Add fork support

[MacVim.git] / src / netbeans.c

/* vi:set ts=8 sts=4 sw=4:
 *
 * VIM - Vi IMproved    by Bram Moolenaar
 *                      Netbeans integration by David Weatherford
 *                      Adopted for Win32 by Sergey Khorev
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 */

/*
 * Implements client side of org.netbeans.modules.emacs editor
 * integration protocol.  Be careful!  The protocol uses offsets
 * which are *between* characters, whereas vim uses line number
 * and column number which are *on* characters.
 * See ":help netbeans-protocol" for explanation.
 */

#include "vim.h"

#if defined(FEAT_NETBEANS_INTG) || defined(PROTO)

/* Note: when making changes here also adjust configure.in. */
# include <fcntl.h>
#ifdef WIN32
# ifdef DEBUG
#  include <tchar.h>    /* for _T definition for TRACEn macros */
# endif
# include "vimio.h"
/* WinSock API is separated from C API, thus we can't use read(), write(),
 * errno... */
# define sock_errno WSAGetLastError()
# define ECONNREFUSED WSAECONNREFUSED
# ifdef EINTR
#  undef EINTR
# endif
# define EINTR WSAEINTR
# define sock_write(sd, buf, len) send(sd, buf, len, 0)
# define sock_read(sd, buf, len) recv(sd, buf, len, 0)
# define sock_close(sd) closesocket(sd)
# define sleep(t) Sleep(t*1000) /* WinAPI Sleep() accepts milliseconds */
#else
# include <netdb.h>
# include <netinet/in.h>
# include <sys/socket.h>
# ifdef HAVE_LIBGEN_H
#  include <libgen.h>
# endif
# define sock_errno errno
# define sock_write(sd, buf, len) write(sd, buf, len)
# define sock_read(sd, buf, len) read(sd, buf, len)
# define sock_close(sd) close(sd)
#endif

#include "version.h"

#define INET_SOCKETS

#define GUARDED         10000 /* typenr for "guarded" annotation */
#define GUARDEDOFFSET 1000000 /* base for "guarded" sign id's */

/* The first implementation (working only with Netbeans) returned "1.1".  The
 * protocol implemented here also supports A-A-P. */
static char *ExtEdProtocolVersion = "2.4";

static long pos2off __ARGS((buf_T *, pos_T *));
static pos_T *off2pos __ARGS((buf_T *, long));
static pos_T *get_off_or_lnum __ARGS((buf_T *buf, char_u **argp));
static long get_buf_size __ARGS((buf_T *));
static void netbeans_keystring __ARGS((int key, char *keystr));
static void special_keys __ARGS((char_u *args));

static void netbeans_connect __ARGS((void));
static int getConnInfo __ARGS((char *file, char **host, char **port, char **password));

static void nb_init_graphics __ARGS((void));
static void coloncmd __ARGS((char *cmd, ...));
static void nb_set_curbuf __ARGS((buf_T *buf));
#ifdef FEAT_GUI_MOTIF
static void messageFromNetbeans __ARGS((XtPointer, int *, XtInputId *));
#endif
#ifdef FEAT_GUI_GTK
static void messageFromNetbeans __ARGS((gpointer, gint, GdkInputCondition));
#endif
static void nb_parse_cmd __ARGS((char_u *));
static int  nb_do_cmd __ARGS((int, char_u *, int, int, char_u *));
static void nb_send __ARGS((char *buf, char *fun));

#ifdef WIN64
typedef __int64 NBSOCK;
#else
typedef int NBSOCK;
#endif

static NBSOCK sd = -1;                  /* socket fd for Netbeans connection */
#ifdef FEAT_GUI_MOTIF
static XtInputId inputHandler;          /* Cookie for input */
#endif
#ifdef FEAT_GUI_GTK
static gint inputHandler;               /* Cookie for input */
#endif
#ifdef FEAT_GUI_W32
static int  inputHandler = -1;          /* simply ret.value of WSAAsyncSelect() */
extern HWND s_hwnd;                     /* Gvim's Window handle */
#endif
static int r_cmdno;                     /* current command number for reply */
static int haveConnection = FALSE;      /* socket is connected and
                                           initialization is done */
#ifdef FEAT_GUI_MOTIF
static void netbeans_Xt_connect __ARGS((void *context));
#endif
#ifdef FEAT_GUI_GTK
static void netbeans_gtk_connect __ARGS((void));
#endif
#ifdef FEAT_GUI_W32
static void netbeans_w32_connect __ARGS((void));
#endif

static int dosetvisible = FALSE;

/*
 * Include the debugging code if wanted.
 */
#ifdef NBDEBUG
# include "nbdebug.c"
#endif

/* Connect back to Netbeans process */
#ifdef FEAT_GUI_MOTIF
    static void
netbeans_Xt_connect(void *context)
{
    netbeans_connect();
    if (sd > 0)
    {
        /* tell notifier we are interested in being called
         * when there is input on the editor connection socket
         */
        inputHandler = XtAppAddInput((XtAppContext)context, sd,
                             (XtPointer)(XtInputReadMask + XtInputExceptMask),
                                                   messageFromNetbeans, NULL);
    }
}

    static void
netbeans_disconnect(void)
{
    if (inputHandler != (XtInputId)NULL)
    {
        XtRemoveInput(inputHandler);
        inputHandler = (XtInputId)NULL;
    }
    sd = -1;
    haveConnection = FALSE;
# ifdef FEAT_BEVAL
    bevalServers &= ~BEVAL_NETBEANS;
# endif
}
#endif /* FEAT_MOTIF_GUI */

#ifdef FEAT_GUI_GTK
    static void
netbeans_gtk_connect(void)
{
    netbeans_connect();
    if (sd > 0)
    {
        /*
         * Tell gdk we are interested in being called when there
         * is input on the editor connection socket
         */
        inputHandler = gdk_input_add((gint)sd, (GdkInputCondition)
                ((int)GDK_INPUT_READ + (int)GDK_INPUT_EXCEPTION),
                                                   messageFromNetbeans, NULL);
    }
}

    static void
netbeans_disconnect(void)
{
    if (inputHandler != 0)
    {
        gdk_input_remove(inputHandler);
        inputHandler = 0;
    }
    sd = -1;
    haveConnection = FALSE;
# ifdef FEAT_BEVAL
    bevalServers &= ~BEVAL_NETBEANS;
# endif
}
#endif /* FEAT_GUI_GTK */

#if defined(FEAT_GUI_W32) || defined(PROTO)
    static void
netbeans_w32_connect(void)
{
    netbeans_connect();
    if (sd > 0)
    {
        /*
         * Tell Windows we are interested in receiving message when there
         * is input on the editor connection socket
         */
        inputHandler = WSAAsyncSelect(sd, s_hwnd, WM_NETBEANS, FD_READ);
    }
}

    static void
netbeans_disconnect(void)
{
    if (inputHandler == 0)
    {
        WSAAsyncSelect(sd, s_hwnd, 0, 0);
        inputHandler = -1;
    }
    sd = -1;
    haveConnection = FALSE;
# ifdef FEAT_BEVAL
    bevalServers &= ~BEVAL_NETBEANS;
# endif
}
#endif /* FEAT_GUI_W32 */

#define NB_DEF_HOST "localhost"
#define NB_DEF_ADDR "3219"
#define NB_DEF_PASS "changeme"

    static void
netbeans_connect(void)
{
#ifdef INET_SOCKETS
    struct sockaddr_in  server;
    struct hostent *    host;
# ifdef FEAT_GUI_W32
    u_short             port;
# else
    int                 port;
#endif
#else
    struct sockaddr_un  server;
#endif
    char        buf[32];
    char        *hostname = NULL;
    char        *address = NULL;
    char        *password = NULL;
    char        *fname;
    char        *arg = NULL;

    if (netbeansArg[3] == '=')
    {
        /* "-nb=fname": Read info from specified file. */
        if (getConnInfo(netbeansArg + 4, &hostname, &address, &password)
                                                                      == FAIL)
            return;
    }
    else
    {
        if (netbeansArg[3] == ':')
            /* "-nb:<host>:<addr>:<password>": get info from argument */
            arg = netbeansArg + 4;
        if (arg == NULL && (fname = getenv("__NETBEANS_CONINFO")) != NULL)
        {
            /* "-nb": get info from file specified in environment */
            if (getConnInfo(fname, &hostname, &address, &password) == FAIL)
                return;
        }
        else
        {
            if (arg != NULL)
            {
                /* "-nb:<host>:<addr>:<password>": get info from argument */
                hostname = arg;
                address = strchr(hostname, ':');
                if (address != NULL)
                {
                    *address++ = '\0';
                    password = strchr(address, ':');
                    if (password != NULL)
                        *password++ = '\0';
                }
            }

            /* Get the missing values from the environment. */
            if (hostname == NULL || *hostname == '\0')
                hostname = getenv("__NETBEANS_HOST");
            if (address == NULL)
                address = getenv("__NETBEANS_SOCKET");
            if (password == NULL)
                password = getenv("__NETBEANS_VIM_PASSWORD");

            /* Move values to allocated memory. */
            if (hostname != NULL)
                hostname = (char *)vim_strsave((char_u *)hostname);
            if (address != NULL)
                address = (char *)vim_strsave((char_u *)address);
            if (password != NULL)
                password = (char *)vim_strsave((char_u *)password);
        }
    }

    /* Use the default when a value is missing. */
    if (hostname == NULL || *hostname == '\0')
    {
        vim_free(hostname);
        hostname = (char *)vim_strsave((char_u *)NB_DEF_HOST);
    }
    if (address == NULL || *address == '\0')
    {
        vim_free(address);
        address = (char *)vim_strsave((char_u *)NB_DEF_ADDR);
    }
    if (password == NULL || *password == '\0')
    {
        vim_free(password);
        password = (char *)vim_strsave((char_u *)NB_DEF_PASS);
    }
    if (hostname == NULL || address == NULL || password == NULL)
        goto theend;        /* out of memory */

#ifdef INET_SOCKETS
    port = atoi(address);

    if ((sd = (NBSOCK)socket(AF_INET, SOCK_STREAM, 0)) == (NBSOCK)-1)
    {
        PERROR("socket() in netbeans_connect()");
        goto theend;
    }

    /* Get the server internet address and put into addr structure */
    /* fill in the socket address structure and connect to server */
    memset((char *)&server, '\0', sizeof(server));
    server.sin_family = AF_INET;
    server.sin_port = htons(port);
    if ((host = gethostbyname(hostname)) == NULL)
    {
        if (mch_access(hostname, R_OK) >= 0)
        {
            /* DEBUG: input file */
            sd = mch_open(hostname, O_RDONLY, 0);
            goto theend;
        }
        PERROR("gethostbyname() in netbeans_connect()");
        sd = -1;
        goto theend;
    }
    memcpy((char *)&server.sin_addr, host->h_addr, host->h_length);
#else
    if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
    {
        PERROR("socket()");
        goto theend;
    }

    server.sun_family = AF_UNIX;
    strcpy(server.sun_path, address);
#endif
    /* Connect to server */
    if (connect(sd, (struct sockaddr *)&server, sizeof(server)))
    {
        nbdebug(("netbeans_connect: Connect failed with errno %d\n", sock_errno));
        if (sock_errno == ECONNREFUSED)
        {
            sock_close(sd);
#ifdef INET_SOCKETS
            if ((sd = (NBSOCK)socket(AF_INET, SOCK_STREAM, 0)) == (NBSOCK)-1)
            {
                PERROR("socket()#2 in netbeans_connect()");
                goto theend;
            }
#else
            if ((sd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
            {
                PERROR("socket()#2 in netbeans_connect()");
                goto theend;
            }
#endif
            if (connect(sd, (struct sockaddr *)&server, sizeof(server)))
            {
                int retries = 36;
                int success = FALSE;
                while (retries--
                             && ((sock_errno == ECONNREFUSED) || (sock_errno == EINTR)))
                {
                    nbdebug(("retrying...\n"));
                    sleep(5);
                    if (connect(sd, (struct sockaddr *)&server,
                                sizeof(server)) == 0)
                    {
                        success = TRUE;
                        break;
                    }
                }
                if (!success)
                {
                    /* Get here when the server can't be found. */
                    PERROR(_("Cannot connect to Netbeans #2"));
                    getout(1);
                }
            }

