forked from rtomayko/rpeg-markdown
/
markdown_output.c
2833 lines (2690 loc) · 105 KB
/
markdown_output.c
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/**********************************************************************
markdown_output.c - functions for printing Elements parsed by
markdown_peg.
(c) 2008 John MacFarlane (jgm at berkeley dot edu).
portions Copyright (c) 2010-2013 Fletcher T. Penney
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License or the MIT
license. See LICENSE for details.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
***********************************************************************/
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "glib.h"
#include "markdown_peg.h"
#include "odf.h"
#include "utility_functions.h"
static int extensions;
static int base_header_level = 1;
static char *latex_footer;
static int table_column = 0;
static char *table_alignment;
static char cell_type = 'd';
static int language = ENGLISH;
static bool html_footer = FALSE;
static int odf_type = 0;
static bool no_latex_footnote = FALSE;
static bool am_printing_html_footnote = FALSE;
static int footnote_counter_to_print = 0;
static int odf_list_needs_end_p = 0;
static void print_html_string(GString *out, char *str, bool obfuscate);
static void print_html_element_list(GString *out, element *list, bool obfuscate);
static void print_html_element(GString *out, element *elt, bool obfuscate);
static void print_latex_string(GString *out, char *str);
static void print_latex_element_list(GString *out, element *list);
static void print_latex_element(GString *out, element *elt);
static void print_groff_string(GString *out, char *str);
static void print_groff_mm_element_list(GString *out, element *list);
static void print_groff_mm_element(GString *out, element *elt, int count);
static void print_odf_code_string(GString *out, char *str);
static void print_odf_string(GString *out, char *str);
static void print_odf_element_list(GString *out, element *list);
static void print_odf_element(GString *out, element *elt);
static void print_odf_body_element_list(GString *out, element *list);
static bool list_contains_key(element *list, int key);
/* MultiMarkdown Routines */
static void print_html_header(GString *out, element *elt, bool obfuscate);
static void print_html_footer(GString *out, bool obfuscate);
static void print_latex_header(GString *out, element *elt);
static void print_latex_footer(GString *out);
static void print_memoir_element_list(GString *out, element *list);
static void print_memoir_element(GString *out, element *elt);
static void print_beamer_element_list(GString *out, element *list);
static void print_beamer_element(GString *out, element *elt);
static void print_opml_string(GString *out, char *str);
static void print_opml_element_list(GString *out, element *list);
static void print_opml_element(GString *out, element *elt);
static void print_opml_metadata(GString *out, element *elt);
static void print_opml_section_and_children(GString *out, element *list);
element * print_html_headingsection(GString *out, element *list, bool obfuscate);
static bool is_html_complete_doc(element *meta);
static int find_latex_mode(int format, element *list);
element * metadata_for_key(char *key, element *list);
char * metavalue_for_key(char *key, element *list);
element * element_for_attribute(char *querystring, element *list);
char * dimension_for_attribute(char *querystring, element *list);
element * locator_for_citation(element *elt);
/**********************************************************************
Utility functions for printing
***********************************************************************/
static int padded = 2; /* Number of newlines after last output.
Starts at 2 so no newlines are needed at start.
