358 lines
9.0 KiB
C
358 lines
9.0 KiB
C
/* $Header: /src/pub/tcsh/tw.color.c,v 1.8 2001/03/18 19:06:32 christos Exp $ */
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/*
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* tw.color.c: builtin color ls-F
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*/
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/*-
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* Copyright (c) 1998 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "sh.h"
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RCSID("$Id: tw.color.c,v 1.8 2001/03/18 19:06:32 christos Exp $")
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#include "tw.h"
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#include "ed.h"
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#include "tc.h"
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#ifdef COLOR_LS_F
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typedef struct {
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char *s;
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int len;
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} Str;
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#define VAR(suffix,variable,defaultcolor) \
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{ \
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suffix, variable, { defaultcolor, sizeof(defaultcolor) - 1 }, \
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{ defaultcolor, sizeof(defaultcolor) - 1 } \
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}
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#define NOS '\0' /* no suffix */
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typedef struct {
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const char suffix;
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const char *variable;
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Str color;
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Str defaultcolor;
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} Variable;
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static Variable variables[] = {
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VAR('/', "di", "01;34"), /* Directory */
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VAR('@', "ln", "01;36"), /* Symbolic link */
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VAR('&', "or", ""), /* Orphanned symbolic link (defaults to ln) */
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VAR('|', "pi", "33"), /* Named pipe (FIFO) */
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VAR('=', "so", "01;35"), /* Socket */
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VAR('>', "do", "01;35"), /* Door (solaris fast ipc mechanism) */
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VAR('#', "bd", "01;33"), /* Block device */
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VAR('%', "cd", "01;33"), /* Character device */
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VAR('*', "ex", "01;32"), /* Executable file */
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VAR(NOS, "fi", "0"), /* Regular file */
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VAR(NOS, "no", "0"), /* Normal (non-filename) text */
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VAR(NOS, "mi", ""), /* Missing file (defaults to fi) */
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#ifdef IS_ASCII
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VAR(NOS, "lc", "\033["), /* Left code (ASCII) */
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#else
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VAR(NOS, "lc", "\x27["), /* Left code (EBCDIC)*/
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#endif
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VAR(NOS, "rc", "m"), /* Right code */
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VAR(NOS, "ec", ""), /* End code (replaces lc+no+rc) */
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};
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enum FileType {
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VDir, VSym, VOrph, VPipe, VSock, VDoor, VBlock, VChr, VExe,
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VFile, VNormal, VMiss, VLeft, VRight, VEnd
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};
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#define nvariables (sizeof(variables)/sizeof(variables[0]))
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typedef struct {
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Str extension; /* file extension */
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Str color; /* color string */
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} Extension;
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static Extension *extensions = NULL;
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static int nextensions = 0;
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static char *colors = NULL;
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bool color_context_ls = FALSE; /* do colored ls */
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static bool color_context_lsmF = FALSE; /* do colored ls-F */
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static bool getstring __P((char **, const Char **, Str *, int));
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static void put_color __P((Str *));
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static void print_color __P((Char *, size_t, int));
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/* set_color_context():
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*/
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void
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set_color_context()
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{
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struct varent *vp = adrof(STRcolor);
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if (!vp) {
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color_context_ls = FALSE;
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color_context_lsmF = FALSE;
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}
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else if (!vp->vec[0] || vp->vec[0][0] == '\0') {
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color_context_ls = TRUE;
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color_context_lsmF = TRUE;
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}
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else {
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size_t i;
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color_context_ls = FALSE;
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color_context_lsmF = FALSE;
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for (i = 0; vp->vec[i]; i++)
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if (Strcmp(vp->vec[i], STRls) == 0)
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color_context_ls = TRUE;
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else if (Strcmp(vp->vec[i], STRlsmF) == 0)
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color_context_lsmF = TRUE;
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}
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}
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/* getstring():
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*/
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static bool
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getstring(dp, sp, pd, f)
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char **dp; /* dest buffer */
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const Char **sp; /* source buffer */
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Str *pd; /* pointer to dest buffer */
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int f; /* final character */
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{
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const Char *s = *sp;
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char *d = *dp;
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int sc;
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while (*s && (*s & CHAR) != f && (*s & CHAR) != ':') {
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if ((*s & CHAR) == '\\' || (*s & CHAR) == '^') {
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if ((sc = parseescape(&s)) == -1)
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return 0;
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else
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*d++ = (char) sc;
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}
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else
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*d++ = *s++ & CHAR;
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}
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pd->s = *dp;
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pd->len = (int) (d - *dp);
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*sp = s;
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*dp = d;
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return *s == f;
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}
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/* parseLS_COLORS():
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* Parse the LS_COLORS environment variable
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*/
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void
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parseLS_COLORS(value)
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Char *value; /* LS_COLOR variable's value */
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{
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int i;
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size_t len;
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const Char *v; /* pointer in value */
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char *c; /* pointer in colors */
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Extension *e; /* pointer in extensions */
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jmp_buf_t osetexit;
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/* init */
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if (extensions)
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xfree((ptr_t) extensions);
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for (i = 0; i < nvariables; i++)