        }
        else
        {
            PERROR(_("Cannot connect to Netbeans"));
            getout(1);
        }
    }

    vim_snprintf(buf, sizeof(buf), "AUTH %s\n", password);
    nb_send(buf, "netbeans_connect");

    sprintf(buf, "0:version=0 \"%s\"\n", ExtEdProtocolVersion);
    nb_send(buf, "externaleditor_version");

/*    nb_init_graphics();  delay until needed */

    haveConnection = TRUE;

theend:
    vim_free(hostname);
    vim_free(address);
    vim_free(password);
    return;
}

/*
 * Obtain the NetBeans hostname, port address and password from a file.
 * Return the strings in allocated memory.
 * Return FAIL if the file could not be read, OK otherwise (no matter what it
 * contains).
 */
    static int
getConnInfo(char *file, char **host, char **port, char **auth)
{
    FILE *fp;
    char_u buf[BUFSIZ];
    char_u *lp;
    char_u *nl;
#ifdef UNIX
    struct stat st;

    /*
     * For Unix only accept the file when it's not accessible by others.
     * The open will then fail if we don't own the file.
     */
    if (mch_stat(file, &st) == 0 && (st.st_mode & 0077) != 0)
    {
        EMSG2(_("E668: Wrong access mode for NetBeans connection info file: \"%s\""),
                                                                        file);
        return FAIL;
    }
#endif

    fp = mch_fopen(file, "r");
    if (fp == NULL)
    {
        PERROR("E660: Cannot open NetBeans connection info file");
        return FAIL;
    }

    /* Read the file. There should be one of each parameter */
    while ((lp = (char_u *)fgets((char *)buf, BUFSIZ, fp)) != NULL)
    {
        if ((nl = vim_strchr(lp, '\n')) != NULL)
            *nl = 0;        /* strip off the trailing newline */

        if (STRNCMP(lp, "host=", 5) == 0)
        {
            vim_free(*host);
            *host = (char *)vim_strsave(&buf[5]);
        }
        else if (STRNCMP(lp, "port=", 5) == 0)
        {
            vim_free(*port);
            *port = (char *)vim_strsave(&buf[5]);
        }
        else if (STRNCMP(lp, "auth=", 5) == 0)
        {
            vim_free(*auth);
            *auth = (char *)vim_strsave(&buf[5]);
        }
    }
    fclose(fp);

    return OK;
}


struct keyqueue
{
    int              key;
    struct keyqueue *next;
    struct keyqueue *prev;
};

typedef struct keyqueue keyQ_T;

static keyQ_T keyHead; /* dummy node, header for circular queue */


/*
 * Queue up key commands sent from netbeans.
 */
    static void
postpone_keycommand(int key)
{
    keyQ_T *node;

    node = (keyQ_T *)alloc(sizeof(keyQ_T));

    if (keyHead.next == NULL) /* initialize circular queue */
    {
        keyHead.next = &keyHead;
        keyHead.prev = &keyHead;
    }

    /* insert node at tail of queue */
    node->next = &keyHead;
    node->prev = keyHead.prev;
    keyHead.prev->next = node;
    keyHead.prev = node;

    node->key = key;
}

/*
 * Handle any queued-up NetBeans keycommands to be send.
 */
    static void
handle_key_queue(void)
{
    while (keyHead.next && keyHead.next != &keyHead)
    {
        /* first, unlink the node */
        keyQ_T *node = keyHead.next;
        keyHead.next = node->next;
        node->next->prev = node->prev;

        /* now, send the keycommand */
        netbeans_keycommand(node->key);

        /* Finally, dispose of the node */
        vim_free(node);
    }
}


struct cmdqueue
{
    char_u          *buffer;
    struct cmdqueue *next;
    struct cmdqueue *prev;
};

typedef struct cmdqueue queue_T;

static queue_T head;  /* dummy node, header for circular queue */


/*
 * Put the buffer on the work queue; possibly save it to a file as well.
 */
    static void
save(char_u *buf, int len)
{
    queue_T *node;

    node = (queue_T *)alloc(sizeof(queue_T));
    if (node == NULL)
        return;     /* out of memory */
    node->buffer = alloc(len + 1);
    if (node->buffer == NULL)
    {
        vim_free(node);
        return;     /* out of memory */
    }
    mch_memmove(node->buffer, buf, (size_t)len);
    node->buffer[len] = NUL;

    if (head.next == NULL)   /* initialize circular queue */
    {
        head.next = &head;
        head.prev = &head;
    }

    /* insert node at tail of queue */
    node->next = &head;
    node->prev = head.prev;
    head.prev->next = node;
    head.prev = node;

#ifdef NBDEBUG
    {
        static int outfd = -2;

        /* possibly write buffer out to a file */
        if (outfd == -3)
            return;

        if (outfd == -2)
        {
            char *file = getenv("__NETBEANS_SAVE");
            if (file == NULL)
                outfd = -3;
            else
                outfd = mch_open(file, O_WRONLY|O_CREAT|O_TRUNC, 0666);
        }

        if (outfd >= 0)
            write(outfd, buf, len);
    }
#endif
}


/*
 * While there's still a command in the work queue, parse and execute it.
 */
    static void
nb_parse_messages(void)
{
    char_u      *p;
    queue_T     *node;

    while (head.next != &head)
    {
        node = head.next;

        /* Locate the first line in the first buffer. */
        p = vim_strchr(node->buffer, '\n');
        if (p == NULL)
        {
            /* Command isn't complete.  If there is no following buffer,
             * return (wait for more). If there is another buffer following,
             * prepend the text to that buffer and delete this one.  */
            if (node->next == &head)
                return;
            p = alloc((unsigned)(STRLEN(node->buffer) + STRLEN(node->next->buffer) + 1));
            if (p == NULL)
                return;     /* out of memory */
            STRCPY(p, node->buffer);
            STRCAT(p, node->next->buffer);
            vim_free(node->next->buffer);
            node->next->buffer = p;

            /* dispose of the node and buffer */
            head.next = node->next;
            node->next->prev = node->prev;
            vim_free(node->buffer);
            vim_free(node);
        }
        else
        {
            /* There is a complete command at the start of the buffer.
             * Terminate it with a NUL.  When no more text is following unlink
             * the buffer.  Do this before executing, because new buffers can
             * be added while busy handling the command. */
            *p++ = NUL;
            if (*p == NUL)
            {
                head.next = node->next;
                node->next->prev = node->prev;
            }

            /* now, parse and execute the commands */
            nb_parse_cmd(node->buffer);

            if (*p == NUL)
            {
                /* buffer finished, dispose of the node and buffer */
                vim_free(node->buffer);
                vim_free(node);
            }
            else
            {
                /* more follows, move to the start */
                mch_memmove(node->buffer, p, STRLEN(p) + 1);
            }
        }
    }
}

/* Buffer size for reading incoming messages. */
#define MAXMSGSIZE 4096

/*
 * Read and process a command from netbeans.
 */
/*ARGSUSED*/
#if defined(FEAT_GUI_W32) || defined(PROTO)
/* Use this one when generating prototypes, the others are static. */
    void
messageFromNetbeansW32()
#else
# ifdef FEAT_GUI_MOTIF
    static void
messageFromNetbeans(XtPointer clientData, int *unused1, XtInputId *unused2)
# endif
# ifdef FEAT_GUI_GTK
    static void
messageFromNetbeans(gpointer clientData, gint unused1,
                                                    GdkInputCondition unused2)
# endif
#endif
{
    static char_u       *buf = NULL;
    int                 len;
    int                 readlen = 0;
    static int          level = 0;

    if (sd < 0)
    {
        nbdebug(("messageFromNetbeans() called without a socket\n"));
        return;
    }

    ++level;  /* recursion guard; this will be called from the X event loop */

    /* Allocate a buffer to read into. */
    if (buf == NULL)
    {
        buf = alloc(MAXMSGSIZE);
        if (buf == NULL)
            return;     /* out of memory! */
    }

    /* Keep on reading for as long as there is something to read. */
    for (;;)
    {
        len = sock_read(sd, buf, MAXMSGSIZE);
        if (len <= 0)
            break;      /* error or nothing more to read */

        /* Store the read message in the queue. */
        save(buf, len);
        readlen += len;
        if (len < MAXMSGSIZE)
            break;      /* did read everything that's available */
    }

    if (readlen <= 0)
    {
        /* read error or didn't read anything */
        netbeans_disconnect();
        nbdebug(("messageFromNetbeans: Error in read() from socket\n"));
        if (len < 0)
            PERROR(_("read from Netbeans socket"));
        return; /* don't try to parse it */
    }

    /* Parse the messages, but avoid recursion. */
    if (level == 1)
        nb_parse_messages();

    --level;
}

/*
 * Handle one NUL terminated command.
 *
 * format of a command from netbeans:
 *
 *    6:setTitle!84 "a.c"
 *
 *    bufno
 *     colon
 *      cmd
 *              !
 *               cmdno
 *                  args
 *
 * for function calls, the ! is replaced by a /
 */
    static void
nb_parse_cmd(char_u *cmd)
{
    char        *verb;
    char        *q;
    int         bufno;
    int         isfunc = -1;

    if (STRCMP(cmd, "DISCONNECT") == 0)
    {
        /* We assume the server knows that we can safely exit! */
        if (sd >= 0)
            sock_close(sd);
        /* Disconnect before exiting, Motif hangs in a Select error
         * message otherwise. */
        netbeans_disconnect();
        getout(0);
        /* NOTREACHED */
    }

    if (STRCMP(cmd, "DETACH") == 0)
    {
        /* The IDE is breaking the connection. */
        if (sd >= 0)
            sock_close(sd);
        netbeans_disconnect();
        return;
    }

    bufno = strtol((char *)cmd, &verb, 10);

    if (*verb != ':')
    {
        EMSG2("E627: missing colon: %s", cmd);
        return;
    }
    ++verb; /* skip colon */

    for (q = verb; *q; q++)
    {
        if (*q == '!')
        {
            *q++ = NUL;
            isfunc = 0;
            break;
        }
        else if (*q == '/')
        {
            *q++ = NUL;
            isfunc = 1;
            break;
        }
    }

    if (isfunc < 0)
    {
        EMSG2("E628: missing ! or / in: %s", cmd);
        return;
    }

    r_cmdno = strtol(q, &q, 10);

    q = (char *)skipwhite((char_u *)q);

    if (nb_do_cmd(bufno, (char_u *)verb, isfunc, r_cmdno, (char_u *)q) == FAIL)
    {
#ifdef NBDEBUG
        /*
         * This happens because the ExtEd can send a cammand or 2 after
         * doing a stopDocumentListen command. It doesn't harm anything
         * so I'm disabling it except for debugging.
         */
        nbdebug(("nb_parse_cmd: Command error for \"%s\"\n", cmd));
        EMSG("E629: bad return from nb_do_cmd");
#endif
    }
}

struct nbbuf_struct
{
    buf_T               *bufp;
    unsigned int         fireChanges:1;
    unsigned int         initDone:1;
    unsigned int         insertDone:1;
    unsigned int         modified:1;
    int                  nbbuf_number;
    char                *displayname;
    int                 *signmap;
    short_u              signmaplen;
    short_u              signmapused;
};

typedef struct nbbuf_struct nbbuf_T;

static nbbuf_T *buf_list = 0;
static int buf_list_size = 0;   /* size of buf_list */
static int buf_list_used = 0;   /* nr of entries in buf_list actually in use */

static char **globalsignmap;
static int globalsignmaplen;
static int globalsignmapused;

static int  mapsigntype __ARGS((nbbuf_T *, int localsigntype));
static void addsigntype __ARGS((nbbuf_T *, int localsigntype, char_u *typeName,
                        char_u *tooltip, char_u *glyphfile,
                        int usefg, int fg, int usebg, int bg));
static void print_read_msg __ARGS((nbbuf_T *buf));
static void print_save_msg __ARGS((nbbuf_T *buf, long nchars));

static int curPCtype = -1;

