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New version from FSF.

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This commit is contained in:
Jim Meyering
1995-10-19 14:21:35 +00:00
parent 6dd358e12d
commit 43dd57eba9
2 changed files with 35 additions and 13 deletions
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42
lib/regex.c
View File

@@ -1157,7 +1157,7 @@ typedef struct
/* Push the info, starting with the registers. */ \
DEBUG_PRINT1 ("\n"); \
\
if (!RE_NO_POSIX_BACKTRACKING & bufp->syntax) \
if (!(RE_NO_POSIX_BACKTRACKING & bufp->syntax)) \
for (this_reg = lowest_active_reg; this_reg <= highest_active_reg; \
this_reg++) \
{ \
@@ -1279,7 +1279,7 @@ typedef struct
low_reg = (unsigned) POP_FAILURE_INT (); \
DEBUG_PRINT2 (" Popping low active reg: %d\n", low_reg); \
\
if (!RE_NO_POSIX_BACKTRACKING & bufp->syntax) \
if (!(RE_NO_POSIX_BACKTRACKING & bufp->syntax)) \
for (this_reg = high_reg; this_reg >= low_reg; this_reg--) \
{ \
DEBUG_PRINT2 (" Popping reg: %d\n", this_reg); \
@@ -1293,6 +1293,16 @@ typedef struct
regstart[this_reg] = (const char *) POP_FAILURE_POINTER (); \
DEBUG_PRINT2 (" start: 0x%x\n", regstart[this_reg]); \
} \
else \
{ \
for (this_reg = highest_active_reg; this_reg > high_reg; this_reg--) \
{ \
reg_info[this_reg].word = 0; \
regend[this_reg] = 0; \
regstart[this_reg] = 0; \
} \
highest_active_reg = high_reg; \
} \
\
set_regs_matched_done = 0; \
DEBUG_STATEMENT (nfailure_points_popped++); \
@@ -1369,11 +1379,13 @@ static reg_errcode_t compile_range ();
if necessary. Also cast from a signed character in the constant
string passed to us by the user to an unsigned char that we can use
as an array index (in, e.g., `translate'). */
#ifndef PATFETCH
#define PATFETCH(c) \
do {if (p == pend) return REG_EEND; \
c = (unsigned char) *p++; \
if (translate) c = translate[c]; \
if (translate) c = (unsigned char) translate[c]; \
} while (0)
#endif
/* Fetch the next character in the uncompiled pattern, with no
translation. */
@@ -1390,7 +1402,10 @@ static reg_errcode_t compile_range ();
cast the subscript to translate because some data is declared as
`char *', to avoid warnings when a string constant is passed. But
when we use a character as a subscript we must make it unsigned. */
#define TRANSLATE(d) (translate ? translate[(unsigned char) (d)] : (d))
#ifndef TRANSLATE
#define TRANSLATE(d) \
(translate ? (char) translate[(unsigned char) (d)] : (d))
#endif
/* Macros for outputting the compiled pattern into `buffer'. */
@@ -1656,7 +1671,7 @@ regex_compile (pattern, size, syntax, bufp)
const char *pend = pattern + size;
/* How to translate the characters in the pattern. */
char *translate = bufp->translate;
RE_TRANSLATE_TYPE translate = bufp->translate;
/* Address of the count-byte of the most recently inserted `exactn'
command. This makes it possible to tell if a new exact-match
@@ -2822,7 +2837,7 @@ group_in_compile_stack (compile_stack, regnum)
static reg_errcode_t
compile_range (p_ptr, pend, translate, syntax, b)
const char **p_ptr, *pend;
char *translate;
RE_TRANSLATE_TYPE translate;
reg_syntax_t syntax;
unsigned char *b;
{
@@ -3256,7 +3271,7 @@ re_search_2 (bufp, string1, size1, string2, size2, startpos, range, regs, stop)
{
int val;
register char *fastmap = bufp->fastmap;
register char *translate = bufp->translate;
register RE_TRANSLATE_TYPE translate = bufp->translate;
int total_size = size1 + size2;
int endpos = startpos + range;
@@ -3544,7 +3559,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
unsigned char *just_past_start_mem = 0;
/* We use this to map every character in the string. */
char *translate = bufp->translate;
RE_TRANSLATE_TYPE translate = bufp->translate;
/* Failure point stack. Each place that can handle a failure further
down the line pushes a failure point on this stack. It consists of
@@ -3945,7 +3960,8 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
do
{
PREFETCH ();
if (translate[(unsigned char) *d++] != (char) *p++)
if ((unsigned char) translate[(unsigned char) *d++]
!= (unsigned char) *p++)
goto fail;
}
while (--mcnt);
@@ -4359,7 +4375,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
for that group and all inner ones, so that if we fail back
to this point, the group's information will be correct.
For example, in \(a*\)*\1, we need the preceding group,
and in \(\(a*\)b*\)\2, we need the inner group. */
and in \(zz\(a*\)b*\)\2, we need the inner group. */
/* We can't use `p' to check ahead because we push
a failure point to `p + mcnt' after we do this. */
@@ -5067,7 +5083,7 @@ static int
bcmp_translate (s1, s2, len, translate)
unsigned char *s1, *s2;
register int len;
char *translate;
RE_TRANSLATE_TYPE translate;
{
register unsigned char *p1 = s1, *p2 = s2;
while (len)
@@ -5239,7 +5255,9 @@ regcomp (preg, pattern, cflags)
{
unsigned i;
preg->translate = (char *) malloc (CHAR_SET_SIZE);
preg->translate
= (RE_TRANSLATE_TYPE) malloc (CHAR_SET_SIZE
* sizeof (*(RE_TRANSLATE_TYPE)0));
if (preg->translate == NULL)
return (int) REG_ESPACE;

6
lib/regex.h
View File

@@ -279,6 +279,10 @@ typedef enum
compiled, the `re_nsub' field is available. All other fields are
private to the regex routines. */
#ifndef RE_TRANSLATE_TYPE
#define RE_TRANSLATE_TYPE char *
#endif
struct re_pattern_buffer
{
/* [[[begin pattern_buffer]]] */
@@ -305,7 +309,7 @@ struct re_pattern_buffer
comparing them, or zero for no translation. The translation
is applied to a pattern when it is compiled and to a string
when it is matched. */
char *translate;
RE_TRANSLATE_TYPE translate;
/* Number of subexpressions found by the compiler. */
size_t re_nsub;