*/
static GSList *endnotes = NULL; /* List of endnotes to print after main content. */
static int notenumber = 0; /* Number of footnote. */
/* pad - add newlines if needed */
static void pad(GString *out, int num) {
while (num-- > padded)
g_string_append_printf(out, "\n");;
padded = num;
}
/* determine whether a certain element is contained within a given list */
static bool list_contains_key(element *list, int key) {
element *step = NULL;
step = list;
while ( step != NULL ) {
if (step->key == key) {
return TRUE;
}
if (step->children != NULL) {
if (list_contains_key(step->children, key)) {
return TRUE;
}
}
step = step->next;
}
return FALSE;
}
/**********************************************************************
Functions for printing Elements as HTML
***********************************************************************/
/* print_html_string - print string, escaping for HTML
* If obfuscate selected, convert characters to hex or decimal entities at random */
static void print_html_string(GString *out, char *str, bool obfuscate) {
while (*str != '\0') {
switch (*str) {
case '&':
g_string_append_printf(out, "&");
break;
case '<':
g_string_append_printf(out, "<");
break;
case '>':
g_string_append_printf(out, ">");
break;
case '"':
g_string_append_printf(out, """);
break;
default:
if (obfuscate && ((int) *str < 128) && ((int) *str >= 0)){
if (rand() % 2 == 0)
g_string_append_printf(out, "&#%d;", (int) *str);
else
g_string_append_printf(out, "&#x%x;", (unsigned int) *str);
}
else
g_string_append_c(out, *str);
}
str++;
}
}
/* print_html_element_list - print a list of elements as HTML */
static void print_html_element_list(GString *out, element *list, bool obfuscate) {
while (list != NULL) {
if (list->key == HEADINGSECTION) {
list = print_html_headingsection(out, list, obfuscate);
} else {
print_html_element(out, list, obfuscate);
list = list->next;
}
}
}
/* add_endnote - add an endnote to global endnotes list. */
static void add_endnote(element *elt) {
endnotes = g_slist_prepend(endnotes, elt);
}
/* print_html_element - print an element as HTML */
static void print_html_element(GString *out, element *elt, bool obfuscate) {
int lev;
char *label;
element *attribute;
element *locator = NULL;
char *height;
char *width;
switch (elt->key) {
case SPACE:
g_string_append_printf(out, "%s", elt->contents.str);
break;
case LINEBREAK:
g_string_append_printf(out, "<br/>\n");
break;
case STR:
print_html_string(out, elt->contents.str, obfuscate);
break;
case ELLIPSIS:
localize_typography(out, ELLIP, language, HTMLOUT);
break;
case EMDASH:
localize_typography(out, MDASH, language, HTMLOUT);
break;
case ENDASH:
localize_typography(out, NDASH, language, HTMLOUT);
break;
case APOSTROPHE:
localize_typography(out, APOS, language, HTMLOUT);
break;
case SINGLEQUOTED:
localize_typography(out, LSQUOTE, language, HTMLOUT);
print_html_element_list(out, elt->children, obfuscate);
localize_typography(out, RSQUOTE, language, HTMLOUT);
break;
case DOUBLEQUOTED:
localize_typography(out, LDQUOTE, language, HTMLOUT);
print_html_element_list(out, elt->children, obfuscate);
localize_typography(out, RDQUOTE, language, HTMLOUT);
break;
case CODE:
g_string_append_printf(out, "<code>");
print_html_string(out, elt->contents.str, obfuscate);
g_string_append_printf(out, "</code>");
break;
case HTML:
g_string_append_printf(out, "%s", elt->contents.str);
break;
case LINK:
if (strstr(elt->contents.link->url, "mailto:") == elt->contents.link->url)
obfuscate = true; /* obfuscate mailto: links */
g_string_append_printf(out, "<a href=\"");
print_html_string(out, elt->contents.link->url, obfuscate);
g_string_append_printf(out, "\"");
if (strlen(elt->contents.link->title) > 0) {
g_string_append_printf(out, " title=\"");
print_html_string(out, elt->contents.link->title, obfuscate);
g_string_append_printf(out, "\"");
}
print_html_element_list(out, elt->contents.link->attr, obfuscate);
g_string_append_printf(out, ">");
