/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2005, Digium, Inc.
 *
 * Mark Spencer <markster@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*! \file
 * \brief Handy terminal functions for vt* terms
 */

#ifndef _ASTERISK_TERM_H
#define _ASTERISK_TERM_H

#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif

#define ESC 0x1b

/*! \name Terminal Attributes
*/
/*@{ */
#define ATTR_RESET	0
#define ATTR_BRIGHT	1
#define ATTR_DIM	2
#define ATTR_UNDER	4
#define ATTR_BLINK	5
#define ATTR_REVER	7
#define ATTR_HIDDEN	8
/*@} */

/*! \name Terminal Colors
*/
/*@{ */
#define COLOR_BLACK     30
#define COLOR_GRAY      (30 | 128)
#define COLOR_RED       31
#define COLOR_BRRED     (31 | 128)
#define COLOR_GREEN     32
#define COLOR_BRGREEN   (32 | 128)
#define COLOR_BROWN     33
#define COLOR_YELLOW    (33 | 128)
#define COLOR_BLUE      34
#define COLOR_BRBLUE    (34 | 128)
#define COLOR_MAGENTA   35
#define COLOR_BRMAGENTA (35 | 128)
#define COLOR_CYAN      36
#define COLOR_BRCYAN    (36 | 128)
#define COLOR_WHITE     37
#define COLOR_BRWHITE   (37 | 128)
/*@} */

/*! \brief Shortcut macros for coloring a set of text
 */
#define COLORIZE_FMT	"%s%s%s"
#define COLORIZE(fg, bg, str)	ast_term_color(fg,bg),str,ast_term_reset()
/*! \brief Maximum number of characters needed for a color escape sequence,
 *         and another one for a trailing reset, plus a null char */
#define AST_TERM_MAX_ESCAPE_CHARS   23
#define AST_TERM_MAX_ROTATING_BUFFERS	15

/*! \brief Colorize a specified string by adding terminal color codes
 *
 * \param outbuf Result buffer
 * \param inbuf Starting string
 * \param fgcolor Foreground color, specified as one of the constants in include/asterisk/term.h.  Use '0' if the want the normal terminal foreground color.
 * \param bgcolor Background color, specified as one of the constants in include/asterisk/term.h.  Use '0' if you want the normal terminal background color.
 * \param maxout Maximum size of outbuf
 *
 * \return outbuf
 *
 * \deprecated Due to the necessity of pre-sizing a result buffer, new code should avoid using this function in preference to ast_term_color_code() or ast_term_color().
 */
char *term_color(char *outbuf, const char *inbuf, int fgcolor, int bgcolor, int maxout);

/*!
 * \brief Append a color sequence to an ast_str
 *
 * \param str The string to append to
 * \param fgcolor foreground color
 * \param bgcolor background color
 *
 * \retval 0 success
 * \retval -1 failure
 */
int ast_term_color_code(struct ast_str **str, int fgcolor, int bgcolor);

/*!
 * \brief Return a color sequence string
 * \param fgcolor foreground color
 * \param bgcolor background color
 * \note This function may be called up to 15 times within the arguments to a single function without the danger of overwriting a common buffer.
 *
 * \return A color sequence string, or the empty string, on error
 */
const char *ast_term_color(int fgcolor, int bgcolor);

/*!
 * \brief Returns the terminal reset code
 * \return String which, when sent to the screen, resets the terminal colors
 */
const char *ast_term_reset(void);

/*!
 * \brief Write a color sequence to a string
 *
 * \param outbuf the location to write to
 * \param fgcolor foreground color
 * \param bgcolor background color
 * \param maxout maximum number of characters to write
 * \deprecated You should use ast_term_color_code or ast_term_color, instead.
 *
 * \return outbuf
 */
char *term_color_code(char *outbuf, int fgcolor, int bgcolor, int maxout);

/*!
 * \brief Remove colorings from a specified string
 * \param outbuf the location to write to
 * \param inbuf the original string
 * \param maxout the available size of outbuf
 * \return outbuf
 */
char *term_strip(char *outbuf, const char *inbuf, int maxout);

void term_filter_escapes(char *line);

const char *term_end(void);

const char *term_quit(void);

#if defined(__cplusplus) || defined(c_plusplus)
}
#endif

#endif /* _ASTERISK_TERM_H */
