I think this should fix issue #217

18 files changed, 2080 insertions, 42 deletions

diff --git a/src/dxfdim.cc b/src/dxfdim.cc
index 1ed37fa..53bc480 100644
--- a/src/dxfdim.cc
+++ b/src/dxfdim.cc
@@ -49,6 +49,9 @@ Value builtin_dxf_dim(const Context *ctx, const std::vector<std::string> &argnam
 	double yorigin = 0;
 	double scale = 1;
 
+  // FIXME: We don't lookup the file relative to where this function was instantiated
+	// since the path is only available for ModuleInstantiations, not function expressions.
+	// See isse #217
 	for (size_t i = 0; i < argnames.size() && i < args.size(); i++) {
 		if (argnames[i] == "file")
 			filename = ctx->getAbsolutePath(args[i].toString());
@@ -63,9 +66,16 @@ Value builtin_dxf_dim(const Context *ctx, const std::vector<std::string> &argnam
 	}
 
 	std::stringstream keystream;
+	fs::path filepath(filename);
+	uintmax_t filesize = -1;
+	time_t lastwritetime = -1;
+	if (fs::exists(filepath) && fs::is_regular_file(filepath)) {
+		filesize = fs::file_size(filepath);
+		lastwritetime = fs::last_write_time(filepath);
+	}
 	keystream << filename << "|" << layername << "|" << name << "|" << xorigin
-						<< "|" << yorigin <<"|" << scale << "|" << fs::last_write_time(filename)
-						<< "|" << fs::file_size(filename);
+						<< "|" << yorigin <<"|" << scale << "|" << lastwritetime
+						<< "|" << filesize;
 	std::string key = keystream.str();
 	if (dxf_dim_cache.find(key) != dxf_dim_cache.end())
 		return dxf_dim_cache.find(key)->second;
@@ -133,6 +143,9 @@ Value builtin_dxf_cross(const Context *ctx, const std::vector<std::string> &argn
 	double yorigin = 0;
 	double scale = 1;
 
+  // FIXME: We don't lookup the file relative to where this function was instantiated
+	// since the path is only available for ModuleInstantiations, not function expressions.
+	// See isse #217
 	for (size_t i = 0; i < argnames.size() && i < args.size(); i++) {
 		if (argnames[i] == "file")
 			filename = ctx->getAbsolutePath(args[i].toString());
diff --git a/src/import.cc b/src/import.cc
index 32d4fed..bbf5a6e 100644
--- a/src/import.cc
+++ b/src/import.cc
@@ -80,7 +80,7 @@ AbstractNode *ImportModule::evaluate(const Context *ctx, const ModuleInstantiati
 	c.args(argnames, argexpr, inst_argnames, inst->argvalues);
 
 	Value v = c.lookup_variable("file");
-	std::string filename = c.getAbsolutePath(v.isUndefined() ? "" : v.toString());
+	std::string filename = inst->getAbsolutePath(v.isUndefined() ? "" : v.toString());
 	import_type_e actualtype = this->type;
 	if (actualtype == TYPE_UNKNOWN) {
 		std::string extraw = boosty::extension_str( fs::path(filename) );
diff --git a/src/linearextrude.cc b/src/linearextrude.cc
index 43db907..ff9682e 100644
--- a/src/linearextrude.cc
+++ b/src/linearextrude.cc
@@ -75,7 +75,7 @@ AbstractNode *LinearExtrudeModule::evaluate(const Context *ctx, const ModuleInst
 
 	if (!file.isUndefined()) {
 		PRINT("DEPRECATED: Support for reading files in linear_extrude will be removed in future releases. Use a child import() instead.");
-		node->filename = c.getAbsolutePath(file.toString());
+		node->filename = inst->getAbsolutePath(file.toString());
 	}
 
 	// if height not given, and first argument is a number,
diff --git a/src/module.cc b/src/module.cc
index e6dcb57..322085b 100644
--- a/src/module.cc
+++ b/src/module.cc
@@ -32,6 +32,9 @@
 #include "function.h"
 #include "printutils.h"
 
+#include <boost/filesystem.hpp>
+namespace fs = boost::filesystem;
+#include "boosty.h"
 #include <boost/foreach.hpp>
 #include <sstream>
 #include <sys/stat.h>
@@ -67,6 +70,19 @@ IfElseModuleInstantiation::~IfElseModuleInstantiation()
 	BOOST_FOREACH (ModuleInstantiation *v, else_children) delete v;
 }
 
