1 /* $Header: /src/pub/tcsh/tw.color.c,v 1.7 2000/06/11 02:14:16 kim Exp $ */ 2 /* 3 * tw.color.c: builtin color ls-F 4 */ 5 /*- 6 * Copyright (c) 1998 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 #include "sh.h" 38 39 RCSID("$Id: tw.color.c,v 1.7 2000/06/11 02:14:16 kim Exp $") 40 41 #include "tw.h" 42 #include "ed.h" 43 #include "tc.h" 44 45 #ifdef COLOR_LS_F 46 47 typedef struct { 48 char *s; 49 int len; 50 } Str; 51 52 53 #define VAR(suffix,variable,defaultcolor) \ 54 { \ 55 suffix, variable, { defaultcolor, sizeof(defaultcolor) - 1 }, \ 56 { defaultcolor, sizeof(defaultcolor) - 1 } \ 57 } 58 #define NOS '\0' /* no suffix */ 59 60 typedef struct { 61 const char suffix; 62 const char *variable; 63 Str color; 64 Str defaultcolor; 65 } Variable; 66 67 static Variable variables[] = { 68 VAR('/', "di", "01;34"), /* Directory */ 69 VAR('@', "ln", "01;36"), /* Symbolic link */ 70 VAR('&', "or", ""), /* Orphanned symbolic link (defaults to ln) */ 71 VAR('|', "pi", "33"), /* Named pipe (FIFO) */ 72 VAR('=', "so", "01;35"), /* Socket */ 73 VAR('#', "bd", "01;33"), /* Block device */ 74 VAR('%', "cd", "01;33"), /* Character device */ 75 VAR('*', "ex", "01;32"), /* Executable file */ 76 VAR(NOS, "fi", "0"), /* Regular file */ 77 VAR(NOS, "no", "0"), /* Normal (non-filename) text */ 78 VAR(NOS, "mi", ""), /* Missing file (defaults to fi) */ 79 #ifdef IS_ASCII 80 VAR(NOS, "lc", "\033["), /* Left code (ASCII) */ 81 #else 82 VAR(NOS, "lc", "\x27["), /* Left code (EBCDIC)*/ 83 #endif 84 VAR(NOS, "rc", "m"), /* Right code */ 85 VAR(NOS, "ec", ""), /* End code (replaces lc+no+rc) */ 86 }; 87 88 enum FileType { 89 VDir, VSym, VOrph, VPipe, VSock, VBlock, VChr, VExe, 90 VFile, VNormal, VMiss, VLeft, VRight, VEnd 91 }; 92 93 #define nvariables (sizeof(variables)/sizeof(variables[0])) 94 95 typedef struct { 96 Str extension; /* file extension */ 97 Str color; /* color string */ 98 } Extension; 99 100 static Extension *extensions = NULL; 101 static int nextensions = 0; 102 103 static char *colors = NULL; 104 bool color_context_ls = FALSE; /* do colored ls */ 105 static bool color_context_lsmF = FALSE; /* do colored ls-F */ 106 107 static bool getstring __P((char **, const Char **, Str *, int)); 108 static void put_color __P((Str *)); 109 static void print_color __P((Char *, size_t, int)); 110 111 /* set_color_context(): 112 */ 113 void 114 set_color_context() 115 { 116 struct varent *vp = adrof(STRcolor); 117 118 if (!vp) { 119 color_context_ls = FALSE; 120 color_context_lsmF = FALSE; 121 } 122 else if (!vp->vec[0] || vp->vec[0][0] == '\0') { 123 color_context_ls = TRUE; 124 color_context_lsmF = TRUE; 125 } 126 else { 127 size_t i; 128 129 color_context_ls = FALSE; 130 color_context_lsmF = FALSE; 131 for (i = 0; vp->vec[i]; i++) 132 if (Strcmp(vp->vec[i], STRls) == 0) 133 color_context_ls = TRUE; 134 else if (Strcmp(vp->vec[i], STRlsmF) == 0) 135 color_context_lsmF = TRUE; 136 } 137 } 138 139 140 /* getstring(): 141 */ 142 static bool 143 getstring(dp, sp, pd, f) 144 char **dp; /* dest buffer */ 145 const Char **sp; /* source buffer */ 146 Str *pd; /* pointer to dest buffer */ 147 int f; /* final character */ 148 { 149 const Char *s = *sp; 150 char *d = *dp; 151 int sc; 152 153 while (*s && (*s & CHAR) != f && (*s & CHAR) != ':') { 154 if ((*s & CHAR) == '\\' || (*s & CHAR) == '^') { 155 if ((sc = parseescape(&s)) == -1) 156 return 0; 157 else 158 *d++ = (char) sc; 159 } 160 else 161 *d++ = *s++ & CHAR; 162 } 163 164 pd->s = *dp; 165 pd->len = (int) (d - *dp); 166 *sp = s; 167 *dp = d; 168 return *s == f; 169 } 170 171 172 /* parseLS_COLORS(): 173 * Parse the LS_COLORS environment variable 174 */ 175 void 176 parseLS_COLORS(value) 177 Char *value; /* LS_COLOR variable's value */ 178 { 179 int i; 180 size_t len; 181 const Char *v; /* pointer in value */ 182 char *c; /* pointer in colors */ 183 Extension *e; /* pointer in extensions */ 184 jmp_buf_t osetexit; 185 186 /* init */ 187 if (extensions) 188 xfree((ptr_t) extensions); 189 for (i = 0; i < nvariables; i++) 190 variables[i].color = variables[i].defaultcolor; 191 colors = NULL; 192 extensions = NULL; 193 nextensions = 0; 194 195 if (value == NULL) 196 return; 197 198 len = Strlen(value); 199 /* allocate memory */ 200 i = 1; 201 for (v = value; *v; v++) 202 if ((*v & CHAR) == ':') 203 i++; 204 extensions = (Extension *) xmalloc((size_t) (len + i * sizeof(Extension))); 205 colors = i * sizeof(Extension) + (char *)extensions; 206 nextensions = 0; 207 208 /* init pointers */ 209 v = value; 210 c = colors; 211 e = &extensions[0]; 212 213 /* Prevent from crashing if unknown parameters are given. */ 214 215 getexit(osetexit); 216 217 if (setexit() == 0) { 218 219 /* parse */ 220 while (*v) { 221 switch (*v & CHAR) { 222 case ':': 223 v++; 224 continue; 225 226 case '*': /* :*ext=color: */ 227 v++; 228 if (getstring(&c, &v, &e->extension, '=') && 229 0 < e->extension.len) { 230 v++; 231 getstring(&c, &v, &e->color, ':'); 232 e++; 233 continue; 234 } 235 break; 236 237 default: /* :vl=color: */ 238 if (v[0] && v[1] && (v[2] & CHAR) == '=') { 239 for (i = 0; i < nvariables; i++) 240 if (variables[i].variable[0] == (v[0] & CHAR) && 241 variables[i].variable[1] == (v[1] & CHAR)) 242 break; 243 if (i < nvariables) { 244 v += 3; 245 getstring(&c, &v, &variables[i].color, ':'); 246 continue; 247 } 248 else 249 stderror(ERR_BADCOLORVAR, v[0], v[1]); 250 } 251 break; 252 } 253 while (*v && (*v & CHAR) != ':') 254 v++; 255 } 256 } 257 258 resexit(osetexit); 259 260 nextensions = (int) (e - extensions); 261 } 262 263 264 /* put_color(): 265 */ 266 static void 267 put_color(color) 268 Str *color; 269 { 270 extern bool output_raw; /* PWP: in sh.print.c */ 271 size_t i; 272 char *c = color->s; 273 bool original_output_raw = output_raw; 274 275 output_raw = TRUE; 276 for (i = color->len; 0 < i; i--) 277 xputchar(*c++); 278 output_raw = original_output_raw; 279 } 280 281 282 /* print_color(): 283 */ 284 static void 285 print_color(fname, len, suffix) 286 Char *fname; 287 size_t len; 288 int suffix; 289 { 290 int i; 291 char *filename = short2str(fname); 292 char *last = filename + len; 293 Str *color = &variables[VFile].color; 294 295 switch (suffix) { 296 case '>': /* File is a symbolic link pointing to 297 * a directory */ 298 color = &variables[VDir].color; 299 break; 300 case '+': /* File is a hidden directory [aix] or 301 * context dependent [hpux] */ 302 case ':': /* File is network special [hpux] */ 303 break; 304 default: 305 for (i = 0; i < nvariables; i++) 306 if (variables[i].suffix != NOS && 307 variables[i].suffix == suffix) { 308 color = &variables[i].color; 309 break; 310 } 311 if (i == nvariables) { 312 for (i = 0; i < nextensions; i++) 313 if (strncmp(last - extensions[i].extension.len, 314 extensions[i].extension.s, 315 extensions[i].extension.len) == 0) { 316 color = &extensions[i].color; 317 break; 318 } 319 } 320 break; 321 } 322 323 put_color(&variables[VLeft].color); 324 put_color(color); 325 put_color(&variables[VRight].color); 326 } 327 328 329 /* print_with_color(): 330 */ 331 void 332 print_with_color(filename, len, suffix) 333 Char *filename; 334 size_t len; 335 int suffix; 336 { 337 if (color_context_lsmF && 338 (haderr ? (didfds ? is2atty : isdiagatty) : 339 (didfds ? is1atty : isoutatty))) { 340 print_color(filename, len, suffix); 341 xprintf("%S", filename); 342 if (0 < variables[VEnd].color.len) 343 put_color(&variables[VEnd].color); 344 else { 345 put_color(&variables[VLeft].color); 346 put_color(&variables[VNormal].color); 347 put_color(&variables[VRight].color); 348 } 349 xputchar(suffix); 350 } 351 else 352 xprintf("%S%c", filename, suffix); 353 } 354 355 356 #endif /* COLOR_LS_F */ 357