ncurses/base/MKkeyname.awk

   1 # $Id: MKkeyname.awk,v 1.51 2020/02/02 23:34:34 tom Exp $
   2 ##############################################################################
   3 # Copyright 2020 Thomas E. Dickey                                            #
   4 # Copyright 1998-2016,2017 Free Software Foundation, Inc.                    #
   5 #                                                                            #
   6 # Permission is hereby granted, free of charge, to any person obtaining a    #
   7 # copy of this software and associated documentation files (the "Software"), #
   8 # to deal in the Software without restriction, including without limitation  #
   9 # the rights to use, copy, modify, merge, publish, distribute, distribute    #
  10 # with modifications, sublicense, and/or sell copies of the Software, and to #
  11 # permit persons to whom the Software is furnished to do so, subject to the  #
  12 # following conditions:                                                      #
  13 #                                                                            #
  14 # The above copyright notice and this permission notice shall be included in #
  15 # all copies or substantial portions of the Software.                        #
  16 #                                                                            #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR #
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   #
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    #
  20 # THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      #
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING    #
  22 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER        #
  23 # DEALINGS IN THE SOFTWARE.                                                  #
  24 #                                                                            #
  25 # Except as contained in this notice, the name(s) of the above copyright     #
  26 # holders shall not be used in advertising or otherwise to promote the sale, #
  27 # use or other dealings in this Software without prior written               #
  28 # authorization.                                                             #
  29 ##############################################################################
  30 BEGIN {
  31         print "/* generated by MKkeyname.awk */"
  32         print ""
  33         print "#include <curses.priv.h>"
  34         print "#include <tic.h>"
  35         print ""
  36         first = 1;
  37 }
  38
  39 /^[^#]/ {
  40                 if (bigstrings) {
  41                         if (first)  {
  42                                 print "struct kn { short offset; int code; };"
  43                                 print "static const struct kn _nc_key_names[] = {"
  44                         }
  45                         printf "\t{ %d, %s },\n", offset, $1
  46                         offset += length($1) + 1
  47                         names = names"\n\t\""$1"\\0\""
  48                 } else {
  49                         if (first) {
  50                                 print "struct kn { const char *name; int code; };"
  51                                 print "static const struct kn _nc_key_names[] = {"
  52                         }
  53                         printf "\t{ \"%s\", %s },\n", $1, $1;
  54                 }
  55                 first = 0;
  56         }
  57
  58 END {
  59         if (bigstrings) {
  60                 printf "\t{ -1, 0 }};\n"
  61                 print ""
  62                 print "static const char key_names[] = "names";"
  63         } else {
  64                 printf "\t{ 0, 0 }};\n"
  65         }
  66         print ""
  67         print "#define SIZEOF_TABLE 256"
  68         print "#define MyTable _nc_globals.keyname_table"
  69         print "#define MyInit  _nc_globals.init_keyname"
  70         print ""
  71         print "NCURSES_EXPORT(NCURSES_CONST char *)"
  72         print "safe_keyname (SCREEN *sp, int c)"
  73         print "{"
  74         print " char name[20];"
  75         print " NCURSES_CONST char *result = 0;"
  76         print ""
  77         print " if (c == -1) {"
  78         print "         result = \"-1\";"
  79         print " } else {"
  80         print "         int i;"
  81         if (bigstrings) {
  82                 print "         for (i = 0; _nc_key_names[i].offset != -1; i++) {"
  83                 print "                 if (_nc_key_names[i].code == c) {"
  84                 print "                         result = (NCURSES_CONST char *)key_names + _nc_key_names[i].offset;"
  85                 print "                         break;"
  86                 print "                 }"
  87                 print "         }"
  88         } else {
  89                 print "         for (i = 0; _nc_key_names[i].name != 0; i++) {"
  90                 print "                 if (_nc_key_names[i].code == c) {"
  91                 print "                         result = (NCURSES_CONST char *)_nc_key_names[i].name;"
