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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 #ifdef emacs
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25
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26 #include <config.h>
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27
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28 #include <string.h>
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29
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551
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30 #undef realloc
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31 #undef malloc
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32 #undef free
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0
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33 #define realloc xrealloc
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34 #define malloc xmalloc
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35 #define free xfree
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458
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36 extern void *xmalloc (size_t size);
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37 extern void *xrealloc (void *, size_t size);
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0
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38
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551
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39 #else /* !emacs */
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0
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40
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41 #include <stdlib.h>
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42 #include <string.h>
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43
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44 #endif /* !emacs */
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45
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46 /* Assuming STRING is the value of a termcap string entry
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47 containing `%' constructs to expand parameters,
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48 merge in parameter values and store result in block OUTSTRING points to.
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49 LEN is the length of OUTSTRING. If more space is needed,
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50 a block is allocated with `malloc'.
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51
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52 The value returned is the address of the resulting string.
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53 This may be OUTSTRING or may be the address of a block got with `malloc'.
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54 In the latter case, the caller must free the block.
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55
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56 The fourth and following args to tparam serve as the parameter values. */
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57
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398
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58 static char *tparam1 (const char *string, char *outstring, int len,
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59 const char *up, const char *left,
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0
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60 int *argp);
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61
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62 /* XEmacs: renamed this function because just tparam() conflicts with
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63 ncurses */
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398
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64 char *emacs_tparam (const char *string, char *outstring, int len, int arg0,
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0
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65 int arg1, int arg2, int arg3);
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66 char *
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398
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67 emacs_tparam (const char *string, char *outstring, int len, int arg0,
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0
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68 int arg1, int arg2, int arg3)
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69 {
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70 int arg[4];
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71 arg[0] = arg0;
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72 arg[1] = arg1;
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73 arg[2] = arg2;
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74 arg[3] = arg3;
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75 return tparam1 (string, outstring, len, 0, 0, arg);
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76 }
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77
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398
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78 const char *BC;
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79 const char *UP;
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0
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80
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81 static char tgoto_buf[50];
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82
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398
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83 char *tgoto (const char *cm, int hpos, int vpos);
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0
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84 char *
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398
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85 tgoto (const char *cm, int hpos, int vpos)
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0
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86 {
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87 int args[2];
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88 if (!cm)
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89 return 0;
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90 args[0] = vpos;
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91 args[1] = hpos;
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92 return tparam1 (cm, tgoto_buf, 50, UP, BC, args);
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93 }
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94
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95 static char *
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398
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96 tparam1 (const char *string, char *outstring, int len, const char *up,
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97 const char *left, int *argp)
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0
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98 {
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99 int c;
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398
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100 const char *p = string;
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0
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101 char *op = outstring;
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102 char *outend;
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103 int outlen = 0;
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104
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105 int tem;
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106 int *old_argp = argp;
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107 int doleft = 0;
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108 int doup = 0;
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109
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110 outend = outstring + len;
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111
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112 while (1)
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113 {
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114 /* If the buffer might be too short, make it bigger. */
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115 if (op + 5 >= outend)
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116 {
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117 char *new;
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118 if (outlen == 0)
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119 {
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120 outlen = len + 40;
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121 new = (char *) malloc (outlen);
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122 outend += 40;
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123 memcpy (new, outstring, op - outstring);
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124 }
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125 else
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126 {
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127 outend += outlen;
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128 outlen *= 2;
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129 new = (char *) realloc (outstring, outlen);
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130 }
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131 op += new - outstring;
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132 outend += new - outstring;
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133 outstring = new;
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134 }
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135 c = *p++;
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136 if (!c)
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137 break;
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138 if (c == '%')
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139 {
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140 c = *p++;
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141 tem = *argp;
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142 switch (c)
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143 {
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144 case 'd': /* %d means output in decimal. */
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145 if (tem < 10)
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146 goto onedigit;
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147 if (tem < 100)
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148 goto twodigit;
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149 case '3': /* %3 means output in decimal, 3 digits. */
