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vim/src/if_sniff.c
Bram Moolenaar 071d4279d6 updated for version 7.0001
2004-06-13 20:20:40 +00:00

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/* vi:set ts=8 sts=4 sw=4:
*
* if_sniff.c Interface between Vim and SNiFF+
*
* $Id$
*
* See README.txt for an overview of the Vim source code.
*/
#include "vim.h"
#ifdef WIN32
# include <stdio.h>
# include <fcntl.h>
# include <io.h>
# include <process.h>
# include <string.h>
# include <assert.h>
#else
# ifdef FEAT_GUI_X11
# include "gui_x11.pro"
# endif
# include "os_unixx.h"
#endif
static int sniffemacs_pid;
int fd_from_sniff;
int sniff_connected = 0;
int sniff_request_waiting = 0;
int want_sniff_request = 0;
#define MAX_REQUEST_LEN 512
#define NEED_SYMBOL 2
#define EMPTY_SYMBOL 4
#define NEED_FILE 8
#define SILENT 16
#define DISCONNECT 32
#define CONNECT 64
#define RQ_NONE 0
#define RQ_SIMPLE 1
#define RQ_CONTEXT NEED_FILE + NEED_SYMBOL
#define RQ_SCONTEXT NEED_FILE + NEED_SYMBOL + EMPTY_SYMBOL
#define RQ_NOSYMBOL NEED_FILE
#define RQ_SILENT RQ_NOSYMBOL + SILENT
#define RQ_CONNECT RQ_NONE + CONNECT
#define RQ_DISCONNECT RQ_SIMPLE + DISCONNECT
struct sn_cmd
{
char *cmd_name;
char cmd_code;
char *cmd_msg;
int cmd_type;
};
struct sn_cmd_list
{
struct sn_cmd* sniff_cmd;
struct sn_cmd_list* next_cmd;
};
static struct sn_cmd sniff_cmds[] =
{
{ "toggle", 'e', N_("Toggle implementation/definition"),RQ_SCONTEXT },
{ "superclass", 's', N_("Show base class of"), RQ_CONTEXT },
{ "overridden", 'm', N_("Show overridden member function"),RQ_SCONTEXT },
{ "retrieve-file", 'r', N_("Retrieve from file"), RQ_CONTEXT },
{ "retrieve-project",'p', N_("Retrieve from project"), RQ_CONTEXT },
{ "retrieve-all-projects",
'P', N_("Retrieve from all projects"), RQ_CONTEXT },
{ "retrieve-next", 'R', N_("Retrieve"), RQ_CONTEXT },
{ "goto-symbol", 'g', N_("Show source of"), RQ_CONTEXT },
{ "find-symbol", 'f', N_("Find symbol"), RQ_CONTEXT },
{ "browse-class", 'w', N_("Browse class"), RQ_CONTEXT },
{ "hierarchy", 't', N_("Show class in hierarchy"), RQ_CONTEXT },
{ "restr-hier", 'T', N_("Show class in restricted hierarchy"),RQ_CONTEXT },
{ "xref-to", 'x', N_("Xref refers to"), RQ_CONTEXT },
{ "xref-by", 'X', N_("Xref referred by"), RQ_CONTEXT },
{ "xref-has", 'c', N_("Xref has a"), RQ_CONTEXT },
{ "xref-used-by", 'C', N_("Xref used by"), RQ_CONTEXT },
{ "show-docu", 'd', N_("Show docu of"), RQ_CONTEXT },
{ "gen-docu", 'D', N_("Generate docu for"), RQ_CONTEXT },
{ "connect", 'y', NULL, RQ_CONNECT },
{ "disconnect", 'q', NULL, RQ_DISCONNECT },
{ "font-info", 'z', NULL, RQ_SILENT },
{ "update", 'u', NULL, RQ_SILENT },
{ NULL, '\0', NULL, 0}
};
static char *SniffEmacs[2] = {"sniffemacs", (char *)NULL}; /* Yes, Emacs! */
static int fd_to_sniff;
static int sniff_will_disconnect = 0;
static char msg_sniff_disconnect[] = N_("Cannot connect to SNiFF+. Check environment (sniffemacs must be found in $PATH).\n");
static char sniff_rq_sep[] = " ";
static struct sn_cmd_list *sniff_cmd_ext = NULL;
/* Initializing vim commands
* executed each time vim connects to Sniff
*/
static char *init_cmds[]= {
"augroup sniff",
"autocmd BufWritePost * sniff update",
"autocmd BufReadPost * sniff font-info",
"autocmd VimLeave * sniff disconnect",
"augroup END",
"let g:sniff_connected = 1",
"if ! exists('g:sniff_mappings_sourced')|"
"if ! exists('g:sniff_mappings')|"
"if exists('$SNIFF_DIR4')|"
"let g:sniff_mappings='$SNIFF_DIR4/config/integrations/vim/sniff.vim'|"
"else|"
"let g:sniff_mappings='$SNIFF_DIR/config/sniff.vim'|"
