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| Current File : //usr/src/contrib/ncurses/ncurses/tinfo/captoinfo.c |
/****************************************************************************
* Copyright (c) 1998-2006,2008 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
* and: Thomas E. Dickey 1996-on *
****************************************************************************/
/*
* captoinfo.c --- conversion between termcap and terminfo formats
*
* The captoinfo() code was swiped from Ross Ridge's mytinfo package,
* adapted to fit ncurses by Eric S. Raymond <esr@snark.thyrsus.com>.
*
* There is just one entry point:
*
* char *_nc_captoinfo(n, s, parameterized)
*
* Convert value s for termcap string capability named n into terminfo
* format.
*
* This code recognizes all the standard 4.4BSD %-escapes:
*
* %% output `%'
* %d output value as in printf %d
* %2 output value as in printf %2d
* %3 output value as in printf %3d
* %. output value as in printf %c
* %+x add x to value, then do %.
* %>xy if value > x then add y, no output
* %r reverse order of two parameters, no output
* %i increment by one, no output
* %n exclusive-or all parameters with 0140 (Datamedia 2500)
* %B BCD (16*(value/10)) + (value%10), no output
* %D Reverse coding (value - 2*(value%16)), no output (Delta Data).
*
* Also, %02 and %03 are accepted as synonyms for %2 and %3.
*
* Besides all the standard termcap escapes, this translator understands
* the following extended escapes:
*
* used by GNU Emacs termcap libraries
* %a[+*-/=][cp]x GNU arithmetic.
* %m xor the first two parameters by 0177
* %b backup to previous parameter
* %f skip this parameter
*
* used by the University of Waterloo (MFCF) termcap libraries
* %-x subtract parameter FROM char x and output it as a char
* %ax add the character x to parameter
*
* If #define WATERLOO is on, also enable these translations:
*
* %sx subtract parameter FROM the character x
*
* By default, this Waterloo translations are not compiled in, because
* the Waterloo %s conflicts with the way terminfo uses %s in strings for
* function programming.
*
* Note the two definitions of %a: the GNU definition is translated if the
* characters after the 'a' are valid for it, otherwise the UW definition
* is translated.
*/
#include <curses.priv.h>
#include <ctype.h>
#include <tic.h>
MODULE_ID("$Id: captoinfo.c,v 1.52 2008/08/16 19:24:51 tom Exp $")
#define MAX_PUSHED 16 /* max # args we can push onto the stack */
static int stack[MAX_PUSHED]; /* the stack */
static int stackptr; /* the next empty place on the stack */
static int onstack; /* the top of stack */
static int seenm; /* seen a %m */
static int seenn; /* seen a %n */
static int seenr; /* seen a %r */
static int param; /* current parameter */
static char *dp; /* pointer to end of the converted string */
static char *my_string;
static size_t my_length;
static char *
init_string(void)
/* initialize 'my_string', 'my_length' */
{
if (my_string == 0)
my_string = typeMalloc(char, my_length = 256);
if (my_string == 0)
_nc_err_abort(MSG_NO_MEMORY);
*my_string = '\0';
return my_string;
}
static char *
save_string(char *d, const char *const s)
{
size_t have = (d - my_string);
size_t need = have + strlen(s) + 2;
if (need > my_length) {
my_string = (char *) realloc(my_string, my_length = (need + need));
