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Continue what #4494 started; introduce uid and gid formats.
[perl5.git] / handy.h
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a0d0e21e 1/* handy.h
a687059c 2 *
4eb8286e 3 * Copyright (c) 1991-1999, Larry Wall
a687059c 4 *
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5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
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8 */
9
85e6fe83 10#if !defined(__STDC__)
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11#ifdef NULL
12#undef NULL
13#endif
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14#ifndef I286
15# define NULL 0
16#else
17# define NULL 0L
18#endif
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19#endif
20
378cc40b 21#define Null(type) ((type)NULL)
8d063cd8 22#define Nullch Null(char*)
760ac839 23#define Nullfp Null(PerlIO*)
79072805 24#define Nullsv Null(SV*)
8d063cd8 25
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26#ifdef TRUE
27#undef TRUE
28#endif
29#ifdef FALSE
30#undef FALSE
31#endif
32#define TRUE (1)
33#define FALSE (0)
34
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35
36/* XXX Configure ought to have a test for a boolean type, if I can
37 just figure out all the headers such a test needs.
38 Andy Dougherty August 1996
39*/
232e078e 40/* bool is built-in for g++-2.6.3, which might be used for an extension.
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41 If the extension includes <_G_config.h> before this file then
42 _G_HAVE_BOOL will be properly set. If, however, the extension includes
43 this file first, then you will have to manually set -DHAS_BOOL in
44 your command line to avoid a conflict.
45*/
46#ifdef _G_HAVE_BOOL
47# if _G_HAVE_BOOL
48# ifndef HAS_BOOL
49# define HAS_BOOL 1
50# endif
51# endif
52#endif
53
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54/* The NeXT dynamic loader headers will not build with the bool macro
55 So declare them now to clear confusion.
56*/
8f1f23e8 57#if defined(NeXT) || defined(__NeXT__)
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58# undef FALSE
59# undef TRUE
60 typedef enum bool { FALSE = 0, TRUE = 1 } bool;
61# define ENUM_BOOL 1
62# ifndef HAS_BOOL
63# define HAS_BOOL 1
64# endif /* !HAS_BOOL */
8f1f23e8 65#endif /* NeXT || __NeXT__ */
641d3f0b 66
5d94fbed 67#ifndef HAS_BOOL
61bb5906 68# if defined(UTS) || defined(VMS)
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69# define bool int
70# else
71# define bool char
72# endif
a687059c 73#endif
0d3e774c 74
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75/* XXX A note on the perl source internal type system. The
76 original intent was that I32 be *exactly* 32 bits.
77
78 Currently, we only guarantee that I32 is *at least* 32 bits.
79 Specifically, if int is 64 bits, then so is I32. (This is the case
80 for the Cray.) This has the advantage of meshing nicely with
81 standard library calls (where we pass an I32 and the library is
82 expecting an int), but the disadvantage that an I32 is not 32 bits.
83 Andy Dougherty August 1996
24fef2a7 84
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85 There is no guarantee that there is *any* integral type with
86 exactly 32 bits. It is perfectly legal for a system to have
87 sizeof(short) == sizeof(int) == sizeof(long) == 8.
693762b4 88
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89 Similarly, there is no guarantee that I16 and U16 have exactly 16
90 bits.
693762b4 91
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92 For dealing with issues that may arise from various 32/64-bit
93 systems, we will ask Configure to check out
8175356b 94
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95 SHORTSIZE == sizeof(short)
