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+/* $Header: /p/tcsh/cvsroot/tcsh/tw.color.c,v 1.27 2010/08/19 05:52:19 christos Exp $ */
+/*
+ * tw.color.c: builtin color ls-F
+ */
+/*-
+ * Copyright (c) 1998 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include "sh.h"
+
+RCSID("$tcsh: tw.color.c,v 1.27 2010/08/19 05:52:19 christos Exp $")
+
+#include "tw.h"
+#include "ed.h"
+#include "tc.h"
+
+#ifdef COLOR_LS_F
+
+typedef struct {
+ const char *s;
+ size_t len;
+} Str;
+
+
+#define VAR(suffix,variable,defaultcolor) \
+{ \
+ suffix, variable, { defaultcolor, sizeof(defaultcolor) - 1 }, \
+ { defaultcolor, sizeof(defaultcolor) - 1 } \
+}
+#define NOS '\0' /* no suffix */
+
+typedef struct {
+ const char suffix;
+ const char *variable;
+ Str color;
+ Str defaultcolor;
+} Variable;
+
+static Variable variables[] = {
+ VAR('/', "di", "01;34"), /* Directory */
+ VAR('@', "ln", "01;36"), /* Symbolic link */
+ VAR('&', "or", ""), /* Orphanned symbolic link (defaults to ln) */
+ VAR('|', "pi", "33"), /* Named pipe (FIFO) */
+ VAR('=', "so", "01;35"), /* Socket */
+ VAR('>', "do", "01;35"), /* Door (solaris fast ipc mechanism) */
+ VAR('#', "bd", "01;33"), /* Block device */
+ VAR('%', "cd", "01;33"), /* Character device */
+ VAR('*', "ex", "01;32"), /* Executable file */
+ VAR(NOS, "fi", "0"), /* Regular file */
+ VAR(NOS, "no", "0"), /* Normal (non-filename) text */
+ VAR(NOS, "mi", ""), /* Missing file (defaults to fi) */
+#ifdef IS_ASCII
+ VAR(NOS, "lc", "\033["), /* Left code (ASCII) */
+#else
+ VAR(NOS, "lc", "\x27["), /* Left code (EBCDIC)*/
+#endif
+ VAR(NOS, "rc", "m"), /* Right code */
+ VAR(NOS, "ec", ""), /* End code (replaces lc+no+rc) */
+ VAR(NOS, "su", ""), /* Setuid file (u+s) */
+ VAR(NOS, "sg", ""), /* Setgid file (g+s) */
+ VAR(NOS, "tw", ""), /* Sticky and other writable dir (+t,o+w) */
+ VAR(NOS, "ow", ""), /* Other writable dir (o+w) but not sticky */
+ VAR(NOS, "st", ""), /* Sticky dir (+t) but not other writable */
+ VAR(NOS, "rs", "0"), /* Reset to normal color */
+ VAR(NOS, "hl", "44;37"), /* Reg file extra hard links, obsolete? */
+ VAR(NOS, "mh", "44;37"), /* Reg file extra hard links */
+ VAR(NOS, "ca", "30;41"), /* File with capability */
+};
+
+enum FileType {
+ VDir, VSym, VOrph, VPipe, VSock, VDoor, VBlock, VChr, VExe,
+ VFile, VNormal, VMiss, VLeft, VRight, VEnd
+};
+
+#define nvariables (sizeof(variables)/sizeof(variables[0]))
+
+typedef struct {
+ Str extension; /* file extension */
+ Str color; /* color string */
+} Extension;
+
+static Extension *extensions = NULL;
+static size_t nextensions = 0;
+
+static char *colors = NULL;
+int color_context_ls = FALSE; /* do colored ls */
+static int color_context_lsmF = FALSE; /* do colored ls-F */
+
+static int getstring (char **, const Char **, Str *, int);
+static void put_color (const Str *);
+static void print_color (const Char *, size_t, Char);
+
+/* set_color_context():
+ */
+void
+set_color_context(void)
+{
+ struct varent *vp = adrof(STRcolor);
+
+ if (vp == NULL || vp->vec == NULL) {
+ color_context_ls = FALSE;
+ color_context_lsmF = FALSE;
+ } else if (!vp->vec[0] || vp->vec[0][0] == '\0') {
+ color_context_ls = TRUE;
+ color_context_lsmF = TRUE;
+ } else {
+ size_t i;
+
+ color_context_ls = FALSE;
+ color_context_lsmF = FALSE;
+ for (i = 0; vp->vec[i]; i++)
+ if (Strcmp(vp->vec[i], STRls) == 0)
+ color_context_ls = TRUE;
+ else if (Strcmp(vp->vec[i], STRlsmF) == 0)
+ color_context_lsmF = TRUE;
+ }
+}
+
+
+/* getstring():
+ */
+static int
+getstring(char **dp, const Char **sp, Str *pd, int f)
+{
+ const Char *s = *sp;
+ char *d = *dp;
+ eChar sc;
+
+ while (*s && (*s & CHAR) != (Char)f && (*s & CHAR) != ':') {
+ if ((*s & CHAR) == '\\' || (*s & CHAR) == '^') {
+ if ((sc = parseescape(&s)) == CHAR_ERR)
+ return 0;
+ }
+ else
+ sc = *s++ & CHAR;
+ d += one_wctomb(d, sc);
+ }
+
+ pd->s = *dp;