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150 if (tem > 999)
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151 {
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152 *op++ = tem / 1000 + '0';
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153 tem %= 1000;
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154 }
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155 *op++ = tem / 100 + '0';
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156 case '2': /* %2 means output in decimal, 2 digits. */
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157 twodigit:
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158 tem %= 100;
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159 *op++ = tem / 10 + '0';
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160 onedigit:
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161 *op++ = tem % 10 + '0';
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162 argp++;
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163 break;
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164
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165 case 'C':
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166 /* For c-100: print quotient of value by 96, if nonzero,
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167 then do like %+. */
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168 if (tem >= 96)
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169 {
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170 *op++ = tem / 96;
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171 tem %= 96;
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172 }
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173 case '+': /* %+x means add character code of char x. */
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174 tem += *p++;
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175 case '.': /* %. means output as character. */
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176 if (left)
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177 {
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178 /* If want to forbid output of 0 and \n and \t,
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179 and this is one of them, increment it. */
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180 while (tem == 0 || tem == '\n' || tem == '\t')
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181 {
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182 tem++;
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183 if (argp == old_argp)
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184 doup++, outend -= strlen (up);
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185 else
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186 doleft++, outend -= strlen (left);
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187 }
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188 }
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189 *op++ = tem | 0200;
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190 case 'f': /* %f means discard next arg. */
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191 argp++;
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192 break;
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193
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194 case 'b': /* %b means back up one arg (and re-use it). */
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195 argp--;
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196 break;
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197
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198 case 'r': /* %r means interchange following two args. */
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199 argp[0] = argp[1];
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200 argp[1] = tem;
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201 old_argp++;
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202 break;
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203
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204 case '>': /* %>xy means if arg is > char code of x, */
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205 if (argp[0] > *p++) /* then add char code of y to the arg, */
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206 argp[0] += *p; /* and in any case don't output. */
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207 p++; /* Leave the arg to be output later. */
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208 break;
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209
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210 case 'a': /* %a means arithmetic. */
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211 /* Next character says what operation.
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212 Add or subtract either a constant or some other arg. */
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213 /* First following character is + to add or - to subtract
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214 or = to assign. */
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215 /* Next following char is 'p' and an arg spec
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216 (0100 plus position of that arg relative to this one)
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217 or 'c' and a constant stored in a character. */
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218 tem = p[2] & 0177;
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219 if (p[1] == 'p')
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220 tem = argp[tem - 0100];
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221 if (p[0] == '-')
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222 argp[0] -= tem;
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223 else if (p[0] == '+')
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224 argp[0] += tem;
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225 else if (p[0] == '*')
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226 argp[0] *= tem;
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227 else if (p[0] == '/')
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228 argp[0] /= tem;
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229 else
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230 argp[0] = tem;
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231
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232 p += 3;
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233 break;
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234
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235 case 'i': /* %i means add one to arg, */
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236 argp[0] ++; /* and leave it to be output later. */
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237 argp[1] ++; /* Increment the following arg, too! */
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238 break;
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239
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240 case '%': /* %% means output %; no arg. */
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241 goto ordinary;
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242
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243 case 'n': /* %n means xor each of next two args with 140. */
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244 argp[0] ^= 0140;
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245 argp[1] ^= 0140;
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246 break;
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247
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248 case 'm': /* %m means xor each of next two args with 177. */
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249 argp[0] ^= 0177;
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250 argp[1] ^= 0177;
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251 break;
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252
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253 case 'B': /* %B means express arg as BCD char code. */
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254 argp[0] += 6 * (tem / 10);
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255 break;
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256
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257 case 'D': /* %D means weird Delta Data transformation. */
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258 argp[0] -= 2 * (tem % 16);
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259 break;
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260 }
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261 }
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262 else
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263 /* Ordinary character in the argument string. */
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264 ordinary:
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265 *op++ = c;
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266 }
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267 *op = 0;
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268 while (doup-- > 0)
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269 strcat (op, up);
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270 while (doleft-- > 0)
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271 strcat (op, left);
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272 return outstring;
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273 }
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274
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275 #ifdef DEBUG
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276
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277 main (argc, argv)
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278 int argc;
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279 char **argv;
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280 {
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281 char buf[50];
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282 int args[3];
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283 args[0] = atoi (argv[2]);
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284 args[1] = atoi (argv[3]);
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285 args[2] = atoi (argv[4]);
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286 tparam1 (argv[1], buf, "LEFT", "UP", args);
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287 printf ("%s\n", buf);
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288 return 0;
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289 }
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290
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291 #endif /* DEBUG */
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