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Microsoft Windows NT Build 511 (SDK Final Release) 07-24-1993
/******************************************************************************\
* This is a part of the Microsoft Source Code Samples.
* Copyright (C) 1993 Microsoft Corporation.
* All rights reserved.
* This source code is only intended as a supplement to
* Microsoft Development Tools and/or WinHelp documentation.
* See these sources for detailed information regarding the
* Microsoft samples programs.
\******************************************************************************/
/****************************** Module Header *******************************
* Module Name: WINDIFF.C
*
* File and directory comparisions.
*
* Functions:
*
* windiff_UI()
* WinMain()
* windiff_usage()
* Poll()
* DoResize()
* AboutBox()
* DoPrint()
* FindNextChange()
* FindPrevChange()
* WriteProfileInt()
* ToOutline()
* ToMoved()
* do_editfile()
* do_editthread()
* SetStatus()
* SetNames()
* IsBusy()
* BusyError()
* StateToColour()
* SetSelection()
* do_gethdr()
* do_getprops()
* do_getdata()
* SvrClose()
* TableServer()
* wd_dirdialog()
* wd_copy()
* InitApplication()
* InitInstance()
* CreateTools()
* DeleteTools()
* MainWndProc()
* SetBusy()
* SetNotBusy()
* SetSelection()
* SetButtonText()
* ToExpand()
* ParseArgs()
* wd_initial()
*
* Comments:
*
* Compare two directories (including all files and subdirs). Look for names
* that are present in both (report all that are not). For files that
* are present in both, produce a line-by-line comparison of the differences
* between the two files (if any).
*
* Overview of Windiff internals - the whole program.
*
* Windiff is built from several modules (a "module" has a .h file
* which describes its interface and a .c file which implements it).
* Apart from THIS comment which tries to give an overview of the whole
* scheme of things, each module is as self-contained as possible.
* This is enforced by the use of opaque data types. Modules cannot
* see each others' internal data structures. Modules are abstract
* data types. The term "Module" (from Modula2) and "Class" (from C++)
* are used synonymously.
*
* Windiff - main program - parse arguments, put up main window,
* handle input, calling other modules as needed
* invoke table class to create the main display and
* service callbacks from the table class.
* Contains global flags for options (e.g. ignore_blanks)
* list - (in gutils) a generalised LIST of anything data type
* has full set of operations for insert, delete, join etc.
* line - a LINE is a numbered line of text. Information is kept to
* allow fast comparisons of LINEs. A LINE can hold a
* link to another LINE. The links are used to connect
* lines in one file to matching lines in the other file.
* file - a FILEDATA represents a file as a file name in the form
* of a DIRITEM and a LIST of LINEs
* scandir - a DIRITEM represents information about a file. (for
* instance its name, whether it has a local copy).
* compitem - a COMPITEM is a pair of files together with information
* on how they compare in the form of a breakdown of the
* files into a LIST of matching or non-matching sections.
* Either file can be absent. This module contains the
* file "contrast" algorithm used for the actual comparison
* tree (in gutils) A binary tree. Important because it is what
* gives the file comparison its speed as it makes it
* an "N log N" algorithm rather than "N squared"
* complist - a COMPLIST is the master data structure. It has a DIRLIST
* of the left hand files, a DIRLIST of the right hand files
* and a LIST of COMPITEMs. The left and right hand DIRLISTs
* are working data used to produce the COMPLIST. The LIST
* is displayed as the outline table. Any given COMPITEM can
* be displayed as an expanded item.
* section - a SECTION is a section of a file (first line, last line)
* and information as to what it matches in the other file.
* bar.c - the picture down the left of the screen
* has a WNDPROC.
* view - Although the COMPLIST is the master state, it doesn't do
* all the work itself. The data is actually displayed by
* the table class which is highly generalised. View
* owns a COMPLIST (and therefore calls upon the functions
* in complist to fill it and interrogate it) and calls
* upon (and is called back by) the functions in table to
* actually display it. Read about table in gutils.h
* table.c (in gutils) a highly generalised system for displaying
* data in rows and columns. The interface is in gutils.h.
* status.c (in gutils) the status line at the top. See gutils.h
*************************************************************************
*
* Overview of this file:
*
* We create a table window (gutils.dll) to show the files and the
* results of their comparisons. We create a COMPLIST object representing
* a list of files and their differences, and a VIEW object to map between
* the rows of the table window and the COMPLIST.
*
* This module is responsible for creating and managing the main window,
* placing the child windows (table, status window etc) within it, and
* handling all menu items. We maintain global option flags set by
* menu commands.
*
* Creating a COMPLIST creates a list of unmatched files, and of matching
* files that are compared with each other (these are COMPITEMS).
* The VIEW provides a mapping between rows on the screen, and items in
* the COMPLIST.
*
* This version tries to maintain a responsive user interface by
* creating worker threads to do long jobs. This potentially creates
* conflicts between the threads as they will both want to update common
* variables (for instance the UI thread may be changing the options to
* exclude identical files while the worker thread is adding in the
* results of new comparisons). Critical sections are used to manage
* the conflicts.
*
* The Edit options invoke an editor on a separate thread. This allows
* us to repaint our window and thereby allow the user to refer back to
* what he saw before invoking the editor. When he's finished editing,
* we would of course like to refresh things and if this is still on the
* separate thread it might clash. We avoid this clash by POSTing ourselves
* a (WM_COMMAND, IDM_UPDATE) message.
*
****************************************************************************/
#include <windows.h>
#include <shellapi.h>
#include <stdlib.h>
#include <commdlg.h>
#include <string.h>
#include "gutils.h"
#include "table.h"
#include "list.h"
#include "scandir.h" /* needed for file.h */
#include "file.h" /* needed for compitem.h */
#include "compitem.h" /* needed for view.h */
#include "complist.h"
#include "view.h"
#include "state.h"
#include "windiff.h"
#include "wdiffrc.h"
/*--constants and data types--------------------------------------------*/
int Version = 2;
int SubVersion = 01;
/* When we print the current table, we pass this id as the table id
* When we are queried for the properties of this table, we know they
* want the printing properties for the current view. We use this to
* select different fonts and colours for the printer.
*/
#define TABID_PRINTER 1
/*
* structure containing args passed to worker thread in initial
* case (executing command line instructions).
*/
typedef struct {
LPSTR first;
LPSTR second;
LPSTR savelist;
UINT saveopts;
VIEW view;
BOOL fDeep;
} THREADARGS, FAR * PTHREADARGS;
/* Structure containing all the arguments we'd like to give to do_editfile
Need a structure because CreateThread only allows for one argument.
*/
typedef struct {
VIEW view;
int option;
int selection;
} EDITARGS, FAR * PEDITARGS;
/*---- colour scheme------------------------------- */
/* outline */
DWORD rgb_outlinehi = RGB(255, 0, 0); /* hilighted files in outline mode */
/* expand view */
DWORD rgb_leftfore = RGB( 0, 0, 0); /* foregrnd for left lines */
DWORD rgb_leftback = RGB(255, 0, 0); /* backgrnd for left lines */
DWORD rgb_rightfore = RGB( 0, 0, 0); /* foregrnd for right lines*/
DWORD rgb_rightback = RGB(255, 255, 0); /* backgrnd for right lines*/
/* moved lines */
DWORD rgb_mleftfore = RGB( 0, 0, 128); /* foregrnd for moved-left */
DWORD rgb_mleftback = RGB(255, 0, 0); /* backgrnd for moved-left */
DWORD rgb_mrightfore = RGB( 0, 0, 255); /* foregrnd for moved-right*/
DWORD rgb_mrightback = RGB(255, 255, 0); /* backgrnd for moved-right*/
/* bar window */
DWORD rgb_barleft = RGB(255, 0, 0); /* bar sections in left only */
DWORD rgb_barright = RGB(255, 255, 0); /* bar sections in right only */
DWORD rgb_barcurrent = RGB( 0, 0, 255); /* current pos markers in bar */
/* module static data -------------------------------------------------*/
/* current value of window title */
char AppTitle[256];
HWND hwndClient; /* main window */
HWND hwndRCD; /* table window */
HWND hwndStatus; /* status bar across top */
HWND hwndBar; /* graphic of sections as vertical bars */
HACCEL haccel;
/* The status bar told us it should be this high. Rest of client area
* goes to the hwndBar and hwndRCD.
*/
int status_height;
HINSTANCE hInst; /* handle to current app instance */
HMENU hMenu; /* handle to menu for hwndClient */
int nMinMax = SW_SHOWNORMAL; /* default state of window normal */
/* The message sent to us as a callback by the table window needs to be
* registered - table_msgcode is the result of the RegisterMessage call
*/
UINT table_msgcode;
/* True if we are currently doing some scan or comparison.
