tools/genmf/genmf.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #define PROTOTYPES
   7 #define HAVE_STDARG_H
   8
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <stdlib.h>
  12 #include <assert.h>
  13 #include <ctype.h>
  14 #include <errno.h>
  15
  16 #if defined(HAVE_STDARG_H) && defined(__STDC__) && __STDC__
  17 #   include <stdarg.h>
  18 #   define VA_START(args, lastarg) va_start(args, lastarg)
  19 #else
  20 #   include <varargs.h>
  21 #   define VA_START(args, lastarg) va_start(args)
  22 #endif
  23
  24 #ifdef PROTOTYPES
  25 #   define PARAMS(x) x
  26 #else
  27 #   define PARAMS(x) ()
  28 #endif /* PROTOTYPES */
  29
  30
  31 /* Types */
  32 typedef struct _Node Node;
  33
  34 struct _Node
  35 {
  36     Node * next,
  37          * prev;
  38     char * name;
  39 };
  40
  41 typedef struct
  42 {
  43     Node * first,
  44          * last,
  45          * prelast;
  46 }
  47 List;
  48
  49 typedef struct
  50 {
  51     int    len;
  52     int    max;
  53     char * value;
  54 }
  55 String;
  56
  57 typedef struct
  58 {
  59     Node     node;
  60     int      argcount;
  61     List     args;
  62     String * body;
  63 }
  64 Template;
  65
  66 typedef struct
  67 {
  68     Node   node;
  69     char * defval;
  70     /* char * value; */
  71     int    flags;
  72     int    pos;
  73 #define ARGF_MULTI  1
  74 #define ARGF_ALWAYS 2
  75 #define ARGF_GOTIT  4
  76 }
  77 Arg;
  78
  79 /* Globals */
  80 List templates;
  81 char * curdir = NULL;
  82
  83 /* Macros */
  84 #   define NewList(l)       (((List *)l)->prelast = (Node *)(l), \
  85                             ((List *)l)->last = 0, \
  86                             ((List *)l)->first = (Node *)&(((List *)l)->last))
  87
  88 #   define AddHead(l,n)     ((void)(\
  89         ((Node *)n)->next        = ((List *)l)->first, \
  90         ((Node *)n)->prev        = (Node *)&((List *)l)->first, \
  91         ((List *)l)->first->prev = ((Node *)n), \
  92         ((List *)l)->first       = ((Node *)n)))
  93
  94 #   define AddTail(l,n)     ((void)(\
  95         ((Node *)n)->next          = (Node *)&((List *)l)->last, \
  96         ((Node *)n)->prev          = ((List *)l)->prelast, \
  97         ((List *)l)->prelast->next = ((Node *)n), \
  98         ((List *)l)->prelast       = ((Node *)n) ))
  99
 100 #   define Remove(n)        ((void)(\
 101         ((Node *)n)->prev->next = ((Node *)n)->next,\
 102         ((Node *)n)->next->prev = ((Node *)n)->prev ))
 103
 104 #   define GetHead(l)       (void *)(((List *)l)->first->next \
 105                                 ? ((List *)l)->first \
 106                                 : (Node *)0)
 107 #   define GetTail(l)       (void *)(((List *)l)->prelast->prev \
 108                                 ? ((List *)l)->prelast \
 109                                 : (Node *)0)
 110 #   define GetNext(n)       (void *)(((Node *)n)->next->next \
 111                                 ? ((Node *)n)->next \
 112                                 : (Node *)0)
 113 #   define GetPrev(n)       (void *)(((Node *)n)->prev->prev \
 114                                 ? ((Node *)n)->prev \
 115                                 : (Node *)0)
 116 #   define ForeachNode(l,n) \
 117         for (n=(void *)(((List *)(l))->first); \
 118             ((Node *)(n))->next; \
 119             n=(void *)(((Node *)(n))->next))
 120 #   define ForeachNodeSafe(l,node,nextnode) \
 121         for (node=(void *)(((List *)(l))->first); \
 122             ((nextnode)=(void*)((Node *)(node))->next); \
 123             (node)=(void *)(nextnode))
 124
 125 #define cfree(x)        if (x) free (x)
 126 #define SETSTR(str,val) \
 127     cfree (str); \
 128     str = val ? xstrdup (val) : NULL
 129
 130 #define xstrdup(str)        _xstrdup(str,__FILE__,__LINE__)
 131 #define xmalloc(size)       _xmalloc(size,__FILE__,__LINE__)
