bool
bs_parser_parse(bs_parser_t *parser, const char *path,
const char *framework_path, bs_parse_options_t options,
bs_parse_callback_t callback, void *context, char **error)
{
xmlTextReaderPtr reader;
bs_element_function_t *func;
bs_element_class_t *klass;
bs_element_method_t *method;
unsigned int i;
#define MAX_ARGS 128
bs_element_arg_t args[MAX_ARGS];
bs_element_arg_t fptr_args[MAX_ARGS];
char *protocol_name = NULL;
int func_ptr_arg_depth;
bs_element_function_pointer_t *func_ptr;
bool success;
CFStringRef cf_path;
bool nested_func_ptr;
unsigned int version_number = 0;
if (callback == NULL)
return false;
/* check if the given framework path has not been loaded already */
cf_path = CFStringCreateWithFileSystemRepresentation(kCFAllocatorMalloc,
path);
CFMakeCollectable(cf_path);
for (unsigned i = 0, count = CFArrayGetCount(parser->loaded_paths);
i < count; i++) {
CFStringRef s = CFArrayGetValueAtIndex(parser->loaded_paths, i);
if (CFStringCompare(cf_path, s, kCFCompareCaseInsensitive)
== kCFCompareEqualTo) {
/* already loaded */
return true;
}
}
CFArrayAppendValue(parser->loaded_paths, cf_path);
//printf("parsing %s\n", path);
#define BAIL(fmt, args...) \
do { \
if (error != NULL) { \
char buf[1024]; \
snprintf(buf, sizeof buf, \
"%s:%ld - "fmt, path, \
xmlGetLineNo(xmlTextReaderCurrentNode(reader)), \
##args); \
*error = strdup(buf); \
} \
success = false; \
goto bails; \
} \
while (0)
#if __LP64__
# define CHECK_TYPE_ATTRIBUTE(var) CHECK_ATTRIBUTE(var, "type")
#else
# define CHECK_TYPE_ATTRIBUTE(var) \
if (var == NULL && get_type64_attribute(reader) != NULL) { \
break; \
} \
CHECK_ATTRIBUTE(var, "type")
#endif
#define CHECK_ATTRIBUTE_CAN_BE_EMPTY(a, name) \
CHECK_ATTRIBUTE0(a, name, true)
#define CHECK_ATTRIBUTE(a, name) \
CHECK_ATTRIBUTE0(a, name, false)
#define CHECK_ATTRIBUTE0(a, name, can_be_empty) \
do { \
if (a == NULL) \
BAIL("expected attribute `%s' for element `%s'", \
name, xmlTextReaderConstName(reader)); \
if (!can_be_empty && *a == '\0') { \
free(a); \
BAIL("empty attribute `%s' for element `%s'", \
name, xmlTextReaderConstName(reader)); \
} \
} while (0) \
reader = xmlNewTextReaderFilename(path);
if (reader == NULL)
BAIL("cannot create XML text reader for file at path `%s'", path);
func = NULL;
func_ptr = NULL;
func_ptr_arg_depth = -1;
nested_func_ptr = false;
klass = NULL;
method = NULL;
protocol_name = NULL;
while (true) {
const char *name;
unsigned int namelen;
int node_type = -1;
bool eof = false;
struct bs_xml_atom *atom;
void *bs_element;
bs_element_type_t bs_element_type = 0;
do {
int retval = xmlTextReaderRead(reader);
if (retval == 0) {
eof = true;
break;
}
else if (retval < 0)
BAIL("parsing error: %d", retval);
node_type = xmlTextReaderNodeType(reader);
}
while (node_type != XML_READER_TYPE_ELEMENT
&& node_type != XML_READER_TYPE_END_ELEMENT);
if (eof)
break;
name = (const char *)xmlTextReaderConstName(reader);
namelen = strlen(name);
bs_element = NULL;
atom = bs_xml_element(name, namelen);
if (atom == NULL) {
// TODO: we should include the "signatures" string into the gperf
// function.
if (version_number == 0 && strcmp(name, "signatures") == 0) {
char *str = get_attribute(reader, "version");
if (str != NULL) {
char *p = strchr(str, '.');
if (p != NULL) {
*p = '\0';
int major = atoi(str);
int minor = atoi(&p[1]);
assert(major < 10 && minor < 10);
version_number = (major * 10) + minor;
parser->version_number = version_number;
}
free(str);
}
}
continue;
}
if (nested_func_ptr) {
// FIXME: elements nesting function_pointers aren't supported yet by the
// parser, so we just ignore them.