96 INTSIZE == sizeof(int)
97 LONGSIZE == sizeof(long)
98 LONGLONGSIZE == sizeof(long long) (if HAS_LONG_LONG)
99 PTRSIZE == sizeof(void *)
100 DOUBLESIZE == sizeof(double)
101 LONG_DOUBLESIZE == sizeof(long double) (if HAS_LONG_DOUBLE).
8175356b 102
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103*/
104
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105typedef I8TYPE I8;
106typedef U8TYPE U8;
107typedef I16TYPE I16;
108typedef U16TYPE U16;
109typedef I32TYPE I32;
110typedef U32TYPE U32;
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111#ifdef Quad_t
112typedef I64TYPE I64;
113typedef U64TYPE U64;
114#endif
115
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116/* Mention I8SIZE, U8SIZE, I16SIZE, U16SIZE, I32SIZE, U32SIZE,
117 I64SIZE, and U64SIZE here so that metaconfig pulls them in. */
118
d8668976 119#if defined(UINT8_MAX) && defined(INT16_MAX) && defined(INT32_MAX)
5ff3f7a4 120
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121/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
122 Please search CHAR_MAX in perl.h for further details. */
123#define U8_MAX UINT8_MAX
124#define U8_MIN UINT8_MIN
125
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126#define I16_MAX INT16_MAX
127#define I16_MIN INT16_MIN
128#define U16_MAX UINT16_MAX
129#define U16_MIN UINT16_MIN
130
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131#define I32_MAX INT32_MAX
132#define I32_MIN INT32_MIN
133#define U32_MAX UINT32_MAX
134#define U32_MIN UINT32_MIN
135
136#else
137
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138/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
139 Please search CHAR_MAX in perl.h for further details. */
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140#define U8_MAX PERL_UCHAR_MAX
141#define U8_MIN PERL_UCHAR_MIN
79072805 142
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143#define I16_MAX PERL_SHORT_MAX
144#define I16_MIN PERL_SHORT_MIN
145#define U16_MAX PERL_USHORT_MAX
146#define U16_MIN PERL_USHORT_MIN
79072805 147
c4f23d77 148#if LONGSIZE > 4
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149# define I32_MAX PERL_INT_MAX
150# define I32_MIN PERL_INT_MIN
151# define U32_MAX PERL_UINT_MAX
152# define U32_MIN PERL_UINT_MIN
79072805 153#else
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154# define I32_MAX PERL_LONG_MAX
155# define I32_MIN PERL_LONG_MIN
156# define U32_MAX PERL_ULONG_MAX
157# define U32_MIN PERL_ULONG_MIN
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158#endif
159
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160#endif
161
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162#define BIT_DIGITS(N) (((N)*146)/485 + 1) /* log2(10) =~ 146/485 */
163#define TYPE_DIGITS(T) BIT_DIGITS(sizeof(T) * 8)
164#define TYPE_CHARS(T) (TYPE_DIGITS(T) + 2) /* sign, NUL */
165
ff68c719 166#define Ctl(ch) ((ch) & 037)
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167
168#define strNE(s1,s2) (strcmp(s1,s2))
169#define strEQ(s1,s2) (!strcmp(s1,s2))
170#define strLT(s1,s2) (strcmp(s1,s2) < 0)
171#define strLE(s1,s2) (strcmp(s1,s2) <= 0)
172#define strGT(s1,s2) (strcmp(s1,s2) > 0)
173#define strGE(s1,s2) (strcmp(s1,s2) >= 0)
174#define strnNE(s1,s2,l) (strncmp(s1,s2,l))
175#define strnEQ(s1,s2,l) (!strncmp(s1,s2,l))
378cc40b 176
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177#ifdef HAS_MEMCMP
178# define memNE(s1,s2,l) (memcmp(s1,s2,l))
179# define memEQ(s1,s2,l) (!memcmp(s1,s2,l))
180#else
181# define memNE(s1,s2,l) (bcmp(s1,s2,l))
182# define memEQ(s1,s2,l) (!bcmp(s1,s2,l))
183#endif
184
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185/*
186 * Character classes.
187 *
188 * Unfortunately, the introduction of locales means that we
189 * can't trust isupper(), etc. to tell the truth. And when
190 * it comes to /\w+/ with tainting enabled, we *must* be able
191 * to trust our character classes.
192 *
193 * Therefore, the default tests in the text of Perl will be
194 * independent of locale. Any code that wants to depend on
195 * the current locale will use the tests that begin with "lc".