print_html_element_list(out, elt->contents.link->label, obfuscate);
g_string_append_printf(out, "</a>");
break;
case IMAGEBLOCK:
pad(out, 2);
case IMAGE:
if (elt->key == IMAGEBLOCK) {
g_string_append_printf(out, "<figure>\n");
}
g_string_append_printf(out, "<img src=\"");
print_html_string(out, elt->contents.link->url, obfuscate);
g_string_append_printf(out, "\" alt=\"");
print_raw_element_list(out,elt->contents.link->label);
if ( (extension(EXT_COMPATIBILITY)) ||
(strcmp(elt->contents.link->identifier, "") == 0) ) {
g_string_append_printf(out, "\"");
} else {
if (!(extension(EXT_COMPATIBILITY))) {
g_string_append_printf(out, "\" id=\"%s\"",elt->contents.link->identifier);
}
}
if (strlen(elt->contents.link->title) > 0) {
g_string_append_printf(out, " title=\"");
print_html_string(out, elt->contents.link->title, obfuscate);
g_string_append_printf(out, "\"");
}
width = NULL;
height = NULL;
attribute = element_for_attribute("height", elt->contents.link->attr);
if (attribute != NULL) {
height = strdup(attribute->children->contents.str);
}
attribute = element_for_attribute("width", elt->contents.link->attr);
if (attribute != NULL) {
width = strdup(attribute->children->contents.str);
}
if ((height != NULL) || (width != NULL)) {
g_string_append_printf(out, " style=\"");
if (height != NULL)
g_string_append_printf(out, "height:%s;", height);
if (width != NULL)
g_string_append_printf(out, "width:%s;", width);
g_string_append_printf(out, "\"");
}
print_html_element_list(out, elt->contents.link->attr, obfuscate);
g_string_append_printf(out, " />");
if (elt->key == IMAGEBLOCK) {
if (elt->contents.link->label != NULL) {
g_string_append_printf(out, "\n<figcaption>");
print_html_element_list(out, elt->contents.link->label, obfuscate);
g_string_append_printf(out, "</figcaption>");
}
g_string_append_printf(out, "</figure>\n");
}
free(height);
free(width);
break;
case EMPH:
g_string_append_printf(out, "<em>");
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</em>");
break;
case STRONG:
g_string_append_printf(out, "<strong>");
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</strong>");
break;
case LIST:
print_html_element_list(out, elt->children, obfuscate);
break;
case RAW:
/* Shouldn't occur - these are handled by process_raw_blocks() */
assert(elt->key != RAW);
break;
case H1: case H2: case H3: case H4: case H5: case H6:
lev = elt->key - H1 + base_header_level; /* assumes H1 ... H6 are in order */
if (lev > 6)
lev = 6;
pad(out, 2);
if ( extension(EXT_COMPATIBILITY)) {
/* Use regular Markdown header format */
g_string_append_printf(out, "<h%1d>", lev);
print_html_element_list(out, elt->children, obfuscate);
} else if (elt->children->key == AUTOLABEL) {
/* use label for header since one was specified (MMD)*/
g_string_append_printf(out, "<h%d id=\"%s\">", lev,elt->children->contents.str);
print_html_element_list(out, elt->children->next, obfuscate);
} else if ( extension(EXT_NO_LABELS)) {
/* Don't generate a label */
g_string_append_printf(out, "<h%1d>", lev);
print_html_element_list(out, elt->children, obfuscate);
} else {
/* generate a label by default for MMD */
label = label_from_element_list(elt->children, obfuscate);
g_string_append_printf(out, "<h%d id=\"%s\">", lev, label);
print_html_element_list(out, elt->children, obfuscate);
free(label);
}
g_string_append_printf(out, "</h%1d>", lev);
padded = 0;
break;
case PLAIN:
pad(out, 1);
print_html_element_list(out, elt->children, obfuscate);
padded = 0;
break;
case PARA:
pad(out, 2);
g_string_append_printf(out, "<p>");
print_html_element_list(out, elt->children, obfuscate);
if (am_printing_html_footnote && ( elt->next == NULL)) {
g_string_append_printf(out, " <a href=\"#fnref:%d\" title=\"return to article\" class=\"reversefootnote\"> ↩</a>", footnote_counter_to_print);
/* Only print once. For now, it's the first paragraph, until
I can figure out to make it the last paragraph */
