--- /dev/null
+/**
+
+ MultiMarkdown -- Lightweight markup processor to produce HTML, LaTeX, and more.
+
+ @file opml.c
+
+ @brief Export to OPML (Outline Processor Markup Language)
+
+
+ @author Fletcher T. Penney
+ @bug
+
+**/
+
+/*
+
+ Copyright © 2016 - 2018 Fletcher T. Penney.
+
+
+ The `MultiMarkdown 6` project is released under the MIT License..
+
+ GLibFacade.c and GLibFacade.h are from the MultiMarkdown v4 project:
+
+ https://github.com/fletcher/MultiMarkdown-4/
+
+ MMD 4 is released under both the MIT License and GPL.
+
+
+ CuTest is released under the zlib/libpng license. See CuTest.c for the
+ text of the license.
+
+ uthash library:
+ Copyright (c) 2005-2016, Troy D. Hanson
+
+ Licensed under Revised BSD license
+
+ miniz library:
+ Copyright 2013-2014 RAD Game Tools and Valve Software
+ Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
+
+ Licensed under the MIT license
+
+ argtable3 library:
+ Copyright (C) 1998-2001,2003-2011,2013 Stewart Heitmann
+ <sheitmann@users.sourceforge.net>
+ All rights reserved.
+
+ Licensed under the Revised BSD License
+
+
+ ## The MIT License ##
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+ ## Revised BSD License ##
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the following
+ disclaimer in the documentation and/or other materials provided
+ with the distribution.
+ * Neither the name of the <organization> nor the
+ names of its contributors may be used to endorse or promote
+ products derived from this software without specific prior
+ written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT
+ HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE, DATA, OR
+ PROFITS OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+*/
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "opml.h"
+#include "parser.h"
+
+#define print(x) d_string_append(out, x)
+#define print_const(x) d_string_append_c_array(out, x, sizeof(x) - 1)
+#define print_char(x) d_string_append_c(out, x)
+#define printf(...) d_string_append_printf(out, __VA_ARGS__)
+#define print_token(t) d_string_append_c_array(out, &(source[t->start]), t->len)
+#define print_localized(x) mmd_print_localized_char_latex(out, x, scratch)
+
+
+
+void mmd_print_source(DString * out, const char * source, size_t start, size_t len) {
+ const char * s_start = &source[start];
+ const char * s_stop = &source[start + len];
+
+ char * c = (char *) s_start;
+
+ while (c < s_stop) {
+ switch (*c) {
+ case '&':
+ print_const("&");
+ break;
+ case '<':
+ print_const("<");
+ break;
+ case '>':
+ print_const(">");
+ break;
+ case '"':
+ print_const(""");
+ break;
+ case '\'':
+ print_const("'");
+ break;
+ case '\n':
+ print_const(" ");
+ break;
+ case '\r':
+ print_const(" ");
+ break;
+ case '\t':
+ print_const("	");
+ break;
+ default:
+ print_char(*c);
+ break;
+ }
+ c++;
+ }
+}
+
+
+void mmd_check_preamble_opml(DString * out, token * t, scratch_pad * scratch) {
+ if (t) {
+ token * walker = t->child;
+
+ while (walker) {
+ switch(walker->type) {
+ case BLOCK_META:
+ walker = walker->next;
+ break;
+
+ case BLOCK_H1:
+ case BLOCK_H2:
+ case BLOCK_H3:
+ case BLOCK_H4:
+ case BLOCK_H5:
+ case BLOCK_H6:
+ case BLOCK_SETEXT_1:
+ case BLOCK_SETEXT_2:
+ walker = NULL;
+ break;
+
+ default:
+ print_const("<outline text=\"(Untitled Preamble)\" _note=\"");
+ scratch->opml_item_closed = 0;
+ stack_push(scratch->outline_stack, walker);
+ walker = NULL;
+ break;
+ }
+ }
+ }
+}
+
+
+/// Export title from metadata
+void mmd_export_title_opml(DString * out, const char * source, scratch_pad * scratch) {
+ meta * m;
+
+ HASH_FIND_STR(scratch->meta_hash, "title", m);
+
+ if (m) {
+ print_const("<head><title>");
+
+ size_t len = strlen(m->value);
+ mmd_print_source(out, m->value, 0, len);
+
+ print_const("</title></head>\n");