196 */
197
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198#ifdef HAS_SETLOCALE /* XXX Is there a better test for this? */
199# ifndef CTYPE256
200# define CTYPE256
201# endif
202#endif
203
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204#define isALNUM(c) (isALPHA(c) || isDIGIT(c) || (c) == '_')
205#define isIDFIRST(c) (isALPHA(c) || (c) == '_')
206#define isALPHA(c) (isUPPER(c) || isLOWER(c))
207#define isSPACE(c) \
208 ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) =='\r' || (c) == '\f')
209#define isDIGIT(c) ((c) >= '0' && (c) <= '9')
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210#ifdef EBCDIC
211 /* In EBCDIC we do not do locales: therefore() isupper() is fine. */
212# define isUPPER(c) isupper(c)
213# define isLOWER(c) islower(c)
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214# define isALNUMC(c) isalnum(c)
215# define isASCII(c) isascii(c)
216# define isCNTRL(c) iscntrl(c)
217# define isGRAPH(c) isgraph(c)
9d116dd7 218# define isPRINT(c) isprint(c)
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219# define isPUNCT(c) ispunct(c)
220# define isXDIGIT(c) isxdigit(c)
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221# define toUPPER(c) toupper(c)
222# define toLOWER(c) tolower(c)
223#else
224# define isUPPER(c) ((c) >= 'A' && (c) <= 'Z')
225# define isLOWER(c) ((c) >= 'a' && (c) <= 'z')
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226# define isALNUMC(c) (isALPHA(c) || isDIGIT(c))
227# define isASCII(c) ((c) <= 127)
228# define isCNTRL(c) ((c) < ' ')
229# define isGRAPH(c) (isALNUM(c) || isPUNCT(c))
9d116dd7 230# define isPRINT(c) (((c) > 32 && (c) < 127) || isSPACE(c))
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231# define isPUNCT(c) (((c) >= 33 && (c) <= 47) || ((c) >= 58 && (c) <= 64) || ((c) >= 91 && (c) <= 96) || ((c) >= 123 && (c) <= 126))
232# define isXDIGIT(c) (isdigit(c) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
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233# define toUPPER(c) (isLOWER(c) ? (c) - ('a' - 'A') : (c))
234# define toLOWER(c) (isUPPER(c) ? (c) + ('a' - 'A') : (c))
235#endif
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236
237#ifdef USE_NEXT_CTYPE
238
239# define isALNUM_LC(c) \
37bd1396 240 (NXIsAlNum((unsigned int)(c)) || (char)(c) == '_')
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241# define isIDFIRST_LC(c) \
242 (NXIsAlpha((unsigned int)(c)) || (char)(c) == '_')
243# define isALPHA_LC(c) NXIsAlpha((unsigned int)(c))
244# define isSPACE_LC(c) NXIsSpace((unsigned int)(c))
245# define isDIGIT_LC(c) NXIsDigit((unsigned int)(c))
246# define isUPPER_LC(c) NXIsUpper((unsigned int)(c))
247# define isLOWER_LC(c) NXIsLower((unsigned int)(c))
37bd1396 248# define isALNUMC_LC(c) NXIsAlNum((unsigned int)(c))
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249# define isCNTRL_LC(c) NXIsCntrl((unsigned int)(c))
250# define isGRAPH_LC(c) NXIsGraph((unsigned int)(c))
ff68c719 251# define isPRINT_LC(c) NXIsPrint((unsigned int)(c))
b8c5462f 252# define isPUNCT_LC(c) NXIsPunct((unsigned int)(c))
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253# define toUPPER_LC(c) NXToUpper((unsigned int)(c))
254# define toLOWER_LC(c) NXToLower((unsigned int)(c))
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255
256#else /* !USE_NEXT_CTYPE */
b8c5462f 257
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258# if defined(CTYPE256) || (!defined(isascii) && !defined(HAS_ISASCII))
259