/*
 * Get the Netbeans buffer number for the specified buffer.
 */
    static int
nb_getbufno(buf_T *bufp)
{
    int i;

    for (i = 0; i < buf_list_used; i++)
        if (buf_list[i].bufp == bufp)
            return i;
    return -1;
}

/*
 * Is this a NetBeans-owned buffer?
 */
    int
isNetbeansBuffer(buf_T *bufp)
{
    return usingNetbeans && bufp->b_netbeans_file;
}

/*
 * NetBeans and Vim have different undo models. In Vim, the file isn't
 * changed if changes are undone via the undo command. In NetBeans, once
 * a change has been made the file is marked as modified until saved. It
 * doesn't matter if the change was undone.
 *
 * So this function is for the corner case where Vim thinks a buffer is
 * unmodified but NetBeans thinks it IS modified.
 */
    int
isNetbeansModified(buf_T *bufp)
{
    if (usingNetbeans && bufp->b_netbeans_file)
    {
        int bufno = nb_getbufno(bufp);

        if (bufno > 0)
            return buf_list[bufno].modified;
        else
            return FALSE;
    }
    else
        return FALSE;
}

/*
 * Given a Netbeans buffer number, return the netbeans buffer.
 * Returns NULL for 0 or a negative number. A 0 bufno means a
 * non-buffer related command has been sent.
 */
    static nbbuf_T *
nb_get_buf(int bufno)
{
    /* find or create a buffer with the given number */
    int incr;

    if (bufno <= 0)
        return NULL;

    if (!buf_list)
    {
        /* initialize */
        buf_list = (nbbuf_T *)alloc_clear(100 * sizeof(nbbuf_T));
        buf_list_size = 100;
    }
    if (bufno >= buf_list_used) /* new */
    {
        if (bufno >= buf_list_size) /* grow list */
        {
            incr = bufno - buf_list_size + 90;
            buf_list_size += incr;
            buf_list = (nbbuf_T *)vim_realloc(
                                   buf_list, buf_list_size * sizeof(nbbuf_T));
            memset(buf_list + buf_list_size - incr, 0, incr * sizeof(nbbuf_T));
        }

        while (buf_list_used <= bufno)
        {
            /* Default is to fire text changes. */
            buf_list[buf_list_used].fireChanges = 1;
            ++buf_list_used;
        }
    }

    return buf_list + bufno;
}

/*
 * Return the number of buffers that are modified.
 */
    static int
count_changed_buffers(void)
{
    buf_T       *bufp;
    int         n;

    n = 0;
    for (bufp = firstbuf; bufp != NULL; bufp = bufp->b_next)
        if (bufp->b_changed)
            ++n;
    return n;
}

/*
 * End the netbeans session.
 */
    void
netbeans_end(void)
{
    int i;
    static char buf[128];

    if (!haveConnection)
        return;

    for (i = 0; i < buf_list_used; i++)
    {
        if (!buf_list[i].bufp)
            continue;
        if (netbeansForcedQuit)
        {
            /* mark as unmodified so NetBeans won't put up dialog on "killed" */
            sprintf(buf, "%d:unmodified=%d\n", i, r_cmdno);
            nbdebug(("EVT: %s", buf));
            nb_send(buf, "netbeans_end");
        }
        sprintf(buf, "%d:killed=%d\n", i, r_cmdno);
        nbdebug(("EVT: %s", buf));
/*      nb_send(buf, "netbeans_end");    avoid "write failed" messages */
        if (sd >= 0)
            sock_write(sd, buf, (int)STRLEN(buf));  /* ignore errors */
    }
}

/*
 * Send a message to netbeans.
 */
    static void
nb_send(char *buf, char *fun)
{
    /* Avoid giving pages full of error messages when the other side has
     * exited, only mention the first error until the connection works again. */
    static int did_error = FALSE;

    if (sd < 0)
    {
        if (!did_error)
            EMSG2("E630: %s(): write while not connected", fun);
        did_error = TRUE;
    }
    else if (sock_write(sd, buf, (int)STRLEN(buf)) != (int)STRLEN(buf))
    {
        if (!did_error)
            EMSG2("E631: %s(): write failed", fun);
        did_error = TRUE;
    }
    else
        did_error = FALSE;
}

/*
 * Some input received from netbeans requires a response. This function
 * handles a response with no information (except the command number).
 */
    static void
nb_reply_nil(int cmdno)
{
    char reply[32];

    if (!haveConnection)
        return;

    nbdebug(("REP %d: <none>\n", cmdno));

    sprintf(reply, "%d\n", cmdno);
    nb_send(reply, "nb_reply_nil");
}


/*
 * Send a response with text.
 * "result" must have been quoted already (using nb_quote()).
 */
    static void
nb_reply_text(int cmdno, char_u *result)
{
    char_u *reply;

    if (!haveConnection)
        return;

    nbdebug(("REP %d: %s\n", cmdno, (char *)result));

    reply = alloc((unsigned)STRLEN(result) + 32);
    sprintf((char *)reply, "%d %s\n", cmdno, (char *)result);
    nb_send((char *)reply, "nb_reply_text");

    vim_free(reply);
}


/*
 * Send a response with a number result code.
 */
    static void
nb_reply_nr(int cmdno, long result)
{
    char reply[32];

    if (!haveConnection)
        return;

    nbdebug(("REP %d: %ld\n", cmdno, result));

    sprintf(reply, "%d %ld\n", cmdno, result);
    nb_send(reply, "nb_reply_nr");
}


/*
 * Encode newline, ret, backslash, double quote for transmission to NetBeans.
 */
    static char_u *
nb_quote(char_u *txt)
{
    char_u *buf = alloc((unsigned)(2 * STRLEN(txt) + 1));
    char_u *p = txt;
    char_u *q = buf;

    if (buf == NULL)
        return NULL;
    for (; *p; p++)
    {
        switch (*p)
        {
            case '\"':
            case '\\':
                *q++ = '\\'; *q++ = *p; break;
         /* case '\t': */
         /*     *q++ = '\\'; *q++ = 't'; break; */
            case '\n':
                *q++ = '\\'; *q++ = 'n'; break;
            case '\r':
                *q++ = '\\'; *q++ = 'r'; break;
            default:
                *q++ = *p;
                break;
        }
    }
    *q++ = '\0';

    return buf;
}


/*
 * Remove top level double quotes; convert backslashed chars.
 * Returns an allocated string (NULL for failure).
 * If "endp" is not NULL it is set to the character after the terminating
 * quote.
 */
    static char *
nb_unquote(char_u *p, char_u **endp)
{
    char *result = 0;
    char *q;
    int done = 0;

    /* result is never longer than input */
    result = (char *)alloc_clear((unsigned)STRLEN(p) + 1);
    if (result == NULL)
        return NULL;

    if (*p++ != '"')
    {
        nbdebug(("nb_unquote called with string that doesn't start with a quote!: %s\n",
                        p));
        result[0] = NUL;
        return result;
    }

    for (q = result; !done && *p != NUL;)
    {
        switch (*p)
        {
            case '"':
                /*
                 * Unbackslashed dquote marks the end, if first char was dquote.
                 */
                done = 1;
                break;

            case '\\':
                ++p;
                switch (*p)
                {
                    case '\\':  *q++ = '\\';    break;
                    case 'n':   *q++ = '\n';    break;
                    case 't':   *q++ = '\t';    break;
                    case 'r':   *q++ = '\r';    break;
                    case '"':   *q++ = '"';     break;
                    case NUL:   --p;            break;
                    /* default: skip over illegal chars */
                }
                ++p;
                break;

            default:
                *q++ = *p++;
        }
    }

    if (endp != NULL)
        *endp = p;

    return result;
}

#define SKIP_STOP 2
#define streq(a,b) (strcmp(a,b) == 0)
static int needupdate = 0;
static int inAtomic = 0;

/*
 * Do the actual processing of a single netbeans command or function.
 * The difference between a command and function is that a function
 * gets a response (it's required) but a command does not.
 * For arguments see comment for nb_parse_cmd().
 */
    static int
nb_do_cmd(
    int         bufno,
    char_u      *cmd,
    int         func,
    int         cmdno,
    char_u      *args)      /* points to space before arguments or NUL */
{
    int         doupdate = 0;
    long        off = 0;
    nbbuf_T     *buf = nb_get_buf(bufno);
    static int  skip = 0;
    int         retval = OK;
    char        *cp;        /* for when a char pointer is needed */

    nbdebug(("%s %d: (%d) %s %s\n", (func) ? "FUN" : "CMD", cmdno, bufno, cmd,
        STRCMP(cmd, "insert") == 0 ? "<text>" : (char *)args));

    if (func)
    {
/* =====================================================================*/
        if (streq((char *)cmd, "getModified"))
        {
            if (buf == NULL || buf->bufp == NULL)
                /* Return the number of buffers that are modified. */
                nb_reply_nr(cmdno, (long)count_changed_buffers());
            else
                /* Return whether the buffer is modified. */
                nb_reply_nr(cmdno, (long)(buf->bufp->b_changed
                                           || isNetbeansModified(buf->bufp)));
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "saveAndExit"))
        {
            /* Note: this will exit Vim if successful. */
            coloncmd(":confirm qall");

            /* We didn't exit: return the number of changed buffers. */
            nb_reply_nr(cmdno, (long)count_changed_buffers());
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "getCursor"))
        {
            char_u text[200];

            /* Note: nb_getbufno() may return -1.  This indicates the IDE
             * didn't assign a number to the current buffer in response to a
             * fileOpened event. */
            sprintf((char *)text, "%d %ld %d %ld",
                    nb_getbufno(curbuf),
                    (long)curwin->w_cursor.lnum,
                    (int)curwin->w_cursor.col,
                    pos2off(curbuf, &curwin->w_cursor));
            nb_reply_text(cmdno, text);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "getAnno"))
        {
            long linenum = 0;
#ifdef FEAT_SIGNS
            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in getAnno"));
                EMSG("E652: null bufp in getAnno");
                retval = FAIL;
            }
            else
            {
                int serNum;

                cp = (char *)args;
                serNum = strtol(cp, &cp, 10);
                /* If the sign isn't found linenum will be zero. */
                linenum = (long)buf_findsign(buf->bufp, serNum);
            }
#endif
            nb_reply_nr(cmdno, linenum);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "getLength"))
        {
            long len = 0;

            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in getLength"));
                EMSG("E632: null bufp in getLength");
                retval = FAIL;
            }
            else
            {
                len = get_buf_size(buf->bufp);
            }
            nb_reply_nr(cmdno, len);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "getText"))
        {
            long        len;
            linenr_T    nlines;
            char_u      *text = NULL;
            linenr_T    lno = 1;
            char_u      *p;
            char_u      *line;

            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in getText"));
                EMSG("E633: null bufp in getText");
                retval = FAIL;
            }
            else
            {
                len = get_buf_size(buf->bufp);
                nlines = buf->bufp->b_ml.ml_line_count;
                text = alloc((unsigned)((len > 0)
                                                 ? ((len + nlines) * 2) : 4));
                if (text == NULL)
                {
                    nbdebug(("    nb_do_cmd: getText has null text field\n"));
                    retval = FAIL;
                }
                else
                {
                    p = text;
                    *p++ = '\"';
                    for (; lno <= nlines ; lno++)
                    {
                        line = nb_quote(ml_get_buf(buf->bufp, lno, FALSE));
                        if (line != NULL)
                        {
                            STRCPY(p, line);
                            p += STRLEN(line);
                            *p++ = '\\';
                            *p++ = 'n';
                            vim_free(line);
                        }
                    }
                    *p++ = '\"';
                    *p = '\0';
                }
            }
            if (text == NULL)
                nb_reply_text(cmdno, (char_u *)"");
            else
            {
                nb_reply_text(cmdno, text);
                vim_free(text);
            }
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "remove"))
        {
            long count;
            pos_T first, last;
            pos_T *pos;
            int oldFire = netbeansFireChanges;
            int oldSuppress = netbeansSuppressNoLines;
            int wasChanged;

            if (skip >= SKIP_STOP)
            {
                nbdebug(("    Skipping %s command\n", (char *) cmd));
                nb_reply_nil(cmdno);
                return OK;
            }

