style.c - tmux - Rivoreo Source Code Repositories

 /* $OpenBSD$ */

 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
  * Copyright (c) 2014 Tiago Cunha <tcunha@users.sourceforge.net>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF MIND, 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.
  */

 #include <sys/types.h>

 #include <ctype.h>
 #include <stdlib.h>
 #include <string.h>

 #include "tmux.h"

 /* Mask for bits not included in style. */
 #define STYLE_ATTR_MASK (~GRID_ATTR_CHARSET)

 /* Default style. */
 static struct style style_default = {
 	{ 0, 0, 8, 8, { { ' ' }, 0, 1, 1 } },

 	STYLE_ALIGN_DEFAULT,
 	STYLE_LIST_OFF,

 	STYLE_RANGE_NONE, 0
 };

 /*
  * Parse an embedded style of the form "fg=colour,bg=colour,bright,...".
  * Note that this adds onto the given style, so it must have been initialized
  * alredy.
  */
 int
 style_parse(struct style *sy, const struct grid_cell *base, const char *in)
 {
 	struct style	saved;
 	const char	delimiters[] = " ,", *cp;
 	char		tmp[256], *found;
 	int		value;
 	size_t		end;

 	if (*in == '\0')
 		return (0);
 	style_copy(&saved, sy);

 	do {
 		while (*in != '\0' && strchr(delimiters, *in) != NULL) {
 			in++;
 			end--;
 		}
 		if (*in == '\0')
 			break;

 		end = strcspn(in, delimiters);
 		if (end > (sizeof tmp) - 1)
 			goto error;
 		memcpy(tmp, in, end);
 		tmp[end] = '\0';

 		if (strcasecmp(tmp, "default") == 0) {
 			sy->gc.fg = base->fg;
 			sy->gc.bg = base->bg;
 			sy->gc.attr = base->attr;
 			sy->gc.flags = base->flags;
 		} else if (strcasecmp(tmp, "nolist") == 0)
 			sy->list = STYLE_LIST_OFF;
 		else if (strncasecmp(tmp, "list=", 5) == 0) {
 			if (strcasecmp(tmp + 5, "on") == 0)
 				sy->list = STYLE_LIST_ON;
 			else if (strcasecmp(tmp + 5, "focus") == 0)
 				sy->list = STYLE_LIST_FOCUS;
 			else if (strcasecmp(tmp + 5, "left-marker") == 0)
 				sy->list = STYLE_LIST_LEFT_MARKER;
 			else if (strcasecmp(tmp + 5, "right-marker") == 0)
 				sy->list = STYLE_LIST_RIGHT_MARKER;
 			else
 				goto error;
 		} else if (strcasecmp(tmp, "norange") == 0) {
 			sy->range_type = style_default.range_type;
 			sy->range_argument = style_default.range_type;
 		} else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) {
 			found = strchr(tmp + 6, '|');
 			if (found != NULL) {
 				*found++ = '\0';
 				if (*found == '\0')
 					goto error;
 				for (cp = found; *cp != '\0'; cp++) {
 					if (!isdigit((u_char)*cp))
 						goto error;
 				}
 			}
 			if (strcasecmp(tmp + 6, "left") == 0) {
 				if (found != NULL)
 					goto error;
 				sy->range_type = STYLE_RANGE_LEFT;
 				sy->range_argument = 0;
 			} else if (strcasecmp(tmp + 6, "right") == 0) {
 				if (found != NULL)
 					goto error;
 				sy->range_type = STYLE_RANGE_RIGHT;
 				sy->range_argument = 0;
 			} else if (strcasecmp(tmp + 6, "window") == 0) {
 				if (found == NULL)
 					goto error;
 				sy->range_type = STYLE_RANGE_WINDOW;
 				sy->range_argument = atoi(found);
 			}
 		} else if (strcasecmp(tmp, "noalign") == 0)
 			sy->align = style_default.align;
 		else if (end > 6 && strncasecmp(tmp, "align=", 6) == 0) {
 			if (strcasecmp(tmp + 6, "left") == 0)
 				sy->align = STYLE_ALIGN_LEFT;
 			else if (strcasecmp(tmp + 6, "centre") == 0)
 				sy->align = STYLE_ALIGN_CENTRE;
 			else if (strcasecmp(tmp + 6, "right") == 0)
 				sy->align = STYLE_ALIGN_RIGHT;
 			else
 				goto error;
 		} else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
 			if ((value = colour_fromstring(tmp + 3)) == -1)
 				goto error;
 			if (*in == 'f' || *in == 'F') {
 				if (value != 8)
 					sy->gc.fg = value;
 				else
 					sy->gc.fg = base->fg;
 			} else if (*in == 'b' || *in == 'B') {
 				if (value != 8)
 					sy->gc.bg = value;
 				else
 					sy->gc.bg = base->bg;
 			} else
 				goto error;
 		} else if (strcasecmp(tmp, "none") == 0)
 			sy->gc.attr = 0;
 		else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
 			if ((value = attributes_fromstring(tmp + 2)) == -1)
 				goto error;
 			sy->gc.attr &= ~value;
 		} else {
 			if ((value = attributes_fromstring(tmp)) == -1)
 				goto error;
 			sy->gc.attr |= value;
 		}

