style.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
   5  * Copyright (c) 2014 Tiago Cunha <tcunha@users.sourceforge.net>
   6  *
   7  * Permission to use, copy, modify, and distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  15  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  16  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  17  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 #include <sys/types.h>
  21
  22 #include <ctype.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "tmux.h"
  27
  28 /* Mask for bits not included in style. */
  29 #define STYLE_ATTR_MASK (~0)
  30
  31 /* Default style. */
  32 static struct style style_default = {
  33         { { { ' ' }, 0, 1, 1 }, 0, 0, 8, 8, 0, 0 },
  34         0,
  35
  36         8,
  37         STYLE_ALIGN_DEFAULT,
  38         STYLE_LIST_OFF,
  39
  40         STYLE_RANGE_NONE, 0, "",
  41
  42         STYLE_DEFAULT_BASE
  43 };
  44
  45 /* Set range string. */
  46 static void
  47 style_set_range_string(struct style *sy, const char *s)
  48 {
  49         strlcpy(sy->range_string, s, sizeof sy->range_string);
  50 }
  51
  52 /*
  53  * Parse an embedded style of the form "fg=colour,bg=colour,bright,...".  Note
  54  * that this adds onto the given style, so it must have been initialized
  55  * already.
  56  */
  57 int
  58 style_parse(struct style *sy, const struct grid_cell *base, const char *in)
  59 {
  60         struct style    saved;
  61         const char      delimiters[] = " ,\n", *errstr;
  62         char            tmp[256], *found;
  63         int             value;
  64         size_t          end;
  65         u_int           n;
  66
  67         if (*in == '\0')
  68                 return (0);
  69         style_copy(&saved, sy);
  70
  71         log_debug("%s: %s", __func__, in);
  72         do {
  73                 while (*in != '\0' && strchr(delimiters, *in) != NULL)
  74                         in++;
  75                 if (*in == '\0')
  76                         break;
  77
  78                 end = strcspn(in, delimiters);
  79                 if (end > (sizeof tmp) - 1)
  80                         goto error;
  81                 memcpy(tmp, in, end);
  82                 tmp[end] = '\0';
  83
  84                 log_debug("%s: %s", __func__, tmp);
  85                 if (strcasecmp(tmp, "default") == 0) {
  86                         sy->gc.fg = base->fg;
  87                         sy->gc.bg = base->bg;
  88                         sy->gc.us = base->us;
  89                         sy->gc.attr = base->attr;
  90                         sy->gc.flags = base->flags;
  91                 } else if (strcasecmp(tmp, "ignore") == 0)
  92                         sy->ignore = 1;
  93                 else if (strcasecmp(tmp, "noignore") == 0)
  94                         sy->ignore = 0;
  95                 else if (strcasecmp(tmp, "push-default") == 0)
  96                         sy->default_type = STYLE_DEFAULT_PUSH;
  97                 else if (strcasecmp(tmp, "pop-default") == 0)
  98                         sy->default_type = STYLE_DEFAULT_POP;
  99                 else if (strcasecmp(tmp, "nolist") == 0)
 100                         sy->list = STYLE_LIST_OFF;
 101                 else if (strncasecmp(tmp, "list=", 5) == 0) {
 102                         if (strcasecmp(tmp + 5, "on") == 0)
 103                                 sy->list = STYLE_LIST_ON;
 104                         else if (strcasecmp(tmp + 5, "focus") == 0)
 105                                 sy->list = STYLE_LIST_FOCUS;
 106                         else if (strcasecmp(tmp + 5, "left-marker") == 0)
 107                                 sy->list = STYLE_LIST_LEFT_MARKER;
 108                         else if (strcasecmp(tmp + 5, "right-marker") == 0)
 109                                 sy->list = STYLE_LIST_RIGHT_MARKER;
 110                         else
 111                                 goto error;
 112                 } else if (strcasecmp(tmp, "norange") == 0) {
 113                         sy->range_type = style_default.range_type;
 114                         sy->range_argument = style_default.range_type;
 115                         strlcpy(sy->range_string, style_default.range_string,
 116                             sizeof sy->range_string);
 117                 } else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) {
 118                         found = strchr(tmp + 6, '|');
 119                         if (found != NULL) {
 120                                 *found++ = '\0';
 121                                 if (*found == '\0')
 122                                         goto error;
 123                         }
 124                         if (strcasecmp(tmp + 6, "left") == 0) {
 125                                 if (found != NULL)
 126                                         goto error;
 127                                 sy->range_type = STYLE_RANGE_LEFT;
 128                                 sy->range_argument = 0;
 129                                 style_set_range_string(sy, "");
 130                         } else if (strcasecmp(tmp + 6, "right") == 0) {
 131                                 if (found != NULL)
 132                                         goto error;
 133                                 sy->range_type = STYLE_RANGE_RIGHT;
 134                                 sy->range_argument = 0;
 135                                 style_set_range_string(sy, "");
 136                         } else if (strcasecmp(tmp + 6, "pane") == 0) {
 137                                 if (found == NULL)
 138                                         goto error;
 139                                 if (*found != '%' || found[1] == '\0')
