Subversion Repositories SvarDOS

/*

 * copy

 */

/* /A - Used to copy ASCII files. Applies to the filename preceding it and to

 * all following filenames. Files will be copied until an end-of-file mark is

 * encountered in the file being copied. If an end-of-file mark is encountered

 * in the file, the rest of the file is not copied. DOS will append an EOF

 * mark at the end of the copied file.

 *

 * /B - Used to copy binary files. Applies to the filename preceding it and to

 * all following filenames. Copied files will be read by size (according to

 * the number of bytes indicated in the file`s directory listing). An EOF mark

 * is not placed at the end of the copied file.

 *

 * /V - Checks after the copy to assure that a file was copied correctly. If

 * the copy cannot be verified, the program will display an error message.

 * Using this option will result in a slower copying process.

 */

struct copy_setup {

  const char *src[64];

  unsigned short src_count; /* how many sources are declared */

  const char *dst;

  char src_asciimode[64];

  char dst_asciimode;

  char last_asciimode; /* /A or /B impacts the file preceding it and becomes the new default for all files that follow */

  char verifyflag;

  char lastitemwasplus;

  char databuf[BUFFER_SIZE - 512];

};

static int cmd_copy(struct cmd_funcparam *p) {

  struct copy_setup *setup = (void *)(p->BUFFER);

  unsigned short i;

  if (cmd_ishlp(p)) {

    outputnl("Copies one or more files to another location.");

    outputnl("");

    outputnl("COPY [/A|/B] source [/A|/B] [+source [/A|/B] [+...]] [destination [/A|/B]] [/V]");

    outputnl("");

    outputnl("source       Specifies the file or files to be copied");

    outputnl("/A           Indicates an ASCII text file");

    outputnl("/B           Indicates a binary file");

    outputnl("destination  Specifies the directory and/or filename for the new file(s)");

    outputnl("/V           Verifies that new files are written correctly");

    outputnl("");

    outputnl("To append files, specify a single file for destination, but multiple files");

    outputnl("for source (using wildcards or file1+file2+file3 format).");

    return(-1);

  }

  /* parse cmdline and fill the setup struct accordingly */

  memset(setup, 0, sizeof(*setup));

  for (i = 0; i < p->argc; i++) {

    /* switch? */

    if (p->argv[i][0] == '/') {

      if ((imatch(p->argv[i], "/a")) || (imatch(p->argv[i], "/b"))) {

        setup->last_asciimode = 'b';

        if (imatch(p->argv[i], "/a")) setup->last_asciimode = 'a';

        /* */

        if (setup->dst != NULL) {

          setup->dst_asciimode = setup->last_asciimode;

        } else if (setup->src_count != 0) {

          setup->src_asciimode[setup->src_count - 1] = setup->last_asciimode;

        }

      } else if (imatch(p->argv[i], "/v")) {

        setup->verifyflag = 1;

      } else {

        outputnl("Invalid switch");

        return(-1);

      }

      continue;

    }

    /* not a switch - must be either a source, a destination or a + */

    if (p->argv[i][0] == '+') {

      /* a plus cannot appear after destination or before first source */

      if ((setup->dst != NULL) || (setup->src_count == 0)) {

        outputnl("Invalid syntax");

        return(-1);

      }

      setup->lastitemwasplus = 1;

      /* a plus may be immediately followed by a filename - if so, emulate

       * a new argument */

      if (p->argv[i][1] != 0) {

        p->argv[i] += 1;

        i--;

      }

      continue;

    }

    /* src? (first non-switch or something that follows a +) */

    if ((setup->lastitemwasplus) || (setup->src_count == 0)) {

      setup->src[setup->src_count] = p->argv[i];

      setup->src_asciimode[setup->src_count] = setup->last_asciimode;

      setup->src_count++;

      setup->lastitemwasplus = 0;

      continue;

    }

    /* must be a dst then */

    if (setup->dst != NULL) {

      outputnl("Invalid syntax");

      return(-1);

    }

    setup->dst = p->argv[i];

    setup->dst_asciimode = setup->last_asciimode;

  }

  /* DEBUG: output setup content ("if 1" to enable) */

  #if 1

  printf("src: ");

  for (i = 0; i < setup->src_count; i++) {

    if (i != 0) printf(", ");

    printf("%s [%c]", setup->src[i], setup->src_asciimode[i]);

  }

  printf("\r\n");

  printf("dst: %s [%c]\r\n", setup->dst, setup->dst_asciimode);

  printf("verify: %s\r\n", (setup->verifyflag)?"ON":"OFF");

  #endif

  /* TODO perform the operation based on setup directives */

  return(-1);

}