 		in += end + strspn(in + end, delimiters);
 	} while (*in != '\0');

 	return (0);

 error:
 	style_copy(sy, &saved);
 	return (-1);
 }

 /* Convert style to a string. */
 const char *
 style_tostring(struct style *sy)
 {
 	struct grid_cell	*gc = &sy->gc;
 	int			 off = 0;
 	const char		*comma = "", *tmp;
 	static char		 s[256];
 	char			 b[16];

 	*s = '\0';

 	if (sy->list != STYLE_LIST_OFF) {
 		if (sy->list == STYLE_LIST_ON)
 			tmp = "on";
 		else if (sy->list == STYLE_LIST_FOCUS)
 			tmp = "focus";
 		else if (sy->list == STYLE_LIST_LEFT_MARKER)
 			tmp = "left-marker";
 		else if (sy->list == STYLE_LIST_RIGHT_MARKER)
 			tmp = "right-marker";
 		off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma,
 		    tmp);
 		comma = ",";
 	}
 	if (sy->range_type != STYLE_RANGE_NONE) {
 		if (sy->range_type == STYLE_RANGE_LEFT)
 			tmp = "left";
 		else if (sy->range_type == STYLE_RANGE_RIGHT)
 			tmp = "right";
 		else if (sy->range_type == STYLE_RANGE_WINDOW) {
 			snprintf(b, sizeof b, "window|%u", sy->range_argument);
 			tmp = b;
 		}
 		off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma,
 		    tmp);
 		comma = ",";
 	}
 	if (sy->align != STYLE_ALIGN_DEFAULT) {
 		if (sy->align == STYLE_ALIGN_LEFT)
 			tmp = "left";
 		else if (sy->align == STYLE_ALIGN_CENTRE)
 			tmp = "centre";
 		else if (sy->align == STYLE_ALIGN_RIGHT)
 			tmp = "right";
 		off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma,
 		    tmp);
 		comma = ",";
 	}
 	if (gc->fg != 8) {
 		off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma,
 		    colour_tostring(gc->fg));
 		comma = ",";
 	}
 	if (gc->bg != 8) {
 		off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma,
 		    colour_tostring(gc->bg));
 		comma = ",";
 	}
 	if (gc->attr != 0 && gc->attr != GRID_ATTR_CHARSET) {
 		xsnprintf(s + off, sizeof s - off, "%s%s", comma,
 		    attributes_tostring(gc->attr));
 		comma = ",";
 	}

 	if (*s == '\0')
 		return ("default");
 	return (s);
 }

 /* Apply a style. */
 void
 style_apply(struct grid_cell *gc, struct options *oo, const char *name)
 {
 	struct style	*sy;

 	memcpy(gc, &grid_default_cell, sizeof *gc);
 	sy = options_get_style(oo, name);
 	gc->fg = sy->gc.fg;
 	gc->bg = sy->gc.bg;
 	gc->attr |= sy->gc.attr;
 }

 /* Apply a style, updating if default. */
 void
 style_apply_update(struct grid_cell *gc, struct options *oo, const char *name)
 {
 	struct style	*sy;

 	sy = options_get_style(oo, name);
 	if (sy->gc.fg != 8)
 		gc->fg = sy->gc.fg;
 	if (sy->gc.bg != 8)
 		gc->bg = sy->gc.bg;
 	if (sy->gc.attr != 0)
 		gc->attr |= sy->gc.attr;
 }

 /* Initialize style from cell. */
 void
 style_set(struct style *sy, const struct grid_cell *gc)
 {
 	memcpy(sy, &style_default, sizeof *sy);
 	memcpy(&sy->gc, gc, sizeof sy->gc);
 }

 /* Copy style. */
 void
 style_copy(struct style *dst, struct style *src)
 {
 	memcpy(dst, src, sizeof *dst);
 }

 /* Check if two styles are (visibly) the same. */
 int
 style_equal(struct style *sy1, struct style *sy2)
 {
 	struct grid_cell	*gc1 = &sy1->gc;
 	struct grid_cell	*gc2 = &sy2->gc;

 	if (gc1->fg != gc2->fg)
 		return (0);
 	if (gc1->bg != gc2->bg)
 		return (0);
 	if ((gc1->attr & STYLE_ATTR_MASK) != (gc2->attr & STYLE_ATTR_MASK))
 		return (0);
 	if (sy1->align != sy2->align)
 		return (0);
 	return (1);
 }

