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", *cp;
  62         char            tmp[256], *found;
  63         int             value;
  64         size_t          end;
  65
  66         if (*in == '\0')
  67                 return (0);
  68         style_copy(&saved, sy);
  69
  70         log_debug("%s: %s", __func__, in);
  71         do {
  72                 while (*in != '\0' && strchr(delimiters, *in) != NULL)
  73                         in++;
  74                 if (*in == '\0')
  75                         break;
  76
  77                 end = strcspn(in, delimiters);
  78                 if (end > (sizeof tmp) - 1)
  79                         goto error;
  80                 memcpy(tmp, in, end);
  81                 tmp[end] = '\0';
  82
  83                 log_debug("%s: %s", __func__, tmp);
  84                 if (strcasecmp(tmp, "default") == 0) {
  85                         sy->gc.fg = base->fg;
  86                         sy->gc.bg = base->bg;
  87                         sy->gc.us = base->us;
  88                         sy->gc.attr = base->attr;
  89                         sy->gc.flags = base->flags;
  90                 } else if (strcasecmp(tmp, "ignore") == 0)
  91                         sy->ignore = 1;
  92                 else if (strcasecmp(tmp, "noignore") == 0)
  93                         sy->ignore = 0;
  94                 else if (strcasecmp(tmp, "push-default") == 0)
  95                         sy->default_type = STYLE_DEFAULT_PUSH;
  96                 else if (strcasecmp(tmp, "pop-default") == 0)
  97                         sy->default_type = STYLE_DEFAULT_POP;
  98                 else if (strcasecmp(tmp, "nolist") == 0)
  99                         sy->list = STYLE_LIST_OFF;
 100                 else if (strncasecmp(tmp, "list=", 5) == 0) {
 101                         if (strcasecmp(tmp + 5, "on") == 0)
 102                                 sy->list = STYLE_LIST_ON;
 103                         else if (strcasecmp(tmp + 5, "focus") == 0)
 104                                 sy->list = STYLE_LIST_FOCUS;
 105                         else if (strcasecmp(tmp + 5, "left-marker") == 0)
 106                                 sy->list = STYLE_LIST_LEFT_MARKER;
 107                         else if (strcasecmp(tmp + 5, "right-marker") == 0)
 108                                 sy->list = STYLE_LIST_RIGHT_MARKER;
 109                         else
 110                                 goto error;
 111                 } else if (strcasecmp(tmp, "norange") == 0) {
 112                         sy->range_type = style_default.range_type;
 113                         sy->range_argument = style_default.range_type;
 114                         strlcpy(sy->range_string, style_default.range_string,
 115                             sizeof sy->range_string);
 116                 } else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) {
 117                         found = strchr(tmp + 6, '|');
 118                         if (found != NULL) {
 119                                 *found++ = '\0';
 120                                 if (*found == '\0')
 121                                         goto error;
 122                         }
 123                         if (strcasecmp(tmp + 6, "left") == 0) {
 124                                 if (found != NULL)
 125                                         goto error;
 126                                 sy->range_type = STYLE_RANGE_LEFT;
 127                                 sy->range_argument = 0;
 128                                 style_set_range_string(sy, "");
 129                         } else if (strcasecmp(tmp + 6, "right") == 0) {
 130                                 if (found != NULL)
 131                                         goto error;
 132                                 sy->range_type = STYLE_RANGE_RIGHT;
 133                                 sy->range_argument = 0;
 134                                 style_set_range_string(sy, "");
 135                         } else if (strcasecmp(tmp + 6, "pane") == 0) {
 136                                 if (found == NULL)
 137                                         goto error;
 138                                 if (*found != '%' || found[1] == '\0')
 139                                         goto error;
 140                                 for (cp = found + 1; *cp != '\0'; cp++) {
 141                                         if (!isdigit((u_char)*cp))
 142                                                 goto error;
 143                                 }
 144                                 sy->range_type = STYLE_RANGE_PANE;
 145                                 sy->range_argument = atoi(found + 1);
 146                                 style_set_range_string(sy, "");
 147                         } else if (strcasecmp(tmp + 6, "window") == 0) {
 148                                 if (found == NULL)
 149                                         goto error;
 150                                 for (cp = found; *cp != '\0'; cp++) {
 151                                         if (!isdigit((u_char)*cp))
 152                                                 goto error;
 153                                 }
 154                                 sy->range_type = STYLE_RANGE_WINDOW;
 155                                 sy->range_argument = atoi(found);
 156                                 style_set_range_string(sy, "");
 157                         } else if (strcasecmp(tmp + 6, "session") == 0) {
 158                                 if (found == NULL)
 159                                         goto error;
 160                                 if (*found != '$' || found[1] == '\0')
 161                                         goto error;
 162                                 for (cp = found + 1; *cp != '\0'; cp++) {
 163                                         if (!isdigit((u_char)*cp))
 164                                                 goto error;
 165                                 }
 166                                 sy->range_type = STYLE_RANGE_SESSION;
 167                                 sy->range_argument = atoi(found + 1);
 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 {
 222                         if ((value = attributes_fromstring(tmp)) == -1)
 223                                 goto error;
