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DOM: Add simple stack context based utility for dumping DOM trees to SGML

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This commit is contained in:
Jonas Fonseca 2006-01-30 06:07:16 +01:00 committed by Jonas Fonseca
parent a3dcc7d5e5
commit f8a86a26c4
3 changed files with 183 additions and 1 deletions
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2
src/dom/sgml/Makefile
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@ -2,6 +2,6 @@ top_builddir=../../..
include $(top_builddir)/Makefile.config
SUBDIRS = docbook html rss xbel
OBJS = sgml.o parser.o scanner.o
OBJS = dump.o parser.o scanner.o sgml.o
include $(top_srcdir)/Makefile.lib

170
src/dom/sgml/dump.c Normal file
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@ -0,0 +1,170 @@
/* SGML generics */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include "elinks.h"
#include "dom/node.h"
#include "dom/sgml/dump.h"
#include "dom/stack.h"
#include "dom/string.h"
static enum dom_stack_code
sgml_file_dumper_element_push(struct dom_stack *stack, struct dom_node *node, void *data)
{
FILE *file = stack->current->data;
struct dom_string *string = &node->string;
fprintf(file, "<%.*s", string->length, string->string);
if (!node->data.element.map
|| node->data.element.map->size == 0)
fprintf(file, ">");
return DOM_STACK_CODE_OK;
}
static enum dom_stack_code
sgml_file_dumper_element_pop(struct dom_stack *stack, struct dom_node *node, void *data)
{
FILE *file = stack->current->data;
struct dom_string *string = &node->string;
fprintf(file, "</%.*s>", string->length, string->string);
return DOM_STACK_CODE_OK;
}
static enum dom_stack_code
sgml_file_dumper_attribute_push(struct dom_stack *stack, struct dom_node *node, void *data)
{
FILE *file = stack->current->data;
struct dom_string *name = &node->string;
struct dom_string *value = &node->data.attribute.value;
if (node->parent->type == DOM_NODE_PROCESSING_INSTRUCTION)
return DOM_STACK_CODE_OK;
fprintf(file, " %.*s", name->length, name->string);
if (value->string) {
if (node->data.attribute.quoted)
fprintf(file, "=%c%.*s%c",
node->data.attribute.quoted,
value->length, value->string,
node->data.attribute.quoted);
else
/* FIXME: 'encode' if the value contains '"'s? */
fprintf(file, "=\"%.*s\"", value->length, value->string);
}
if (!get_dom_node_next(node))
fprintf(file, ">");
return DOM_STACK_CODE_OK;
}
static enum dom_stack_code
sgml_file_dumper_proc_instruction_push(struct dom_stack *stack, struct dom_node *node, void *data)
{
FILE *file = stack->current->data;
struct dom_string *target = &node->string;
struct dom_string *instruction = &node->data.proc_instruction.instruction;
fprintf(file, "<?%.*s %.*s?>",
target->length, target->string,
instruction->length, instruction->string);
return DOM_STACK_CODE_OK;
}
static enum dom_stack_code
sgml_file_dumper_text_push(struct dom_stack *stack, struct dom_node *node, void *data)
{
FILE *file = stack->current->data;
struct dom_string *string = &node->string;
fprintf(file, "%.*s", string->length, string->string);
return DOM_STACK_CODE_OK;
}
static enum dom_stack_code
sgml_file_dumper_cdata_section_push(struct dom_stack *stack, struct dom_node *node, void *data)
{
FILE *file = stack->current->data;
struct dom_string *string = &node->string;
fprintf(file, "<![CDATA[%.*s]]>", string->length, string->string);
return DOM_STACK_CODE_OK;
}
static enum dom_stack_code
sgml_file_dumper_comment_push(struct dom_stack *stack, struct dom_node *node, void *data)
{
FILE *file = stack->current->data;
struct dom_string *string = &node->string;
fprintf(file, "<!--%.*s-->", string->length, string->string);
return DOM_STACK_CODE_OK;
}
static enum dom_stack_code
sgml_file_dumper_entity_ref_push(struct dom_stack *stack, struct dom_node *node, void *data)
{
FILE *file = stack->current->data;
struct dom_string *string = &node->string;
fprintf(file, "&%.*s;", string->length, string->string);
return DOM_STACK_CODE_OK;
}
struct dom_stack_context_info sgml_file_dumper = {
/* Object size: */ 0,
/* Push: */
{
/* */ NULL,
/* DOM_NODE_ELEMENT */ sgml_file_dumper_element_push,
/* DOM_NODE_ATTRIBUTE */ sgml_file_dumper_attribute_push,
/* DOM_NODE_TEXT */ sgml_file_dumper_text_push,
/* DOM_NODE_CDATA_SECTION */ sgml_file_dumper_cdata_section_push,
/* DOM_NODE_ENTITY_REFERENCE */ sgml_file_dumper_entity_ref_push,
/* DOM_NODE_ENTITY */ NULL,
/* DOM_NODE_PROC_INSTRUCTION */ sgml_file_dumper_proc_instruction_push,
/* DOM_NODE_COMMENT */ sgml_file_dumper_comment_push,
/* DOM_NODE_DOCUMENT */ NULL,
/* DOM_NODE_DOCUMENT_TYPE */ NULL,
/* DOM_NODE_DOCUMENT_FRAGMENT */ NULL,
/* DOM_NODE_NOTATION */ NULL,
},
/* Pop: */
{
/* */ NULL,
/* DOM_NODE_ELEMENT */ sgml_file_dumper_element_pop,
/* DOM_NODE_ATTRIBUTE */ NULL,
/* DOM_NODE_TEXT */ NULL,
/* DOM_NODE_CDATA_SECTION */ NULL,
/* DOM_NODE_ENTITY_REFERENCE */ NULL,
/* DOM_NODE_ENTITY */ NULL,
/* DOM_NODE_PROC_INSTRUCTION */ NULL,
/* DOM_NODE_COMMENT */ NULL,
/* DOM_NODE_DOCUMENT */ NULL,
/* DOM_NODE_DOCUMENT_TYPE */ NULL,
/* DOM_NODE_DOCUMENT_FRAGMENT */ NULL,
/* DOM_NODE_NOTATION */ NULL,
}
};
struct dom_stack_context *
add_sgml_file_dumper(struct dom_stack *stack, FILE *file)
{
return add_dom_stack_context(stack, file, &sgml_file_dumper);
}

12
src/dom/sgml/dump.h Normal file
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@ -0,0 +1,12 @@
#ifndef EL_DOM_SGML_DUMP_H
#define EL_DOM_SGML_DUMP_H
#include <stdio.h>
struct dom_stack;
struct dom_stack_context;
struct dom_stack_context *
add_sgml_file_dumper(struct dom_stack *stack, FILE *file);
#endif