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_WIDTH_DEFAULT, STYLE_PAD_DEFAULT,
  43
  44         STYLE_DEFAULT_BASE
  45 };
  46
  47 /* Set range string. */
  48 static void
  49 style_set_range_string(struct style *sy, const char *s)
  50 {
  51         strlcpy(sy->range_string, s, sizeof sy->range_string);
  52 }
  53
  54 /*
  55  * Parse an embedded style of the form "fg=colour,bg=colour,bright,...".  Note
  56  * that this adds onto the given style, so it must have been initialized
  57  * already.
  58  */
  59 int
  60 style_parse(struct style *sy, const struct grid_cell *base, const char *in)
  61 {
  62         struct style    saved;
  63         const char      delimiters[] = " ,\n", *errstr;
  64         char            tmp[256], *found;
  65         int             value;
  66         size_t          end;
  67         u_int           n;
  68
  69         if (*in == '\0')
  70                 return (0);
  71         style_copy(&saved, sy);
  72
  73         log_debug("%s: %s", __func__, in);
  74         do {
  75                 while (*in != '\0' && strchr(delimiters, *in) != NULL)
  76                         in++;
  77                 if (*in == '\0')
  78                         break;
  79
  80                 end = strcspn(in, delimiters);
  81                 if (end > (sizeof tmp) - 1)
  82                         goto error;
  83                 memcpy(tmp, in, end);
  84                 tmp[end] = '\0';
  85
  86                 log_debug("%s: %s", __func__, tmp);
  87                 if (strcasecmp(tmp, "default") == 0) {
  88                         sy->gc.fg = base->fg;
  89                         sy->gc.bg = base->bg;
  90                         sy->gc.us = base->us;
  91                         sy->gc.attr = base->attr;
  92                         sy->gc.flags = base->flags;
  93                 } else if (strcasecmp(tmp, "ignore") == 0)
  94                         sy->ignore = 1;
  95                 else if (strcasecmp(tmp, "noignore") == 0)
  96                         sy->ignore = 0;
  97                 else if (strcasecmp(tmp, "push-default") == 0)
  98                         sy->default_type = STYLE_DEFAULT_PUSH;
  99                 else if (strcasecmp(tmp, "pop-default") == 0)
 100                         sy->default_type = STYLE_DEFAULT_POP;
 101                 else if (strcasecmp(tmp, "nolist") == 0)
 102                         sy->list = STYLE_LIST_OFF;
 103                 else if (strncasecmp(tmp, "list=", 5) == 0) {
 104                         if (strcasecmp(tmp + 5, "on") == 0)
 105                                 sy->list = STYLE_LIST_ON;
 106                         else if (strcasecmp(tmp + 5, "focus") == 0)
 107                                 sy->list = STYLE_LIST_FOCUS;
 108                         else if (strcasecmp(tmp + 5, "left-marker") == 0)
 109                                 sy->list = STYLE_LIST_LEFT_MARKER;
 110                         else if (strcasecmp(tmp + 5, "right-marker") == 0)
 111                                 sy->list = STYLE_LIST_RIGHT_MARKER;
 112                         else
 113                                 goto error;
 114                 } else if (strcasecmp(tmp, "norange") == 0) {
 115                         sy->range_type = style_default.range_type;
 116                         sy->range_argument = style_default.range_type;
 117                         strlcpy(sy->range_string, style_default.range_string,
 118                             sizeof sy->range_string);
 119                 } else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) {
 120                         found = strchr(tmp + 6, '|');
 121                         if (found != NULL) {
 122                                 *found++ = '\0';
 123                                 if (*found == '\0')
 124                                         goto error;
 125                         }
 126                         if (strcasecmp(tmp + 6, "left") == 0) {
 127                                 if (found != NULL)
 128                                         goto error;
 129                                 sy->range_type = STYLE_RANGE_LEFT;
 130                                 sy->range_argument = 0;
 131                                 style_set_range_string(sy, "");
 132                         } else if (strcasecmp(tmp + 6, "right") == 0) {
 133                                 if (found != NULL)
 134                                         goto error;
 135                                 sy->range_type = STYLE_RANGE_RIGHT;