am_printing_html_footnote = FALSE;
}
g_string_append_printf(out, "</p>");
padded = 0;
break;
case HRULE:
pad(out, 2);
g_string_append_printf(out, "<hr />");
padded = 0;
break;
case HTMLBLOCK:
pad(out, 2);
g_string_append_printf(out, "%s", elt->contents.str);
padded = 0;
break;
case VERBATIM:
pad(out, 2);
g_string_append_printf(out, "%s", "<pre><code>");
print_html_string(out, elt->contents.str, obfuscate);
g_string_append_printf(out, "%s", "</code></pre>");
padded = 0;
break;
case BULLETLIST:
pad(out, 2);
g_string_append_printf(out, "%s", "<ul>");
padded = 0;
print_html_element_list(out, elt->children, obfuscate);
pad(out, 1);
g_string_append_printf(out, "%s", "</ul>");
padded = 0;
break;
case ORDEREDLIST:
pad(out, 2);
g_string_append_printf(out, "%s", "<ol>");
padded = 0;
print_html_element_list(out, elt->children, obfuscate);
pad(out, 1);
g_string_append_printf(out, "</ol>");
padded = 0;
break;
case LISTITEM:
pad(out, 1);
g_string_append_printf(out, "<li>");
padded = 2;
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</li>");
padded = 0;
break;
case BLOCKQUOTE:
pad(out, 2);
g_string_append_printf(out, "<blockquote>\n");
padded = 2;
print_html_element_list(out, elt->children, obfuscate);
pad(out, 1);
g_string_append_printf(out, "</blockquote>");
padded = 0;
break;
case REFERENCE:
/* Nonprinting */
break;
case NOTELABEL:
/* Nonprinting */
break;
case NOTE:
/* if contents.str == 0, then print note; else ignore, since this
* is a note block that has been incorporated into the notes list */
if (elt->contents.str == 0) {
if (elt->children->contents.str == 0) {
/* The referenced note has not been used before */
add_endnote(elt->children);
++notenumber;
char buf[5];
sprintf(buf,"%d",notenumber);
/* Assign footnote number for future use */
elt->children->contents.str = strdup(buf);
if (elt->children->key == GLOSSARYTERM) {
g_string_append_printf(out, "<a href=\"#fn:%d\" id=\"fnref:%d\" title=\"see footnote\" class=\"footnote glossary\">[%d]</a>",
notenumber, notenumber, notenumber);
} else {
g_string_append_printf(out, "<a href=\"#fn:%d\" id=\"fnref:%d\" title=\"see footnote\" class=\"footnote\">[%d]</a>",
notenumber, notenumber, notenumber);
}
} else {
/* The referenced note has already been used */
g_string_append_printf(out, "<a href=\"#fn:%s\" title=\"see footnote\" class=\"footnote\">[%s]</a>",
elt->children->contents.str, elt->children->contents.str);
}
}
elt->children = NULL;
break;
case GLOSSARY:
/* Shouldn't do anything */
break;
case GLOSSARYTERM:
g_string_append_printf(out,"<span class=\"glossary name\">");
print_html_string(out, elt->children->contents.str, obfuscate);
g_string_append_printf(out, "</span>");
if ((elt->next != NULL) && (elt->next->key == GLOSSARYSORTKEY) ) {
g_string_append_printf(out, "<span class=\"glossary sort\" style=\"display:none\">");
print_html_string(out, elt->next->contents.str, obfuscate);
g_string_append_printf(out, "</span>");
}
g_string_append_printf(out, ": ");
break;
case GLOSSARYSORTKEY:
break;
case NOCITATION:
case CITATION:
/* Get locator, if present */
locator = locator_for_citation(elt);
if (strncmp(elt->contents.str,"[#",2) == 0) {
/* reference specified externally */
if ( elt->key == NOCITATION ) {
/* work not cited, but used in bibliography for LaTeX */
g_string_append_printf(out, "<span class=\"notcited\" id=\"%s\"/>", elt->contents.str);
} else {
/* work was cited, so output normally */
g_string_append_printf(out, "<span class=\"externalcitation\">");
if (locator != NULL) {
g_string_append_printf(out, "[");
print_html_element(out,locator,obfuscate);
g_string_append_printf(out, "]");
}
g_string_append_printf(out, "%s",elt->contents.str);
g_string_append_printf(out, "</span>");
}
} else {
/* reference specified within the MMD document,
so will output as footnote */
if (elt->children->contents.str == NULL) {
/* Work not previously cited in this document,
so create "endnote" */
elt->children->key = CITATION;