* Must get critical section before checking/changing this (call
* SetBusy.
*/
BOOL fBusy = FALSE;
int selection = -1; /* selected row in table*/
/* Options for DisplayMode field indicating what is currently shown.
* We use this to know whether or not to show the graphic bar window.
*/
#define MODE_NULL 0 /* nothing displayed */
#define MODE_OUTLINE 1 /* a list of files displayed */
#define MODE_EXPAND 2 /* view is expanded view of one file */
int DisplayMode = MODE_NULL; /* indicates whether we are in expand mode */
VIEW current_view = NULL;
/* command line parameters */
extern int __argc;
extern char ** __argv;
BOOL bAbort = FALSE; /* set to request abort of current operation */
char editor_cmdline[256] = "notepad %p"; /* editor cmdline */
/* slick version is "s %p -#%l" */
/* app-wide global data --------------------------------------------- */
/* Handle returned from gmem_init - we use this for all memory allocations */
HANDLE hHeap;
/* Current state of menu options */
int line_numbers = IDM_LNRS;
int expand_mode = IDM_BOTHFILES;
int outline_include = INCLUDE_LEFTONLY|INCLUDE_RIGHTONLY|INCLUDE_SAME|INCLUDE_DIFFER;
BOOL ignore_blanks = TRUE;
BOOL picture_mode = TRUE;
/* function prototypes ---------------------------------------------*/
BOOL InitApplication(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow);
void CreateTools(void);
void DeleteTools(void);
long APIENTRY MainWndProc(HWND hWnd, UINT message, UINT wParam, LONG lParam);
BOOL SetBusy(void);
void SetNotBusy(void);
void SetSelection(long rownr);
void SetButtonText(LPSTR cmd);
BOOL ToExpand(HWND hwnd);
void ParseArgs(int argc, char ** argv);
DWORD wd_initial(LPVOID arg);
static HANDLE ghThread = NULL;
static DWORD gdwMainThreadId; /* threadid of main (user interface) thread
initialised in winmain(), thereafter constant.
See windiff_UI()
*/
/***************************************************************************
* Function: windiff_UI
*
* Purpose:
*
* If you are about to put up a dialog box or in fact process input in any way
* on any thread other than the main thread - or if you MIGHT be on a thread other
* than the main thread, then you must call this function with TRUE before doing
* it and with FALSE immediately afterwards. Otherwise you will get one of a
* number of flavours of not-very-responsiveness
*/
void windiff_UI(BOOL bAttach)
{
DWORD dwThreadId = GetCurrentThreadId();
if (dwThreadId==gdwMainThreadId) return;
if (bAttach) GetDesktopWindow();
AttachThreadInput(dwThreadId, gdwMainThreadId, bAttach);
} /* windiff_UI */
/***************************************************************************
* Function: WinMain
*
* Purpose:
*
* Main entry point. Register window classes, create windows,
* parse command line arguments and then perform a message loop
*/
int WINAPI
WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
MSG msg;
gdwMainThreadId = GetCurrentThreadId();
/* create any pens/brushes etc and read in profile defaults */
CreateTools();
/* init window class unless other instances running */
if (!hPrevInstance)
if (!InitApplication(hInstance))
return(FALSE);
/* init this instance - create all the windows */
if (!InitInstance(hInstance, nCmdShow))
return(FALSE);
ParseArgs(__argc, __argv);
/* message loop */
while(GetMessage(&msg, NULL, 0, 0)) {
if (!TranslateAccelerator(hwndClient, haccel, &msg)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (msg.wParam);
}
/***************************************************************************
* Function: InitApplication
*
* Purpose:
*
* Register window class for the main window and the bar window.
*/
BOOL
InitApplication(HINSTANCE hInstance)
{
WNDCLASS wc;
BOOL resp;
/* register the bar window class */
InitBarClass(hInstance);
wc.style = 0;
wc.lpfnWndProc = MainWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(hInstance, "WinDiff");
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = NULL;
wc.lpszClassName = "WinDiffViewerClass";
wc.lpszMenuName = NULL;
resp = RegisterClass(&wc);
return(resp);
}
/***************************************************************************
* Function: InitInstance
*
* Purpose:
*
* Create and show the windows
*/
BOOL
InitInstance(HINSTANCE hInstance, int nCmdShow)
{
RECT rect;
HANDLE hstatus;
int bar_width;
RECT childrc;
hInst = hInstance;
/* initialise a heap. we use this one heap throughout
* the app. for all memory requirements
*/
hHeap = gmem_init();
/* initialise the list package */
List_Init();
hMenu = LoadMenu(hInstance, "WinDiffMenu");
haccel = LoadAccelerators(hInstance, "WinDiffAccel");
/* create the main window */
hwndClient = CreateWindow("WinDiffViewerClass",
"WinDiff",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
hMenu,
hInstance,
NULL
);
if (!hwndClient) {
return(FALSE);
}
/* create 3 child windows, one status, one table and one bar
* Initially, the bar window is hidden and covered by the table.
*/
/* create a status bar window as
* a child of the main window.
*/
/* build a status struct for two labels and an abort button */
hstatus = StatusAlloc(3);
StatusAddItem(hstatus, 0, SF_STATIC, SF_LEFT|SF_VAR|SF_SZMIN, IDL_STATLAB, 14, NULL);
StatusAddItem(hstatus, 1, SF_BUTTON, SF_RIGHT|SF_RAISE, IDM_ABORT, 8,
"Exit");
StatusAddItem(hstatus, 2, SF_STATIC, SF_LOWER|SF_LEFT|SF_VAR,
IDL_NAMES, 60, NULL);
/* ask the status bar how high it should be for the controls
* we have chosen, and save this value for re-sizing.
*/
status_height = StatusHeight(hstatus);
/* create a window of this height */
GetClientRect(hwndClient, &rect);
childrc = rect;
childrc.bottom = status_height;
hwndStatus = StatusCreate(hInst, hwndClient, IDC_STATUS, &childrc,
hstatus);
/* layout constants are stated as percentages of the window width */
bar_width = (rect.right - rect.left) * BAR_WIN_WIDTH / 100;
/* create the table class covering all the remaining part of
* the main window
*/
hwndRCD = CreateWindow(TableClassName,
NULL,
WS_CHILD | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL,
0,
status_height,
(int)(rect.right - rect.left),
(int)(rect.bottom - status_height),
hwndClient,
(HANDLE) IDC_RCDISP1,
hInst,
NULL);
/* create a bar window as a child of the main window.
* this window remains hidden until we switch into MODE_EXPAND
*/
hwndBar = CreateWindow("BarClass",
NULL,
WS_CHILD | WS_VISIBLE,
0,
status_height,
bar_width,
(int)(rect.bottom - status_height),
hwndClient,
(HANDLE) IDC_BAR,
hInst,
NULL);
/* nMinMax indicates whether we are to be minimised on startup,
* on command line parameters
*/
ShowWindow(hwndBar, SW_HIDE);
if (GetProfileInt(APPNAME, "OutlineSaved", 0))
{
WINDOWPLACEMENT wp;
/* restore the previous expanded size and position */
wp.flags = 0;
wp.showCmd = GetProfileInt( APPNAME, "OutlineShowCmd",
SW_SHOWNORMAL);
wp.ptMaxPosition.x = GetProfileInt( APPNAME, "OutlineMaxX", 0);
wp.ptMaxPosition.y = GetProfileInt( APPNAME, "OutlineMaxY", 0);
wp.rcNormalPosition.left = (int)GetProfileInt( APPNAME, "OutlineNormLeft", (UINT)(-1));
wp.rcNormalPosition.top = (int)GetProfileInt( APPNAME, "OutlineNormTop", (UINT)(-1));
wp.rcNormalPosition.right = (int)GetProfileInt( APPNAME, "OutlineNormRight", (UINT)(-1));
wp.rcNormalPosition.bottom = (int)GetProfileInt( APPNAME, "OutlineNormBottom",(UINT)(-1));
SetWindowPlacement(hwndClient,&wp);
}
else ShowWindow(hwndClient, nMinMax);
UpdateWindow(hwndClient);
/* initialise busy flag and status line to show we are idle
* (ie not comparing or scanning)
*/
SetNotBusy();
return(TRUE);
} /* InitInstance */
/***************************************************************************
* Function: windiff_usage
*
* Purpose:
*
* Complain to command line users about poor syntax,
* will be replaced by proper help file.
