1 /* $OpenBSD: style.c,v 1.31 2022/06/30 09:55:53 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_DEFAULT_BASE 43 }; 44 45 /* 46 * Parse an embedded style of the form "fg=colour,bg=colour,bright,...". Note 47 * that this adds onto the given style, so it must have been initialized 48 * already. 49 */ 50 int 51 style_parse(struct style *sy, const struct grid_cell *base, const char *in) 52 { 53 struct style saved; 54 const char delimiters[] = " ,\n", *cp; 55 char tmp[256], *found; 56 int value; 57 size_t end; 58 59 if (*in == '\0') 60 return (0); 61 style_copy(&saved, sy); 62 63 log_debug("%s: %s", __func__, in); 64 do { 65 while (*in != '\0' && strchr(delimiters, *in) != NULL) 66 in++; 67 if (*in == '\0') 68 break; 69 70 end = strcspn(in, delimiters); 71 if (end > (sizeof tmp) - 1) 72 goto error; 73 memcpy(tmp, in, end); 74 tmp[end] = '\0'; 75 76 log_debug("%s: %s", __func__, tmp); 77 if (strcasecmp(tmp, "default") == 0) { 78 sy->gc.fg = base->fg; 79 sy->gc.bg = base->bg; 80 sy->gc.attr = base->attr; 81 sy->gc.flags = base->flags; 82 } else if (strcasecmp(tmp, "ignore") == 0) 83 sy->ignore = 1; 84 else if (strcasecmp(tmp, "noignore") == 0) 85 sy->ignore = 0; 86 else if (strcasecmp(tmp, "push-default") == 0) 87 sy->default_type = STYLE_DEFAULT_PUSH; 88 else if (strcasecmp(tmp, "pop-default") == 0) 89 sy->default_type = STYLE_DEFAULT_POP; 90 else if (strcasecmp(tmp, "nolist") == 0) 91 sy->list = STYLE_LIST_OFF; 92 else if (strncasecmp(tmp, "list=", 5) == 0) { 93 if (strcasecmp(tmp + 5, "on") == 0) 94 sy->list = STYLE_LIST_ON; 95 else if (strcasecmp(tmp + 5, "focus") == 0) 96 sy->list = STYLE_LIST_FOCUS; 97 else if (strcasecmp(tmp + 5, "left-marker") == 0) 98 sy->list = STYLE_LIST_LEFT_MARKER; 99 else if (strcasecmp(tmp + 5, "right-marker") == 0) 100 sy->list = STYLE_LIST_RIGHT_MARKER; 101 else 102 goto error; 103 } else if (strcasecmp(tmp, "norange") == 0) { 104 sy->range_type = style_default.range_type; 105 sy->range_argument = style_default.range_type; 106 } else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) { 107 found = strchr(tmp + 6, '|'); 108 if (found != NULL) { 109 *found++ = '\0'; 110 if (*found == '\0') 111 goto error; 112 for (cp = found; *cp != '\0'; cp++) { 113 if (!isdigit((u_char)*cp)) 114 goto error; 115 } 116 } 117 if (strcasecmp(tmp + 6, "left") == 0) { 118 if (found != NULL) 119 goto error; 120 sy->range_type = STYLE_RANGE_LEFT; 121 sy->range_argument = 0; 122 } else if (strcasecmp(tmp + 6, "right") == 0) { 123 if (found != NULL) 124 goto error; 125 sy->range_type = STYLE_RANGE_RIGHT; 126 sy->range_argument = 0; 127 } else if (strcasecmp(tmp + 6, "window") == 0) { 128 if (found == NULL) 129 goto error; 130 sy->range_type = STYLE_RANGE_WINDOW; 131 sy->range_argument = atoi(found); 132 } 133 } else if (strcasecmp(tmp, "noalign") == 0) 134 sy->align = style_default.align; 135 else if (end > 6 && strncasecmp(tmp, "align=", 6) == 0) { 136 if (strcasecmp(tmp + 6, "left") == 0) 137 sy->align = STYLE_ALIGN_LEFT; 138 else if (strcasecmp(tmp + 6, "centre") == 0) 139 sy->align = STYLE_ALIGN_CENTRE; 140 else if (strcasecmp(tmp + 6, "right") == 0) 141 sy->align = STYLE_ALIGN_RIGHT; 142 else if (strcasecmp(tmp + 6, "absolute-centre") == 0) 143 sy->align = STYLE_ALIGN_ABSOLUTE_CENTRE; 144 else 145 goto error; 146 } else if (end > 5 && strncasecmp(tmp, "fill=", 5) == 0) { 147 if ((value = colour_fromstring(tmp + 5)) == -1) 148 goto error; 149 sy->fill = value; 150 } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) { 151 if ((value = colour_fromstring(tmp + 3)) == -1) 152 goto error; 153 if (*in == 'f' || *in == 'F') { 154 if (value != 8) 155 sy->gc.fg = value; 156 else 157 sy->gc.fg = base->fg; 158 } else if (*in == 'b' || *in == 'B') { 159 if (value != 8) 160 sy->gc.bg = value; 161 else 162 sy->gc.bg = base->bg; 163 } else 164 goto error; 165 } else if (strcasecmp(tmp, "none") == 0) 166 sy->gc.attr = 0; 167 else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) { 168 