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
16 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
18 /* Emacs config.h may rename various library functions such as malloc. */
21 #else /* not HAVE_CONFIG_H */
23 #if defined(HAVE_STRING_H) || defined(STDC_HEADERS)
24 #define bcopy(s, d, n) memcpy ((d), (s), (n))
35 #endif /* not HAVE_CONFIG_H */
38 #define NULL (char *) 0
45 write (2, "virtual memory exhausted\n", 25);
53 register char *tem = malloc (size);
65 register char *tem = realloc (ptr, size);
71 #endif /* not emacs */
73 /* Assuming STRING is the value of a termcap string entry
74 containing `%' constructs to expand parameters,
75 merge in parameter values and store result in block OUTSTRING points to.
76 LEN is the length of OUTSTRING. If more space is needed,
77 a block is allocated with `malloc'.
79 The value returned is the address of the resulting string.
80 This may be OUTSTRING or may be the address of a block got with `malloc'.
81 In the latter case, the caller must free the block.
83 The fourth and following args to tparam serve as the parameter values. */
85 static char *tparam1 ();
89 tparam (string, outstring, len, arg0, arg1, arg2, arg3)
93 int arg0, arg1, arg2, arg3;
101 return tparam1 (string, outstring, len, NULL, NULL, arg);
107 static char tgoto_buf[50];
110 tgoto (cm, hpos, vpos)
119 return tparam1 (cm, tgoto_buf, 50, UP, BC, args);
123 tparam1 (string, outstring, len, up, left, argp)
131 register char *p = string;
132 register char *op = outstring;
137 int *old_argp = argp;
141 outend = outstring + len;
145 /* If the buffer might be too short, make it bigger. */
146 if (op + 5 >= outend)
152 new = (char *) xmalloc (outlen);
154 bcopy (outstring, new, op - outstring);
160 new = (char *) xrealloc (outstring, outlen);
162 op += new - outstring;
163 outend += new - outstring;
175 case 'd': /* %d means output in decimal. */
180 case '3': /* %3 means output in decimal, 3 digits. */
183 *op++ = tem / 1000 + '0';
186 *op++ = tem / 100 + '0';
187 case '2': /* %2 means output in decimal, 2 digits. */
190 *op++ = tem / 10 + '0';
192 *op++ = tem % 10 + '0';
197 /* For c-100: print quotient of value by 96, if nonzero,
204 case '+': /* %+x means add character code of char x. */
206 case '.': /* %. means output as character. */
209 /* If want to forbid output of 0 and \n and \t,
210 and this is one of them, increment it. */
211 while (tem == 0 || tem == '\n' || tem == '\t')
214 if (argp == old_argp)
215 doup++, outend -= strlen (up);
217 doleft++, outend -= strlen (left);
220 *op++ = tem ? tem : 0200;
221 case 'f': /* %f means discard next arg. */
225 case 'b': /* %b means back up one arg (and re-use it). */
229 case 'r': /* %r means interchange following two args. */
235 case '>': /* %>xy means if arg is > char code of x, */
236 if (argp[0] > *p++) /* then add char code of y to the arg, */
237 argp[0] += *p; /* and in any case don't output. */
238 p++; /* Leave the arg to be output later. */
241 case 'a': /* %a means arithmetic. */
242 /* Next character says what operation.
243 Add or subtract either a constant or some other arg. */
244 /* First following character is + to add or - to subtract
246 /* Next following char is 'p' and an arg spec
247 (0100 plus position of that arg relative to this one)
248 or 'c' and a constant stored in a character. */
251 tem = argp[tem - 0100];
254 else if (p[0] == '+')
256 else if (p[0] == '*')
258 else if (p[0] == '/')
266 case 'i': /* %i means add one to arg, */
267 argp[0] ++; /* and leave it to be output later. */
268 argp[1] ++; /* Increment the following arg, too! */
271 case '%': /* %% means output %; no arg. */
274 case 'n': /* %n means xor each of next two args with 140. */
279 case 'm': /* %m means xor each of next two args with 177. */
284 case 'B': /* %B means express arg as BCD char code. */
285 argp[0] += 6 * (tem / 10);
288 case 'D': /* %D means weird Delta Data transformation. */
289 argp[0] -= 2 * (tem % 16);
294 /* Ordinary character in the argument string. */
314 args[0] = atoi (argv[2]);
315 args[1] = atoi (argv[3]);
316 args[2] = atoi (argv[4]);
317 tparam1 (argv[1], buf, "LEFT", "UP", args);
318 printf ("%s\n", buf);