b8c5462f 260# define isALNUM_LC(c) (isalnum((unsigned char)(c)) || (char)(c) == '_')
ff68c719 261# define isIDFIRST_LC(c) (isalpha((unsigned char)(c)) || (char)(c) == '_')
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262# define isALPHA_LC(c) isalpha((unsigned char)(c))
263# define isSPACE_LC(c) isspace((unsigned char)(c))
264# define isDIGIT_LC(c) isdigit((unsigned char)(c))
265# define isUPPER_LC(c) isupper((unsigned char)(c))
266# define isLOWER_LC(c) islower((unsigned char)(c))
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267# define isALNUMC_LC(c) isalnum((unsigned char)(c))
268# define isCNTRL_LC(c) iscntrl((unsigned char)(c))
269# define isGRAPH_LC(c) isgraph((unsigned char)(c))
bbce6d69 270# define isPRINT_LC(c) isprint((unsigned char)(c))
b8c5462f 271# define isPUNCT_LC(c) ispunct((unsigned char)(c))
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272# define toUPPER_LC(c) toupper((unsigned char)(c))
273# define toLOWER_LC(c) tolower((unsigned char)(c))
274
275# else
276
b8c5462f 277# define isALNUM_LC(c) (isascii(c) && (isalnum(c) || (c) == '_'))
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278# define isIDFIRST_LC(c) (isascii(c) && (isalpha(c) || (c) == '_'))
279# define isALPHA_LC(c) (isascii(c) && isalpha(c))
280# define isSPACE_LC(c) (isascii(c) && isspace(c))
281# define isDIGIT_LC(c) (isascii(c) && isdigit(c))
282# define isUPPER_LC(c) (isascii(c) && isupper(c))
283# define isLOWER_LC(c) (isascii(c) && islower(c))
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284# define isALNUMC_LC(c) (isascii(c) && isalnum(c))
285# define isCNTRL_LC(c) (isascii(c) && iscntrl(c))
286# define isGRAPH_LC(c) (isascii(c) && isgraph(c))
bbce6d69 287# define isPRINT_LC(c) (isascii(c) && isprint(c))
b8c5462f 288# define isPUNCT_LC(c) (isascii(c) && ispunct(c))
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289# define toUPPER_LC(c) toupper(c)
290# define toLOWER_LC(c) tolower(c)
291
292# endif
a0d0e21e 293#endif /* USE_NEXT_CTYPE */
55204971 294
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295#define isALNUM_uni(c) is_uni_alnum(c)
296#define isIDFIRST_uni(c) is_uni_idfirst(c)
297#define isALPHA_uni(c) is_uni_alpha(c)
298#define isSPACE_uni(c) is_uni_space(c)
299#define isDIGIT_uni(c) is_uni_digit(c)
300#define isUPPER_uni(c) is_uni_upper(c)
301#define isLOWER_uni(c) is_uni_lower(c)
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302#define isALNUMC_uni(c) is_uni_alnumc(c)
303#define isASCII_uni(c) is_uni_ascii(c)
304#define isCNTRL_uni(c) is_uni_cntrl(c)
305#define isGRAPH_uni(c) is_uni_graph(c)
a0ed51b3 306#define isPRINT_uni(c) is_uni_print(c)
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307#define isPUNCT_uni(c) is_uni_punct(c)
308#define isXDIGIT_uni(c) is_uni_xdigit(c)
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309#define toUPPER_uni(c) to_uni_upper(c)
310#define toTITLE_uni(c) to_uni_title(c)
311#define toLOWER_uni(c) to_uni_lower(c)
312
313#define isALNUM_LC_uni(c) (c < 256 ? isALNUM_LC(c) : is_uni_alnum_lc(c))
314#define isIDFIRST_LC_uni(c) (c < 256 ? isIDFIRST_LC(c) : is_uni_idfirst_lc(c))
315#define isALPHA_LC_uni(c) (c < 256 ? isALPHA_LC(c) : is_uni_alpha_lc(c))
316#define isSPACE_LC_uni(c) (c < 256 ? isSPACE_LC(c) : is_uni_space_lc(c))
317#define isDIGIT_LC_uni(c) (c < 256 ? isDIGIT_LC(c) : is_uni_digit_lc(c))
318#define isUPPER_LC_uni(c) (c < 256 ? isUPPER_LC(c) : is_uni_upper_lc(c))
319#define isLOWER_LC_uni(c) (c < 256 ? isLOWER_LC(c) : is_uni_lower_lc(c))
