7b2d710cd0
- Not compiled by default, nor hooked up to anything yet. - Both libraries licensed under modified BSD license. - Added top-level CMake file for both, to create a plain static library for each.
120 lines
5.3 KiB
C
120 lines
5.3 KiB
C
/*************************************************************************/
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/* */
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/* Language Technologies Institute */
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/* Carnegie Mellon University */
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/* Copyright (c) 1999 */
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/* All Rights Reserved. */
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/* */
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/* Permission is hereby granted, free of charge, to use and distribute */
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/* this software and its documentation without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of this work, and to */
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/* permit persons to whom this work is furnished to do so, subject to */
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/* the following conditions: */
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/* 1. The code must retain the above copyright notice, this list of */
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/* conditions and the following disclaimer. */
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/* 2. Any modifications must be clearly marked as such. */
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/* 3. Original authors' names are not deleted. */
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/* 4. The authors' names are not used to endorse or promote products */
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/* derived from this software without specific prior written */
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/* permission. */
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/* */
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/* CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK */
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/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
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/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
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/* SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE */
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/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
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/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
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/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
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/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
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/* THIS SOFTWARE. */
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/* */
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/*************************************************************************/
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/* Author: Alan W Black (awb@cs.cmu.edu) */
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/* Date: July 1999 */
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/*************************************************************************/
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/* */
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/* Tokenizer for strings and files */
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/* */
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/*************************************************************************/
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#ifndef _CST_TOKENSTREAM_H__
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#define _CST_TOKENSTREAM_H__
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#include "cst_alloc.h"
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#include "cst_string.h"
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#include "cst_file.h"
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typedef struct cst_tokenstream_struct {
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cst_file fd;
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int file_pos;
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int line_number;
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cst_string *string_buffer;
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int current_char;
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int token_pos;
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int ws_max;
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cst_string *whitespace;
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int prep_max;
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cst_string *prepunctuation;
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int token_max;
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cst_string *token;
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int postp_max;
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cst_string *postpunctuation;
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/* Should only be set through set_charclasses as charclass table needs */
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/* to be updated when you reset these */
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const cst_string *p_whitespacesymbols;
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const cst_string *p_singlecharsymbols;
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const cst_string *p_prepunctuationsymbols;
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const cst_string *p_postpunctuationsymbols;
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cst_string charclass[256];
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} cst_tokenstream;
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#define TS_CHARCLASS_NONE 0
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#define TS_CHARCLASS_WHITESPACE 2
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#define TS_CHARCLASS_SINGLECHAR 4
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#define TS_CHARCLASS_PREPUNCT 8
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#define TS_CHARCLASS_POSTPUNCT 16
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#define TS_CHARCLASS_QUOTE 32
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#define ts_charclass(C,CLASS,TS) ((TS)->charclass[(unsigned char)C] & CLASS)
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extern const cst_string * const cst_ts_default_whitespacesymbols;
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extern const cst_string * const cst_ts_default_prepunctuationsymbols;
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extern const cst_string * const cst_ts_default_postpunctuationsymbols;
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extern const cst_string * const cst_ts_default_singlecharsymbols;
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/* Public functions for tokenstream manipulation */
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cst_tokenstream *ts_open(const char *filename,
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const cst_string *whitespacesymbols,
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const cst_string *singlecharsymbols,
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const cst_string *prepunctsymbols,
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const cst_string *postpunctsymbols);
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cst_tokenstream *ts_open_string(const cst_string *string,
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const cst_string *whitespacesymbols,
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const cst_string *singlecharsymbols,
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const cst_string *prepunctsymbols,
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const cst_string *postpunctsymbols);
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void ts_close(cst_tokenstream *ts);
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int ts_eof(cst_tokenstream *ts);
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const cst_string *ts_get(cst_tokenstream *ts);
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const cst_string *ts_get_quoted_token(cst_tokenstream *ts,
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char quote,
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char escape);
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void set_charclasses(cst_tokenstream *ts,
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const cst_string *whitespace,
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const cst_string *singlecharsymbols,
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const cst_string *prepunctuation,
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const cst_string *postpunctuation);
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int ts_read(void *buff, int size, int num, cst_tokenstream *ts);
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int ts_set_stream_pos(cst_tokenstream *ts,int pos);
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int ts_get_stream_pos(cst_tokenstream *ts);
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#endif
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