+/*!
+	Returns the absolute path to the given filename, unless it's empty.
+ */
+std::string ModuleInstantiation::getAbsolutePath(const std::string &filename) const
+{
+	if (!filename.empty() && !boosty::is_absolute(fs::path(filename))) {
+		return boosty::absolute(fs::path(this->modpath) / filename).string();
+	}
+	else {
+		return filename;
+	}
+}
+
 std::string ModuleInstantiation::dump(const std::string &indent) const
 {
 	std::stringstream dump;
@@ -152,15 +168,15 @@ AbstractNode *Module::evaluate(const Context *ctx, const ModuleInstantiation *in
 
 	c.functions_p = &functions;
 	c.modules_p = &modules;
-
+	
 	if (!usedlibs.empty())
 		c.usedlibs_p = &usedlibs;
 	else
 		c.usedlibs_p = NULL;
-
+	
 	BOOST_FOREACH(const std::string &var, assignments_var) {
 		c.set_variable(var, assignments.at(var)->evaluate(&c));
-	}
+  }
 
 	AbstractNode *node = new AbstractNode(inst);
 	for (size_t i = 0; i < children.size(); i++) {
diff --git a/src/module.h b/src/module.h
index cc82f81..1f9e303 100644
--- a/src/module.h
+++ b/src/module.h
@@ -10,7 +10,7 @@
 class ModuleInstantiation
 {
 public:
-	ModuleInstantiation(const std::string &name = "") 
+	ModuleInstantiation(const std::string &name = "")
 	: ctx(NULL), 
 		tag_root(false), tag_highlight(false), tag_background(false), modname(name) { }
 	virtual ~ModuleInstantiation();
@@ -19,6 +19,10 @@ public:
 	class AbstractNode *evaluate(const class Context *ctx) const;
 	std::vector<AbstractNode*> evaluateChildren(const Context *ctx = NULL) const;
 
+	void setPath(const std::string &path) { this->modpath = path; }
+	const std::string &path() const { return this->modpath; }
+	std::string getAbsolutePath(const std::string &filename) const;
+
 	const std::string &name() const { return this->modname; }
 	bool isBackground() const { return this->tag_background; }
 	bool isHighlight() const { return this->tag_highlight; }
@@ -35,6 +39,7 @@ public:
 	bool tag_background;
 protected:
 	std::string modname;
+	std::string modpath;
 
 	friend class Module;
 };
@@ -61,6 +66,7 @@ class Module : public AbstractModule
 public:
 	Module() : is_handling_dependencies(false) { }
 	virtual ~Module();
+
 	virtual AbstractNode *evaluate(const Context *ctx, const ModuleInstantiation *inst) const;
 	virtual std::string dump(const std::string &indent, const std::string &name) const;
 
diff --git a/src/parser.y b/src/parser.y
index 536f4ef..70aebba 100644
--- a/src/parser.y
+++ b/src/parser.y
@@ -58,6 +58,12 @@ int lexerlex(void);
 std::vector<Module*> module_stack;
 Module *currmodule;
 
+extern void lexerdestroy();
+extern FILE *lexerin;
+extern const char *parser_input_buffer;
+const char *parser_input_buffer;
+std::string parser_source_path;
+
 class ArgContainer {
 public: 
 	std::string argname;
@@ -77,6 +83,7 @@ public:
 	class Value *value;
 	class Expression *expr;
 	class ModuleInstantiation *inst;
+	std::vector<ModuleInstantiation*> *instvec;
 	class IfElseModuleInstantiation *ifelse;
 	class ArgContainer *arg;
 	class ArgsContainer *args;
@@ -117,8 +124,8 @@ public:
 %type <inst> module_instantiation
 %type <ifelse> if_statement
 %type <ifelse> ifelse_statement
-%type <inst> children_instantiation
-%type <inst> module_instantiation_list
+%type <instvec> children_instantiation
+%type <instvec> module_instantiation_list
 %type <inst> single_module_instantiation
 