            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in remove"));
                EMSG("E634: null bufp in remove");
                retval = FAIL;
            }
            else
            {
                netbeansFireChanges = FALSE;
                netbeansSuppressNoLines = TRUE;

                nb_set_curbuf(buf->bufp);
                wasChanged = buf->bufp->b_changed;
                cp = (char *)args;
                off = strtol(cp, &cp, 10);
                count = strtol(cp, &cp, 10);
                args = (char_u *)cp;
                /* delete "count" chars, starting at "off" */
                pos = off2pos(buf->bufp, off);
                if (!pos)
                {
                    nb_reply_text(cmdno, (char_u *)"!bad position");
                    netbeansFireChanges = oldFire;
                    netbeansSuppressNoLines = oldSuppress;
                    return FAIL;
                }
                first = *pos;
                nbdebug(("    FIRST POS: line %d, col %d\n", first.lnum, first.col));
                pos = off2pos(buf->bufp, off+count-1);
                if (!pos)
                {
                    nb_reply_text(cmdno, (char_u *)"!bad count");
                    netbeansFireChanges = oldFire;
                    netbeansSuppressNoLines = oldSuppress;
                    return FAIL;
                }
                last = *pos;
                nbdebug(("    LAST POS: line %d, col %d\n", last.lnum, last.col));
                curwin->w_cursor = first;
                doupdate = 1;

                /* keep part of first line */
                if (first.lnum == last.lnum && first.col != last.col)
                {
                    /* deletion is within one line */
                    char_u *p = ml_get(first.lnum);
                    mch_memmove(p + first.col, p + last.col + 1, STRLEN(p + last.col) + 1);
                    nbdebug(("    NEW LINE %d: %s\n", first.lnum, p));
                    ml_replace(first.lnum, p, TRUE);
                }

                if (first.lnum < last.lnum)
                {
                    int i;

                    /* delete signs from the lines being deleted */
                    for (i = first.lnum; i <= last.lnum; i++)
                    {
                        int id = buf_findsign_id(buf->bufp, (linenr_T)i);
                        if (id > 0)
                        {
                            nbdebug(("    Deleting sign %d on line %d\n", id, i));
                            buf_delsign(buf->bufp, id);
                        }
                        else
                            nbdebug(("    No sign on line %d\n", i));
                    }

                    /* delete whole lines */
                    nbdebug(("    Deleting lines %d through %d\n", first.lnum, last.lnum));
                    del_lines(last.lnum - first.lnum + 1, FALSE);
                }
                buf->bufp->b_changed = wasChanged; /* logically unchanged */
                netbeansFireChanges = oldFire;
                netbeansSuppressNoLines = oldSuppress;

                u_blockfree(buf->bufp);
                u_clearall(buf->bufp);
            }
            nb_reply_nil(cmdno);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "insert"))
        {
            char_u      *to_free;

            if (skip >= SKIP_STOP)
            {
                nbdebug(("    Skipping %s command\n", (char *) cmd));
                nb_reply_nil(cmdno);
                return OK;
            }

            /* get offset */
            cp = (char *)args;
            off = strtol(cp, &cp, 10);
            args = (char_u *)cp;

            /* get text to be inserted */
            args = skipwhite(args);
            args = to_free = (char_u *)nb_unquote(args, NULL);
            /*
            nbdebug(("    CHUNK[%d]: %d bytes at offset %d\n",
                    buf->bufp->b_ml.ml_line_count, STRLEN(args), off));
            */

            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in insert"));
                EMSG("E635: null bufp in insert");
                retval = FAIL;
            }
            else if (args != NULL)
            {
                int     ff_detected = EOL_UNKNOWN;
                int     buf_was_empty = (buf->bufp->b_ml.ml_flags & ML_EMPTY);
                size_t  len = 0;
                int     added = 0;
                int     oldFire = netbeansFireChanges;
                int     old_b_changed;
                char_u  *nl;
                linenr_T lnum;
                linenr_T lnum_start;
                pos_T   *pos;

                netbeansFireChanges = 0;

                /* Jump to the buffer where we insert.  After this "curbuf"
                 * can be used. */
                nb_set_curbuf(buf->bufp);
                old_b_changed = curbuf->b_changed;

                /* Convert the specified character offset into a lnum/col
                 * position. */
                pos = off2pos(curbuf, off);
                if (pos != NULL)
                {
                    if (pos->lnum <= 0)
                        lnum_start = 1;
                    else
                        lnum_start = pos->lnum;
                }
                else
                {
                    /* If the given position is not found, assume we want
                     * the end of the file.  See setLocAndSize HACK. */
                    if (buf_was_empty)
                        lnum_start = 1;     /* above empty line */
                    else
                        lnum_start = curbuf->b_ml.ml_line_count + 1;
                }

                /* "lnum" is the line where we insert: either append to it or
                 * insert a new line above it. */
                lnum = lnum_start;

                /* Loop over the "\n" separated lines of the argument. */
                doupdate = 1;
                while (*args != NUL)
                {
                    nl = vim_strchr(args, '\n');
                    if (nl == NULL)
                    {
                        /* Incomplete line, probably truncated.  Next "insert"
                         * command should append to this one. */
                        len = STRLEN(args);
                    }
                    else
                    {
                        len = nl - args;

                        /*
                         * We need to detect EOL style, because the commands
                         * use a character offset.
                         */
                        if (nl > args && nl[-1] == '\r')
                        {
                            ff_detected = EOL_DOS;
                            --len;
                        }
                        else
                            ff_detected = EOL_UNIX;
                    }
                    args[len] = NUL;

                    if (lnum == lnum_start
                            && ((pos != NULL && pos->col > 0)
                                || (lnum == 1 && buf_was_empty)))
                    {
                        char_u *oldline = ml_get(lnum);
                        char_u *newline;

                        /* Insert halfway a line.  For simplicity we assume we
                         * need to append to the line. */
                        newline = alloc_check((unsigned)(STRLEN(oldline) + len + 1));
                        if (newline != NULL)
                        {
                            STRCPY(newline, oldline);
                            STRCAT(newline, args);
                            ml_replace(lnum, newline, FALSE);
                        }
                    }
                    else
                    {
                        /* Append a new line.  Not that we always do this,
                         * also when the text doesn't end in a "\n". */
                        ml_append((linenr_T)(lnum - 1), args, (colnr_T)(len + 1), FALSE);
                        ++added;
                    }

                    if (nl == NULL)
                        break;
                    ++lnum;
                    args = nl + 1;
                }

                /* Adjust the marks below the inserted lines. */
                appended_lines_mark(lnum_start - 1, (long)added);

                /*
                 * When starting with an empty buffer set the fileformat.
                 * This is just guessing...
                 */
                if (buf_was_empty)
                {
                    if (ff_detected == EOL_UNKNOWN)
#if defined(MSDOS) || defined(MSWIN) || defined(OS2)
                        ff_detected = EOL_DOS;
#else
                        ff_detected = EOL_UNIX;
#endif
                    set_fileformat(ff_detected, OPT_LOCAL);
                    curbuf->b_start_ffc = *curbuf->b_p_ff;
                }

                /*
                 * XXX - GRP - Is the next line right? If I've inserted
                 * text the buffer has been updated but not written. Will
                 * netbeans guarantee to write it? Even if I do a :q! ?
                 */
                curbuf->b_changed = old_b_changed; /* logically unchanged */
                netbeansFireChanges = oldFire;

                /* Undo info is invalid now... */
                u_blockfree(curbuf);
                u_clearall(curbuf);
            }
            vim_free(to_free);
            nb_reply_nil(cmdno); /* or !error */
        }
        else
        {
            nbdebug(("UNIMPLEMENTED FUNCTION: %s\n", cmd));
            nb_reply_nil(cmdno);
            retval = FAIL;
        }
    }
    else /* Not a function; no reply required. */
    {
/* =====================================================================*/
        if (streq((char *)cmd, "create"))
        {
            /* Create a buffer without a name. */
            if (buf == NULL)
            {
                EMSG("E636: null buf in create");
                return FAIL;
            }
            vim_free(buf->displayname);
            buf->displayname = NULL;

            netbeansReadFile = 0; /* don't try to open disk file */
            do_ecmd(0, NULL, 0, 0, ECMD_ONE, ECMD_HIDE + ECMD_OLDBUF);
            netbeansReadFile = 1;
            buf->bufp = curbuf;
            maketitle();
            buf->insertDone = FALSE;
            gui_update_menus(0);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "insertDone"))
        {
            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in insertDone"));
            }
            else
            {
                buf->bufp->b_start_eol = *args == 'T';
                buf->insertDone = TRUE;
                args += 2;
                buf->bufp->b_p_ro = *args == 'T';
                print_read_msg(buf);
            }
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "saveDone"))
        {
            long savedChars = atol((char *)args);

            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in saveDone"));
            }
            else
                print_save_msg(buf, savedChars);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "startDocumentListen"))
        {
            if (buf == NULL)
            {
                EMSG("E637: null buf in startDocumentListen");
                return FAIL;
            }
            buf->fireChanges = 1;
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "stopDocumentListen"))
        {
            if (buf == NULL)
            {
                EMSG("E638: null buf in stopDocumentListen");
                return FAIL;
            }
            buf->fireChanges = 0;
            if (buf->bufp != NULL && buf->bufp->b_was_netbeans_file)
            {
                if (!buf->bufp->b_netbeans_file)
                    EMSGN(_("E658: NetBeans connection lost for buffer %ld"),
                                                           buf->bufp->b_fnum);
                else
                {
                    /* NetBeans uses stopDocumentListen when it stops editing
                     * a file.  It then expects the buffer in Vim to
                     * disappear. */
                    do_bufdel(DOBUF_DEL, (char_u *)"", 1,
                                  buf->bufp->b_fnum, buf->bufp->b_fnum, TRUE);
                    vim_memset(buf, 0, sizeof(nbbuf_T));
                }
            }
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setTitle"))
        {
            if (buf == NULL)
            {
                EMSG("E639: null buf in setTitle");
                return FAIL;
            }
            vim_free(buf->displayname);
            buf->displayname = nb_unquote(args, NULL);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "initDone"))
        {
            if (buf == NULL || buf->bufp == NULL)
            {
                EMSG("E640: null buf in initDone");
                return FAIL;
            }
            doupdate = 1;
            buf->initDone = TRUE;
            nb_set_curbuf(buf->bufp);
#if defined(FEAT_AUTOCMD)
            apply_autocmds(EVENT_BUFREADPOST, 0, 0, FALSE, buf->bufp);
#endif

            /* handle any postponed key commands */
            handle_key_queue();
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setBufferNumber")
                || streq((char *)cmd, "putBufferNumber"))
        {
            char_u      *path;
            buf_T       *bufp;

            if (buf == NULL)
            {
                EMSG("E641: null buf in setBufferNumber");
                return FAIL;
            }
            path = (char_u *)nb_unquote(args, NULL);
            if (path == NULL)
                return FAIL;
            bufp = buflist_findname(path);
            vim_free(path);
            if (bufp == NULL)
            {
                EMSG2("E642: File %s not found in setBufferNumber", args);
                return FAIL;
            }
            buf->bufp = bufp;
            buf->nbbuf_number = bufp->b_fnum;

            /* "setBufferNumber" has the side effect of jumping to the buffer
             * (don't know why!).  Don't do that for "putBufferNumber". */
            if (*cmd != 'p')
                coloncmd(":buffer %d", bufp->b_fnum);
            else
            {
                buf->initDone = TRUE;

                /* handle any postponed key commands */
                handle_key_queue();
            }