 132 #define xfree(ptr)          _xfree(ptr,__FILE__,__LINE__)
 133
 134 #define new(type)           xmalloc(sizeof(type))
 135
 136 /* Prototypes */
 137 extern void cleanup PARAMS ((int exitcode));
 138 extern void error PARAMS ((const char * fmt, ...));
 139
 140 /* Functions */
 141 char *
 142 _xstrdup (const char * str, const char * file, int line)
 143 {
 144     char * nstr;
 145
 146     if (!str)
 147     {
 148         fprintf (stderr, "NULL string passed to strdup from %s:%d\n", file, line);
 149         cleanup (20);
 150     }
 151
 152     nstr = strdup (str);
 153
 154     if (!nstr)
 155     {
 156         fprintf (stderr, "Out of memory in %s:%d\n", file, line);
 157         cleanup (20);
 158     }
 159
 160     return nstr;
 161 }
 162
 163 void *
 164 _xmalloc (size_t size, const char * file, int line)
 165 {
 166     void * ptr;
 167
 168     ptr = malloc (size);
 169
 170     if (size && !ptr)
 171     {
 172         fprintf (stderr, "Out of memory in %s:%d", file, line);
 173         cleanup (20);
 174     }
 175
 176     return ptr;
 177 }
 178
 179 void
 180 _xfree (void * ptr, const char * file, int line)
 181 {
 182     if (ptr)
 183     {
 184 #if 0
 185         ((int *)ptr)[0] = 0xDEADBEEF;
 186 #endif
 187         free (ptr);
 188     }
 189     else
 190         fprintf (stderr, "Illegal free(NULL) in %s:%d", file, line);
 191 }
 192
 193 Node * FindNode (const List * l, const char * name)
 194 {
 195     Node * n;
 196
 197     ForeachNode (l, n)
 198     {
 199         if (!strcmp (n->name, name))
 200             return n;
 201     }
 202
 203     return NULL;
 204 }
 205
 206 void error (const char * fmt, ...)
 207 {
 208     va_list args;
 209     VA_START (args, fmt);
 210     fprintf (stderr, "Error: ");
 211     vfprintf (stderr, fmt, args);
 212     fprintf (stderr, ": %s\n", strerror (errno));
 213     va_end (args);
 214     exit (1);
 215 }
 216
 217 void cleanup (int exitcode)
 218 {
 219 #if 0
 220     if (startdir)
 221     {
 222         chdir (startdir);
 223         free (startdir);
 224     }
 225 #endif
 226
 227     exit (exitcode);
 228 }
 229
 230 String * new_string (const char * init)
 231 {
 232     String * s = new (String);
 233
 234     if (init && *init)
 235     {
 236         s->len = strlen (init);
 237         s->max = (s->len+31)&-32;
 238         s->value = xmalloc (s->max+1);
 239         strcpy (s->value, init);
 240     }
 241     else
 242     {
 243         s->len = 0;
 244         s->max = 32;
 245         s->value = xmalloc (s->max+1);
 246         s->value[0] = 0;
 247     }
 248
 249     return s;
 250 }
 251
 252 void free_string (String * s)
 253 {
 254     cfree (s->value);
 255     xfree (s);
 256 }
 257
 258 void append_string (String * s, const char * app)
 259 {
 260     int len;
 261
 262     if (!app || !*app)
 263         return;
 264
 265     len = strlen (app);
 266
 267     if (len < s->max - s->len - 1)
 268     {
 269         strcpy (s->value+s->len, app);
 270         s->len += len;
 271     }
 272     else
 273     {
 274         char * ns;
 275
 276         s->max = (s->len+len+31) & -32;
 277
 278         ns = xmalloc (s->max+1);
 279
 280         strcpy (ns, s->value);
 281         strcpy (ns+s->len, app);
 282
 283         s->len += len;
 284
 285         xfree (s->value);
 286         s->value = ns;
 287     }
 288 }
 289
 290 String * getline (FILE * fh)
 291 {
 292     String * s = NULL;
 293     char line[256], * ptr;
 294     int len;
 295
 296     for (;;)
 297     {
 298         ptr = fgets (line, sizeof (line), fh);
 299
 300         if (!ptr)
 301             break;
 302
 303         len = strlen (line);
 304
 305         if (line[len - 1] == '\n')
 306         {
 307             line[len - 1] = 0;
 308
 309             if (s)
 310                 append_string (s, line);
 311             else
