[3/2] net: Add a WriteConsole() fall back so things still works on Windows if the output is redirected.
Francois Gouget
fgouget at free.fr
Wed Aug 3 12:44:16 CDT 2011
---
This follows the previous two patches and ensures net will still work
right on plain Windows when its output is redirected.
programs/net/net.c | 34 +++++++++++++++++++++++++++++-----
1 files changed, 29 insertions(+), 5 deletions(-)
diff --git a/programs/net/net.c b/programs/net/net.c
index 985150b..06174bb 100644
--- a/programs/net/net.c
+++ b/programs/net/net.c
@@ -25,18 +25,44 @@
#define NET_START 0001
#define NET_STOP 0002
+static int output_write(WCHAR* str, int len)
+{
+ DWORD ret, count;
+ ret = WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE), str, len, &count, NULL);
+ if (!ret)
+ {
+ DWORD lenA;
+ char* strA;
+
+ /* On Windows WriteConsoleW() fails if the output is redirected. So fall
+ * back to WriteFile(), assuming the console encoding is still the right
+ * one in that case.
+ */
+ lenA = WideCharToMultiByte(GetConsoleOutputCP(), 0, str, len,
+ NULL, 0, NULL, NULL);
+ strA = HeapAlloc(GetProcessHeap(), 0, lenA);
+ if (!strA)
+ return 0;
+
+ WideCharToMultiByte(GetConsoleOutputCP(), 0, str, len, strA, lenA,
+ NULL, NULL);
+ WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), strA, len, &count, FALSE);
+ HeapFree(GetProcessHeap(), 0, strA);
+ }
+ return count;
+}
+
static int output_string(int msg, ...)
{
WCHAR fmt[8192];
WCHAR str[8192];
int len;
- DWORD count;
va_list arguments;
LoadStringW(GetModuleHandleW(NULL), msg, fmt, sizeof(fmt));
va_start(arguments, msg);
len = vsprintfW(str, fmt, arguments);
- WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE), str, len, &count, NULL);
+ output_write(str, len);
va_end(arguments);
return 0;
}
@@ -48,9 +74,7 @@ static BOOL output_error_string(DWORD error)
FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_ALLOCATE_BUFFER,
NULL, error, 0, (LPWSTR)&pBuffer, 0, NULL))
{
- DWORD count;
- int len = lstrlenW(pBuffer);
- WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE), pBuffer, len, &count, NULL);
+ output_write(pBuffer, lstrlenW(pBuffer));
LocalFree(pBuffer);
return TRUE;
}
--
1.7.5.4
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