#if 0  /* never used */
            buf->internalname = (char *)alloc_clear(8);
            sprintf(buf->internalname, "<%d>", bufno);
            buf->netbeansOwns = 0;
#endif
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setFullName"))
        {
            if (buf == NULL)
            {
                EMSG("E643: null buf in setFullName");
                return FAIL;
            }
            vim_free(buf->displayname);
            buf->displayname = nb_unquote(args, NULL);

            netbeansReadFile = 0; /* don't try to open disk file */
            do_ecmd(0, (char_u *)buf->displayname, 0, 0, ECMD_ONE,
                                                     ECMD_HIDE + ECMD_OLDBUF);
            netbeansReadFile = 1;
            buf->bufp = curbuf;
            maketitle();
            gui_update_menus(0);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "editFile"))
        {
            if (buf == NULL)
            {
                EMSG("E644: null buf in editFile");
                return FAIL;
            }
            /* Edit a file: like create + setFullName + read the file. */
            vim_free(buf->displayname);
            buf->displayname = nb_unquote(args, NULL);
            do_ecmd(0, (char_u *)buf->displayname, NULL, NULL, ECMD_ONE,
                                                     ECMD_HIDE + ECMD_OLDBUF);
            buf->bufp = curbuf;
            buf->initDone = TRUE;
            doupdate = 1;
#if defined(FEAT_TITLE)
            maketitle();
#endif
            gui_update_menus(0);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setVisible"))
        {
            if (buf == NULL || buf->bufp == NULL)
            {
/*              EMSG("E645: null bufp in setVisible"); */
                return FAIL;
            }
            if (streq((char *)args, "T") && buf->bufp != curbuf)
            {
                exarg_T exarg;
                exarg.cmd = (char_u *)"goto";
                exarg.forceit = FALSE;
                dosetvisible = TRUE;
                goto_buffer(&exarg, DOBUF_FIRST, FORWARD, buf->bufp->b_fnum);
                doupdate = 1;
                dosetvisible = FALSE;

                /* Side effect!!!. */
                if (!gui.starting)
                    gui_mch_set_foreground();
            }
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "raise"))
        {
            /* Bring gvim to the foreground. */
            if (!gui.starting)
                gui_mch_set_foreground();
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setModified"))
        {
            if (buf == NULL || buf->bufp == NULL)
            {
/*              EMSG("E646: null bufp in setModified"); */
                return FAIL;
            }
            if (streq((char *)args, "T"))
                buf->bufp->b_changed = 1;
            else
            {
                struct stat     st;

                /* Assume NetBeans stored the file.  Reset the timestamp to
                 * avoid "file changed" warnings. */
                if (buf->bufp->b_ffname != NULL
                        && mch_stat((char *)buf->bufp->b_ffname, &st) >= 0)
                    buf_store_time(buf->bufp, &st, buf->bufp->b_ffname);
                buf->bufp->b_changed = 0;
            }
            buf->modified = buf->bufp->b_changed;
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setModtime"))
        {
            if (buf == NULL || buf->bufp == NULL)
                nbdebug(("    null bufp in setModtime"));
            else
                buf->bufp->b_mtime = atoi((char *)args);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setReadOnly"))
        {
            if (buf == NULL || buf->bufp == NULL)
                nbdebug(("    null bufp in setReadOnly"));
            else if (streq((char *)args, "T"))
                buf->bufp->b_p_ro = TRUE;
            else
                buf->bufp->b_p_ro = FALSE;
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setMark"))
        {
            /* not yet */
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "showBalloon"))
        {
#if defined(FEAT_BEVAL)
            static char *text = NULL;

            /*
             * Set up the Balloon Expression Evaluation area.
             * Ignore 'ballooneval' here.
             * The text pointer must remain valid for a while.
             */
            if (balloonEval != NULL)
            {
                vim_free(text);
                text = nb_unquote(args, NULL);
                if (text != NULL)
                    gui_mch_post_balloon(balloonEval, (char_u *)text);
            }
#endif
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setDot"))
        {
            pos_T *pos;
#ifdef NBDEBUG
            char_u *s;
#endif

            if (buf == NULL || buf->bufp == NULL)
            {
                EMSG("E647: null bufp in setDot");
                return FAIL;
            }

            nb_set_curbuf(buf->bufp);

#ifdef FEAT_VISUAL
            /* Don't want Visual mode now. */
            if (VIsual_active)
                end_visual_mode();
#endif
#ifdef NBDEBUG
            s = args;
#endif
            pos = get_off_or_lnum(buf->bufp, &args);
            if (pos)
            {
                curwin->w_cursor = *pos;
                check_cursor();
#ifdef FEAT_FOLDING
                foldOpenCursor();
#endif
            }
            else
                nbdebug(("    BAD POSITION in setDot: %s\n", s));

            /* gui_update_cursor(TRUE, FALSE); */
            /* update_curbuf(NOT_VALID); */
            update_topline();           /* scroll to show the line */
            update_screen(VALID);
            setcursor();
            out_flush();
            gui_update_cursor(TRUE, FALSE);
            gui_mch_flush();
            /* Quit a hit-return or more prompt. */
            if (State == HITRETURN || State == ASKMORE)
            {
#ifdef FEAT_GUI_GTK
                if (gtk_main_level() > 0)
                    gtk_main_quit();
#endif
            }
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "close"))
        {
#ifdef NBDEBUG
            char *name = "<NONE>";
#endif

            if (buf == NULL)
            {
                EMSG("E648: null buf in close");
                return FAIL;
            }

#ifdef NBDEBUG
            if (buf->displayname != NULL)
                name = buf->displayname;
#endif
/*          if (buf->bufp == NULL) */
/*              EMSG("E649: null bufp in close"); */
            nbdebug(("    CLOSE %d: %s\n", bufno, name));
            need_mouse_correct = TRUE;
            if (buf->bufp != NULL)
                do_buffer(DOBUF_WIPE, DOBUF_FIRST, FORWARD,
                                                     buf->bufp->b_fnum, TRUE);
            buf->bufp = NULL;
            buf->initDone = FALSE;
            doupdate = 1;
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setStyle")) /* obsolete... */
        {
            nbdebug(("    setStyle is obsolete!"));
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "setExitDelay"))
        {
            /* Only used in version 2.1. */
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "defineAnnoType"))
        {
#ifdef FEAT_SIGNS
            int typeNum;
            char_u *typeName;
            char_u *tooltip;
            char_u *p;
            char_u *glyphFile;
            int use_fg = 0;
            int use_bg = 0;
            int fg = -1;
            int bg = -1;

            if (buf == NULL)
            {
                EMSG("E650: null buf in defineAnnoType");
                return FAIL;
            }

            cp = (char *)args;
            typeNum = strtol(cp, &cp, 10);
            args = (char_u *)cp;
            args = skipwhite(args);
            typeName = (char_u *)nb_unquote(args, &args);
            args = skipwhite(args + 1);
            tooltip = (char_u *)nb_unquote(args, &args);
            args = skipwhite(args + 1);

            p = (char_u *)nb_unquote(args, &args);
            glyphFile = vim_strsave_escaped(p, escape_chars);
            vim_free(p);

            args = skipwhite(args + 1);
            if (STRNCMP(args, "none", 4) == 0)
                args += 5;
            else
            {
                use_fg = 1;
                cp = (char *)args;
                fg = strtol(cp, &cp, 10);
                args = (char_u *)cp;
            }
            if (STRNCMP(args, "none", 4) == 0)
                args += 5;
            else
            {
                use_bg = 1;
                cp = (char *)args;
                bg = strtol(cp, &cp, 10);
                args = (char_u *)cp;
            }
            if (typeName != NULL && tooltip != NULL && glyphFile != NULL)
                addsigntype(buf, typeNum, typeName, tooltip, glyphFile,
                                                      use_fg, fg, use_bg, bg);
            else
                vim_free(typeName);

            /* don't free typeName; it's used directly in addsigntype() */
            vim_free(tooltip);
            vim_free(glyphFile);

#endif
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "addAnno"))
        {
#ifdef FEAT_SIGNS
            int serNum;
            int localTypeNum;
            int typeNum;
# ifdef NBDEBUG
            int len;
# endif
            pos_T *pos;

            if (buf == NULL || buf->bufp == NULL)
            {
                EMSG("E651: null bufp in addAnno");
                return FAIL;
            }

            doupdate = 1;

            cp = (char *)args;
            serNum = strtol(cp, &cp, 10);

            /* Get the typenr specific for this buffer and convert it to
             * the global typenumber, as used for the sign name. */
            localTypeNum = strtol(cp, &cp, 10);
            args = (char_u *)cp;
            typeNum = mapsigntype(buf, localTypeNum);

            pos = get_off_or_lnum(buf->bufp, &args);

            cp = (char *)args;
# ifdef NBDEBUG
            len =
# endif
                strtol(cp, &cp, 10);
            args = (char_u *)cp;
# ifdef NBDEBUG
            if (len != -1)
            {
                nbdebug(("    partial line annotation -- Not Yet Implemented!"));
            }
# endif
            if (serNum >= GUARDEDOFFSET)
            {
                nbdebug(("    too many annotations! ignoring..."));
                return FAIL;
            }
            if (pos)
            {
                coloncmd(":sign place %d line=%d name=%d buffer=%d",
                           serNum, pos->lnum, typeNum, buf->bufp->b_fnum);
                if (typeNum == curPCtype)
                    coloncmd(":sign jump %d buffer=%d", serNum,
                                                       buf->bufp->b_fnum);
            }
#endif
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "removeAnno"))
        {
#ifdef FEAT_SIGNS
            int serNum;

            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in removeAnno"));
                return FAIL;
            }
            doupdate = 1;
            cp = (char *)args;
            serNum = strtol(cp, &cp, 10);
            args = (char_u *)cp;
            coloncmd(":sign unplace %d buffer=%d",
                     serNum, buf->bufp->b_fnum);
            redraw_buf_later(buf->bufp, NOT_VALID);
#endif
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "moveAnnoToFront"))
        {
#ifdef FEAT_SIGNS
            nbdebug(("    moveAnnoToFront: Not Yet Implemented!"));
#endif
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "guard") || streq((char *)cmd, "unguard"))
        {
            int len;
            pos_T first;
            pos_T last;
            pos_T *pos;
            int un = (cmd[0] == 'u');
            static int guardId = GUARDEDOFFSET;

            if (skip >= SKIP_STOP)
            {
                nbdebug(("    Skipping %s command\n", (char *) cmd));
                return OK;
            }

            nb_init_graphics();

            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in %s command", cmd));
                return FAIL;
            }
            nb_set_curbuf(buf->bufp);
            cp = (char *)args;
            off = strtol(cp, &cp, 10);
            len = strtol(cp, NULL, 10);
            args = (char_u *)cp;
            pos = off2pos(buf->bufp, off);
            doupdate = 1;
            if (!pos)
                nbdebug(("    no such start pos in %s, %ld\n", cmd, off));
            else
            {
                first = *pos;
                pos = off2pos(buf->bufp, off + len - 1);
                if (pos != NULL && pos->col == 0)
                {
                        /*
                         * In Java Swing the offset is a position between 2
                         * characters. If col == 0 then we really want the
                         * previous line as the end.
                         */
                        pos = off2pos(buf->bufp, off + len - 2);
                }
                if (!pos)
                    nbdebug(("    no such end pos in %s, %ld\n",
                            cmd, off + len - 1));
                else
                {
                    long lnum;
                    last = *pos;
                    /* set highlight for region */
                    nbdebug(("    %sGUARD %ld,%d to %ld,%d\n", (un) ? "UN" : "",
                             first.lnum, first.col,
                             last.lnum, last.col));
#ifdef FEAT_SIGNS
                    for (lnum = first.lnum; lnum <= last.lnum; lnum++)
                    {
                        if (un)
                        {
                            /* never used */
                        }
                        else
                        {
                            if (buf_findsigntype_id(buf->bufp, lnum,
                                GUARDED) == 0)
                            {
                                coloncmd(
                                    ":sign place %d line=%d name=%d buffer=%d",
                                     guardId++, lnum, GUARDED,
                                     buf->bufp->b_fnum);
                            }
                        }
                    }
#endif
                    redraw_buf_later(buf->bufp, NOT_VALID);
                }
            }
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "startAtomic"))
        {
            inAtomic = 1;
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "endAtomic"))
        {
            inAtomic = 0;
            if (needupdate)
            {
                doupdate = 1;
                needupdate = 0;
            }
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "save"))
        {
            /*
             * NOTE - This command is obsolete wrt NetBeans. Its left in
             * only for historical reasons.
             */
            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in %s command", cmd));
                return FAIL;
            }