+ }
+}
+
+
+/// Export all metadata
+void mmd_export_metadata_opml(DString * out, const char * source, scratch_pad * scratch) {
+ meta * m;
+ size_t len;
+
+ if (scratch->meta_hash) {
+ print_const("<outline text=\"Metadata\">\n");
+
+ for (m = scratch->meta_hash; m != NULL; m = m->hh.next) {
+ print_const("<outline text=\"");
+ len = strlen(m->key);
+ mmd_print_source(out, m->key, 0, len);
+
+ print_const("\" _note=\"");
+ len = strlen(m->value);
+ mmd_print_source(out, m->value, 0, len);
+
+ print_const("\"/>\n");
+ }
+
+ print_const("</outline>\n");
+ }
+}
+
+
+/// Track outline levels to create proper outline structure
+void mmd_outline_add_opml(DString * out, const char * source, token * current, scratch_pad * scratch) {
+ token * t;
+ short level; // Header level we are adding
+ short t_level;
+ stack * s = scratch->outline_stack;
+
+ if (current->type != DOC_START_TOKEN) {
+ switch (current->type) {
+ case BLOCK_SETEXT_1:
+ level = 1;
+ break;
+
+ case BLOCK_SETEXT_2:
+ level = 2;
+ break;
+
+ case BLOCK_H1:
+ case BLOCK_H2:
+ case BLOCK_H3:
+ case BLOCK_H4:
+ case BLOCK_H5:
+ case BLOCK_H6:
+ level = 1 + current->type - BLOCK_H1;
+ break;
+ default:
+ level = 100;
+ break;
+ }
+
+ level += scratch->base_header_level - 1;
+ } else {
+ level = 0;
+ }
+
+ if (s->size) {
+ t = stack_peek(s);
+
+ // Close last outline item?
+ if (scratch->opml_item_closed == 0) {
+ // Insert direct contents of that item?
+ size_t start;
+ size_t len;
+
+ switch (t->type) {
+ case BLOCK_SETEXT_1:
+ case BLOCK_SETEXT_2:
+ start = t->next->start;
+ break;
+
+ case BLOCK_H1:
+ case BLOCK_H2:
+ case BLOCK_H3:
+ case BLOCK_H4:
+ case BLOCK_H5:
+ case BLOCK_H6:
+ start = t->start + t->len;
+ break;
+
+ default:
+ start = t->start;
+ break;
+ }
+
+ if (current->type != DOC_START_TOKEN) {
+ len = current->start - start;
+ } else {
+ // Finish out document
+ len = current->start + current->len - start;
+ }
+
+ // Output as XML string
+ mmd_print_source(out, source, start, len);
+
+ print_const("\">");
+ scratch->opml_item_closed = 1;
+ }
+
+ while (t) {
+ switch (t->type) {
+ case BLOCK_SETEXT_1:
+ t_level = 1;
+ break;
+
+ case BLOCK_SETEXT_2:
+ t_level = 2;
+ break;
+
+ case BLOCK_H1:
+ case BLOCK_H2:
+ case BLOCK_H3:
+ case BLOCK_H4:
+ case BLOCK_H5:
+ case BLOCK_H6:
+ t_level = 1 + t->type - BLOCK_H1;
+ break;
+
+ default:
+ t_level = 100;
+ break;
+ }
+
+ t_level += scratch->base_header_level - 1;
+
+ if (t_level >= level) {
+ // Close out level
+ print_const("</outline>\n");
+
+ stack_pop(s);
+ t = stack_peek(s);
+ } else {
+ // Nothing to close
+ t = NULL;
+ }
+ }
+ }
+
+
+ // Add current level to stack and open
+ if (current->type != DOC_START_TOKEN) {
+ stack_push(s, current);
+ print_const("<outline");
+ scratch->opml_item_closed = 0;
+ }
+}
+
+
+/// Extract header title
+void mmd_export_header_opml(DString * out, const char * source, token * t, scratch_pad * scratch) {
+ if (t && t->child) {
+ size_t start = t->start;
+ size_t stop = t->start + t->len;
+
+ token * walker = t->child;
+
+ while (walker) {
+ switch (walker->type) {
+ case MARKER_H1:
+ case MARKER_H2:
+ case MARKER_H3:
+ case MARKER_H4:
+ case MARKER_H5:
+ case MARKER_H6:
+ walker = walker->next;
+ break;
+
+ default:
+ start = walker->start;
+ walker = NULL;
+ break;
+ }
+ }
+
+ walker = t->child->tail;
+
+ while (walker) {
+ switch (walker->type) {
+ case TEXT_NL:
+ case TEXT_NL_SP:
+ case INDENT_TAB:
+ case INDENT_SPACE:
+ case NON_INDENT_SPACE:
+ case MARKER_H1:
+ case MARKER_H2:
+ case MARKER_H3:
+ case MARKER_H4:
+ case MARKER_H5:
+ case MARKER_H6:
+ walker = walker->prev;
+ break;
+
+ default:
+ stop = walker->start + walker->len;
+ walker = NULL;
+ break;
+ }
+ }
+
+ mmd_print_source(out, source, start, stop - start);
