1 files changed, 97 insertions, 0 deletions
diff --git a/fitz/stm_misc.c b/fitz/stm_misc.c
new file mode 100644
index 00000000..70c1c315
--- /dev/null
+++ b/fitz/stm_misc.c
@@ -0,0 +1,97 @@
+/*
+ * Miscellaneous I/O functions
+ */
+
+#include "fitz-base.h"
+#include "fitz-stream.h"
+
+int
+fz_tell(fz_stream *stm)
+{
+	if (stm->mode == FZ_SREAD)
+		return fz_rtell(stm);
+	return fz_wtell(stm);
+}
+
+fz_error *
+fz_seek(fz_stream *stm, int offset, int whence)
+{
+	if (stm->mode == FZ_SREAD)
+		return fz_rseek(stm, offset, whence);
+	return fz_wseek(stm, offset, whence);
+}
+
+/*
+ * Read a line terminated by LF or CR or CRLF.
+ */
+
+fz_error *
+fz_readline(fz_stream *stm, char *mem, int n)
+{
+	fz_error *error;
+
+	char *s = mem;
+	int c = EOF;
+	while (n > 1)
+	{
+		c = fz_readbyte(stm);
+		if (c == EOF)
+			break;
+		if (c == '\r') {
+			c = fz_peekbyte(stm);
+			if (c == '\n')
+				c = fz_readbyte(stm);
+			break;
+		}
+		if (c == '\n')
+			break;
+		*s++ = c;
+		n--;
+	}
+	if (n)
+		*s = '\0';
+
+	error = fz_readerror(stm);
+	if (error)
+		return fz_rethrow(error, "cannot read line");
+	return fz_okay;
+}
+
+/*
+ * Utility function to consume all the contents of an input stream into
+ * a freshly allocated buffer.
+ */
+
+fz_error *
+fz_readall(fz_buffer **bufp, fz_stream *stm, int sizehint)
+{
+	fz_error *error;
+	fz_buffer *buf;
+	int c;
+
+	if (sizehint == 0)
+	    sizehint = 4 * 1024;
+
+	error = fz_newbuffer(&buf, sizehint);
+	if (error)
+	    return fz_rethrow(error, "cannot create scratch buffer");
+
+	for (c = fz_readbyte(stm); c != EOF; c = fz_readbyte(stm))
+	{
+		if (buf->wp == buf->ep)
+		{
+		    error = fz_growbuffer(buf);
+		    if (error)
+		    {
+			fz_dropbuffer(buf);
+			return fz_rethrow(error, "cannot resize scratch buffer");
+		    }
+		}
+
+		*buf->wp++ = c;
+	}
+
+	*bufp = buf;
+	return fz_okay;
+}
+