"endif|"
"endif|"
"let g:sniff_mappings=expand(g:sniff_mappings)|"
"if filereadable(g:sniff_mappings)|"
"execute 'source' g:sniff_mappings|"
"let g:sniff_mappings_sourced=1|"
"endif|"
"endif",
NULL
};
/*-------- Function Prototypes ----------------------------------*/
static int ConnectToSniffEmacs __ARGS((void));
static void sniff_connect __ARGS((void));
static void HandleSniffRequest __ARGS((char* buffer));
static int get_request __ARGS((int fd, char *buf, int maxlen));
static void WriteToSniff __ARGS((char *str));
static void SendRequest __ARGS((struct sn_cmd *command, char* symbol));
static void vi_msg __ARGS((char *));
static void vi_error_msg __ARGS((char *));
static char *vi_symbol_under_cursor __ARGS((void));
static void vi_open_file __ARGS((char *));
static char *vi_buffer_name __ARGS((void));
static buf_T *vi_find_buffer __ARGS((char *));
static void vi_exec_cmd __ARGS((char *));
static void vi_set_cursor_pos __ARGS((long char_nr));
static long vi_cursor_pos __ARGS((void));
/* debug trace */
#if 0
static FILE* _tracefile = NULL;
#define SNIFF_TRACE_OPEN(file) if (!_tracefile) _tracefile = fopen(file, "w")
#define SNIFF_TRACE(msg) fprintf(_tracefile, msg); fflush(_tracefile);
#define SNIFF_TRACE1(msg, arg) fprintf(_tracefile, msg,arg); fflush(_tracefile);
#define SNIFF_TRACE_CLOSE fclose(_tracefile); _tracefile=NULL;
#else
#define SNIFF_TRACE_OPEN(file)
#define SNIFF_TRACE(msg)
#define SNIFF_TRACE1(msg, arg)
#define SNIFF_TRACE_CLOSE
#endif
/*-------- Windows Only Declarations -----------------------------*/
#ifdef WIN32
static int sniff_request_processed=1;
static HANDLE sniffemacs_handle=NULL;
static HANDLE readthread_handle=NULL;
static HANDLE handle_to_sniff=NULL;
static HANDLE handle_from_sniff=NULL;
struct sniffBufNode
{
struct sniffBufNode *next;
int bufLen;
char buf[MAX_REQUEST_LEN];
};
static struct sniffBufNode *sniffBufStart=NULL;
static struct sniffBufNode *sniffBufEnd=NULL;
static HANDLE hBufferMutex=NULL;
# ifdef FEAT_GUI_W32
extern HWND s_hwnd; /* gvim's Window handle */
# endif
/*
* some helper functions for Windows port only
*/
static HANDLE
ExecuteDetachedProgram(char *szBinary, char *szCmdLine,
HANDLE hStdInput, HANDLE hStdOutput)
{
BOOL bResult;
DWORD nError;
PROCESS_INFORMATION aProcessInformation;
PROCESS_INFORMATION *pProcessInformation= &aProcessInformation;
STARTUPINFO aStartupInfo;
STARTUPINFO *pStartupInfo= &aStartupInfo;
DWORD dwCreationFlags= 0;
char szPath[512];
HINSTANCE hResult;
hResult = FindExecutable(szBinary, ".", szPath);
if ((int)hResult <= 32)
{
/* can't find the exe file */
return NULL;
}
ZeroMemory(pStartupInfo, sizeof(*pStartupInfo));
pStartupInfo->dwFlags= STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
pStartupInfo->hStdInput = hStdInput;
pStartupInfo->hStdOutput = hStdOutput;
pStartupInfo->wShowWindow= SW_HIDE;
pStartupInfo->cb = sizeof(STARTUPINFO);
bResult= CreateProcess(
szPath,
szCmdLine,
NULL, /* security attr for process */
NULL, /* security attr for primary thread */
TRUE, /* DO inherit stdin and stdout */
dwCreationFlags, /* creation flags */
NULL, /* environment */
".", /* current directory */
pStartupInfo, /* startup info: NULL crashes */
pProcessInformation /* process information: NULL crashes */
);
nError= GetLastError();
if (bResult)
{
CloseHandle(pProcessInformation->hThread);
CloseHandle(hStdInput);
CloseHandle(hStdOutput);
return(pProcessInformation->hProcess);
}
else
return(NULL);
}
/*
* write to the internal Thread / Thread communications buffer.