if (my_string == 0)
_nc_err_abort(MSG_NO_MEMORY);
d = my_string + have;
}
(void) strcpy(d, s);
return d + strlen(d);
}
static NCURSES_INLINE char *
save_char(char *s, int c)
{
static char temp[2];
temp[0] = (char) c;
return save_string(s, temp);
}
static void
push(void)
/* push onstack on to the stack */
{
if (stackptr >= MAX_PUSHED)
_nc_warning("string too complex to convert");
else
stack[stackptr++] = onstack;
}
static void
pop(void)
/* pop the top of the stack into onstack */
{
if (stackptr == 0) {
if (onstack == 0)
_nc_warning("I'm confused");
else
onstack = 0;
} else
onstack = stack[--stackptr];
param++;
}
static int
cvtchar(register const char *sp)
/* convert a character to a terminfo push */
{
unsigned char c = 0;
int len;
switch (*sp) {
case '\\':
switch (*++sp) {
case '\'':
case '$':
case '\\':
case '%':
c = (unsigned char) (*sp);
len = 2;
break;
case '\0':
c = '\\';
len = 1;
break;
case '0':
case '1':
case '2':
case '3':
len = 1;
while (isdigit(UChar(*sp))) {
c = 8 * c + (*sp++ - '0');
len++;
}
break;
default:
c = (unsigned char) (*sp);
len = 2;
break;
}
break;
case '^':
c = (*++sp & 0x1f);
len = 2;
break;
default:
c = (unsigned char) (*sp);
len = 1;
}
if (isgraph(c) && c != ',' && c != '\'' && c != '\\' && c != ':') {
dp = save_string(dp, "%\'");
dp = save_char(dp, c);
dp = save_char(dp, '\'');
} else {
dp = save_string(dp, "%{");
if (c > 99)
dp = save_char(dp, c / 100 + '0');
if (c > 9)
dp = save_char(dp, ((int) (c / 10)) % 10 + '0');
dp = save_char(dp, c % 10 + '0');
dp = save_char(dp, '}');
}
return len;
}
static void
getparm(int parm, int n)
/* push n copies of param on the terminfo stack if not already there */
{
if (seenr) {
if (parm == 1)
parm = 2;
else if (parm == 2)
parm = 1;
}
if (onstack == parm) {
if (n > 1) {
_nc_warning("string may not be optimal");
dp = save_string(dp, "%Pa");
while (n--) {
dp = save_string(dp, "%ga");
}
}
return;
}
if (onstack != 0)
push();
onstack = parm;
while (n--) {
dp = save_string(dp, "%p");
dp = save_char(dp, '0' + parm);
}
if (seenn && parm < 3) {
dp = save_string(dp, "%{96}%^");
}
if (seenm && parm < 3) {
dp = save_string(dp, "%{127}%^");
}
}
/*
* Convert a termcap string to terminfo format.
* 'cap' is the relevant terminfo capability index.
* 's' is the string value of the capability.
* 'parameterized' tells what type of translations to do:
* % translations if 1
* pad translations if >=0
*/
NCURSES_EXPORT(char *)
_nc_captoinfo(const char *cap, const char *s, int const parameterized)
{
const char *capstart;
stackptr = 0;
onstack = 0;
seenm = 0;
seenn = 0;
seenr = 0;
param = 1;
dp = init_string();
/* skip the initial padding (if we haven't been told not to) */
capstart = 0;
if (s == 0)
s = "";
if (parameterized >= 0 && isdigit(UChar(*s)))
for (capstart = s;; s++)
if (!(isdigit(UChar(*s)) || *s == '*' || *s == '.'))
break;
while (*s != '\0') {
switch (*s) {
case '%':
s++;
if (parameterized < 1) {
dp = save_char(dp, '%');
break;
}
switch (*s++) {
case '%':
dp = save_char(dp, '%');
break;
case 'r':
if (seenr++ == 1) {
_nc_warning("saw %%r twice in %s", cap);
}
break;
case 'm':
if (seenm++ == 1) {
_nc_warning("saw %%m twice in %s", cap);
}
break;
case 'n':
if (seenn++ == 1) {
_nc_warning("saw %%n twice in %s", cap);
}
break;
case 'i':
dp = save_string(dp, "%i");
break;
case '6':
case 'B':
