1 /* $Header: /p/tcsh/cvsroot/tcsh/tw.color.c,v 1.25 2008/10/17 19:57:33 christos 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. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 #include "sh.h" 34 35 RCSID("$tcsh: tw.color.c,v 1.25 2008/10/17 19:57:33 christos Exp $") 36 37 #include "tw.h" 38 #include "ed.h" 39 #include "tc.h" 40 41 #ifdef COLOR_LS_F 42 43 typedef struct { 44 const char *s; 45 size_t len; 46 } Str; 47 48 49 #define VAR(suffix,variable,defaultcolor) \ 50 { \ 51 suffix, variable, { defaultcolor, sizeof(defaultcolor) - 1 }, \ 52 { defaultcolor, sizeof(defaultcolor) - 1 } \ 53 } 54 #define NOS '\0' /* no suffix */ 55 56 typedef struct { 57 const char suffix; 58 const char *variable; 59 Str color; 60 Str defaultcolor; 61 } Variable; 62 63 static Variable variables[] = { 64 VAR('/', "di", "01;34"), /* Directory */ 65 VAR('@', "ln", "01;36"), /* Symbolic link */ 66 VAR('&', "or", ""), /* Orphanned symbolic link (defaults to ln) */ 67 VAR('|', "pi", "33"), /* Named pipe (FIFO) */ 68 VAR('=', "so", "01;35"), /* Socket */ 69 VAR('>', "do", "01;35"), /* Door (solaris fast ipc mechanism) */ 70 VAR('#', "bd", "01;33"), /* Block device */ 71 VAR('%', "cd", "01;33"), /* Character device */ 72 VAR('*', "ex", "01;32"), /* Executable file */ 73 VAR(NOS, "fi", "0"), /* Regular file */ 74 VAR(NOS, "no", "0"), /* Normal (non-filename) text */ 75 VAR(NOS, "mi", ""), /* Missing file (defaults to fi) */ 76 #ifdef IS_ASCII 77 VAR(NOS, "lc", "\033["), /* Left code (ASCII) */ 78 #else 79 VAR(NOS, "lc", "\x27["), /* Left code (EBCDIC)*/ 80 #endif 81 VAR(NOS, "rc", "m"), /* Right code */ 82 VAR(NOS, "ec", ""), /* End code (replaces lc+no+rc) */ 83 VAR(NOS, "su", ""), /* Setuid file (u+s) */ 84 VAR(NOS, "sg", ""), /* Setgid file (g+s) */ 85 VAR(NOS, "tw", ""), /* Sticky and other writable dir (+t,o+w) */ 86 VAR(NOS, "ow", ""), /* Other writable dir (o+w) but not sticky */ 87 VAR(NOS, "st", ""), /* Sticky dir (+t) but not other writable */ 88 VAR(NOS, "rs", "0"), /* Reset to normal color */ 89 }; 90 91 enum FileType { 92 VDir, VSym, VOrph, VPipe, VSock, VDoor, VBlock, VChr, VExe, 93 VFile, VNormal, VMiss, VLeft, VRight, VEnd 94 }; 95 96 #define nvariables (sizeof(variables)/sizeof(variables[0])) 97 98 typedef struct { 99 Str extension; /* file extension */ 100 Str color; /* color string */ 101 } Extension; 102 103 static Extension *extensions = NULL; 104 static size_t nextensions = 0; 105 106 static char *colors = NULL; 107 int color_context_ls = FALSE; /* do colored ls */ 108 static int color_context_lsmF = FALSE; /* do colored ls-F */ 109 110 static int getstring (char **, const Char **, Str *, int); 111 static void put_color (const Str *); 112 static void print_color (const Char *, size_t, Char); 113 114 /* set_color_context(): 115 */ 116 void 117 set_color_context(void) 118 { 119 struct varent *vp = adrof(STRcolor); 120 121 if (vp == NULL || vp->vec == NULL) { 122 color_context_ls = FALSE; 123 color_context_lsmF = FALSE; 124 } else if (!vp->vec[0] || vp->vec[0][0] == '\0') { 125 color_context_ls = TRUE; 126 color_context_lsmF = TRUE; 127 } else { 128 size_t i; 129 130 color_context_ls = FALSE; 131 color_context_lsmF = FALSE; 132 for (i = 0; vp->vec[i]; i++) 133 if (Strcmp(vp->vec[i], STRls) == 0) 134 color_context_ls = TRUE; 135 else if (Strcmp(vp->vec[i], STRlsmF) == 0) 136 color_context_lsmF = TRUE; 137 } 138 } 139 140 141 /* getstring(): 142 */ 143 static int 144 getstring(char **dp, const Char **sp, Str *pd, int f) 145 { 146 const Char *s = *sp; 147 char *d = *dp; 148 eChar sc; 149 150 while (*s && (*s & CHAR) != (Char)f && (*s & CHAR) != ':') { 151 if ((*s & CHAR) == '\\' || (*s & CHAR) == '^') { 152 if ((sc = parseescape(&s)) == CHAR_ERR) 153 return 0; 154 } 155 else 156 sc = *s++ & CHAR; 157 d += one_wctomb(d, sc); 158 } 159 160 pd->s = *dp; 161 pd->len = d - *dp; 162 *sp = s; 163 *dp = d; 164 return *s == (Char)f; 165 } 166 167 168 /* parseLS_COLORS(): 169 * Parse the LS_COLORS environment variable 170 */ 171 void 172 parseLS_COLORS(const