 140                                         goto error;
 141                                 n = strtonum(found + 1, 0, UINT_MAX, &errstr);
 142                                 if (errstr != NULL)
 143                                         goto error;
 144                                 sy->range_type = STYLE_RANGE_PANE;
 145                                 sy->range_argument = n;
 146                                 style_set_range_string(sy, "");
 147                         } else if (strcasecmp(tmp + 6, "window") == 0) {
 148                                 if (found == NULL)
 149                                         goto error;
 150                                 n = strtonum(found, 0, UINT_MAX, &errstr);
 151                                 if (errstr != NULL)
 152                                         goto error;
 153                                 sy->range_type = STYLE_RANGE_WINDOW;
 154                                 sy->range_argument = n;
 155                                 style_set_range_string(sy, "");
 156                         } else if (strcasecmp(tmp + 6, "session") == 0) {
 157                                 if (found == NULL)
 158                                         goto error;
 159                                 if (*found != '$' || found[1] == '\0')
 160                                         goto error;
 161                                 n = strtonum(found + 1, 0, UINT_MAX, &errstr);
 162                                 if (errstr != NULL)
 163                                         goto error;
 164                                 sy->range_type = STYLE_RANGE_SESSION;
 165                                 sy->range_argument = n;
 166                                 style_set_range_string(sy, "");
 167                         } else if (strcasecmp(tmp + 6, "user") == 0) {
 168                                 if (found == NULL)
 169                                         goto error;
 170                                 sy->range_type = STYLE_RANGE_USER;
 171                                 sy->range_argument = 0;
 172                                 style_set_range_string(sy, found);
 173                         }
 174                 } else if (strcasecmp(tmp, "noalign") == 0)
 175                         sy->align = style_default.align;
 176                 else if (end > 6 && strncasecmp(tmp, "align=", 6) == 0) {
 177                         if (strcasecmp(tmp + 6, "left") == 0)
 178                                 sy->align = STYLE_ALIGN_LEFT;
 179                         else if (strcasecmp(tmp + 6, "centre") == 0)
 180                                 sy->align = STYLE_ALIGN_CENTRE;
 181                         else if (strcasecmp(tmp + 6, "right") == 0)
 182                                 sy->align = STYLE_ALIGN_RIGHT;
 183                         else if (strcasecmp(tmp + 6, "absolute-centre") == 0)
 184                                 sy->align = STYLE_ALIGN_ABSOLUTE_CENTRE;
 185                         else
 186                                 goto error;
 187                 } else if (end > 5 && strncasecmp(tmp, "fill=", 5) == 0) {
 188                         if ((value = colour_fromstring(tmp + 5)) == -1)
 189                                 goto error;
 190                         sy->fill = value;
 191                 } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
 192                         if ((value = colour_fromstring(tmp + 3)) == -1)
 193                                 goto error;
 194                         if (*in == 'f' || *in == 'F') {
 195                                 if (value != 8)
 196                                         sy->gc.fg = value;
 197                                 else
 198                                         sy->gc.fg = base->fg;
 199                         } else if (*in == 'b' || *in == 'B') {
 200                                 if (value != 8)
 201                                         sy->gc.bg = value;
 202                                 else
 203                                         sy->gc.bg = base->bg;
 204                         } else
 205                                 goto error;
 206                 } else if (end > 3 && strncasecmp(tmp, "us=", 3) == 0) {
 207                         if ((value = colour_fromstring(tmp + 3)) == -1)
 208                                 goto error;
 209                         if (value != 8)
 210                                 sy->gc.us = value;
 211                         else
 212                                 sy->gc.us = base->us;
 213                 } else if (strcasecmp(tmp, "none") == 0)
 214                         sy->gc.attr = 0;
 215                 else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
 216                         if ((value = attributes_fromstring(tmp + 2)) == -1)
 217                                 goto error;
 218                         sy->gc.attr &= ~value;
 219                 } else {
 220                         if ((value = attributes_fromstring(tmp)) == -1)
 221                                 goto error;
 222                         sy->gc.attr |= value;
 223                 }
 224
 225                 in += end + strspn(in + end, delimiters);
 226         } while (*in != '\0');
 227
 228         return (0);
 229
 230 error:
 231         style_copy(sy, &saved);
 232         return (-1);
 233 }
 234
 235 /* Convert style to a string. */
 236 const char *
 237 style_tostring(struct style *sy)
 238 {
 239         struct grid_cell        *gc = &sy->gc;
 240         int                      off = 0;
 241         const char              *comma = "", *tmp = "";
 242         static char              s[256];
