Merge pull request #3927 from sethjackson/if-cscope

Windows: Bring back code branch for if_cscope

src/nvim/if_cscope.c

@@ -743,8 +743,16 @@ err_closing:
     (void)close(to_cs[1]);
     (void)close(from_cs[0]);
 #else
-  /* WIN32 */
-  /* Create pipes to communicate with cscope */
+  // Create pipes to communicate with cscope
+  int fd;
+  SECURITY_ATTRIBUTES sa;
+  PROCESS_INFORMATION pi;
+  BOOL pipe_stdin = FALSE, pipe_stdout = FALSE;  // NOLINT(readability/bool)
+  STARTUPINFO si;
+  HANDLE stdin_rd, stdout_rd;
+  HANDLE stdout_wr, stdin_wr;
+  BOOL created;
+
   sa.nLength = sizeof(SECURITY_ATTRIBUTES);
   sa.bInheritHandle = TRUE;
   sa.lpSecurityDescriptor = NULL;

src/nvim/if_cscope_defs.h

@@ -16,6 +16,7 @@
 # include <sys/types.h>         /* pid_t */
 #endif
 
+#include "nvim/os/os_defs.h"
 #include "nvim/os/fs_defs.h"
 
 #define CSCOPE_SUCCESS          0
@@ -50,7 +51,13 @@ typedef struct csi {
   char *          ppath;        /* path to prepend (the -P option) */
   char *          flags;        /* additional cscope flags/options (e.g, -p2) */
 #if defined(UNIX)
-  pid_t pid;                    /* PID of the connected cscope process. */
+  pid_t pid;                    // PID of the connected cscope process
+#else
+    DWORD         pid;          // PID of the connected cscope process
+    HANDLE        hProc;        // cscope process handle
+    DWORD         nVolume;      // Volume serial number, instead of st_dev
+    DWORD         nIndexHigh;   // st_ino has no meaning on Windows
+    DWORD         nIndexLow;
 #endif
   FileID file_id;
 

src/nvim/os/os_defs.h

@@ -57,6 +57,9 @@
 #if !defined(S_ISREG) && defined(S_IFREG)
 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 #endif
+#if !defined(S_ISLNK) && defined(S_IFLNK)
+# define S_IFLNK(m) (((m) & S_IFMT) == S_IFLNK)
+#endif
 #if !defined(S_ISBLK) && defined(S_IFBLK)
 # define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 #endif