getparm(param, 1);
dp = save_string(dp, "%{10}%/%{16}%*");
getparm(param, 1);
dp = save_string(dp, "%{10}%m%+");
break;
case '8':
case 'D':
getparm(param, 2);
dp = save_string(dp, "%{2}%*%-");
break;
case '>':
getparm(param, 2);
/* %?%{x}%>%t%{y}%+%; */
dp = save_string(dp, "%?");
s += cvtchar(s);
dp = save_string(dp, "%>%t");
s += cvtchar(s);
dp = save_string(dp, "%+%;");
break;
case 'a':
if ((*s == '=' || *s == '+' || *s == '-'
|| *s == '*' || *s == '/')
&& (s[1] == 'p' || s[1] == 'c')
&& s[2] != '\0') {
int l;
l = 2;
if (*s != '=')
getparm(param, 1);
if (s[1] == 'p') {
getparm(param + s[2] - '@', 1);
if (param != onstack) {
pop();
param--;
}
l++;
} else
l += cvtchar(s + 2);
switch (*s) {
case '+':
dp = save_string(dp, "%+");
break;
case '-':
dp = save_string(dp, "%-");
break;
case '*':
dp = save_string(dp, "%*");
break;
case '/':
dp = save_string(dp, "%/");
break;
case '=':
if (seenr) {
if (param == 1)
onstack = 2;
else if (param == 2)
onstack = 1;
else
onstack = param;
} else
onstack = param;
break;
}
s += l;
break;
}
getparm(param, 1);
s += cvtchar(s);
dp = save_string(dp, "%+");
break;
case '+':
getparm(param, 1);
s += cvtchar(s);
dp = save_string(dp, "%+%c");
pop();
break;
case 's':
#ifdef WATERLOO
s += cvtchar(s);
getparm(param, 1);
dp = save_string(dp, "%-");
#else
getparm(param, 1);
dp = save_string(dp, "%s");
pop();
#endif /* WATERLOO */
break;
case '-':
s += cvtchar(s);
getparm(param, 1);
dp = save_string(dp, "%-%c");
pop();
break;
case '.':
getparm(param, 1);
dp = save_string(dp, "%c");
pop();
break;
case '0': /* not clear any of the historical termcaps did this */
if (*s == '3')
goto see03;
else if (*s != '2')
goto invalid;
/* FALLTHRU */
case '2':
getparm(param, 1);
dp = save_string(dp, "%2d");
pop();
break;
case '3':
see03:
getparm(param, 1);
dp = save_string(dp, "%3d");
pop();
break;
case 'd':
getparm(param, 1);
dp = save_string(dp, "%d");
pop();
break;
case 'f':
param++;
break;
case 'b':
param--;
break;
case '\\':
dp = save_string(dp, "%\\");
break;
default:
invalid:
dp = save_char(dp, '%');
s--;
_nc_warning("unknown %% code %s (%#x) in %s",
unctrl((chtype) *s), UChar(*s), cap);
break;
}
break;
#ifdef REVISIBILIZE
case '\\':
dp = save_char(dp, *s++);
dp = save_char(dp, *s++);
break;
case '\n':
dp = save_string(dp, "\\n");
s++;
break;
case '\t':
dp = save_string(dp, "\\t");
s++;
break;
case '\r':
dp = save_string(dp, "\\r");
s++;
break;
case '\200':
dp = save_string(dp, "\\0");
s++;
break;
case '\f':
dp = save_string(dp, "\\f");
s++;
break;
case '\b':
dp = save_string(dp, "\\b");
s++;
break;
case ' ':
dp = save_string(dp, "\\s");
s++;
break;
case '^':
dp = save_string(dp, "\\^");
s++;
break;
case ':':
dp = save_string(dp, "\\:");
s++;
break;
case ',':
dp = save_string(dp, "\\,");
s++;
break;
default:
if (*s == '\033') {
dp = save_string(dp, "\\E");
s++;
} else if (*s > 0 && *s < 32) {
dp = save_char(dp, '^');
dp = save_char(dp, *s + '@');
s++;
} else if (*s <= 0 || *s >= 127) {
dp = save_char(dp, '\\');
dp = save_char(dp, ((*s & 0300) >> 6) + '0');
dp = save_char(dp, ((*s & 0070) >> 3) + '0');
dp = save_char(dp, (*s & 0007) + '0');
s++;
} else
dp = save_char(dp, *s++);
break;
#else
default:
dp = save_char(dp, *s++);
break;
#endif
}
}
/*
* Now, if we stripped off some leading padding, add it at the end
* of the string as mandatory padding.
