Add a dummy pdf_js implementation for use in non-form-supporting builds

The calc.pdf specific version of pdf_jsimp is no longer needed and hence
dropped.

2 files changed, 22 insertions, 408 deletions

diff --git a/pdf/pdf_js_none.c b/pdf/pdf_js_none.c
new file mode 100644
index 00000000..a85103e4
--- /dev/null
+++ b/pdf/pdf_js_none.c
@@ -0,0 +1,22 @@
+#include "fitz-internal.h"
+#include "mupdf-internal.h"
+
+
+pdf_js *pdf_new_js(pdf_document *doc)
+{
+	static int x;
+
+	return (pdf_js *)&x;
+}
+
+void pdf_drop_js(pdf_js *js)
+{
+}
+
+void pdf_js_execute(pdf_js *js, char *code)
+{
+}
+
+void pdf_js_execute_count(pdf_js *js, char *code, int count)
+{
+}
diff --git a/pdf/pdf_jsimp.c b/pdf/pdf_jsimp.c
deleted file mode 100644
index e3433ee8..00000000
--- a/pdf/pdf_jsimp.c
+++ /dev/null
@@ -1,408 +0,0 @@
-/*
- * This is a dummy JavaScript engine. It cheats by recognising the specific
- * strings in calc.pdf, and hence will work only for that file. It is for
- * testing only.
- */
-
-
-#include "fitz-internal.h"
-#include "mupdf-internal.h"
-
-enum
-{
-	FUNC_NONE,
-	FUNC_PLUS,
-	FUNC_MINUS,
-	FUNC_MULT,
-	FUNC_DIV
-};
-
-struct pdf_jsimp_s
-{
-	fz_context *ctx;
-	void       *jsctx;
-	double accum;
-	double entry;
-	double multiplier;
-	double divisor;
-	int func;
-	pdf_jsimp_obj *jsthis;
-	pdf_jsimp_obj *display;
-	pdf_jsimp_obj *funcfield;
-};
-
-/* We need only a couple of specific methods for calc.pdf */
-struct pdf_jsimp_type_s
-{
-	pdf_jsimp_dtr    *dtr;
-	pdf_jsimp_method *getField;
-	pdf_jsimp_getter *getValue;
-	pdf_jsimp_setter *setValue;
-};
-
-struct pdf_jsimp_obj_s
-{
-	pdf_jsimp_type *type;
-	void *obj;
-};
-
-
-static double digit_button(pdf_jsimp *imp, int digit)
-{
-	imp->entry = imp->entry * imp->multiplier + digit / imp->divisor;
-
-	if (imp->divisor >= 10)
-	{
-		imp->divisor = imp->divisor * 10;
-	}
-	else
-	{
-		imp->multiplier = 10;
-	}
-
-	return imp->entry;
-}
-
-static void assign_display_value(pdf_jsimp *imp, double val)
-{
-	fz_context *ctx = imp->ctx;
-	char valstr[256];
-	pdf_jsimp_obj *valobj = NULL;
-	pdf_jsimp_obj *strarg = NULL;
-
-	fz_var(valobj);
-	fz_var(strarg);
-	fz_try(ctx)
-	{
-		if (imp->display == NULL)
-		{
-			pdf_jsimp_obj *doc = imp->jsthis;
-			strarg = pdf_jsimp_fromString(imp, "Display");
-			imp->display = doc->type->getField(imp->jsctx, doc->obj, 1, &strarg);
-		}
-
-		snprintf(valstr, sizeof(valstr), "%.8f", val);
-		if (imp->display && imp->display->type->setValue)
-		{
-			valobj = pdf_jsimp_fromString(imp, valstr);
-			imp->display->type->setValue(imp->jsctx, imp->display->obj, valobj);
-		}
-	}
-	fz_always(ctx)
-	{
-		pdf_jsimp_drop_obj(imp, strarg);
-		pdf_jsimp_drop_obj(imp, valobj);
-	}
-	fz_catch(ctx)
-	{
-		fz_rethrow(ctx);
-	}
-}
-
-static void assign_func_value(pdf_jsimp *imp, int val)
-{
-	fz_context *ctx = imp->ctx;
-	pdf_jsimp_obj *valobj = NULL;
-	pdf_jsimp_obj *strarg = NULL;
-
-	fz_var(valobj);
-	fz_var(strarg);
-	fz_try(ctx)
-	{
-		if (imp->funcfield == NULL)
-		{
-			pdf_jsimp_obj *strarg = pdf_jsimp_fromString(imp, "Func");
-			pdf_jsimp_obj *doc = imp->jsthis;
-			imp->funcfield = doc->type->getField(imp->jsctx, doc->obj, 1, &strarg);
