1 /* $OpenBSD: style.c,v 1.36 2024/11/15 13:12:20 nicm Exp $ */ 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 } 426