* Return TRUE if successful, FALSE else.
*/
static BOOL
writeToBuffer(char *msg, int len)
{
DWORD dwWaitResult; /* Request ownership of mutex. */
struct sniffBufNode *bn;
int bnSize;
SNIFF_TRACE1("writeToBuffer %d\n", len);
bnSize = sizeof(struct sniffBufNode) - MAX_REQUEST_LEN + len + 1;
if (bnSize < 128) bnSize = 128; /* minimum length to avoid fragmentation */
bn = (struct sniffBufNode *)malloc(bnSize);
if (!bn)
return FALSE;
memcpy(bn->buf, msg, len);
bn->buf[len]='\0'; /* terminate CString for added safety */
bn->next = NULL;
bn->bufLen = len;
/* now, acquire a Mutex for adding the string to our linked list */
dwWaitResult = WaitForSingleObject(
hBufferMutex, /* handle of mutex */
1000L); /* one-second time-out interval */
if (dwWaitResult == WAIT_OBJECT_0)
{
/* The thread got mutex ownership. */
if (sniffBufEnd)
{
sniffBufEnd->next = bn;
sniffBufEnd = bn;
}
else
sniffBufStart = sniffBufEnd = bn;
/* Release ownership of the mutex object. */
if (! ReleaseMutex(hBufferMutex))
{
/* Deal with error. */
}
return TRUE;
}
/* Cannot get mutex ownership due to time-out or mutex object abandoned. */
free(bn);
return FALSE;
}
/*
* read from the internal Thread / Thread communications buffer.
* Return TRUE if successful, FALSE else.
*/
static int
ReadFromBuffer(char *buf, int maxlen)
{
DWORD dwWaitResult; /* Request ownership of mutex. */
int theLen;
struct sniffBufNode *bn;
dwWaitResult = WaitForSingleObject(
hBufferMutex, /* handle of mutex */
1000L); /* one-second time-out interval */
if (dwWaitResult == WAIT_OBJECT_0)
{
if (!sniffBufStart)
{
/* all pending Requests Processed */
theLen = 0;
}
else
{
bn = sniffBufStart;
theLen = bn->bufLen;
SNIFF_TRACE1("ReadFromBuffer %d\n", theLen);
if (theLen >= maxlen)
{
/* notify the user of buffer overflow? */
theLen = maxlen-1;
}
memcpy(buf, bn->buf, theLen);
buf[theLen] = '\0';
if (! (sniffBufStart = bn->next))
{
sniffBufEnd = NULL;
sniff_request_processed = 1;
}
free(bn);
}
if (! ReleaseMutex(hBufferMutex))
{
/* Deal with error. */
}
return theLen;
}
/* Cannot get mutex ownership due to time-out or mutex object abandoned. */
return -1;
}
/* on Win32, a separate Thread reads the input pipe. get_request is not needed here. */
static void __cdecl
SniffEmacsReadThread(void *dummy)
{
static char ReadThreadBuffer[MAX_REQUEST_LEN];
int ReadThreadLen=0;
int result=0;
int msgLen=0;
char *msgStart, *msgCur;
SNIFF_TRACE("begin thread\n");
/* Read from the pipe to SniffEmacs */
while (sniff_connected)
{
if (!ReadFile(handle_from_sniff,
ReadThreadBuffer + ReadThreadLen, /* acknowledge rest in buffer */
MAX_REQUEST_LEN - ReadThreadLen,
&result,
NULL))
{
DWORD err = GetLastError();
result = -1;
}
if (result < 0)
{
/* probably sniffemacs died... log the Error? */
sniff_disconnect(1);
}
else if (result > 0)
{
ReadThreadLen += result-1; /* total length of valid chars */
for(msgCur=msgStart=ReadThreadBuffer; ReadThreadLen > 0; msgCur++, ReadThreadLen--)
{
if (*msgCur == '\0' || *msgCur == '\r' || *msgCur == '\n')
{
msgLen = msgCur-msgStart; /* don't add the CR/LF chars */
if (msgLen > 0)
writeToBuffer(msgStart, msgLen);
