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Commit f71b19b6 authored by Dave Love's avatar Dave Love
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1999-09-04 Richard M. Stallman <rms@gnu.org> 

        * regex.c [emacs] (ISALNUM, ISALPHA, ISPUNCT): Don't depend on locale
        [emacs] (ISASCII): Don't define ISASCII in this case.
        (IS_REAL_ASCII): New macro, 2 alternate definitions.
        (ISUNIBYTE): Likewise.
        [emacs] (ISDIGIT, ISCNTRL, ISXDIGIT, ISGRAPH, ISPRINT):
        Don't use ISASCII.

        * regex.c: Handle new class names `ascii', `nonascii',
        `unibyte, `multibyte'.
        (BIT_ASCII, BIT_NONASCII, BIT_UNIBYTE, BIT_MULTIBYTE): New macros.
        (IS_CHAR_CLASS): Accept new class names.
        (regex_compile, re_match_2_internal): Handle the new classes.
parent 93548d2e
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Showing with 83 additions and 34 deletions
src/regex.c
View file @ f71b19b6
......@@ -191,32 +191,25 @@ init_syntax_once ()
/* Get the interface, including the syntax bits. */
#include "regex.h"
/* Jim Meyering writes:
/* isalpha etc. are used for the character classes. */
#include <ctype.h>
"... Some ctype macros are valid only for character codes that
isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
using /bin/cc or gcc but without giving an ansi option). So, all
ctype uses should be through macros like ISPRINT... If
STDC_HEADERS is defined, then autoconf has verified that the ctype
macros don't need to be guarded with references to isascii. ...
Defining isascii to 1 should let any compiler worth its salt
eliminate the && through constant folding." */
#ifdef emacs
#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
#define ISASCII(c) 1
#else
#define ISASCII(c) isascii(c)
#endif
/* 1 if C is an ASCII character. */
#define IS_REAL_ASCII(c) ((c) < 0200)
/* isalpha etc. are used for the character classes. */
#include <ctype.h>
/* 1 if C is a unibyte character. */
#define ISUNIBYTE(c) (SINGLE_BYTE_CHAR_P ((c)))
/* In Emacs, these are only used for single-byte characters. */
#define ISDIGIT(c) (ISASCII (c) && isdigit (c))
#define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
#define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
/* The Emacs definitions should not be directly affected by locales. */
#ifdef emacs
/* In Emacs, these are only used for single-byte characters. */
#define ISDIGIT(c) ((c) >= '0' && (c) <= '9')
#define ISCNTRL(c) ((c) < ' ')
#define ISXDIGIT(c) (((c) >= '0' && (c) <= '9') \
|| ((c) >= 'a' && (c) <= 'f') \
|| ((c) >= 'A' && (c) <= 'F'))
/* This is only used for single-byte characters. */
#define ISBLANK(c) ((c) == ' ' || (c) == '\t')
......@@ -224,25 +217,31 @@ init_syntax_once ()
/* The rest must handle multibyte characters. */
#define ISGRAPH(c) (SINGLE_BYTE_CHAR_P (c) \
? ISASCII (c) && isprint (c) && !isspace (c) \
? (c) > ' ' && !((c) >= 0177 && (c) <= 0237) \
: 1)
#define ISPRINT(c) (SINGLE_BYTE_CHAR_P (c) \
? ISASCII (c) && isalnum (c) \