 %type <args> arguments_call
@@ -182,9 +189,9 @@ statement:
 /* Will return a dummy parent node with zero or more children */
 children_instantiation:
 	module_instantiation {
-		$$ = new ModuleInstantiation();
+		$$ = new std::vector<ModuleInstantiation*>;
 		if ($1) { 
-			$$->children.push_back($1);
+			$$->push_back($1);
 		}
 	} |
 	'{' module_instantiation_list '}' {
@@ -196,14 +203,14 @@ if_statement:
 		$$ = new IfElseModuleInstantiation();
 		$$->argnames.push_back("");
 		$$->argexpr.push_back($3);
+                $$->setPath(parser_source_path);
 
 		if ($$) {
-			$$->children = $5->children;
+                  $$->children = *$5;
 		} else {
-			for (size_t i = 0; i < $5->children.size(); i++)
-				delete $5->children[i];
+			for (size_t i = 0; i < $5->size(); i++)
+                          delete (*$5)[i];
 		}
-		$5->children.clear();
 		delete $5;
 	} ;
 
@@ -214,12 +221,11 @@ ifelse_statement:
 	if_statement TOK_ELSE children_instantiation {
 		$$ = $1;
 		if ($$) {
-			$$->else_children = $3->children;
+                  $$->else_children = *$3;
 		} else {
-			for (size_t i = 0; i < $3->children.size(); i++)
-				delete $3->children[i];
+			for (size_t i = 0; i < $3->size(); i++)
+                          delete (*$3)[i];
 		}
-		$3->children.clear();
 		delete $3;
 	} ;
 
@@ -246,12 +252,11 @@ module_instantiation:
 	single_module_instantiation children_instantiation {
 		$$ = $1;
 		if ($$) {
-			$$->children = $2->children;
+			$$->children = *$2;
 		} else {
-			for (size_t i = 0; i < $2->children.size(); i++)
-				delete $2->children[i];
+			for (size_t i = 0; i < $2->size(); i++)
+                          delete (*$2)[i];
 		}
-		$2->children.clear();
 		delete $2;
 	} |
 	ifelse_statement {
@@ -260,12 +265,12 @@ module_instantiation:
 
 module_instantiation_list:
 	/* empty */ {
-		$$ = new ModuleInstantiation();
+		$$ = new std::vector<ModuleInstantiation*>;
 	} |
 	module_instantiation_list module_instantiation {
 		$$ = $1;
 		if ($$) {
-			if ($2) $$->children.push_back($2);
+			if ($2) $$->push_back($2);
 		} else {
 			delete $2;
 		}
@@ -276,6 +281,7 @@ single_module_instantiation:
 		$$ = new ModuleInstantiation($1);
 		$$->argnames = $3->argnames;
 		$$->argexpr = $3->argexpr;
+                $$->setPath(parser_source_path);
 		free($1);
 		delete $3;
 	}
@@ -536,18 +542,12 @@ void yyerror (char const *s)
 	currmodule = NULL;
 }
 
-extern void lexerdestroy();
-extern FILE *lexerin;
-extern const char *parser_input_buffer;
-const char *parser_input_buffer;
-std::string parser_source_path;
-
 Module *parse(const char *text, const char *path, int debug)
 {
 	lexerin = NULL;
 	parser_error_pos = -1;
 	parser_input_buffer = text;
-	parser_source_path = std::string(path);
+	parser_source_path = boosty::absolute(std::string(path)).string();
 
 	module_stack.clear();
 	Module *rootmodule = currmodule = new Module();
diff --git a/src/rotateextrude.cc b/src/rotateextrude.cc
index dc8ea34..c4d9342 100644
--- a/src/rotateextrude.cc
+++ b/src/rotateextrude.cc
@@ -71,7 +71,7 @@ AbstractNode *RotateExtrudeModule::evaluate(const Context *ctx, const ModuleInst
 
 	if (!file.isUndefined()) {
 		PRINT("DEPRECATED: Support for reading files in rotate_extrude will be removed in future releases. Use a child import() instead.");
-		node->filename = c.getAbsolutePath(file.toString());
+		node->filename = inst->getAbsolutePath(file.toString());
 	}
 
 	node->layername = layer.isUndefined() ? "" : layer.toString();
diff --git a/src/surface.cc b/src/surface.cc
index 4339ead..ca5031e 100644
--- a/src/surface.cc
+++ b/src/surface.cc
@@ -83,7 +83,7 @@ AbstractNode *SurfaceModule::evaluate(const Context *ctx, const ModuleInstantiat
 	c.args(argnames, argexpr, inst->argnames, inst->argvalues);
 
