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#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include <sys/stat.h>
#include <sys/types.h>
int mv_main(int argc, char *argv[])
{
const char* dest;
struct stat st;
int i;
if (argc < 3) {
fprintf(stderr,"USAGE: %s <source...> <destination>\n", argv[0]);
return -1;
}
/* check if destination exists */
dest = argv[argc - 1];
if (stat(dest, &st)) {
/* an error, unless the destination was missing */
if (errno != ENOENT) {
fprintf(stderr, "failed on %s - %s\n", dest, strerror(errno));
return -1;
}
st.st_mode = 0;
}
for (i = 1; i < argc - 1; i++) {
const char *source = argv[i];
char fullDest[PATH_MAX + 1 + PATH_MAX + 1];
/* assume we build "dest/source", and let rename() fail on pathsize */
if (strlen(dest) + 1 + strlen(source) + 1 > sizeof(fullDest)) {
fprintf(stderr, "path too long\n");
return -1;
}
strcpy(fullDest, dest);
/* if destination is a directory, concat the source file name */
if (S_ISDIR(st.st_mode)) {
const char *fileName = strrchr(source, '/');
if (fullDest[strlen(fullDest)-1] != '/') {
strcat(fullDest, "/");
}
strcat(fullDest, fileName ? fileName + 1 : source);
}
/* attempt to move it */
if (rename(source, fullDest)) {
fprintf(stderr, "failed on '%s' - %s\n", source, strerror(errno));
return -1;
}
}
return 0;
}
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