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-rw-r--r--lib/termcap/tparam.c345
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diff --git a/lib/termcap/tparam.c b/lib/termcap/tparam.c
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+++ b/lib/termcap/tparam.c
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+/* tparam.c - merge parameters into a termcap entry string. */
+
+/* Copyright (C) 1985, 1986, 1993,1994, 1995, 1998, 2001,2003,2005,2006,2008,2009 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Bash is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* Emacs config.h may rename various library functions such as malloc. */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#else
+extern char *getenv ();
+extern char *malloc ();
+extern char *realloc ();
+#endif
+
+#if defined (HAVE_STRING_H)
+#include <string.h>
+#endif
+
+#if !defined (HAVE_BCOPY) && (defined (HAVE_STRING_H) || defined (STDC_HEADERS))
+# define bcopy(s, d, n) memcpy ((d), (s), (n))
+#endif
+
+#else /* not HAVE_CONFIG_H */
+
+#if defined(HAVE_STRING_H) || defined(STDC_HEADERS)
+#define bcopy(s, d, n) memcpy ((d), (s), (n))
+#endif
+
+#ifdef STDC_HEADERS
+#include <stdlib.h>
+#include <string.h>
+#else
+char *malloc ();
+char *realloc ();
+#endif
+
+#endif /* not HAVE_CONFIG_H */
+
+#include "ltcap.h"
+
+#ifndef NULL
+#define NULL (char *) 0
+#endif
+
+#ifndef emacs
+static void
+memory_out ()
+{
+ write (2, "virtual memory exhausted\n", 25);
+ exit (1);
+}
+
+static char *
+xmalloc (size)
+ unsigned size;
+{
+ register char *tem = malloc (size);
+
+ if (!tem)
+ memory_out ();
+ return tem;
+}
+
+static char *
+xrealloc (ptr, size)
+ char *ptr;
+ unsigned size;
+{
+ register char *tem = realloc (ptr, size);
+
+ if (!tem)
+ memory_out ();
+ return tem;
+}
+#endif /* not emacs */
+
+/* Assuming STRING is the value of a termcap string entry
+ containing `%' constructs to expand parameters,
+ merge in parameter values and store result in block OUTSTRING points to.
+ LEN is the length of OUTSTRING. If more space is needed,
+ a block is allocated with `malloc'.
+
+ The value returned is the address of the resulting string.
+ This may be OUTSTRING or may be the address of a block got with `malloc'.
+ In the latter case, the caller must free the block.
+
+ The fourth and following args to tparam serve as the parameter values. */
+
+static char *tparam1 ();
+
+/* VARARGS 2 */
+char *
+tparam (string, outstring, len, arg0, arg1, arg2, arg3)
+ char *string;
+ char *outstring;
+ int len;
+ int arg0, arg1, arg2, arg3;
+{
+ int arg[4];
+
+ arg[0] = arg0;
+ arg[1] = arg1;
+ arg[2] = arg2;
+ arg[3] = arg3;
+ return tparam1 (string, outstring, len, NULL, NULL, arg);
+}
+
+__private_extern__ char *BC;
+__private_extern__ char *UP;
+
+static char tgoto_buf[50];
+
+__private_extern__
+char *
+tgoto (cm, hpos, vpos)
+ char *cm;
+ int hpos, vpos;
+{
+ int args[2];
+ if (!cm)
+ return NULL;
+ args[0] = vpos;
+ args[1] = hpos;
+ return tparam1 (cm, tgoto_buf, 50, UP, BC, args);
+}
+
+static char *
+tparam1 (string, outstring, len, up, left, argp)
+ char *string;
+ char *outstring;
+ int len;
+ char *up, *left;
+ register int *argp;
+{
+ register int c;
+ register char *p = string;
+ register char *op = outstring;
+ char *outend;
+ int outlen = 0;
+
+ register int tem;
+ int *old_argp = argp;
+ int doleft = 0;
+ int doup = 0;
+
+ outend = outstring + len;
+
+ while (1)
+ {
+ /* If the buffer might be too short, make it bigger. */
+ if (op + 5 >= outend)
+ {
+ register char *new;
+ if (outlen == 0)
+ {
+ outlen = len + 40;
+ new = (char *) xmalloc (outlen);
+ outend += 40;
+ bcopy (outstring, new, op - outstring);
