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 (~GRID_ATTR_CHARSET) 30 31 /* Default style. */ 32 static struct style style_default = { 33 { { { ' ' }, 0, 1, 1 }, 0, 0, 8, 8, 0 }, 34 35 8, 36 STYLE_ALIGN_DEFAULT, 37 STYLE_LIST_OFF, 38 39 STYLE_RANGE_NONE, 0 40 }; 41 42 /* 43 * Parse an embedded style of the form "fg=colour,bg=colour,bright,...". 44 * Note that this adds onto the given style, so it must have been initialized 45 * alredy. 46 */ 47 int 48 style_parse(struct style *sy, const struct grid_cell *base, const char *in) 49 { 50 struct style saved; 51 const char delimiters[] = " ,", *cp; 52 char tmp[256], *found; 53 int value; 54 size_t end; 55 56 if (*in == '\0') 57 return (0); 58 style_copy(&saved, sy); 59 60 do { 61 while (*in != '\0' && strchr(delimiters, *in) != NULL) 62 in++; 63 if (*in == '\0') 64 break; 65 66 end = strcspn(in, delimiters); 67 if (end > (sizeof tmp) - 1) 68 goto error; 69 memcpy(tmp, in, end); 70 tmp[end] = '\0'; 71 72 if (strcasecmp(tmp, "default") == 0) { 73 sy->gc.fg = base->fg; 74 sy->gc.bg = base->bg; 75 sy->gc.attr = base->attr; 76 sy->gc.flags = base->flags; 77 } else if (strcasecmp(tmp, "nolist") == 0) 78 sy->list = STYLE_LIST_OFF; 79 else if (strncasecmp(tmp, "list=", 5) == 0) { 80 if (strcasecmp(tmp + 5, "on") == 0) 81 sy->list = STYLE_LIST_ON; 82 else if (strcasecmp(tmp + 5, "focus") == 0) 83 sy->list = STYLE_LIST_FOCUS; 84 else if (strcasecmp(tmp + 5, "left-marker") == 0) 85 sy->list = STYLE_LIST_LEFT_MARKER; 86 else if (strcasecmp(tmp + 5, "right-marker") == 0) 87 sy->list = STYLE_LIST_RIGHT_MARKER; 88 else 89 goto error; 90 } else if (strcasecmp(tmp, "norange") == 0) { 91 sy->range_type = style_default.range_type; 92 sy->range_argument = style_default.range_type; 93 } else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) { 94 found = strchr(tmp + 6, '|'); 95 if (found != NULL) { 96 *found++ = '\0'; 97 if (*found == '\0') 98 goto error; 99 for (cp = found; *cp != '\0'; cp++) { 100 if (!isdigit((u_char)*cp)) 101 goto error; 102 } 103 } 104 if (strcasecmp(tmp + 6, "left") == 0) { 105 if (found != NULL) 106 goto error; 107 sy->range_type = STYLE_RANGE_LEFT; 108 sy->range_argument = 0; 109 } else if (strcasecmp(tmp + 6, "right") == 0) { 110 if (found != NULL) 111 goto error; 112 sy->range_type = STYLE_RANGE_RIGHT; 113 sy->range_argument = 0; 114 } else if (strcasecmp(tmp + 6, "window") == 0) { 115 if (found == NULL) 116 goto error; 117 sy->range_type = STYLE_RANGE_WINDOW; 118 sy->range_argument = atoi(found); 119 } 120 } else if (strcasecmp(tmp, "noalign") == 0) 121 sy->align = style_default.align; 122 else if (end > 6 && strncasecmp(tmp, "align=", 6) == 0) { 123 if (strcasecmp(tmp + 6, "left") == 0) 124 sy->align = STYLE_ALIGN_LEFT; 125 else if (strcasecmp(tmp + 6, "centre") == 0) 126 sy->align = STYLE_ALIGN_CENTRE; 127 else if (strcasecmp(tmp + 6, "right") == 0) 128 sy->align = STYLE_ALIGN_RIGHT; 129 else 130 goto error; 131 } else if (end > 5 && strncasecmp(tmp, "fill=", 5) == 0) { 132 if ((value = colour_fromstring(tmp + 5)) == -1) 133 goto error; 134 sy->fill = value; 135 } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) { 136 if ((value = colour_fromstring(tmp + 3)) == -1) 137 goto error; 138 if (*in == 'f' || *in == 'F') { 139 if (value != 8) 140 sy->gc.fg = value; 141 else 142 sy->gc.fg = base->fg; 143 } else if (*in == 'b' || *in == 'B') { 144 if (value != 8) 145 sy->gc.bg = value; 146 else 147 sy->gc.bg = base->bg; 148 } else 149 goto error; 150 } else if (strcasecmp(tmp, "none") == 0) 151 sy->gc.attr = 0; 152 else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) { 153 if ((value = attributes_fromstring(tmp + 2)) == -1) 154 goto error; 155 sy->gc.attr &= ~value; 156 } else { 157 if ((value = attributes_fromstring(tmp)) == -1) 158 goto error; 159 sy->gc.attr |= value; 160 } 161 162 in += end + strspn(in + end, delimiters); 163 } while (*in != '\0'); 164 165 