add_endnote(elt->children);
++notenumber;
char buf[5];
sprintf(buf,"%d",notenumber);
/* Store the number for future reference */
elt->children->contents.str = strdup(buf);
}
if (locator != NULL) {
if ( elt->key == NOCITATION ) {
g_string_append_printf(out, "<span class=\"notcited\" id=\"%s\">",
elt->children->contents.str);
} else {
g_string_append_printf(out, "<a class=\"citation\" href=\"#fn:%s\" title=\"Jump to citation\">[<span class=\"locator\">", elt->children->contents.str);
print_html_element(out,locator,obfuscate);
g_string_append_printf(out,"</span>, %s]",
elt->children->contents.str);
}
} else {
g_string_append_printf(out, "<a class=\"citation\" href=\"#fn:%s\" title=\"Jump to citation\">[%s]",
elt->children->contents.str, elt->children->contents.str);
}
/* Now prune children since will likely be shared elsewhere */
elt->children = NULL;
g_string_append_printf(out, "<span class=\"citekey\" style=\"display:none\">%s</span>", elt->contents.str);
if ((locator != NULL) && (elt->key == NOCITATION)) {
g_string_append_printf(out,"</span>");
} else {
g_string_append_printf(out,"</a>");
}
}
break;
case LOCATOR:
print_html_element_list(out, elt->children, obfuscate);
break;
case DEFLIST:
pad(out,1);
padded = 1;
g_string_append_printf(out, "<dl>\n");
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</dl>\n");
padded = 0;
break;
case TERM:
pad(out,1);
g_string_append_printf(out, "<dt>");
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</dt>\n");
padded = 1;
break;
case DEFINITION:
pad(out,1);
padded = 1;
g_string_append_printf(out, "<dd>");
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</dd>\n");
padded = 0;
break;
case METADATA:
/* Metadata is present, so this should be a "complete" document */
html_footer = is_html_complete_doc(elt);
if (html_footer) {
print_html_header(out, elt, obfuscate);
} else {
print_html_element_list(out, elt->children, obfuscate);
}
break;
case METAKEY:
if (strcmp(elt->contents.str, "title") == 0) {
g_string_append_printf(out, "\t<title>");
print_html_element(out, elt->children, obfuscate);
g_string_append_printf(out, "</title>\n");
} else if (strcmp(elt->contents.str, "css") == 0) {
g_string_append_printf(out, "\t<link type=\"text/css\" rel=\"stylesheet\" href=\"");
print_html_element(out, elt->children, obfuscate);
g_string_append_printf(out, "\"/>\n");
} else if (strcmp(elt->contents.str, "xhtmlheader") == 0) {
print_raw_element(out, elt->children);
g_string_append_printf(out, "\n");
} else if (strcmp(elt->contents.str, "htmlheader") == 0) {
print_raw_element(out, elt->children);
g_string_append_printf(out, "\n");
} else if (strcmp(elt->contents.str, "baseheaderlevel") == 0) {
base_header_level = atoi(elt->children->contents.str);
} else if (strcmp(elt->contents.str, "xhtmlheaderlevel") == 0) {
base_header_level = atoi(elt->children->contents.str);
} else if (strcmp(elt->contents.str, "htmlheaderlevel") == 0) {
base_header_level = atoi(elt->children->contents.str);
} else if (strcmp(elt->contents.str, "quoteslanguage") == 0) {
label = label_from_element_list(elt->children, 0);
if (strcmp(label, "dutch") == 0) { language = DUTCH; } else
if (strcmp(label, "german") == 0) { language = GERMAN; } else
if (strcmp(label, "germanguillemets") == 0) { language = GERMANGUILL; } else
if (strcmp(label, "french") == 0) { language = FRENCH; } else
if (strcmp(label, "swedish") == 0) { language = SWEDISH; }
free(label);
} else {
g_string_append_printf(out, "\t<meta name=\"");
print_html_string(out, elt->contents.str, obfuscate);
g_string_append_printf(out, "\" content=\"");
print_html_element(out, elt->children, obfuscate);
g_string_append_printf(out, "\"/>\n");
}
break;
case METAVALUE:
print_html_string(out, elt->contents.str, obfuscate);
break;
case FOOTER:
break;
case HEADINGSECTION:
print_html_element_list(out, elt->children, obfuscate);
break;
case TABLE:
g_string_append_printf(out, "\n\n<table>\n");