 /* Is this style default? */
 int
 style_is_default(struct style *sy)
 {
 	return (style_equal(sy, &style_default));
 }
	/* $OpenBSD$ */

	/*
	* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
	* Copyright (c) 2014 Tiago Cunha <tcunha@users.sourceforge.net>
	*
	* Permission to use, copy, modify, and distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.
	*
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF MIND, 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.
	*/

	#include <sys/types.h>

	#include <ctype.h>
	#include <stdlib.h>
	#include <string.h>

	#include "tmux.h"

	/* Mask for bits not included in style. */
	#define STYLE_ATTR_MASK (~GRID_ATTR_CHARSET)

	/* Default style. */
	static struct style style_default = {
	{ 0, 0, 8, 8, { { ' ' }, 0, 1, 1 } },

	STYLE_ALIGN_DEFAULT,
	STYLE_LIST_OFF,

	STYLE_RANGE_NONE, 0
	};

	/*
	* Parse an embedded style of the form "fg=colour,bg=colour,bright,...".
	* Note that this adds onto the given style, so it must have been initialized
	* alredy.
	*/
	int
	style_parse(struct style sy, const struct grid_cell base, const char *in)
	{
	struct style saved;
	const char delimiters[] = " ,", *cp;
	char tmp[256], *found;
	int value;
	size_t end;

	if (*in == '\0')
	return (0);
	style_copy(&saved, sy);

	do {
	while (in != '\0' && strchr(delimiters, in) != NULL) {
	in++;
	end--;
	}
	if (*in == '\0')
	break;

	end = strcspn(in, delimiters);
	if (end > (sizeof tmp) - 1)
	goto error;
	memcpy(tmp, in, end);
	tmp[end] = '\0';

	if (strcasecmp(tmp, "default") == 0) {
	sy->gc.fg = base->fg;
	sy->gc.bg = base->bg;
	sy->gc.attr = base->attr;
	sy->gc.flags = base->flags;
	} else if (strcasecmp(tmp, "nolist") == 0)
	sy->list = STYLE_LIST_OFF;
	else if (strncasecmp(tmp, "list=", 5) == 0) {
	if (strcasecmp(tmp + 5, "on") == 0)
	sy->list = STYLE_LIST_ON;
	else if (strcasecmp(tmp + 5, "focus") == 0)
	sy->list = STYLE_LIST_FOCUS;
	else if (strcasecmp(tmp + 5, "left-marker") == 0)
	sy->list = STYLE_LIST_LEFT_MARKER;
	else if (strcasecmp(tmp + 5, "right-marker") == 0)
	sy->list = STYLE_LIST_RIGHT_MARKER;
	else
	goto error;
	} else if (strcasecmp(tmp, "norange") == 0) {
	sy->range_type = style_default.range_type;
	sy->range_argument = style_default.range_type;
	} else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) {
	found = strchr(tmp + 6, '\|');
	if (found != NULL) {
	*found++ = '\0';
	if (*found == '\0')
	goto error;
	for (cp = found; *cp != '\0'; cp++) {
	if (!isdigit((u_char)*cp))
	goto error;
	}
	}
	if (strcasecmp(tmp + 6, "left") == 0) {
	if (found != NULL)
	goto error;
	sy->range_type = STYLE_RANGE_LEFT;
	sy->range_argument = 0;
	} else if (strcasecmp(tmp + 6, "right") == 0) {
	if (found != NULL)
	goto error;
	sy->range_type = STYLE_RANGE_RIGHT;
	sy->range_argument = 0;
	} else if (strcasecmp(tmp + 6, "window") == 0) {
	if (found == NULL)
	goto error;
	sy->range_type = STYLE_RANGE_WINDOW;
	sy->range_argument = atoi(found);
	}
	} else if (strcasecmp(tmp, "noalign") == 0)
	sy->align = style_default.align;
	else if (end > 6 && strncasecmp(tmp, "align=", 6) == 0) {
	if (strcasecmp(tmp + 6, "left") == 0)
	sy->align = STYLE_ALIGN_LEFT;
	else if (strcasecmp(tmp + 6, "centre") == 0)
	sy->align = STYLE_ALIGN_CENTRE;
	else if (strcasecmp(tmp + 6, "right") == 0)
	sy->align = STYLE_ALIGN_RIGHT;
	else
	goto error;
	} else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
	if ((value = colour_fromstring(tmp + 3)) == -1)
	goto error;
	if (in == 'f' \|\| in == 'F') {
	if (value != 8)
	sy->gc.fg = value;
	else
	sy->gc.fg = base->fg;
	} else if (in == 'b' \|\| in == 'B') {
	if (value != 8)
	sy->gc.bg = value;
	else
	sy->gc.bg = base->bg;
	} else
	goto error;
	} else if (strcasecmp(tmp, "none") == 0)
	sy->gc.attr = 0;
	else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
	if ((value = attributes_fromstring(tmp + 2)) == -1)
	goto error;
	sy->gc.attr &= ~value;
	} else {
	if ((value = attributes_fromstring(tmp)) == -1)
	goto error;
	sy->gc.attr \|= value;
	}