 312                 s = new_string (line);
 313
 314             break;
 315         }
 316
 317         if (s)
 318             append_string (s, line);
 319         else
 320             s = new_string (line);
 321     }
 322
 323     return s;
 324 }
 325
 326 void add_continuation(String *s, FILE *fh)
 327 {
 328     String *s2;
 329
 330     while (s->value[s->len-1]=='\\')
 331     {
 332         s2 = getline(fh);
 333         s->value[s->len-1]='\0';
 334         s->len--;
 335         append_string(s, s2->value);
 336         free_string(s2);
 337     }
 338 }
 339
 340
 341 void output (const char * line, FILE * outfile)
 342 {
 343     const char * ptr = line;
 344
 345     while (*ptr)
 346     {
 347         if (*ptr == '$' && ptr[1] == '(' && curdir &&
 348             !strncmp ("CURDIR)", ptr+2, 7)
 349         )
 350         {
 351             ptr += 9;
 352             fputs (curdir, outfile);
 353         }
 354         else
 355         {
 356             fputc (*ptr, outfile);
 357             ptr ++;
 358         }
 359     }
 360 }
 361
 362 char ** getargs (const char * line, int * argc)
 363 {
 364     static char * argv[64];
 365     static char * buffer = NULL;
 366     char * src;
 367     int arg;
 368
 369     cfree (buffer);
 370
 371     assert (line);
 372
 373     buffer = xstrdup (line);
 374
 375     assert (buffer);
 376
 377     src = buffer;
 378     arg = 0;
 379
 380     while (*src)
 381     {
 382         while (isspace (*src))
 383             src ++;
 384
 385         if (!*src)
 386             break;
 387
 388         assert (arg < 63);
 389         argv[arg++] = src;
 390
 391         while (*src && !isspace (*src))
 392         {
 393             if (*src == '"')
 394             {
 395                 src ++;
 396
 397                 while (*src && *src != '"')
 398                     src ++;
 399
 400                 src ++;
 401             }
 402             else
 403                 src ++;
 404         }
 405
 406         if (*src)
 407             *src++ = 0;
 408     }
 409
 410     argv[arg] = NULL;
 411
 412     if (argc)
 413         *argc = arg;
 414
 415     return argv;
 416 }
 417
 418 void print_template (Template * tmpl)
 419 {
 420     Arg * arg;
 421
 422     printf ("Template %s:\n", tmpl->node.name);
 423     ForeachNode (&tmpl->args, arg)
 424     {
 425         printf ("   %s (%s) %d\n", arg->node.name,
 426             arg->defval ? arg->defval : "--none--",
 427             arg->flags
 428         );
 429     }
 430     printf ("   body=%s---\n", tmpl->body->value);
 431 }
 432
 433 void read_templates (const char * fn)
 434 {
 435     FILE * fh;
 436     String * line;
 437     Template * tmpl = NULL;
 438     char * ptr;
 439     char ** argv;
 440     int argc;
 441
 442     if (!(fh = fopen (fn, "r")) )
 443     {
 444         error ("Can't open %s for reading", fn);
 445         cleanup (10);
 446     }
 447
 448     while ((line = getline (fh)))
 449     {
 450         ptr = line->value;
 451         while (isspace (*ptr)) ptr++;
 452
 453         if (!strncmp (ptr, "%define", 7))
 454         {
 455             int t;
 456             char * defval, * flags;
 457             Arg * arg;
 458
 459             add_continuation(line, fh);
 460
 461             tmpl = new (Template);
 462
 463             NewList (&tmpl->args);
 464             tmpl->body = NULL;
 465
 466             argv = getargs (line->value, &argc);
 467
 468             tmpl->node.name = xstrdup (argv[1]);
 469             tmpl->argcount = argc-2;
 470
 471             for (t=2; t<argc; t++)
 472             {
 473                 defval = argv[t];
 474
 475                 while (*defval && *defval != '=') defval ++;
 476
 477                 if (*defval)
 478                     *defval ++ = 0;
 479
 480                 flags = defval;
 481
 482                 if (*flags)
