1 /* Merge parameters into a termcap entry string.
2 Copyright (C) 1985, 87, 93, 95 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; see the file COPYING. If not, write to the
16 Free Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
18 /* Emacs config.h may rename various library functions such as malloc. */
28 #define NULL (char *) 0
35 write (2, "virtual memory exhausted\n", 25);
43 register char *tem = malloc (size);
55 register char *tem = realloc (ptr, size);
61 #endif /* not emacs */
63 /* Assuming STRING is the value of a termcap string entry
64 containing `%' constructs to expand parameters,
65 merge in parameter values and store result in block OUTSTRING points to.
66 LEN is the length of OUTSTRING. If more space is needed,
67 a block is allocated with `malloc'.
69 The value returned is the address of the resulting string.
70 This may be OUTSTRING or may be the address of a block got with `malloc'.
71 In the latter case, the caller must free the block.
73 The fourth and following args to tparam serve as the parameter values. */
75 static char *tparam1 ();
79 tparam (string, outstring, len, arg0, arg1, arg2, arg3)
83 int arg0, arg1, arg2, arg3;
91 return tparam1 (string, outstring, len, NULL, NULL, arg);
94 __private_extern__ char *BC;
95 __private_extern__ char *UP;
97 static char tgoto_buf[50];
101 tgoto (cm, hpos, vpos)
110 return tparam1 (cm, tgoto_buf, 50, UP, BC, args);
114 tparam1 (string, outstring, len, up, left, argp)
122 register char *p = string;
123 register char *op = outstring;
128 int *old_argp = argp;
132 outend = outstring + len;
136 /* If the buffer might be too short, make it bigger. */
137 if (op + 5 >= outend)
143 new = (char *) xmalloc (outlen);
145 memcpy (new, outstring, op - outstring);
151 new = (char *) xrealloc (outstring, outlen);
153 op += new - outstring;
154 outend += new - outstring;
166 case 'd': /* %d means output in decimal. */
171 case '3': /* %3 means output in decimal, 3 digits. */
174 *op++ = tem / 1000 + '0';
177 *op++ = tem / 100 + '0';
178 case '2': /* %2 means output in decimal, 2 digits. */
181 *op++ = tem / 10 + '0';
183 *op++ = tem % 10 + '0';
188 /* For c-100: print quotient of value by 96, if nonzero,
195 case '+': /* %+x means add character code of char x. */
197 case '.': /* %. means output as character. */
200 /* If want to forbid output of 0 and \n and \t,
201 and this is one of them, increment it. */
202 while (tem == 0 || tem == '\n' || tem == '\t')
205 if (argp == old_argp)
206 doup++, outend -= strlen (up);
208 doleft++, outend -= strlen (left);
211 *op++ = tem ? tem : 0200;
212 case 'f': /* %f means discard next arg. */
216 case 'b': /* %b means back up one arg (and re-use it). */
220 case 'r': /* %r means interchange following two args. */
226 case '>': /* %>xy means if arg is > char code of x, */
227 if (argp[0] > *p++) /* then add char code of y to the arg, */
228 argp[0] += *p; /* and in any case don't output. */
229 p++; /* Leave the arg to be output later. */
232 case 'a': /* %a means arithmetic. */
233 /* Next character says what operation.
234 Add or subtract either a constant or some other arg. */
235 /* First following character is + to add or - to subtract
237 /* Next following char is 'p' and an arg spec
238 (0100 plus position of that arg relative to this one)
239 or 'c' and a constant stored in a character. */
242 tem = argp[tem - 0100];
245 else if (p[0] == '+')
247 else if (p[0] == '*')
249 else if (p[0] == '/')
257 case 'i': /* %i means add one to arg, */
258 argp[0] ++; /* and leave it to be output later. */
259 argp[1] ++; /* Increment the following arg, too! */
262 case '%': /* %% means output %; no arg. */
265 case 'n': /* %n means xor each of next two args with 140. */
270 case 'm': /* %m means xor each of next two args with 177. */
275 case 'B': /* %B means express arg as BCD char code. */
276 argp[0] += 6 * (tem / 10);
279 case 'D': /* %D means weird Delta Data transformation. */
280 argp[0] -= 2 * (tem % 16);
285 /* Ordinary character in the argument string. */
305 args[0] = atoi (argv[2]);
306 args[1] = atoi (argv[3]);
307 args[2] = atoi (argv[4]);
308 tparam1 (argv[1], buf, "LEFT", "UP", args);
309 printf ("%s\n", buf);