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-rw-r--r--libXfont/src/fontfile/bufio.c206
1 files changed, 206 insertions, 0 deletions
diff --git a/libXfont/src/fontfile/bufio.c b/libXfont/src/fontfile/bufio.c
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+++ b/libXfont/src/fontfile/bufio.c
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+/* $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.
+
+*/
+/* $XFree86: xc/lib/font/fontfile/bufio.c,v 3.9 2001/12/14 19:56:50 dawes Exp $ */
+
+/*
+ * Author: Keith Packard, MIT X Consortium
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/Xos.h>
+#include <X11/fonts/fontmisc.h>
+#include <X11/fonts/bufio.h>
+#include <errno.h>
+
+BufFilePtr
+BufFileCreate (char *private,
+ int (*input)(BufFilePtr),
+ int (*output)(int, BufFilePtr),
+ int (*skip)(BufFilePtr, int),
+ int (*close)(BufFilePtr, int))
+{
+ BufFilePtr f;
+
+ f = (BufFilePtr) xalloc (sizeof *f);
+ if (!f)
+ return 0;
+ f->private = private;
+ f->bufp = f->buffer;
+ f->left = 0;
+ f->input = input;
+ f->output = output;
+ f->skip = skip;
+ f->eof = 0;
+ f->close = close;
+ return f;
+}
+
+#define FileDes(f) ((int)(long) (f)->private)
+
+static int
+BufFileRawFill (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 (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 (BufFilePtr f, int doClose)
+{
+ if (doClose)
+ close (FileDes (f));
+ return 1;
+}
+
+BufFilePtr
+BufFileOpenRead (int fd)
+{
+#if defined(__UNIXOS2__) || defined (WIN32)
+ /* hv: I'd bet WIN32 has the same effect here */
+ setmode(fd,O_BINARY);
+#endif
+ return BufFileCreate ((char *)(long) fd, BufFileRawFill, 0, BufFileRawSkip, BufFileRawClose);
+}
+
+static int
+BufFileRawFlush (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;
+}
+
+static int
+BufFileFlush (BufFilePtr f, int doClose)
+{
+ if (f->bufp != f->buffer)
+ return (*f->output) (BUFFILEEOF, f);
+ return 0;
+}
+
+BufFilePtr
+BufFileOpenWrite (int fd)
+{
+ BufFilePtr f;
+
+#if defined(__UNIXOS2__) || defined(WIN32)
+ /* hv: I'd bet WIN32 has the same effect here */
+ setmode(fd,O_BINARY);
+#endif
+ f = BufFileCreate ((char *)(long) fd, 0, BufFileRawFlush, 0, BufFileFlush);
+ f->bufp = f->buffer;
+ f->left = BUFFILESIZE;
+ return f;
+}
+
+int
+BufFileRead (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 (BufFilePtr f, char *b, int n)
+{
+ int cnt;
+ cnt = n;
+ while (cnt--) {
+ if (BufFilePut (*b++, f) == BUFFILEEOF)
+ return BUFFILEEOF;
+ }
+ return n;
+}
+
+int
+BufFileClose (BufFilePtr f, int doClose)
+{
+ int ret;
+ ret = (*f->close) (f, doClose);
+ xfree (f);
+ return ret;
+}