 243         char                     b[21];
 244
 245         *s = '\0';
 246
 247         if (sy->list != STYLE_LIST_OFF) {
 248                 if (sy->list == STYLE_LIST_ON)
 249                         tmp = "on";
 250                 else if (sy->list == STYLE_LIST_FOCUS)
 251                         tmp = "focus";
 252                 else if (sy->list == STYLE_LIST_LEFT_MARKER)
 253                         tmp = "left-marker";
 254                 else if (sy->list == STYLE_LIST_RIGHT_MARKER)
 255                         tmp = "right-marker";
 256                 off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma,
 257                     tmp);
 258                 comma = ",";
 259         }
 260         if (sy->range_type != STYLE_RANGE_NONE) {
 261                 if (sy->range_type == STYLE_RANGE_LEFT)
 262                         tmp = "left";
 263                 else if (sy->range_type == STYLE_RANGE_RIGHT)
 264                         tmp = "right";
 265                 else if (sy->range_type == STYLE_RANGE_PANE) {
 266                         snprintf(b, sizeof b, "pane|%%%u", sy->range_argument);
 267                         tmp = b;
 268                 } else if (sy->range_type == STYLE_RANGE_WINDOW) {
 269                         snprintf(b, sizeof b, "window|%u", sy->range_argument);
 270                         tmp = b;
 271                 } else if (sy->range_type == STYLE_RANGE_SESSION) {
 272                         snprintf(b, sizeof b, "session|$%u",
 273                             sy->range_argument);
 274                         tmp = b;
 275                 } else if (sy->range_type == STYLE_RANGE_USER) {
 276                         snprintf(b, sizeof b, "user|%s", sy->range_string);
 277                         tmp = b;
 278                 }
 279                 off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma,
 280                     tmp);
 281                 comma = ",";
 282         }
 283         if (sy->align != STYLE_ALIGN_DEFAULT) {
 284                 if (sy->align == STYLE_ALIGN_LEFT)
 285                         tmp = "left";
 286                 else if (sy->align == STYLE_ALIGN_CENTRE)
 287                         tmp = "centre";
 288                 else if (sy->align == STYLE_ALIGN_RIGHT)
 289                         tmp = "right";
 290                 else if (sy->align == STYLE_ALIGN_ABSOLUTE_CENTRE)
 291                         tmp = "absolute-centre";
 292                 off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma,
 293                     tmp);
 294                 comma = ",";
 295         }
 296         if (sy->default_type != STYLE_DEFAULT_BASE) {
 297                 if (sy->default_type == STYLE_DEFAULT_PUSH)
 298                         tmp = "push-default";
 299                 else if (sy->default_type == STYLE_DEFAULT_POP)
 300                         tmp = "pop-default";
 301                 off += xsnprintf(s + off, sizeof s - off, "%s%s", comma, tmp);
 302                 comma = ",";
 303         }
 304         if (sy->fill != 8) {
 305                 off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma,
 306                     colour_tostring(sy->fill));
 307                 comma = ",";
 308         }
 309         if (gc->fg != 8) {
 310                 off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma,
 311                     colour_tostring(gc->fg));
 312                 comma = ",";
 313         }
 314         if (gc->bg != 8) {
 315                 off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma,
 316                     colour_tostring(gc->bg));
 317                 comma = ",";
 318         }
 319         if (gc->us != 8) {
 320                 off += xsnprintf(s + off, sizeof s - off, "%sus=%s", comma,
 321                     colour_tostring(gc->us));
 322                 comma = ",";
 323         }
 324         if (gc->attr != 0) {
 325                 xsnprintf(s + off, sizeof s - off, "%s%s", comma,
 326                     attributes_tostring(gc->attr));
 327                 comma = ",";
 328         }
 329
 330         if (*s == '\0')
 331                 return ("default");
 332         return (s);
 333 }
 334
 335 /* Apply a style on top of the given style. */
 336 void
 337 style_add(struct grid_cell *gc, struct options *oo, const char *name,
 338     struct format_tree *ft)
 339 {
 340         struct style            *sy;
 341         struct format_tree      *ft0 = NULL;
 342
 343         if (ft == NULL)
 344                 ft = ft0 = format_create(NULL, NULL, 0, FORMAT_NOJOBS);
 345
 346         sy = options_string_to_style(oo, name, ft);
 347         if (sy == NULL)
 348                 sy = &style_default;
 349         if (sy->gc.fg != 8)
 350                 gc->fg = sy->gc.fg;
 351         if (sy->gc.bg != 8)
 352                 gc->bg = sy->gc.bg;
 353         if (sy->gc.us != 8)
 354                 gc->us = sy->gc.us;
 355         gc->attr |= sy->gc.attr;
 356
 357         if (ft0 != NULL)
 358                 format_free(ft0);
 359 }
 360
 361 /* Apply a style on top of the default style. */
 362 void
 363 style_apply(struct grid_cell *gc, struct options *oo, const char *name,
 364     struct format_tree *ft)
 365 {
 366         memcpy(gc, &grid_default_cell, sizeof *gc);
 367         style_add(gc, oo, name, ft);
 368 }
 369
 370 /* Initialize style from cell. */
 371 void
 372 style_set(struct style *sy, const struct grid_cell *gc)
 373 {
 374         memcpy(sy, &style_default, sizeof *sy);
 375         memcpy(&sy->gc, gc, sizeof sy->gc);
 376 }
 377
 378 /* Copy style. */
 379 void
 380 style_copy(struct style *dst, struct style *src)
 381 {
 382         memcpy(dst, src, sizeof *dst);
 383 }