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</table>\n");
break;
case TABLESEPARATOR:
table_alignment = elt->contents.str;
break;
case TABLECAPTION:
if (elt->children->key == TABLELABEL) {
label = label_from_element_list(elt->children->children,obfuscate);
} else {
label = label_from_element_list(elt->children,obfuscate);
}
g_string_append_printf(out, "<caption id=\"%s\">", label);
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</caption>\n");
free(label);
break;
case TABLELABEL:
break;
case TABLEHEAD:
/* print column alignment for XSLT processing if needed */
g_string_append_printf(out, "<colgroup>\n");
for (table_column=0;table_column<strlen(table_alignment);table_column++) {
if ( strncmp(&table_alignment[table_column],"r",1) == 0) {
g_string_append_printf(out, "<col style=\"text-align:right;\"/>\n");
} else if ( strncmp(&table_alignment[table_column],"R",1) == 0) {
g_string_append_printf(out, "<col style=\"text-align:right;\" class=\"extended\"/>\n");
} else if ( strncmp(&table_alignment[table_column],"c",1) == 0) {
g_string_append_printf(out, "<col style=\"text-align:center;\"/>\n");
} else if ( strncmp(&table_alignment[table_column],"C",1) == 0) {
g_string_append_printf(out, "<col style=\"text-align:center;\" class=\"extended\"/>\n");
} else if ( strncmp(&table_alignment[table_column],"L",1) == 0) {
g_string_append_printf(out, "<col style=\"text-align:left;\" class=\"extended\"/>\n");
} else {
g_string_append_printf(out, "<col style=\"text-align:left;\"/>\n");
}
}
g_string_append_printf(out, "</colgroup>\n");
cell_type = 'h';
g_string_append_printf(out, "\n<thead>\n");
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</thead>\n");
cell_type = 'd';
break;
case TABLEBODY:
g_string_append_printf(out, "\n<tbody>\n");
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</tbody>\n");
break;
case TABLEROW:
g_string_append_printf(out, "<tr>\n");
table_column = 0;
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</tr>\n");
break;
case TABLECELL:
if ( strncmp(&table_alignment[table_column],"r",1) == 0) {
g_string_append_printf(out, "\t<t%c style=\"text-align:right;\"", cell_type);
} else if ( strncmp(&table_alignment[table_column],"R",1) == 0) {
g_string_append_printf(out, "\t<t%c style=\"text-align:right;\"", cell_type);
} else if ( strncmp(&table_alignment[table_column],"c",1) == 0) {
g_string_append_printf(out, "\t<t%c style=\"text-align:center;\"", cell_type);
} else if ( strncmp(&table_alignment[table_column],"C",1) == 0) {
g_string_append_printf(out, "\t<t%c style=\"text-align:center;\"", cell_type);
} else {
g_string_append_printf(out, "\t<t%c style=\"text-align:left;\"", cell_type);
}
if ((elt->children != NULL) && (elt->children->key == CELLSPAN)) {
g_string_append_printf(out, " colspan=\"%d\"",(int)strlen(elt->children->contents.str)+1);
}
g_string_append_printf(out, ">");
padded = 2;
print_html_element_list(out, elt->children, obfuscate);
g_string_append_printf(out, "</t%c>\n", cell_type);
table_column++;
break;
case CELLSPAN:
break;
case ATTRKEY:
if ( (strcmp(elt->contents.str,"height") == 0) ||
(strcmp(elt->contents.str, "width") == 0)) {
} else {
g_string_append_printf(out, " %s=\"%s\"", elt->contents.str,
elt->children->contents.str);
}
break;
case MATHSPAN:
if ( elt->contents.str[strlen(elt->contents.str)-1] == ']') {
elt->contents.str[strlen(elt->contents.str)-3] = '\0';
g_string_append_printf(out, "<span class=\"math\">%s\\]</span>", elt->contents.str);
} else {
elt->contents.str[strlen(elt->contents.str)-3] = '\0';
g_string_append_printf(out, "<span class=\"math\">%s\\)</span>", elt->contents.str);
}
break;
default:
fprintf(stderr, "print_html_element encountered unknown element key = %d\n", elt->key);
exit(EXIT_FAILURE);
}
}
static void print_html_endnotes(GString *out) {
int counter = 0;
GSList *note;
element *note_elt;
if (endnotes == NULL)
return;
note = g_slist_reverse(endnotes);