            /* the following is taken from ex_cmds.c (do_wqall function) */
            if (bufIsChanged(buf->bufp))
            {
                /* Only write if the buffer can be written. */
                if (p_write
                        && !buf->bufp->b_p_ro
                        && buf->bufp->b_ffname != NULL
#ifdef FEAT_QUICKFIX
                        && !bt_dontwrite(buf->bufp)
#endif
                        )
                {
                    buf_write_all(buf->bufp, FALSE);
#ifdef FEAT_AUTOCMD
                    /* an autocommand may have deleted the buffer */
                    if (!buf_valid(buf->bufp))
                        buf->bufp = NULL;
#endif
                }
            }
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "netbeansBuffer"))
        {
            if (buf == NULL || buf->bufp == NULL)
            {
                nbdebug(("    null bufp in %s command", cmd));
                return FAIL;
            }
            if (*args == 'T')
            {
                buf->bufp->b_netbeans_file = TRUE;
                buf->bufp->b_was_netbeans_file = TRUE;
            }
            else
                buf->bufp->b_netbeans_file = FALSE;
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "specialKeys"))
        {
            special_keys(args);
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "actionMenuItem"))
        {
            /* not used yet */
/* =====================================================================*/
        }
        else if (streq((char *)cmd, "version"))
        {
            /* not used yet */
        }
        /*
         * Unrecognized command is ignored.
         */
    }
    if (inAtomic && doupdate)
    {
        needupdate = 1;
        doupdate = 0;
    }

    /*
     * Is this needed? I moved the netbeans_Xt_connect() later during startup
     * and it may no longer be necessary. If its not needed then needupdate
     * and doupdate can also be removed.
     */
    if (buf != NULL && buf->initDone && doupdate)
    {
        update_screen(NOT_VALID);
        setcursor();
        out_flush();
        gui_update_cursor(TRUE, FALSE);
        gui_mch_flush();
        /* Quit a hit-return or more prompt. */
        if (State == HITRETURN || State == ASKMORE)
        {
#ifdef FEAT_GUI_GTK
            if (gtk_main_level() > 0)
                gtk_main_quit();
#endif
        }
    }

    return retval;
}


/*
 * If "buf" is not the current buffer try changing to a window that edits this
 * buffer.  If there is no such window then close the current buffer and set
 * the current buffer as "buf".
 */
    static void
nb_set_curbuf(buf)
    buf_T *buf;
{
    if (curbuf != buf && buf_jump_open_win(buf) == NULL)
        set_curbuf(buf, DOBUF_GOTO);
}

/*
 * Process a vim colon command.
 */
    static void
coloncmd(char *cmd, ...)
{
    char buf[1024];
    va_list ap;

    va_start(ap, cmd);
    vsprintf(buf, cmd, ap);
    va_end(ap);

    nbdebug(("    COLONCMD %s\n", buf));

/*     ALT_INPUT_LOCK_ON; */
    do_cmdline((char_u *)buf, NULL, NULL, DOCMD_NOWAIT | DOCMD_KEYTYPED);
/*     ALT_INPUT_LOCK_OFF; */

    setcursor();                /* restore the cursor position */
    out_flush();                /* make sure output has been written */

    gui_update_cursor(TRUE, FALSE);
    gui_mch_flush();
}


/*
 * Parse the specialKeys argument and issue the appropriate map commands.
 */
    static void
special_keys(char_u *args)
{
    char *save_str = nb_unquote(args, NULL);
    char *tok = strtok(save_str, " ");
    char *sep;
    char keybuf[64];
    char cmdbuf[256];

    while (tok != NULL)
    {
        int i = 0;

        if ((sep = strchr(tok, '-')) != NULL)
        {
            *sep = NUL;
            while (*tok)
            {
                switch (*tok)
                {
                    case 'A':
                    case 'M':
                    case 'C':
                    case 'S':
                        keybuf[i++] = *tok;
                        keybuf[i++] = '-';
                        break;
                }
                tok++;
            }
            tok++;
        }

        strcpy(&keybuf[i], tok);
        vim_snprintf(cmdbuf, sizeof(cmdbuf),
                                "<silent><%s> :nbkey %s<CR>", keybuf, keybuf);
        do_map(0, (char_u *)cmdbuf, NORMAL, FALSE);
        tok = strtok(NULL, " ");
    }
    vim_free(save_str);
}


    void
ex_nbkey(eap)
    exarg_T     *eap;
{
    netbeans_keystring(0, (char *)eap->arg);
}


/*
 * Initialize highlights and signs for use by netbeans  (mostly obsolete)
 */
    static void
nb_init_graphics(void)
{
    static int did_init = FALSE;

    if (!did_init)
    {
        coloncmd(":highlight NBGuarded guibg=Cyan guifg=Black");
        coloncmd(":sign define %d linehl=NBGuarded", GUARDED);

        did_init = TRUE;
    }
}

/*
 * Convert key to netbeans name.
 */
    static void
netbeans_keyname(int key, char *buf)
{
    char *name = 0;
    char namebuf[2];
    int ctrl  = 0;
    int shift = 0;
    int alt   = 0;

    if (mod_mask & MOD_MASK_CTRL)
        ctrl = 1;
    if (mod_mask & MOD_MASK_SHIFT)
        shift = 1;
    if (mod_mask & MOD_MASK_ALT)
        alt = 1;


    switch (key)
    {
        case K_F1:              name = "F1";            break;
        case K_S_F1:    name = "F1";    shift = 1;      break;
        case K_F2:              name = "F2";            break;
        case K_S_F2:    name = "F2";    shift = 1;      break;
        case K_F3:              name = "F3";            break;
        case K_S_F3:    name = "F3";    shift = 1;      break;
        case K_F4:              name = "F4";            break;
        case K_S_F4:    name = "F4";    shift = 1;      break;
        case K_F5:              name = "F5";            break;
        case K_S_F5:    name = "F5";    shift = 1;      break;
        case K_F6:              name = "F6";            break;
        case K_S_F6:    name = "F6";    shift = 1;      break;
        case K_F7:              name = "F7";            break;
        case K_S_F7:    name = "F7";    shift = 1;      break;
        case K_F8:              name = "F8";            break;
        case K_S_F8:    name = "F8";    shift = 1;      break;
        case K_F9:              name = "F9";            break;
        case K_S_F9:    name = "F9";    shift = 1;      break;
        case K_F10:             name = "F10";           break;
        case K_S_F10:   name = "F10";   shift = 1;      break;
        case K_F11:             name = "F11";           break;
        case K_S_F11:   name = "F11";   shift = 1;      break;
        case K_F12:             name = "F12";           break;
        case K_S_F12:   name = "F12";   shift = 1;      break;
        default:
                        if (key >= ' ' && key <= '~')
                        {
                            /* Allow ASCII characters. */
                            name = namebuf;
                            namebuf[0] = key;
                            namebuf[1] = NUL;
                        }
                        else
                            name = "X";
                        break;
    }

    buf[0] = '\0';
    if (ctrl)
        strcat(buf, "C");
    if (shift)
        strcat(buf, "S");
    if (alt)
        strcat(buf, "M"); /* META */
    if (ctrl || shift || alt)
        strcat(buf, "-");
    strcat(buf, name);
}

#ifdef FEAT_BEVAL
/*
 * Function to be called for balloon evaluation.  Grabs the text under the
 * cursor and sends it to the debugger for evaluation.  The debugger should
 * respond with a showBalloon command when there is a useful result.
 */
/*ARGSUSED*/
    void
netbeans_beval_cb(
        BalloonEval     *beval,
        int              state)
{
    win_T       *wp;
    char_u      *text;
    linenr_T    lnum;
    int         col;
    char        buf[MAXPATHL * 2 + 25];
    char_u      *p;

    /* Don't do anything when 'ballooneval' is off, messages scrolled the
     * windows up or we have no connection. */
    if (!p_beval || msg_scrolled > 0 || !haveConnection)
        return;

    if (get_beval_info(beval, TRUE, &wp, &lnum, &text, &col) == OK)
    {
        /* Send debugger request.  Only when the text is of reasonable
         * length. */
        if (text != NULL && text[0] != NUL && STRLEN(text) < MAXPATHL)
        {
            p = nb_quote(text);
            if (p != NULL)
            {
                vim_snprintf(buf, sizeof(buf),
                                       "0:balloonText=%d \"%s\"\n", r_cmdno, p);
                vim_free(p);
            }
            nbdebug(("EVT: %s", buf));
            nb_send(buf, "netbeans_beval_cb");
        }
        vim_free(text);
    }
}
#endif

/*
 * Tell netbeans that the window was opened, ready for commands.
 */
    void
netbeans_startup_done(void)
{
    char *cmd = "0:startupDone=0\n";

    if (usingNetbeans)
#ifdef FEAT_GUI_MOTIF
        netbeans_Xt_connect(app_context);
#else
# ifdef FEAT_GUI_GTK
        netbeans_gtk_connect();
# else
#  ifdef FEAT_GUI_W32
        netbeans_w32_connect();
#  endif
# endif
#endif

    if (!haveConnection)
        return;

#ifdef FEAT_BEVAL
    bevalServers |= BEVAL_NETBEANS;
#endif

    nbdebug(("EVT: %s", cmd));
    nb_send(cmd, "netbeans_startup_done");
}

/*
 * Tell netbeans that we're exiting. This should be called right
 * before calling exit.
 */
    void
netbeans_send_disconnect()
{
    char buf[128];

    if (haveConnection)
    {
        sprintf(buf, "0:disconnect=%d\n", r_cmdno);
        nbdebug(("EVT: %s", buf));
        nb_send(buf, "netbeans_disconnect");
    }
}

#if defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_W32) || defined(PROTO)
/*
 * Tell netbeans that the window was moved or resized.
 */
    void
netbeans_frame_moved(int new_x, int new_y)
{
    char buf[128];

    if (!haveConnection)
        return;

    sprintf(buf, "0:geometry=%d %d %d %d %d\n",
                    r_cmdno, (int)Columns, (int)Rows, new_x, new_y);
    /*nbdebug(("EVT: %s", buf)); happens too many times during a move */
    nb_send(buf, "netbeans_frame_moved");
}
#endif

/*
 * Tell netbeans the user opened or activated a file.
 */
    void
netbeans_file_activated(buf_T *bufp)
{
    int bufno = nb_getbufno(bufp);
    nbbuf_T *bp = nb_get_buf(bufno);
    char    buffer[2*MAXPATHL];
    char_u  *q;

    if (!haveConnection || dosetvisible)
        return;

    q = nb_quote(bufp->b_ffname);
    if (q == NULL || bp == NULL)
        return;

    vim_snprintf(buffer, sizeof(buffer),  "%d:fileOpened=%d \"%s\" %s %s\n",
            bufno,
            bufno,
            (char *)q,
            "T",  /* open in NetBeans */
            "F"); /* modified */

    vim_free(q);
    nbdebug(("EVT: %s", buffer));

    nb_send(buffer, "netbeans_file_opened");
}

/*
 * Tell netbeans the user opened a file.
 */
    void
netbeans_file_opened(buf_T *bufp)
{
    int bufno = nb_getbufno(bufp);
    char    buffer[2*MAXPATHL];
    char_u  *q;
    nbbuf_T *bp = nb_get_buf(nb_getbufno(bufp));
    int     bnum;

    if (!haveConnection)
        return;

    q = nb_quote(bufp->b_ffname);
    if (q == NULL)
        return;
    if (bp != NULL)
        bnum = bufno;
    else
        bnum = 0;

    vim_snprintf(buffer, sizeof(buffer), "%d:fileOpened=%d \"%s\" %s %s\n",
            bnum,
            0,
            (char *)q,
            "T",  /* open in NetBeans */
            "F"); /* modified */

    vim_free(q);
    nbdebug(("EVT: %s", buffer));

    nb_send(buffer, "netbeans_file_opened");
    if (p_acd && vim_chdirfile(bufp->b_ffname) == OK)
        shorten_fnames(TRUE);
}

