/* $Header: /src/pub/tcsh/tw.color.c,v 1.11 2002/06/25 19:02:11 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("$Id: tw.color.c,v 1.11 2002/06/25 19:02:11 christos Exp $")
#include "tw.h"
#include "ed.h"
#include "tc.h"
#ifdef COLOR_LS_F
typedef struct {
char *s;
int 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) */
};
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 int nextensions = 0;
static char *colors = NULL;
bool color_context_ls = FALSE; /* do colored ls */
static bool color_context_lsmF = FALSE; /* do colored ls-F */
static bool getstring __P((char **, const Char **, Str *, int));
static void put_color __P((Str *));
static void print_color __P((Char *, size_t, int));
/* set_color_context():
*/
void
set_color_context()
{
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 bool
getstring(dp, sp, pd, f)
char **dp; /* dest buffer */
const Char **sp; /* source buffer */
Str *pd; /* pointer to dest buffer */
int f; /* final character */
{
const Char *s = *sp;
char *d = *dp;
int sc;
while (*s && (*s & CHAR) != f && (*s & CHAR) != ':') {
if ((*s & CHAR) == '\\' || (*s & CHAR) == '^') {
if ((sc = parseescape(&s)) == -1)
return 0;
else
*d++ = (char) sc;
}
else
*d++ = *s++ & CHAR;
}
pd->s = *dp;
pd->len = (int) (d - *dp);
*sp = s;
*dp = d;
return *s == f;
}
/* parseLS_COLORS():
* Parse the LS_COLORS environment variable
*/
void
parseLS_COLORS(value)
Char *value; /* LS_COLOR variable's value */
{
int i;
size_t len;
const Char *v; /* pointer in value */
char *c; /* pointer in colors */
Extension *e; /* pointer in extensions */
jmp_buf_t osetexit;
(void) &e;
/* init */
if (extensions)
xfree((ptr_t) 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 = (Extension *) xmalloc((size_t) (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. */
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 (variables[i].variable[0] == (v[0] & 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++;
}
}
resexit(osetexit);
nextensions = (int) (e - extensions);
}
/* put_color():
*/
static void
put_color(color)
Str *color;
{
extern bool output_raw; /* PWP: in sh.print.c */
size_t i;
char *c = color->s;
bool original_output_raw = output_raw;
output_raw = TRUE;
for (i = color->len; 0 < i; i--)
xputchar(*c++);
output_raw = original_output_raw;
}
/* print_color():
*/
static void
print_color(fname, len, suffix)
Char *fname;
size_t len;
int suffix;
{
int 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 &&
variables[i].suffix == suffix) {
color = &variables[i].color;
break;
}
if (i == nvariables) {
for (i = 0; i < nextensions; i++)
if (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(filename, len, suffix)
Char *filename;
size_t len;
int 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);
}
xputchar(suffix);
}
else
xprintf("%S%c", filename, suffix);
}
#endif /* COLOR_LS_F */