 	Value fileval = c.lookup_variable("file");
-	node->filename = c.getAbsolutePath(fileval.isUndefined() ? "" : fileval.toString());
+	node->filename = inst->getAbsolutePath(fileval.isUndefined() ? "" : fileval.toString());
 
 	Value center = c.lookup_variable("center", true);
 	if (center.type() == Value::BOOL) {
diff --git a/testdata/scad/misc/localfiles-test.scad b/testdata/scad/misc/localfiles-test.scad
new file mode 100644
index 0000000..31efe96
--- /dev/null
+++ b/testdata/scad/misc/localfiles-test.scad
@@ -0,0 +1,3 @@
+use <localfiles_dir/localfiles_module.scad>
+
+localfiles_module();
diff --git a/testdata/scad/misc/localfiles_dir/localfile.dat b/testdata/scad/misc/localfiles_dir/localfile.dat
new file mode 100644
index 0000000..32eba08
--- /dev/null
+++ b/testdata/scad/misc/localfiles_dir/localfile.dat
@@ -0,0 +1,2 @@
+0 1
+2 3
diff --git a/testdata/scad/misc/localfiles_dir/localfile.dxf b/testdata/scad/misc/localfiles_dir/localfile.dxf
new file mode 100644
index 0000000..933e263
--- /dev/null
+++ b/testdata/scad/misc/localfiles_dir/localfile.dxf
@@ -0,0 +1,1968 @@
+999
+dxflib 2.2.0.0
+  0
+SECTION
+  2
+HEADER
+  9
+$ACADVER
+  1
+AC1015
+  9
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+$DIMEXE
+ 40
+1.25
+  9
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+ 40
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+  9
+$PLIMMAX
+ 10
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+ 20
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+  9
+$INSUNITS
+ 70
+4
+  9
+$DIMSTYLE
+  2
+Standard
+  9
+$CLAYER
+  8
+0
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+$DIMEXO
+ 40
+0.625
+  9
+$DIMTXT
+ 40
+2.5
+  9
+$CLAYER
+  8
+0
+  0
+ENDSEC
+  0
+SECTION
+  2
+TABLES
+  0
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+  2
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+  5
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+AcDbSymbolTable
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diff --git a/testdata/scad/misc/localfiles_dir/localfiles_module.scad b/testdata/scad/misc/localfiles_dir/localfiles_module.scad
new file mode 100644
index 0000000..b98a49b
--- /dev/null
+++ b/testdata/scad/misc/localfiles_dir/localfiles_module.scad
@@ -0,0 +1,10 @@
+module localfiles_module()
+{
+  linear_extrude(h=100) import("localfile.dxf");
+  translate([-250,0,0]) linear_extrude(file="localfile.dxf");
+  translate([0,350,0]) rotate_extrude(file="localfile.dxf");
+  translate([250,0,0]) scale([200,200,50]) surface("localfile.dat");
+
+  // This is not supported:
+  // echo(dxf_dim(file="localfile.dxf", name="localfile"));
+}
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 5eecaae..a0d8f6b 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -769,12 +769,15 @@ list(APPEND ECHO_FILES ${FUNCTION_FILES}
 list(APPEND DUMPTEST_FILES ${MINIMAL_FILES} ${FEATURES_FILES} ${EXAMPLE_FILES})
 list(APPEND DUMPTEST_FILES ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/escape-test.scad
                            ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/include-tests.scad
-                           ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/use-tests.scad)
+                           ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/use-tests.scad
+                           ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/localfiles-test.scad)
 