 483                 {
 484                     flags += strlen (flags);
 485
 486                     while (flags-2 >= defval && flags[-2] == '/' && isalpha (flags[-1]))
 487                         flags -= 2;
 488
 489                     if (*flags)
 490                         *flags++ = 0;
 491                 }
 492
 493 #if 0
 494     printf ("arg=\"%s\" defval=\"%s\" flags=\"%s\"\n",
 495         argv[t], defval, flags);
 496 #endif
 497
 498                 arg = new (Arg);
 499
 500                 arg->node.name = xstrdup (argv[t]);
 501                 arg->pos = t-2;
 502
 503                 if (*defval)
 504                 {
 505                     if (*defval == '"')
 506                     {
 507                         defval ++;
 508                         defval[strlen (defval) -1] = 0;
 509                     }
 510
 511                     arg->defval = xstrdup (defval);
 512                 }
 513                 else
 514                     arg->defval = NULL;
 515
 516                 arg->flags = 0;
 517
 518                 while (*flags)
 519                 {
 520                     if (*flags == 'M')
 521                         arg->flags |= ARGF_MULTI;
 522                     else if(*flags == 'A')
 523                         arg->flags |= ARGF_ALWAYS;
 524                     else
 525                         error ("Unknown flag %s in argument %s of template %s",
 526                             flags, arg->node.name, tmpl->node.name);
 527
 528                     flags ++;
 529                     if (*flags)
 530                         flags ++;
 531                 }
 532
 533                 AddTail (&tmpl->args, arg);
 534             }
 535
 536             free_string (line);
 537
 538             while ((line = getline (fh)))
 539             {
 540                 if (!strcmp (line->value, "%end"))
 541                     break;
 542
 543                 ptr = line->value;
 544                 while (isspace(*ptr)) ptr++;
 545                 if (*ptr=='%' && ptr[1]!='(' && ptr[1]!='\0')
 546                     add_continuation(line, fh);
 547
 548                 if (tmpl->body)
 549                     append_string (tmpl->body, line->value);
 550                 else
 551                     tmpl->body = new_string (line->value);
 552
 553                 append_string (tmpl->body, "\n");
 554             }
 555
 556 #if 0
 557             print_template (tmpl);
 558 #endif
 559             AddTail (&templates, tmpl);
 560         }
 561
 562         free_string (line);
 563     }
 564
 565     fclose (fh);
 566 }
 567
 568 Arg * findArg (Template * tmpl, char ** argstr)
 569 {
 570     char argname[64];
 571     char * ptr = *argstr;
 572     int len;
 573     Arg * arg;
 574
 575     ptr += 2;
 576     len = 0;
 577
 578     while (*ptr && *ptr != ')')
 579         argname[len++] = *ptr++;
 580
 581     argname[len] = 0;
 582     if (*ptr) ptr++;
 583
 584     arg = (Arg *)FindNode (&tmpl->args, argname);
 585
 586     if (!arg)
 587         error ("Unknown argument %s for template %s",
 588             argname, tmpl->node.name);
 589
 590     *argstr = ptr;
 591
 592     return arg;
 593 }
 594
 595 void replace_template (const char * string, FILE * outfile)
 596 {
 597     char ** argv;
 598     int argc, t;
 599     Template * tmpl;
 600     Arg * arg;
 601     char * argnptr, * value, * ptr;
 602     char ** values, * freeflags;
 603
 604     argv = getargs (string, &argc);
 605
 606     tmpl = (Template *) FindNode (&templates, argv[0]+1);
 607
 608     if (!tmpl)
 609     {
 610         /* Print no error for GNU Make patterns */
 611         /* error ("Can't find template %s\n", argv[0]); */
 612         fputs (string, outfile);
 613     }
 614     else
 615     {
 616         values = xmalloc (sizeof (values[0]) * tmpl->argcount);
