+++ /dev/null
-/*****************************************************************************\
-* *
-* Name : xml_generator *
-* Author : Chris Koeritz *
-* *
-*******************************************************************************
-* Copyright (c) 2007-$now By Author. This program is free software; you can *
-* redistribute it and/or modify it under the terms of the GNU General Public *
-* License as published by the Free Software Foundation; either version 2 of *
-* the License or (at your option) any later version. This is online at: *
-* http://www.fsf.org/copyleft/gpl.html *
-* Please send any updates to: fred@gruntose.com *
-\*****************************************************************************/
-
-#include "parser_bits.h"
-#include "string_manipulation.h"
-#include "xml_generator.h"
-
-#include <basis/astring.h>
-#include <structures/stack.h>
-#include <structures/string_table.h>
-
-using namespace basis;
-using namespace structures;
-
-namespace textual {
-
-#undef LOG
-#define LOG(s) CLASS_EMERGENCY_LOG(program_wide_logger::get(), s);
-
-//////////////
-
-class tag_info
-{
-public:
- astring _tag_name;
- string_table _attribs;
-
- tag_info() {}
-
- tag_info(const astring &tag_name, const string_table &attribs)
- : _tag_name(tag_name), _attribs(attribs) {}
-};
-
-//////////////
-
-class tag_stack : public stack<tag_info>
-{
-public:
- tag_stack() : stack<tag_info>(0) {}
-};
-
-//////////////
-
-xml_generator::xml_generator(int mods)
-: _tags(new tag_stack),
- _accumulator(new astring),
- _human_read(mods & HUMAN_READABLE),
- _clean_chars(mods & CLEAN_ILLEGAL_CHARS),
- _indentation(2)
-{
-}
-
-xml_generator::~xml_generator()
-{
- WHACK(_tags);
- WHACK(_accumulator);
-}
-
-const char *xml_generator::outcome_name(const outcome &to_name)
-{
- switch (to_name.value()) {
- case ERRONEOUS_TAG: return "ERRONEOUS_TAG";
- default: return common::outcome_name(to_name);
- }
-}
-
-void xml_generator::set_indentation(int to_indent)
-{
- if (to_indent <= 0) to_indent = 1;
- _indentation = to_indent;
-}
-
-void xml_generator::reset()
-{
- _accumulator->reset();
-// we need a reset on stack.
- while (_tags->pop() == common::OKAY) {}
-}
-
-astring xml_generator::generate()
-{
- astring to_return;
- generate(to_return);
- return to_return;
-}
-
-void xml_generator::generate(astring &generated)
-{
- close_all_tags();
- generated = "<?xml version=\"1.0\"?>"; // first string is the version.
- if (_human_read) generated += parser_bits::platform_eol_to_chars();
- generated += *_accumulator;
-}
-
-outcome xml_generator::open_tag(const astring &tag_name)
-{
- string_table junk;
- return open_tag(tag_name, junk);
-}
-
-outcome xml_generator::add_header(const astring &tag_name,
- const string_table &attributes)
-{
- tag_info new_item(tag_name, attributes);
- print_open_tag(new_item, HEADER_TAG);
- return OKAY;
-}
-
-outcome xml_generator::open_tag(const astring &tag_name, const string_table &attributes)
-{
- tag_info new_item(tag_name, attributes);
- print_open_tag(new_item);
- _tags->push(new_item);
- return OKAY;
-}
-
-outcome xml_generator::close_tag(const astring &tag_name)
-{
- if (_tags->elements() < 1) return NOT_FOUND;
- // check to see that it's the right one to close.