 list(APPEND CGALPNGTEST_FILES ${FEATURES_FILES} ${SCAD_DXF_FILES} ${EXAMPLE_FILES})
 list(APPEND CGALPNGTEST_FILES ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/include-tests.scad
                            ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/use-tests.scad
-                           ${CMAKE_SOURCE_DIR}/../testdata/scad/bugs/transform-nan-inf-tests.scad)
+                           ${CMAKE_SOURCE_DIR}/../testdata/scad/bugs/transform-nan-inf-tests.scad
+                           ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/localfiles-test.scad)
+
 list(APPEND OPENCSGTEST_FILES ${CGALPNGTEST_FILES})
 list(APPEND OPENCSGTEST_FILES ${CMAKE_SOURCE_DIR}/../testdata/scad/bugs/bbox-transform-bug.scad)
 list(APPEND OPENCSGTEST_FILES ${CMAKE_SOURCE_DIR}/../testdata/scad/bugs/intersection-prune-test.scad)
diff --git a/tests/dumptest.cc b/tests/dumptest.cc
index b75a2e2..3627608 100644
--- a/tests/dumptest.cc
+++ b/tests/dumptest.cc
@@ -118,7 +118,6 @@ int main(int argc, char **argv)
 		exit(1);
 	}
 
-	fs::current_path(original_path);
 	std::ofstream outfile;
 	outfile.open(outfilename);
 	outfile << dumpstdstr << "\n";
@@ -127,21 +126,22 @@ int main(int argc, char **argv)
 	delete root_node;
 	delete root_module;
 
+	fs::current_path(original_path);
 	root_module = parsefile(outfilename);
 	if (!root_module) {
 		fprintf(stderr, "Error: Unable to read back dumped file\n");
 		exit(1);
 	}
 
-	if (fs::path(filename).has_parent_path()) {
-		fs::current_path(fs::path(filename).parent_path());
-	}
-
 	AbstractNode::resetIndexCounter();
 	root_node = root_module->evaluate(&root_ctx, &root_inst);
 
 	tree.setRoot(root_node);
 
+	if (fs::path(outfilename).has_parent_path()) {
+		fs::current_path(fs::path(outfilename).parent_path());
+	}
+
 	string readbackstr = dumptree(tree, *root_node);
 	if (dumpstdstr != readbackstr) {
 		fprintf(stderr, "Error: Readback is different from original dump:\n");
diff --git a/tests/regression/cgalpngtest/localfiles-test-expected.png b/tests/regression/cgalpngtest/localfiles-test-expected.png
new file mode 100644
index 0000000..3ad3d96
--- /dev/null
+++ b/tests/regression/cgalpngtest/localfiles-test-expected.png
diff --git a/tests/regression/dumptest/localfiles-test-expected.txt b/tests/regression/dumptest/localfiles-test-expected.txt
new file mode 100644
index 0000000..acdf7e7
--- /dev/null
+++ b/tests/regression/dumptest/localfiles-test-expected.txt
@@ -0,0 +1,17 @@
+	group() {
+		linear_extrude(height = 100, center = false, convexity = 1, $fn = 0, $fa = 12, $fs = 2) {
+			import(file = "localfiles_dir/localfile.dxf", layer = "", origin = [0, 0], scale = 1, convexity = 1, $fn = 0, $fa = 12, $fs = 2);
+		}
+		multmatrix([[1, 0, 0, -250], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
+			linear_extrude(file = "localfiles_dir/localfile.dxf", layer = "", origin = [0, 0], scale = 1, height = 100, center = false, convexity = 1, $fn = 0, $fa = 12, $fs = 2);
+		}
+		multmatrix([[1, 0, 0, 0], [0, 1, 0, 350], [0, 0, 1, 0], [0, 0, 0, 1]]) {
+			rotate_extrude(file = "localfiles_dir/localfile.dxf", layer = "", origin = [0, 0], scale = 1, convexity = 1, $fn = 0, $fa = 12, $fs = 2);
+		}
+		multmatrix([[1, 0, 0, 250], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
+			multmatrix([[200, 0, 0, 0], [0, 200, 0, 0], [0, 0, 50, 0], [0, 0, 0, 1]]) {
+				surface(file = "localfiles_dir/localfile.dat", center = false);
+			}
+		}
+	}
+
diff --git a/tests/regression/opencsgtest/localfiles-test-expected.png b/tests/regression/opencsgtest/localfiles-test-expected.png
new file mode 100644
index 0000000..7bc7909
--- /dev/null
+++ b/tests/regression/opencsgtest/localfiles-test-expected.png
diff --git a/tests/regression/throwntogethertest/localfiles-test-expected.png b/tests/regression/throwntogethertest/localfiles-test-expected.png
new file mode 100644
index 0000000..7bc7909
--- /dev/null
+++ b/tests/regression/throwntogethertest/localfiles-test-expected.png