*/
if (capstart) {
dp = save_string(dp, "$<");
for (s = capstart;; s++)
if (isdigit(UChar(*s)) || *s == '*' || *s == '.')
dp = save_char(dp, *s);
else
break;
dp = save_string(dp, "/>");
}
(void) save_char(dp, '\0');
return (my_string);
}
/*
* Check for an expression that corresponds to "%B" (BCD):
* (parameter / 10) * 16 + (parameter % 10)
*/
static int
bcd_expression(const char *str)
{
/* leave this non-const for HPUX */
static char fmt[] = "%%p%c%%{10}%%/%%{16}%%*%%p%c%%{10}%%m%%+";
int len = 0;
char ch1, ch2;
if (sscanf(str, fmt, &ch1, &ch2) == 2
&& isdigit(UChar(ch1))
&& isdigit(UChar(ch2))
&& (ch1 == ch2)) {
len = 28;
#ifndef NDEBUG
{
char buffer[80];
int tst;
sprintf(buffer, fmt, ch1, ch2);
tst = strlen(buffer) - 1;
assert(len == tst);
}
#endif
}
return len;
}
static char *
save_tc_char(char *bufptr, int c1)
{
char temp[80];
if (is7bits(c1) && isprint(c1)) {
if (c1 == ':' || c1 == '\\')
bufptr = save_char(bufptr, '\\');
bufptr = save_char(bufptr, c1);
} else {
if (c1 == (c1 & 0x1f)) /* iscntrl() returns T on 255 */
(void) strcpy(temp, unctrl((chtype) c1));
else
(void) sprintf(temp, "\\%03o", c1);
bufptr = save_string(bufptr, temp);
}
return bufptr;
}
static char *
save_tc_inequality(char *bufptr, int c1, int c2)
{
bufptr = save_string(bufptr, "%>");
bufptr = save_tc_char(bufptr, c1);
bufptr = save_tc_char(bufptr, c2);
return bufptr;
}
/*
* Here are the capabilities infotocap assumes it can translate to:
*
* %% output `%'
* %d output value as in printf %d
* %2 output value as in printf %2d
* %3 output value as in printf %3d
* %. output value as in printf %c
* %+c add character c to value, then do %.
* %>xy if value > x then add y, no output
* %r reverse order of two parameters, no output
* %i increment by one, no output
* %n exclusive-or all parameters with 0140 (Datamedia 2500)
* %B BCD (16*(value/10)) + (value%10), no output
* %D Reverse coding (value - 2*(value%16)), no output (Delta Data).
* %m exclusive-or all parameters with 0177 (not in 4.4BSD)
*/
/*
* Convert a terminfo string to termcap format. Parameters are as in
* _nc_captoinfo().
*/
NCURSES_EXPORT(char *)
_nc_infotocap(const char *cap GCC_UNUSED, const char *str, int const parameterized)
{
int seenone = 0, seentwo = 0, saw_m = 0, saw_n = 0;
const char *padding;
const char *trimmed = 0;
char ch1 = 0, ch2 = 0;
char *bufptr = init_string();
int len;
bool syntax_error = FALSE;
/* we may have to move some trailing mandatory padding up front */
padding = str + strlen(str) - 1;
if (padding > str && *padding == '>' && *--padding == '/') {
--padding;
while (isdigit(UChar(*padding)) || *padding == '.' || *padding == '*')
padding--;
if (padding > str && *padding == '<' && *--padding == '$')
trimmed = padding;
padding += 2;
while (isdigit(UChar(*padding)) || *padding == '.' || *padding == '*')
bufptr = save_char(bufptr, *padding++);
}
for (; *str && str != trimmed; str++) {
int c1, c2;
char *cp = 0;
if (str[0] == '\\' && (str[1] == '^' || str[1] == ',')) {
bufptr = save_char(bufptr, *++str);
} else if (str[0] == '$' && str[1] == '<') { /* discard padding */
str += 2;
while (isdigit(UChar(*str))
|| *str == '.'