if ((value = attributes_fromstring(tmp + 2)) == -1) 169 goto error; 170 sy->gc.attr &= ~value; 171 } else { 172 if ((value = attributes_fromstring(tmp)) == -1) 173 goto error; 174 sy->gc.attr |= value; 175 } 176 177 in += end + strspn(in + end, delimiters); 178 } while (*in != '\0'); 179 180 return (0); 181 182 error: 183 style_copy(sy, &saved); 184 return (-1); 185 } 186 187 /* Convert style to a string. */ 188 const char * 189 style_tostring(struct style *sy) 190 { 191 struct grid_cell *gc = &sy->gc; 192 int off = 0; 193 const char *comma = "", *tmp = ""; 194 static char s[256]; 195 char b[16]; 196 197 *s = '\0'; 198 199 if (sy->list != STYLE_LIST_OFF) { 200 if (sy->list == STYLE_LIST_ON) 201 tmp = "on"; 202 else if (sy->list == STYLE_LIST_FOCUS) 203 tmp = "focus"; 204 else if (sy->list == STYLE_LIST_LEFT_MARKER) 205 tmp = "left-marker"; 206 else if (sy->list == STYLE_LIST_RIGHT_MARKER) 207 tmp = "right-marker"; 208 off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma, 209 tmp); 210 comma = ","; 211 } 212 if (sy->range_type != STYLE_RANGE_NONE) { 213 if (sy->range_type == STYLE_RANGE_LEFT) 214 tmp = "left"; 215 else if (sy->range_type == STYLE_RANGE_RIGHT) 216 tmp = "right"; 217 else if (sy->range_type == STYLE_RANGE_WINDOW) { 218 snprintf(b, sizeof b, "window|%u", sy->range_argument); 219 tmp = b; 220 } 221 off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma, 222 tmp); 223 comma = ","; 224 } 225 if (sy->align != STYLE_ALIGN_DEFAULT) { 226 if (sy->align == STYLE_ALIGN_LEFT) 227 tmp = "left"; 228 else if (sy->align == STYLE_ALIGN_CENTRE) 229 tmp = "centre"; 230 else if (sy->align == STYLE_ALIGN_RIGHT) 231 tmp = "right"; 232 else if (sy->align == STYLE_ALIGN_ABSOLUTE_CENTRE) 233 tmp = "absolute-centre"; 234 off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma, 235 tmp); 236 comma = ","; 237 } 238 if (sy->default_type != STYLE_DEFAULT_BASE) { 239 if (sy->default_type == STYLE_DEFAULT_PUSH) 240 tmp = "push-default"; 241 else if (sy->default_type == STYLE_DEFAULT_POP) 242 tmp = "pop-default"; 243 off += xsnprintf(s + off, sizeof s - off, "%s%s", comma, tmp); 244 comma = ","; 245 } 246 if (sy->fill != 8) { 247 off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma, 248 colour_tostring(sy->fill)); 249 comma = ","; 250 } 251 if (gc->fg != 8) { 252 off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma, 253 colour_tostring(gc->fg)); 254 comma = ","; 255 } 256 if (gc->bg != 8) { 257 off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma, 258 colour_tostring(gc->bg)); 259 comma = ","; 260 } 261 if (gc->attr != 0) { 262 xsnprintf(s + off, sizeof s - off, "%s%s", comma, 263 attributes_tostring(gc->attr)); 264 comma = ","; 265 } 266 267 if (*s == '\0') 268 return ("default"); 269 return (s); 270 } 271 272 /* Apply a style on top of the given style. */ 273 void 274 style_add(struct grid_cell *gc, struct options *oo, const char *name, 275 struct format_tree *ft) 276 { 277 struct style *sy; 278 struct format_tree *ft0 = NULL; 279 280 if (ft == NULL) 281 ft = ft0 = format_create(NULL, NULL, 0, FORMAT_NOJOBS); 282 283 sy = options_string_to_style(oo, name, ft); 284 if (sy == NULL) 285 sy = &style_default; 286 if (sy->gc.fg != 8) 287 gc->fg = sy->gc.fg; 288 if (sy->gc.bg != 8) 289 gc->bg = sy->gc.bg; 290 gc->attr |= sy->gc.attr; 291 292 if (ft0 != NULL) 293 format_free(ft0); 294 } 295 296 /* Apply a style on top of the default style. */ 297 void 298 style_apply(struct grid_cell *gc, struct options *oo, const char *name, 299 struct format_tree *ft) 300 { 301 memcpy(gc, &grid_default_cell, sizeof *gc); 302 style_add(gc, oo, name, ft); 303 } 304 305 /* Initialize style from cell. */ 306 void 307 style_set(struct style *sy, const struct grid_cell *gc) 308 { 309 memcpy(sy, &style_default, sizeof *sy); 310 memcpy(&sy->gc, gc, sizeof sy->gc); 311 } 312 313 /* Copy style. */ 314 void 315 style_copy(struct style *dst, struct style *src) 316 { 317 memcpy(dst, src, sizeof *dst); 318 } 319