ncurses/base/MKkeyname.awk

   1 # $Id: MKkeyname.awk,v 1.50 2017/04/11 01:18:08 tom Exp $
   2 ##############################################################################
   3 # Copyright (c) 1999-2016,2017 Free Software Foundation, Inc.                #
   4 #                                                                            #
   5 # Permission is hereby granted, free of charge, to any person obtaining a    #
   6 # copy of this software and associated documentation files (the "Software"), #
   7 # to deal in the Software without restriction, including without limitation  #
   8 # the rights to use, copy, modify, merge, publish, distribute, distribute    #
   9 # with modifications, sublicense, and/or sell copies of the Software, and to #
  10 # permit persons to whom the Software is furnished to do so, subject to the  #
  11 # following conditions:                                                      #
  12 #                                                                            #
  13 # The above copyright notice and this permission notice shall be included in #
  14 # all copies or substantial portions of the Software.                        #
  15 #                                                                            #
  16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR #
  17 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   #
  18 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    #
  19 # THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      #
  20 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING    #
  21 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER        #
  22 # DEALINGS IN THE SOFTWARE.                                                  #
  23 #                                                                            #
  24 # Except as contained in this notice, the name(s) of the above copyright     #
  25 # holders shall not be used in advertising or otherwise to promote the sale, #
  26 # use or other dealings in this Software without prior written               #
  27 # authorization.                                                             #
  28 ##############################################################################
  29 BEGIN {
  30         print "/* generated by MKkeyname.awk */"
  31         print ""
  32         print "#include <curses.priv.h>"
  33         print "#include <tic.h>"
  34         print ""
  35         first = 1;
  36 }
  37
  38 /^[^#]/ {
  39                 if (bigstrings) {
  40                         if (first)  {
  41                                 print "struct kn { short offset; int code; };"
  42                                 print "static const struct kn _nc_key_names[] = {"
  43                         }
  44                         printf "\t{ %d, %s },\n", offset, $1
  45                         offset += length($1) + 1
  46                         names = names"\n\t\""$1"\\0\""
  47                 } else {
  48                         if (first) {
  49                                 print "struct kn { const char *name; int code; };"
  50                                 print "static const struct kn _nc_key_names[] = {"
  51                         }
  52                         printf "\t{ \"%s\", %s },\n", $1, $1;
  53                 }
  54                 first = 0;
  55         }
  56
  57 END {
  58         if (bigstrings) {
  59                 printf "\t{ -1, 0 }};\n"
  60                 print ""
  61                 print "static const char key_names[] = "names";"
  62         } else {
  63                 printf "\t{ 0, 0 }};\n"
  64         }
  65         print ""
  66         print "#define SIZEOF_TABLE 256"
  67         print "#define MyTable _nc_globals.keyname_table"
  68         print "#define MyInit  _nc_globals.init_keyname"
  69         print ""
  70         print "NCURSES_EXPORT(NCURSES_CONST char *)"
  71         print "safe_keyname (SCREEN *sp, int c)"
  72         print "{"
  73         print " char name[20];"
  74         print " NCURSES_CONST char *result = 0;"
  75         print ""
  76         print " if (c == -1) {"
  77         print "         result = \"-1\";"
  78         print " } else {"
  79         print "         int i;"
  80         if (bigstrings) {
  81                 print "         for (i = 0; _nc_key_names[i].offset != -1; i++) {"
  82                 print "                 if (_nc_key_names[i].code == c) {"
  83                 print "                         result = (NCURSES_CONST char *)key_names + _nc_key_names[i].offset;"
  84                 print "                         break;"
  85                 print "                 }"
  86                 print "         }"
  87         } else {
  88                 print "         for (i = 0; _nc_key_names[i].name != 0; i++) {"
  89                 print "                 if (_nc_key_names[i].code == c) {"
  90                 print "                         result = (NCURSES_CONST char *)_nc_key_names[i].name;"
  91                 print "                         break;"
