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notepad: Allow user to choose which encoding to open and save files in.

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This commit is contained in:
Alexander Scott-Johns 2009-06-29 23:50:39 +01:00 committed by Alexandre Julliard
parent 080cc90992
commit 67766392bf
6 changed files with 175 additions and 16 deletions
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10
programs/notepad/En.rc
View File

@ -93,6 +93,14 @@ PUSHBUTTON "Cancel", IDCANCEL, 180, 21, 40, 15, WS_TABSTOP
PUSHBUTTON "&Help", IDHELP, 180, 39, 40, 15, WS_TABSTOP
}
IDD_OFN_TEMPLATE DIALOG DISCARDABLE 50,50,300,15
STYLE DS_3DLOOK | DS_CONTROL | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_BORDER
FONT 8, "MS Shell Dlg"
BEGIN
LTEXT "Encoding:", -1, 5,0, 50,12
COMBOBOX IDC_OFN_ENCCOMBO, 53,0, 156,48, WS_CHILD | WS_VSCROLL | CBS_DROPDOWNLIST
END
STRINGTABLE DISCARDABLE
{
STRING_PAGESETUP_HEADERVALUE, "&f"
@ -121,4 +129,6 @@ STRING_OUT_OF_MEMORY, "Not enough memory to complete this \
task.\nClose one or more applications to increase the amount of\nfree \
memory."
STRING_UNICODE_LE, "Unicode (UTF-16)"
STRING_UNICODE_BE, "Unicode (UTF-16 big-endian)"
}

