create_path.c

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#include "config.h"
#include "create_path.h"

#include <stdlib.h>
#include <string.h>
#include <libintl.h>

#include "len.h"
#include "output.h"

char *create_path(const char *dir, int dirlen, const char *file, int filelen)
{
        char *path = NULL;
        int pathlen = 0;

        if(dirlen == 0)
                dirlen = str_len(dir);
        if(filelen == 0)
                filelen = str_len(file);

        if(dirlen == 0 && filelen > 0 && file[0] == '/')
        {
                path = strdup(file);
        }
        else if(dirlen > 0 && filelen > 0)
        {
                if(dir[dirlen - 1] == '/')
                  dirlen--;
                if(file[0] == '/')
                {
                  filelen--;
                  file++;
                }
                pathlen = dirlen + filelen + 1;
                path = malloc(pathlen + 1);
                strncpy(path, dir, dirlen);
                path[dirlen] = '/';
                strncpy(path + dirlen + 1, file, filelen);
                path[pathlen] = '\0';
        }
        else
                error(_("create_path: length of filename is zero."));

        return path;
}