Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 200 insertions, 0 deletions

diff --git a/epan/except.h b/epan/except.h
new file mode 100644
index 00000000..55ccd96a
--- /dev/null
+++ b/epan/except.h
@@ -0,0 +1,200 @@
+/*
+ * Portable Exception Handling for ANSI C.
+ * Copyright (C) 1999 Kaz Kylheku <kaz@ashi.footprints.net>
+ *
+ * Free Software License:
+ *
+ * All rights are reserved by the author, with the following exceptions:
+ * Permission is granted to freely reproduce and distribute this software,
+ * possibly in exchange for a fee, provided that this copyright notice appears
+ * intact. Permission is also granted to adapt this software to produce
+ * derivative works, as long as the modified versions carry this copyright
+ * notice and additional notices stating that the work has been modified.
+ * This source code may be translated into executable form and incorporated
+ * into proprietary software; there is no requirement for such software to
+ * contain a copyright notice related to this source.
+ *
+ */
+
+/**
+ * @file
+ * Portable Exception Handling for ANSI C.<BR>
+ * Modified to support throwing an exception with a null message pointer,
+ * and to have the message not be const (as we generate messages with
+ * "ws_strdup_printf()", which means they need to be freed; using
+ * a null message means that we don't have to use a special string
+ * for exceptions with no message, and don't have to worry about
+ * not freeing that).
+ */
+
+#ifndef XCEPT_H
+#define XCEPT_H
+
+#include <glib.h>
+#include <setjmp.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <assert.h>
+#include "ws_symbol_export.h"
+#include "ws_attributes.h"
+
+#define XCEPT_GROUP_ANY 0
+#define XCEPT_CODE_ANY  0
+#define XCEPT_BAD_ALLOC 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum { except_no_call, except_call };
+
+typedef struct {
+    unsigned long except_group;
+    unsigned long except_code;
+} except_id_t;
+
+typedef struct {
+    except_id_t volatile except_id;
+    const char *volatile except_message;
+    void *volatile except_dyndata;
+} except_t;
+
+struct except_cleanup {
+    void (*except_func)(void *);
+    void *except_context;
+};
+
+struct except_catch {
+    const except_id_t *except_id;
+    size_t except_size;
+    except_t except_obj;
+    jmp_buf except_jmp;
+};
+
+enum except_stacktype {
+    XCEPT_CLEANUP, XCEPT_CATCHER
+};
+
+struct except_stacknode {
+    struct except_stacknode *except_down;
+    enum except_stacktype except_type;
+    union {
+        struct except_catch *except_catcher;
+        struct except_cleanup *except_cleanup;
+    } except_info;
+};
+
+/* private functions made external so they can be used in macros */
+extern void except_setup_clean(struct except_stacknode *,
+        struct except_cleanup *, void (*)(void *), void *);
+WS_DLL_PUBLIC void except_setup_try(struct except_stacknode *,
+        struct except_catch *, const except_id_t [], size_t);
+WS_DLL_PUBLIC struct except_stacknode *except_pop(void);
+
+/* public interface functions */
+WS_DLL_PUBLIC int except_init(void);
+WS_DLL_PUBLIC void except_deinit(void);
+WS_DLL_PUBLIC WS_NORETURN void except_rethrow(except_t *);
+WS_DLL_PUBLIC WS_NORETURN void except_throw(long, long, const char *);
+WS_DLL_PUBLIC WS_NORETURN void except_throwd(long, long, const char *, void *);
+WS_DLL_PUBLIC WS_NORETURN void except_vthrowf(long group, long code, const char *fmt, va_list vl);
+WS_DLL_PUBLIC WS_NORETURN void except_throwf(long, long, const char *, ...)
+    G_GNUC_PRINTF(3, 4);
+WS_DLL_PUBLIC void (*except_unhandled_catcher(void (*)(except_t *)))(except_t *);
+extern unsigned long except_code(except_t *);
+extern unsigned long except_group(except_t *);
+extern const char *except_message(except_t *);
+extern void *except_data(except_t *);
+WS_DLL_PUBLIC void *except_take_data(except_t *);
+WS_DLL_PUBLIC void except_set_allocator(void *(*)(size_t), void (*)(void *));
+WS_DLL_PUBLIC void *except_alloc(size_t);
+WS_DLL_PUBLIC void except_free(void *);
+
+#define except_code(E) ((E)->except_id.except_code)
+#define except_group(E) ((E)->except_id.except_group)
+#define except_message(E) ((E)->except_message)
+#define except_data(E) ((E)->except_dyndata)
+
+#ifdef __cplusplus
+}
+#endif
+
+/*
+ * void except_cleanup_push(void (*)(void *), void *);
+ * void except_cleanup_pop(int);
+ * void except_checked_cleanup_pop(void (*)(void *), int);
+ * void except_try_push(const except_id_t [], size_t, except_t **);
+ * void except_try_pop(void);
+ */
+
+#define except_cleanup_push(F, C)                               \
+    {                                                           \
+        struct except_stacknode except_sn;                      \
+        struct except_cleanup except_cl;                        \
+        except_setup_clean(&except_sn, &except_cl, F, C)
+
+#define except_cleanup_pop(E)                                   \
+        except_pop();                                           \
+        if (E)                                                  \
+            except_cl.except_func(except_cl.except_context);    \
+    }
+
+#define except_checked_cleanup_pop(F, E)                        \
+            except_pop();                                       \
+        assert (except_cl.except_func == (F));                  \
+        if (E)                                                  \
+            except_cl.except_func(except_cl.except_context);    \
+    }
+
+
+/* --- Variants to allow nesting of except_cleanup_push w/o "shadowing" variables */
+#define except_cleanup_push_pfx(pfx, F, C)                      \
+    {                                                           \
+        struct except_stacknode pfx##_except_sn;                \
+        struct except_cleanup pfx##_except_cl;                  \
+        except_setup_clean(&pfx##_except_sn, &pfx##_except_cl, F, C)
+
+#define except_cleanup_pop_pfx(pfx, E)                          \
+        except_pop();                                           \
+        if (E)                                                  \
+            pfx##_except_cl.except_func(pfx##_except_cl.except_context);\
+    }
+
+#define except_checked_cleanup_pop_pfx(pfx, F, E)               \
+            except_pop();                                       \
+        assert (pfx##_except_cl.except_func == (F));            \
+        if (E)                                                  \
+            pfx##_except_cl.except_func(pfx##_except_cl.except_context);\
+    }
+/* ---------- */
+
+
+#define except_try_push(ID, NUM, PPE)                           \
+     {                                                          \
+        struct except_stacknode except_sn;                      \
+        struct except_catch except_ch;                          \
+        except_setup_try(&except_sn, &except_ch, ID, NUM);      \
+        if (setjmp(except_ch.except_jmp))                       \
+            *(PPE) = &except_ch.except_obj;                     \
+        else                                                    \
+            *(PPE) = 0
+
+#define except_try_pop()                                        \
+        except_free(except_ch.except_obj.except_dyndata);       \
+        except_pop();                                           \
+    }
+
+#endif /* XCEPT_H */
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */