Usenet 1994 January/usenetsourcesnewsgroupsinfomagicjanuary1994.iso/sources/misc/volume38/fixdepend/part01/fixdepend.c

C/C++ Source or Header | 1993-07-14 | 5.0 KB | 181 lines

/*
 *  fixdepend - Fixup the dpendency list generated by makedepend to properly
 *              reference library members.
 *
 *  This program and source is copyright 1993 by Chris Olson, All Rights
 *  Reserved.  Permission is granted for personal use, and it may be
 *  distributed by any means as long as no more than a fair duplication
 *  and media costs are charged.  If this program is going to be sold as
 *  part of a larger product, please contact the author at the following
 *  electronic address:
 *
 *    [e-mail]
 *
 *  fixdepend -l library [-f Makefile] [-s "marker-line"] object ...
 *
 *  Chris Olson
 *  v1.0
 *  06/10/93
 */
#include <stdio.h>
#include <string.h>
#include <sys/param.h>

static char *File = "Makefile";
static char *Lib = "";
static char *Start = "# DO NOT DELETE THIS LINE -- make depend depends on it.";

/*
 *  Tear apart the command line and fill in all of the variables.  Used instead
 *  of 'getarg' because I could not guarentee a 'getarg' on all systems this
 *  program might be ported to.
 */
static int parse_args (argc, argv)
   int argc;    /* Number of arguments on the command line. */
   char **argv;    /* The argument list */
{
   int i;    /* Simple loop counter. */

   for (i = 1; i < argc; i++)
      if (argv[i][0] != '-')
         return i;
      else
         switch (argv[i][1]) {
         case 'f':
            if (argv[i][2] == '\0')
               File = argv[++i];
            else
               File = &argv[i][2];
            break;
         case 'l':
            if (argv[i][2] == '\0')
               Lib = argv[++i];
            else
               Lib = &argv[i][2];
            break;
         case 's':
            if (argv[i][2] == '\0')
               Start = argv[++i];
            else
               Start = &argv[i][2];
            break;
         default:
            fprintf(stderr, "Bad option '%s'.\n", argv[i]);
            exit(-1);
         }
   return i;
} /* parse_args */

/*
 *  Rename a file.  Does NOT work across volumes, but does not need to for this
 *  program.
 */
static int mv(init, new)
   char *init;    /* Initial name of the file. */
   char *new;    /* New name for the file.    */
{
   unlink(new);    /* Don't care if this fails... */
   if (link(init, new))
      return -1;
   return unlink(init);
} /* mv */

/*
 *  Main part of the code.
 */
int main (argc, argv)
   int argc;    /* Number of command line arguments. */
   char **argv;    /* Command line arguments.           */
{
   FILE *fp_in;            /* Stream reading from (Makefile.bak).       */
   FILE *fp_out;        /* Stream writing too (new Makefile)         */
   char *colon;            /* Position of the colon in the string.      */
   char line[BUFSIZ];        /* IO buffer.                                */
   char save_file[MAXPATHLEN];    /* Orginal filename.                         */
   int i;            /* Loop counter.                             */
   int start;            /* Where in the argument list the files are. */

   /*
    *  Parse the command line.
    */
   start = parse_args(argc, argv);
   if (!strlen(Lib)) {
      fprintf(stderr, "You must specify a library name!\n");
      exit(-1);
   }

   /*
    *  Make a backup copy of the makefile, and open up the files.
    */
   sprintf(save_file, "%s.bak", File);
   if (mv(File, save_file) == -1) {
      fprintf(stderr, "Unable to make backup file '%s'\n", save_file);
      exit(-1);
   }
   if ((fp_out = fopen(File, "w")) == NULL) {
      fprintf(stderr, "Unable to open new '%s'.\n", File);
      if (mv(save_file, File))
         fprintf(stderr, "Unable to recover '%s', origional in '%s'.\n",
                 File, save_file);
      exit(-1);
   }
   if ((fp_in = fopen(save_file, "r")) == NULL) {
      fprintf(stderr, "Can't open '%s' for reading.\n", File);
      if (mv(save_file, File))
         fprintf(stderr, "Unable to recover '%s', origional in '%s'.\n",
                 File, save_file);
      exit(-1);
   }

   /*
    *  Copy the file unchanged until we find the line of code where
    *  makedepend left the do-not-edit-beyond-this-point comment.
    */
   while (fgets(line, BUFSIZ, fp_in)) {
      fputs(line, fp_out);
      if (!strncmp(Start, line, strlen(Start)))
         break;
   }

   /*
    *  Now adjust the lines for the objects requested.
    */
   while (fgets(line, BUFSIZ, fp_in)) {
      if ((colon = strchr(line, ':')) == NULL) {
     /*
      *  Not a dependency intro, just copy it out.
      */
         fputs(line, fp_out);
         continue;
      }

      /*
       * Terminate the item, and mark the rest of line.
       */
      *(colon++) = '\0';
      for (i = start; i < argc; i++)
         if (!strcmp(line, argv[i])) {
        /*
         *  Adjust the reference to refer to a library.
         */
            *strchr(line, '.') = '\0';
        fputs(Lib, fp_out);
            fprintf(fp_out, "(%s.o):", Lib, line);
        fputs(colon, fp_out);
            break;
         }
      if (i == argc)
     /*
      *  Not one of the ones we where looking for, just output it.
      */
         fprintf(fp_out, "%s:%s", line, colon);
   }

   /*
    *  Close all of the files and exit...
    */
   fclose(fp_in);
   fclose(fp_out);
   exit(0);
} /*  main */