if (node_type == XML_READER_TYPE_END_ELEMENT
&& (atom->val == BS_XML_FUNCTION || atom->val == BS_XML_METHOD)) {
nested_func_ptr = false;
}
continue;
}
if (node_type == XML_READER_TYPE_ELEMENT) {
switch (atom->val) {
case BS_XML_DEPENDS_ON:
{
char *depends_on_path;
char bs_path[PATH_MAX];
bool bs_path_found;
depends_on_path = get_attribute(reader, "path");
CHECK_ATTRIBUTE(depends_on_path, "path");
//printf("depends of %s\n", depends_on_path);
bs_path_found = bs_find_path(depends_on_path, bs_path,
sizeof bs_path);
if (bs_path_found) {
if (!bs_parser_parse(parser, bs_path, depends_on_path, options,
callback, context, error)) {
free(depends_on_path);
return false;
}
}
free(depends_on_path);
break;
}
case BS_XML_CONSTANT:
{
bs_element_constant_t *bs_const;
char *const_name;
char *const_type;
const_name = get_attribute(reader, "name");
CHECK_ATTRIBUTE(const_name, "name");
const_type = get_type_attribute(reader);
CHECK_TYPE_ATTRIBUTE(const_type);
bs_const = (bs_element_constant_t *)
malloc(sizeof(bs_element_constant_t));
ASSERT_ALLOC(bs_const);
bs_const->name = const_name;
bs_const->type = const_type;
bs_const->ignore = false;
bs_const->suggestion = NULL;
bs_const->magic_cookie = get_boolean_attribute(reader,
"magic_cookie", false);
bs_element = bs_const;
bs_element_type = BS_ELEMENT_CONSTANT;
break;
}
case BS_XML_STRING_CONSTANT:
{
bs_element_string_constant_t *bs_strconst;
char *strconst_name;
char *strconst_value;
strconst_name = get_attribute(reader, "name");
CHECK_ATTRIBUTE(strconst_name, "name");
strconst_value = get_attribute(reader, "value");
CHECK_ATTRIBUTE_CAN_BE_EMPTY(strconst_value, "value");
bs_strconst = (bs_element_string_constant_t *)
malloc(sizeof(bs_element_string_constant_t));
ASSERT_ALLOC(bs_strconst);
bs_strconst->name = strconst_name;
bs_strconst->value = strconst_value;
bs_strconst->nsstring = get_boolean_attribute(reader, "nsstring",
false);
bs_element = bs_strconst;
bs_element_type = BS_ELEMENT_STRING_CONSTANT;
break;
}
case BS_XML_ENUM:
{
char *enum_name;
char *enum_value;
enum_name = get_attribute(reader, "name");
CHECK_ATTRIBUTE(enum_name, "name");
#if __LP64__
enum_value = get_attribute(reader, "value64");
if (enum_value == NULL)
#endif
enum_value = get_attribute(reader, "value");
#if BYTE_ORDER == BIG_ENDIAN
# define BYTE_ORDER_VALUE_ATTR_NAME "be_value"
#else
# define BYTE_ORDER_VALUE_ATTR_NAME "le_value"
#endif
if (enum_value == NULL)
enum_value = get_attribute(reader, BYTE_ORDER_VALUE_ATTR_NAME);
if (enum_value != NULL) {
bs_element_enum_t *bs_enum;
bs_enum = (bs_element_enum_t *)malloc(sizeof(bs_element_enum_t));
ASSERT_ALLOC(bs_enum);
bs_enum->name = enum_name;
bs_enum->value = enum_value;
bs_enum->ignore = get_boolean_attribute(reader, "ignore", false);
bs_enum->suggestion = get_attribute(reader, "suggestion");
bs_element = bs_enum;
bs_element_type = BS_ELEMENT_ENUM;
}
break;
}
case BS_XML_STRUCT:
{
bs_element_struct_t *bs_struct;
char *struct_decorated_type;
char *struct_name;
char type[MAX_ENCODE_LEN];
bs_element_struct_field_t fields[128];
int field_count;
struct_decorated_type = get_type_attribute(reader);
CHECK_TYPE_ATTRIBUTE(struct_decorated_type);
struct_name = get_attribute(reader, "name");
CHECK_ATTRIBUTE(struct_name, "name");
if (!undecorate_struct_type(struct_decorated_type, type,
sizeof type, fields, 128,
&field_count)) {
BAIL("Can't handle structure '%s' with type '%s'",
struct_name, struct_decorated_type);
}
free(struct_decorated_type);