+ }
+}
+
+
+void mmd_export_token_opml(DString * out, const char * source, token * t, scratch_pad * scratch) {
+ if (t == NULL) {
+ return;
+ }
+
+ short temp_short;
+ char * temp_char = NULL;
+ token * temp_token = NULL;
+
+ switch (t->type) {
+ case DOC_START_TOKEN:
+ print_const("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<opml version=\"1.0\">\n");
+
+ // Export metadata
+ mmd_export_title_opml(out, source, scratch);
+
+ print_const("<body>\n");
+
+ // Check for content before first header
+ mmd_check_preamble_opml(out, t, scratch);
+
+ // Export body
+ mmd_export_token_tree_opml(out, source, t->child, scratch);
+
+ // Close out any existing outline levels
+ mmd_outline_add_opml(out, source, t, scratch);
+
+ mmd_export_metadata_opml(out, source, scratch);
+
+ print_const("</body>\n</opml>\n");
+
+ break;
+
+ case BLOCK_H1:
+ case BLOCK_H2:
+ case BLOCK_H3:
+ case BLOCK_H4:
+ case BLOCK_H5:
+ case BLOCK_H6:
+ case BLOCK_SETEXT_1:
+ case BLOCK_SETEXT_2:
+ mmd_outline_add_opml(out, source, t, scratch);
+
+ print_const(" text=\"");
+ mmd_export_header_opml(out, source, t, scratch);
+ print_const("\" _note=\"");
+ break;
+
+ default:
+ // Skip everything else
+ break;
+ }
+}
+
+
+void mmd_export_token_tree_opml(DString * out, const char * source, token * t, scratch_pad * scratch) {
+
+ // Prevent stack overflow with "dangerous" input causing extreme recursion
+ if (scratch->recurse_depth == kMaxExportRecursiveDepth) {
+ return;
+ }
+
+ scratch->recurse_depth++;
+
+ while (t != NULL) {
+ if (scratch->skip_token) {
+ scratch->skip_token--;
+ } else {
+ mmd_export_token_opml(out, source, t, scratch);
+ }
+
+ t = t->next;
+ }
+
+ scratch->recurse_depth--;
+}
--- /dev/null
+/**
+
+ MultiMarkdown -- Lightweight markup processor to produce HTML, LaTeX, and more.
+
+ @file opml.h
+
+ @brief
+
+
+ @author Fletcher T. Penney
+ @bug
+
+**/
+
+/*
+
+ Copyright © 2016 - 2018 Fletcher T. Penney.
+
+
+ The `MultiMarkdown 6` project is released under the MIT License..
+
+ GLibFacade.c and GLibFacade.h are from the MultiMarkdown v4 project:
+
+ https://github.com/fletcher/MultiMarkdown-4/
+
+ MMD 4 is released under both the MIT License and GPL.
+
+
+ CuTest is released under the zlib/libpng license. See CuTest.c for the
+ text of the license.
+
+ uthash library:
+ Copyright (c) 2005-2016, Troy D. Hanson
+
+ Licensed under Revised BSD license
+
+ miniz library:
+ Copyright 2013-2014 RAD Game Tools and Valve Software
+ Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
+
+ Licensed under the MIT license
+
+ argtable3 library:
+ Copyright (C) 1998-2001,2003-2011,2013 Stewart Heitmann
+ <sheitmann@users.sourceforge.net>
+ All rights reserved.
+
+ Licensed under the Revised BSD License
+
+
+ ## The MIT License ##
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+ ## Revised BSD License ##
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the following
+ disclaimer in the documentation and/or other materials provided
+ with the distribution.
+ * Neither the name of the <organization> nor the
+ names of its contributors may be used to endorse or promote
+ products derived from this software without specific prior
+ written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT
+ HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE, DATA, OR
+ PROFITS OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+*/
+
+
+#ifndef OPML_MULTIMARKDOWN_H
+#define OPML_MULTIMARKDOWN_H
+
+#include "d_string.h"
+#include "token.h"
+#include "writer.h"
+
+void mmd_export_token_opml(DString * out, const char * source, token * t, scratch_pad * scratch);
+void mmd_export_token_tree_opml(DString * out, const char * source, token * t, scratch_pad * scratch);
+
+#endif
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