mdw@git.distorted.org.uk Git - ssr/blob - StraySrc/Utilities/c/chdrgen

   1 /*
   2  * chdrgen.c
   3  *
   4  * Generate csapph headers
   5  *
   6  * © 1995-1998 Straylight
   7  */
   8
   9 /*----- Licensing note ----------------------------------------------------*
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2, or (at your option)
  14  * any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program.  If not, write to the Free Software Foundation,
  23  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <errno.h>
  30 #include <ctype.h>
  31 #include <time.h>
  32
  33
  34 #if defined(__riscos)
  35   #include "kernel.h"
  36   #define lasterr (_kernel_last_oserror()->errmess)
  37 #else
  38   #define lasterr (strerror(errno))
  39 #endif
  40
  41 static char buf[256];
  42
  43 static int xtoi(const char *p)
  44 {
  45   int base=10;
  46   int flags=0;
  47   int a=0;
  48   unsigned t;
  49   char ch;
  50   int b10=0;
  51
  52   for (;;)
  53   {
  54     ch=*p++;
  55     switch (ch)
  56     {
  57       case '&':
  58       case '%':
  59         if (flags & 0x3f) goto end;
  60         if (ch=='&') base=16; else base=2;
  61         flags|=(1<<5);
  62         break;
  63
  64       case '_':
  65         if ((flags & 0x30) || !(flags & (1<<2))) goto end;
  66         base=b10;
  67         flags=(flags & ~0xA) | (1<<5);
  68         a=0;
  69         break;
  70
  71       case '-':
  72       case '+':
  73         if (flags & 0x7f) goto end;
  74         flags|=(1<<6);
  75         if (ch=='-') flags|=(1<<7);
  76         break;
  77
  78       default:
  79         t=ch-'A';
  80         if (t>=26) t=ch-'a';
  81         if (t<26) flags|=(1<<0);
  82         else
  83         {
  84           t=ch-'0';
  85           if (t>=10) goto end;
  86         }
  87         if (t<10)
  88         {
  89           b10=(b10*10)+t;
  90           flags|=(1<<2);
  91         }
  92         else
  93           flags|=(1<<4);
  94         if (!(flags&(1<<3)))
  95         {
  96           if (t<base)
  97           {
  98             a=(a*base)+t;
  99             flags|=(1<<1);
 100           }
 101           else
 102             flags|=(1<<3);
 103         }
 104         break;
 105     }
 106   }
 107
 108 end:
 109   if (flags & (1<<7)) a=-a;
 110   return (a);
 111 }
 112
 113 static void dogen(FILE *in,FILE *out,char *inn,char *outn)
 114 {
 115   char *p,*q,*r,*s;
 116   int ch;
 117   time_t t;
 118   unsigned int var = 0;
 119   int macro=0;
 120   int type=0;
 121   int i;
 122   char *footer="";
 123   int flags=2;
 124
 125   time(&t);
 126   strftime(buf,256,"%d %B %Y",localtime(&t));
 127
 128   p=outn; q=p;
 129   while (*p)
 130   {
 131     if (*p=='.') q=p+1;
 132     p++;
 133   }
 134
 135   p=inn; r=p;
 136   while (*p)
 137   {
 138     if (*p=='.') r=p+1;
 139     p++;
 140   }
 141
 142   fprintf(out,
 143           "/*\n"
 144           " * %s.h\n"
 145           " *\n"
 146           " * [Generated from %s, %s]\n"
 147           " */\n"
 148           "\n"
 149           "#if !defined(__CC_NORCROFT) || !defined(__arm)\n"
 150           "#  error You must use the Norcroft ARM Compiler for Sapphire "
 151                                         "programs\n"
 152           "endif\n"
 153           "\n"
 154           "#pragma include_only_once\n"
 155           "#pragma force_top_level\n"
 156           "\n"
 157           "#ifndef __%s_h\n"
 158           "#define __%s_h\n"
 159           "\n"
 160           "#ifndef __sapphire_h\n"
 161           "#  include \"sapphire.h\"\n"
 162           "#endif\n"
 163           "\n",
 164           q,r,buf,q,q);
 165
 166   do
 167   {
 168     p=buf;
