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Function for creating all the folders in a path automatically
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <errno.h>
int mkdirp(const char *path, mode_t mode)
{
char *pos, *base;
char **dirs;
int i, len, dircount, res;
// Count the number of directories in path
dircount = 0;
for (i = 0; path[i] != '\0'; i++) {
if (path[i] == '/') {
dircount++;
}
}
/*
Break down path backwards and store the result in
an array.
For example, for path = /foo/bar/baz we get:
/foo/bar
/foo
*/
base = (char*)path;
dirs = (char**)malloc(sizeof(char*) * (dircount+1));
memset(dirs, '\0', sizeof(char*) * (dircount+1));
i = 0;
while ((pos = strrchr(base, '/')) != NULL) {
len = pos - base;
if (len == 0) {
dirs[i] = NULL;
break;
}
dirs[i] = (char*)malloc(sizeof(char*) * (len + 1));
strncpy(dirs[i], base, len);
dirs[i][len] = '\0';
base = dirs[i];
i++;
}
// Save the number of real directories found
dircount = i;
// Create the directories
res = 0;
for (; i >= 0; i--) {
if (dirs[i] == NULL) {
continue;
}
if (!mkdir(dirs[i], mode)) {
continue;
}
if (errno == EEXIST) {
continue;
}
res = -1;
break;
}
// If the path didn't end with /, the last directory got dropped
// and wasn't created
if (mkdir(path, mode)) {
res = -1;
}
// Free used memory
for (i = 0; i < dircount; i++) {
if (dirs[i] == NULL) {
continue;
}
free(dirs[i]);
}
free(dirs);
return res;
}
int main(int argc, char** argv)
{
if (argc != 2) {
return 1;
}
if (mkdirp(argv[1], 0777) == -1) {
perror("mkdirp");
}
return 0;
}
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