*/
void
windiff_usage(LPSTR msg)
{
int retval;
if (msg==NULL)
msg = "windiff {-L} path1 {path2} {-s{slrd} savefile}";
retval = MessageBox(hwndClient,
msg,
"Windiff Usage", MB_ICONINFORMATION|MB_OKCANCEL);
if (retval == IDCANCEL) {
exit(1);
}
}
/***************************************************************************
* Function: ParseArgs
*
* Purpose:
*
* Parse command line arguments
*
* The user can give one or two paths. If only one, we assume the second
* is '.' for the current directory. If one of the two paths is a directory
* and the other a file, we compare a file of the same name in the two dirs.
*
* The command -s filename causes the outline list to be written to a file
* and then the program exits. -s{slrd} filename allows selection of which
* files are written out; by default, we assume -sld for files left and different.
*
* -T means tree. Go deep.
*
* The default is Deep, -L overrides and implies shallow, -T overrides -L
*/
void
ParseArgs(int argc, char ** argv)
{
int i;
LPSTR chp;
PTHREADARGS ta;
DWORD threadid;
/* thread args can't be on the stack since the stack will change
* before the thread completes execution
*/
ta = (PTHREADARGS) gmem_get(hHeap, sizeof(THREADARGS));
ta->first = NULL;
ta->second = NULL;
ta->savelist = NULL;
ta->saveopts = 0;
ta->fDeep = FALSE; /* No -T option seen yet */
for (i = 1; i < argc; i++) {
/* is this an option ? */
if ((argv[i][0] == '-') || (argv[i][0] == '/')) {
switch(argv[i][1]) {
case 's':
case 'S':
/* read letters for the save option: s,l,r,d */
for(chp = &argv[i][2]; *chp != '\0'; chp++) {
switch(*chp) {
case 's':
case 'S':
ta->saveopts |= INCLUDE_SAME;
break;
case 'l':
case 'L':
ta->saveopts |= INCLUDE_DIFFER;
break;
case 'r':
case 'R':
ta->saveopts |= INCLUDE_LEFTONLY;
break;
case 'd':
case 'D':
ta->saveopts |= INCLUDE_RIGHTONLY;
break;
default:
windiff_usage(NULL);
return;
}
}
if (ta->saveopts == 0) {
/* default to left and differ */
ta->saveopts = (INCLUDE_LEFTONLY) | (INCLUDE_DIFFER);
}
ta->savelist = argv[++i];
break;
case 't':
case 'T':
ta->fDeep = TRUE;
break;
default:
windiff_usage(NULL);
return;
}
} else {
if (ta->first == NULL) {
ta->first = argv[i];
} else {
ta->second = argv[i];
}
}
}
/* set the correct depth */
if (ta->fDeep)
; /* explicitly set -- leave it alone */
else ta->fDeep = TRUE; /* global default */
/* any paths to scan ? */
if (ta->first == NULL) {
return;
}
if (ta->second == NULL) {
ta->second = ".";
}
SetBusy();
/* minimise the window if -s flag given */
if (ta->savelist != NULL) {
ShowWindow(hwndClient, SW_MINIMIZE);
}
/* make an empty view */
current_view = view_new(hwndRCD);
DisplayMode = MODE_OUTLINE;
ta->view = current_view;
/* attempt to create a worker thread */
ghThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)wd_initial, (LPVOID) ta,
0, &threadid);
if (ghThread == NULL)
{
wd_initial( (LPVOID) ta);
}
} /* ParseArgs */
/***************************************************************************
* Function: CreateTools
*
* Purpose:
*
* Create any pens/brushes, and read defaults
* from the profile file for menu settings etc.
*/
void
CreateTools(void)
{
/* standard message that table class sends us for
* notifications and queries.
*/
table_msgcode = RegisterWindowMessage(TableMessage);
line_numbers = GetProfileInt(APPNAME, "LineNumbers", line_numbers);
outline_include = GetProfileInt(APPNAME, "FileInclude", outline_include);
ignore_blanks = GetProfileInt(APPNAME, "Blanks", ignore_blanks);
picture_mode = GetProfileInt(APPNAME, "Picture", picture_mode);
GetProfileString(APPNAME, "Editor", editor_cmdline, (LPTSTR)editor_cmdline,
sizeof(editor_cmdline));
InitializeCriticalSection(&CSWindiff);
}
/***************************************************************************
* Function: DeleteTools
*
* Purpose:
*
* Delete any pens or brushes that were created in CreateTools
*/
void
DeleteTools(void)
{
DeleteCriticalSection(&CSWindiff);
}
/***************************************************************************
* Function:
*
* Purpose:
*
* Check whether we have had an abort request (IDM_ABORT), and
* return TRUE if abort requested, otherwise FALSE
*/
BOOL
Poll(void)
{
return(bAbort);
}
/***************************************************************************
* Function: DoResize
*
* Purpose:
*
* Position child windows on a resize of the main window
*/
void
DoResize(HWND hWnd)
{
RECT rc;
int bar_width;
GetClientRect(hWnd, &rc);
MoveWindow(hwndStatus, 0, 0, rc.right - rc.left, status_height, TRUE);
bar_width = (rc.right - rc.left) * BAR_WIN_WIDTH / 100;
/* bar window is hidden unless in expand mode */
if ((DisplayMode == MODE_EXPAND) && (picture_mode)) {
ShowWindow(hwndBar, SW_SHOW);
MoveWindow(hwndBar, 0, status_height,
bar_width, rc.bottom - status_height, TRUE);
MoveWindow(hwndRCD, bar_width, status_height,
(rc.right - rc.left) - bar_width,
rc.bottom - status_height, TRUE);
} else {
MoveWindow(hwndRCD, 0, status_height, (rc.right - rc.left),
rc.bottom - status_height, TRUE);
ShowWindow(hwndBar, SW_HIDE);
}
}
/***************************************************************************
* Function: AboutBox
*
* Purpose:
*
* Standard processing for About box.
*/
int APIENTRY
AboutBox(HWND hDlg, unsigned message, UINT wParam, LONG lParam)
{
char ch[256];
switch (message) {
case WM_INITDIALOG:
wsprintf((LPTSTR)ch, "%d.%02d", Version, SubVersion);
SetDlgItemText(hDlg, IDD_VERSION, ch);
return(TRUE);
case WM_COMMAND:
switch (GET_WM_COMMAND_ID(wParam, lParam)) {
case IDOK:
EndDialog(hDlg, 0);
return(TRUE);
}
break;
}
return(FALSE);
}
/* -- menu commands ---------------------------------------------------*/
/***************************************************************************
* Function: DoPrint
*
* Purpose:
*
* Print the current view
*/
void
DoPrint(void)
{
Title head, foot;
PrintContext context;
/* print context contains the header and footer. Use the
* default margins and printer selection
*/
/* we set the table id to be TABID_PRINTER. When the table calls
* back to get text and properties, we use this to indicate
* that the table refered to is the 'current_view', but in print
* mode, and thus we will use different colours/fonts.
*/
context.head = &head;
context.foot = &foot;
context.margin = NULL;
context.pd = NULL;
context.id = TABID_PRINTER;
/* header is filenames or just WinDiff if no names known*/
if (strlen(AppTitle) > 0) {
head.ptext = AppTitle;
} else {
head.ptext = "WinDiff";
}
/* header is centred, footer is right-aligned and
* consists of the page number
*/
head.props.valid = P_ALIGN;
head.props.alignment = P_CENTRE;
foot.ptext = "Page # of $";
foot.props.valid = P_ALIGN;
foot.props.alignment = P_RIGHT;
SendMessage(hwndRCD, TM_PRINT, 0, (DWORD) (LPSTR) &context);
}
/***************************************************************************
* Function: FindNextChange
*
* Purpose:
*
* Find the next line in the current view that is
* not STATE_SAME. Start from the current selection, if valid, or
* from the top of the window if no selection.