g_string_append_printf(out, "<div class=\"footnotes\">\n<hr />\n<ol>");
while (note != NULL) {
note_elt = note->data;
counter++;
pad(out, 1);
if (note_elt->key == CITATION) {
g_string_append_printf(out, "<li id=\"fn:%s\" class=\"citation\"><span class=\"citekey\" style=\"display:none\">", note_elt->contents.str);
element *temp = note_elt;
while ( temp != NULL ) {
if (temp->key == NOTELABEL)
print_html_string(out, temp->contents.str, 0);
temp = temp->next;
}
g_string_append_printf(out, "</span>");
padded = 2;
print_html_element_list(out, note_elt->children, false);
pad(out, 1);
g_string_append_printf(out, "</li>");
} else {
g_string_append_printf(out, "<li id=\"fn:%d\">\n", counter);
padded = 2;
am_printing_html_footnote = TRUE;
footnote_counter_to_print = counter;
print_html_element_list(out, note_elt, false);
am_printing_html_footnote = FALSE;
footnote_counter_to_print = 0;
pad(out, 1);
g_string_append_printf(out, "</li>");
}
note = note->next;
}
pad(out, 1);
g_string_append_printf(out, "</ol>\n</div>\n");
g_slist_free(endnotes);
}
/**********************************************************************
Functions for printing Elements as LaTeX
***********************************************************************/
/* print_latex_string - print string, escaping for LaTeX */
static void print_latex_string(GString *out, char *str) {
char *tmp;
while (*str != '\0') {
switch (*str) {
case '{': case '}': case '$': case '%':
case '&': case '_': case '#':
g_string_append_printf(out, "\\%c", *str);
break;
case '^':
g_string_append_printf(out, "\\^{}");
break;
case '\\':
g_string_append_printf(out, "\\textbackslash{}");
break;
case '~':
g_string_append_printf(out, "\\ensuremath{\\sim}");
break;
case '|':
g_string_append_printf(out, "\\textbar{}");
break;
case '<':
g_string_append_printf(out, "$<$");
break;
case '>':
g_string_append_printf(out, "$>$");
break;
case '/':
str++;
while (*str == '/') {
g_string_append_printf(out, "/");
str++;
}
g_string_append_printf(out, "\\slash ");
str--;
break;
case '\n':
tmp = str;
tmp--;
if (*tmp == ' ') {
tmp--;
if (*tmp == ' ') {
g_string_append_printf(out, "\\\\\n");
} else {
g_string_append_printf(out, "\n");
}
} else {
g_string_append_printf(out, "\n");
}
break;
default:
g_string_append_c(out, *str);
}
str++;
}
}
static void print_latex_endnotes(GString *out) {
GSList *note;
element *note_elt;
if (endnotes == NULL)
return;
note = g_slist_reverse(endnotes);
pad(out,2);
g_string_append_printf(out, "\\begin{thebibliography}{0}");
while (note != NULL) {
note_elt = note->data;
pad(out, 1);
g_string_append_printf(out, "\\bibitem{%s}\n", note_elt->contents.str);
padded=2;
print_latex_element_list(out, note_elt);
pad(out, 1);
note = note->next;
}
pad(out, 1);
g_string_append_printf(out, "\\end{thebibliography}\n");
padded = 1;
g_slist_free(endnotes);
}
/* print_latex_element_list - print a list of elements as LaTeX */
static void print_latex_element_list(GString *out, element *list) {
while (list != NULL) {
print_latex_element(out, list);
list = list->next;
}
}
/* print_latex_element - print an element as LaTeX */
static void print_latex_element(GString *out, element *elt) {
int lev;
char *label;
char *height;
char *width;
char *upper;
int i;
double floatnum;
switch (elt->key) {
case SPACE:
g_string_append_printf(out, "%s", elt->contents.str);
break;
case LINEBREAK:
g_string_append_printf(out, "\\\\\n");
break;
case STR:
print_latex_string(out, elt->contents.str);
break;
case ELLIPSIS:
localize_typography(out, ELLIP, language, LATEXOUT);
break;
case EMDASH:
localize_typography(out, MDASH, language, LATEXOUT);
break;
case ENDASH:
localize_typography(out, NDASH, language, LATEXOUT);
break;
case APOSTROPHE:
localize_typography(out, APOS, language, LATEXOUT);
break;
case SINGLEQUOTED:
localize_typography(out, LSQUOTE, language, LATEXOUT);
print_latex_element_list(out, elt->children);
localize_typography(out, RSQUOTE, language, LATEXOUT);
break;