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320#define isALNUMC_LC_uni(c) (c < 256 ? isALNUMC_LC(c) : is_uni_alnumc_lc(c))
321#define isCNTRL_LC_uni(c) (c < 256 ? isCNTRL_LC(c) : is_uni_cntrl_lc(c))
322#define isGRAPH_LC_uni(c) (c < 256 ? isGRAPH_LC(c) : is_uni_graph_lc(c))
a0ed51b3 323#define isPRINT_LC_uni(c) (c < 256 ? isPRINT_LC(c) : is_uni_print_lc(c))
b8c5462f 324#define isPUNCT_LC_uni(c) (c < 256 ? isPUNCT_LC(c) : is_uni_punct_lc(c))
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325#define toUPPER_LC_uni(c) (c < 256 ? toUPPER_LC(c) : to_uni_upper_lc(c))
326#define toTITLE_LC_uni(c) (c < 256 ? toUPPER_LC(c) : to_uni_title_lc(c))
327#define toLOWER_LC_uni(c) (c < 256 ? toLOWER_LC(c) : to_uni_lower_lc(c))
328
329#define isALNUM_utf8(p) is_utf8_alnum(p)
330#define isIDFIRST_utf8(p) is_utf8_idfirst(p)
331#define isALPHA_utf8(p) is_utf8_alpha(p)
332#define isSPACE_utf8(p) is_utf8_space(p)
333#define isDIGIT_utf8(p) is_utf8_digit(p)
334#define isUPPER_utf8(p) is_utf8_upper(p)
335#define isLOWER_utf8(p) is_utf8_lower(p)
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336#define isALNUMC_utf8(p) is_utf8_alnumc(p)
337#define isASCII_utf8(p) is_utf8_ascii(p)
338#define isCNTRL_utf8(p) is_utf8_cntrl(p)
339#define isGRAPH_utf8(p) is_utf8_graph(p)
a0ed51b3 340#define isPRINT_utf8(p) is_utf8_print(p)
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341#define isPUNCT_utf8(p) is_utf8_punct(p)
342#define isXDIGIT_utf8(p) is_utf8_xdigit(p)
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343#define toUPPER_utf8(p) to_utf8_upper(p)
344#define toTITLE_utf8(p) to_utf8_title(p)
345#define toLOWER_utf8(p) to_utf8_lower(p)
346
347#define isALNUM_LC_utf8(p) isALNUM_LC_uni(utf8_to_uv(p, 0))
348#define isIDFIRST_LC_utf8(p) isIDFIRST_LC_uni(utf8_to_uv(p, 0))
349#define isALPHA_LC_utf8(p) isALPHA_LC_uni(utf8_to_uv(p, 0))
350#define isSPACE_LC_utf8(p) isSPACE_LC_uni(utf8_to_uv(p, 0))
351#define isDIGIT_LC_utf8(p) isDIGIT_LC_uni(utf8_to_uv(p, 0))
352#define isUPPER_LC_utf8(p) isUPPER_LC_uni(utf8_to_uv(p, 0))
353#define isLOWER_LC_utf8(p) isLOWER_LC_uni(utf8_to_uv(p, 0))
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354#define isALNUMC_LC_utf8(p) isALNUMC_LC_uni(utf8_to_uv(p, 0))
355#define isCNTRL_LC_utf8(p) isCNTRL_LC_uni(utf8_to_uv(p, 0))
356#define isGRAPH_LC_utf8(p) isGRAPH_LC_uni(utf8_to_uv(p, 0))
a0ed51b3 357#define isPRINT_LC_utf8(p) isPRINT_LC_uni(utf8_to_uv(p, 0))
b8c5462f 358#define isPUNCT_LC_utf8(p) isPUNCT_LC_uni(utf8_to_uv(p, 0))
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359#define toUPPER_LC_utf8(p) toUPPER_LC_uni(utf8_to_uv(p, 0))
360#define toTITLE_LC_utf8(p) toTITLE_LC_uni(utf8_to_uv(p, 0))
361#define toLOWER_LC_utf8(p) toLOWER_LC_uni(utf8_to_uv(p, 0))
362
9d116dd7 363#ifdef EBCDIC
20ce7b12 364EXT int ebcdic_control (int);
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JH
365# define toCTRL(c) ebcdic_control(c)
366#else
367 /* This conversion works both ways, strangely enough. */
368# define toCTRL(c) (toUPPER(c) ^ 64)
369#endif
bbce6d69 370
378cc40b 371/* Line numbers are unsigned, 16 bits. */
79072805 372typedef U16 line_t;
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373#ifdef lint
374#define NOLINE ((line_t)0)
375#else
376#define NOLINE ((line_t) 65535)
377#endif
378
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379
380/* This looks obsolete (IZ):
381
382 XXX LEAKTEST doesn't really work in perl5. There are direct calls to
27d4fb96
PP
383 safemalloc() in the source, so LEAKTEST won't pick them up.