bs_struct =
(bs_element_struct_t *)malloc(sizeof(bs_element_struct_t));
ASSERT_ALLOC(bs_struct);
bs_struct->name = struct_name;
bs_struct->type = strdup(type);
bs_struct->fields = (bs_element_struct_field_t *)malloc(
sizeof(bs_element_struct_field_t) * field_count);
ASSERT_ALLOC(bs_struct->fields);
memcpy(bs_struct->fields, fields,
sizeof(bs_element_struct_field_t) * field_count);
bs_struct->fields_count = field_count;
bs_struct->opaque = get_boolean_attribute(reader, "opaque", false);
bs_element = bs_struct;
bs_element_type = BS_ELEMENT_STRUCT;
break;
}
case BS_XML_OPAQUE:
{
bs_element_opaque_t *bs_opaque;
char *opaque_name;
char *opaque_type;
opaque_name = get_attribute(reader, "name");
CHECK_ATTRIBUTE(opaque_name, "name");
opaque_type = get_type_attribute(reader);
CHECK_TYPE_ATTRIBUTE(opaque_type);
bs_opaque =
(bs_element_opaque_t *)malloc(sizeof(bs_element_opaque_t));
ASSERT_ALLOC(bs_opaque);
bs_opaque->name = opaque_name;
bs_opaque->type = opaque_type;
bs_element = bs_opaque;
bs_element_type = BS_ELEMENT_OPAQUE;
break;
}
case BS_XML_CFTYPE:
{
bs_element_cftype_t *bs_cftype;
char *cftype_name;
char *cftype_type;
cftype_name = get_attribute(reader, "name");
CHECK_ATTRIBUTE(cftype_name, "name");
cftype_type = get_type_attribute(reader);
CHECK_TYPE_ATTRIBUTE(cftype_type);
bs_cftype =
(bs_element_cftype_t *)malloc(sizeof(bs_element_cftype_t));
ASSERT_ALLOC(bs_cftype);
bs_cftype->name = cftype_name;
bs_cftype->type = cftype_type;
#if 1
/* the type_id field isn't used in MacRuby */
bs_cftype->type_id = 0;
#else
char *cftype_gettypeid_func_name;
cftype_gettypeid_func_name = get_attribute(reader, "gettypeid_func");
if (cftype_gettypeid_func_name != NULL) {
void *sym;
sym = dlsym(RTLD_DEFAULT, cftype_gettypeid_func_name);
if (sym == NULL) {
BAIL("cannot locate gettypeid_func function `%s'",
cftype_gettypeid_func_name);
}
else {
CFTypeID (*cb)(void) = sym;
bs_cftype->type_id = (*cb)();
}
}
else {
bs_cftype->type_id = 0;
}
#endif
bs_cftype->tollfree = get_attribute(reader, "tollfree");
bs_element = bs_cftype;
bs_element_type = BS_ELEMENT_CFTYPE;
break;
}
case BS_XML_INFORMAL_PROTOCOL:
{
if (protocol_name != NULL)
free(protocol_name);
protocol_name = get_attribute(reader, "name");
CHECK_ATTRIBUTE(protocol_name, "name");
break;
}
case BS_XML_FUNCTION:
{
char *func_name;
func_name = get_attribute(reader, "name");
CHECK_ATTRIBUTE(func_name, "name");
func =
(bs_element_function_t *)malloc(sizeof(bs_element_function_t));
ASSERT_ALLOC(func);
func->name = func_name;
func->variadic = get_boolean_attribute(reader, "variadic", false);
func->args_count = 0;
func->args = NULL;
func->retval = NULL;
if (xmlTextReaderIsEmptyElement(reader)) {
bs_element = func;
bs_element_type = BS_ELEMENT_FUNCTION;
func = NULL;
}
break;
}
case BS_XML_FUNCTION_ALIAS:
{
bs_element_function_alias_t *bs_func_alias;
char *alias_name;
char *alias_original;
alias_name = get_attribute(reader, "name");
CHECK_ATTRIBUTE(alias_name, "name");
alias_original = get_attribute(reader, "original");
CHECK_ATTRIBUTE(alias_original, "original");
bs_func_alias = (bs_element_function_alias_t *)malloc(
sizeof(bs_element_function_alias_t));
ASSERT_ALLOC(bs_func_alias);
bs_func_alias->name = alias_name;
bs_func_alias->original = alias_original;
bs_element = bs_func_alias;
bs_element_type = BS_ELEMENT_FUNCTION_ALIAS;
break;
}
case BS_XML_CLASS:
{
char *class_name;
class_name = get_attribute(reader, "name");
CHECK_ATTRIBUTE(class_name, "name");