 617         freeflags = xmalloc (sizeof (freeflags[0]) * tmpl->argcount);
 618
 619         t = 0;
 620         ForeachNode (&tmpl->args, arg)
 621         {
 622             freeflags[t] = 0;
 623             values[t] = arg->defval ? arg->defval : "";
 624             t ++;
 625         }
 626         assert (t == tmpl->argcount);
 627
 628         arg = GetHead (&tmpl->args);
 629
 630         for (t=1; t<argc; t++)
 631         {
 632             value = argv[t];
 633             while (*value && *value != '=') value++;
 634
 635             if (*value)
 636             {
 637                 argnptr = argv[t];
 638                 *value ++ = 0;
 639             }
 640             else
 641             {
 642                 argnptr = "";
 643                 value = argv[t];
 644             }
 645
 646             if (*value == '"')
 647             {
 648                 value ++;
 649                 value[strlen (value) - 1] = 0;
 650             }
 651
 652             if (*argnptr)
 653             {
 654                 arg = (Arg *) FindNode (&tmpl->args, argnptr);
 655                 if (!arg)
 656                     error ("Unknown argument %s to template %s", argnptr, tmpl->node.name);
 657             }
 658
 659             if (arg->flags & ARGF_MULTI)
 660             {
 661                 String * vals = new_string (value);
 662
 663                 for (t++; t<argc; t++)
 664                 {
 665                     append_string (vals, " ");
 666                     append_string (vals, argv[t]);
 667                 }
 668
 669                 values[arg->pos] = vals->value;
 670                 freeflags[arg->pos] = 1;
 671                 vals->value = NULL;
 672                 free_string (vals);
 673                 arg->flags |= ARGF_GOTIT;
 674             }
 675             else
 676             {
 677                 arg->flags |= ARGF_GOTIT;
 678                 values[arg->pos] = xstrdup (value);
 679                 freeflags[arg->pos] = 1;
 680                 arg = GetNext (arg);
 681             }
 682         }
 683
 684         ForeachNode (&tmpl->args, arg)
 685         {
 686             if(     arg->flags & ARGF_ALWAYS
 687                 &&  (arg->flags & ARGF_GOTIT) == 0 )
 688             {
 689                 error("No value supplied for argument %s for template %s",
 690                     arg->node.name, tmpl->node.name
 691                 );
 692             }
 693         }
 694
 695         for (ptr=tmpl->body->value; *ptr; )
 696         {
 697             if (*ptr == '%' && ptr[1] == '(' /*)*/)
 698             {
 699                 arg = findArg (tmpl, &ptr);
 700                 if (arg)
 701                     output (values[arg->pos], outfile);
 702             }
 703             else if (*ptr == '%')
 704             {
 705                 /* nested template */
 706                 String * str = new_string ("");
 707                 char app[2];
 708                 app[1] = 0;
 709
 710                 while (*ptr)
 711                 {
 712                     if (*ptr == '%' && ptr[1] == '(' /*)*/)
 713                     {
 714                         arg = findArg (tmpl, &ptr);
 715                         if (arg)
 716                             append_string (str, values[arg->pos]);
 717                     }
 718                     else
 719                     {
 720                         app[0] = *ptr++;
 721                         append_string (str, app);
 722                     }
 723
 724                     if (*ptr == '\n')
 725                         break;
 726                 }
 727
 728                 replace_template (str->value, outfile);
 729                 free_string (str);
 730             }
 731             else if (*ptr == '$' && ptr[1] == '(' && curdir &&
 732                     !strncmp ("CURDIR)", ptr+2, 7)