/*
 * Tell netbeans a file was closed.
 */
    void
netbeans_file_closed(buf_T *bufp)
{
    int         bufno = nb_getbufno(bufp);
    nbbuf_T     *nbbuf = nb_get_buf(bufno);
    char        buffer[2*MAXPATHL];

    if (!haveConnection || bufno < 0)
        return;

    if (!netbeansCloseFile)
    {
        nbdebug(("Ignoring file_closed for %s. File was closed from IDE\n",
                    bufp->b_ffname));
        return;
    }

    nbdebug(("netbeans_file_closed:\n"));
    nbdebug(("    Closing bufno: %d", bufno));
    if (curbuf != NULL && curbuf != bufp)
    {
        nbdebug(("    Curbuf bufno:  %d\n", nb_getbufno(curbuf)));
    }
    else if (curbuf == bufp)
    {
        nbdebug(("    curbuf == bufp\n"));
    }

    if (bufno <= 0)
        return;

    sprintf(buffer, "%d:killed=%d\n", bufno, r_cmdno);

    nbdebug(("EVT: %s", buffer));

    nb_send(buffer, "netbeans_file_closed");

    if (nbbuf != NULL)
        nbbuf->bufp = NULL;
}

/*
 * Get a pointer to the Netbeans buffer for Vim buffer "bufp".
 * Return NULL if there is no such buffer or changes are not to be reported.
 * Otherwise store the buffer number in "*bufnop".
 */
    static nbbuf_T *
nb_bufp2nbbuf_fire(buf_T *bufp, int *bufnop)
{
    int         bufno;
    nbbuf_T     *nbbuf;

    if (!haveConnection || !netbeansFireChanges)
        return NULL;            /* changes are not reported at all */

    bufno = nb_getbufno(bufp);
    if (bufno <= 0)
        return NULL;            /* file is not known to NetBeans */

    nbbuf = nb_get_buf(bufno);
    if (nbbuf != NULL && !nbbuf->fireChanges)
        return NULL;            /* changes in this buffer are not reported */

    *bufnop = bufno;
    return nbbuf;
}

/*
 * Tell netbeans the user inserted some text.
 */
    void
netbeans_inserted(
    buf_T       *bufp,
    linenr_T    linenr,
    colnr_T     col,
    char_u      *txt,
    int         newlen)
{
    char_u      *buf;
    int         bufno;
    nbbuf_T     *nbbuf;
    pos_T       pos;
    long        off;
    char_u      *p;
    char_u      *newtxt;

    nbbuf = nb_bufp2nbbuf_fire(bufp, &bufno);
    if (nbbuf == NULL)
        return;

    /* Don't mark as modified for initial read */
    if (nbbuf->insertDone)
        nbbuf->modified = 1;

    pos.lnum = linenr;
    pos.col = col;
    off = pos2off(bufp, &pos);

    /* send the "insert" EVT */
    newtxt = alloc(newlen + 1);
    vim_strncpy(newtxt, txt, newlen);
    p = nb_quote(newtxt);
    if (p != NULL)
    {
        buf = alloc(128 + 2*newlen);
        sprintf((char *)buf, "%d:insert=%d %ld \"%s\"\n",
                                                      bufno, r_cmdno, off, p);
        nbdebug(("EVT: %s", buf));
        nb_send((char *)buf, "netbeans_inserted");
        vim_free(p);
        vim_free(buf);
    }
    vim_free(newtxt);
}

/*
 * Tell netbeans some bytes have been removed.
 */
    void
netbeans_removed(
    buf_T       *bufp,
    linenr_T    linenr,
    colnr_T     col,
    long        len)
{
    char_u      buf[128];
    int         bufno;
    nbbuf_T     *nbbuf;
    pos_T       pos;
    long        off;

    nbbuf = nb_bufp2nbbuf_fire(bufp, &bufno);
    if (nbbuf == NULL)
        return;

    if (len < 0)
    {
        nbdebug(("Negative len %ld in netbeans_removed()!", len));
        return;
    }

    nbbuf->modified = 1;

    pos.lnum = linenr;
    pos.col = col;

    off = pos2off(bufp, &pos);

    sprintf((char *)buf, "%d:remove=%d %ld %ld\n", bufno, r_cmdno, off, len);
    nbdebug(("EVT: %s", buf));
    nb_send((char *)buf, "netbeans_removed");
}

/*
 * Send netbeans an unmodufied command.
 */
/*ARGSUSED*/
    void
netbeans_unmodified(buf_T *bufp)
{
#if 0
    char_u      buf[128];
    int         bufno;
    nbbuf_T     *nbbuf;

    /* This has been disabled, because NetBeans considers a buffer modified
     * even when all changes have been undone. */
    nbbuf = nb_bufp2nbbuf_fire(bufp, &bufno);
    if (nbbuf == NULL)
        return;

    nbbuf->modified = 0;

    sprintf((char *)buf, "%d:unmodified=%d\n", bufno, r_cmdno);
    nbdebug(("EVT: %s", buf));
    nb_send((char *)buf, "netbeans_unmodified");
#endif
}

/*
 * Send a button release event back to netbeans. Its up to netbeans
 * to decide what to do (if anything) with this event.
 */
    void
netbeans_button_release(int button)
{
    char        buf[128];
    int         bufno;

    bufno = nb_getbufno(curbuf);

    if (bufno >= 0 && curwin != NULL && curwin->w_buffer == curbuf)
    {
        int col = mouse_col - W_WINCOL(curwin) - (curwin->w_p_nu ? 9 : 1);
        long off = pos2off(curbuf, &curwin->w_cursor);

        /* sync the cursor position */
        sprintf(buf, "%d:newDotAndMark=%d %ld %ld\n", bufno, r_cmdno, off, off);
        nbdebug(("EVT: %s", buf));
        nb_send(buf, "netbeans_button_release[newDotAndMark]");

        sprintf(buf, "%d:buttonRelease=%d %d %ld %d\n", bufno, r_cmdno,
                                    button, (long)curwin->w_cursor.lnum, col);
        nbdebug(("EVT: %s", buf));
        nb_send(buf, "netbeans_button_release");
    }
}


/*
 * Send a keypress event back to netbeans. This usually simulates some
 * kind of function key press. This function operates on a key code.
 */
    void
netbeans_keycommand(int key)
{
    char        keyName[60];

    netbeans_keyname(key, keyName);
    netbeans_keystring(key, keyName);
}


/*
 * Send a keypress event back to netbeans. This usually simulates some
 * kind of function key press. This function operates on a key string.
 */
    static void
netbeans_keystring(int key, char *keyName)
{
    char        buf[2*MAXPATHL];
    int         bufno = nb_getbufno(curbuf);
    long        off;
    char_u      *q;

    if (!haveConnection)
        return;


    if (bufno == -1)
    {
        nbdebug(("got keycommand for non-NetBeans buffer, opening...\n"));
        q = curbuf->b_ffname == NULL ? (char_u *)""
                                                 : nb_quote(curbuf->b_ffname);
        if (q == NULL)
            return;
        vim_snprintf(buf, sizeof(buf), "0:fileOpened=%d \"%s\" %s %s\n", 0,
                q,
                "T",  /* open in NetBeans */
                "F"); /* modified */
        if (curbuf->b_ffname != NULL)
            vim_free(q);
        nbdebug(("EVT: %s", buf));
        nb_send(buf, "netbeans_keycommand");

        if (key > 0)
            postpone_keycommand(key);
        return;
    }

    /* sync the cursor position */
    off = pos2off(curbuf, &curwin->w_cursor);
    sprintf(buf, "%d:newDotAndMark=%d %ld %ld\n", bufno, r_cmdno, off, off);
    nbdebug(("EVT: %s", buf));
    nb_send(buf, "netbeans_keycommand");

    /* To work on Win32 you must apply patch to ExtEditor module
     * from ExtEdCaret.java.diff - make EVT_newDotAndMark handler
     * more synchronous
     */

    /* now send keyCommand event */
    vim_snprintf(buf, sizeof(buf), "%d:keyCommand=%d \"%s\"\n",
                                                     bufno, r_cmdno, keyName);
    nbdebug(("EVT: %s", buf));
    nb_send(buf, "netbeans_keycommand");

    /* New: do both at once and include the lnum/col. */
    vim_snprintf(buf, sizeof(buf), "%d:keyAtPos=%d \"%s\" %ld %ld/%ld\n",
            bufno, r_cmdno, keyName,
                off, (long)curwin->w_cursor.lnum, (long)curwin->w_cursor.col);
    nbdebug(("EVT: %s", buf));
    nb_send(buf, "netbeans_keycommand");
}


/*
 * Send a save event to netbeans.
 */
    void
netbeans_save_buffer(buf_T *bufp)
{
    char_u      buf[64];
    int         bufno;
    nbbuf_T     *nbbuf;

    nbbuf = nb_bufp2nbbuf_fire(bufp, &bufno);
    if (nbbuf == NULL)
        return;

    nbbuf->modified = 0;

    sprintf((char *)buf, "%d:save=%d\n", bufno, r_cmdno);
    nbdebug(("EVT: %s", buf));
    nb_send((char *)buf, "netbeans_save_buffer");
}


/*
 * Send remove command to netbeans (this command has been turned off).
 */
    void
netbeans_deleted_all_lines(buf_T *bufp)
{
    char_u      buf[64];
    int         bufno;
    nbbuf_T     *nbbuf;

    nbbuf = nb_bufp2nbbuf_fire(bufp, &bufno);
    if (nbbuf == NULL)
        return;

    /* Don't mark as modified for initial read */
    if (nbbuf->insertDone)
        nbbuf->modified = 1;

    sprintf((char *)buf, "%d:remove=%d 0 -1\n", bufno, r_cmdno);
    nbdebug(("EVT(suppressed): %s", buf));
/*     nb_send(buf, "netbeans_deleted_all_lines"); */
}


/*
 * See if the lines are guarded. The top and bot parameters are from
 * u_savecommon(), these are the line above the change and the line below the
 * change.
 */
    int
netbeans_is_guarded(linenr_T top, linenr_T bot)
{
    signlist_T  *p;
    int         lnum;

    for (p = curbuf->b_signlist; p != NULL; p = p->next)
        if (p->id >= GUARDEDOFFSET)
            for (lnum = top + 1; lnum < bot; lnum++)
                if (lnum == p->lnum)
                    return TRUE;

    return FALSE;
}

#if defined(FEAT_GUI_MOTIF) || defined(PROTO)
/*
 * We have multiple signs to draw at the same location. Draw the
 * multi-sign indicator instead. This is the Motif version.
 */
    void
netbeans_draw_multisign_indicator(int row)
{
    int i;
    int y;
    int x;

    x = 0;
    y = row * gui.char_height + 2;

    for (i = 0; i < gui.char_height - 3; i++)
        XDrawPoint(gui.dpy, gui.wid, gui.text_gc, x+2, y++);

    XDrawPoint(gui.dpy, gui.wid, gui.text_gc, x+0, y);
    XDrawPoint(gui.dpy, gui.wid, gui.text_gc, x+2, y);
    XDrawPoint(gui.dpy, gui.wid, gui.text_gc, x+4, y++);
    XDrawPoint(gui.dpy, gui.wid, gui.text_gc, x+1, y);
    XDrawPoint(gui.dpy, gui.wid, gui.text_gc, x+2, y);
    XDrawPoint(gui.dpy, gui.wid, gui.text_gc, x+3, y++);
    XDrawPoint(gui.dpy, gui.wid, gui.text_gc, x+2, y);
}
#endif /* FEAT_GUI_MOTIF */