	in += end + strspn(in + end, delimiters);
	} while (*in != '\0');

	return (0);

	error:
	style_copy(sy, &saved);
	return (-1);
	}

	/* Convert style to a string. */
	const char *
	style_tostring(struct style *sy)
	{
	struct grid_cell *gc = &sy->gc;
	int off = 0;
	const char comma = "", tmp;
	static char s[256];
	char b[16];

	*s = '\0';

	if (sy->list != STYLE_LIST_OFF) {
	if (sy->list == STYLE_LIST_ON)
	tmp = "on";
	else if (sy->list == STYLE_LIST_FOCUS)
	tmp = "focus";
	else if (sy->list == STYLE_LIST_LEFT_MARKER)
	tmp = "left-marker";
	else if (sy->list == STYLE_LIST_RIGHT_MARKER)
	tmp = "right-marker";
	off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma,
	tmp);
	comma = ",";
	}
	if (sy->range_type != STYLE_RANGE_NONE) {
	if (sy->range_type == STYLE_RANGE_LEFT)
	tmp = "left";
	else if (sy->range_type == STYLE_RANGE_RIGHT)
	tmp = "right";
	else if (sy->range_type == STYLE_RANGE_WINDOW) {
	snprintf(b, sizeof b, "window\|%u", sy->range_argument);
	tmp = b;
	}
	off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma,
	tmp);
	comma = ",";
	}
	if (sy->align != STYLE_ALIGN_DEFAULT) {
	if (sy->align == STYLE_ALIGN_LEFT)
	tmp = "left";
	else if (sy->align == STYLE_ALIGN_CENTRE)
	tmp = "centre";
	else if (sy->align == STYLE_ALIGN_RIGHT)
	tmp = "right";
	off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma,
	tmp);
	comma = ",";
	}
	if (gc->fg != 8) {
	off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma,
	colour_tostring(gc->fg));
	comma = ",";
	}
	if (gc->bg != 8) {
	off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma,
	colour_tostring(gc->bg));
	comma = ",";
	}
	if (gc->attr != 0 && gc->attr != GRID_ATTR_CHARSET) {
	xsnprintf(s + off, sizeof s - off, "%s%s", comma,
	attributes_tostring(gc->attr));
	comma = ",";
	}

	if (*s == '\0')
	return ("default");
	return (s);
	}

	/* Apply a style. */
	void
	style_apply(struct grid_cell gc, struct options oo, const char *name)
	{
	struct style *sy;

	memcpy(gc, &grid_default_cell, sizeof *gc);
	sy = options_get_style(oo, name);
	gc->fg = sy->gc.fg;
	gc->bg = sy->gc.bg;
	gc->attr \|= sy->gc.attr;
	}

	/* Apply a style, updating if default. */
	void
	style_apply_update(struct grid_cell gc, struct options oo, const char *name)
	{
	struct style *sy;

	sy = options_get_style(oo, name);
	if (sy->gc.fg != 8)
	gc->fg = sy->gc.fg;
	if (sy->gc.bg != 8)
	gc->bg = sy->gc.bg;
	if (sy->gc.attr != 0)
	gc->attr \|= sy->gc.attr;
	}

	/* Initialize style from cell. */
	void
	style_set(struct style sy, const struct grid_cell gc)
	{
	memcpy(sy, &style_default, sizeof *sy);
	memcpy(&sy->gc, gc, sizeof sy->gc);
	}

	/* Copy style. */
	void
	style_copy(struct style dst, struct style src)
	{
	memcpy(dst, src, sizeof *dst);
	}

	/* Check if two styles are (visibly) the same. */
	int
	style_equal(struct style sy1, struct style sy2)
	{
	struct grid_cell *gc1 = &sy1->gc;
	struct grid_cell *gc2 = &sy2->gc;

	if (gc1->fg != gc2->fg)
	return (0);
	if (gc1->bg != gc2->bg)
	return (0);
	if ((gc1->attr & STYLE_ATTR_MASK) != (gc2->attr & STYLE_ATTR_MASK))
	return (0);
	if (sy1->align != sy2->align)
	return (0);
	return (1);
	}

	/* Is this style default? */
	int
	style_is_default(struct style *sy)
	{
	return (style_equal(sy, &style_default));
	}