-		}
-
-		if (imp->funcfield && imp->funcfield->type->setValue)
-		{
-			switch(val)
-			{
-			case FUNC_NONE:
-				valobj = pdf_jsimp_fromString(imp, "");
-				break;
-			case FUNC_MULT:
-				valobj = pdf_jsimp_fromString(imp, "MULT");
-				break;
-			case FUNC_DIV:
-				valobj = pdf_jsimp_fromString(imp, "DIV");
-				break;
-			case FUNC_PLUS:
-				valobj = pdf_jsimp_fromString(imp, "PLUS");
-				break;
-			case FUNC_MINUS:
-				valobj = pdf_jsimp_fromString(imp, "MINUS");
-				break;
-			}
-
-			if (valobj)
-				imp->funcfield->type->setValue(imp->jsctx, imp->funcfield->obj, valobj);
-		}
-	}
-	fz_always(ctx)
-	{
-		pdf_jsimp_drop_obj(imp, strarg);
-		pdf_jsimp_drop_obj(imp, valobj);
-	}
-	fz_catch(ctx)
-	{
-		fz_rethrow(ctx);
-	}
-}
-
-static void clear_entry(pdf_jsimp *imp)
-{
-	imp->entry = 0;
-	imp->multiplier = 1;
-	imp->divisor = 1;
-}
-
-static void update_result(pdf_jsimp *imp)
-{
-	switch(imp->func)
-	{
-	case FUNC_PLUS:
-		imp->accum = imp->accum + imp->entry;
-		break;
-	case FUNC_MINUS:
-		imp->accum = imp->accum - imp->entry;
-		break;
-	case FUNC_MULT:
-		imp->accum = imp->accum * imp->entry;
-		break;
-	case FUNC_DIV:
-		if (imp->entry != 0)
-			imp->accum = imp->accum / imp->entry;
-		break;
-	}
-
-	imp->func = FUNC_NONE;
-	assign_func_value(imp, FUNC_NONE);
-	clear_entry(imp);
-}
-
-static void func_button(pdf_jsimp *imp, int func)
-{
-	if (imp->func != FUNC_NONE)
-	{
-		update_result(imp);
-	}
-	else
-	{
-		if (imp->entry != 0)
-			imp->accum = imp->entry;
-
-		imp->func = func;
-		assign_func_value(imp, func);
-		clear_entry(imp);
-	}
-}
-
-static void all_cancel(pdf_jsimp *imp)
-{
-	clear_entry(imp);
-	assign_display_value(imp, 0);
-	imp->accum = 0;
-	assign_func_value(imp, FUNC_NONE);
-}
-
-pdf_jsimp *pdf_new_jsimp(fz_context *ctx, void *jsctx)
-{
-	pdf_jsimp *imp = fz_malloc_struct(ctx, pdf_jsimp);
-
-	imp->ctx = ctx;
-	imp->jsctx = jsctx;
-	imp->accum = 0;
-	imp->entry = 0;
-	imp->divisor = 1;
-	imp->multiplier = 1;
-
-	return imp;
-}
-
-void pdf_drop_jsimp(pdf_jsimp *imp)
-{
-	if (imp)
-	{
-		fz_free(imp->ctx, imp);
-	}
-}
-
-pdf_jsimp_type *pdf_jsimp_new_type(pdf_jsimp *imp, pdf_jsimp_dtr *dtr)
-{
-	pdf_jsimp_type *type = fz_malloc_struct(imp->ctx, pdf_jsimp_type);
-	type->dtr = dtr;
-
-	return type;
-}
-
-void pdf_jsimp_drop_type(pdf_jsimp *imp, pdf_jsimp_type *type)
-{
-	fz_free(imp->ctx, type);
-}
-
-void pdf_jsimp_addmethod(pdf_jsimp *imp, pdf_jsimp_type *type, char *name, pdf_jsimp_method *meth)
-{
-	if (!strcmp(name, "getField"))
-	{
-		type->getField = meth;
-	}
-}
-
-void pdf_jsimp_addproperty(pdf_jsimp *imp, pdf_jsimp_type *type, char *name, pdf_jsimp_getter *get, pdf_jsimp_setter *set)
-{
-	if (!strcmp(name, "value"))
-	{
-		type->getValue = get;
-		type->setValue = set;
-	}
-}
-
-void pdf_jsimp_set_global_type(pdf_jsimp *imp, pdf_jsimp_type *type)
-{
-	imp->jsthis = pdf_jsimp_new_obj(imp, type, NULL);
-}
-
-pdf_jsimp_obj *pdf_jsimp_new_obj(pdf_jsimp *imp, pdf_jsimp_type *type, void *natobj)
-{
-	pdf_jsimp_obj *obj = fz_malloc_struct(imp->ctx, pdf_jsimp_obj);
-	obj->type = type;
-	obj->obj  = natobj;
-
