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Empty arguments need to be quoted on Win32.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77913 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2009-08-02 20:41:09 +00:00
parent b36eb9df20
commit 9a0b574ba4
1 changed files with 9 additions and 3 deletions
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12
lib/System/Win32/Program.inc
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@ -109,6 +109,12 @@ static HANDLE RedirectIO(const Path *path, int fd, std::string* ErrMsg) {
DWORD cbJobObjectInfoLength);
#endif
/// ArgNeedsQuotes - Check whether argument needs to be quoted when calling
/// CreateProcess.
static bool ArgNeedsQuotes(const char *Str) {
return Str[0] == '\0' || strchr(Str, ' ') != 0;
}
bool
Program::Execute(const Path& path,
const char** args,
@ -124,13 +130,13 @@ Program::Execute(const Path& path,
// Windows wants a command line, not an array of args, to pass to the new
// process. We have to concatenate them all, while quoting the args that
// have embedded spaces.
// have embedded spaces (or are empty).
// First, determine the length of the command line.
unsigned len = 0;
for (unsigned i = 0; args[i]; i++) {
len += strlen(args[i]) + 1;
if (strchr(args[i], ' '))
if (ArgNeedsQuotes(args[i]))
len += 2;
}
@ -141,7 +147,7 @@ Program::Execute(const Path& path,
for (unsigned i = 0; args[i]; i++) {
const char *arg = args[i];
size_t len = strlen(arg);
bool needsQuoting = strchr(arg, ' ') != 0;
bool needsQuoting = ArgNeedsQuotes(arg);
if (needsQuoting)
*p++ = '"';
memcpy(p, arg, len);