*
*/
BOOL
FindNextChange(void)
{
long row;
/* start from the selection or top of the window if no selection */
if (selection >= 0) {
row = selection + 1;
} else {
row = (int) SendMessage(hwndRCD, TM_TOPROW, FALSE, 0);
}
/* find the next 'interesting' line */
row = view_findchange(current_view, row, TRUE);
if (row >= 0) {
SetSelection(row);
return(TRUE);
} else {
windiff_UI(TRUE);
MessageBox(hwndClient, "No More Changes", "Windiff",
MB_ICONINFORMATION|MB_OK);
windiff_UI(FALSE);
return(FALSE);
}
}
/***************************************************************************
* Function: FindPrevChange
*
* Purpose:
*
* Find the previous line in the current view that is not STATE_SAME
*/
BOOL
FindPrevChange(void)
{
long row;
/* start from the selection or top of window if no selection */
if (selection >= 0) {
row = selection - 1;
} else {
row = (int) SendMessage(hwndRCD, TM_TOPROW, FALSE, 0);
}
/* find the previous 'interesting' line */
row = view_findchange(current_view, row, FALSE);
if (row >= 0) {
SetSelection(row);
return(TRUE);
} else {
windiff_UI(TRUE);
MessageBox(hwndClient, "No Previous Changes", "Windiff",
MB_ICONINFORMATION|MB_OK);
windiff_UI(FALSE);
return(FALSE);
}
}
/***************************************************************************
* Function: WriteProfileInt
*
*/
BOOL WriteProfileInt(LPSTR AppName, LPSTR Key, int Int)
{ char Str[40];
wsprintf((LPTSTR)Str, "%d", Int);
return WriteProfileString(AppName, Key, Str);
} /* WriteProfileInt */
/***************************************************************************
* Function: ToExpand
*
* Purpose:
*
* Switch to expand view of the selected line
*/
BOOL
ToExpand(HWND hwnd)
{
if (selection < 0) {
return(FALSE);
}
if (!view_isexpanded(current_view)) {
/* save the current outline size and position */
WINDOWPLACEMENT wp;
if (GetWindowPlacement(hwndClient,&wp)) {
WriteProfileInt(APPNAME, "OutlineShowCmd", wp.showCmd);
WriteProfileInt(APPNAME, "OutlineMaxX", wp.ptMaxPosition.x);
WriteProfileInt(APPNAME, "OutlineMaxY", wp.ptMaxPosition.y);
WriteProfileInt(APPNAME, "OutlineNormLeft", wp.rcNormalPosition.left);
WriteProfileInt(APPNAME, "OutlineNormTop", wp.rcNormalPosition.top);
WriteProfileInt(APPNAME, "OutlineNormRight", wp.rcNormalPosition.right);
WriteProfileInt(APPNAME, "OutlineNormBottom", wp.rcNormalPosition.bottom);
WriteProfileInt(APPNAME, "OutlineSaved", 1);
}
/* restore the previous expanded size and position, if any */
if (GetProfileInt(APPNAME, "ExpandedSaved", 0)) {
wp.flags = 0;
wp.showCmd
= GetProfileInt( APPNAME, "ExpandShowCmd"
, SW_SHOWMAXIMIZED);
wp.ptMaxPosition.x
= GetProfileInt( APPNAME, "ExpandMaxX", 0);
wp.ptMaxPosition.y
= GetProfileInt( APPNAME, "ExpandMaxY", 0);
wp.rcNormalPosition.left
= GetProfileInt( APPNAME, "ExpandNormLeft"
, wp.rcNormalPosition.left);
wp.rcNormalPosition.top
= GetProfileInt( APPNAME, "ExpandNormTop"
, wp.rcNormalPosition.top);
wp.rcNormalPosition.right
= GetProfileInt( APPNAME, "ExpandNormRight"
, wp.rcNormalPosition.right);
wp.rcNormalPosition.bottom
= GetProfileInt( APPNAME, "ExpandNormBottom"
, wp.rcNormalPosition.bottom);
SetWindowPlacement(hwndClient,&wp);
}
else ShowWindow(hwndClient, SW_SHOWMAXIMIZED);
}
/*change the view mapping to expand mode */
if (view_expand(current_view, selection)) {
/* ok - we now have an expanded view - change status
* to show this
*/
DisplayMode = MODE_EXPAND;
/* resize to show the graphic bar picture */
DoResize(hwndClient);
/* change button,status text-if we are not still busy*/
if (!fBusy) {
/* the status field when we are expanded shows the
* tag field (normally the file name) for the
* item we are expanding
*/
SetStatus(view_getcurrenttag(current_view) );
SetButtonText("Outline");
}
return(TRUE);
}
return(FALSE);
} /* ToExpand */
/***************************************************************************
* Function: ToOutline
*
* Purpose:
*
* Switch back to outline view - showing just the list of file names.
*/
void
ToOutline(HWND hwnd)
{
if (view_isexpanded(current_view)) {
/* save the current expanded size and position */
WINDOWPLACEMENT wp;
if (GetWindowPlacement(hwndClient,&wp)) {
WriteProfileInt(APPNAME, "ExpandShowCmd", wp.showCmd);
WriteProfileInt(APPNAME, "ExpandMaxX", wp.ptMaxPosition.x);
WriteProfileInt(APPNAME, "ExpandMaxY", wp.ptMaxPosition.y);
WriteProfileInt(APPNAME, "ExpandNormLeft", wp.rcNormalPosition.left);
WriteProfileInt(APPNAME, "ExpandNormTop", wp.rcNormalPosition.top);
WriteProfileInt(APPNAME, "ExpandNormRight", wp.rcNormalPosition.right);
WriteProfileInt(APPNAME, "ExpandNormBottom", wp.rcNormalPosition.bottom);
WriteProfileInt(APPNAME, "ExpandedSaved", 1);
}
/* restore the previous expanded size and position, if any */
if (GetProfileInt(APPNAME, "OutlineSaved", 0)) {
wp.flags = 0;
wp.showCmd
= GetProfileInt( APPNAME, "OutlineShowCmd"
, SW_SHOWNORMAL);
wp.ptMaxPosition.x
= GetProfileInt( APPNAME, "OutlineMaxX", 0);
wp.ptMaxPosition.y
= GetProfileInt( APPNAME, "OutlineMaxY", 0);
wp.rcNormalPosition.left
= GetProfileInt( APPNAME, "OutlineNormLeft"
, wp.rcNormalPosition.left);
wp.rcNormalPosition.top
= GetProfileInt( APPNAME, "OutlineNormTop"
, wp.rcNormalPosition.top);
wp.rcNormalPosition.right
= GetProfileInt( APPNAME, "OutlineNormRight"
, wp.rcNormalPosition.right);
wp.rcNormalPosition.bottom
= GetProfileInt( APPNAME, "OutlineNormBottom"
, wp.rcNormalPosition.bottom);
SetWindowPlacement(hwndClient,&wp);
}
ShowWindow(hwndClient, SW_SHOWNORMAL);
}
DisplayMode = MODE_OUTLINE;
/* switch mapping back to outline view */
view_outline(current_view);
/* hide bar window and resize to cover */
DoResize(hwndClient);
/* change label on button */
if (!fBusy) {
SetButtonText("Expand");
SetStatus(NULL);
}
} /* ToOutline */
/***************************************************************************
* Function: ToMoved
*
* Purpose:
*
* If the user clicks on a MOVED line in expand mode, we jump to the
* other line. We return TRUE if this was possible, or FALSE otherwise.
*/
BOOL
ToMoved(HWND hwnd)
{
BOOL bIsLeft;
int linenr, state;
long i, total;
if (DisplayMode != MODE_EXPAND) {
return(FALSE);
}
if (selection < 0) {
return(FALSE);
}
state = view_getstate(current_view, selection);
if (state == STATE_MOVEDLEFT) {
bIsLeft = TRUE;
/* get the linenr of the other copy */
linenr = abs(view_getlinenr_right(current_view, selection));
} else if (state == STATE_MOVEDRIGHT) {
bIsLeft = FALSE;
/* get the linenr of the other copy */
linenr = abs(view_getlinenr_left(current_view, selection));
} else {
/* not a moved line - so we can't find another copy */
return(FALSE);
}
/* search the view for this line nr */
total = view_getrowcount(current_view);
for (i = 0; i < total; i++) {
if (bIsLeft) {
if (linenr == view_getlinenr_right(current_view, i)) {
/* found it */
SetSelection(i);
return(TRUE);
}
} else {
if (linenr == view_getlinenr_left(current_view, i)) {
SetSelection(i);
return(TRUE);
}
}
}
return(FALSE);
}
/***************************************************************************
* Function: do_editfile
*
* Purpose:
*
* Launch an editor on the current file (the file we are expanding, or
* in outline mode the selected row. Option allows selection of the
* left file, the right file or the composite view of this item.
* pe points to a packet of parameters that must be freed before returning.
* The return value is meaningless (just to conform to CreateThread).
