From: Martin Mares <mj@ucw.cz>
Date: Sat, 17 Jul 2010 17:29:04 +0000 (+0200)
Subject: osdc: stdin can be used as an option argument
X-Git-Tag: v1.0~13
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=45ae33902e54e10b6950cadb4a1e3d96e59a0341;p=osdd.git

osdc: stdin can be used as an option argument
---

diff --git a/osdc.c b/osdc.c
index 27b6c63..0f01ae7 100644
--- a/osdc.c
+++ b/osdc.c
@@ -14,41 +14,70 @@
 #include "util.h"
 #include "send.h"
 
+static struct osd_msg *msg;
+
 static void NONRET
 usage(void)
 {
-  fprintf(stderr, "Usage: osdc [--<property>=<value> | <message>]*\n");
+  fprintf(stderr, "\
+Usage: osdc [--<property>=<value> | <message>]*\n\
+\n\
+Either <value> or <message> can be `-' for standard input.\n\
+");
   exit(1);
 }
 
+static void
+parse_stdin(char *key)
+{
+  char line[1024];
+  while (fgets(line, sizeof(line), stdin))
+    {
+      char *nl = strchr(line, '\n');
+      if (nl)
+	*nl = 0;
+      osd_add_line(msg, key, line);
+    }
+}
+
 int main(int argc, char **argv)
 {
-  struct osd_msg *m = osd_new_msg();
+  msg = osd_new_msg();
 
   int more_opts = 1;
   for (int i=1; i<argc; i++)
     {
       char *arg = argv[i];
-      if (more_opts && arg[0] == '-' && arg[1] == '-')
+      if (more_opts && arg[0] == '-')
 	{
-	  if (!arg[2])
-	    more_opts = 0;
-	  else
+	  if (arg[1] == '-')
 	    {
-	      arg += 2;
-	      if (!strcmp(arg, "help"))
-		usage();
-	      char *sep = strchr(arg, '=');
-	      if (!sep)
-		usage();
-	      *sep++ = 0;
-	      osd_add_line(m, arg, sep);
+	      if (!arg[2])
+		more_opts = 0;
+	      else
+		{
+		  arg += 2;
+		  if (!strcmp(arg, "help"))
+		    usage();
+		  char *sep = strchr(arg, '=');
+		  if (!sep)
+		    usage();
+		  *sep++ = 0;
+		  if (!strcmp(sep, "-"))
+		    parse_stdin(arg);
+		  else
+		    osd_add_line(msg, arg, sep);
+		}
 	    }
+	  else if (!arg[1])
+	    parse_stdin(NULL);
+	  else
+	    usage();
 	}
       else
-	osd_add_line(m, NULL, arg);
+	osd_add_line(msg, NULL, arg);
     }
 
-  osd_send(m);
+  osd_send(msg);
   return 0;
 }