Char *value) 173 { 174 size_t i, len; 175 const Char *v; /* pointer in value */ 176 char *c; /* pointer in colors */ 177 Extension *volatile e; /* pointer in extensions */ 178 jmp_buf_t osetexit; 179 size_t omark; 180 181 (void) &e; 182 183 /* init */ 184 xfree(extensions); 185 for (i = 0; i < nvariables; i++) 186 variables[i].color = variables[i].defaultcolor; 187 colors = NULL; 188 extensions = NULL; 189 nextensions = 0; 190 191 if (value == NULL) 192 return; 193 194 len = Strlen(value); 195 /* allocate memory */ 196 i = 1; 197 for (v = value; *v; v++) 198 if ((*v & CHAR) == ':') 199 i++; 200 extensions = xmalloc(len + i * sizeof(Extension)); 201 colors = i * sizeof(Extension) + (char *)extensions; 202 nextensions = 0; 203 204 /* init pointers */ 205 v = value; 206 c = colors; 207 e = &extensions[0]; 208 209 /* Prevent from crashing if unknown parameters are given. */ 210 211 omark = cleanup_push_mark(); 212 getexit(osetexit); 213 214 if (setexit() == 0) { 215 216 /* parse */ 217 while (*v) { 218 switch (*v & CHAR) { 219 case ':': 220 v++; 221 continue; 222 223 case '*': /* :*ext=color: */ 224 v++; 225 if (getstring(&c, &v, &e->extension, '=') && 226 0 < e->extension.len) { 227 v++; 228 getstring(&c, &v, &e->color, ':'); 229 e++; 230 continue; 231 } 232 break; 233 234 default: /* :vl=color: */ 235 if (v[0] && v[1] && (v[2] & CHAR) == '=') { 236 for (i = 0; i < nvariables; i++) 237 if ((Char)variables[i].variable[0] == (v[0] & CHAR) && 238 (Char)variables[i].variable[1] == (v[1] & CHAR)) 239 break; 240 if (i < nvariables) { 241 v += 3; 242 getstring(&c, &v, &variables[i].color, ':'); 243 continue; 244 } 245 else 246 stderror(ERR_BADCOLORVAR, v[0], v[1]); 247 } 248 break; 249 } 250 while (*v && (*v & CHAR) != ':') 251 v++; 252 } 253 } 254 255 cleanup_pop_mark(omark); 256 resexit(osetexit); 257 258 nextensions = e - extensions; 259 } 260 261 /* put_color(): 262 */ 263 static void 264 put_color(const Str *color) 265 { 266 size_t i; 267 const char *c = color->s; 268 int original_output_raw = output_raw; 269 270 output_raw = TRUE; 271 cleanup_push(&original_output_raw, output_raw_restore); 272 for (i = color->len; 0 < i; i--) 273 xputchar(*c++); 274 cleanup_until(&original_output_raw); 275 } 276 277 278 /* print_color(): 279 */ 280 static void 281 print_color(const Char *fname, size_t len, Char suffix) 282 { 283 size_t i; 284 char *filename = short2str(fname); 285 char *last = filename + len; 286 Str *color = &variables[VFile].color; 287 288 switch (suffix) { 289 case '>': /* File is a symbolic link pointing to 290 * a directory */ 291 color = &variables[VDir].color; 292 break; 293 case '+': /* File is a hidden directory [aix] or 294 * context dependent [hpux] */ 295 case ':': /* File is network special [hpux] */ 296 break; 297 default: 298 for (i = 0; i < nvariables; i++) 299 if (variables[i].suffix != NOS && 300 (Char)variables[i].suffix == suffix) { 301 color = &variables[i].color; 302 break; 303 } 304 if (i == nvariables) { 305 for (i = 0; i < nextensions; i++) 306 if (len >= extensions[i].extension.len 307 && strncmp(last - extensions[i].extension.len, 308 extensions[i].extension.s, 309 extensions[i].extension.len) == 0) { 310 color = &extensions[i].color; 311 break; 312 } 313 } 314 break; 315 } 316 317 put_color(&variables[VLeft].color); 318 put_color(color); 319 put_color(&variables[VRight].color); 320 } 321 322 323 /* print_with_color(): 324 */ 325 void 326 print_with_color(const Char *filename, size_t len, Char suffix) 327 { 328 if (color_context_lsmF && 329 (haderr ? (didfds ? is2atty : isdiagatty) : 330 (didfds ? is1atty : isoutatty))) { 331 print_color(filename, len, suffix); 332 xprintf("%S", filename); 333 if (0 < variables[VEnd].color.len) 334 put_color(&variables[VEnd].color); 335 else { 336 put_color(&variables[VLeft].color); 337 put_color(&variables[VNormal].color); 338 put_color(&variables[VRight].color); 339 } 340 } 341 else 342 xprintf("%S", filename); 343 xputwchar(suffix); 344 } 345 346 347 #endif /* COLOR_LS_F */ 348