klass = (bs_element_class_t *)malloc(sizeof(bs_element_class_t));
ASSERT_ALLOC(klass);
klass->name = class_name;
klass->class_methods = klass->instance_methods = NULL;
klass->class_methods_count = klass->instance_methods_count = 0;
break;
}
case BS_XML_ARG:
{
if (func != NULL || method != NULL || func_ptr != NULL) {
bs_element_arg_t *bs_arg;
unsigned *argc;
argc = func_ptr != NULL
? &func_ptr->args_count
: func != NULL
? &func->args_count
: &method->args_count;
if (*argc >= MAX_ARGS) {
if (func_ptr != NULL)
BAIL("maximum number of arguments (%d) reached " \
"for function pointer", MAX_ARGS);
else if (func != NULL)
BAIL("maximum number of arguments (%d) reached " \
"for function '%s'", MAX_ARGS, func->name);
else
BAIL("maximum number of arguments (%d) reached " \
"for method '%s'", MAX_ARGS, (char *)method->name);
}
bs_element_arg_t *args_from =
(func_ptr == NULL ? args : fptr_args);
bs_arg = &args_from[(*argc)++];
if (method != NULL && func_ptr == NULL) {
char *index = get_attribute(reader, "index");
CHECK_ATTRIBUTE(index, "index");
bs_arg->index = strtol(index, NULL, 10);
free(index);
}
else {
bs_arg->index = -1;
}
get_type_modifier_attribute(reader, &bs_arg->type_modifier);
#if __LP64__
bs_arg->sel_of_type = get_attribute(reader, "sel_of_type64");
if (bs_arg->sel_of_type == NULL)
#endif
bs_arg->sel_of_type = get_attribute(reader, "sel_of_type");
bs_arg->printf_format = get_boolean_attribute(reader,
"printf_format", false);
bs_arg->null_accepted = get_boolean_attribute(reader,
"null_accepted", true);
get_c_ary_type_attribute(reader,
&bs_arg->carray_type, &bs_arg->carray_type_value);
bs_arg->type = get_type_attribute(reader);
if (get_boolean_attribute(reader, "function_pointer", false)) {
if (func_ptr != NULL) {
func_ptr = NULL;
nested_func_ptr = true;
break;
}
bs_arg->function_pointer = (bs_element_function_pointer_t *)
calloc(1, sizeof(bs_element_function_pointer_t));
ASSERT_ALLOC(bs_arg->function_pointer);
func_ptr = bs_arg->function_pointer;
func_ptr_arg_depth = xmlTextReaderDepth(reader);
}
else {
bs_arg->function_pointer = NULL;
}
}
else {
BAIL("argument defined outside of a " \
"function/method/function_pointer");
}
break;
}
case BS_XML_RETVAL:
{
if (func != NULL || method != NULL || func_ptr != NULL) {
bs_element_retval_t *bs_retval;
if (func_ptr != NULL) {
if (func_ptr->retval != NULL)
BAIL("function pointer return value defined more than once");
}
else if (func != NULL) {
if (func->retval != NULL)
BAIL("function '%s' return value defined more than once",
func->name);
}
else if (method != NULL) {
if (method->retval != NULL)
BAIL("method '%s' return value defined more than once",
(char *)method->name);
}
bs_retval =
(bs_element_retval_t *)malloc(sizeof(bs_element_retval_t));
ASSERT_ALLOC(bs_retval);
get_c_ary_type_attribute(reader, &bs_retval->carray_type,
&bs_retval->carray_type_value);
bs_retval->type = get_type_attribute(reader);
if (bs_retval->type != NULL)
bs_retval->already_retained =
get_boolean_attribute(reader, "already_retained", false);
if (func_ptr != NULL) {
if (bs_retval->type != NULL) {
func_ptr->retval = bs_retval;
}
else {
free(bs_retval);
BAIL("function pointer return value defined without type");
}
}
else if (func != NULL) {
if (bs_retval->type != NULL) {
func->retval = bs_retval;
}
else {
free(bs_retval);
#if !defined(__LP64__)
if (get_type64_attribute(reader) != NULL) {
// The function has no 32-bit return value type and we
// run in 32-bit mode. We just ignore it.
