mpw-tools/Rename-flags.c

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2018-07-31 00:26:50 +00:00
#ifdef __ORCAC__
#pragma optimize 79
#pragma noroot
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "Rename-flags.h"
void FlagsHelp(void)
{
fputs("Rename [options] oldName newName\n", stdout);
fputs("-y overwrite existing files (avoids dialog)\n", stdout);
fputs("-n don't overwrite existing file (avoids dialog)\n", stdout);
fputs("-c cancel if conflict occurs (avoids dialog)\n", stdout);
fputs("\n", stdout);
exit(0);
}
struct Flags flags;
int FlagsParse(int argc, char **argv)
{
char *cp;
char *optarg;
char c;
int i;
int j;
int eof; // end-of-flags
int mindex; // mutation index.
memset(&flags, 0, sizeof(flags));
for (i = 1, mindex = 1, eof = 0; i < argc; ++i)
{
cp = argv[i];
c = cp[0];
if (c != '-' || eof)
{
if (i != mindex) argv[mindex] = argv[i];
mindex++;
continue;
}
// -- = end of options.
if (cp[1] == '-' && cp[2] == 0)
{
eof = 1;
continue;
}
// now scan all the flags in the string...
optarg = NULL;
for (j = 1; ; ++j)
{
c = cp[j];
if (c == 0) break;
switch (c)
{
case 'h':
FlagsHelp();
exit(0);
case 'y':
case 'Y':
flags._y = 1;
break;
case 'n':
case 'N':
flags._n = 1;
break;
case 'c':
case 'C':
flags._c = 1;
break;
default:
fprintf(stderr, "### Rename - \"-%c\" is not an option.\n", c);
exit(1);
}
if (optarg) break;
}
}
return mindex;
}