Import tcsh-6.17.00
[dragonfly.git] / contrib / tcsh-6 / tw.color.c
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57e3f2b5 1/* $Header: /p/tcsh/cvsroot/tcsh/tw.color.c,v 1.25 2008/10/17 19:57:33 christos Exp $ */
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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
57e3f2b5 35RCSID("$tcsh: tw.color.c,v 1.25 2008/10/17 19:57:33 christos Exp $")
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36
37#include "tw.h"
38#include "ed.h"
39#include "tc.h"
40
41#ifdef COLOR_LS_F
42
43typedef 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
56typedef struct {
57 const char suffix;
58 const char *variable;
59 Str color;
60 Str defaultcolor;
61} Variable;
62
63static 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 */
57e3f2b5 88 VAR(NOS, "rs", "0"), /* Reset to normal color */
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89};
90
91enum 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
98typedef struct {
99 Str extension; /* file extension */
100 Str color; /* color string */
101} Extension;
102
103static Extension *extensions = NULL;
104static size_t nextensions = 0;
105
106static char *colors = NULL;
107int color_context_ls = FALSE; /* do colored ls */
108static int color_context_lsmF = FALSE; /* do colored ls-F */
109
110static int getstring (char **, const Char **, Str *, int);
111static void put_color (const Str *);
112static void print_color (const Char *, size_t, Char);
113
114/* set_color_context():
115 */
116void
117set_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 */
143static int
144getstring(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 */
171void
172parseLS_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 */
263static void
264put_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 */
280static void
281print_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 */
325void
326print_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 */