 733                 )
 734             {
 735                 ptr += 9;
 736                 fputs (curdir, outfile);
 737             }
 738             else
 739             {
 740                 fputc (*ptr, outfile);
 741                 ptr ++;
 742             }
 743         }
 744
 745         for (t=0; t<tmpl->argcount; t++)
 746         {
 747             if (freeflags[t])
 748                 xfree (values[t]);
 749         }
 750
 751         xfree (values);
 752         xfree (freeflags);
 753     }
 754 }
 755
 756 void process_file(FILE * infile, FILE *outfile)
 757 {
 758     char * ptr;
 759     String * line;
 760     int common = 0;
 761
 762     fputs (
 763         "####################################################################\n"
 764         "####################################################################\n"
 765         "############# THIS IS A GENERATED FILE ! DO NOT EDIT ###############\n"
 766         "####################################################################\n"
 767         "####################################################################\n"
 768         , outfile
 769     );
 770
 771     while ((line = getline (infile)))
 772     {
 773         ptr = line->value;
 774         while (isspace (*ptr)) ptr++;
 775
 776         if (*ptr == '%')
 777         {
 778             int pos = ptr - line->value;
 779
 780             if (!strncmp (ptr+1, "common", 6))
 781                 common = 1;
 782
 783             add_continuation (line, infile);
 784             ptr = line->value + pos;
 785
 786             replace_template (ptr, outfile);
 787         }
 788         else
 789         {
 790             output (line->value, outfile);
 791             fputc ('\n', outfile);
 792         }
 793
 794         free_string (line);
 795     }
 796
 797     if (!common)
 798     {
 799         replace_template ("%common", outfile);
 800     }
 801
 802 }
 803
 804 int main (int argc, char ** argv)
 805 {
 806     int t;
 807     FILE * infile = NULL, * outfile = NULL;
 808     FILE * listfile = NULL;
 809     char * infilename, *outfilename;
 810     String * line;
 811
 812     NewList (&templates);
 813
 814     for (t=1; t<argc; t++)
 815     {
 816         if (!strncmp ("--curdir=", argv[t], 9))
 817             curdir = argv[t] + 9;
 818         else if(!strncmp ("--listfile", argv[t], 10))
 819         {
 820             // next parameter is the list file name
 821             if (t+1 <= argc)
 822             {
 823                 if (!(listfile = fopen (argv[t+1], "r" )))
 824                 {
 825                     error ( "Can't open list file %s\n", argv[t+1] );
 826                     t++;
 827                 }
 828             }
 829             else
 830                 error ( "No list file name given\n" );
 831         }
 832         else
 833                 read_templates (argv[t]);
 834     }
 835     if (listfile)
 836     {
 837         for (t = 0; (line = getline (listfile)); t++)
 838         {
 839             infilename = strtok (line->value, " \t");
 840             if (!infilename)
 841                 error("Syntax error in list file at line %d\n", t);
 842             outfilename = strtok (NULL, " \t");
 843             if (!outfilename)
 844                 error("Syntax error in list file at line %d\n", t);
 845             if (!(infile = fopen (infilename, "r")))
 846                 error("Can't open input file %s\n", infilename);
 847             if (!(outfile = fopen (outfilename, "w")))
 848                 error("Can't open output file %s\n", outfilename);
 849             process_file (infile, outfile);
 850             fclose (infile);
 851             fclose (outfile);
 852             free_string (line);
 853         }
 854         fclose (listfile);
 855     }
 856     else process_file (stdin, stdout);
 857
 858     return 0;
 859 }