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/*
* "$Id: toc.cpp,v 1.11 1999/01/04 17:45:23 mike Exp $"
*
* Table of contents generator for HTMLDOC, a HTML document processing
* program.
*
* Copyright 1997-1999 by Michael Sweet.
*
* HTMLDOC is distributed under the terms of the GNU General Public License
* which is described in the file "COPYING-2.0".
*
* Contents:
*
* toc_build() - Build a table of contents of the given HTML tree.
* add_heading() - Add heading records to the given toc entry...
* parse_tree() - Parse headings from the given tree...
*/
/*
* Include necessary headers.
*/
#include "htmldoc.h"
/*
* Local functions...
*/
static void parse_tree(tree_t *t);
/*
* Local globals...
*/
static uchar heading_numbers[7],
heading_types[7] = { '1', '1', '1', '1', '1', '1', '1' };
static int last_level;
static tree_t *heading_parents[7];
/*
* 'toc_build()' - Build a table of contents of the given HTML tree.
*/
tree_t * /* O - Table of contents tree */
toc_build(tree_t *tree) /* I - Document tree */
{
tree_t *toc, /* TOC tree pointer */
*title, /* Title entry */
*link; /* Link entry */
TocDocCount = 0;
last_level = 0; /* Currently at the "top" level */
heading_numbers[0] = 0; /* Start at 1 (see below) */
toc = htmlAddTree(NULL, MARKUP_BODY, NULL);
title = htmlAddTree(toc, MARKUP_H1, NULL);
htmlSetVariable(title, (uchar *)"ALIGN", (uchar *)"CENTER");
link = htmlAddTree(title, MARKUP_A, NULL);
htmlSetVariable(link, (uchar *)"NAME", (uchar *)"CONTENTS");
htmlAddTree(link, MARKUP_NONE, (uchar *)"Table of Contents");
heading_parents[0] = toc;
heading_parents[1] = toc;
heading_parents[2] = toc;
heading_parents[3] = toc;
heading_parents[4] = toc;
heading_parents[5] = toc;
heading_parents[6] = toc;
parse_tree(tree);
return (toc);
}
/*
* 'add_heading()' - Add heading records to the given toc entry...
*/
void
add_heading(tree_t *toc, /* I - Table of contents */
tree_t *heading) /* I - Heading entry */
{
while (heading != NULL)
{
if (heading->child != NULL)
add_heading(toc, heading->child);
else if (heading->markup == MARKUP_NONE && heading->data != NULL)
htmlAddTree(toc, MARKUP_NONE, heading->data);
heading = heading->next;
};
}
/*
* 'parse_tree()' - Parse headings from the given tree...
*
* Note: We also add anchor points and numbers as necessary...
*/
static void /* O - Tree of TOC entries */
parse_tree(tree_t *t) /* I - Document tree */
{
tree_t *parent; /* Parent of toc entry (DD or LI) */
tree_t *target, /* Link target */
*temp; /* Looping var */
uchar heading[255], /* Heading numbers */
link[255], /* Link */
baselink[255]; /* Base link numbers */
int i, level; /* Header level */
uchar *var; /* Starting value/type for this level */
static char *ones[10] =
{
"", "i", "ii", "iii", "iv",
"v", "vi", "vii", "viii", "ix"
},
*tens[10] =
{
"", "x", "xx", "xxx", "xl",
"l", "lx", "lxx", "lxxx", "xc"
},
*hundreds[10] =
{
"", "c", "cc", "ccc", "cd",
"d", "dc", "dcc", "dccc", "cm"
},
*ONES[10] =
{
"", "I", "II", "III", "IV",
"V", "VI", "VII", "VIII", "IX"
},
*TENS[10] =
{
"", "X", "XX", "XXX", "XL",
"L", "LX", "LXX", "LXXX", "XC"
},
*HUNDREDS[10] =
{
"", "C", "CC", "CCC", "CD",
"D", "DC", "DCC", "DCCC", "CM"
};
while (t != NULL)
{
switch (t->markup)