- if (_tags->top()._tag_name != tag_name) return ERRONEOUS_TAG;
- print_close_tag(tag_name);
- _tags->pop();
- return OKAY;
-}
-
-void xml_generator::close_all_tags()
-{
- while (_tags->elements()) {
- close_tag(_tags->top()._tag_name);
- }
-}
-
-outcome xml_generator::add_content(const astring &content)
-{
- if (_human_read) {
- astring indentata = string_manipulation::indentation(_indentation);
- int num_indents = _tags->elements();
- for (int i = 0; i < num_indents; i++)
- *_accumulator += indentata;
- }
- if (_clean_chars)
- *_accumulator += clean_reserved(content);
- else
- *_accumulator += content;
- if (_human_read) *_accumulator += parser_bits::platform_eol_to_chars();
- return OKAY;
-}
-
-void xml_generator::print_open_tag(const tag_info &to_print, int type)
-{
- bool is_header = false;
- if (type == HEADER_TAG) is_header = true;
-
- if (_human_read) {
-//hmmm: starting to look like a nice macro for this stuff, param is num levs.
- astring indentata = string_manipulation::indentation(_indentation);
- int num_indents = _tags->elements();
- for (int i = 0; i < num_indents; i++)
- *_accumulator += indentata;
- }
-
- if (is_header)
- *_accumulator += "<?";
- else
- *_accumulator += "<";
- if (_clean_chars)
- *_accumulator += clean_reserved(to_print._tag_name);
- else
- *_accumulator += to_print._tag_name;
- for (int i = 0; i < to_print._attribs.symbols(); i++) {
- astring name, content;
- to_print._attribs.retrieve(i, name, content);
- if (_clean_chars) {
- // flush out badness if we were told to.
- clean_reserved_mod(name, true); // clean spaces.
- clean_reserved_mod(content);
- }
- *_accumulator += " ";
- *_accumulator += name;
- *_accumulator += "=\"";
- *_accumulator += content;
- *_accumulator += "\"";
- }
- if (is_header)
- *_accumulator += "?>";
- else
- *_accumulator += ">";
- if (_human_read) *_accumulator += parser_bits::platform_eol_to_chars();
-}
-
-void xml_generator::print_close_tag(const astring &tag_name)
-{
- if (_human_read) {
- astring indentata = string_manipulation::indentation(_indentation);
- int num_indents = _tags->elements() - 1;
- for (int i = 0; i < num_indents; i++)
- *_accumulator += indentata;
- }
- *_accumulator += "</";
- if (_clean_chars)
- *_accumulator += clean_reserved(tag_name);
- else
- *_accumulator += tag_name;
- *_accumulator += ">";
- if (_human_read) *_accumulator += parser_bits::platform_eol_to_chars();
-}
-
-#define PLUGIN_REPLACEMENT(posn, repl_string) { \
- to_modify.zap(posn, posn); \
- to_modify.insert(posn, repl_string); \
- posn += int(strlen(repl_string)) - 1; \
-}
-
-void xml_generator::clean_reserved_mod(astring &to_modify,
- bool replace_spaces)
-{
-//could this set live somewhere?
- const char *quot = """;
- const char *amp = "&";
- const char *lt = "<";
- const char *gt = ">";
- const char *apos = "'";
- const char *space = "_";
- // was going to use %20 but that still won't parse in an attribute name.
-
- for (int i = 0; i < to_modify.length(); i++) {
- switch (to_modify[i]) {
- case '"': PLUGIN_REPLACEMENT(i, quot); break;
- case '&': PLUGIN_REPLACEMENT(i, amp); break;
- case '<': PLUGIN_REPLACEMENT(i, lt); break;
- case '>': PLUGIN_REPLACEMENT(i, gt); break;
- case '\'': PLUGIN_REPLACEMENT(i, apos); break;
- case ' ': if (replace_spaces) PLUGIN_REPLACEMENT(i, space); break;
- default: continue;
- }
- }
-}
-
-astring xml_generator::clean_reserved(const astring &to_modify,
- bool replace_spaces)
-{
- astring to_return = to_modify;
- clean_reserved_mod(to_return, replace_spaces);
- return to_return;
-}
-
-} //namespace.
-
-
projects / feisty_meow.git / blobdiff