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| author | Juan J. Martinez <jjm@usebox.net> | 2022-09-06 07:37:20 +0100 |
|---|---|---|
| committer | Juan J. Martinez <jjm@usebox.net> | 2022-09-06 07:37:20 +0100 |
| commit | 30bf0f51335e87812ffeb54e9437f0b6a1514d67 (patch) | |
| tree | 9c85a2de53b4da69fcfaa84488cc6c12ebd3e5d0 /tools/rasm/lzsa-master/src/stream.c | |
| parent | d8990284057e6401d0374f439df51879595d804d (diff) | |
| download | ubox-msx-lib-30bf0f51335e87812ffeb54e9437f0b6a1514d67.tar.gz ubox-msx-lib-30bf0f51335e87812ffeb54e9437f0b6a1514d67.zip | |
Updated rasm to 1.7
Diffstat (limited to 'tools/rasm/lzsa-master/src/stream.c')
| -rw-r--r-- | tools/rasm/lzsa-master/src/stream.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/tools/rasm/lzsa-master/src/stream.c b/tools/rasm/lzsa-master/src/stream.c new file mode 100644 index 0000000..8937487 --- /dev/null +++ b/tools/rasm/lzsa-master/src/stream.c @@ -0,0 +1,111 @@ +/*
+ * stream.c - streaming I/O implementation
+ *
+ * Copyright (C) 2019 Emmanuel Marty
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+
+/*
+ * Uses the libdivsufsort library Copyright (c) 2003-2008 Yuta Mori
+ *
+ * Inspired by LZ4 by Yann Collet. https://github.com/lz4/lz4
+ * With help, ideas, optimizations and speed measurements by spke <zxintrospec@gmail.com>
+ * With ideas from Lizard by Przemyslaw Skibinski and Yann Collet. https://github.com/inikep/lizard
+ * Also with ideas from smallz4 by Stephan Brumme. https://create.stephan-brumme.com/smallz4/
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "stream.h"
+
+/**
+ * Close file stream
+ *
+ * @param stream stream
+ */
+static void lzsa_filestream_close(lzsa_stream_t *stream) {
+ if (stream->obj) {
+ fclose((FILE*)stream->obj);
+ stream->obj = NULL;
+ stream->read = NULL;
+ stream->write = NULL;
+ stream->eof = NULL;
+ stream->close = NULL;
+ }
+}
+
+/**
+ * Read from file stream
+ *
+ * @param stream stream
+ * @param ptr buffer to read into
+ * @param size number of bytes to read
+ *
+ * @return number of bytes read
+ */
+static size_t lzsa_filestream_read(lzsa_stream_t *stream, void *ptr, size_t size) {
+ return fread(ptr, 1, size, (FILE*)stream->obj);
+}
+
+/**
+ * Write to file stream
+ *
+ * @param stream stream
+ * @param ptr buffer to write from
+ * @param size number of bytes to write
+ *
+ * @return number of bytes written
+ */
+static size_t lzsa_filestream_write(lzsa_stream_t *stream, void *ptr, size_t size) {
+ return fwrite(ptr, 1, size, (FILE*)stream->obj);
+}
+
+/**
+ * Check if file stream has reached the end of the data
+ *
+ * @param stream stream
+ *
+ * @return nonzero if the end of the data has been reached, 0 if there is more data
+ */
+static int lzsa_filestream_eof(lzsa_stream_t *stream) {
+ return feof((FILE*)stream->obj);
+}
+
+/**
+ * Open file and create an I/O stream from it
+ *
+ * @param stream stream to fill out
+ * @param pszInFilename filename
+ * @param pszMode open mode, as with fopen()
+ *
+ * @return 0 for success, nonzero for failure
+ */
+int lzsa_filestream_open(lzsa_stream_t *stream, const char *pszInFilename, const char *pszMode) {
+ stream->obj = (void*)fopen(pszInFilename, pszMode);
+ if (stream->obj) {
+ stream->read = lzsa_filestream_read;
+ stream->write = lzsa_filestream_write;
+ stream->eof = lzsa_filestream_eof;
+ stream->close = lzsa_filestream_close;
+ return 0;
+ }
+ else
+ return -1;
+}
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