#ifdef FEAT_GUI_GTK
/*
 * We have multiple signs to draw at the same location. Draw the
 * multi-sign indicator instead. This is the GTK/Gnome version.
 */
    void
netbeans_draw_multisign_indicator(int row)
{
    int i;
    int y;
    int x;
    GdkDrawable *drawable = gui.drawarea->window;

    x = 0;
    y = row * gui.char_height + 2;

    for (i = 0; i < gui.char_height - 3; i++)
        gdk_draw_point(drawable, gui.text_gc, x+2, y++);

    gdk_draw_point(drawable, gui.text_gc, x+0, y);
    gdk_draw_point(drawable, gui.text_gc, x+2, y);
    gdk_draw_point(drawable, gui.text_gc, x+4, y++);
    gdk_draw_point(drawable, gui.text_gc, x+1, y);
    gdk_draw_point(drawable, gui.text_gc, x+2, y);
    gdk_draw_point(drawable, gui.text_gc, x+3, y++);
    gdk_draw_point(drawable, gui.text_gc, x+2, y);
}
#endif /* FEAT_GUI_GTK */

/*
 * If the mouse is clicked in the gutter of a line with multiple
 * annotations, cycle through the set of signs.
 */
    void
netbeans_gutter_click(linenr_T lnum)
{
    signlist_T  *p;

    for (p = curbuf->b_signlist; p != NULL; p = p->next)
    {
        if (p->lnum == lnum && p->next && p->next->lnum == lnum)
        {
            signlist_T *tail;

            /* remove "p" from list, reinsert it at the tail of the sublist */
            if (p->prev)
                p->prev->next = p->next;
            else
                curbuf->b_signlist = p->next;
            p->next->prev = p->prev;
            /* now find end of sublist and insert p */
            for (tail = p->next;
                  tail->next && tail->next->lnum == lnum
                                            && tail->next->id < GUARDEDOFFSET;
                  tail = tail->next)
                ;
            /* tail now points to last entry with same lnum (except
             * that "guarded" annotations are always last) */
            p->next = tail->next;
            if (tail->next)
                tail->next->prev = p;
            p->prev = tail;
            tail->next = p;
            update_debug_sign(curbuf, lnum);
            break;
        }
    }
}


/*
 * Add a sign of the reqested type at the requested location.
 *
 * Reverse engineering:
 * Apparently an annotation is defined the first time it is used in a buffer.
 * When the same annotation is used in two buffers, the second time we do not
 * need to define a new sign name but reuse the existing one.  But since the
 * ID number used in the second buffer starts counting at one again, a mapping
 * is made from the ID specifically for the buffer to the global sign name
 * (which is a number).
 *
 * globalsignmap[]      stores the signs that have been defined globally.
 * buf->signmapused[]   maps buffer-local annotation IDs to an index in
 *                      globalsignmap[].
 */
/*ARGSUSED*/
    static void
addsigntype(
    nbbuf_T     *buf,
    int         typeNum,
    char_u      *typeName,
    char_u      *tooltip,
    char_u      *glyphFile,
    int         use_fg,
    int         fg,
    int         use_bg,
    int         bg)
{
    char fgbuf[32];
    char bgbuf[32];
    int i, j;

    for (i = 0; i < globalsignmapused; i++)
        if (STRCMP(typeName, globalsignmap[i]) == 0)
            break;

    if (i == globalsignmapused) /* not found; add it to global map */
    {
        nbdebug(("DEFINEANNOTYPE(%d,%s,%s,%s,%d,%d)\n",
                            typeNum, typeName, tooltip, glyphFile, fg, bg));
        if (use_fg || use_bg)
        {
            sprintf(fgbuf, "guifg=#%06x", fg & 0xFFFFFF);
            sprintf(bgbuf, "guibg=#%06x", bg & 0xFFFFFF);

            coloncmd(":highlight NB_%s %s %s", typeName, (use_fg) ? fgbuf : "",
                     (use_bg) ? bgbuf : "");
            if (*glyphFile == NUL)
                /* no glyph, line highlighting only */
                coloncmd(":sign define %d linehl=NB_%s", i + 1, typeName);
            else if (vim_strsize(glyphFile) <= 2)
                /* one- or two-character glyph name, use as text glyph with
                 * texthl */
                coloncmd(":sign define %d text=%s texthl=NB_%s", i + 1,
                                                         glyphFile, typeName);
            else
                /* glyph, line highlighting */
                coloncmd(":sign define %d icon=%s linehl=NB_%s", i + 1,
                                                         glyphFile, typeName);
        }
        else
            /* glyph, no line highlighting */
            coloncmd(":sign define %d icon=%s", i + 1, glyphFile);

        if (STRCMP(typeName,"CurrentPC") == 0)
            curPCtype = typeNum;

        if (globalsignmapused == globalsignmaplen)
        {
            if (globalsignmaplen == 0) /* first allocation */
            {
                globalsignmaplen = 20;
                globalsignmap = (char **)alloc_clear(globalsignmaplen*sizeof(char *));
            }
            else    /* grow it */
            {
                int incr;
                int oldlen = globalsignmaplen;

                globalsignmaplen *= 2;
                incr = globalsignmaplen - oldlen;
                globalsignmap = (char **)vim_realloc(globalsignmap,
                                           globalsignmaplen * sizeof(char *));
                memset(globalsignmap + oldlen, 0, incr * sizeof(char *));
            }
        }

        globalsignmap[i] = (char *)typeName;
        globalsignmapused = i + 1;
    }

    /* check local map; should *not* be found! */
    for (j = 0; j < buf->signmapused; j++)
        if (buf->signmap[j] == i + 1)
            return;

    /* add to local map */
    if (buf->signmapused == buf->signmaplen)
    {
        if (buf->signmaplen == 0) /* first allocation */
        {
            buf->signmaplen = 5;
            buf->signmap = (int *)alloc_clear(buf->signmaplen * sizeof(int *));
        }
        else    /* grow it */
        {
            int incr;
            int oldlen = buf->signmaplen;
            buf->signmaplen *= 2;
            incr = buf->signmaplen - oldlen;
            buf->signmap = (int *)vim_realloc(buf->signmap,
                                               buf->signmaplen*sizeof(int *));
            memset(buf->signmap + oldlen, 0, incr * sizeof(int *));
        }
    }

    buf->signmap[buf->signmapused++] = i + 1;

}


/*
 * See if we have the requested sign type in the buffer.
 */
    static int
mapsigntype(nbbuf_T *buf, int localsigntype)
{
    if (--localsigntype >= 0 && localsigntype < buf->signmapused)
        return buf->signmap[localsigntype];

    return 0;
}


/*
 * Compute length of buffer, don't print anything.
 */
    static long
get_buf_size(buf_T *bufp)
{
    linenr_T    lnum;
    long        char_count = 0;
    int         eol_size;
    long        last_check = 100000L;

    if (bufp->b_ml.ml_flags & ML_EMPTY)
        return 0;
    else
    {
        if (get_fileformat(bufp) == EOL_DOS)
            eol_size = 2;
        else
            eol_size = 1;
        for (lnum = 1; lnum <= bufp->b_ml.ml_line_count; ++lnum)
        {
            char_count += (long)STRLEN(ml_get(lnum)) + eol_size;
            /* Check for a CTRL-C every 100000 characters */
            if (char_count > last_check)
            {
                ui_breakcheck();
                if (got_int)
                    return char_count;
                last_check = char_count + 100000L;
            }
        }
        /* Correction for when last line doesn't have an EOL. */
        if (!bufp->b_p_eol && bufp->b_p_bin)
            char_count -= eol_size;
    }

    return char_count;
}

/*
 * Convert character offset to lnum,col
 */
    static pos_T *
off2pos(buf_T *buf, long offset)
{
    linenr_T     lnum;
    static pos_T pos;

    pos.lnum = 0;
    pos.col = 0;
#ifdef FEAT_VIRTUALEDIT
    pos.coladd = 0;
#endif

    if (!(buf->b_ml.ml_flags & ML_EMPTY))
    {
        if ((lnum = ml_find_line_or_offset(buf, (linenr_T)0, &offset)) < 0)
            return NULL;
        pos.lnum = lnum;
        pos.col = offset;
    }

    return &pos;
}

/*
 * Convert an argument in the form "1234" to an offset and compute the
 * lnum/col from it.  Convert an argument in the form "123/12" directly to a
 * lnum/col.
 * "argp" is advanced to after the argument.
 * Return a pointer to the position, NULL if something is wrong.
 */
    static pos_T *
get_off_or_lnum(buf_T *buf, char_u **argp)
{
    static pos_T        mypos;
    long                off;

    off = strtol((char *)*argp, (char **)argp, 10);
    if (**argp == '/')
    {
        mypos.lnum = (linenr_T)off;
        ++*argp;
        mypos.col = strtol((char *)*argp, (char **)argp, 10);
#ifdef FEAT_VIRTUALEDIT
        mypos.coladd = 0;
#endif
        return &mypos;
    }
    return off2pos(buf, off);
}


/*
 * Convert (lnum,col) to byte offset in the file.
 */
    static long
pos2off(buf_T *buf, pos_T *pos)
{
    long         offset = 0;

    if (!(buf->b_ml.ml_flags & ML_EMPTY))
    {
        if ((offset = ml_find_line_or_offset(buf, pos->lnum, 0)) < 0)
            return 0;
        offset += pos->col;
    }

    return offset;
}


/*
 * This message is printed after NetBeans opens a new file. Its
 * similar to the message readfile() uses, but since NetBeans
 * doesn't normally call readfile, we do our own.
 */
    static void
print_read_msg(buf)
    nbbuf_T     *buf;
{
    int     lnum = buf->bufp->b_ml.ml_line_count;
    long    nchars = (long)buf->bufp->b_orig_size;
    char_u  c;

    msg_add_fname(buf->bufp, buf->bufp->b_ffname);
    c = FALSE;

    if (buf->bufp->b_p_ro)
    {
        STRCAT(IObuff, shortmess(SHM_RO) ? _("[RO]") : _("[readonly]"));
        c = TRUE;
    }
    if (!buf->bufp->b_start_eol)
    {
        STRCAT(IObuff, shortmess(SHM_LAST) ? _("[noeol]") : _("[Incomplete last line]"));
        c = TRUE;
    }
    msg_add_lines(c, (long)lnum, nchars);

    /* Now display it */
    vim_free(keep_msg);
    keep_msg = NULL;
    msg_scrolled_ign = TRUE;
    msg_trunc_attr(IObuff, FALSE, 0);
    msg_scrolled_ign = FALSE;
}


/*
 * Print a message after NetBeans writes the file. This message should be identical
 * to the standard message a non-netbeans user would see when writing a file.
 */
    static void
print_save_msg(buf, nchars)
    nbbuf_T     *buf;
    long        nchars;
{
    char_u      c;
    char_u      *p;

    if (nchars >= 0)
    {
        msg_add_fname(buf->bufp, buf->bufp->b_ffname);   /* fname in IObuff with quotes */
        c = FALSE;

        msg_add_lines(c, buf->bufp->b_ml.ml_line_count,
                                                (long)buf->bufp->b_orig_size);

        vim_free(keep_msg);
        keep_msg = NULL;
        msg_scrolled_ign = TRUE;
        p = msg_trunc_attr(IObuff, FALSE, 0);
        if ((msg_scrolled && !need_wait_return) || !buf->initDone)
        {
            /* Need to repeat the message after redrawing when:
             * - When reading from stdin (the screen will be cleared next).
             * - When restart_edit is set (otherwise there will be a delay
             *   before redrawing).
             * - When the screen was scrolled but there is no wait-return
             *   prompt. */
            set_keep_msg(p, 0);
        }
        msg_scrolled_ign = FALSE;
        /* add_to_input_buf((char_u *)"\f", 1); */
    }
    else
    {
        char_u ebuf[BUFSIZ];

        STRCPY(ebuf, (char_u *)_("E505: "));
        STRCAT(ebuf, IObuff);
        STRCAT(ebuf, (char_u *)_("is read-only (add ! to override)"));
        STRCPY(IObuff, ebuf);
        emsg(IObuff);
    }
}

#endif /* defined(FEAT_NETBEANS_INTG) */