 136                                 sy->range_argument = 0;
 137                                 style_set_range_string(sy, "");
 138                         } else if (strcasecmp(tmp + 6, "pane") == 0) {
 139                                 if (found == NULL)
 140                                         goto error;
 141                                 if (*found != '%' || found[1] == '\0')
 142                                         goto error;
 143                                 n = strtonum(found + 1, 0, UINT_MAX, &errstr);
 144                                 if (errstr != NULL)
 145                                         goto error;
 146                                 sy->range_type = STYLE_RANGE_PANE;
 147                                 sy->range_argument = n;
 148                                 style_set_range_string(sy, "");
 149                         } else if (strcasecmp(tmp + 6, "window") == 0) {
 150                                 if (found == NULL)
 151                                         goto error;
 152                                 n = strtonum(found, 0, UINT_MAX, &errstr);
 153                                 if (errstr != NULL)
 154                                         goto error;
 155                                 sy->range_type = STYLE_RANGE_WINDOW;
 156                                 sy->range_argument = n;
 157                                 style_set_range_string(sy, "");
 158                         } else if (strcasecmp(tmp + 6, "session") == 0) {
 159                                 if (found == NULL)
 160                                         goto error;
 161                                 if (*found != '$' || found[1] == '\0')
 162                                         goto error;
 163                                 n = strtonum(found + 1, 0, UINT_MAX, &errstr);
 164                                 if (errstr != NULL)
 165                                         goto error;
 166                                 sy->range_type = STYLE_RANGE_SESSION;
 167                                 sy->range_argument = n;
 168                                 style_set_range_string(sy, "");
 169                         } else if (strcasecmp(tmp + 6, "user") == 0) {
 170                                 if (found == NULL)
 171                                         goto error;
 172                                 sy->range_type = STYLE_RANGE_USER;
 173                                 sy->range_argument = 0;
 174                                 style_set_range_string(sy, found);
 175                         }
 176                 } else if (strcasecmp(tmp, "noalign") == 0)
 177                         sy->align = style_default.align;
 178                 else if (end > 6 && strncasecmp(tmp, "align=", 6) == 0) {
 179                         if (strcasecmp(tmp + 6, "left") == 0)
 180                                 sy->align = STYLE_ALIGN_LEFT;
 181                         else if (strcasecmp(tmp + 6, "centre") == 0)
 182                                 sy->align = STYLE_ALIGN_CENTRE;
 183                         else if (strcasecmp(tmp + 6, "right") == 0)
 184                                 sy->align = STYLE_ALIGN_RIGHT;
 185                         else if (strcasecmp(tmp + 6, "absolute-centre") == 0)
 186                                 sy->align = STYLE_ALIGN_ABSOLUTE_CENTRE;
 187                         else
 188                                 goto error;
 189                 } else if (end > 5 && strncasecmp(tmp, "fill=", 5) == 0) {
 190                         if ((value = colour_fromstring(tmp + 5)) == -1)
 191                                 goto error;
 192                         sy->fill = value;
 193                 } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
 194                         if ((value = colour_fromstring(tmp + 3)) == -1)
 195                                 goto error;
 196                         if (*in == 'f' || *in == 'F') {
 197                                 if (value != 8)
 198                                         sy->gc.fg = value;
 199                                 else
 200                                         sy->gc.fg = base->fg;
 201                         } else if (*in == 'b' || *in == 'B') {
 202                                 if (value != 8)
 203                                         sy->gc.bg = value;
 204                                 else
 205                                         sy->gc.bg = base->bg;
 206                         } else
 207                                 goto error;
