1 files changed, 131 insertions, 0 deletions
diff --git a/mesalib/src/glsl/glcpp/glcpp.c b/mesalib/src/glsl/glcpp/glcpp.c
new file mode 100644
index 000000000..419b1fc25
--- /dev/null
+++ b/mesalib/src/glsl/glcpp/glcpp.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include "glcpp.h"
+#include "main/mtypes.h"
+
+#ifdef _MSC_VER
+#include <io.h>
+#define STDIN_FILENO 0
+#define read _read
+#define open _open
+#define close _close
+#endif
+
+extern int yydebug;
+
+/* Read from fd until EOF and return a string of everything read.
+ */
+static char *
+load_text_fd (void *ctx, int fd)
+{
+#define CHUNK 4096
+	char *text = NULL;
+	ssize_t text_size = 0;
+	ssize_t total_read = 0;
+	ssize_t bytes;
+
+	while (1) {
+		if (total_read + CHUNK + 1 > text_size) {
+			text_size = text_size ? text_size * 2 : CHUNK + 1;
+			text = talloc_realloc_size (ctx, text, text_size);
+			if (text == NULL) {
+				fprintf (stderr, "Out of memory\n");
+				return NULL;
+			}
+		}
+		bytes = read (fd, text + total_read, CHUNK);
+		if (bytes < 0) {
+			fprintf (stderr, "Error while reading: %s\n",
+				 strerror (errno));
+			talloc_free (text);
+			return NULL;
+		}
+
+		if (bytes == 0) {
+			break;
+		}
+
+		total_read += bytes;
+	}
+
+	text[total_read] = '\0';
+
+	return text;
+}
+
+static char *
+load_text_file(void *ctx, const char *filename)
+{
+	char *text;
+	int fd;
+
+	if (filename == NULL || strcmp (filename, "-") == 0)
+		return load_text_fd (ctx, STDIN_FILENO);
+
+	fd = open (filename, O_RDONLY);
+	if (fd < 0) {
+		fprintf (stderr, "Failed to open file %s: %s\n",
+			 filename, strerror (errno));
+		return NULL;
+	}
+
+	text = load_text_fd (ctx, fd);
+
+	close(fd);
+
+	return text;
+}
+
+int
+main (int argc, char *argv[])
+{
+	char *filename = NULL;
+	void *ctx = talloc(NULL, void*);
+	char *info_log = talloc_strdup(ctx, "");
+	const char *shader;
+	int ret;
+
+	if (argc) {
+		filename = argv[1];
+	}
+
+	shader = load_text_file (ctx, filename);
+	if (shader == NULL)
+	   return 1;
+
+	ret = preprocess(ctx, &shader, &info_log, NULL, API_OPENGL);
+
+	printf("%s", shader);
+	fprintf(stderr, "%s", info_log);
+
+	talloc_free(ctx);
+
+	return ret;
+}