msgStart = msgCur + 1; /* over-read single CR/LF chars */
}
}
/* move incomplete message to beginning of buffer */
ReadThreadLen = msgCur - msgStart;
if (ReadThreadLen > 0)
mch_memmove(ReadThreadBuffer, msgStart, ReadThreadLen);
if (sniff_request_processed)
{
/* notify others that new data has arrived */
sniff_request_processed = 0;
sniff_request_waiting = 1;
#ifdef FEAT_GUI_W32
PostMessage(s_hwnd, WM_USER, (WPARAM)0, (LPARAM)0);
#endif
}
}
}
SNIFF_TRACE("end thread\n");
}
#endif /* WIN32 */
/*-------- End of Windows Only Declarations ------------------------*/
/* ProcessSniffRequests
* Function that should be called from outside
* to process the waiting sniff requests
*/
void
ProcessSniffRequests()
{
static char buf[MAX_REQUEST_LEN];
int len;
while (sniff_connected)
{
#ifdef WIN32
len = ReadFromBuffer(buf, sizeof(buf));
#else
len = get_request(fd_from_sniff, buf, sizeof(buf));
#endif
if (len < 0)
{
vi_error_msg(_("E274: Sniff: Error during read. Disconnected"));
sniff_disconnect(1);
break;
}
else if (len > 0)
HandleSniffRequest( buf );
else
break;
}
if (sniff_will_disconnect) /* Now the last msg has been processed */
sniff_disconnect(1);
}
static struct sn_cmd *
find_sniff_cmd(cmd)
char *cmd;
{
struct sn_cmd *sniff_cmd = NULL;
int i;
for(i=0; sniff_cmds[i].cmd_name; i++)
{
if (!strcmp(cmd, sniff_cmds[i].cmd_name))
{
sniff_cmd = &sniff_cmds[i];
break;
}
}
if (!sniff_cmd)
{
struct sn_cmd_list *list = sniff_cmd_ext;
while(list)
{
if (!strcmp(cmd, list->sniff_cmd->cmd_name))
{
sniff_cmd = list->sniff_cmd;
break;
}
list = list->next_cmd;
}
}
return sniff_cmd;
}
static int
add_sniff_cmd(cmd, def, msg)
char *cmd;
char *def;
char *msg;
{
int rc = 0;
if (def != NULL && def[0] != NUL && find_sniff_cmd(cmd) == NULL)
{
struct sn_cmd_list *list = sniff_cmd_ext;
struct sn_cmd *sniff_cmd = (struct sn_cmd*)malloc(sizeof(struct sn_cmd));
struct sn_cmd_list *cmd_node = (struct sn_cmd_list*)malloc(sizeof(struct sn_cmd_list));
int rq_type = 0;
/* unescape message text */
char *p = msg;
char *end = p+strlen(msg);
while(*p)
{
if (*p == '\\')
mch_memmove(p,p+1,end-p);
p++;
}
SNIFF_TRACE1("request name = %s\n",cmd);
SNIFF_TRACE1("request def = %s\n",def);
SNIFF_TRACE1("request msg = %s\n",msg);
while(list && list->next_cmd)
list = list->next_cmd;
if (!list)
sniff_cmd_ext = cmd_node;
else
list->next_cmd = cmd_node;
sniff_cmd->cmd_name = cmd;
sniff_cmd->cmd_code = def[0];
sniff_cmd->cmd_msg = msg;
switch(def[1])
{
case 'f':
rq_type = RQ_NOSYMBOL;
break;
case 's':
rq_type = RQ_CONTEXT;
break;
case 'S':
rq_type = RQ_SCONTEXT;
break;
default:
rq_type = RQ_SIMPLE;
break;
}
sniff_cmd->cmd_type = rq_type;
cmd_node->sniff_cmd = sniff_cmd;
cmd_node->next_cmd = NULL;
rc = 1;
}
return rc;
}
/* ex_sniff
* Handle ":sniff" command
*/
void
ex_sniff(eap)
exarg_T *eap;
{
char_u *arg = eap->arg;
char_u *symbol = NULL;
char_u *cmd = NULL;
SNIFF_TRACE_OPEN("if_sniff.log");
if (ends_excmd(*arg)) /* no request: print available commands */
{
int i;
msg_start();
msg_outtrans_attr((char_u *)"-- SNiFF+ commands --", hl_attr(HLF_T));
for(i=0; sniff_cmds[i].cmd_name; i++)