 208                 } else if (end > 3 && strncasecmp(tmp, "us=", 3) == 0) {
 209                         if ((value = colour_fromstring(tmp + 3)) == -1)
 210                                 goto error;
 211                         if (value != 8)
 212                                 sy->gc.us = value;
 213                         else
 214                                 sy->gc.us = base->us;
 215                 } else if (strcasecmp(tmp, "none") == 0)
 216                         sy->gc.attr = 0;
 217                 else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
 218                         if ((value = attributes_fromstring(tmp + 2)) == -1)
 219                                 goto error;
 220                         sy->gc.attr &= ~value;
 221                 } else if (end > 6 && strncasecmp(tmp, "width=", 6) == 0) {
 222                         n = strtonum(tmp + 6, 0, UINT_MAX, &errstr);
 223                         if (errstr != NULL)
 224                                 goto error;
 225                         sy->width = (int)n;
 226                 } else if (end > 4 && strncasecmp(tmp, "pad=", 4) == 0) {
 227                         n = strtonum(tmp + 4, 0, UINT_MAX, &errstr);
 228                         if (errstr != NULL)
 229                                 goto error;
 230                         sy->pad = (int)n;
 231                 } else {
 232                         if ((value = attributes_fromstring(tmp)) == -1)
 233                                 goto error;
 234                         sy->gc.attr |= value;
 235                 }
 236
 237                 in += end + strspn(in + end, delimiters);
 238         } while (*in != '\0');
 239
 240         return (0);
 241
 242 error:
 243         style_copy(sy, &saved);
 244         return (-1);
 245 }
 246
 247 /* Convert style to a string. */
 248 const char *
 249 style_tostring(struct style *sy)
 250 {
 251         struct grid_cell        *gc = &sy->gc;
 252         int                      off = 0;
 253         const char              *comma = "", *tmp = "";
 254         static char              s[256];
 255         char                     b[21];
 256
 257         *s = '\0';
 258
 259         if (sy->list != STYLE_LIST_OFF) {
 260                 if (sy->list == STYLE_LIST_ON)
 261                         tmp = "on";
 262                 else if (sy->list == STYLE_LIST_FOCUS)
 263                         tmp = "focus";
 264                 else if (sy->list == STYLE_LIST_LEFT_MARKER)
 265                         tmp = "left-marker";
 266                 else if (sy->list == STYLE_LIST_RIGHT_MARKER)
 267                         tmp = "right-marker";
 268                 off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma,
 269                     tmp);
 270                 comma = ",";
 271         }
 272         if (sy->range_type != STYLE_RANGE_NONE) {
 273                 if (sy->range_type == STYLE_RANGE_LEFT)
 274                         tmp = "left";
 275                 else if (sy->range_type == STYLE_RANGE_RIGHT)
 276                         tmp = "right";
 277                 else if (sy->range_type == STYLE_RANGE_PANE) {
 278                         snprintf(b, sizeof b, "pane|%%%u", sy->range_argument);
 279                         tmp = b;
 280                 } else if (sy->range_type == STYLE_RANGE_WINDOW) {
 281                         snprintf(b, sizeof b, "window|%u", sy->range_argument);
 282                         tmp = b;
 283                 } else if (sy->range_type == STYLE_RANGE_SESSION) {
 284                         snprintf(b, sizeof b, "session|$%u",
 285                             sy->range_argument);
 286                         tmp = b;
 287                 } else if (sy->range_type == STYLE_RANGE_USER) {
 288                         snprintf(b, sizeof b, "user|%s", sy->range_string);
 289                         tmp = b;
 290                 }
 291                 off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma,
 292                     tmp);
 293                 comma = ",";
 294         }
 295         if (sy->align != STYLE_ALIGN_DEFAULT) {
 296                 if (sy->align == STYLE_ALIGN_LEFT)
 297                         tmp = "left";
 298                 else if (sy->align == STYLE_ALIGN_CENTRE)
 299                         tmp = "centre";
 300                 else if (sy->align == STYLE_ALIGN_RIGHT)
 301                         tmp = "right";
 302                 else if (sy->align == STYLE_ALIGN_ABSOLUTE_CENTRE)
 303                         tmp = "absolute-centre";
