mirror of
https://github.com/python/cpython.git
synced 2025-10-31 21:51:50 +00:00
7e47402264
comments, docstrings or error messages. I fixed two minor things in
test_winreg.py ("didn't" -> "Didn't" and "Didnt" -> "Didn't").
There is a minor style issue involved: Guido seems to have preferred English
grammar (behaviour, honour) in a couple places. This patch changes that to
American, which is the more prominent style in the source. I prefer English
myself, so if English is preferred, I'd be happy to supply a patch myself ;)
155 lines
5.4 KiB
C
155 lines
5.4 KiB
C
/*
|
|
* -*- mode: c-mode; c-file-style: python -*-
|
|
*/
|
|
|
|
#ifndef Py_REGEXPR_H
|
|
#define Py_REGEXPR_H
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* regexpr.h
|
|
*
|
|
* Author: Tatu Ylonen <ylo@ngs.fi>
|
|
*
|
|
* Copyright (c) 1991 Tatu Ylonen, Espoo, Finland
|
|
*
|
|
* Permission to use, copy, modify, distribute, and sell this software
|
|
* and its documentation for any purpose is hereby granted without fee,
|
|
* provided that the above copyright notice appear in all copies. This
|
|
* software is provided "as is" without express or implied warranty.
|
|
*
|
|
* Created: Thu Sep 26 17:15:36 1991 ylo
|
|
* Last modified: Mon Nov 4 15:49:46 1991 ylo
|
|
*/
|
|
|
|
/* $Id$ */
|
|
|
|
#ifndef REGEXPR_H
|
|
#define REGEXPR_H
|
|
|
|
#define RE_NREGS 100 /* number of registers available */
|
|
|
|
typedef struct re_pattern_buffer
|
|
{
|
|
unsigned char *buffer; /* compiled pattern */
|
|
int allocated; /* allocated size of compiled pattern */
|
|
int used; /* actual length of compiled pattern */
|
|
unsigned char *fastmap; /* fastmap[ch] is true if ch can start pattern */
|
|
unsigned char *translate; /* translation to apply during compilation/matching */
|
|
unsigned char fastmap_accurate; /* true if fastmap is valid */
|
|
unsigned char can_be_null; /* true if can match empty string */
|
|
unsigned char uses_registers; /* registers are used and need to be initialized */
|
|
int num_registers; /* number of registers used */
|
|
unsigned char anchor; /* anchor: 0=none 1=begline 2=begbuf */
|
|
} *regexp_t;
|
|
|
|
typedef struct re_registers
|
|
{
|
|
int start[RE_NREGS]; /* start offset of region */
|
|
int end[RE_NREGS]; /* end offset of region */
|
|
} *regexp_registers_t;
|
|
|
|
/* bit definitions for syntax */
|
|
#define RE_NO_BK_PARENS 1 /* no quoting for parentheses */
|
|
#define RE_NO_BK_VBAR 2 /* no quoting for vertical bar */
|
|
#define RE_BK_PLUS_QM 4 /* quoting needed for + and ? */
|
|
#define RE_TIGHT_VBAR 8 /* | binds tighter than ^ and $ */
|
|
#define RE_NEWLINE_OR 16 /* treat newline as or */
|
|
#define RE_CONTEXT_INDEP_OPS 32 /* ^$?*+ are special in all contexts */
|
|
#define RE_ANSI_HEX 64 /* ansi sequences (\n etc) and \xhh */
|
|
#define RE_NO_GNU_EXTENSIONS 128 /* no gnu extensions */
|
|
|
|
/* definitions for some common regexp styles */
|
|
#define RE_SYNTAX_AWK (RE_NO_BK_PARENS|RE_NO_BK_VBAR|RE_CONTEXT_INDEP_OPS)
|
|
#define RE_SYNTAX_EGREP (RE_SYNTAX_AWK|RE_NEWLINE_OR)
|
|
#define RE_SYNTAX_GREP (RE_BK_PLUS_QM|RE_NEWLINE_OR)
|
|
#define RE_SYNTAX_EMACS 0
|
|
|
|
#define Sword 1
|
|
#define Swhitespace 2
|
|
#define Sdigit 4
|
|
#define Soctaldigit 8
|
|
#define Shexdigit 16
|
|
|