func = NULL;
break;
}
#endif
BAIL("function '%s' return value defined without type",
func->name);
}
}
else {
method->retval = bs_retval;
}
if (get_boolean_attribute(reader, "function_pointer", false)) {
if (func_ptr != NULL) {
func_ptr = NULL;
nested_func_ptr = true;
break;
}
bs_retval->function_pointer = (bs_element_function_pointer_t *)
calloc(1, sizeof(bs_element_function_pointer_t));
ASSERT_ALLOC(bs_retval->function_pointer);
func_ptr = bs_retval->function_pointer;
func_ptr_arg_depth = xmlTextReaderDepth(reader);
}
else {
bs_retval->function_pointer = NULL;
}
}
else {
BAIL("return value defined outside a function/method");
}
break;
}
case BS_XML_METHOD:
{
if (protocol_name != NULL) {
bs_element_informal_protocol_method_t *bs_informal_method;
char *selector;
char *method_type;
selector = get_attribute(reader, "selector");
CHECK_ATTRIBUTE(selector, "selector");
method_type = get_type_attribute(reader);
CHECK_TYPE_ATTRIBUTE(method_type);
bs_informal_method = (bs_element_informal_protocol_method_t *)
malloc(sizeof(bs_element_informal_protocol_method_t));
ASSERT_ALLOC(bs_informal_method);
bs_informal_method->name = sel_registerName(selector);
free(selector);
bs_informal_method->class_method =
get_boolean_attribute(reader, "class_method", false);
bs_informal_method->type = method_type;
bs_informal_method->protocol_name = strdup(protocol_name);
bs_element = bs_informal_method;
bs_element_type = BS_ELEMENT_INFORMAL_PROTOCOL_METHOD;
}
else if (klass != NULL) {
char *selector;
selector = get_attribute(reader, "selector");
CHECK_ATTRIBUTE(selector, "selector");
method =
(bs_element_method_t *)malloc(sizeof(bs_element_method_t));
ASSERT_ALLOC(method);
method->name = sel_registerName(selector);
free(selector);
method->class_method =
get_boolean_attribute(reader, "class_method", false);
method->variadic =
get_boolean_attribute(reader, "variadic", false);
method->ignore =
get_boolean_attribute(reader, "ignore", false);
method->suggestion = get_attribute(reader, "suggestion");
method->args_count = 0;
method->args = NULL;
method->retval = NULL;
if (xmlTextReaderIsEmptyElement(reader)) {
goto index_method;
}
}
else {
BAIL("method defined outside a class or informal protocol");
}
break;
}
}
}
else if (node_type == XML_READER_TYPE_END_ELEMENT) {
switch (atom->val) {
case BS_XML_INFORMAL_PROTOCOL:
{
protocol_name = NULL;
break;
}
case BS_XML_RETVAL:
case BS_XML_ARG:
{
if (func_ptr != NULL
&& func_ptr_arg_depth == xmlTextReaderDepth(reader)) {
bs_element_retval_t *retval = NULL;
bs_element_arg_t *arg = NULL;
unsigned args_count;
if (atom->val == BS_XML_RETVAL) {
retval = func != NULL ? func->retval : method->retval;
}
else {
args_count = func != NULL ? func->args_count
: method->args_count;
arg = &args[args_count - 1];
}
// Determine if we deal with a block or a function pointer.
