAY *str_array; /* string represents an array */
- CMD *str_cmd; /* command for this source line */
- struct {
- STAB *stb_stab; /* magic stab for magic "key" string */
- HASH *stb_stash; /* which symbol table this stab is in */
- } stb_u;
- } str_u;
- STRLEN str_cur; /* length of str_ptr as a C string */
- STR *str_magic; /* while free, link to next free str */
- /* while in use, ptr to "key" for magic items */
- unsigned char str_pok; /* state of str_ptr */
- unsigned char str_nok; /* state of str_nval */
- unsigned char str_rare; /* used by search strings */
- unsigned char str_state; /* one of SS_* below */
- /* also used by search strings for backoff */
- #ifdef TAINT
- bool str_tainted; /* 1 if possibly under control of $< */
- #endif
- };
-
- #define str_stab stb_u.stb_stab
- #define str_stash stb_u.stb_stash
-
- /* some extra info tacked to some lvalue strings */
-
- struct lstring {
- struct string lstr;
- STRLEN lstr_offset;
- STRLEN lstr_len;
- };
-
- /* These are the values of str_pok: */
- #define SP_VALID 1 /* str_ptr is valid */
- #define SP_FBM 2 /* string was compiled for fbm search */
- #define SP_STUDIED 4 /* string was studied */
- #define SP_CASEFOLD 8 /* case insensitive fbm search */
- #define SP_INTRP 16 /* string was compiled for interping */
- #define SP_TAIL 32 /* fbm string is tail anchored: /foo$/ */
- #define SP_MULTI 64 /* symbol table entry probably isn't a typo */
- #define SP_TEMP 128 /* string slated to die, so can be plundered */
-
- #define Nullstr Null(STR*)
-
- /* These are the values of str_state: */
- #define SS_NORM 0 /* normal string */
- #define SS_INCR 1 /* normal string, incremented ptr */
- #define SS_SARY 2 /* array on save stack */
- #define SS_SHASH 3 /* associative array on save stack */
- #define SS_SINT 4 /* integer on save stack */
- #define SS_SLONG 5 /* long on save stack */
- #define SS_SSTRP 6 /* STR* on save stack */
- #define SS_SHPTR 7 /* HASH* on save stack */
- #define SS_SNSTAB 8 /* non-stab on save stack */
- #define SS_SCSV 9 /* callsave structure on save stack */
- #define SS_SAPTR 10 /* ARRAY* on save stack */
- #define SS_HASH 253 /* carrying an hash */
- #define SS_ARY 254 /* carrying an array */
- #define SS_FREE 255 /* in free list */
- /* str_state may have any value 0-255 when used to hold fbm pattern, in which */
- /* case it indicates offset to rarest character in screaminstr key */
-
- /* the following macro updates any magic values this str is associated with */
-
- #ifdef TAINT
- #define STABSET(x) \
- (x)->str_tainted |= tainted; \
- if ((x)->str_magic) \
- stabset((x)->str_magic,(x))
- #else
- #define STABSET(x) \
- if ((x)->str_magic) \
- stabset((x)->str_magic,(x))
- #endif
-
- #define STR_SSET(dst,src) if (dst != src) str_sset(dst,src)
-
- EXT STR **tmps_list;
- EXT int tmps_max INIT(-1);
- EXT int tmps_base INIT(-1);
-
- char *str_2ptr();
- double str_2num();
- STR *str_mortal();
- STR *str_2mortal();
- STR *str_make();
- STR *str_nmake();
- STR *str_smake();
- int str_cmp();
- int str_eq();
- void str_magic();
- void str_insert();
- void str_numset();
- void str_sset();
- void str_nset();
- void str_set();
- void str_chop();
- void str_cat();
- void str_scat();
- void str_ncat();
- void str_reset();
- void str_taintproper();
- void str_taintenv();
- STRLEN str_len();
-
- #define MULTI (3)
-