From 78ac1d486ee0c73e8a9226ba09a3828e22f1392b Mon Sep 17 00:00:00 2001
From: Andy Cedilnik <andy.cedilnik@kitware.com>
Date: Thu, 16 Sep 2004 10:58:56 -0400
Subject: [PATCH] ENH: Add method to retrieve the terminal width
---
SystemTools.cxx | 34 ++++++++++++++++++++++++++++++++++
SystemTools.hxx.in | 7 +++++++
2 files changed, 41 insertions(+)
diff --git a/SystemTools.cxx b/SystemTools.cxx
index a389d601..7f0fe129 100644
--- a/SystemTools.cxx
+++ b/SystemTools.cxx
@@ -35,6 +35,8 @@
#include <stdlib.h>
#include <sys/param.h>
#include <sys/wait.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
#endif
#if defined(_WIN32) && (defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__))
@@ -1846,6 +1848,38 @@ bool SystemTools::GetLineFromStream(kwsys_ios::istream& is, kwsys_stl::string& l
return haveData;
}
+int SystemTools::GetTerminalWidth()
+{
+ int width = -1;
+#ifndef _WIN32
+ struct winsize ws;
+ char *columns; /* Unix98 environment variable */
+ if(ioctl(1, TIOCGWINSZ, &ws) != -1 && ws.ws_col>0 && ws.ws_row>0)
+ {
+ width = ws.ws_col;
+ }
+ if(!isatty(STDOUT_FILENO))
+ {
+ width = -1;
+ }
+ columns = getenv("COLUMNS");
+ if(columns && *columns)
+ {
+ long t;
+ char *endptr;
+ t = strtol(columns, &endptr, 0);
+ if(endptr && !*endptr && (t>0) && (t<1000))
+ {
+ width = (int)t;
+ }
+ }
+ if ( width < 9 )
+ {
+ width = -1;
+ }
+#endif
+ return width;
+}
} // namespace KWSYS_NAMESPACE
#if defined(_MSC_VER) && defined(_DEBUG)
diff --git a/SystemTools.hxx.in b/SystemTools.hxx.in
index f0a5e322..db8f6d6f 100644
--- a/SystemTools.hxx.in
+++ b/SystemTools.hxx.in
@@ -276,6 +276,13 @@ public:
*/
static bool GetLineFromStream(kwsys_ios::istream& istr, kwsys_stl::string& line,
bool* has_newline=0);
+
+ /**
+ * Get the width of the terminal window. The code may or may not work, so
+ * make sure you have some resonable defaults prepared if the code returns
+ * some bogus size.
+ */
+ static int GetTerminalWidth();
protected:
// these two functions can be called from ConvertToOutputPath
--
GitLab