|
/* Rename all exported symbols to avoid conflicts with similarly named
|
|
symbols in some systems' standard C libraries... */
|
|
|
|
#define re_syntax _Py_re_syntax
|
|
#define re_syntax_table _Py_re_syntax_table
|
|
#define re_compile_initialize _Py_re_compile_initialize
|
|
#define re_set_syntax _Py_re_set_syntax
|
|
#define re_compile_pattern _Py_re_compile_pattern
|
|
#define re_match _Py_re_match
|
|
#define re_search _Py_re_search
|
|
#define re_compile_fastmap _Py_re_compile_fastmap
|
|
#define re_comp _Py_re_comp
|
|
#define re_exec _Py_re_exec
|
|
|
|
#ifdef HAVE_PROTOTYPES
|
|
|
|
extern int re_syntax;
|
|
/* This is the actual syntax mask. It was added so that Python could do
|
|
* syntax-dependent munging of patterns before compilation. */
|
|
|
|
extern unsigned char re_syntax_table[256];
|
|
|
|
void re_compile_initialize(void);
|
|
|
|
int re_set_syntax(int syntax);
|
|
/* This sets the syntax to use and returns the previous syntax. The
|
|
* syntax is specified by a bit mask of the above defined bits. */
|
|
|
|
char *re_compile_pattern(unsigned char *regex, int regex_size, regexp_t compiled);
|
|
/* This compiles the regexp (given in regex and length in regex_size).
|
|
* This returns NULL if the regexp compiled successfully, and an error
|
|
* message if an error was encountered. The buffer field must be
|
|
* initialized to a memory area allocated by malloc (or to NULL) before
|
|
* use, and the allocated field must be set to its length (or 0 if
|
|
* buffer is NULL). Also, the translate field must be set to point to a
|
|
* valid translation table, or NULL if it is not used. */
|
|
|
|
int re_match(regexp_t compiled, unsigned char *string, int size, int pos,
|
|
regexp_registers_t old_regs);
|
|
/* This tries to match the regexp against the string. This returns the
|
|
* length of the matched portion, or -1 if the pattern could not be
|
|
* matched and -2 if an error (such as failure stack overflow) is
|
|
* encountered. */
|
|
|
|
int re_search(regexp_t compiled, unsigned char *string, int size, int startpos,
|
|
int range, regexp_registers_t regs);
|
|
/* This searches for a substring matching the regexp. This returns the
|
|
* first index at which a match is found. range specifies at how many
|
|
* positions to try matching; positive values indicate searching
|
|
* forwards, and negative values indicate searching backwards. mstop
|
|
* specifies the offset beyond which a match must not go. This returns
|
|
* -1 if no match is found, and -2 if an error (such as failure stack
|
|
* overflow) is encountered. */
|
|
|
|
void re_compile_fastmap(regexp_t compiled);
|
|
/* This computes the fastmap for the regexp. For this to have any effect,
|
|
* the calling program must have initialized the fastmap field to point
|
|
* to an array of 256 characters. */
|
|
|
|
#else /* HAVE_PROTOTYPES */
|
|
|
|
extern int re_syntax;
|
|
extern unsigned char re_syntax_table[256];
|
|
void re_compile_initialize();
|
|
int re_set_syntax();
|
|
char *re_compile_pattern();
|
|
int re_match();
|
|
int re_search();
|
|
void re_compile_fastmap();
|
|
|
|
#endif /* HAVE_PROTOTYPES */
|
|
|
|
#endif /* REGEXPR_H */
|
|
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif /* !Py_REGEXPR_H */
|