return (0); 166 167 error: 168 style_copy(sy, &saved); 169 return (-1); 170 } 171 172 /* Convert style to a string. */ 173 const char * 174 style_tostring(struct style *sy) 175 { 176 struct grid_cell *gc = &sy->gc; 177 int off = 0; 178 const char *comma = "", *tmp = ""; 179 static char s[256]; 180 char b[16]; 181 182 *s = '\0'; 183 184 if (sy->list != STYLE_LIST_OFF) { 185 if (sy->list == STYLE_LIST_ON) 186 tmp = "on"; 187 else if (sy->list == STYLE_LIST_FOCUS) 188 tmp = "focus"; 189 else if (sy->list == STYLE_LIST_LEFT_MARKER) 190 tmp = "left-marker"; 191 else if (sy->list == STYLE_LIST_RIGHT_MARKER) 192 tmp = "right-marker"; 193 else 194 abort(); // XXX: gcc 195 off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma, 196 tmp); 197 comma = ","; 198 } 199 if (sy->range_type != STYLE_RANGE_NONE) { 200 if (sy->range_type == STYLE_RANGE_LEFT) 201 tmp = "left"; 202 else if (sy->range_type == STYLE_RANGE_RIGHT) 203 tmp = "right"; 204 else if (sy->range_type == STYLE_RANGE_WINDOW) { 205 snprintf(b, sizeof b, "window|%u", sy->range_argument); 206 tmp = b; 207 } else 208 abort(); // XXX: gcc 209 off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma, 210 tmp); 211 comma = ","; 212 } 213 if (sy->align != STYLE_ALIGN_DEFAULT) { 214 if (sy->align == STYLE_ALIGN_LEFT) 215 tmp = "left"; 216 else if (sy->align == STYLE_ALIGN_CENTRE) 217 tmp = "centre"; 218 else if (sy->align == STYLE_ALIGN_RIGHT) 219 tmp = "right"; 220 else 221 abort(); // XXX: gcc 222 off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma, 223 tmp); 224 comma = ","; 225 } 226 if (sy->fill != 8) { 227 off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma, 228 colour_tostring(sy->fill)); 229 comma = ","; 230 } 231 if (gc->fg != 8) { 232 off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma, 233 colour_tostring(gc->fg)); 234 comma = ","; 235 } 236 if (gc->bg != 8) { 237 off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma, 238 colour_tostring(gc->bg)); 239 comma = ","; 240 } 241 if (gc->attr != 0 && gc->attr != GRID_ATTR_CHARSET) { 242 xsnprintf(s + off, sizeof s - off, "%s%s", comma, 243 attributes_tostring(gc->attr)); 244 comma = ","; 245 } 246 247 if (*s == '\0') 248 return ("default"); 249 return (s); 250 } 251 252 /* Apply a style. */ 253 void 254 style_apply(struct grid_cell *gc, struct options *oo, const char *name) 255 { 256 struct style *sy; 257 258 memcpy(gc, &grid_default_cell, sizeof *gc); 259 sy = options_get_style(oo, name); 260 gc->fg = sy->gc.fg; 261 gc->bg = sy->gc.bg; 262 gc->attr |= sy->gc.attr; 263 } 264 265 /* Apply a style, updating if default. */ 266 void 267 style_apply_update(struct grid_cell *gc, struct options *oo, const char *name) 268 { 269 struct style *sy; 270 271 sy = options_get_style(oo, name); 272 if (sy->gc.fg != 8) 273 gc->fg = sy->gc.fg; 274 if (sy->gc.bg != 8) 275 gc->bg = sy->gc.bg; 276 if (sy->gc.attr != 0) 277 gc->attr |= sy->gc.attr; 278 } 279 280 /* Initialize style from cell. */ 281 void 282 style_set(struct style *sy, const struct grid_cell *gc) 283 { 284 memcpy(sy, &style_default, sizeof *sy); 285 memcpy(&sy->gc, gc, sizeof sy->gc); 286 } 287 288 /* Copy style. */ 289 void 290 style_copy(struct style *dst, struct style *src) 291 { 292 memcpy(dst, src, sizeof *dst); 293 } 294 295 /* Check if two styles are (visibly) the same. */ 296 int 297 style_equal(struct style *sy1, struct style *sy2) 298 { 299 struct grid_cell *gc1 = &sy1->gc; 300 struct grid_cell *gc2 = &sy2->gc; 301 302 if (gc1->fg != gc2->fg) 303 return (0); 304 if (gc1->bg != gc2->bg) 305 return (0); 306 if ((gc1->attr & STYLE_ATTR_MASK) != (gc2->attr & STYLE_ATTR_MASK)) 307 return (0); 308 if (sy1->fill != sy2->fill) 309 return (0); 310 if (sy1->align != sy2->align) 311 return (0); 312 return (1); 313 } 314 315 /* Is this style default? */ 316 int 317 style_is_default(struct style *sy) 318 { 319 return (style_equal(sy, &style_default)); 320 } 321