{
msg_putchar('\n');
msg_outtrans((char_u *)":sniff ");
msg_outtrans((char_u *)sniff_cmds[i].cmd_name);
}
msg_putchar('\n');
msg_outtrans((char_u *)_("SNiFF+ is currently "));
if (!sniff_connected)
msg_outtrans((char_u *)_("not "));
msg_outtrans((char_u *)_("connected"));
msg_end();
}
else /* extract command name and symbol if present */
{
symbol = skiptowhite(arg);
cmd = vim_strnsave(arg, (int)(symbol-arg));
symbol = skipwhite(symbol);
if (ends_excmd(*symbol))
symbol = NULL;
if (!strcmp((char *)cmd, "addcmd"))
{
char_u *def = skiptowhite(symbol);
char_u *name = vim_strnsave(symbol, (int)(def-symbol));
char_u *msg;
def = skipwhite(def);
msg = skiptowhite(def);
def = vim_strnsave(def, (int)(msg-def));
msg = skipwhite(msg);
if (ends_excmd(*msg))
msg = vim_strsave(name);
else
msg = vim_strnsave(msg, (int)(skiptowhite_esc(msg)-msg));
if (!add_sniff_cmd((char*)name, (char*)def, (char*)msg))
{
vim_free(msg);
vim_free(def);
vim_free(name);
}
}
else
{
struct sn_cmd* sniff_cmd = find_sniff_cmd((char*)cmd);
if (sniff_cmd)
SendRequest(sniff_cmd, (char *)symbol);
else
EMSG2(_("E275: Unknown SNiFF+ request: %s"), cmd);
}
vim_free(cmd);
}
}
static void
sniff_connect()
{
if (sniff_connected)
return;
if (ConnectToSniffEmacs())
vi_error_msg(_("E276: Error connecting to SNiFF+"));
else
{
int i;
for (i = 0; init_cmds[i]; i++)
vi_exec_cmd(init_cmds[i]);
}
}
void
sniff_disconnect(immediately)
int immediately;
{
if (!sniff_connected)
return;
if (immediately)
{
vi_exec_cmd("augroup sniff");
vi_exec_cmd("au!");
vi_exec_cmd("augroup END");
vi_exec_cmd("unlet g:sniff_connected");
sniff_connected = 0;
want_sniff_request = 0;
sniff_will_disconnect = 0;
#ifdef FEAT_GUI
if (gui.in_use)
gui_mch_wait_for_chars(0L);
#endif
#ifdef WIN32
while(sniffBufStart != NULL)
{
struct sniffBufNode *node = sniffBufStart;
sniffBufStart = sniffBufStart->next;
free(node);
}
sniffBufStart = sniffBufEnd = NULL;
sniff_request_processed = 1;
CloseHandle(handle_to_sniff);
CloseHandle(handle_from_sniff);
WaitForSingleObject(sniffemacs_handle, 1000L);
CloseHandle(sniffemacs_handle);
sniffemacs_handle = NULL;
WaitForSingleObject(readthread_handle, 1000L);
readthread_handle = NULL;
CloseHandle(hBufferMutex);
hBufferMutex = NULL;
SNIFF_TRACE_CLOSE;
#else
close(fd_to_sniff);
close(fd_from_sniff);
wait(NULL);
#endif
}
else
{
#ifdef WIN32
_sleep(2);
if (!sniff_request_processed)
ProcessSniffRequests();
#else
sleep(2); /* Incoming msg could disturb edit */
#endif
sniff_will_disconnect = 1; /* We expect disconnect msg in 2 secs */
}
}
/* ConnectToSniffEmacs
* Connect to Sniff: returns 1 on error
*/
static int
ConnectToSniffEmacs()
{
#ifdef WIN32 /* Windows Version of the Code */
HANDLE ToSniffEmacs[2], FromSniffEmacs[2];
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE;
if (! CreatePipe(&ToSniffEmacs[0], &ToSniffEmacs[1], &sa, 0))
return 1;
if (! CreatePipe(&FromSniffEmacs[0], &FromSniffEmacs[1], &sa, 0))
return 1;
sniffemacs_handle = ExecuteDetachedProgram(SniffEmacs[0], SniffEmacs[0],
ToSniffEmacs[0], FromSniffEmacs[1]);
if (sniffemacs_handle)
{
handle_to_sniff = ToSniffEmacs[1];