-	return obj;
-}
-
-void pdf_jsimp_drop_obj(pdf_jsimp *imp, pdf_jsimp_obj *obj)
-{
-	if (obj)
-	{
-		if (obj->type)
-		{
-			if (obj->type->dtr)
-				obj->type->dtr(imp->jsctx, obj->obj);
-		}
-		else
-		{
-			/* It's a string */
-			fz_free(imp->ctx, obj->obj);
-		}
-
-		fz_free(imp->ctx, obj);
-	}
-}
-
-void pdf_jsimp_set_this(pdf_jsimp *imp, pdf_jsimp_obj *obj)
-{
-	imp->jsthis = obj;
-}
-
-
-pdf_jsimp_obj *pdf_jsimp_fromString(pdf_jsimp *imp, char *str)
-{
-	/* Represent a string object as a pdf_jsimp_obj with a NULL type */
-	pdf_jsimp_obj *obj = fz_malloc_struct(imp->ctx, pdf_jsimp_obj);
-	fz_try(imp->ctx)
-	{
-		obj->obj = fz_strdup(imp->ctx, str);
-	}
-	fz_catch(imp->ctx)
-	{
-		pdf_jsimp_drop_obj(imp, obj);
-		fz_rethrow(imp->ctx);
-	}
-
-	return obj;
-}
-
-char *pdf_jsimp_toString(pdf_jsimp *imp, pdf_jsimp_obj *obj)
-{
-	return (char *)(obj->type ? NULL : obj->obj);
-}
-
-void pdf_jsimp_execute(pdf_jsimp *imp, char *code)
-{
-	if (!strcmp(code, "display.value = digit_button(0);"))
-	{
-		assign_display_value(imp, digit_button(imp, 0));
-	}
-	else if (!strcmp(code, "display.value = digit_button(1);\r"))
-	{
-		assign_display_value(imp, digit_button(imp, 1));
-	}
-	else if (!strcmp(code, "display.value = digit_button(2)"))
-	{
-		assign_display_value(imp, digit_button(imp, 2));
-	}
-	else if (!strcmp(code, "display.value = digit_button(3)"))
-	{
-		assign_display_value(imp, digit_button(imp, 3));
-	}
-	else if (!strcmp(code, "display.value = digit_button(4)"))
-	{
-		assign_display_value(imp, digit_button(imp, 4));
-	}
-	else if (!strcmp(code, "display.value = digit_button(5)"))
-	{
-		assign_display_value(imp, digit_button(imp, 5));
-	}
-	else if (!strcmp(code, "display.value = digit_button(6);"))
-	{
-		assign_display_value(imp, digit_button(imp, 6));
-	}
-	else if (!strcmp(code, "display.value = digit_button(7);"))
-	{
-		assign_display_value(imp, digit_button(imp, 7));
-	}
-	else if (!strcmp(code, "display.value = digit_button(8);"))
-	{
-		assign_display_value(imp, digit_button(imp, 8));
-	}
-	else if (!strcmp(code, "display.value = digit_button(9);"))
-	{
-		assign_display_value(imp, digit_button(imp, 9));
-	}
-	else if (!strcmp(code, "if (divisor == 1) {\r divisor = 10;\r multiplier = 1;\r }"))
-	{
-		if (imp->divisor == 1)
-		{
-			imp->divisor = 10;
-			imp->multiplier = 1;
-		}
-	}
-	else if (!strcmp(code, "all_cancel();"))
-	{
-		all_cancel(imp);
-	}
-	else if (!strcmp(code, "clear_entry();\rdisplay.value = 0;"))
-	{
-		clear_entry(imp);
-		assign_display_value(imp, 0);
-	}
-	else if (!strcmp(code, "func_button(\"MULT\");"))
-	{
-		func_button(imp, FUNC_MULT);
-	}
-	else if (!strcmp(code, "func_button(\"DIV\");"))
-	{
-		func_button(imp, FUNC_DIV);
-	}
-	else if (!strcmp(code, "func_button(\"PLUS\");"))
-	{
-		func_button(imp, FUNC_PLUS);
-	}
-	else if (!strcmp(code, "func_button(\"MINUS\");"))
-	{
-		func_button(imp, FUNC_MINUS);
-	}
-	else if (!strcmp(code, "update_result();\rdisplay.value = accum;"))
-	{
-		update_result(imp);
-		assign_display_value(imp, imp->accum);
-	}
-}
-
-void pdf_jsimp_execute_count(pdf_jsimp *imp, char *code, int count)
-{
-}