1 files changed, 114 insertions, 0 deletions
diff --git a/third_party/rust/glslopt/glsl-optimizer/src/util/debug.c b/third_party/rust/glslopt/glsl-optimizer/src/util/debug.c
new file mode 100644
index 0000000000..89ae613107
--- /dev/null
+++ b/third_party/rust/glslopt/glsl-optimizer/src/util/debug.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright © 2015 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 <errno.h>
+#include <string.h>
+#include "debug.h"
+#include "u_string.h"
+
+uint64_t
+parse_debug_string(const char *debug,
+                   const struct debug_control *control)
+{
+   uint64_t flag = 0;
+
+   if (debug != NULL) {
+      for (; control->string != NULL; control++) {
+         if (!strcmp(debug, "all")) {
+            flag |= control->flag;
+
+         } else {
+            const char *s = debug;
+            unsigned n;
+
+            for (; n = strcspn(s, ", "), *s; s += MAX2(1, n)) {
+               if (strlen(control->string) == n &&
+                   !strncmp(control->string, s, n))
+                  flag |= control->flag;
+            }
+         }
+      }
+   }
+
+   return flag;
+}
+
+bool
+comma_separated_list_contains(const char *list, const char *s)
+{
+   assert(list);
+   const size_t len = strlen(s);
+
+   for (unsigned n; n = strcspn(list, ","), *list; list += MAX2(1, n)) {
+      if (n == len && !strncmp(list, s, n))
+         return true;
+   }
+
+   return false;
+}
+
+/**
+ * Reads an environment variable and interprets its value as a boolean.
+ *
+ * Recognizes 0/false/no and 1/true/yes.  Other values result in the default value.
+ */
+bool
+env_var_as_boolean(const char *var_name, bool default_value)
+{
+   const char *str = getenv(var_name);
+   if (str == NULL)
+      return default_value;
+
+   if (strcmp(str, "1") == 0 ||
+       strcasecmp(str, "true") == 0 ||
+       strcasecmp(str, "y") == 0 ||
+       strcasecmp(str, "yes") == 0) {
+      return true;
+   } else if (strcmp(str, "0") == 0 ||
+              strcasecmp(str, "false") == 0 ||
+              strcasecmp(str, "n") == 0 ||
+              strcasecmp(str, "no") == 0) {
+      return false;
+   } else {
+      return default_value;
+   }
+}
+
+/**
+ * Reads an environment variable and interprets its value as a unsigned.
+ */
+unsigned
+env_var_as_unsigned(const char *var_name, unsigned default_value)
+{
+   char *str = getenv(var_name);
+   if (str) {
+      char *end;
+      unsigned long result;
+
+      errno = 0;
+      result = strtoul(str, &end, 0);
+      if (errno == 0 && end != str && *end == '\0')
+        return result;
+   }
+   return default_value;
+}