|| *str == '*'
|| *str == '/'
|| *str == '>')
str++;
--str;
} else if (str[0] == '%' && str[1] == '%') { /* escaped '%' */
bufptr = save_string(bufptr, "%%");
++str;
} else if (*str != '%' || (parameterized < 1)) {
bufptr = save_char(bufptr, *str);
} else if (sscanf(str, "%%?%%{%d}%%>%%t%%{%d}%%+%%;", &c1, &c2) == 2) {
str = strchr(str, ';');
bufptr = save_tc_inequality(bufptr, c1, c2);
} else if (sscanf(str, "%%?%%{%d}%%>%%t%%'%c'%%+%%;", &c1, &ch2) == 2) {
str = strchr(str, ';');
bufptr = save_tc_inequality(bufptr, c1, c2);
} else if (sscanf(str, "%%?%%'%c'%%>%%t%%{%d}%%+%%;", &ch1, &c2) == 2) {
str = strchr(str, ';');
bufptr = save_tc_inequality(bufptr, c1, c2);
} else if (sscanf(str, "%%?%%'%c'%%>%%t%%'%c'%%+%%;", &ch1, &ch2) == 2) {
str = strchr(str, ';');
bufptr = save_tc_inequality(bufptr, c1, c2);
} else if ((len = bcd_expression(str)) != 0) {
str += len;
bufptr = save_string(bufptr, "%B");
} else if ((sscanf(str, "%%{%d}%%+%%c", &c1) == 1
|| sscanf(str, "%%'%c'%%+%%c", &ch1) == 1)
&& (cp = strchr(str, '+'))) {
str = cp + 2;
bufptr = save_string(bufptr, "%+");
if (ch1)
c1 = ch1;
bufptr = save_tc_char(bufptr, c1);
}
/* FIXME: this "works" for 'delta' */
else if (strncmp(str, "%{2}%*%-", 8) == 0) {
str += 7;
bufptr = save_string(bufptr, "%D");
} else if (strncmp(str, "%{96}%^", 7) == 0) {
str += 6;
if (saw_m++ == 0) {
bufptr = save_string(bufptr, "%n");
}
} else if (strncmp(str, "%{127}%^", 8) == 0) {
str += 7;
if (saw_n++ == 0) {
bufptr = save_string(bufptr, "%m");
}
} else { /* cm-style format element */
str++;
switch (*str) {
case '%':
bufptr = save_char(bufptr, '%');
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
bufptr = save_char(bufptr, '%');
while (isdigit(UChar(*str)))
bufptr = save_char(bufptr, *str++);
if (strchr("doxX.", *str)) {
if (*str != 'd') /* termcap doesn't have octal, hex */
return 0;
}
break;
case 'd':
bufptr = save_string(bufptr, "%d");
break;
case 'c':
bufptr = save_string(bufptr, "%.");
break;
/*
* %s isn't in termcap, but it's convenient to pass it through
* so we can represent things like terminfo pfkey strings in
* termcap notation.
*/
case 's':
bufptr = save_string(bufptr, "%s");
break;
case 'p':
str++;
if (*str == '1')
seenone = 1;
else if (*str == '2') {
if (!seenone && !seentwo) {
bufptr = save_string(bufptr, "%r");
seentwo++;
}
} else if (*str >= '3')
return (0);
break;
case 'i':
bufptr = save_string(bufptr, "%i");
break;
default:
bufptr = save_char(bufptr, *str);
syntax_error = TRUE;
break;
} /* endswitch (*str) */
} /* endelse (*str == '%') */
/*
* 'str' always points to the end of what was scanned in this step,
* but that may not be the end of the string.
*/
assert(str != 0);
if (*str == '\0')
break;
} /* endwhile (*str) */
return (syntax_error ? NULL : my_string);
}
#ifdef MAIN
int curr_line;
int
main(int argc, char *argv[])
{
int c, tc = FALSE;
while ((c = getopt(argc, argv, "c")) != EOF)
switch (c) {
case 'c':
tc = TRUE;
break;
}
curr_line = 0;
for (;;) {
char buf[BUFSIZ];
++curr_line;
if (fgets(buf, sizeof(buf), stdin) == 0)
break;
buf[strlen(buf) - 1] = '\0';
_nc_set_source(buf);
if (tc) {
char *cp = _nc_infotocap("to termcap", buf, 1);
if (cp)
(void) fputs(cp, stdout);
} else
(void) fputs(_nc_captoinfo("to terminfo", buf, 1), stdout);
(void) putchar('\n');
}
return (0);
}
#endif /* MAIN */
#if NO_LEAKS
NCURSES_EXPORT(void)
_nc_captoinfo_leaks(void)
{
if (my_string != 0) {
FreeAndNull(my_string);
}
my_length = 0;
}
#endif