const char *old_type = (retval ? retval->type : arg->type);
const char lambda_type = *old_type == '@'
? _MR_C_LAMBDA_BLOCK
: _MR_C_LAMBDA_FUNCPTR;
char tmp_type[1025]; // 3 less to fit <, type and >
char new_type[1028];
// Function ptr return type
strlcpy(tmp_type, func_ptr->retval->type, sizeof(tmp_type));
// Function ptr args
for (i = 0; i < func_ptr->args_count; i++) {
strlcat(tmp_type, fptr_args[i].type, sizeof(tmp_type));
}
// Clear the final type string
memset(new_type, 0, sizeof(new_type));
// Append the function pointer type
snprintf(new_type, sizeof(new_type), "%c%c%s%c",
_MR_C_LAMBDA_B, lambda_type, tmp_type, _MR_C_LAMBDA_E);
// Free the old values
if (retval) {
free(retval->type);
retval->type = strdup(new_type);
}
else {
free(arg->type);
arg->type = strdup(new_type);
}
if (func_ptr->args_count > 0) {
size_t len;
len = sizeof(bs_element_arg_t) * func_ptr->args_count;
func_ptr->args = (bs_element_arg_t *)malloc(len);
ASSERT_ALLOC(func_ptr->args);
memcpy(func_ptr->args, fptr_args, len);
}
else {
func_ptr->args = NULL;
}
func_ptr = NULL;
func_ptr_arg_depth = -1;
}
break;
}
case BS_XML_FUNCTION:
{
if (func == NULL) {
break;
}
for (i = 0; i < func->args_count; i++) {
if (args[i].type == NULL)
BAIL("function '%s' argument #%d type not provided",
func->name, i);
}
if (func->args_count > 0) {
size_t len;
len = sizeof(bs_element_arg_t) * func->args_count;
func->args = (bs_element_arg_t *)malloc(len);
ASSERT_ALLOC(func->args);
memcpy(func->args, args, len);
}
bs_element = func;
bs_element_type = BS_ELEMENT_FUNCTION;
func = NULL;
break;
}
case BS_XML_METHOD:
{
bs_element_method_t *methods;
unsigned *methods_count;
if (method->args_count > 0) {
size_t len;
len = sizeof(bs_element_arg_t) * method->args_count;
method->args = (bs_element_arg_t *)malloc(len);
ASSERT_ALLOC(method->args);
memcpy(method->args, args, len);
}
index_method:
methods = method->class_method
? klass->class_methods : klass->instance_methods;
methods_count = method->class_method
? &klass->class_methods_count : &klass->instance_methods_count;
if (methods == NULL) {
methods = (bs_element_method_t *)malloc(
sizeof(bs_element_method_t) * (*methods_count + 1));
}
else {
methods = (bs_element_method_t *)realloc(methods,
sizeof(bs_element_method_t) * (*methods_count + 1));
}
ASSERT_ALLOC(methods);
// methods[*methods_count] = method;
// FIXME this is inefficient
memcpy(&methods[*methods_count], method,
sizeof(bs_element_method_t));
(*methods_count)++;
if (method->class_method)
klass->class_methods = methods;
else
klass->instance_methods = methods;
free(method);
method = NULL;
break;
}
case BS_XML_CLASS:
{
bs_element = klass;
bs_element_type = BS_ELEMENT_CLASS;
klass = NULL;
break;
}
}
}
if (bs_element != NULL)
(*callback)(parser, path, bs_element_type, bs_element, context);
}
success = true;
bails:
if (protocol_name != NULL)
free(protocol_name);
xmlFreeTextReader(reader);
if (!success) {
for (unsigned i = 0, count = CFArrayGetCount(parser->loaded_paths);
i < count; i++) {
CFStringRef s = CFArrayGetValueAtIndex(parser->loaded_paths, i);
if (CFStringCompare(cf_path, s, kCFCompareCaseInsensitive)
== kCFCompareEqualTo) {
CFArrayRemoveValueAtIndex(parser->loaded_paths, i);
break;
}
}
}
if (success && options == BS_PARSE_OPTIONS_LOAD_DYLIBS && framework_path != NULL) {
char buf[PATH_MAX];
if (_bs_find_path(framework_path, buf, sizeof buf, "dylib")) {
if (dlopen(buf, RTLD_LAZY) == NULL) {
if (error != NULL) {
*error = dlerror();
}
success = false;
}
}
}
return success;
}
static gboolean
span_parse_func (MarkupData *md,
OpenTag *tag,
const gchar **names,
const gchar **values,
GMarkupParseContext *context,
GError **error)
{
int line_number, char_number;
int i;
const char *family = NULL;
const char *size = NULL;
const char *style = NULL;
const char *weight = NULL;
const char *variant = NULL;
const char *stretch = NULL;
const char *desc = NULL;
const char *foreground = NULL;
const char *background = NULL;
const char *underline = NULL;
const char *underline_color = NULL;
const char *strikethrough = NULL;