  92                 print "                 }"
  93                 print "         }"
  94         }
  95         print ""
  96         print "         if (result == 0 && (c >= 0 && c < SIZEOF_TABLE)) {"
  97         print "                 if (MyTable == 0)"
  98         print "                         MyTable = typeCalloc(char *, SIZEOF_TABLE);"
  99         print ""
 100         print "                 if (MyTable != 0) {"
 101         print "                         int m_prefix = (sp == 0 || sp->_use_meta);"
 102         print ""
 103         print "                         /* if sense of meta() changed, discard cached data */"
 104         print "                         if (MyInit != (m_prefix + 1)) {"
 105         print "                                 MyInit = m_prefix + 1;"
 106         print "                                 for (i = 0; i < SIZEOF_TABLE; ++i) {"
 107         print "                                         if (MyTable[i]) {"
 108         print "                                                 FreeAndNull(MyTable[i]);"
 109         print "                                         }"
 110         print "                                 }"
 111         print "                         }"
 112         print ""
 113         print "                         /* create and cache result as needed */"
 114         print "                         if (MyTable[c] == 0) {"
 115         print "                                 int cc = c;"
 116         print "                                 char *p = name;"
 117         print "#define P_LIMIT (sizeof(name) - (size_t) (p - name))"
 118         print "                                 if (cc >= 128 && m_prefix) {"
 119         print "                                         _nc_STRCPY(p, \"M-\", P_LIMIT);"
 120         print "                                         p += 2;"
 121         print "                                         cc -= 128;"
 122         print "                                 }"
 123         print "                                 if (cc < 32)"
 124         print "                                         _nc_SPRINTF(p, _nc_SLIMIT(P_LIMIT) \"^%c\", cc + '@');"
 125         print "                                 else if (cc == 127)"
 126         print "                                         _nc_STRCPY(p, \"^?\", P_LIMIT);"
 127         print "                                 else"
 128         print "                                         _nc_SPRINTF(p, _nc_SLIMIT(P_LIMIT) \"%c\", cc);"
 129         print "                                 MyTable[c] = strdup(name);"
 130         print "                         }"
 131         print "                         result = MyTable[c];"
 132         print "                 }"
 133         print "#if NCURSES_EXT_FUNCS && NCURSES_XNAMES"
 134         print "         } else if (result == 0 && HasTerminal(sp)) {"
 135         print "                 int j, k;"
 136         print "                 char * bound;"
 137         print "                 TERMTYPE2 *tp = &TerminalType(TerminalOf(sp));"
 138         print "                 unsigned save_trace = _nc_tracing;"
 139         print ""
 140         print "                 _nc_tracing = 0;        /* prevent recursion via keybound() */"
 141         print "                 for (j = 0; (bound = NCURSES_SP_NAME(keybound)(NCURSES_SP_ARGx c, j)) != 0; ++j) {"
 142         print "                         for(k = STRCOUNT; k < (int) NUM_STRINGS(tp);  k++) {"
 143         print "                                 if (tp->Strings[k] != 0 && !strcmp(bound, tp->Strings[k])) {"
 144         print "                                         result = ExtStrname(tp, k, strnames);"
 145         print "                                         break;"
 146         print "                                 }"
 147         print "                         }"
 148         print "                         free(bound);"
 149         print "                         if (result != 0)"
 150         print "                                 break;"
 151         print "                 }"
 152         print "                 _nc_tracing = save_trace;"
 153         print "#endif"
 154         print "         }"
 155         print " }"
 156         print " return result;"
 157         print "}"
 158         print ""
 159         print "NCURSES_EXPORT(NCURSES_CONST char *)"
 160         print "keyname (int c)"
 161         print "{"
 162         print " return safe_keyname (CURRENT_SCREEN, c);"
 163         print "}"
 164         print ""
 165         print "#if NO_LEAKS"
 166         print "void _nc_keyname_leaks(void)"
 167         print "{"
 168         print " if (MyTable != 0) {"
 169         print "         int j;"
 170         print "         for (j = 0; j < SIZEOF_TABLE; ++j) {"
 171         print "                 FreeIfNeeded(MyTable[j]);"
 172         print "         }"
 173         print "         FreeAndNull(MyTable);"
 174         print " }"
 175         print "}"
 176         print "#endif /* NO_LEAKS */"
 177 }