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variables[i].color = variables[i].defaultcolor;
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colors = NULL;
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extensions = NULL;
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nextensions = 0;
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if (value == NULL)
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return;
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len = Strlen(value);
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/* allocate memory */
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i = 1;
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for (v = value; *v; v++)
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if ((*v & CHAR) == ':')
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i++;
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extensions = (Extension *) xmalloc((size_t) (len + i * sizeof(Extension)));
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colors = i * sizeof(Extension) + (char *)extensions;
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nextensions = 0;
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/* init pointers */
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v = value;
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c = colors;
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e = &extensions[0];
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/* Prevent from crashing if unknown parameters are given. */
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getexit(osetexit);
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if (setexit() == 0) {
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/* parse */
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while (*v) {
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switch (*v & CHAR) {
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case ':':
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v++;
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continue;
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case '*': /* :*ext=color: */
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v++;
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if (getstring(&c, &v, &e->extension, '=') &&
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0 < e->extension.len) {
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v++;
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getstring(&c, &v, &e->color, ':');
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e++;
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continue;
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}
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break;
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default: /* :vl=color: */
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if (v[0] && v[1] && (v[2] & CHAR) == '=') {
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for (i = 0; i < nvariables; i++)
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if (variables[i].variable[0] == (v[0] & CHAR) &&
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variables[i].variable[1] == (v[1] & CHAR))
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break;
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if (i < nvariables) {
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v += 3;
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getstring(&c, &v, &variables[i].color, ':');
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continue;
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}
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else
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stderror(ERR_BADCOLORVAR, v[0], v[1]);
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}
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break;
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}
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while (*v && (*v & CHAR) != ':')
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v++;
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}
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}
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resexit(osetexit);
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nextensions = (int) (e - extensions);
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}
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/* put_color():
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*/
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static void
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put_color(color)
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Str *color;
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{
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extern bool output_raw; /* PWP: in sh.print.c */
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size_t i;
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char *c = color->s;
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bool original_output_raw = output_raw;
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output_raw = TRUE;
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for (i = color->len; 0 < i; i--)
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xputchar(*c++);
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output_raw = original_output_raw;
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}
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/* print_color():
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*/
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static void
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print_color(fname, len, suffix)
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Char *fname;
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size_t len;
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int suffix;
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{
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int i;
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char *filename = short2str(fname);
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char *last = filename + len;
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Str *color = &variables[VFile].color;
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switch (suffix) {
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case '>': /* File is a symbolic link pointing to
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* a directory */
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color = &variables[VDir].color;
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break;
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case '+': /* File is a hidden directory [aix] or
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* context dependent [hpux] */
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case ':': /* File is network special [hpux] */
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break;
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default:
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for (i = 0; i < nvariables; i++)
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if (variables[i].suffix != NOS &&
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variables[i].suffix == suffix) {
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color = &variables[i].color;
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break;
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}
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if (i == nvariables) {
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for (i = 0; i < nextensions; i++)
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if (strncmp(last - extensions[i].extension.len,
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extensions[i].extension.s,
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extensions[i].extension.len) == 0) {
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color = &extensions[i].color;
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break;
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}
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}
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break;
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}
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put_color(&variables[VLeft].color);
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put_color(color);
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put_color(&variables[VRight].color);
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}
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/* print_with_color():
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*/
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void
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print_with_color(filename, len, suffix)
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Char *filename;
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size_t len;
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int suffix;
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{
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if (color_context_lsmF &&
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(haderr ? (didfds ? is2atty : isdiagatty) :
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(didfds ? is1atty : isoutatty))) {
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print_color(filename, len, suffix);
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xprintf("%S", filename);
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if (0 < variables[VEnd].color.len)
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put_color(&variables[VEnd].color);
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else {
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put_color(&variables[VLeft].color);
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put_color(&variables[VNormal].color);
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put_color(&variables[VRight].color);
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}
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xputchar(suffix);
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}
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else
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xprintf("%S%c", filename, suffix);
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}
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#endif /* COLOR_LS_F */
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