const char *strikethrough_color = NULL;
const char *rise = NULL;
const char *letter_spacing = NULL;
const char *lang = NULL;
const char *fallback = NULL;
const char *gravity = NULL;
const char *gravity_hint = NULL;
g_markup_parse_context_get_position (context,
&line_number, &char_number);
#define CHECK_DUPLICATE(var) G_STMT_START{ \
if ((var) != NULL) { \
g_set_error (error, G_MARKUP_ERROR, \
G_MARKUP_ERROR_INVALID_CONTENT, \
_("Attribute '%s' occurs twice on <span> tag " \
"on line %d char %d, may only occur once"), \
names[i], line_number, char_number); \
return FALSE; \
}}G_STMT_END
#define CHECK_ATTRIBUTE2(var, name) \
if (attr_strcmp (names[i], (name)) == 0) { \
CHECK_DUPLICATE (var); \
(var) = values[i]; \
found = TRUE; \
break; \
}
#define CHECK_ATTRIBUTE(var) CHECK_ATTRIBUTE2 (var, G_STRINGIFY (var))
i = 0;
while (names[i])
{
gboolean found = FALSE;
switch (names[i][0]) {
case 'f':
CHECK_ATTRIBUTE (fallback);
CHECK_ATTRIBUTE2(desc, "font");
CHECK_ATTRIBUTE2(desc, "font_desc");
CHECK_ATTRIBUTE2(family, "face");
CHECK_ATTRIBUTE2(family, "font_family");
CHECK_ATTRIBUTE2(size, "font_size");
CHECK_ATTRIBUTE2(stretch, "font_stretch");
CHECK_ATTRIBUTE2(style, "font_style");
CHECK_ATTRIBUTE2(variant, "font_variant");
CHECK_ATTRIBUTE2(weight, "font_weight");
CHECK_ATTRIBUTE (foreground);
CHECK_ATTRIBUTE2 (foreground, "fgcolor");
break;
case 's':
CHECK_ATTRIBUTE (size);
CHECK_ATTRIBUTE (stretch);
CHECK_ATTRIBUTE (strikethrough);
CHECK_ATTRIBUTE (strikethrough_color);
CHECK_ATTRIBUTE (style);
break;
case 'g':
CHECK_ATTRIBUTE (gravity);
CHECK_ATTRIBUTE (gravity_hint);
break;
case 'l':
CHECK_ATTRIBUTE (lang);
CHECK_ATTRIBUTE (letter_spacing);
break;
case 'u':
CHECK_ATTRIBUTE (underline);
CHECK_ATTRIBUTE (underline_color);
break;
default:
CHECK_ATTRIBUTE (background);
CHECK_ATTRIBUTE2 (background, "bgcolor");
CHECK_ATTRIBUTE2(foreground, "color");
CHECK_ATTRIBUTE (rise);
CHECK_ATTRIBUTE (variant);
CHECK_ATTRIBUTE (weight);
break;
}
if (!found)
{
g_set_error (error, G_MARKUP_ERROR,
G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE,
_("Attribute '%s' is not allowed on the <span> tag "
"on line %d char %d"),
names[i], line_number, char_number);
return FALSE;
}
++i;
}
/* Parse desc first, then modify it with other font-related attributes. */
if (G_UNLIKELY (desc))
{
PangoFontDescription *parsed;
parsed = pango_font_description_from_string (desc);
if (parsed)
{
add_attribute (tag, pango_attr_font_desc_new (parsed));
if (tag)
open_tag_set_absolute_font_size (tag, pango_font_description_get_size (parsed));
pango_font_description_free (parsed);
}
}
if (G_UNLIKELY (family))
{
add_attribute (tag, pango_attr_family_new (family));
}
if (G_UNLIKELY (size))
{
if (g_ascii_isdigit (*size))
{
const char *end;
gint n;
/* cap size from the top at an arbitrary 2048 */
#define MAX_SIZE (2048 * PANGO_SCALE)
if ((end = size, !pango_scan_int (&end, &n)) || *end != '\0' || n < 0 || n > MAX_SIZE)
{
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
_("Value of 'size' attribute on <span> tag on line %d "
"could not be parsed; should be an integer less than %d, or a "
"string such as 'small', not '%s'"),
line_number, MAX_SIZE+1, size);
goto error;
}
add_attribute (tag, pango_attr_size_new (n));
if (tag)
open_tag_set_absolute_font_size (tag, n);
}
else if (strcmp (size, "smaller") == 0)
{
if (tag)
{
tag->scale_level_delta -= 1;
tag->scale_level -= 1;
}
}
else if (strcmp (size, "larger") == 0)
{
if (tag)
{
tag->scale_level_delta += 1;
tag->scale_level += 1;
}
}
else if (parse_absolute_size (tag, size))
; /* nothing */
else
{
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
_("Value of 'size' attribute on <span> tag on line %d "
"could not be parsed; should be an integer, or a "
"string such as 'small', not '%s'"),
line_number, size);
goto error;
}
}
if (G_UNLIKELY (style))
{
PangoStyle pango_style;
if (pango_parse_style (style, &pango_style, FALSE))
add_attribute (tag, pango_attr_style_new (pango_style));
else
{
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