153
programs/notepad/dialog.c
View File

@ -45,6 +45,28 @@ static inline void byteswap_wide_string(LPWSTR str, UINT num)
for (i = 0; i < num; i++) str[i] = RtlUshortByteSwap(str[i]);
}
static void load_encoding_name(ENCODING enc, WCHAR* buffer, int length)
{
switch (enc)
{
case ENCODING_UTF16LE:
LoadStringW(Globals.hInstance, STRING_UNICODE_LE, buffer, length);
break;
case ENCODING_UTF16BE:
LoadStringW(Globals.hInstance, STRING_UNICODE_BE, buffer, length);
break;
default:
{
CPINFOEXW cpi;
GetCPInfoExW((enc==ENCODING_UTF8) ? CP_UTF8 : CP_ACP, 0, &cpi);
lstrcpynW(buffer, cpi.CodePageName, length);
break;
}
}
}
VOID ShowLastError(void)
{
DWORD error = GetLastError();
@ -286,14 +308,13 @@ static BOOL SetWindowTextUtf8(HWND hwnd, LPCSTR lpTextInUtf8)
return ret;
}
void DoOpenFile(LPCWSTR szFileName)
void DoOpenFile(LPCWSTR szFileName, ENCODING enc)
{
static const WCHAR dotlog[] = { '.','L','O','G',0 };
HANDLE hFile;
LPSTR pTemp;
DWORD size;
DWORD dwNumRead;
ENCODING enc;
BOOL succeeded;
WCHAR log[5];
@ -340,7 +361,18 @@ void DoOpenFile(LPCWSTR szFileName)
pTemp[size] = 0; /* make sure it's (char)'\0'-terminated */
pTemp[size+1] = 0; /* make sure it's (WCHAR)'\0'-terminated */
enc = detect_encoding_of_buffer(pTemp, size);
if (enc == ENCODING_AUTO)
enc = detect_encoding_of_buffer(pTemp, size);
else if (size >= 2 && (enc==ENCODING_UTF16LE || enc==ENCODING_UTF16BE))
{
/* If UTF-16 (BE or LE) is selected, and there is a UTF-16 BOM,
* override the selection (like native Notepad).
*/
if ((BYTE)pTemp[0] == 0xff && (BYTE)pTemp[1] == 0xfe)
enc = ENCODING_UTF16LE;
else if ((BYTE)pTemp[0] == 0xfe && (BYTE)pTemp[1] == 0xff)
enc = ENCODING_UTF16BE;
}
/* SetWindowTextUtf8 and SetWindowTextA try to allocate memory, so we
* check if they succeed.
@ -413,6 +445,97 @@ VOID DIALOG_FileNew(VOID)
}
}
/* Used to detect encoding of files selected in Open dialog.
* Returns ENCODING_AUTO if file can't be read, etc.
*/
static ENCODING detect_encoding_of_file(LPCWSTR szFileName)
{
DWORD size;
HANDLE hFile = CreateFileW(szFileName, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile == INVALID_HANDLE_VALUE)
return ENCODING_AUTO;
size = GetFileSize(hFile, NULL);
if (size == INVALID_FILE_SIZE)
{
CloseHandle(hFile);
return ENCODING_AUTO;
}
else
{
DWORD dwNumRead;
BYTE buffer[MAX_STRING_LEN];
if (!ReadFile(hFile, buffer, min(size, sizeof(buffer)), &dwNumRead, NULL))
{
CloseHandle(hFile);
return ENCODING_AUTO;
}
CloseHandle(hFile);
return detect_encoding_of_buffer(buffer, dwNumRead);
}
}
static UINT_PTR CALLBACK OfnHookProc(HWND hdlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
static HWND hEncCombo;
switch (uMsg)
{
case WM_INITDIALOG:
{
ENCODING enc;
hEncCombo = GetDlgItem(hdlg, IDC_OFN_ENCCOMBO);
for (enc = MIN_ENCODING; enc <= MAX_ENCODING; enc++)
{
WCHAR szEnc[MAX_STRING_LEN];
load_encoding_name(enc, szEnc, ARRAY_SIZE(szEnc));
SendMessageW(hEncCombo, CB_ADDSTRING, 0, (LPARAM)szEnc);
}
SendMessageW(hEncCombo, CB_SETCURSEL, (WPARAM)Globals.encOfnCombo, 0);
}
break;
case WM_COMMAND:
if (LOWORD(wParam) == IDC_OFN_ENCCOMBO &&
HIWORD(wParam) == CBN_SELCHANGE)
{
int index = SendMessageW(hEncCombo, CB_GETCURSEL, 0, 0);
Globals.encOfnCombo = index==CB_ERR ? ENCODING_ANSI : (ENCODING)index;
}
break;
case WM_NOTIFY:
switch (((OFNOTIFYW*)lParam)->hdr.code)
{
case CDN_SELCHANGE:
if (Globals.bOfnIsOpenDialog)
{
/* Check the start of the selected file for a BOM. */
ENCODING enc;
WCHAR szFileName[MAX_PATH];
SendMessageW(GetParent(hdlg), CDM_GETFILEPATH,
ARRAY_SIZE(szFileName), (LPARAM)szFileName);
enc = detect_encoding_of_file(szFileName);
if (enc != ENCODING_AUTO)
{
Globals.encOfnCombo = enc;
SendMessageW(hEncCombo, CB_SETCURSEL, (WPARAM)enc, 0);
}
}
break;
default:
break;
}
break;
default:
break;
}
return 0;
}
VOID DIALOG_FileOpen(VOID)
{
OPENFILENAMEW openfilename;
@ -433,13 +556,18 @@ VOID DIALOG_FileOpen(VOID)
openfilename.lpstrFile = szPath;
openfilename.nMaxFile = ARRAY_SIZE(szPath);
openfilename.lpstrInitialDir = szDir;
openfilename.Flags = OFN_FILEMUSTEXIST | OFN_PATHMUSTEXIST |
OFN_HIDEREADONLY | OFN_ENABLESIZING;
openfilename.Flags = OFN_ENABLETEMPLATE | OFN_ENABLEHOOK | OFN_EXPLORER |
OFN_FILEMUSTEXIST | OFN_PATHMUSTEXIST |
OFN_HIDEREADONLY | OFN_ENABLESIZING;
openfilename.lpfnHook = OfnHookProc;
openfilename.lpTemplateName = MAKEINTRESOURCEW(IDD_OFN_TEMPLATE);
openfilename.lpstrDefExt = szDefaultExt;
Globals.encOfnCombo = ENCODING_ANSI;
Globals.bOfnIsOpenDialog = TRUE;
if (GetOpenFileNameW(&openfilename))
DoOpenFile(openfilename.lpstrFile);
DoOpenFile(openfilename.lpstrFile, Globals.encOfnCombo);
}
@ -472,12 +600,19 @@ BOOL DIALOG_FileSaveAs(VOID)
saveas.lpstrFile = szPath;
saveas.nMaxFile = ARRAY_SIZE(szPath);
saveas.lpstrInitialDir = szDir;
saveas.Flags = OFN_PATHMUSTEXIST | OFN_OVERWRITEPROMPT |
OFN_HIDEREADONLY | OFN_ENABLESIZING;
saveas.Flags = OFN_ENABLETEMPLATE | OFN_ENABLEHOOK | OFN_EXPLORER |
OFN_PATHMUSTEXIST | OFN_OVERWRITEPROMPT |
OFN_HIDEREADONLY | OFN_ENABLESIZING;
saveas.lpfnHook = OfnHookProc;
saveas.lpTemplateName = MAKEINTRESOURCEW(IDD_OFN_TEMPLATE);
saveas.lpstrDefExt = szDefaultExt;
/* Preset encoding to what file was opened/saved last with. */
Globals.encOfnCombo = Globals.encFile;
Globals.bOfnIsOpenDialog = FALSE;
if (GetSaveFileNameW(&saveas)) {
SetFileNameAndEncoding(szPath, Globals.encFile);
SetFileNameAndEncoding(szPath, Globals.encOfnCombo);
UpdateWindowCaption();
DoSaveFile();
return TRUE;

