Move system utilities to separate source files

12 files changed, 98 insertions, 47 deletions

diff --git a/src/byte_sink.h b/src/byte_sink.h
index cd9cbce6..0d825020 100644
--- a/src/byte_sink.h
+++ b/src/byte_sink.h
@@ -22,6 +22,8 @@
 
 #include "serd/serd.h"
 
+#include "system.h"
+
 typedef struct SerdByteSinkImpl {
 	SerdWriteFunc sink;
 	void*         stream;
@@ -39,7 +41,7 @@ serd_byte_sink_new(SerdWriteFunc sink, void* stream, size_t block_size)
 	bsink.size       = 0;
 	bsink.block_size = block_size;
 	bsink.buf        = ((block_size > 1)
-	                    ? (char*)serd_bufalloc(block_size)
+	                    ? (char*)serd_allocate_buffer(block_size)
 	                    : NULL);
 	return bsink;
 }
diff --git a/src/byte_source.c b/src/byte_source.c
index 2d79e161..19e942a5 100644
--- a/src/byte_source.c
+++ b/src/byte_source.c
@@ -15,9 +15,13 @@
 */
 
 #include "byte_source.h"
+#include "system.h"
 
 #include "serd_internal.h"
 
+#include <stdlib.h>
+#include <string.h>
+
 SerdStatus
 serd_byte_source_page(SerdByteSource* source)
 {
@@ -56,7 +60,7 @@ serd_byte_source_open_source(SerdByteSource*     source,
 	source->from_stream = true;
 
 	if (page_size > 1) {
-		source->file_buf = (uint8_t*)serd_bufalloc(page_size);
+		source->file_buf = (uint8_t*)serd_allocate_buffer(page_size);
 		source->read_buf = source->file_buf;
 		memset(source->file_buf, '\0', page_size);
 	} else {
diff --git a/src/n3.c b/src/n3.c
index e200f323..1d43572b 100644
--- a/src/n3.c
+++ b/src/n3.c
@@ -18,7 +18,6 @@
 
 #include <assert.h>
 #include <ctype.h>
-#include <errno.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/src/reader.c b/src/reader.c
index f8459e45..c50b4865 100644
--- a/src/reader.c
+++ b/src/reader.c
@@ -25,6 +25,8 @@
 #include <string.h>
 
 #include "reader.h"
+#include "system.h"
+#include "world.h"
 
 static SerdStatus serd_reader_prepare(SerdReader* reader);
 
diff --git a/src/serd_internal.h b/src/serd_internal.h
index f06c7051..911d296f 100644
--- a/src/serd_internal.h
+++ b/src/serd_internal.h
@@ -17,57 +17,14 @@
 #ifndef SERD_INTERNAL_H
 #define SERD_INTERNAL_H
 
-#define _POSIX_C_SOURCE 200809L /* for posix_memalign and posix_fadvise */
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
 #include "serd/serd.h"
 #include "serd_config.h"
 
-#include "world.h"
-
-#if defined(HAVE_FILENO)
-#   include <fcntl.h>
-#endif
-
 #define NS_XSD "http://www.w3.org/2001/XMLSchema#"
 #define NS_RDF "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
 
-#define SERD_PAGE_SIZE 4096
-
 #ifndef MIN
 #    define MIN(a, b) (((a) < (b)) ? (a) : (b))
 #endif
 
-/** fread-like wrapper for getc (which is faster). */
-static inline size_t
-serd_file_read_byte(void* buf, size_t size, size_t nmemb, void* stream)
-{
-	(void)size;
-	(void)nmemb;
-
-	const int c = getc((FILE*)stream);
-	if (c == EOF) {
-		*((uint8_t*)buf) = 0;
-		return 0;
-	}
-	*((uint8_t*)buf) = (uint8_t)c;
-	return 1;
-}
-
-static inline void*
-serd_bufalloc(size_t size)
-{
-#ifdef HAVE_POSIX_MEMALIGN
-	void* ptr;
-	const int ret = posix_memalign(&ptr, SERD_PAGE_SIZE, size);
-	return ret ? NULL : ptr;
-#else
-	return malloc(size);
-#endif
-}
-
 #endif  // SERD_INTERNAL_H
diff --git a/src/serdi.c b/src/serdi.c
index 0d0bce04..1272a70b 100644
--- a/src/serdi.c
+++ b/src/serdi.c
@@ -27,6 +27,7 @@
 #include <string.h>
 