*/
LONG
do_editfile(PEDITARGS pe)
{
VIEW view = pe->view;
int option = pe->option;
int selection = pe->selection;
COMPITEM item;
LPSTR fname;
char cmdline[256];
int currentline;
char * pOut = cmdline;
char * pIn = editor_cmdline;
STARTUPINFO si;
PROCESS_INFORMATION pi;
item = view_getitem(view, selection);
if (item == NULL) {
return -1;
}
fname = compitem_getfilename(item, option);
if ( 0 == fname )
{
windiff_UI(TRUE);
MessageBox(hwndClient, "File does not exist.",
"Windiff", MB_ICONSTOP|MB_OK);
windiff_UI(FALSE);
goto error;
}
switch ( option )
{
case CI_LEFT:
currentline = view_getlinenr_left( view,
selection > 0 ? selection : 1);
break;
case CI_RIGHT:
currentline = view_getlinenr_right( view,
selection > 0 ? selection : 1);
break;
default:
currentline = 1;
break;
}
while( *pIn )
{
switch( *pIn )
{
case '%':
pIn++;
switch ( *pIn )
{
case 'p':
lstrcpy( (LPTSTR)pOut, fname );
while ( *pOut )
pOut++;
break;
case 'l':
_ltoa( currentline, pOut, 10 );
while ( *pOut )
pOut++;
break;
default:
*pOut++ = *pIn;
break;
}
pIn++;
break;
default:
*pOut++ = *pIn++;
break;
}
}
/* Launch the process and waits for it to complete */
si.cb = sizeof(STARTUPINFO);
si.lpReserved = NULL;
si.lpReserved2 = NULL;
si.cbReserved2 = 0;
si.lpTitle = (LPSTR)cmdline;
si.lpDesktop = (LPTSTR)NULL;
si.dwFlags = STARTF_FORCEONFEEDBACK;
if (!CreateProcess(NULL,
cmdline,
NULL,
NULL,
FALSE,
NORMAL_PRIORITY_CLASS,
NULL,
(LPTSTR)NULL,
&si,
&pi)) {
windiff_UI(TRUE);
MessageBox(hwndClient, "Failed to launch editor",
"Windiff", MB_ICONSTOP|MB_OK);
windiff_UI(FALSE);
goto error;
}
/* wait for completion. */
WaitForSingleObject(pi.hProcess, INFINITE);
/* close process and thread handles */
CloseHandle(pi.hThread);
CloseHandle(pi.hProcess);
/* finished with the filename. deletes it if it was a temp. */
compitem_freefilename(item, option, fname);
/*
* refresh cached view always . A common trick is to edit the
* composite file and then save it as a new left or right file.
* Equally the user can edit the left and save as a new right.
*/
/* We want to force both files to be re-read, but it's not a terribly
* good idea to throw the lines away on this thread. Someone might
* be reading them on another thread!
*/
/* file_discardlines(compitem_getleftfile(item)) */
/* file_discardlines(compitem_getrightfile(item)) */
/* force the compare to be re-done */
PostMessage(hwndClient, WM_COMMAND, IDM_UPDATE, (LONG)item);
error:
gmem_free(hHeap, (LPSTR) pe, sizeof(EDITARGS));
return 0;
} /* do_editfile */
/***************************************************************************
* Function: do_editthread
*
* Purpose:
*
* Launch an editor on a separate thread. It will actually get a separate
* process, but we want our own thread in this process. This thread will
* wait until it's finished and then order up a refresh of the UI.
* Need to give it its parameters as a gmem allocated packet because
* it IS on a separate thread.
*/
void do_editthread(VIEW view, int option)
{
PEDITARGS pe;
HANDLE thread;
DWORD threadid;
pe = (PEDITARGS) gmem_get(hHeap, sizeof(EDITARGS));
pe->view = view;
pe->option = option;
pe->selection = selection;
thread = CreateThread( NULL
, 0
, (LPTHREAD_START_ROUTINE)do_editfile
, (LPVOID) pe
, 0
, &threadid
);
if (thread == NULL)
{
/* The createthread failed, do without the extra thread - just
* call the function synchronously
*/
do_editfile(pe);
}
else CloseHandle(thread);
} /* do_editthread */
/* status bar and busy flags --------------------------------------------*/
/***************************************************************************
* Function: SetButtonText
*
* Purpose:
*
* Set the Text on the statusbar button to reflect the current state
*/
void
SetButtonText(LPSTR cmd)
{
SendMessage(hwndStatus, SM_SETTEXT, IDM_ABORT, (DWORD) cmd);
}
/***************************************************************************
* Function: SetStatus
*
* Purpose:
*
* Set the status field (left-hand part) of the status bar.
*/
void
SetStatus(LPSTR cmd)
{
SendMessage(hwndStatus, SM_SETTEXT, IDL_STATLAB, (DWORD) cmd);
}
/***************************************************************************
* Function: SetNames
*
* Purpose:
*
* Set the names field - the central box in the status bar
*/
void
SetNames(LPSTR names)
{
SendMessage(hwndStatus, SM_SETTEXT, IDL_NAMES, (DWORD) names);
if (names == NULL) {
AppTitle[0] = '\0';
} else {
strncpy(AppTitle, names, sizeof(AppTitle));
}
}
/***************************************************************************
* Function: SetBusy
*
* Purpose:
*
* If we are not already busy, set the busy flag.
*
* Enter critical section first.
*/
BOOL
SetBusy(void)
{
HMENU hmenu;
WDEnter();
if (fBusy) {
WDLeave();
return(FALSE);
}
fBusy = TRUE;
SetStatus("Comparing...");
/* status also on window text, so that you can see even from
* the icon when the scan has finished
*/
SetWindowText(hwndClient, "WinDiff: scanning");
/* disable appropriate parts of menu */
hmenu = GetMenu(hwndClient);
EnableMenuItem(hmenu, IDM_FILE,MF_DISABLED|MF_GRAYED|MF_BYCOMMAND);
EnableMenuItem(hmenu, IDM_DIR,MF_DISABLED|MF_GRAYED|MF_BYCOMMAND);
EnableMenuItem(hmenu, IDM_PRINT,MF_DISABLED|MF_GRAYED|MF_BYCOMMAND);
/* enable abort only when busy */
EnableMenuItem(hmenu, IDM_ABORT,MF_ENABLED|MF_BYCOMMAND);
SetButtonText("Abort"); /* leave DisplayMode unchanged */
WDLeave();
return(TRUE);
} /* SetBusy */
/***************************************************************************
* Function: SetNotBusy
*
* Purpose:
*
* This function can be called from the worker thread.
* Thus we must not cause any SendMessage calls to windows
* owned by the main thread while holding the CritSec or we
* could cause deadlock.
*
* The critsec is only needed to protect the fBusy flag - so
* clear the busy flag last, and only get the crit sec as needed.
*/
void
SetNotBusy(void)
{
HMENU hmenu;
/* reset button and status bar (clearing out busy flags) */
if (current_view == NULL) {
SetButtonText("Exit");
SetStatus(NULL);
DisplayMode = MODE_NULL;
} else if (view_isexpanded(current_view)) {
SetButtonText("Outline");
SetStatus(view_getcurrenttag(current_view) );
DisplayMode = MODE_EXPAND;
} else {
SetButtonText("Expand");
SetStatus(NULL);
DisplayMode = MODE_OUTLINE;
}
SetWindowText(hwndClient, "WinDiff");
/* re-enable appropriate parts of menu */
hmenu = GetMenu(hwndClient);
EnableMenuItem(hmenu, IDM_FILE,MF_ENABLED|MF_BYCOMMAND);
EnableMenuItem(hmenu, IDM_DIR,MF_ENABLED|MF_BYCOMMAND);
EnableMenuItem(hmenu, IDM_PRINT,MF_ENABLED|MF_BYCOMMAND);
/* disable abort now no longer busy */
EnableMenuItem(hmenu, IDM_ABORT,MF_DISABLED|MF_GRAYED|MF_BYCOMMAND);
/* clear the busy flag, protected by critical section */
WDEnter();
fBusy = FALSE;
bAbort = FALSE;
if (ghThread!=NULL){
CloseHandle(ghThread);
ghThread = NULL;
}
WDLeave();
} /* SetNotBusy */
/***************************************************************************
* Function: IsBusy
*
* Purpose:
*
* Checks whether or not crit sec is open
*/
BOOL
IsBusy()
{
BOOL bOK;
WDEnter();
bOK = fBusy;
WDLeave();
return(bOK);
} /* IsBusy */
/***************************************************************************
* Function: BusyError
*
* Purpose:
*
* Puts up message box that system is busy.
*/
void
BusyError(void)
{
windiff_UI(TRUE);
MessageBox(hwndClient,
"Please wait for current operation to finish",
"WinDiff", MB_OK|MB_ICONSTOP);
windiff_UI(FALSE);
} /* BusyError */
/* --- colour scheme --------------------------------------------------- */
/***************************************************************************
* Function: StateToColour
*
* Purpose:
*
* Map the state given into a foreground and a background colour
* for states that are highlighted. Return P_FCOLOUR if the foreground
* colour (put in *foreground) is to be used, return P_FCOLOUR|P_BCOLOUR if
* both *foreground and *background are to be used, or 0 if the default
* colours are to be used.
