started process-win.c

1 files changed, 62 insertions, 0 deletions

diff --git a/process-win.c b/process-win.c
new file mode 100644
index 0000000..a2f97d4
--- /dev/null
+++ b/process-win.c
@@ -0,0 +1,62 @@
+#include "process.h"
+
+struct Process {
+	HANDLE pipe_read, pipe_write;
+	PROCESS_INFORMATION process_info;
+};
+
+bool process_exec(Process *process, char const *program, char **argv) {
+	// thanks to https://stackoverflow.com/a/35658917
+	bool success = false;
+	memset(process, 0, sizeof *process);
+	HANDLE pipe_read, pipe_write;
+	SECURITY_ATTRIBUTES security_attrs = {sizeof(SECURITY_ATTRIBUTES)};
+	security_attrs.bInheritHandle = TRUE;
+	if (CreatePipe(&pipe_read, &pipe_write, &security_attrs, 0)) {
+		STARTUPINFOA startup = {sizeof(STARTUPINFOA)};
+		startup.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
+		startup.hStdOutput = pipe_write;
+		startup.hStdError = pipe_write;
+		startup.wShowWindow = SW_HIDE;
+		
+		// fuckin windows
+		char command_line[4096];
+		strbuf_cpy(command_line, program);
+		strbuf_catf(command_line, " ");
+		for (int i = 0; argv[i]; ++i) {
+			strbuf_catf(command_line, "%s ", argv[i]);
+		}
+		
+		if (CreateProcessA(NULL, command_line, NULL, NULL, TRUE, CREATE_NEW_CONSOLE,
+			NULL, NULL, &startup, &process->process_info)) {
+			process->pipe_read = pipe_read;
+			process->pipe_write = pipe_write;
+			success = true;
+		}
+		if (!success) {
+			CloseHandle(pipe_read);
+			CloseHandle(pipe_write);
+		}
+	}
+	return success;
+}
+
+long long process_read(Process *process, char *data, size_t size) {
+	DWORD bytes_read = 0, bytes_avail = 0, bytes_left = 0;
+	if (PeekNamedPipe(process->pipe_read, data, (DWORD)size, &bytes_read, &bytes_avail, &bytes_left)) {
+		if (bytes_read == 0)
+			return -1;
+		else
+			return bytes_read;
+	} else {
+		return -2;	
+	}
+}
+
+void process_kill(Process *process) {
+	// @TODO: kill process
+	CloseHandle(process->pipe_read);
+	CloseHandle(process->pipe_write);
+	CloseHandle(process->process_info.hProcess);
+	CloseHandle(process->process_info.hThread);
+}
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