+ }
+ else
+ {
+ outend += outlen;
+ outlen *= 2;
+ new = (char *) xrealloc (outstring, outlen);
+ }
+ op += new - outstring;
+ outend += new - outstring;
+ outstring = new;
+ }
+ c = *p++;
+ if (!c)
+ break;
+ if (c == '%')
+ {
+ c = *p++;
+ tem = *argp;
+ switch (c)
+ {
+ case 'd': /* %d means output in decimal. */
+ if (tem < 10)
+ goto onedigit;
+ if (tem < 100)
+ goto twodigit;
+ case '3': /* %3 means output in decimal, 3 digits. */
+ if (tem > 999)
+ {
+ *op++ = tem / 1000 + '0';
+ tem %= 1000;
+ }
+ *op++ = tem / 100 + '0';
+ case '2': /* %2 means output in decimal, 2 digits. */
+ twodigit:
+ tem %= 100;
+ *op++ = tem / 10 + '0';
+ onedigit:
+ *op++ = tem % 10 + '0';
+ argp++;
+ break;
+
+ case 'C':
+ /* For c-100: print quotient of value by 96, if nonzero,
+ then do like %+. */
+ if (tem >= 96)
+ {
+ *op++ = tem / 96;
+ tem %= 96;
+ }
+ case '+': /* %+x means add character code of char x. */
+ tem += *p++;
+ case '.': /* %. means output as character. */
+ if (left)
+ {
+ /* If want to forbid output of 0 and \n and \t,
+ and this is one of them, increment it. */
+ while (tem == 0 || tem == '\n' || tem == '\t')
+ {
+ tem++;
+ if (argp == old_argp)
+ doup++, outend -= strlen (up);
+ else
+ doleft++, outend -= strlen (left);
+ }
+ }
+ *op++ = tem ? tem : 0200;
+ case 'f': /* %f means discard next arg. */
+ argp++;
+ break;
+
+ case 'b': /* %b means back up one arg (and re-use it). */
+ argp--;
+ break;
+
+ case 'r': /* %r means interchange following two args. */
+ argp[0] = argp[1];
+ argp[1] = tem;
+ old_argp++;
+ break;
+
+ case '>': /* %>xy means if arg is > char code of x, */
+ if (argp[0] > *p++) /* then add char code of y to the arg, */
+ argp[0] += *p; /* and in any case don't output. */
+ p++; /* Leave the arg to be output later. */
+ break;
+
+ case 'a': /* %a means arithmetic. */
+ /* Next character says what operation.
+ Add or subtract either a constant or some other arg. */
+ /* First following character is + to add or - to subtract
+ or = to assign. */
+ /* Next following char is 'p' and an arg spec
+ (0100 plus position of that arg relative to this one)
+ or 'c' and a constant stored in a character. */
+ tem = p[2] & 0177;
+ if (p[1] == 'p')
+ tem = argp[tem - 0100];
+ if (p[0] == '-')
+ argp[0] -= tem;
+ else if (p[0] == '+')
+ argp[0] += tem;
+ else if (p[0] == '*')
+ argp[0] *= tem;
+ else if (p[0] == '/')
+ argp[0] /= tem;
+ else
+ argp[0] = tem;
+
+ p += 3;
+ break;
+
+ case 'i': /* %i means add one to arg, */
+ argp[0] ++; /* and leave it to be output later. */
+ argp[1] ++; /* Increment the following arg, too! */
+ break;
+
+ case '%': /* %% means output %; no arg. */
+ goto ordinary;
+
+ case 'n': /* %n means xor each of next two args with 140. */
+ argp[0] ^= 0140;
+ argp[1] ^= 0140;
+ break;
+
+ case 'm': /* %m means xor each of next two args with 177. */
+ argp[0] ^= 0177;
+ argp[1] ^= 0177;
+ break;
+
+ case 'B': /* %B means express arg as BCD char code. */
+ argp[0] += 6 * (tem / 10);
+ break;
+
+ case 'D': /* %D means weird Delta Data transformation. */
+ argp[0] -= 2 * (tem % 16);
+ break;
+ }
+ }
+ else
+ /* Ordinary character in the argument string. */
+ ordinary:
+ *op++ = c;
+ }
+ *op = 0;
+ while (doup-- > 0)
+ strcat (op, up);
+ while (doleft-- > 0)
+ strcat (op, left);
+ return outstring;
+}
+
+#ifdef DEBUG
+
+main (argc, argv)
+ int argc;
+ char **argv;
+{
+ char buf[50];
+ int args[3];
+ args[0] = atoi (argv[2]);
+ args[1] = atoi (argv[3]);
+ args[2] = atoi (argv[4]);
+ tparam1 (argv[1], buf, "LEFT", "UP", args);
+ printf ("%s\n", buf);
+ return 0;
+}
+
+#endif /* DEBUG */
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