2
programs/notepad/dialog.h
View File

@ -55,4 +55,4 @@ VOID ShowLastError(void);
void UpdateWindowCaption(void);
BOOL FileExists(LPCWSTR szFilename);
BOOL DoCloseFile(void);
void DoOpenFile(LPCWSTR szFileName);
void DoOpenFile(LPCWSTR szFileName, ENCODING enc);

4
programs/notepad/main.c
View File

@ -581,7 +581,7 @@ static LRESULT WINAPI NOTEPAD_WndProc(HWND hWnd, UINT msg, WPARAM wParam,
DragQueryFileW(hDrop, 0, szFileName, ARRAY_SIZE(szFileName));
DragFinish(hDrop);
DoOpenFile(szFileName);
DoOpenFile(szFileName, ENCODING_AUTO);
break;
}
@ -692,7 +692,7 @@ static void HandleCommandLine(LPWSTR cmdline)
if (file_exists)
{
DoOpenFile(file_name);
DoOpenFile(file_name, ENCODING_AUTO);
InvalidateRect(Globals.hMainWnd, NULL, FALSE);
if (opt_print)
DIALOG_FilePrint();

15
programs/notepad/main.h
View File

@ -25,14 +25,19 @@
#define MAX_STRING_LEN 255
/* Values are indexes of the items in the Encoding combobox. */
typedef enum
{
ENCODING_ANSI,
ENCODING_UTF16LE,
ENCODING_UTF16BE,
ENCODING_UTF8
ENCODING_AUTO = -1,
ENCODING_ANSI = 0,
ENCODING_UTF16LE = 1,
ENCODING_UTF16BE = 2,
ENCODING_UTF8 = 3
} ENCODING;
#define MIN_ENCODING 0
#define MAX_ENCODING 3
typedef struct
{
HANDLE hInstance;
@ -48,6 +53,8 @@ typedef struct
WCHAR szFileTitle[MAX_PATH];
ENCODING encFile;
WCHAR szFilter[2 * MAX_STRING_LEN + 100];
ENCODING encOfnCombo; /* Encoding selected in IDC_OFN_ENCCOMBO */
BOOL bOfnIsOpenDialog;
INT iMarginTop;
INT iMarginBottom;
INT iMarginLeft;

7
programs/notepad/notepad_res.h
View File

@ -84,3 +84,10 @@
#define STRING_NOTFOUND 0x17B
#define STRING_OUT_OF_MEMORY 0x17C
#define STRING_UNICODE_LE 0x180
#define STRING_UNICODE_BE 0x181
/* Open/Save As dialog template */
#define IDD_OFN_TEMPLATE 0x190
#define IDC_OFN_ENCCOMBO 0x191