*/
UINT
StateToColour(int state, int col, DWORD FAR * foreground, DWORD FAR * background)
{
switch (state) {
case STATE_DIFFER:
/* files that differ are picked out in a foreground highlight,
* with the default background
*/
*foreground = rgb_outlinehi;
return(P_FCOLOUR);
case STATE_LEFTONLY:
/* lines only in the left file */
*foreground = rgb_leftfore;
*background = rgb_leftback;
return(P_FCOLOUR|P_BCOLOUR);
case STATE_RIGHTONLY:
/* lines only in the right file */
*foreground = rgb_rightfore;
*background = rgb_rightback;
return(P_FCOLOUR|P_BCOLOUR);
case STATE_MOVEDLEFT:
/* displaced lines in both files - left file version */
*foreground = rgb_mleftfore;
*background = rgb_mleftback;
return(P_FCOLOUR|P_BCOLOUR);
case STATE_MOVEDRIGHT:
/* displaced lines in both files - right file version */
*foreground = rgb_mrightfore;
*background = rgb_mrightback;
return(P_FCOLOUR|P_BCOLOUR);
default:
/* no highlighting - default colours */
return(0);
}
}
/* table window communication routines ---------------------------------*/
/***************************************************************************
* Function: SetSelection
*
* Purpose:
*
* Set a given row as the selected row in the table window
*/
void
SetSelection(long rownr)
{
TableSelection select;
select.startrow = rownr;
select.startcell = 0;
select.nrows = 1;
select.ncells = 1;
SendMessage(hwndRCD, TM_SELECT, 0, (long) (LPSTR)&select);
}
/***************************************************************************
* Function: do_gethdr
*
* Purpose:
*
* Handle table class call back to get nr of rows and columns,
* and properties for the whole table.
* The 'table id' is either TABID_PRINTER - meaning we are
* printing the current_view, or it is the view to
* use for row/column nr information
*/
long
do_gethdr(HWND hwnd, lpTableHdr phdr)
{
VIEW view;
BOOL bIsPrinter = FALSE;
if (phdr->id == TABID_PRINTER) {
view = current_view;
bIsPrinter = TRUE;
} else {
view = (VIEW) phdr->id;
}
if (view == NULL) {
return(FALSE);
}
phdr->nrows = view_getrowcount(view);
/* three columns: line nr, tag and rest of line */
/*
* if IDM_NONRS (no line numbers) is selected, suppress the
* line-nr column entirely to save screen space
*/
if (line_numbers == IDM_NONRS) {
phdr->ncols = 2;
phdr->fixedcols = 0;
} else {
phdr->ncols = 3;
phdr->fixedcols = 1;
}
phdr->fixedrows = 0;
phdr->fixedselectable = FALSE;
phdr->hseparator = TRUE;
phdr->vseparator = TRUE;
phdr->selectmode = TM_ROW | TM_SINGLE;
/*
* find if we are in expand mode - ask for the item we are expanding.
*/
if (view_isexpanded(view) == TRUE) {
/* use focus rect as selection mode in expand mode
* so as not to interfere with background colours.
*/
phdr->selectmode |= TM_FOCUS;
} else {
/* use default solid inversion when possible as it is clearer.*/
phdr->selectmode |= TM_SOLID;
}
/* please send TQ_SCROLL notifications when the table is scrolled */
phdr->sendscroll = TRUE;
phdr->props.valid = 0;
return TRUE;
}
/***************************************************************************
* Function: do_getprops
*
* Purpose:
*
* Respond to table callback asking for the size and properties
* of each column. Table id is either TABID_PRINTER (meaning the
* current_view, for printing) or it is the view to be used.
*/
long
do_getprops(HWND hwnd, lpColPropsList propslist)
{
int i, cell;
BOOL bIsPrinter = FALSE;
VIEW view;
if (propslist->id == TABID_PRINTER) {
view = current_view;
bIsPrinter = TRUE;
} else {
view = (VIEW) propslist->id;
}
if (view == NULL) {
return(FALSE);
}
/* The table inteface is slightly confused here. we are not
* guaranteed which columns we are being asked about, so instead
* of just setting each column cols[0], cols[1] etc, we need
* to loop through, looking at each column in the table and
* seeing which it is.
*/
for (i = 0; i < propslist->ncols; i++) {
cell = i + propslist->startcol;
propslist->plist[i].props.valid = 0;
/* for all column widths, add on 1 for the NULL char. */
/*
* skip the line nr column if IDM_NONRS
*/
if (line_numbers == IDM_NONRS) {
cell++;
}
if (cell == 0) {
/* properties for line nr column */
propslist->plist[i].nchars = view_getwidth(view, 0)+1;
propslist->plist[i].props.valid |= P_ALIGN;
propslist->plist[i].props.alignment = P_CENTRE;
} else if (cell == 1) {
/* properties for tag field */
propslist->plist[i].nchars = view_getwidth(view, 1)+1;
propslist->plist[i].props.valid |= P_ALIGN;
propslist->plist[i].props.alignment = P_LEFT;
} else {
/* properties for main text column -
* use a fixed font unless printing (if
* printing, best to use the default font, because
* of resolution differences.
* add on 8 chars to the width to ensure that
* the width of lines beginning with tabs
* works out ok
*/
propslist->plist[i].nchars = view_getwidth(view, 2)+1;
propslist->plist[i].props.valid |= P_ALIGN;
propslist->plist[i].props.alignment = P_LEFT;
if (!bIsPrinter) {
propslist->plist[i].props.valid |= P_FONT;
propslist->plist[i].props.hFont =
GetStockObject(SYSTEM_FIXED_FONT);
}
}
}
return (TRUE);
}
/***************************************************************************
* Function: do_getdata
*
* Purpose:
*
* Respond to a table callback asking for the contents of individual cells.
* table id is either TABID_PRINTER, or it is a pointer to the view
* to use for data. If going to the printer, don't set the
* colours (stick to black and white).
*/
long
do_getdata(HWND hwnd, lpCellDataList cdlist)
{
int start, endcell, col, i;
lpCellData cd;
VIEW view;
LPSTR textp;
BOOL bIsPrinter = FALSE;
if (cdlist->id == TABID_PRINTER) {
view = current_view;
bIsPrinter = TRUE;
} else {
view = (VIEW) cdlist->id;
}
start = cdlist->startcell;
endcell = cdlist->ncells + start;
if (cdlist->row >= view_getrowcount(view)) {
return(FALSE);
}
for (i = start; i < endcell; i++) {
cd = &cdlist->plist[i - start];
/* skip the line number column if IDM_NONRS */
if (line_numbers == IDM_NONRS) {
col = i+1;
} else {
col = i;
}
/* set colour of text to mark out
* lines that are changed, if not printer - for the
* printer everything should stay in the default colours
*/
if (!bIsPrinter) {
/* convert the state of the requested row into a
* colour scheme. returns P_FCOLOUR and/or
* P_BCOLOUR if it sets either of the colours
*/
cd->props.valid |=
StateToColour(view_getstate(view, cdlist->row), col,
&cd->props.forecolour,
&cd->props.backcolour);
}
textp = view_gettext(view, cdlist->row, col);
if (cd->nchars != 0) {
if (textp == NULL) {
cd->ptext[0] = '\0';
} else {
strncpy(cd->ptext, textp, cd->nchars -1);
cd->ptext[cd->nchars - 1] = '\0';
}
}
}
return(TRUE);
}
/***************************************************************************
* Function: SvrClose
*
* Purpose:
*
* Table window has finished with this view. It can be deleted.
*/
void
SvrClose(void)
{
view_delete(current_view);
current_view = NULL;
/* hide picture - only visible when we are in MODE_EXPAND */
DisplayMode = MODE_NULL;
DoResize(hwndClient);
/* if we already busy when closing this view (ie
* we are in the process of starting a new scan,
* then leave the status bar alone, otherwise
* we should clean up the state of the status bar
*/
if (!fBusy) {
SetButtonText("Exit");
SetNames(NULL);
SetStatus(NULL);
}
} /* SvrClose */
/***************************************************************************
* Function: TableServer
*
* Purpose:
*
* Handle callbacks and notifications from the table class
*/
long
TableServer(HWND hwnd, UINT cmd, long lParam)
{
lpTableHdr phdr;
lpColPropsList proplist;
lpCellDataList cdlist;
lpTableSelection pselect;
switch(cmd) {
case TQ_GETSIZE:
/* get the nr of rows and cols in this table */
phdr = (lpTableHdr) lParam;
return(do_gethdr(hwnd, phdr));
case TQ_GETCOLPROPS:
/* get the size and properties of each column */
proplist = (lpColPropsList) lParam;
return (do_getprops(hwnd, proplist));
case TQ_GETDATA:
/* get the contents of individual cells */
cdlist = (lpCellDataList) lParam;
return (do_getdata(hwnd, cdlist));
case TQ_SELECT:
/* selection has changed */
case TQ_ENTER:
/* user has double-clicked or pressed enter */
pselect = (lpTableSelection) lParam;
/* store location for use in later search (IDM_FCHANGE) */
if (pselect->nrows < 1) {
selection = -1;
} else {
selection = (int) pselect->startrow;
if (cmd == TQ_ENTER) {
/* try to expand this row */
if (!ToExpand(hwnd)) {
/* expand failed - maybe this
* is a moved line- show the other
* copy
*/
ToMoved(hwnd);
}
}
}
break;
case TQ_CLOSE:
/* close this table - table class no longer needs data*/
SvrClose();
break;
case TQ_SCROLL:
/* notification that the rows visible in the window
* have changed -change the current position lines in
* the graphic bar view (the sections picture)
*/
if (picture_mode) {
BarDrawPosition(hwndBar, NULL, TRUE);
}
break;
default:
return(FALSE);
}
return(TRUE);
}
/***************************************************************************
* Function: wd_initial
*
* Purpose:
*
* Called on worker thread (not UI thread) to handle the work
* requested on the command line.