+ pd->len = d - *dp;
+ *sp = s;
+ *dp = d;
+ return *s == (Char)f;
+}
+
+
+/* parseLS_COLORS():
+ * Parse the LS_COLORS environment variable
+ */
+void
+parseLS_COLORS(const Char *value)
+{
+ size_t i, len;
+ const Char *v; /* pointer in value */
+ char *c; /* pointer in colors */
+ Extension *volatile e; /* pointer in extensions */
+ jmp_buf_t osetexit;
+ size_t omark;
+
+ (void) &e;
+
+ /* init */
+ xfree(extensions);
+ for (i = 0; i < nvariables; i++)
+ variables[i].color = variables[i].defaultcolor;
+ colors = NULL;
+ extensions = NULL;
+ nextensions = 0;
+
+ if (value == NULL)
+ return;
+
+ len = Strlen(value);
+ /* allocate memory */
+ i = 1;
+ for (v = value; *v; v++)
+ if ((*v & CHAR) == ':')
+ i++;
+ extensions = xmalloc(len + i * sizeof(Extension));
+ colors = i * sizeof(Extension) + (char *)extensions;
+ nextensions = 0;
+
+ /* init pointers */
+ v = value;
+ c = colors;
+ e = &extensions[0];
+
+ /* Prevent from crashing if unknown parameters are given. */
+
+ omark = cleanup_push_mark();
+ getexit(osetexit);
+
+ if (setexit() == 0) {
+
+ /* parse */
+ while (*v) {
+ switch (*v & CHAR) {
+ case ':':
+ v++;
+ continue;
+
+ case '*': /* :*ext=color: */
+ v++;
+ if (getstring(&c, &v, &e->extension, '=') &&
+ 0 < e->extension.len) {
+ v++;
+ getstring(&c, &v, &e->color, ':');
+ e++;
+ continue;
+ }
+ break;
+
+ default: /* :vl=color: */
+ if (v[0] && v[1] && (v[2] & CHAR) == '=') {
+ for (i = 0; i < nvariables; i++)
+ if ((Char)variables[i].variable[0] == (v[0] & CHAR) &&
+ (Char)variables[i].variable[1] == (v[1] & CHAR))
+ break;
+ if (i < nvariables) {
+ v += 3;
+ getstring(&c, &v, &variables[i].color, ':');
+ continue;
+ }
+ else
+ stderror(ERR_BADCOLORVAR, v[0], v[1]);
+ }
+ break;
+ }
+ while (*v && (*v & CHAR) != ':')
+ v++;
+ }
+ }
+
+ cleanup_pop_mark(omark);
+ resexit(osetexit);
+
+ nextensions = e - extensions;
+}
+
+/* put_color():
+ */
+static void
+put_color(const Str *color)
+{
+ size_t i;
+ const char *c = color->s;
+ int original_output_raw = output_raw;
+
+ output_raw = TRUE;
+ cleanup_push(&original_output_raw, output_raw_restore);
+ for (i = color->len; 0 < i; i--)
+ xputchar(*c++);
+ cleanup_until(&original_output_raw);
+}
+
+
+/* print_color():
+ */
+static void
+print_color(const Char *fname, size_t len, Char suffix)
+{
+ size_t i;
+ char *filename = short2str(fname);
+ char *last = filename + len;
+ Str *color = &variables[VFile].color;
+
+ switch (suffix) {
+ case '>': /* File is a symbolic link pointing to
+ * a directory */
+ color = &variables[VDir].color;
+ break;
+ case '+': /* File is a hidden directory [aix] or
+ * context dependent [hpux] */
+ case ':': /* File is network special [hpux] */
+ break;
+ default:
+ for (i = 0; i < nvariables; i++)
+ if (variables[i].suffix != NOS &&
+ (Char)variables[i].suffix == suffix) {
+ color = &variables[i].color;
+ break;
+ }
+ if (i == nvariables) {
+ for (i = 0; i < nextensions; i++)
+ if (len >= extensions[i].extension.len
+ && strncmp(last - extensions[i].extension.len,
+ extensions[i].extension.s,
+ extensions[i].extension.len) == 0) {
+ color = &extensions[i].color;
+ break;
+ }
+ }
+ break;
+ }
+
+ put_color(&variables[VLeft].color);
+ put_color(color);
+ put_color(&variables[VRight].color);
+}
+
+
+/* print_with_color():
+ */
+void
+print_with_color(const Char *filename, size_t len, Char suffix)
+{
+ if (color_context_lsmF &&
+ (haderr ? (didfds ? is2atty : isdiagatty) :
+ (didfds ? is1atty : isoutatty))) {
+ print_color(filename, len, suffix);
+ xprintf("%S", filename);
+ if (0 < variables[VEnd].color.len)
+ put_color(&variables[VEnd].color);
+ else {
+ put_color(&variables[VLeft].color);
+ put_color(&variables[VNormal].color);
+ put_color(&variables[VRight].color);
+ }
+ }
+ else
+ xprintf("%S", filename);
+ xputwchar(suffix);
+}
+
+
+#endif /* COLOR_LS_F */
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