handle_from_sniff = FromSniffEmacs[0];
sniff_connected = 1;
hBufferMutex = CreateMutex(
NULL, /* no security attributes */
FALSE, /* initially not owned */
"SniffReadBufferMutex"); /* name of mutex */
if (hBufferMutex == NULL)
{
/* Check for error. */
}
readthread_handle = (HANDLE)_beginthread(SniffEmacsReadThread, 0, NULL);
return 0;
}
else
{
/* error in spawn() */
return 1;
}
#else /* UNIX Version of the Code */
int ToSniffEmacs[2], FromSniffEmacs[2];
pipe(ToSniffEmacs);
pipe(FromSniffEmacs);
/* fork */
if ((sniffemacs_pid=fork()) == 0)
{
/* child */
/* prepare communication pipes */
close(ToSniffEmacs[1]);
close(FromSniffEmacs[0]);
dup2(ToSniffEmacs[0],fileno(stdin)); /* write to ToSniffEmacs[1] */
dup2(FromSniffEmacs[1],fileno(stdout));/* read from FromSniffEmacs[0] */
close(ToSniffEmacs[0]);
close(FromSniffEmacs[1]);
/* start sniffemacs */
execvp (SniffEmacs[0], SniffEmacs);
{
/* FILE *out = fdopen(FromSniffEmacs[1], "w"); */
sleep(1);
fputs(_(msg_sniff_disconnect), stdout);
fflush(stdout);
sleep(3);
#ifdef FEAT_GUI
if (gui.in_use)
gui_exit(1);
#endif
exit(1);
}
return 1;
}
else if (sniffemacs_pid > 0)
{
/* parent process */
close(ToSniffEmacs[0]);
fd_to_sniff = ToSniffEmacs[1];
close(FromSniffEmacs[1]);
fd_from_sniff = FromSniffEmacs[0];
sniff_connected = 1;
return 0;
}
else /* error in fork() */
return 1;
#endif /* UNIX Version of the Code */
}
/* HandleSniffRequest
* Handle one request from SNiFF+
*/
static void
HandleSniffRequest(buffer)
char *buffer;
{
char VICommand[MAX_REQUEST_LEN];
char command;
char *arguments;
char *token;
char *argv[3];
int argc = 0;
buf_T *buf;
const char *SetTab = "set tabstop=%d";
const char *SelectBuf = "buf %s";
const char *DeleteBuf = "bd %s";
const char *UnloadBuf = "bun %s";
const char *GotoLine = "%d";
command = buffer[0];
arguments = &buffer[1];
token = strtok(arguments, sniff_rq_sep);
while(argc <3)
{
if (token)
{
argv[argc] = (char*)vim_strsave((char_u *)token);
token = strtok(0, sniff_rq_sep);
}
else
argv[argc] = strdup("");
argc++;
}
switch (command)
{
case 'o' : /* visit file at char pos */
case 'O' : /* visit file at line number */
{
char *file = argv[0];
int position = atoi(argv[1]);
buf = vi_find_buffer(file);
setpcmark(); /* insert current pos in jump list [mark.c]*/
if (!buf)
vi_open_file(file);
else if (buf!=curbuf)
{
sprintf(VICommand, SelectBuf, file);
vi_exec_cmd(VICommand);
}
if (command == 'o')
vi_set_cursor_pos((long)position);
else
{
sprintf(VICommand, GotoLine, (int)position);
vi_exec_cmd(VICommand);
}
checkpcmark(); /* [mark.c] */
#if defined(FEAT_GUI_X11) || defined(FEAT_GUI_W32)
if (gui.in_use && !gui.in_focus) /* Raise Vim Window */
{
# ifdef FEAT_GUI_W32
SetForegroundWindow(s_hwnd);
# else
extern Widget vimShell;
XSetInputFocus(gui.dpy, XtWindow(vimShell), RevertToNone,
CurrentTime);
XRaiseWindow(gui.dpy, XtWindow(vimShell));
# endif
}
#endif
break;
}
case 'p' : /* path of file has changed */
/* when changing from shared to private WS (checkout) */
{
char *file = argv[0];
char *new_path = argv[1];
buf = vi_find_buffer(file);