* arg is a pointer to a THREADARGS block allocated from gmem_get(hHeap). This
* needs to be freed before exiting.
*/
DWORD
wd_initial(LPVOID arg)
{
PTHREADARGS pta = (PTHREADARGS) arg;
COMPLIST cl;
/* build a complist from these args,
* and register with the view we have made
*/
cl = complist_args(pta->first, pta->second, pta->view, pta->fDeep);
if (cl == NULL) {
view_close(pta->view);
gmem_free(hHeap, (LPSTR) pta, sizeof(THREADARGS));
SetNotBusy();
return 0;
}
/* if savelist was selected, write out the list and exit */
if(pta->savelist != NULL) {
complist_savelist(cl, pta->savelist, pta->saveopts);
gmem_free(hHeap, (LPSTR) pta, sizeof(THREADARGS));
SetNotBusy();
exit(0);
}
/* if there was only one file, expand it */
if (view_getrowcount(pta->view) == 1) {
SetSelection(0);
ToExpand(hwndClient);
}
gmem_free(hHeap, (LPSTR) pta, sizeof(THREADARGS));
SetNotBusy();
return(0);
} /* wd_initial */
/***************************************************************************
* Function: wd_dirdialog
*
* Purpose:
*
* Called on worker thread (not UI thread) to handle a Dir request
*/
DWORD
wd_dirdialog(LPVOID arg)
{
VIEW view = (VIEW) arg;
/* make a COMPLIST using the directory dialog,
* and notify the view
*/
if (complist_dirdialog(view) == NULL) {
view_close(view);
}
/* all done! */
SetNotBusy();
return(0);
}
/***************************************************************************
* Function: wd_copy
*
* Purpose:
*
* Called on worker thread to do a copy-files operation
*/
DWORD
wd_copy(LPVOID arg)
{
VIEW view = (VIEW) arg;
complist_copyfiles(view_getcomplist(view), NULL, 0);
SetNotBusy();
return(0);
}
/***************************************************************************
* Function: MainWndProc
*
* Purpose:
*
* Window processing for main window
*/
long APIENTRY
MainWndProc(HWND hWnd, UINT message, UINT wParam, LONG lParam)
{
char str[32];
long ret;
DWORD threadid;
switch(message) {
case WM_CREATE:
/* initialise menu options to default/saved
* option settings
*/
CheckMenuItem(hMenu, IDM_INCSAME,
(outline_include & INCLUDE_SAME) ?
MF_CHECKED:MF_UNCHECKED);
CheckMenuItem(hMenu, IDM_INCLEFT,
(outline_include & INCLUDE_LEFTONLY) ?
MF_CHECKED:MF_UNCHECKED);
CheckMenuItem(hMenu, IDM_INCRIGHT,
(outline_include & INCLUDE_RIGHTONLY) ?
MF_CHECKED:MF_UNCHECKED);
CheckMenuItem(hMenu, IDM_INCDIFFER,
(outline_include & INCLUDE_DIFFER) ?
MF_CHECKED:MF_UNCHECKED);
CheckMenuItem(hMenu, line_numbers, MF_CHECKED);
CheckMenuItem(hMenu, expand_mode, MF_CHECKED);
CheckMenuItem(hMenu, IDM_IGNBLANKS,
ignore_blanks ? MF_CHECKED : MF_UNCHECKED);
CheckMenuItem(hMenu, IDM_PICTURE,
picture_mode ? MF_CHECKED : MF_UNCHECKED);
/* nothing currently displayed */
DisplayMode = MODE_NULL;
break;
case WM_COMMAND:
switch (GET_WM_COMMAND_ID(wParam, lParam)) {
case IDM_EXIT:
if (ghThread!=NULL) {
extern CRITICAL_SECTION CSView;
/* Stop any other thread from allocating things that we
want to free! See the threads DOGMA at the top
of this file.
*/
/* Because the thread that we are about to kill might be in
a critical section, we first grab them both. It is
essential that anyone else who ever does this, does
so in the same order!
*/
WDEnter();
EnterCriticalSection(&CSView);
TerminateThread(ghThread, 31);
CloseHandle(ghThread);
ghThread = NULL;
LeaveCriticalSection(&CSView);
WDLeave();
}
if (!view_isexpanded(current_view)) {
/* save the current outline size and position */
WINDOWPLACEMENT wp;
if (GetWindowPlacement(hwndClient,&wp)) {
WriteProfileInt(APPNAME, "OutlineShowCmd", wp.showCmd);
WriteProfileInt(APPNAME, "OutlineMaxX", wp.ptMaxPosition.x);
WriteProfileInt(APPNAME, "OutlineMaxY", wp.ptMaxPosition.y);
WriteProfileInt(APPNAME, "OutlineNormLeft", wp.rcNormalPosition.left);
WriteProfileInt(APPNAME, "OutlineNormTop", wp.rcNormalPosition.top);
WriteProfileInt(APPNAME, "OutlineNormRight", wp.rcNormalPosition.right);
WriteProfileInt(APPNAME, "OutlineNormBottom", wp.rcNormalPosition.bottom);
WriteProfileInt(APPNAME, "OutlineSaved", 1);
}
} else {
/* save the current expanded size and position */
WINDOWPLACEMENT wp;
if (GetWindowPlacement(hwndClient,&wp)) {
WriteProfileInt(APPNAME, "ExpandShowCmd", wp.showCmd);
WriteProfileInt(APPNAME, "ExpandMaxX", wp.ptMaxPosition.x);
WriteProfileInt(APPNAME, "ExpandMaxY", wp.ptMaxPosition.y);
WriteProfileInt(APPNAME, "ExpandNormLeft", wp.rcNormalPosition.left);
WriteProfileInt(APPNAME, "ExpandNormTop", wp.rcNormalPosition.top);
WriteProfileInt(APPNAME, "ExpandNormRight", wp.rcNormalPosition.right);
WriteProfileInt(APPNAME, "ExpandNormBottom", wp.rcNormalPosition.bottom);
WriteProfileInt(APPNAME, "ExpandedSaved", 1);
}
}
DestroyWindow(hWnd);
break;
case IDM_ABORT:
/* abort menu item, or status bar button.
* the status bar button text gives the appropriate
* action depending on our state - abort, outline
* or expand. But the command sent is always
* IDM_ABORT. Thus we need to check the state
* to see what to do. If we are busy, set the abort
* flag. If there is nothing to view,
* exit, otherwise switch outline<->expand
*/
if (IsBusy()) {
bAbort = TRUE;
SetStatus("Abort Pending");
} else if (DisplayMode == MODE_NULL) {
DestroyWindow(hWnd);
} else if (DisplayMode == MODE_EXPAND) {
ToOutline(hWnd);
} else {
ToExpand(hWnd);
}
break;
case IDM_FILE:
/* select two files and compare them */
if (SetBusy()) {
/* close the current view */
view_close(current_view);
/* make a new empty view */
current_view = view_new(hwndRCD);
/* make a COMPLIST using the files dialog,
* and notify the view
*/
if (complist_filedialog(current_view) == NULL) {
view_close(current_view);
}
/* all done! */
SetNotBusy();
} else {
BusyError();
}
break;
case IDM_DIR:
/* read two directory names, scan them and
* compare all the files and subdirs.
