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0
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1 /* Merge parameters into a termcap entry string.
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2 Copyright (C) 1985, 1987, 1992, 1993, 1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not synched with FSF. */
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22
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23 /* config.h may rename various library functions such as malloc. */
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24 #include <config.h>
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647
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25 #include "lisp.h"
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0
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26
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551
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27 #undef realloc
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28 #undef malloc
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0
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29 #define realloc xrealloc
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30 #define malloc xmalloc
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31
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32 /* Assuming STRING is the value of a termcap string entry
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33 containing `%' constructs to expand parameters,
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34 merge in parameter values and store result in block OUTSTRING points to.
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35 LEN is the length of OUTSTRING. If more space is needed,
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36 a block is allocated with `malloc'.
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37
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38 The value returned is the address of the resulting string.
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39 This may be OUTSTRING or may be the address of a block got with `malloc'.
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40 In the latter case, the caller must free the block.
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41
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42 The fourth and following args to tparam serve as the parameter values. */
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43
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398
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44 static char *tparam1 (const char *string, char *outstring, int len,
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45 const char *up, const char *left,
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0
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46 int *argp);
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47
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48 /* XEmacs: renamed this function because just tparam() conflicts with
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49 ncurses */
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398
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50 char *emacs_tparam (const char *string, char *outstring, int len, int arg0,
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0
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51 int arg1, int arg2, int arg3);
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52 char *
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398
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53 emacs_tparam (const char *string, char *outstring, int len, int arg0,
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0
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54 int arg1, int arg2, int arg3)
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55 {
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56 int arg[4];
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57 arg[0] = arg0;
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58 arg[1] = arg1;
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59 arg[2] = arg2;
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60 arg[3] = arg3;
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61 return tparam1 (string, outstring, len, 0, 0, arg);
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62 }
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63
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398
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64 const char *BC;
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65 const char *UP;
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0
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66
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67 static char tgoto_buf[50];
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68
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398
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69 char *tgoto (const char *cm, int hpos, int vpos);
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0
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70 char *
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398
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71 tgoto (const char *cm, int hpos, int vpos)
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0
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72 {
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73 int args[2];
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74 if (!cm)
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75 return 0;
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76 args[0] = vpos;
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77 args[1] = hpos;
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78 return tparam1 (cm, tgoto_buf, 50, UP, BC, args);
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79 }
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80
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81 static char *
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398
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82 tparam1 (const char *string, char *outstring, int len, const char *up,
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83 const char *left, int *argp)
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0
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84 {
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85 int c;
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398
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86 const char *p = string;
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0
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87 char *op = outstring;
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88 char *outend;
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89 int outlen = 0;
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90
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91 int tem;
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92 int *old_argp = argp;
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93 int doleft = 0;
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94 int doup = 0;
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95
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96 outend = outstring + len;
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97
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98 while (1)
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99 {
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100 /* If the buffer might be too short, make it bigger. */
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101 if (op + 5 >= outend)
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102 {
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3025
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103 char *new_;
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0
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104 if (outlen == 0)
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105 {
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106 outlen = len + 40;
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3025
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107 new_ = (char *) malloc (outlen);
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0
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108 outend += 40;
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3025
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109 memcpy (new_, outstring, op - outstring);
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0
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110 }
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111 else
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112 {
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113 outend += outlen;
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114 outlen *= 2;
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3025
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115 new_ = (char *) realloc (outstring, outlen);
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0
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116 }
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3025
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117 op += new_ - outstring;
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118 outend += new_ - outstring;
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119 outstring = new_;
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0
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120 }
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121 c = *p++;
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122 if (!c)
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123 break;
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124 if (c == '%')
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125 {
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126 c = *p++;
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127 tem = *argp;
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128 switch (c)
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129 {
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130 case 'd': /* %d means output in decimal. */
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131 if (tem < 10)
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132 goto onedigit;
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133 if (tem < 100)
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134 goto twodigit;
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135 case '3': /* %3 means output in decimal, 3 digits. */
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136 if (tem > 999)
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137 {
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138 *op++ = tem / 1000 + '0';
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139 tem %= 1000;
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140 }
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141 *op++ = tem / 100 + '0';
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142 case '2': /* %2 means output in decimal, 2 digits. */
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143 twodigit:
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144 tem %= 100;
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145 *op++ = tem / 10 + '0';
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146 onedigit:
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147 *op++ = tem % 10 + '0';
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148 argp++;
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149 break;
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150
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151 case 'C':
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152 /* For c-100: print quotient of value by 96, if nonzero,
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153 then do like %+. */
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154 if (tem >= 96)
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155 {
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156 *op++ = tem / 96;
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157 tem %= 96;
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158 }
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159 case '+': /* %+x means add character code of char x. */
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160 tem += *p++;
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161 case '.': /* %. means output as character. */
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162 if (left)
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163 {
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164 /* If want to forbid output of 0 and \n and \t,
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165 and this is one of them, increment it. */
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166 while (tem == 0 || tem == '\n' || tem == '\t')
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167 {
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168 tem++;
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169 if (argp == old_argp)
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170 doup++, outend -= strlen (up);
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171 else
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172 doleft++, outend -= strlen (left);
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173 }
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174 }
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175 *op++ = tem | 0200;
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176 case 'f': /* %f means discard next arg. */
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177 argp++;
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178 break;
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179
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180 case 'b': /* %b means back up one arg (and re-use it). */
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181 argp--;
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182 break;
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183
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184 case 'r': /* %r means interchange following two args. */
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185 argp[0] = argp[1];
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186 argp[1] = tem;
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187 old_argp++;
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188 break;
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189
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190 case '>': /* %>xy means if arg is > char code of x, */
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191 if (argp[0] > *p++) /* then add char code of y to the arg, */
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192 argp[0] += *p; /* and in any case don't output. */
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193 p++; /* Leave the arg to be output later. */
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194 break;
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195
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196 case 'a': /* %a means arithmetic. */
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197 /* Next character says what operation.
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198 Add or subtract either a constant or some other arg. */
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199 /* First following character is + to add or - to subtract
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200 or = to assign. */
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201 /* Next following char is 'p' and an arg spec
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202 (0100 plus position of that arg relative to this one)
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203 or 'c' and a constant stored in a character. */
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204 tem = p[2] & 0177;
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205 if (p[1] == 'p')
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206 tem = argp[tem - 0100];
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207 if (p[0] == '-')
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208 argp[0] -= tem;
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209 else if (p[0] == '+')
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210 argp[0] += tem;
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211 else if (p[0] == '*')
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212 argp[0] *= tem;
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213 else if (p[0] == '/')
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214 argp[0] /= tem;
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215 else
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216 argp[0] = tem;
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217
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218 p += 3;
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219 break;
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220
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221 case 'i': /* %i means add one to arg, */
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222 argp[0] ++; /* and leave it to be output later. */
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223 argp[1] ++; /* Increment the following arg, too! */
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224 break;
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225
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226 case '%': /* %% means output %; no arg. */
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227 goto ordinary;
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228
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229 case 'n': /* %n means xor each of next two args with 140. */
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230 argp[0] ^= 0140;
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231 argp[1] ^= 0140;
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232 break;
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233
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234 case 'm': /* %m means xor each of next two args with 177. */
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235 argp[0] ^= 0177;
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236 argp[1] ^= 0177;
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237 break;
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238
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239 case 'B': /* %B means express arg as BCD char code. */
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240 argp[0] += 6 * (tem / 10);
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241 break;
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242
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243 case 'D': /* %D means weird Delta Data transformation. */
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244 argp[0] -= 2 * (tem % 16);
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245 break;
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246 }
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247 }
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248 else
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249 /* Ordinary character in the argument string. */
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250 ordinary:
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251 *op++ = c;
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252 }
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253 *op = 0;
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254 while (doup-- > 0)
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255 strcat (op, up);
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256 while (doleft-- > 0)
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257 strcat (op, left);
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258 return outstring;
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259 }
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