  92                 print "                         break;"
  93                 print "                 }"
  94                 print "         }"
  95         }
  96         print ""
  97         print "         if (result == 0 && (c >= 0 && c < SIZEOF_TABLE)) {"
  98         print "                 if (MyTable == 0)"
  99         print "                         MyTable = typeCalloc(char *, SIZEOF_TABLE);"
 100         print ""
 101         print "                 if (MyTable != 0) {"
 102         print "                         int m_prefix = (sp == 0 || sp->_use_meta);"
 103         print ""
 104         print "                         /* if sense of meta() changed, discard cached data */"
 105         print "                         if (MyInit != (m_prefix + 1)) {"
 106         print "                                 MyInit = m_prefix + 1;"
 107         print "                                 for (i = 0; i < SIZEOF_TABLE; ++i) {"
 108         print "                                         if (MyTable[i]) {"
 109         print "                                                 FreeAndNull(MyTable[i]);"
 110         print "                                         }"
 111         print "                                 }"
 112         print "                         }"
 113         print ""
 114         print "                         /* create and cache result as needed */"
 115         print "                         if (MyTable[c] == 0) {"
 116         print "                                 int cc = c;"
 117         print "                                 char *p = name;"
 118         print "#define P_LIMIT (sizeof(name) - (size_t) (p - name))"
 119         print "                                 if (cc >= 128 && m_prefix) {"
 120         print "                                         _nc_STRCPY(p, \"M-\", P_LIMIT);"
 121         print "                                         p += 2;"
 122         print "                                         cc -= 128;"
 123         print "                                 }"
 124         print "                                 if (cc < 32)"
 125         print "                                         _nc_SPRINTF(p, _nc_SLIMIT(P_LIMIT) \"^%c\", cc + '@');"
 126         print "                                 else if (cc == 127)"
 127         print "                                         _nc_STRCPY(p, \"^?\", P_LIMIT);"
 128         print "                                 else"
 129         print "                                         _nc_SPRINTF(p, _nc_SLIMIT(P_LIMIT) \"%c\", cc);"
 130         print "                                 MyTable[c] = strdup(name);"
 131         print "                         }"
 132         print "                         result = MyTable[c];"
 133         print "                 }"
 134         print "#if NCURSES_EXT_FUNCS && NCURSES_XNAMES"
 135         print "         } else if (result == 0 && HasTerminal(sp)) {"
 136         print "                 int j, k;"
 137         print "                 char * bound;"
 138         print "                 TERMTYPE2 *tp = &TerminalType(TerminalOf(sp));"
 139         print "                 unsigned save_trace = _nc_tracing;"
 140         print ""
 141         print "                 _nc_tracing = 0;        /* prevent recursion via keybound() */"
 142         print "                 for (j = 0; (bound = NCURSES_SP_NAME(keybound)(NCURSES_SP_ARGx c, j)) != 0; ++j) {"
 143         print "                         for(k = STRCOUNT; k < (int) NUM_STRINGS(tp);  k++) {"
 144         print "                                 if (tp->Strings[k] != 0 && !strcmp(bound, tp->Strings[k])) {"
 145         print "                                         result = ExtStrname(tp, k, strnames);"
 146         print "                                         break;"
 147         print "                                 }"
 148         print "                         }"
 149         print "                         free(bound);"
 150         print "                         if (result != 0)"
 151         print "                                 break;"
 152         print "                 }"
 153         print "                 _nc_tracing = save_trace;"
 154         print "#endif"
 155         print "         }"
 156         print " }"
 157         print " return result;"
 158         print "}"
 159         print ""
 160         print "NCURSES_EXPORT(NCURSES_CONST char *)"
 161         print "keyname (int c)"
 162         print "{"
 163         print " return safe_keyname (CURRENT_SCREEN, c);"
 164         print "}"
 165         print ""
 166         print "#if NO_LEAKS"
 167         print "void _nc_keyname_leaks(void)"
 168         print "{"
 169         print " if (MyTable != 0) {"
 170         print "         int j;"
 171         print "         for (j = 0; j < SIZEOF_TABLE; ++j) {"
 172         print "                 FreeIfNeeded(MyTable[j]);"
 173         print "         }"
 174         print "         FreeAndNull(MyTable);"
 175         print " }"
 176         print "}"
 177         print "#endif /* NO_LEAKS */"
 178 }