_("'%s' is not a valid value for the 'style' attribute "
"on <span> tag, line %d; valid values are "
"'normal', 'oblique', 'italic'"),
style, line_number);
goto error;
}
}
if (G_UNLIKELY (weight))
{
PangoWeight pango_weight;
if (pango_parse_weight (weight, &pango_weight, FALSE))
add_attribute (tag,
pango_attr_weight_new (pango_weight));
else
{
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
_("'%s' is not a valid value for the 'weight' "
"attribute on <span> tag, line %d; valid "
"values are for example 'light', 'ultrabold' or a number"),
weight, line_number);
goto error;
}
}
if (G_UNLIKELY (variant))
{
PangoVariant pango_variant;
if (pango_parse_variant (variant, &pango_variant, FALSE))
add_attribute (tag, pango_attr_variant_new (pango_variant));
else
{
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
_("'%s' is not a valid value for the 'variant' "
"attribute on <span> tag, line %d; valid values are "
"'normal', 'smallcaps'"),
variant, line_number);
goto error;
}
}
if (G_UNLIKELY (stretch))
{
PangoStretch pango_stretch;
if (pango_parse_stretch (stretch, &pango_stretch, FALSE))
add_attribute (tag, pango_attr_stretch_new (pango_stretch));
else
{
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
_("'%s' is not a valid value for the 'stretch' "
"attribute on <span> tag, line %d; valid "
"values are for example 'condensed', "
"'ultraexpanded', 'normal'"),
stretch, line_number);
goto error;
}
}
if (G_UNLIKELY (foreground))
{
PangoColor color;
if (!span_parse_color ("foreground", foreground, &color, line_number, error))
goto error;
add_attribute (tag, pango_attr_foreground_new (color.red, color.green, color.blue));
}
if (G_UNLIKELY (background))
{
PangoColor color;
if (!span_parse_color ("background", background, &color, line_number, error))
goto error;
add_attribute (tag, pango_attr_background_new (color.red, color.green, color.blue));
}
if (G_UNLIKELY (underline))
{
PangoUnderline ul = PANGO_UNDERLINE_NONE;
if (!span_parse_enum ("underline", underline, PANGO_TYPE_UNDERLINE, &ul, line_number, error))
goto error;
add_attribute (tag, pango_attr_underline_new (ul));
}
if (G_UNLIKELY (underline_color))
{
PangoColor color;
if (!span_parse_color ("underline_color", underline_color, &color, line_number, error))
goto error;
add_attribute (tag, pango_attr_underline_color_new (color.red, color.green, color.blue));
}
if (G_UNLIKELY (gravity))
{
PangoGravity gr = PANGO_GRAVITY_SOUTH;
if (!span_parse_enum ("gravity", gravity, PANGO_TYPE_GRAVITY, &gr, line_number, error))
goto error;
add_attribute (tag, pango_attr_gravity_new (gr));
}
if (G_UNLIKELY (gravity_hint))
{
PangoGravityHint hint = PANGO_GRAVITY_HINT_NATURAL;
if (!span_parse_enum ("gravity_hint", gravity_hint, PANGO_TYPE_GRAVITY_HINT, &hint, line_number, error))
goto error;
add_attribute (tag, pango_attr_gravity_hint_new (hint));
}
if (G_UNLIKELY (strikethrough))
{
gboolean b = FALSE;
if (!span_parse_boolean ("strikethrough", strikethrough, &b, line_number, error))
goto error;
add_attribute (tag, pango_attr_strikethrough_new (b));
}
if (G_UNLIKELY (strikethrough_color))
{
PangoColor color;
if (!span_parse_color ("strikethrough_color", strikethrough_color, &color, line_number, error))
goto error;
add_attribute (tag, pango_attr_strikethrough_color_new (color.red, color.green, color.blue));
}
if (G_UNLIKELY (fallback))
{
gboolean b = FALSE;
if (!span_parse_boolean ("fallback", fallback, &b, line_number, error))
goto error;
add_attribute (tag, pango_attr_fallback_new (b));
}
if (G_UNLIKELY (rise))
{
gint n = 0;
if (!span_parse_int ("rise", rise, &n, line_number, error))
goto error;
add_attribute (tag, pango_attr_rise_new (n));
}
if (G_UNLIKELY (letter_spacing))
{
gint n = 0;
if (!span_parse_int ("letter_spacing", letter_spacing, &n, line_number, error))
goto error;
add_attribute (tag, pango_attr_letter_spacing_new (n));
}
if (G_UNLIKELY (lang))
{
add_attribute (tag,
pango_attr_language_new (pango_language_from_string (lang)));
}
return TRUE;
error:
return FALSE;
}