if (buf && !buf->b_changed) /* delete buffer only if not modified */
{
sprintf(VICommand, DeleteBuf, file);
vi_exec_cmd(VICommand);
}
vi_open_file(new_path);
break;
}
case 'w' : /* writability has changed */
/* Sniff sends request twice,
* but only the last one is the right one */
{
char *file = argv[0];
int writable = atoi(argv[1]);
buf = vi_find_buffer(file);
if (buf)
{
buf->b_p_ro = !writable;
if (buf != curbuf)
{
buf->b_flags |= BF_CHECK_RO + BF_NEVERLOADED;
if (writable && !buf->b_changed)
{
sprintf(VICommand, UnloadBuf, file);
vi_exec_cmd(VICommand);
}
}
else if (writable && !buf->b_changed)
{
vi_exec_cmd("e");
}
}
break;
}
case 'h' : /* highlight info */
break; /* not implemented */
case 't' : /* Set tab width */
{
int tab_width = atoi(argv[1]);
if (tab_width > 0 && tab_width <= 16)
{
sprintf(VICommand, SetTab, tab_width);
vi_exec_cmd(VICommand);
}
break;
}
case '|':
{
/* change the request separator */
sniff_rq_sep[0] = arguments[0];
/* echo the request */
WriteToSniff(buffer);
break;
}
case 'A' : /* Warning/Info msg */
vi_msg(arguments);
if (!strncmp(arguments, "Disconnected", 12)) /* "Disconnected ..." */
sniff_disconnect(1); /* unexpected disconnection */
break;
case 'a' : /* Error msg */
vi_error_msg(arguments);
if (!strncmp(arguments, "Cannot connect", 14)) /* "Cannot connect ..." */
sniff_disconnect(1);
break;
default :
break;
}
while(argc)
vim_free(argv[--argc]);
}
#ifndef WIN32
/* get_request
* read string from fd up to next newline (excluding the nl),
* returns length of string
* 0 if no data available or no complete line
* <0 on error
*/
static int
get_request(fd, buf, maxlen)
int fd;
char *buf;
int maxlen;
{
static char inbuf[1024];
static int pos = 0, bytes = 0;
int len;
#ifdef HAVE_SELECT
struct timeval tval;
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
tval.tv_sec = 0;
tval.tv_usec = 0;
#else
struct pollfd fds;
fds.fd = fd;
fds.events = POLLIN;
#endif
for (len = 0; len < maxlen; len++)
{
if (pos >= bytes) /* end of buffer reached? */
{
#ifdef HAVE_SELECT
if (select(fd + 1, &rfds, NULL, NULL, &tval) > 0)
#else
if (poll(&fds, 1, 0) > 0)
#endif
{
pos = 0;
bytes = read(fd, inbuf, sizeof(inbuf));
if (bytes <= 0)
return bytes;
}
else
{
pos = pos-len;
buf[0] = '\0';
return 0;
}
}
if ((buf[len] = inbuf[pos++]) =='\n')
break;
}
buf[len] = '\0';
return len;
}
#endif /* WIN32 */
static void
SendRequest(command, symbol)
struct sn_cmd *command;
char *symbol;
{
int cmd_type = command->cmd_type;
static char cmdstr[MAX_REQUEST_LEN];
static char msgtxt[MAX_REQUEST_LEN];
char *buffer_name = NULL;
if (cmd_type == RQ_CONNECT)
{
sniff_connect();
return;
}
if (!sniff_connected && !(cmd_type & SILENT))
{
vi_error_msg(_("E278: SNiFF+ not connected"));
return;
}
if (cmd_type & NEED_FILE)
{
if (!curbuf->b_sniff)
{
if (!(cmd_type & SILENT))
vi_error_msg(_("E279: Not a SNiFF+ buffer"));
return;
}
buffer_name = vi_buffer_name();
if (buffer_name == NULL)
return;
if (cmd_type & NEED_SYMBOL)
{
if (cmd_type & EMPTY_SYMBOL)
symbol = " ";
else if (!symbol && !(symbol = vi_symbol_under_cursor()))
return; /* error msg already displayed */
}
if (symbol)
