1 files changed, 49 insertions, 0 deletions
diff --git a/fitz/except.c b/fitz/except.c
new file mode 100644
index 00000000..348b950e
--- /dev/null
+++ b/fitz/except.c
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include "except.h"
+
+static void do_throw(fz_except_context *ex)
+{
+    if(ex->depth >= 0)
+        longjmp(ex->stack[ex->depth].buffer, 1);
+    else {
+        printf("Uncaught exception: %s\n", ex->except.mess);
+        exit(EXIT_FAILURE);           /* Bale through normal channels */
+    }
+}
+
+void fz_throw(fz_context *ctx, char *fmt, ...)
+{
+    va_list args;
+
+    va_start(args, fmt);
+    vsprintf(ctx->except->except.mess, fmt, args);
+    va_end(args);
+    do_throw(ctx->except);
+}
+
+fz_except *fz_caught(fz_context *ctx)
+{
+    return &ctx->except->except;
+}
+
+void fz_rethrow(fz_context *ctx)
+{
+    do_throw(ctx->except);
+}
+
+void fz_except_xxx_push(fz_except_context *ex)
+{
+    if(ex->depth+1 >= MAXDEPTH) {
+        fprintf(stderr, "Exception stack overflow!\n");
+        exit(EXIT_FAILURE);           /* Bale through normal channels */
+    }
+    ex->depth++;
+}
+
+void fz_var_xxx(void *e)
+{
+    /* Do nothing */
+}