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-rw-r--r--tools/driver/ELWrapper.cpp422
1 files changed, 0 insertions, 422 deletions
diff --git a/tools/driver/ELWrapper.cpp b/tools/driver/ELWrapper.cpp
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-//===-- ELWrapper.cpp -------------------------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-// this file is only relevant for Visual C++
-#if defined( _MSC_VER )
-
-#include "lldb/Host/windows/windows.h"
-
-#include "ELWrapper.h"
-#include <vector>
-#include <assert.h>
-
-// index one of the variable arguments
-// presuming "(EditLine *el, ..." is first in the argument list
-#define GETARG( X ) ( (void* ) *( ( (int**) &el ) + ((X) + 2) ) )
-
-// edit line EL_ADDFN function pointer type
-typedef unsigned char (*el_addfn_func)(EditLine *e, int ch);
-
-// edit line wrapper binding container
-struct el_binding
-{
- //
- const char *name;
- const char *help;
- // function pointer to callback routine
- el_addfn_func func;
- // ascii key this function is bound to
- const char *key;
-};
-
-// stored key bindings
-static std::vector<el_binding*> _bindings;
-
-//TODO: this should infact be related to the exact edit line context we create
-static void *clientData = NULL;
-
-// store the current prompt string
-// default to what we expect to receive anyway
-static const char *_prompt = "(lldb) ";
-
-#if !defined( _WIP_INPUT_METHOD )
-
-static char *
-el_get_s (char *buffer, int chars)
-{
- return gets_s(buffer, chars);
-}
-#else
-
-static void
-con_output (char _in)
-{
- HANDLE hout = GetStdHandle( STD_OUTPUT_HANDLE );
- DWORD written = 0;
- // get the cursor position
- CONSOLE_SCREEN_BUFFER_INFO info;
- GetConsoleScreenBufferInfo( hout, &info );
- // output this char
- WriteConsoleOutputCharacterA( hout, &_in, 1, info.dwCursorPosition, &written );
- // advance cursor position
- info.dwCursorPosition.X++;
- SetConsoleCursorPosition( hout, info.dwCursorPosition );
-}
-
-static void
-con_backspace (void)
-{
- HANDLE hout = GetStdHandle( STD_OUTPUT_HANDLE );
- DWORD written = 0;
- // get cursor position
- CONSOLE_SCREEN_BUFFER_INFO info;
- GetConsoleScreenBufferInfo( hout, &info );
- // nudge cursor backwards
- info.dwCursorPosition.X--;
- SetConsoleCursorPosition( hout, info.dwCursorPosition );
- // blank out the last character
- WriteConsoleOutputCharacterA( hout, " ", 1, info.dwCursorPosition, &written );
-}
-
-static void
-con_return (void)
-{
- HANDLE hout = GetStdHandle( STD_OUTPUT_HANDLE );
- DWORD written = 0;
- // get cursor position
- CONSOLE_SCREEN_BUFFER_INFO info;
- GetConsoleScreenBufferInfo( hout, &info );
- // move onto the new line
- info.dwCursorPosition.X = 0;
- info.dwCursorPosition.Y++;
- SetConsoleCursorPosition( hout, info.dwCursorPosition );
-}
-
-static bool
-runBind (char _key)
-{
- for ( int i=0; i<_bindings.size(); i++ )
- {
- el_binding *bind = _bindings[i];
- if ( bind->key[0] == _key )
- {
- bind->func( (EditLine*) -1, _key );
- return true;
- }
- }
- return false;
-}
-
-// replacement get_s which is EL_BIND aware
-static char *
-el_get_s (char *buffer, int chars)
-{
- //
- char *head = buffer;
- //
- for ( ;; Sleep( 10 ) )
- {
- //
- INPUT_RECORD _record;
- //
- DWORD _read = 0;
- if ( ReadConsoleInputA( GetStdHandle( STD_INPUT_HANDLE ), &_record, 1, &_read ) == FALSE )
- break;
- // if we didnt read a key
- if ( _read == 0 )
- continue;
- // only interested in key events
- if ( _record.EventType != KEY_EVENT )
- continue;
- // is the key down
- if (! _record.Event.KeyEvent.bKeyDown )
- continue;
- // read the ascii key character
- char _key = _record.Event.KeyEvent.uChar.AsciiChar;
- // non ascii conformant key press
- if ( _key == 0 )
- {
- // check the scan code
- // if VK_UP scroll back through history
- // if VK_DOWN scroll forward through history
- continue;
- }
- // try to execute any bind this key may have
- if ( runBind( _key ) )
- continue;
- // if we read a return key
- if ( _key == '\n' || _key == '\r' )
- {
- con_return( );
- break;
- }
- // key is backspace
- if ( _key == 0x8 )
- {
- // avoid deleting past beginning
- if ( head > buffer )
- {
- con_backspace( );
- head--;
- }
- continue;
- }
-
- // add this key to the input buffer
- if ( (head-buffer) < (chars-1) )
- {
- con_output( _key );
- *(head++) = _key;
- }
- }
- // insert end of line character
- *head = '\0';
-
- return buffer;
-}
-#endif
-
-// edit line initalise
-EditLine *
-el_init (const char *, FILE *, FILE *, FILE *)
-{
- //
- SetConsoleTitleA( "lldb" );
- // return dummy handle
- return (EditLine*) -1;
-}
-
-const char *
-el_gets (EditLine *el, int *length)
-{
- // print the prompt if we have one
- if ( _prompt != NULL )
- printf( _prompt );
- // create a buffer for the user input
- char *buffer = new char[ MAX_PATH ];
- // try to get user input string
- if ( el_get_s( buffer, MAX_PATH ) )
- {
- // get the string length in 'length'
- while ( buffer[ *length ] != '\0' )
- (*length)++;
- // return the input buffer
- // remember that this memory has the be free'd somewhere
- return buffer;
- }
- else
- {
- // on error
- delete [] buffer;
- return NULL;
- }
-}
-
-int
-el_set (EditLine *el, int code, ...)
-{
- int **arg = (int**) &el;
- //
- switch ( code )
- {
- // edit line set prompt message
- case ( EL_PROMPT ):
- {
- // EL_PROMPT, char *(*f)( EditLine *)
- // define a prompt printing function as 'f', which is to return a string that
- // contains the prompt.
-
- // get the function pointer from the arg list
- void *func_vp = (void*) *(arg+2);
- // cast to suitable prototype
- const char* (*func_fp)(EditLine*) = (const char*(*)(EditLine *)) func_vp;
- // call to get the prompt as a string
- _prompt = func_fp( el );
- }
- break;
- case ( EL_EDITOR ):
- {
- // EL_EDITOR, const char *mode
- // set editing mode to "emacs" or "vi"
- }
- break;
- case ( EL_HIST ):
- {
- // EL_HIST, History *(*fun)(History *, int op, ... ), const char *ptr
- // defines which histroy function to use, which is usualy history(). Ptr should be the
- // value returned by history_init().
- }
- break;
- case ( EL_ADDFN ):
- {
- // EL_ADDFN, const char *name, const char *help, unsigned char (*func)(EditLine *e, int ch)
- // add a user defined function, func), referred to as 'name' which is invoked when a key which is bound to 'name' is
- // entered. 'help' is a description of 'name'. at involcation time, 'ch' is the key which caused the invocation. the
- // return value of 'func()' should be one of:
- // CC_NORM add a normal character
- // CC_NEWLINE end of line was entered
- // CC_EOF EOF was entered
- // CC_ARGHACK expecting further command input as arguments, do nothing visually.
- // CC_REFRESH refresh display.
- // CC_REFRESH_BEEP refresh display and beep.
- // CC_CURSOR cursor moved so update and perform CC_REFRESH
- // CC_REDISPLAY redisplay entire input line. this is usefull if a key binding outputs extra information.
- // CC_ERROR an error occured. beep and flush tty.
- // CC_FATAL fatal error, reset tty to known state.
-
- el_binding *binding = new el_binding;
- binding->name = (const char *) GETARG( 0 );
- binding->help = (const char *) GETARG( 1 );
- binding->func = (el_addfn_func) GETARG( 2 );
- binding->key = 0;
- // add this to the bindings list
- _bindings.push_back( binding );
- }
- break;
- case ( EL_BIND ):
- {
- // EL_BIND, const char *, ..., NULL
- // perform the BIND buildin command. Refer to editrc(5) for more information.
-
- const char *name = (const char*) GETARG( 1 );
-
- for ( int i=0; i<_bindings.size(); i++ )
- {
- el_binding *bind = _bindings[i];
- if ( strcmp( bind->name, name ) == 0 )
- {
- bind->key = (const char *) GETARG( 0 );
- break;
- }
- }
-
- }
- break;
- case ( EL_CLIENTDATA ):
- {
- clientData = GETARG( 0 );
- }
- break;
- default:
- assert( !"Not Implemented!" );
- }
- return 0;
-}
-
-void
-el_end (EditLine *el)
-{
- assert( !"Not implemented!" );
-}
-
-void
-el_reset (EditLine *)
-{
- assert( !"Not implemented!" );
-}
-
-int
-el_getc (EditLine *, char *)
-{
- assert( !"Not implemented!" );
- return 0;
-}
-
-void
-el_push (EditLine *, char *)
-{
- assert( !"Not implemented!" );
-}
-
-void
-el_beep (EditLine *)
-{
- Beep( 1000, 500 );
-}
-
-int
-el_parse (EditLine *, int, const char **)
-{
- assert( !"Not implemented!" );
- return 0;
-}
-
-int
-el_get (EditLine *el, int code, ...)
-{
- switch ( code )
- {
- case ( EL_CLIENTDATA ):
- {
- void **dout = (void**) GETARG( 0 );
- *dout = clientData;
- }
- break;
- default:
- assert( !"Not implemented!" );
- }
- return 0;
-}
-
-int
-el_source (EditLine *el, const char *file)
-{
- // init edit line by reading the contents of 'file'
- // nothing to do here on windows...
- return 0;
-}
-
-void
-el_resize (EditLine *)
-{
- assert( !"Not implemented!" );
-}
-
-const LineInfo *
-el_line (EditLine *el)
-{
- assert( !"Not implemented!" );
- return 0;
-}
-
-int
-el_insertstr (EditLine *, const char *)
-{
- assert( !"Not implemented!" );
- return 0;
-}
-
-void
-el_deletestr (EditLine *, int)
-{
- assert( !"Not implemented!" );
-}
-
-History *
-history_init (void)
-{
- // return dummy handle
- return (History*) -1;
-}
-
-void
-history_end (History *)
-{
- assert( !"Not implemented!" );
-}
-
-int
-history (History *, HistEvent *, int op, ...)
-{
- // perform operation 'op' on the history list with optional argumetns as needed by
- // the operation.
- return 0;
-}
-
-#endif
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