1 files changed, 102 insertions, 0 deletions
diff --git a/ghc/lib/std/cbits/readFile.lc b/ghc/lib/std/cbits/readFile.lc
new file mode 100644
index 0000000000..0cc9c2c7b9
--- /dev/null
+++ b/ghc/lib/std/cbits/readFile.lc
@@ -0,0 +1,102 @@
+%
+% (c) The GRASP/AQUA Project, Glasgow University, 1994
+%
+\subsection[readFile.lc]{hGetContents Runtime Support}
+
+\begin{code}
+
+#include "rtsdefs.h"
+#include "stgio.h"
+
+#define EOT 4
+
+StgInt
+readBlock(buf, fp, size)
+StgAddr buf;
+StgForeignObj fp;
+StgInt size;
+{
+    int count;
+
+    if (feof((FILE *) fp)) {
+	ghc_errtype = ERR_EOF;
+	ghc_errstr = "";
+	return -1;
+    }
+
+    while ((count = fread(buf, 1, size, (FILE *) fp)) == 0) {
+	if (feof((FILE *) fp)) {
+	    ghc_errtype = ERR_EOF;
+	    ghc_errstr = "";
+	    return -1;
+	} else if (errno != EINTR) {
+	    cvtErrno();
+	    stdErrno();
+	    return -1;
+	}
+	clearerr((FILE *) fp);
+    }
+
+    return count;
+}
+
+StgInt
+readLine(buf, fp, size)
+StgAddr buf;
+StgForeignObj fp;
+StgInt size;
+{
+    if (feof((FILE *) fp)) {
+	ghc_errtype = ERR_EOF;
+	ghc_errstr = "";
+	return -1;
+    }
+
+    while (fgets(buf, size, (FILE *) fp) == NULL) {
+	if (feof((FILE *) fp)) {
+	    ghc_errtype = ERR_EOF;
+	    ghc_errstr = "";
+	    return -1;
+	} else if (errno != EINTR) {
+	    cvtErrno();
+	    stdErrno();
+	    return -1;
+	}
+	clearerr((FILE *) fp);
+    }
+
+    return strlen(buf);
+}
+
+StgInt
+readChar(fp)
+StgForeignObj fp;
+{
+    int c;
+
+    if (feof((FILE *) fp)) {
+	ghc_errtype = ERR_EOF;
+	ghc_errstr = "";
+	return -1;
+    }
+
+    while ((c = getc((FILE *) fp)) == EOF) {
+	if (feof((FILE *) fp)) {
+	    ghc_errtype = ERR_EOF;
+	    ghc_errstr = "";
+	    return -1;
+	} else if (errno != EINTR) {
+	    cvtErrno();
+	    stdErrno();
+	    return -1;
+	}
+	clearerr((FILE *) fp);
+    }
+
+    if (isatty(fileno((FILE *) fp)) && c == EOT) 
+	return EOF;
+    else
+        return c;
+}
+
+\end{code}