? (c) >= ' ' && !((c) >= 0177 && (c) <= 0237) \
: 1)
#define ISALNUM(c) (SINGLE_BYTE_CHAR_P (c) \
? ISASCII (c) && isalnum (c) \
#define ISALNUM(c) (IS_REAL_ASCII (c) \
? (((c) >= 'a' && (c) <= 'z') \
|| ((c) >= 'A' && (c) <= 'Z') \
|| ((c) >= '0' && (c) <= '9')) \
: SYNTAX (c) == Sword)
#define ISALPHA(c) (SINGLE_BYTE_CHAR_P (c) \
? ISASCII (c) && isalpha (c) \
#define ISALPHA(c) (IS_REAL_ASCII (c) \
? (((c) >= 'a' && (c) <= 'z') \
|| ((c) >= 'A' && (c) <= 'Z')) \
: SYNTAX (c) == Sword)
#define ISLOWER(c) (LOWERCASEP (c))
#define ISPUNCT(c) (SINGLE_BYTE_CHAR_P (c) \
? ISASCII (c) && ispunct (c) \
#define ISPUNCT(c) (IS_REAL_ASCII (c) \
? ((c) > ' ' && (c) < 0177 \
&& !(((c) >= 'a' && (c) <= 'z') \
|| ((c) >= 'A' && (c) <= 'Z') \
|| ((c) >= '0' && (c) <= '9'))) \
: SYNTAX (c) != Sword)
#define ISSPACE(c) (SYNTAX (c) == Swhitespace)
......@@ -253,6 +252,33 @@ init_syntax_once ()
#else /* not emacs */
/* Jim Meyering writes:
"... Some ctype macros are valid only for character codes that
isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
using /bin/cc or gcc but without giving an ansi option). So, all
ctype uses should be through macros like ISPRINT... If
STDC_HEADERS is defined, then autoconf has verified that the ctype
macros don't need to be guarded with references to isascii. ...
Defining isascii to 1 should let any compiler worth its salt
eliminate the && through constant folding." */
#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
#define ISASCII(c) 1
#else
#define ISASCII(c) isascii(c)
#endif
/* 1 if C is an ASCII character. */
#define IS_REAL_ASCII(c) ((c) < 0200)
/* This distinction is not meaningful, except in Emacs. */
#define ISUNIBYTE(c) 1
#define ISDIGIT(c) (ISASCII (c) && isdigit (c))
#define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
#define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
#ifdef isblank
#define ISBLANK(c) (ISASCII (c) && isblank (c))
#else
......@@ -1809,12 +1835,16 @@ struct range_table_work_area
#define BIT_ALNUM 0x1
#define BIT_ALPHA 0x2
#define BIT_WORD 0x4
#define BIT_ASCII 0x8
#define BIT_NONASCII 0x10
#define BIT_GRAPH 0x20
#define BIT_LOWER 0x40
#define BIT_PRINT 0x80
#define BIT_PUNCT 0x100
#define BIT_SPACE 0x200
#define BIT_UPPER 0x400
#define BIT_UNIBYTE 0x800
#define BIT_MULTIBYTE 0x1000
/* Set a range (RANGE_START, RANGE_END) to WORK_AREA. */
#define SET_RANGE_TABLE_WORK_AREA(work_area, range_start, range_end) \
......@@ -1869,7 +1899,9 @@ struct range_table_work_area
|| STREQ (string, "space") || STREQ (string, "print") \
|| STREQ (string, "punct") || STREQ (string, "graph") \
|| STREQ (string, "cntrl") || STREQ (string, "blank") \
|| STREQ (string, "word"))
|| STREQ (string, "word") \
|| STREQ (string, "ascii") || STREQ (string, "nonascii") \
|| STREQ (string, "unibyte") || STREQ (string, "multibyte"))
#ifndef MATCH_MAY_ALLOCATE
......@@ -2360,17 +2392,21 @@ regex_compile (pattern, size, syntax, bufp)
int ch;
boolean is_alnum = STREQ (str, "alnum");
boolean is_alpha = STREQ (str, "alpha");
