Initial C++ conversion

print_help.cpp

@@ -0,0 +1,34 @@
+
+/** \file print_help.c
+	Print help message for the specified command
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "print_help.h"
+
+#define CMD_LEN 1024
+
+#define HELP_ERR "Could not show help message\n"
+
+/* defined in common.h */
+ssize_t write_loop(int fd, char *buff, size_t count);
+
+
+void print_help( char *c, int fd )
+{
+	char cmd[ CMD_LEN];
+	int printed = snprintf( cmd, CMD_LEN, "fish -c '__fish_print_help %s >&%d'", c, fd );
+
+	if( printed < CMD_LEN )
+	{
+		if( (system( cmd ) == -1) )
+		{
+			write_loop(2, HELP_ERR, strlen(HELP_ERR));
+		}
+
+	}
+
+}