D-Modem/pjproject-2.11.1/pjlib/include/pj++/scanner.hpp
2021-10-29 14:41:03 -04:00

246 lines
4.5 KiB
C++

/* $Id$ */
/*
* Copyright (C) 2008-2009 Teluu Inc. (http://www.teluu.com)
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __PJPP_SCANNER_HPP__
#define __PJPP_SCANNER_HPP__
#include <pjlib-util/scanner.h>
#include <pj++/string.hpp>
class Pj_Cis;
class Pj_Cis_Buffer;
class Pj_Scanner;
class Pj_Cis_Buffer
{
friend class Pj_Cis;
public:
Pj_Cis_Buffer()
{
pj_cis_buf_init(&buf_);
}
private:
pj_cis_buf_t buf_;
};
class Pj_Cis
{
friend class Pj_Scanner;
public:
Pj_Cis(Pj_Cis_Buffer *buf)
{
pj_cis_init(&buf->buf_, &cis_);
}
Pj_Cis(const Pj_Cis &rhs)
{
pj_cis_dup(&cis_, (pj_cis_t*)&rhs.cis_);
}
void add_range(int start, int end)
{
pj_cis_add_range(&cis_, start, end);
}
void add_alpha()
{
pj_cis_add_alpha(&cis_);
}
void add_num()
{
pj_cis_add_num(&cis_);
}
void add_str(const char *str)
{
pj_cis_add_str(&cis_, str);
}
void add_cis(const Pj_Cis &rhs)
{
pj_cis_add_cis(&cis_, &rhs.cis_);
}
void del_range(int start, int end)
{
pj_cis_del_range(&cis_, start, end);
}
void del_str(const char *str)
{
pj_cis_del_str(&cis_, str);
}
void invert()
{
pj_cis_invert(&cis_);
}
bool match(int c) const
{
return pj_cis_match(&cis_, c) != 0;
}
private:
pj_cis_t cis_;
};
class Pj_Scanner
{
public:
Pj_Scanner() {}
enum
{
SYNTAX_ERROR = 101
};
static void syntax_error_handler_throw_pj(pj_scanner *);
typedef pj_scan_state State;
void init(char *buf, int len, unsigned options=PJ_SCAN_AUTOSKIP_WS,
pj_syn_err_func_ptr callback = &syntax_error_handler_throw_pj)
{
pj_scan_init(&scanner_, buf, len, options, callback);
}
void fini()
{
pj_scan_fini(&scanner_);
}
int eof() const
{
return pj_scan_is_eof(&scanner_);
}
int peek_char() const
{
return *scanner_.curptr;
}
int peek(const Pj_Cis *cis, Pj_String *out)
{
return pj_scan_peek(&scanner_, &cis->cis_, out);
}
int peek_n(pj_size_t len, Pj_String *out)
{
return pj_scan_peek_n(&scanner_, len, out);
}
int peek_until(const Pj_Cis *cis, Pj_String *out)
{
return pj_scan_peek_until(&scanner_, &cis->cis_, out);
}
void get(const Pj_Cis *cis, Pj_String *out)
{
pj_scan_get(&scanner_, &cis->cis_, out);
}
void get_n(unsigned N, Pj_String *out)
{
pj_scan_get_n(&scanner_, N, out);
}
int get_char()
{
return pj_scan_get_char(&scanner_);
}
void get_quote(int begin_quote, int end_quote, Pj_String *out)
{
pj_scan_get_quote(&scanner_, begin_quote, end_quote, out);
}
void get_newline()
{
pj_scan_get_newline(&scanner_);
}
void get_until(const Pj_Cis *cis, Pj_String *out)
{
pj_scan_get_until(&scanner_, &cis->cis_, out);
}
void get_until_ch(int until_ch, Pj_String *out)
{
pj_scan_get_until_ch(&scanner_, until_ch, out);
}
void get_until_chr(const char *spec, Pj_String *out)
{
pj_scan_get_until_chr(&scanner_, spec, out);
}
void advance_n(unsigned N, bool skip_ws=true)
{
pj_scan_advance_n(&scanner_, N, skip_ws);
}
int strcmp(const char *s, int len)
{
return pj_scan_strcmp(&scanner_, s, len);
}
int stricmp(const char *s, int len)
{
return pj_scan_stricmp(&scanner_, s, len);
}
void skip_ws()
{
pj_scan_skip_whitespace(&scanner_);
}
void save_state(State *state) const
{
pj_scan_save_state(&scanner_, state);
}
void restore_state(State *state)
{
pj_scan_restore_state(&scanner_, state);
}
int get_pos_line() const
{
return scanner_.line;
}
int get_pos_col() const
{
return pj_scan_get_col(&scanner_);
}
private:
pj_scanner scanner_;
};
#endif /* __PJPP_SCANNER_HPP__ */