From: Magnus Jacobsson <magnus.jacobsson@berotec.se>
Date: Sun, 20 Sep 2020 12:52:03 +0000 (+0200)
Subject: Add option -? for usage to Windows version of lneato
X-Git-Tag: 2.46.0~20^2^2~55^2~23
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3ed4b99b1678b8e5a8afac198a0a341c18a93a0c;p=graphviz

Add option -? for usage to Windows version of lneato
---

diff --git a/cmd/lneato/mswin32/lneato.c b/cmd/lneato/mswin32/lneato.c
index 1683b6516..553617a5b 100644
--- a/cmd/lneato/mswin32/lneato.c
+++ b/cmd/lneato/mswin32/lneato.c
@@ -18,6 +18,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <shellapi.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 
@@ -32,6 +33,8 @@ int PASCAL WinMain (HANDLE hInstance, HANDLE hPrevInstance,
     char cmd[256];
     char *path;
     char *s;
+    int argc;
+    LPWSTR *argv;
 
     shellpath = getenv ("PATH");
     if (!shellpath || !(path = buildpath ("lefty"))) {
@@ -43,6 +46,11 @@ int PASCAL WinMain (HANDLE hInstance, HANDLE hPrevInstance,
         if (!(path = buildpath ("lefty")))
             exit (1);
     }
+    argv = CommandLineToArgvW(lpCmdLine, &argc);
+    if (argc == 1 && strcmp(argv[0], "-?") == 0) {
+        fprintf(stderr, "usage: lneato [-V] [-lm (sync|async)] [-el (0|1)] <filename>\n");
+        exit(0);
+    }
     if (lpCmdLine[0] == 0)
         sprintf (cmd, "%s -e \"load('dotty.lefty');dotty.protogt.lserver='neato';dotty.simple(null);\"", path);
     else