R6.6 is the Xorg base-lineXORG-MAIN

1 files changed, 219 insertions, 0 deletions

diff --git a/src/fontfile/bufio.c b/src/fontfile/bufio.c
new file mode 100644
index 0000000..40293c5
--- /dev/null
+++ b/src/fontfile/bufio.c
@@ -0,0 +1,219 @@
+/* $Xorg: bufio.c,v 1.4 2001/02/09 02:04:03 xorgcvs Exp $ */
+
+/*
+
+Copyright 1991, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+/*
+ * Author:  Keith Packard, MIT X Consortium
+ */
+
+
+#include <X11/Xos.h>
+#include <fontmisc.h>
+#include <bufio.h>
+#include <errno.h>
+#ifdef X_NOT_STDC_ENV
+extern int errno;
+#endif
+
+BufFilePtr
+BufFileCreate (private, io, skip, close)
+    char    *private;
+    int	    (*io)();
+    int	    (*skip)();
+    int	    (*close)();
+{
+    BufFilePtr	f;
+
+    f = (BufFilePtr) xalloc (sizeof *f);
+    if (!f)
+	return 0;
+    f->private = private;
+    f->bufp = f->buffer;
+    f->left = 0;
+    f->io = io;
+    f->skip = skip;
+    f->close = close;
+    return f;
+}
+
+#define FileDes(f)  ((int) (f)->private)
+
+static int
+BufFileRawFill (f)
+    BufFilePtr	f;
+{
+    int	left;
+
+    left = read (FileDes(f), (char *)f->buffer, BUFFILESIZE);
+    if (left <= 0) {
+	f->left = 0;
+	return BUFFILEEOF;
+    }
+    f->left = left - 1;
+    f->bufp = f->buffer + 1;
+    return f->buffer[0];
+}
+
+static int
+BufFileRawSkip (f, count)
+    BufFilePtr	f;
+    int		count;
+{
+    int	    curoff;
+    int	    fileoff;
+    int	    todo;
+
+    curoff = f->bufp - f->buffer;
+    fileoff = curoff + f->left;
+    if (curoff + count <= fileoff) {
+	f->bufp += count;
+	f->left -= count;
+    } else {
+	todo = count - (fileoff - curoff);
+	if (lseek (FileDes(f), todo, 1) == -1) {
+	    if (errno != ESPIPE)
+		return BUFFILEEOF;
+	    while (todo) {
+		curoff = BUFFILESIZE;
+		if (curoff > todo)
+		    curoff = todo;
+		fileoff = read (FileDes(f), (char *)f->buffer, curoff);
+		if (fileoff <= 0)
+		    return BUFFILEEOF;
+		todo -= fileoff;
+	    }
+	}
+	f->left = 0;
+    }
+    return count;
+}
+
+static int
+BufFileRawClose (f, doClose)
+    BufFilePtr	f;
+{
+    if (doClose)
+	close (FileDes (f));
+    return 1;
+}
+
+BufFilePtr
+BufFileOpenRead (fd)
+    int	fd;
+{
+    return BufFileCreate ((char *) fd, BufFileRawFill, BufFileRawSkip, BufFileRawClose);
+}
+
+static int
+BufFileRawFlush (c, f)
+    int		c;
+    BufFilePtr	f;
+{
+    int	cnt;
+
+    if (c != BUFFILEEOF)
+	*f->bufp++ = c;
+    cnt = f->bufp - f->buffer;
+    f->bufp = f->buffer;
+    f->left = BUFFILESIZE;
+    if (write (FileDes(f), (char *)f->buffer, cnt) != cnt)
+	return BUFFILEEOF;
+    return c;
+}
+
+BufFilePtr
+BufFileOpenWrite (fd)
+    int	fd;
+{
+    BufFilePtr	f;
+
+    f = BufFileCreate ((char *) fd, BufFileRawFlush, 0, BufFileFlush);
+    f->bufp = f->buffer;
+    f->left = BUFFILESIZE;
+    return f;
+}
+
+int
+BufFileRead (f, b, n)
+    BufFilePtr	f;
+    char	*b;
+    int		n;
+{
+    int	    c, cnt;
+    cnt = n;
+    while (cnt--) {
+	c = BufFileGet (f);
+	if (c == BUFFILEEOF)
+	    break;
+	*b++ = c;
+    }
+    return n - cnt - 1;
+}
+
+int
+BufFileWrite (f, b, n)
+    BufFilePtr	f;
+    char	*b;
+    int		n;
+{
+    int	    cnt;
+    cnt = n;
+    while (cnt--) {
+	if (BufFilePut (*b++, f) == BUFFILEEOF)
+	    return BUFFILEEOF;
+    }
+    return n;
+}
+
+int
+BufFileFlush (f)
+    BufFilePtr	f;
+{
+    if (f->bufp != f->buffer)
+	return (*f->io) (BUFFILEEOF, f);
+    return 0;
+}
+
+int
+BufFileClose (f, doClose)
+    BufFilePtr	f;
+    int doClose;
+{
+    int ret;
+    ret = (*f->close) (f, doClose);
+    xfree (f);
+    return ret;
+}
+
+void
+BufFileFree (f)
+    BufFilePtr	f;
+{
+    xfree (f);
+}