/* Definitions for data structures and routines for the regular
expression library.
- Copyright (C) 1985,1989-93,1995-98,2000,2001,2002,2003,2005
+ Copyright (C) 1985,1989-93,1995-98,2000,2001,2002,2003,2005,2006
Free Software Foundation, Inc.
This file is part of the GNU C Library.
# include <stddef.h>
#endif
+#ifdef _REGEX_LARGE_OFFSETS
+
+/* Use types and values that are wide enough to represent signed and
+ unsigned byte offsets in memory. This currently works only when
+ the regex code is used outside of the GNU C library; it is not yet
+ supported within glibc itself, and glibc users should not define
+ _REGEX_LARGE_OFFSETS. */
+
+/* The type of the offset of a byte within a string.
+ For historical reasons POSIX 1003.1-2004 requires that regoff_t be
+ at least as wide as off_t. However, many common POSIX platforms set
+ regoff_t to the more-sensible ssize_t and the Open Group has
+ signalled its intention to change the requirement to be that
+ regoff_t be at least as wide as ptrdiff_t and ssize_t; see XBD ERN
+ 60 (2005-08-25). We don't know of any hosts where ssize_t or
+ ptrdiff_t is wider than long int, so long int is safe. */
+typedef long int regoff_t;
+
+/* The type of nonnegative object indexes. Traditionally, GNU regex
+ uses 'int' for these. Code that uses __re_idx_t should work
+ regardless of whether the type is signed. */
+typedef size_t __re_idx_t;
+
+/* The type of object sizes. */
+typedef size_t __re_size_t;
+
+/* The type of object sizes, in places where the traditional code
+ uses unsigned long int. */
+typedef size_t __re_long_size_t;
+
+#else
+
+/* Use types that are binary-compatible with the traditional GNU regex
+ implementation, which mishandles strings longer than INT_MAX. */
+
+typedef int regoff_t;
+typedef int __re_idx_t;
+typedef unsigned int __re_size_t;
+typedef unsigned long int __re_long_size_t;
+
+#endif
+
/* The following two types have to be signed and unsigned integer type
wide enough to hold a value of a pointer. For most ANSI compilers
ptrdiff_t and size_t should be likely OK. Still size of these two
unsigned char *_REG_RE_NAME (buffer);
/* Number of bytes to which `re_buffer' points. */
- unsigned long int _REG_RE_NAME (allocated);
+ __re_long_size_t _REG_RE_NAME (allocated);
/* Number of bytes actually used in `re_buffer'. */
- unsigned long int _REG_RE_NAME (used);
+ __re_long_size_t _REG_RE_NAME (used);
/* Syntax setting with which the pattern was compiled. */
reg_syntax_t _REG_RE_NAME (syntax);
typedef struct re_pattern_buffer regex_t;
\f
-/* Type for byte offsets within the string. POSIX mandates this. */
-typedef int regoff_t;
-
-
/* This is the structure we store register match data in. See
regex.texinfo for a full description of what registers match. */
struct re_registers
{
- unsigned int _REG_RM_NAME (num_regs);
+ __re_size_t _REG_RM_NAME (num_regs);
regoff_t *_REG_RM_NAME (start);
regoff_t *_REG_RM_NAME (end);
};
characters. Return the starting position of the match, -1 for no
match, or -2 for an internal error. Also return register
information in REGS (if REGS and BUFFER->re_no_sub are nonzero). */
-extern int re_search (struct re_pattern_buffer *__buffer, const char *__string,
- int __length, int __start, int __range,
- struct re_registers *__regs);
+extern regoff_t re_search (struct re_pattern_buffer *__buffer,
+ const char *__string, __re_idx_t __length,
+ __re_idx_t __start, regoff_t __range,
+ struct re_registers *__regs);
/* Like `re_search', but search in the concatenation of STRING1 and
STRING2. Also, stop searching at index START + STOP. */
-extern int re_search_2 (struct re_pattern_buffer *__buffer,
- const char *__string1, int __length1,
- const char *__string2, int __length2,
- int __start, int __range, struct re_registers *__regs,
- int __stop);
+extern regoff_t re_search_2 (struct re_pattern_buffer *__buffer,
+ const char *__string1, __re_idx_t __length1,
+ const char *__string2, __re_idx_t __length2,
+ __re_idx_t __start, regoff_t __range,
+ struct re_registers *__regs,
+ __re_idx_t __stop);
/* Like `re_search', but return how many characters in STRING the regexp
in BUFFER matched, starting at position START. */
-extern int re_match (struct re_pattern_buffer *__buffer, const char *__string,
- int __length, int __start, struct re_registers *__regs);
+extern regoff_t re_match (struct re_pattern_buffer *__buffer,
+ const char *__string, __re_idx_t __length,
+ __re_idx_t __start, struct re_registers *__regs);
/* Relates to `re_match' as `re_search_2' relates to `re_search'. */
-extern int re_match_2 (struct re_pattern_buffer *__buffer,
- const char *__string1, int __length1,
- const char *__string2, int __length2,
- int __start, struct re_registers *__regs, int __stop);
+extern regoff_t re_match_2 (struct re_pattern_buffer *__buffer,
+ const char *__string1, __re_idx_t __length1,
+ const char *__string2, __re_idx_t __length2,
+ __re_idx_t __start, struct re_registers *__regs,
+ __re_idx_t __stop);
/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
freeing the old data. */
extern void re_set_registers (struct re_pattern_buffer *__buffer,
struct re_registers *__regs,
- unsigned int __num_regs,
+ __re_size_t __num_regs,
regoff_t *__starts, regoff_t *__ends);
#if defined _REGEX_RE_COMP || defined _LIBC
regmatch_t __pmatch[__restrict_arr],
int __eflags);
-extern size_t regerror (int __errcode, const regex_t *__preg,
- char *__errbuf, size_t __errbuf_size);
+extern size_t regerror (int __errcode, const regex_t *__restrict __preg,
+ char *__restrict __errbuf, size_t __errbuf_size);
extern void regfree (regex_t *__preg);
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