/*
 * Copyright 2005-2007, Ingo Weinhold, bonefish@cs.tu-berlin.de.
 * Distributed under the terms of the MIT License.
 */

#include "path_util.h"

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

#include "fssh_errors.h"


namespace FSShell {


fssh_status_t
get_last_path_component(const char *path, char *buffer, int bufferLen)
{
        int len = strlen(path);
        if (len == 0)
                return FSSH_B_BAD_VALUE;

        // eat trailing '/'
        while (len > 0 && path[len - 1] == '/')
                len--;

        if (len == 0) {
                // path is `/'
                len = 1;
        } else {
                // find previous '/'
                int pos = len - 1;
                while (pos > 0 && path[pos] != '/')
                        pos--;
                if (path[pos] == '/')
                        pos++;

                path += pos;
                len -= pos;
        }

        if (len >= bufferLen)
                return FSSH_B_NAME_TOO_LONG;

        memcpy(buffer, path, len);
        buffer[len] = '\0';
        return FSSH_B_OK;
}

char *
make_path(const char *dir, const char *entry)
{
        // get the len
        int dirLen = strlen(dir);
        int entryLen = strlen(entry);
        bool insertSeparator = (dir[dirLen - 1] != '/');
        int pathLen = dirLen + entryLen + (insertSeparator ? 1 : 0) + 1;

        // allocate the path
        char *path = (char*)malloc(pathLen);
        if (!path)
                return NULL;

        // compose the path
        strcpy(path, dir);
        if (insertSeparator)
                strcat(path + dirLen, "/");
        strcat(path + dirLen, entry);

        return path;
}


}       // namespace FSShell