 304                 off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma,
 305                     tmp);
 306                 comma = ",";
 307         }
 308         if (sy->default_type != STYLE_DEFAULT_BASE) {
 309                 if (sy->default_type == STYLE_DEFAULT_PUSH)
 310                         tmp = "push-default";
 311                 else if (sy->default_type == STYLE_DEFAULT_POP)
 312                         tmp = "pop-default";
 313                 off += xsnprintf(s + off, sizeof s - off, "%s%s", comma, tmp);
 314                 comma = ",";
 315         }
 316         if (sy->fill != 8) {
 317                 off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma,
 318                     colour_tostring(sy->fill));
 319                 comma = ",";
 320         }
 321         if (gc->fg != 8) {
 322                 off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma,
 323                     colour_tostring(gc->fg));
 324                 comma = ",";
 325         }
 326         if (gc->bg != 8) {
 327                 off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma,
 328                     colour_tostring(gc->bg));
 329                 comma = ",";
 330         }
 331         if (gc->us != 8) {
 332                 off += xsnprintf(s + off, sizeof s - off, "%sus=%s", comma,
 333                     colour_tostring(gc->us));
 334                 comma = ",";
 335         }
 336         if (gc->attr != 0) {
 337                 xsnprintf(s + off, sizeof s - off, "%s%s", comma,
 338                     attributes_tostring(gc->attr));
 339                 comma = ",";
 340         }
 341         if (sy->width >= 0) {
 342                 xsnprintf(s + off, sizeof s - off, "%swidth=%u", comma,
 343                     sy->width);
 344                 comma = ",";
 345         }
 346         if (sy->pad >= 0) {
 347                 xsnprintf(s + off, sizeof s - off, "%spad=%u", comma,
 348                     sy->pad);
 349                 comma = ",";
 350         }
 351         if (*s == '\0')
 352                 return ("default");
 353         return (s);
 354 }
 355
 356 /* Apply a style on top of the given style. */
 357 void
 358 style_add(struct grid_cell *gc, struct options *oo, const char *name,
 359     struct format_tree *ft)
 360 {
 361         struct style            *sy;
 362         struct format_tree      *ft0 = NULL;
 363
 364         if (ft == NULL)
 365                 ft = ft0 = format_create(NULL, NULL, 0, FORMAT_NOJOBS);
 366
 367         sy = options_string_to_style(oo, name, ft);
 368         if (sy == NULL)
 369                 sy = &style_default;
 370         if (sy->gc.fg != 8)
 371                 gc->fg = sy->gc.fg;
 372         if (sy->gc.bg != 8)
 373                 gc->bg = sy->gc.bg;
 374         if (sy->gc.us != 8)
 375                 gc->us = sy->gc.us;
 376         gc->attr |= sy->gc.attr;
 377
 378         if (ft0 != NULL)
 379                 format_free(ft0);
 380 }
 381
 382 /* Apply a style on top of the default style. */
 383 void
 384 style_apply(struct grid_cell *gc, struct options *oo, const char *name,
 385     struct format_tree *ft)
 386 {
 387         memcpy(gc, &grid_default_cell, sizeof *gc);
 388         style_add(gc, oo, name, ft);
 389 }
 390
 391 /* Initialize style from cell. */
 392 void
 393 style_set(struct style *sy, const struct grid_cell *gc)
 394 {
 395         memcpy(sy, &style_default, sizeof *sy);
 396         memcpy(&sy->gc, gc, sizeof sy->gc);
 397 }
 398
 399 /* Copy style. */
 400 void
 401 style_copy(struct style *dst, struct style *src)
 402 {
 403         memcpy(dst, src, sizeof *dst);
 404 }
 405
 406 void
 407 style_set_scrollbar_style_from_option(struct style *sb_style, struct options *oo)
 408 {
 409         struct style    *sy;
 410
 411         sy = options_string_to_style(oo, "pane-scrollbars-style", NULL);
 412         if (sy == NULL) {
 413                 style_set(sb_style, &grid_default_cell);
 414                 sb_style->width = PANE_SCROLLBARS_DEFAULT_WIDTH;
 415                 sb_style->pad = PANE_SCROLLBARS_DEFAULT_PADDING;
 416                 utf8_set(&sb_style->gc.data, PANE_SCROLLBARS_CHARACTER);
 417         } else {
 418                 style_copy(sb_style, sy);
 419                 if (sb_style->width < 1)
 420                         sb_style->width = PANE_SCROLLBARS_DEFAULT_WIDTH;
 421                 if (sb_style->pad < 0)
 422                         sb_style->pad = PANE_SCROLLBARS_DEFAULT_PADDING;
 423                 utf8_set(&sb_style->gc.data, PANE_SCROLLBARS_CHARACTER);
 424         }
 425 }