{
case MARKUP_H1 :
case MARKUP_H2 :
case MARKUP_H3 :
case MARKUP_H4 :
case MARKUP_H5 :
case MARKUP_H6 :
case MARKUP_H7 :
level = t->markup - MARKUP_H1;
if ((var = htmlGetVariable(t, (uchar *)"VALUE")) != NULL)
heading_numbers[level] = atoi((char *)var);
else
heading_numbers[level] ++;
if (level == 0)
TocDocCount ++;
if ((var = htmlGetVariable(t, (uchar *)"TYPE")) != NULL)
heading_types[level] = var[0];
for (i = level + 1; i < 7; i ++)
heading_numbers[i] = 0;
heading[0] = '\0';
baselink[0] = '\0';
for (i = 0; i <= level; i ++)
{
if (i == 0)
sprintf((char *)baselink + strlen((char *)baselink), "%d", TocDocCount);
else
sprintf((char *)baselink + strlen((char *)baselink), "%d", heading_numbers[i]);
switch (heading_types[i])
{
case '1' :
sprintf((char *)heading + strlen((char *)heading), "%d", heading_numbers[i]);
break;
case 'a' :
if (heading_numbers[i] > 26)
sprintf((char *)heading + strlen((char *)heading), "%c%c",
'a' + (heading_numbers[i] / 26) - 1,
'a' + (heading_numbers[i] % 26) - 1);
else
sprintf((char *)heading + strlen((char *)heading), "%c",
'a' + heading_numbers[i] - 1);
break;
case 'A' :
if (heading_numbers[i] > 26)
sprintf((char *)heading + strlen((char *)heading), "%c%c",
'A' + (heading_numbers[i] / 26) - 1,
'A' + (heading_numbers[i] % 26) - 1);
else
sprintf((char *)heading + strlen((char *)heading), "%c",
'A' + heading_numbers[i] - 1);
break;
case 'i' :
sprintf((char *)heading + strlen((char *)heading), "%s%s%s",
hundreds[heading_numbers[i] / 100],
tens[(heading_numbers[i] / 10) % 10],
ones[heading_numbers[i] % 10]);
break;
case 'I' :
sprintf((char *)heading + strlen((char *)heading), "%s%s%s",
HUNDREDS[heading_numbers[i] / 100],
TENS[(heading_numbers[i] / 10) % 10],
ONES[heading_numbers[i] % 10]);
break;
};
if (i < level)
{
strcat((char *)heading, ".");
strcat((char *)baselink, "_");
};
};
strcat((char *)heading, " ");
if (TocNumbers)
htmlInsertTree(t, MARKUP_NONE, heading);
if (level < TocLevels)
{
if (level > last_level)
heading_parents[level] = htmlAddTree(heading_parents[level - 1],
MARKUP_UL, NULL);
if (level == 0)
{
if (last_level == 0)
{
htmlAddTree(heading_parents[level], MARKUP_BR, NULL);
htmlAddTree(heading_parents[level], MARKUP_BR, NULL);
};
parent = htmlAddTree(heading_parents[level], MARKUP_B, NULL);
}
else
parent = htmlAddTree(heading_parents[level], MARKUP_LI, NULL);
if (TocLinks)
{
/*
* Add a link for the toc...
*/
if (OutputFiles)
sprintf((char *)link, "doc%d.html", TocDocCount);
else
link[0] = '\0';
sprintf((char *)link + strlen((char *)link), "#%s", baselink);
parent = htmlAddTree(parent, MARKUP_A, NULL);
htmlSetVariable(parent, (uchar *)"HREF", link);
/*
* Insert a NAME marker and reparent all the heading children.
*/
target = htmlNewTree(t, MARKUP_A, NULL);
htmlSetVariable(target, (uchar *)"NAME", baselink);
for (temp = t->child; temp != NULL; temp = temp->next)
temp->parent = target;
target->child = t->child;
t->child = target;
};
add_heading(parent, t->child);
};
last_level = level;
break;
default :
if (t->child != NULL)
parse_tree(t->child);
break;
};
t = t->next;
};
}
/*
* End of "$Id: toc.cpp,v 1.11 1999/01/04 17:45:23 mike Exp $".
*/
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