sprintf(cmdstr, "%c%s%s%ld%s%s\n",
command->cmd_code,
buffer_name,
sniff_rq_sep,
vi_cursor_pos(),
sniff_rq_sep,
symbol
);
else
sprintf(cmdstr, "%c%s\n", command->cmd_code, buffer_name);
}
else /* simple request */
{
cmdstr[0] = command->cmd_code;
cmdstr[1] = '\n';
cmdstr[2] = '\0';
}
if (command->cmd_msg && !(cmd_type & SILENT))
{
if ((cmd_type & NEED_SYMBOL) && !(cmd_type & EMPTY_SYMBOL))
{
sprintf(msgtxt, "%s: %s", _(command->cmd_msg), symbol);
vi_msg(msgtxt);
}
else
vi_msg(_(command->cmd_msg));
}
WriteToSniff(cmdstr);
if (cmd_type & DISCONNECT)
sniff_disconnect(0);
}
static void
WriteToSniff(str)
char *str;
{
int bytes;
#ifdef WIN32
if (! WriteFile(handle_to_sniff, str, strlen(str), &bytes, NULL))
{
DWORD err=GetLastError();
bytes = -1;
}
#else
bytes = write(fd_to_sniff, str, strlen(str));
#endif
if (bytes<0)
{
vi_msg(_("Sniff: Error during write. Disconnected"));
sniff_disconnect(1);
}
}
/*-------- vim helping functions --------------------------------*/
static void
vi_msg(str)
char *str;
{
if (str != NULL && *str != NUL)
MSG((char_u *)str);
}
static void
vi_error_msg(str)
char *str;
{
if (str != NULL && *str != NUL)
EMSG((char_u *)str);
}
static void
vi_open_file(fname)
char *fname;
{
++no_wait_return;
do_ecmd(0, (char_u *)fname, NULL, NULL, ECMD_ONE, ECMD_HIDE+ECMD_OLDBUF);
curbuf->b_sniff = TRUE;
--no_wait_return; /* [ex_docmd.c] */
}
static buf_T *
vi_find_buffer(fname)
char *fname;
{ /* derived from buflist_findname() [buffer.c] */
buf_T *buf;
for (buf = firstbuf; buf != NULL; buf = buf->b_next)
if (buf->b_sfname != NULL && fnamecmp(fname, buf->b_sfname) == 0)
return (buf);
return NULL;
}
static char *
vi_symbol_under_cursor()
{
int len;
char *symbolp;
char *p;
static char sniff_symbol[256];
len = find_ident_under_cursor((char_u **)&symbolp, FIND_IDENT);
/* [normal.c] */
if (len <= 0)
return NULL;
for (p=sniff_symbol; len; len--)
*p++ = *symbolp++;
*p = '\0';
return sniff_symbol;
}
static char *
vi_buffer_name()
{
return (char *)curbuf->b_sfname;
}
static void
vi_exec_cmd(vicmd)
char *vicmd;
{
do_cmdline_cmd((char_u *)vicmd); /* [ex_docmd.c] */
}
/*
* Set cursor on character position
* derived from cursor_pos_info() [buffer.c]
*/
static void
vi_set_cursor_pos(char_pos)
long char_pos;
{
linenr_T lnum;
long char_count = 1; /* first position = 1 */
int line_size;
int eol_size;
if (char_pos == 0)
{
char_pos = 1;
}
if (get_fileformat(curbuf) == EOL_DOS)
eol_size = 2;
else
eol_size = 1;
for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum)
{
line_size = STRLEN(ml_get(lnum)) + eol_size;
if (char_count+line_size > char_pos) break;
char_count += line_size;
}
curwin->w_cursor.lnum = lnum;
curwin->w_cursor.col = char_pos - char_count;
}
static long
vi_cursor_pos()
{
linenr_T lnum;
long char_count=1; /* sniff starts with pos 1 */
int line_size;
int eol_size;
if (curbuf->b_p_tx)
eol_size = 2;
else
eol_size = 1;
for (lnum = 1; lnum < curwin->w_cursor.lnum; ++lnum)
{
line_size = STRLEN(ml_get(lnum)) + eol_size;
char_count += line_size;
}
return char_count + curwin->w_cursor.col;
}
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