commit initial release

git-svn-id: file:///home/lennart/svn/public/pgets/trunk@3 768266df-afd4-0310-94a7-d396c829e022

1 files changed, 102 insertions, 0 deletions

diff --git a/src/util.c b/src/util.c
new file mode 100644
index 0000000..d6a5ad5
--- /dev/null
+++ b/src/util.c
@@ -0,0 +1,102 @@
+/* $Id$
+ *
+ * This file is part of pgets. 
+ *
+ * pgets is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * pgets is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with pgets; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <unistd.h>
+#include <termios.h>
+#include <string.h>
+
+#include "util.h"
+
+ssize_t loop_read (int FILEDES, void *BUFFER, size_t SIZE) {
+    ssize_t c = 0;
+    
+    while (SIZE > 0) {
+        ssize_t r = read(FILEDES, BUFFER, SIZE);
+
+        if (r <= 0) {
+            if (c == 0)
+                return r;
+            else
+                return c;
+        }
+
+        SIZE -= r;
+        c += r;
+        BUFFER += r;
+    }
+
+    return c;
+}
+
+ssize_t loop_write(int FILEDES, const void *BUFFER, size_t SIZE) {
+    ssize_t c = 0;
+    
+    while (SIZE > 0) {
+        ssize_t r = write(FILEDES, BUFFER, SIZE);
+
+        if (r <= 0) {
+            if (c == 0)
+                return r;
+            else
+                return c;
+        }
+
+        SIZE -= r;
+        c += r;
+        BUFFER += r;
+    }
+
+    return c;
+}
+
+// The name says it all.
+void flush_data(int fd) {
+    tcflush(fd, TCIFLUSH);
+    tcflush(fd, TCIFLUSH);
+}
+
+ssize_t read_line(int FILEDES, char *ln, size_t SIZE) {
+    ssize_t c = 0;
+
+    while (SIZE > 0) {
+        ssize_t r;
+        
+        if ((r = read(FILEDES, ln, 1)) != 1) {
+            if (r < 0 && !c)
+                return -1;
+
+            break;
+        }
+
+        SIZE--;
+        c++;
+
+        if (*ln == '\r' || *ln == '\n') {
+            ln++;
+            break;
+        }
+
+        ln++;
+    }
+
+    if (SIZE)
+        *ln = 0;
+
+    return c;
+}