 224                         sy->gc.attr |= value;
 225                 }
 226
 227                 in += end + strspn(in + end, delimiters);
 228         } while (*in != '\0');
 229
 230         return (0);
 231
 232 error:
 233         style_copy(sy, &saved);
 234         return (-1);
 235 }
 236
 237 /* Convert style to a string. */
 238 const char *
 239 style_tostring(struct style *sy)
 240 {
 241         struct grid_cell        *gc = &sy->gc;
 242         int                      off = 0;
 243         const char              *comma = "", *tmp = "";
 244         static char              s[256];
 245         char                     b[21];
 246
 247         *s = '\0';
 248
 249         if (sy->list != STYLE_LIST_OFF) {
 250                 if (sy->list == STYLE_LIST_ON)
 251                         tmp = "on";
 252                 else if (sy->list == STYLE_LIST_FOCUS)
 253                         tmp = "focus";
 254                 else if (sy->list == STYLE_LIST_LEFT_MARKER)
 255                         tmp = "left-marker";
 256                 else if (sy->list == STYLE_LIST_RIGHT_MARKER)
 257                         tmp = "right-marker";
 258                 off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma,
 259                     tmp);
 260                 comma = ",";
 261         }
 262         if (sy->range_type != STYLE_RANGE_NONE) {
 263                 if (sy->range_type == STYLE_RANGE_LEFT)
 264                         tmp = "left";
 265                 else if (sy->range_type == STYLE_RANGE_RIGHT)
 266                         tmp = "right";
 267                 else if (sy->range_type == STYLE_RANGE_PANE) {
 268                         snprintf(b, sizeof b, "pane|%%%u", sy->range_argument);
 269                         tmp = b;
 270                 } else if (sy->range_type == STYLE_RANGE_WINDOW) {
 271                         snprintf(b, sizeof b, "window|%u", sy->range_argument);
 272                         tmp = b;
 273                 } else if (sy->range_type == STYLE_RANGE_SESSION) {
 274                         snprintf(b, sizeof b, "session|$%u",
 275                             sy->range_argument);
 276                         tmp = b;
 277                 } else if (sy->range_type == STYLE_RANGE_USER) {
 278                         snprintf(b, sizeof b, "user|%s", sy->range_string);
 279                         tmp = b;
 280                 }
 281                 off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma,
 282                     tmp);
 283                 comma = ",";
 284         }
 285         if (sy->align != STYLE_ALIGN_DEFAULT) {
 286                 if (sy->align == STYLE_ALIGN_LEFT)
 287                         tmp = "left";
 288                 else if (sy->align == STYLE_ALIGN_CENTRE)
 289                         tmp = "centre";
 290                 else if (sy->align == STYLE_ALIGN_RIGHT)
 291                         tmp = "right";
 292                 else if (sy->align == STYLE_ALIGN_ABSOLUTE_CENTRE)
 293                         tmp = "absolute-centre";
 294                 off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma,
 295                     tmp);
 296                 comma = ",";
 297         }
 298         if (sy->default_type != STYLE_DEFAULT_BASE) {
 299                 if (sy->default_type == STYLE_DEFAULT_PUSH)
 300                         tmp = "push-default";
 301                 else if (sy->default_type == STYLE_DEFAULT_POP)
 302                         tmp = "pop-default";
 303                 off += xsnprintf(s + off, sizeof s - off, "%s%s", comma, tmp);
 304                 comma = ",";
 305         }
 306         if (sy->fill != 8) {
 307                 off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma,
 308                     colour_tostring(sy->fill));
 309                 comma = ",";
 310         }
 311         if (gc->fg != 8) {
 312                 off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma,
 313                     colour_tostring(gc->fg));
 314                 comma = ",";
 315         }
 316         if (gc->bg != 8) {
 317                 off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma,
 318                     colour_tostring(gc->bg));
 319                 comma = ",";
 320         }
 321         if (gc->us != 8) {
 322                 off += xsnprintf(s + off, sizeof s - off, "%sus=%s", comma,
 323                     colour_tostring(gc->us));
 324                 comma = ",";
 325         }
 326         if (gc->attr != 0) {
 327                 xsnprintf(s + off, sizeof s - off, "%s%s", comma,
 328                     attributes_tostring(gc->attr));
 329                 comma = ",";
 330         }
 331
 332         if (*s == '\0')
 333                 return ("default");
 334         return (s);
 335 }
 336
 337 /* Apply a style on top of the given style. */
 338 void
 339 style_add(struct grid_cell *gc, struct options *oo, const char *name,
 340     struct format_tree *ft)
 341 {
 342         struct style            *sy;
 343         struct format_tree      *ft0 = NULL;
 344
 345         if (ft == NULL)
 346                 ft = ft0 = format_create(NULL, NULL, 0, FORMAT_NOJOBS);
 347
 348         sy = options_string_to_style(oo, name, ft);
 349         if (sy == NULL)
 350                 sy = &style_default;
 351         if (sy->gc.fg != 8)
 352                 gc->fg = sy->gc.fg;
 353         if (sy->gc.bg != 8)
 354                 gc->bg = sy->gc.bg;
 355         if (sy->gc.us != 8)
 356                 gc->us = sy->gc.us;
 357         gc->attr |= sy->gc.attr;
 358
 359         if (ft0 != NULL)
 360                 format_free(ft0);
 361 }
 362
 363 /* Apply a style on top of the default style. */
 364 void
 365 style_apply(struct grid_cell *gc, struct options *oo, const char *name,
 366     struct format_tree *ft)
 367 {
 368         memcpy(gc, &grid_default_cell, sizeof *gc);
 369         style_add(gc, oo, name, ft);
 370 }
 371
 372 /* Initialize style from cell. */
 373 void
 374 style_set(struct style *sy, const struct grid_cell *gc)
 375 {
 376         memcpy(sy, &style_default, sizeof *sy);
 377         memcpy(&sy->gc, gc, sizeof sy->gc);
 378 }
 379
 380 /* Copy style. */
 381 void
 382 style_copy(struct style *dst, struct style *src)
 383 {
 384         memcpy(dst, src, sizeof *dst);
 385 }