 169     while (ch=getc(in),ch!=EOF && ch!='\n')
 170       *p++=ch;
 171     *p++=0;
 172     p=buf;
 173     while (!isspace(*p) && *p)
 174       p++;
 175     s=p;
 176     while (isspace(*p) && *p)
 177       p++;
 178     q=p;
 179     while (!isspace(*q) && *q)
 180       q++;
 181     r=q;
 182     while (isspace(*r) && *r)
 183       r++;
 184     if (*buf!=';') *q=*s=0;
 185
 186     if (!strcmp(p,"MACRO"))
 187       macro=1;
 188     else if (!strcmp(p,"MEND"))
 189       macro=0;
 190     else if (macro)
 191       /* ... */;
 192     else if (*buf==';')
 193     {
 194       if (flags & 2)
 195         continue;
 196       else if (type!=4)
 197         { fputs(footer,out); type=4; footer=" */\n\n"; flags=0; }
 198       else
 199         flags=1;
 200       switch (buf[1])
 201       {
 202         case '-':
 203           fputs("/*",out);
 204           i=3;
 205           p=buf+1;
 206           while (*p=='-') { putc(*p++,out); i++; }
 207           while (*p!='-') { putc(*p++,out); i++; }
 208           while (i<76) { putc('-',out); i++; }
 209           ch=getc(in);
 210           fputs(ch==';' ? "*\n" : "*/\n",out);
 211           ungetc(ch,in);
 212           if (ch!=';') footer="\n";
 213           break;
 214         case '+':
 215           /* A BAS directive.  Yawn. */
 216           type=0; footer="";
 217           break;
 218         case ' ':
 219           if (buf[2]=='-')
 220           {
 221             fputs(flags & 1 ? " *" : "/*",out);
 222             fputs(buf+1,out);
 223             ch=getc(in);
 224             fputs(ch==';' ? " *\n" : " */\n",out);
 225             ungetc(ch,in);
 226             if (ch!=';') footer="\n";
 227             break;
 228           }
 229         default:
 230           fputs(flags & 1 ? " *" : "/*",out);
 231           fputs(buf+1,out);
 232           putc('\n',out);
 233           break;
 234       }
 235     }
 236     else if (r==buf)
 237     {
 238       if (type!=0) { fputs(footer,out); type=0; footer=""; }
 239       flags=0;
 240     }
 241     else if (!strcmp(p,"IMPORT"))
 242     {
 243       if (type!=1) { fputs(footer,out); type=1; footer="\n"; }
 244       fprintf(out,"extern routine %s;\n",r);
 245     }
 246     else if (!strcmp(p,"EQU"))
 247     {
 248       if (type!=2) { fputs(footer,out); type=2; footer="\n"; }
 249       fprintf(out,"#define %s (",buf);
 250       i=0;
 251       while (*r)
 252       {
 253         switch (*r)
 254         {
 255           case '&': while (i--) putc(' ',out); fputs("0x",out); i=0; break;
 256           case ' ': case 9: i++; break;
 257           case ';': goto end;
 258           default:  while (i--) putc(' ',out); putc(*r,out); i=0; break;
 259         }
 260         r++;
 261       }
 262     end:
 263       fputs(")\n",out);
 264     }
 265     else if (!strcmp(p,"^"))
 266     {
 267       var=xtoi(r);
 268       type=0;
 269     }
 270     else if (!strcmp(p,"#"))
 271     {
 272       if (type!=3) { fputs(footer,out); type=3; footer="\n"; }
 273       if (*buf) fprintf(out,"#define %s %i\n",buf,var);
 274       var+=xtoi(r);
 275     }
 276   }
 277   while (!feof(in));
 278
 279   if (type!=0) putc('\n',out);
 280   fputs("#endif\n",out);
 281 }
 282
 283 int main(int argc,char *argv[])
 284 {
 285   FILE *in,*out;
 286   if (argc!=3)
 287   {
 288     fprintf(stderr,"Usage: chdrgen <asm-header> <c-header>\n");
 289     exit (1);
 290   }
 291   if (in=fopen(argv[1],"r"),!in) goto tidy_0;
 292   if (out=fopen(argv[2],"w"),!out) goto tidy_1;
 293   dogen(in,out,argv[1],argv[2]);
 294   fclose(out);
 295   fclose(in);
 296   return (0);
 297
 298 tidy_1:
 299   fclose(in);
 300 tidy_0:
 301   fprintf(stderr,"%s\n",lasterr);
 302   exit(1);
 303 }