*/
if (SetBusy()) {
/* close the current view */
view_close(current_view);
/* make a new empty view */
current_view = view_new(hwndRCD);
ghThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)wd_dirdialog,
(LPVOID) current_view, 0, &threadid);
if (ghThread == NULL)
{
wd_dirdialog( (LPVOID) current_view);
}
} else {
BusyError();
}
break;
case IDM_CLOSE:
/* close the output list -
* discard all results so far
*/
if (!IsBusy()) {
view_close(current_view);
}
break;
case IDM_PRINT:
/* print the current view -
* either the outline list of filenames,
* or the currently expanded file.
*/
if (!IsBusy()) {
DoPrint();
} else {
BusyError();
}
break;
case IDM_TIME:
/* show time it took */
{ char msg[50];
DWORD tim;
if (IsBusy()) {
BusyError();
}
else{
tim = complist_querytime();
wsprintf((LPTSTR)msg, "%d.%03d seconds", tim/1000, tim%1000);
}
}
break;
case IDM_SAVELIST:
/* allow user to save list of same/different files
* to a text file. dialog box to give filename
* and select which types of file to include
*/
complist_savelist(view_getcomplist(current_view), NULL, 0);
break;
case IDM_COPYFILES:
/*
* copy files that are same/different to a new
* root directory. dialog box allows user
* to select new root and inclusion options
*/
if (current_view == NULL) {
MessageBox(hWnd,
"Please create a diff list first",
"WinDiff", MB_OK|MB_ICONSTOP);
break;
}
if (SetBusy()) {
ghThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)wd_copy,
(LPVOID) current_view, 0, &threadid);
if (ghThread == NULL)
{
wd_copy( (LPVOID) current_view);
}
} else {
BusyError();
}
break;
case IDM_ABOUT:
DialogBox( hInst, "About", hWnd, (DLGPROC)AboutBox);
break;
/* launch an editor on the current item - left, right or
* composite view
*/
case IDM_EDITLEFT:
do_editthread(current_view, CI_LEFT);
break;
case IDM_EDITRIGHT:
do_editthread(current_view, CI_RIGHT);
break;
case IDM_EDITCOMP:
do_editthread(current_view, CI_COMP);
break;
/* allow customisation of the editor command line */
case IDM_SETEDIT:
if (StringInput(editor_cmdline, sizeof(editor_cmdline),
"Please enter the editor command line",
"Windiff", editor_cmdline)) {
WriteProfileString(APPNAME, "Editor",
(LPCSTR)editor_cmdline);
}
break;
case IDM_LNRS:
case IDM_RNRS:
case IDM_NONRS:
/* option selects whether the line nrs displayed
* in expand mode are the line nrs in the left
* file, the right file or none
*/
CheckMenuItem(GetMenu(hWnd),
line_numbers, MF_UNCHECKED);
line_numbers = GET_WM_COMMAND_ID(wParam, lParam);
CheckMenuItem(GetMenu(hWnd), line_numbers, MF_CHECKED);
wsprintf((LPTSTR)str, "%d", line_numbers);
WriteProfileString(APPNAME, "LineNumbers", str);
/* change the display to show the line nr style
* chosen
*/
view_changeviewoptions(current_view);
break;
/*
* options selecting which files to include in the
* outline listing, based on their state
*/
case IDM_INCLEFT:
/* toggle flag in outline_include options */
outline_include ^= INCLUDE_LEFTONLY;
/* check/uncheck as necessary */
CheckMenuItem(hMenu, IDM_INCLEFT,
(outline_include & INCLUDE_LEFTONLY) ?
MF_CHECKED:MF_UNCHECKED);
wsprintf((LPTSTR)str, "%d", outline_include);
WriteProfileString(APPNAME, "FileInclude", str);
view_changeviewoptions(current_view);
break;
case IDM_INCRIGHT:
outline_include ^= INCLUDE_RIGHTONLY;
CheckMenuItem(hMenu, IDM_INCRIGHT,
(outline_include & INCLUDE_RIGHTONLY) ?
MF_CHECKED:MF_UNCHECKED);
wsprintf((LPTSTR)str, "%d", outline_include);
WriteProfileString(APPNAME, "FileInclude", str);
view_changeviewoptions(current_view);
break;
case IDM_INCSAME:
outline_include ^= INCLUDE_SAME;
CheckMenuItem(hMenu, IDM_INCSAME,
(outline_include & INCLUDE_SAME) ?
MF_CHECKED:MF_UNCHECKED);
wsprintf((LPTSTR)str, "%d", outline_include);
WriteProfileString(APPNAME, "FileInclude", str);
view_changeviewoptions(current_view);
break;
case IDM_INCDIFFER:
outline_include ^= INCLUDE_DIFFER;
CheckMenuItem(hMenu, IDM_INCDIFFER,
(outline_include & INCLUDE_DIFFER) ?
MF_CHECKED:MF_UNCHECKED);
wsprintf((LPTSTR)str, "%d", outline_include);
WriteProfileString(APPNAME, "FileInclude", str);
view_changeviewoptions(current_view);
break;
case IDM_UPDATE:
/* update the display. Options or files may have changed */
/* discard lines (thereby forcing re-read).
*/
file_discardlines(compitem_getleftfile( (COMPITEM)lParam) );
file_discardlines(compitem_getrightfile( (COMPITEM)lParam) );
view_changediffoptions(current_view);
/* force repaint of bar window */
InvalidateRect(hwndBar, NULL, TRUE);
break;
case IDM_LONLY:
case IDM_RONLY:
case IDM_BOTHFILES:
/* option selects whether the expanded file
* show is the combined file, or just one
* or other of the input files.
*
* if we are not in expand mode, this also
* causes us to expand the selection
*/
CheckMenuItem(GetMenu(hWnd), expand_mode, MF_UNCHECKED);
expand_mode = GET_WM_COMMAND_ID(wParam, lParam);
CheckMenuItem(GetMenu(hWnd), expand_mode, MF_CHECKED);
/* change the current view to show only the lines
* of the selected type.
*/
if (DisplayMode == MODE_OUTLINE) {
ToExpand(hWnd);
} else {
view_changeviewoptions(current_view);
}
break;
case IDM_IGNBLANKS:
/* if selected, ignore all spaces and tabs on
* comparison - expand view only: outline view
* will still show that 'text files differ'
*/
ignore_blanks = !ignore_blanks;
CheckMenuItem(hMenu, IDM_IGNBLANKS,
ignore_blanks? MF_CHECKED:MF_UNCHECKED);
wsprintf((LPTSTR)str, "%d", ignore_blanks);
WriteProfileString(APPNAME, "Blanks", str);
/* invalidate all diffs since we have
* changed diff options, and re-do and display the
* current diff if we are in expand mode.
*/
view_changediffoptions(current_view);
/* force repaint of bar window */
InvalidateRect(hwndBar, NULL, TRUE);
break;
case IDM_PICTURE:
/* do we show the bar picture in expand mode ? */
picture_mode = !picture_mode;
CheckMenuItem(hMenu, IDM_PICTURE,
picture_mode? MF_CHECKED:MF_UNCHECKED);
wsprintf((LPTSTR)str, "%d", picture_mode);
WriteProfileString(APPNAME, "Picture", str);
DoResize(hWnd);
break;
case IDM_EXPAND:
/* show the expanded view of the
* selected file
*/
if (current_view != NULL) {
ToExpand(hWnd);
}
break;
case IDM_OUTLINE:
/* return to the outline view (list of filenames) */
ToOutline(hWnd);
break;
case IDM_FCHANGE:
/* find the next line in the current view
* that is not the same in both files -
* in outline view, finds the next filename that
* is not identical
*/
FindNextChange();
break;
case IDM_FPCHANGE:
/* same as IDM_FCHANGE, but going backwards from
* current position
*/
FindPrevChange();
break;
}
break;
case WM_SIZE:
DoResize(hWnd);
break;
case WM_SETFOCUS:
/* set the focus on the table class so it can process
* page-up /pagedown keys etc.
*/
SetFocus(hwndRCD);
break;
case WM_KEYDOWN:
/* although the table window has the focus, he passes
* back to us any keys he doesn't understand
* We handle escape here to mean 'return to outline view'
*/
if (wParam == VK_ESCAPE) {
ToOutline(hWnd);
}
break;
case WM_CLOSE:
/* don't allow close when busy - process this message in
* order to ensure this
*/
if (IsBusy()) {
return(TRUE);
} else {
return(DefWindowProc(hWnd, message, wParam, lParam));
}
break;
case WM_DESTROY:
DeleteTools();
PostQuitMessage(0);
break;
case TM_CURRENTVIEW:
/* allow other people such as the bar window to query the
* current view
*/
return((DWORD) current_view);
default:
/* handle registered table messages */
if (message == table_msgcode) {
ret = TableServer(hWnd, wParam, lParam);
return(ret);
}
return(DefWindowProc(hWnd, message, wParam, lParam));
}
return(0);
}
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