384 Further, if you try LEAKTEST, you'll also end up calling
385 Safefree, which might call safexfree() on some things that weren't
386 malloced with safexmalloc. The correct "fix" to this, if anyone
387 is interested, is to ensure that all calls go through the New and
388 Renew macros.
389 --Andy Dougherty August 1996
390*/
55497cff 391
a687059c 392#ifndef lint
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393
394#define NEWSV(x,len) newSV(len)
395
a687059c 396#ifndef LEAKTEST
598a3d64 397
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PP
398#define New(x,v,n,t) (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
399#define Newc(x,v,n,t,c) (v = (c*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
400#define Newz(x,v,n,t) (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t)))), \
401 memzero((char*)(v), (n)*sizeof(t))
402#define Renew(v,n,t) \
403 (v = (t*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
404#define Renewc(v,n,t,c) \
405 (v = (c*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
406#define Safefree(d) safefree((Malloc_t)(d))
55497cff 407
a687059c 408#else /* LEAKTEST */
55497cff 409
ff68c719
PP
410#define New(x,v,n,t) (v = (t*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t))))
411#define Newc(x,v,n,t,c) (v = (c*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t))))
412#define Newz(x,v,n,t) (v = (t*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t)))), \
413 memzero((char*)(v), (n)*sizeof(t))
414#define Renew(v,n,t) \
415 (v = (t*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
416#define Renewc(v,n,t,c) \
417 (v = (c*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
8c52afec 418#define Safefree(d) safexfree((Malloc_t)(d))
ff68c719 419
fc36a67e 420#define MAXXCOUNT 1400
8c52afec
IZ
421#define MAXY_SIZE 80
422#define MAXYCOUNT 16 /* (MAXY_SIZE/4 + 1) */
423extern long xcount[MAXXCOUNT];
424extern long lastxcount[MAXXCOUNT];
425extern long xycount[MAXXCOUNT][MAXYCOUNT];
426extern long lastxycount[MAXXCOUNT][MAXYCOUNT];
55497cff 427
a687059c 428#endif /* LEAKTEST */
55497cff 429
ff68c719
PP
430#define Move(s,d,n,t) (void)memmove((char*)(d),(char*)(s), (n) * sizeof(t))
431#define Copy(s,d,n,t) (void)memcpy((char*)(d),(char*)(s), (n) * sizeof(t))
432#define Zero(d,n,t) (void)memzero((char*)(d), (n) * sizeof(t))
55497cff 433
a687059c 434#else /* lint */
55497cff 435
ff68c719
PP
436#define New(x,v,n,s) (v = Null(s *))
437#define Newc(x,v,n,s,c) (v = Null(s *))
438#define Newz(x,v,n,s) (v = Null(s *))
439#define Renew(v,n,s) (v = Null(s *))
bee1dbe2 440#define Move(s,d,n,t)
a687059c
LW
441#define Copy(s,d,n,t)
442#define Zero(d,n,t)
ff68c719 443#define Safefree(d) (d) = (d)
55497cff 444
a687059c 445#endif /* lint */
bee1dbe2 446
2304df62 447#ifdef USE_STRUCT_COPY
ff68c719 448#define StructCopy(s,d,t) (*((t*)(d)) = *((t*)(s)))
bee1dbe2
LW
449#else
450#define StructCopy(s,d,t) Copy(s,d,1,t)
451#endif