1 /* $OpenBSD: style.c,v 1.28 2020/05/16 16:02:24 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 }, 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[] = " ,", *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 143 goto error; 144 } else if (end > 5 && strncasecmp(tmp, "fill=", 5) == 0) { 145 if ((value = colour_fromstring(tmp + 5)) == -1) 146 goto error; 147 sy->fill = value; 148 } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) { 149 if ((value = colour_fromstring(tmp + 3)) == -1) 150 goto error; 151 if (*in == 'f' || *in == 'F') { 152 if (value != 8) 153 sy->gc.fg = value; 154 else 155 sy->gc.fg = base->fg; 156 } else if (*in == 'b' || *in == 'B') { 157 if (value != 8) 158 sy->gc.bg = value; 159 else 160 sy->gc.bg = base->bg; 161 } else 162 goto error; 163 } else if (strcasecmp(tmp, "none") == 0) 164 sy->gc.attr = 0; 165 else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) { 166 if ((value = attributes_fromstring(tmp + 2)) == -1) 167 goto error; 168 sy->gc.attr &= ~value; 169 } else { 170 if ((value = attributes_fromstring(tmp)) == -1) 171 goto error; 172 sy->gc.attr |= value; 173 } 174 175 in += end + strspn(in + end, delimiters); 176 } while (*in != '\0'); 177 178 return (0); 179 180 error: 181 style_copy(sy, &saved); 182 return (-1); 183 } 184 185 /* Convert style to a string. */ 186 const char * 187 style_tostring(struct style *sy) 188 { 189 struct grid_cell *gc = &sy->gc; 190 int off = 0; 191 const char *comma = "", *tmp = ""; 192 static char s[256]; 193 char b[16]; 194 195 *s = '\0'; 196 197 if (sy->list != STYLE_LIST_OFF) { 198 if (sy->list == STYLE_LIST_ON) 199 tmp = "on"; 200 else if (sy->list == STYLE_LIST_FOCUS) 201 tmp = "focus"; 202 else if (sy->list == STYLE_LIST_LEFT_MARKER) 203 tmp = "left-marker"; 204 else if (sy->list == STYLE_LIST_RIGHT_MARKER) 205 tmp = "right-marker"; 206 off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma, 207 tmp); 208 comma = ","; 209 } 210 if (sy->range_type != STYLE_RANGE_NONE) { 211 if (sy->range_type == STYLE_RANGE_LEFT) 212 tmp = "left"; 213 else if (sy->range_type == STYLE_RANGE_RIGHT) 214 tmp = "right"; 215 else if (sy->range_type == STYLE_RANGE_WINDOW) { 216 snprintf(b, sizeof b, "window|%u", sy->range_argument); 217 tmp = b; 218 } 219 off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma, 220 tmp); 221 comma = ","; 222 } 223 if (sy->align != STYLE_ALIGN_DEFAULT) { 224 if (sy->align == STYLE_ALIGN_LEFT) 225 tmp = "left"; 226 else if (sy->align == STYLE_ALIGN_CENTRE) 227 tmp = "centre"; 228 else if (sy->align == STYLE_ALIGN_RIGHT) 229 tmp = "right"; 230 off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma, 231 tmp); 232 comma = ","; 233 } 234 if (sy->default_type != STYLE_DEFAULT_BASE) { 235 if (sy->default_type == STYLE_DEFAULT_PUSH) 236 tmp = "push-default"; 237 else if (sy->default_type == STYLE_DEFAULT_POP) 238 tmp = "pop-default"; 239 off += xsnprintf(s + off, sizeof s - off, "%s%s", comma, tmp); 240 comma = ","; 241 } 242 if (sy->fill != 8) { 243 off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma, 244 colour_tostring(sy->fill)); 245 comma = ","; 246 } 247 if (gc->fg != 8) { 248 off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma, 249 colour_tostring(gc->fg)); 250 comma = ","; 251 } 252 if (gc->bg != 8) { 253 off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma, 254 colour_tostring(gc->bg)); 255 comma = ","; 256 } 257 if (gc->attr != 0) { 258 xsnprintf(s + off, sizeof s - off, "%s%s", comma, 259 attributes_tostring(gc->attr)); 260 comma = ","; 261 } 262 263 if (*s == '\0') 264 return ("default"); 265 return (s); 266 } 267 268 /* Apply a style on top of the given style. */ 269 void 270 style_add(struct grid_cell *gc, struct options *oo, const char *name, 271 struct format_tree *ft) 272 { 273 struct style *sy; 274 struct format_tree *ft0 = NULL; 275 276 if (ft == NULL) 277 ft = ft0 = format_create(NULL, NULL, 0, FORMAT_NOJOBS); 278 279 sy = options_string_to_style(oo, name, ft); 280 if (sy == NULL) 281 sy = &style_default; 282 if (sy->gc.fg != 8) 283 gc->fg = sy->gc.fg; 284 if (sy->gc.bg != 8) 285 gc->bg = sy->gc.bg; 286 gc->attr |= sy->gc.attr; 287 288 if (ft0 != NULL) 289 format_free(ft0); 290 } 291 292 /* Apply a style on top of the default style. */ 293 void 294 style_apply(struct grid_cell *gc, struct options *oo, const char *name, 295 struct format_tree *ft) 296 { 297 memcpy(gc, &grid_default_cell, sizeof *gc); 298 style_add(gc, oo, name, ft); 299 } 300 301 /* Initialize style from cell. */ 302 void 303 style_set(struct style *sy, const struct grid_cell *gc) 304 { 305 memcpy(sy, &style_default, sizeof *sy); 306 memcpy(&sy->gc, gc, sizeof sy->gc); 307 } 308 309 /* Copy style. */ 310 void 311 style_copy(struct style *dst, struct style *src) 312 { 313 memcpy(dst, src, sizeof *dst); 314 } 315