121 lines
5.3 KiB
C
121 lines
5.3 KiB
C
/*************************************************************************/
|
|
/* */
|
|
/* Language Technologies Institute */
|
|
/* Carnegie Mellon University */
|
|
/* Copyright (c) 1999 */
|
|
/* All Rights Reserved. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to use and distribute */
|
|
/* this software and its documentation without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of this work, and to */
|
|
/* permit persons to whom this work is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* 1. The code must retain the above copyright notice, this list of */
|
|
/* conditions and the following disclaimer. */
|
|
/* 2. Any modifications must be clearly marked as such. */
|
|
/* 3. Original authors' names are not deleted. */
|
|
/* 4. The authors' names are not used to endorse or promote products */
|
|
/* derived from this software without specific prior written */
|
|
/* permission. */
|
|
/* */
|
|
/* CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK */
|
|
/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
|
|
/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
|
|
/* SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE */
|
|
/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
|
|
/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
|
|
/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
|
|
/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
|
|
/* THIS SOFTWARE. */
|
|
/* */
|
|
/*************************************************************************/
|
|
/* Author: Alan W Black (awb@cs.cmu.edu) */
|
|
/* Date: July 1999 */
|
|
/*************************************************************************/
|
|
/* */
|
|
/* Tokenizer for strings and files */
|
|
/* */
|
|
/*************************************************************************/
|
|
#ifndef _CST_TOKENSTREAM_H__
|
|
#define _CST_TOKENSTREAM_H__
|
|
|
|
#include "cst_alloc.h"
|
|
#include "cst_string.h"
|
|
#include "cst_file.h"
|
|
|
|
typedef struct cst_tokenstream_struct {
|
|
cst_file fd;
|
|
int file_pos;
|
|
int line_number;
|
|
cst_string *string_buffer;
|
|
|
|
int current_char;
|
|
|
|
int token_pos;
|
|
int ws_max;
|
|
cst_string *whitespace;
|
|
int prep_max;
|
|
cst_string *prepunctuation;
|
|
int token_max;
|
|
cst_string *token;
|
|
int postp_max;
|
|
cst_string *postpunctuation;
|
|
|
|
/* Should only be set through set_charclasses as charclass table needs */
|
|
/* to be updated when you reset these */
|
|
const cst_string *p_whitespacesymbols;
|
|
const cst_string *p_singlecharsymbols;
|
|
const cst_string *p_prepunctuationsymbols;
|
|
const cst_string *p_postpunctuationsymbols;
|
|
|
|
cst_string charclass[256];
|
|
} cst_tokenstream;
|
|
|
|
#define TS_CHARCLASS_NONE 0
|
|
#define TS_CHARCLASS_WHITESPACE 2
|
|
#define TS_CHARCLASS_SINGLECHAR 4
|
|
#define TS_CHARCLASS_PREPUNCT 8
|
|
#define TS_CHARCLASS_POSTPUNCT 16
|
|
#define TS_CHARCLASS_QUOTE 32
|
|
|
|
#define ts_charclass(C,CLASS,TS) ((TS)->charclass[(unsigned char)C] & CLASS)
|
|
|
|
extern const cst_string * const cst_ts_default_whitespacesymbols;
|
|
extern const cst_string * const cst_ts_default_prepunctuationsymbols;
|
|
extern const cst_string * const cst_ts_default_postpunctuationsymbols;
|
|
extern const cst_string * const cst_ts_default_singlecharsymbols;
|
|
|
|
/* Public functions for tokenstream manipulation */
|
|
cst_tokenstream *ts_open(const char *filename,
|
|
const cst_string *whitespacesymbols,
|
|
const cst_string *singlecharsymbols,
|
|
const cst_string *prepunctsymbols,
|
|
const cst_string *postpunctsymbols);
|
|
cst_tokenstream *ts_open_string(const cst_string *string,
|
|
const cst_string *whitespacesymbols,
|
|
const cst_string *singlecharsymbols,
|
|
const cst_string *prepunctsymbols,
|
|
const cst_string *postpunctsymbols);
|
|
void ts_close(cst_tokenstream *ts);
|
|
|
|
int ts_eof(cst_tokenstream *ts);
|
|
const cst_string *ts_get(cst_tokenstream *ts);
|
|
|
|
const cst_string *ts_get_quoted_token(cst_tokenstream *ts,
|
|
char quote,
|
|
char escape);
|
|
|
|
void set_charclasses(cst_tokenstream *ts,
|
|
const cst_string *whitespace,
|
|
const cst_string *singlecharsymbols,
|
|
const cst_string *prepunctuation,
|
|
const cst_string *postpunctuation);
|
|
|
|
int ts_read(void *buff, int size, int num, cst_tokenstream *ts);
|
|
|
|
int ts_set_stream_pos(cst_tokenstream *ts,int pos);
|
|
int ts_get_stream_pos(cst_tokenstream *ts);
|
|
|
|
#endif
|