boolean is_ascii = STREQ (str, "ascii");
boolean is_blank = STREQ (str, "blank");
boolean is_cntrl = STREQ (str, "cntrl");
boolean is_digit = STREQ (str, "digit");
boolean is_graph = STREQ (str, "graph");
boolean is_lower = STREQ (str, "lower");
boolean is_multibyte = STREQ (str, "multibyte");
boolean is_nonascii = STREQ (str, "nonascii");
boolean is_print = STREQ (str, "print");
boolean is_punct = STREQ (str, "punct");
boolean is_space = STREQ (str, "space");
boolean is_unibyte = STREQ (str, "unibyte");
boolean is_upper = STREQ (str, "upper");
boolean is_xdigit = STREQ (str, "xdigit");
boolean is_word = STREQ (str, "word");
boolean is_xdigit = STREQ (str, "xdigit");
if (!IS_CHAR_CLASS (str))
FREE_STACK_RETURN (REG_ECTYPE);
......@@ -2393,11 +2429,15 @@ regex_compile (pattern, size, syntax, bufp)
if (is_alnum) bit = BIT_ALNUM;
if (is_alpha) bit = BIT_ALPHA;
if (is_ascii) bit = BIT_ASCII;
if (is_graph) bit = BIT_GRAPH;
if (is_lower) bit = BIT_LOWER;
if (is_multibyte) bit = BIT_MULTIBYTE;
if (is_nonascii) bit = BIT_NONASCII;
if (is_print) bit = BIT_PRINT;
if (is_punct) bit = BIT_PUNCT;
if (is_space) bit = BIT_SPACE;
if (is_unibyte) bit = BIT_UNIBYTE;
if (is_upper) bit = BIT_UPPER;
if (is_word) bit = BIT_WORD;
if (bit)
......@@ -2426,6 +2466,12 @@ regex_compile (pattern, size, syntax, bufp)
|| (is_upper && ISUPPER (ch))
|| (is_xdigit && ISXDIGIT (ch)))
SET_LIST_BIT (translated);
if ( (is_ascii && IS_REAL_ASCII (ch))
|| (is_nonascii && !IS_REAL_ASCII (ch))
|| (is_unibyte && ISUNIBYTE (ch))
|| (is_multibyte && !ISUNIBYTE (ch)))
SET_LIST_BIT (translated);
if ( (is_word && ISWORD (ch)))
SET_LIST_BIT (translated);
}
......@@ -3434,7 +3480,7 @@ re_compile_fastmap (bufp)
if (p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH)))
fastmap[j] = 1;
/* If we can match a syntax class, we can match
/* If we can match a character class, we can match
any character set. */
if (CHARSET_RANGE_TABLE_EXISTS_P (&p[-2])
&& CHARSET_RANGE_TABLE_BITS (&p[-2]) != 0)
......@@ -3450,8 +3496,7 @@ re_compile_fastmap (bufp)
/* Make P points the range table. */
p += CHARSET_BITMAP_SIZE (&p[-2]);
/* Extract the number of ranges in range table into
COUNT. */
/* Extract the number of ranges in range table into COUNT. */
EXTRACT_NUMBER_AND_INCR (count, p);
for (; count > 0; count--, p += 2 * 3) /* XXX */
{
......@@ -4802,11 +4847,15 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
if ( (class_bits & BIT_ALNUM && ISALNUM (c))
| (class_bits & BIT_ALPHA && ISALPHA (c))
| (class_bits & BIT_ASCII && IS_REAL_ASCII (c))
| (class_bits & BIT_GRAPH && ISGRAPH (c))
| (class_bits & BIT_LOWER && ISLOWER (c))
| (class_bits & BIT_MULTIBYTE && !ISUNIBYTE (c))
| (class_bits & BIT_NONASCII && !IS_REAL_ASCII (c))
| (class_bits & BIT_PRINT && ISPRINT (c))
| (class_bits & BIT_PUNCT && ISPUNCT (c))
| (class_bits & BIT_SPACE && ISSPACE (c))
| (class_bits & BIT_UNIBYTE && ISUNIBYTE (c))
| (class_bits & BIT_UPPER && ISUPPER (c))
| (class_bits & BIT_WORD && ISWORD (c)))
not = !not;
......
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