case DOUBLEQUOTED:
localize_typography(out, LDQUOTE, language, LATEXOUT);
print_latex_element_list(out, elt->children);
localize_typography(out, RDQUOTE, language, LATEXOUT);
break;
case CODE:
g_string_append_printf(out, "\\texttt{");
print_latex_string(out, elt->contents.str);
g_string_append_printf(out, "}");
break;
case HTML:
/* don't print HTML */
/* but do print HTML comments for raw LaTeX */
if (strncmp(elt->contents.str,"<!--",4) == 0) {
/* trim "-->" from end */
elt->contents.str[strlen(elt->contents.str)-3] = '\0';
g_string_append_printf(out, "%s", &elt->contents.str[4]);
}
break;
case LINK:
if (elt->contents.link->url[0] == '#') {
/* This is a link to anchor within document */
label = label_from_string(elt->contents.link->url,0);
if (elt->contents.link->label != NULL) {
print_latex_element_list(out, elt->contents.link->label);
g_string_append_printf(out, " (\\autoref{%s})", label);
} else {
g_string_append_printf(out, "\\autoref{%s}", label);
}
free(label);
} else if ( (elt->contents.link->label != NULL) &&
( elt->contents.link->label->contents.str != NULL) &&
( strcmp(elt->contents.link->label->contents.str,
elt->contents.link->url) == 0 )) {
/* This is a <link> */
g_string_append_printf(out, "\\href{%s}{", elt->contents.link->url);
print_latex_string(out, elt->contents.link->url);
g_string_append_printf(out, "}");
} else if ( (elt->contents.link->label != NULL) &&
( elt->contents.link->label->contents.str != NULL) &&
( strcmp(&elt->contents.link->url[7],
elt->contents.link->label->contents.str) == 0 )) {
/* This is a <mailto> */
g_string_append_printf(out, "\\href{%s}{%s}", elt->contents.link->url, &elt->contents.link->url[7]);
} else {
/* This is a [text](link) */
g_string_append_printf(out, "\\href{%s}{", elt->contents.link->url);
print_latex_element_list(out, elt->contents.link->label);
g_string_append_printf(out, "}");
if ( no_latex_footnote == FALSE ) {
g_string_append_printf(out, "\\footnote{\\href{%s}{", elt->contents.link->url);
print_latex_string(out, elt->contents.link->url);
g_string_append_printf(out, "}}");
}
}
break;
case IMAGEBLOCK:
pad(out, 2);
case IMAGE:
/* Figure if we have height, width, neither */
height = dimension_for_attribute("height", elt->contents.link->attr);
width = dimension_for_attribute("width", elt->contents.link->attr);
if (elt->key == IMAGEBLOCK) {
g_string_append_printf(out, "\\begin{figure}[htbp]\n\\centering\n");
}
g_string_append_printf(out, "\\includegraphics[");
if ((height == NULL) && (width == NULL)) {
/* No dimensions given */
g_string_append_printf(out,"keepaspectratio,width=\\textwidth,height=0.75\\textheight");
} else {
/* at least one dimension given */
if ((height != NULL) && (width != NULL)) {
} else {
g_string_append_printf(out, "keepaspectratio,");
}
if (width != NULL) {
if (width[strlen(width)-1] == '%') {
width[strlen(width)-1] = '\0';
floatnum = strtod(width, NULL);
floatnum = floatnum/100;
g_string_append_printf(out,"width=%.4f\\textwidth,", floatnum);
} else {
g_string_append_printf(out,"width=%s,", width);
}
} else {
g_string_append_printf(out, "width=\\textwidth,");
}
if (height != NULL) {
if (height[strlen(height)-1] == '%') {
height[strlen(height)-1] = '\0';
floatnum = strtod(height, NULL);
floatnum = floatnum/100;
g_string_append_printf(out,"height=%.4f\\textheight,", floatnum);
} else {
g_string_append_printf(out,"height=%s",height);
}
} else {
g_string_append_printf(out, "height=0.75\\textheight");
}
}
g_string_append_printf(out, "]{%s}\n", elt->contents.link->url);
if (elt->key == IMAGEBLOCK) {
if (elt->contents.link->label != NULL) {
g_string_append_printf(out, "\\caption{");
print_latex_element_list(out, elt->contents.link->label);
g_string_append_printf(out, "}\n");
}
g_string_append_printf(out, "\\label{%s}\n", elt->contents.link->identifier);
g_string_append_printf(out,"\\end{figure}\n");
}
free(height);
free(width);
break;
case EMPH:
g_string_append_printf(out, "\\emph{");