 #include "string_utils.h"
+#include "system.h"
 #include "world.h"
 
 #define SERDI_ERROR(msg)       fprintf(stderr, "serdi: " msg);
diff --git a/src/string.c b/src/string.c
index 6e0edcd8..83f94fd9 100644
--- a/src/string.c
+++ b/src/string.c
@@ -18,6 +18,7 @@
 #include "string_utils.h"
 
 #include <math.h>
+#include <stdlib.h>
 
 void
 serd_free(void* ptr)
diff --git a/src/string_utils.h b/src/string_utils.h
index f4620859..0c5ae557 100644
--- a/src/string_utils.h
+++ b/src/string_utils.h
@@ -18,6 +18,7 @@
 #define SERD_STRING_UTILS_H
 
 #include <ctype.h>
+#include <string.h>
 
 /** Unicode replacement character in UTF-8 */
 static const uint8_t replacement_char[] = { 0xEF, 0xBF, 0xBD };
diff --git a/src/system.c b/src/system.c
new file mode 100644
index 00000000..cf26bb37
--- /dev/null
+++ b/src/system.c
@@ -0,0 +1,36 @@
+/*
+  Copyright 2011-2018 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#define _POSIX_C_SOURCE 200809L /* for posix_memalign */
+
+#include "system.h"
+
+#include "serd_config.h"
+#include "serd_internal.h"
+
+#include <stdlib.h>
+
+void*
+serd_allocate_buffer(size_t size)
+{
+#ifdef HAVE_POSIX_MEMALIGN
+	void* ptr;
+	const int ret = posix_memalign(&ptr, SERD_PAGE_SIZE, size);
+	return ret ? NULL : ptr;
+#else
+	return malloc(size);
+#endif
+}
diff --git a/src/system.h b/src/system.h
new file mode 100644
index 00000000..f17eb278
--- /dev/null
+++ b/src/system.h
@@ -0,0 +1,44 @@
+/*
+  Copyright 2011-2018 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef SERD_SYSTEM_H
+#define SERD_SYSTEM_H
+
+#include <stdint.h>
+#include <stdio.h>
+
+#define SERD_PAGE_SIZE 4096
+
+/** Faster fread-like wrapper for getc. */
+static inline size_t
+serd_file_read_byte(void* buf, size_t size, size_t nmemb, void* stream)
+{
+	(void)size;
+	(void)nmemb;
+
+	const int c = getc((FILE*)stream);
+	if (c == EOF) {
+		*((uint8_t*)buf) = 0;
+		return 0;
+	}
+	*((uint8_t*)buf) = (uint8_t)c;
+	return 1;
+}
+
+/** Allocate an aligned buffer for I/O. */
+void* serd_allocate_buffer(size_t size);
+
+#endif  // SERD_SYSTEM_H
diff --git a/src/world.c b/src/world.c
index 7ec483e8..49a84d42 100644
--- a/src/world.c
+++ b/src/world.c
@@ -19,9 +19,12 @@
 #include "serd_internal.h"
 #include "serd_config.h"
 
+#include <errno.h>
 #include <stdarg.h>
 #include <stdio.h>
-#if defined(HAVE_POSIX_FADVISE)
+#include <stdlib.h>
+#include <string.h>
+#if defined(HAVE_POSIX_FADVISE) || defined(HAVE_FILENO)
 #   include <fcntl.h>
 #endif
 
diff --git a/src/writer.c b/src/writer.c
index ed8ab0c3..796780ee 100644
--- a/src/writer.c
+++ b/src/writer.c
@@ -26,6 +26,7 @@
 #include "stack.h"
 #include "string_utils.h"
 #include "uri_utils.h"
+#include "world.h"
 
 typedef struct {
 	SerdNode* graph;