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|
#include <config.h>
#include "gdb3html.h"
#include "toc-elements.h"
#include "sect-elements.h"
#include "sect-preparse.h"
#include "gnome.h"
#if 0
#define ERROR_OUTPUT
#endif
/* Generic Function. Used by toc_elements and sect_preparse */
void
sect1_start_element (Context *context,
const char *name,
const xmlChar **atrs)
{
char **atrs_ptr;
atrs_ptr = (char **) atrs;
while (atrs_ptr && *atrs_ptr) {
if (g_strcasecmp (*atrs_ptr, "id") == 0) {
atrs_ptr++;
context->sect1id_stack =
g_list_prepend (context->sect1id_stack, g_strdup (*atrs_ptr));
break;
}
atrs_ptr += 2;
}
}
/* Generic functions. Used by both elements and toc_elements */
void
article_start_element (Context *context, const gchar *name, const xmlChar **atrs)
{
g_print ("<HTML>\n");
}
void
article_end_element (Context *context, const gchar *name)
{
/* This should now be covered by the print_footer function */
/* g_print ("</BODY>\n</HTML>\n"); */
}
void
ulink_start_element (Context *context, const gchar *name, const xmlChar **atrs)
{
gint url_found = FALSE;
GSList *list;
gchar **atrs_ptr;
ElementIndex index;
list = g_slist_prepend (NULL, GINT_TO_POINTER (FOOTNOTE));
index = find_first_parent (context, list);
atrs_ptr = (gchar **) atrs;
while (atrs_ptr && *atrs_ptr) {
if (!g_strcasecmp (*atrs_ptr, "url")) {
atrs_ptr++;
if (index == UNDEFINED) {
g_print ("<A HREF=\"%s\">", *atrs_ptr);
} else {
GString *footnote;
list = g_slist_last (context->footnotes);
footnote = (GString *) list->data;
g_string_append (footnote, "<A HREF=\"");
g_string_append (footnote, *atrs_ptr);
g_string_append (footnote, "\">");
}
url_found = TRUE;
break;
}
atrs_ptr += 2;
}
if (!url_found)
g_print ("<A>");
}
void
ulink_end_element (Context *context, const gchar *name)
{
GSList *list;
ElementIndex index;
list = g_slist_prepend (NULL, GINT_TO_POINTER (FOOTNOTE));
index = find_first_parent (context, list);
if (index == UNDEFINED) {
g_print ("</A>\n");
} else {
GString *footnote;
list = g_slist_last (context->footnotes);
footnote = (GString *) list->data;
g_string_append (footnote, "</A>\n");
}
}
void
html_em_start_element (Context *context,
const gchar *name,
const xmlChar **atrs)
{
g_print ("<EM>");
}
void
html_em_end_element (Context *context,
const gchar *name)
{
g_print ("</EM>");
}
void
html_tt_start_element (Context *context,
const gchar *name,
const xmlChar **atrs)
{
g_print ("<TT>");
}
void
html_tt_end_element (Context *context,
const gchar *name)
{
g_print ("</TT>");
}
void
artheader_start_element (Context *context, const gchar *name, const xmlChar **atrs)
{
g_print ("<HEAD>\n");
}
StackElement *
find_first_element (Context *context, GSList *args)
{
GList *ptr;
GSList *element_ptr;
for (ptr = context->stack; ptr; ptr = ptr->next) {
for (element_ptr = args; element_ptr; element_ptr = element_ptr->next) {
if (((StackElement*) ptr->data)->info &&
((StackElement*) ptr->data)->info->index == GPOINTER_TO_INT (element_ptr->data))
return (StackElement *) ptr->data;
}
}
return NULL;
}
ElementIndex
find_first_parent (Context *context, GSList *args)
{
StackElement *stack_el;
stack_el = find_first_element (context, args);
if (stack_el == NULL)
return UNDEFINED;
else
return stack_el->info->index;
}
/* helper functions */
static ElementInfo *
find_element_info (ElementInfo *elements,
const gchar *name)
{
while (elements->name != NULL) {
if (!g_strcasecmp (elements->name, name))
return elements;
elements++;
}
return NULL;
}
/* our callbacks for the xmlSAXHandler */
static xmlEntityPtr
get_entity (Context *context, const char *name)
{
xmlEntityPtr ret;
#ifdef ERROR_OUTPUT
g_print ("in getEntity:%s\n", name);
#endif
ret = getEntity (context->ParserCtxt, name);
/* return xmlGetPredefinedEntity (name); */
return (ret);
}
static void
start_document (Context *context)
{
startDocument (context->ParserCtxt);
}
static void
end_document (Context *context)
{
endDocument (context->ParserCtxt);
}
static void
start_element(Context *context,
const gchar *name,
const xmlChar **attrs)
{
ElementInfo *element;
StackElement *stack_el = g_new0 (StackElement, 1);
startElement (context->ParserCtxt, name, attrs);
element = find_element_info (context->elements, name);
stack_el->info = element;
context->stack = g_list_prepend (context->stack, stack_el);
context->empty_element = TRUE;
if (element && element->start_element_func)
(* element->start_element_func) (context, name, attrs);
if (!g_strcasecmp (name, "xref")) {
context->stack = g_list_remove_link (context->stack, context->stack);
} else if (!g_strcasecmp (name, "void")) {
context->stack = g_list_remove_link (context->stack, context->stack);
}
}
static void
end_element (Context *context,
const gchar *name)
{
ElementInfo *element;
StackElement *stack_el;
gchar **atrs_ptr;
endElement (context->ParserCtxt, name);
element = find_element_info (context->elements, name);
stack_el = (StackElement *) context->stack->data;
if (stack_el->info != element) {
/* Prolly a tag we ignored */
return;
}
if (element && element->end_element_func)
(* element->end_element_func) (context, name);
context->stack = g_list_remove_link (context->stack, context->stack);
atrs_ptr = stack_el->atrs;
while (atrs_ptr && *atrs_ptr) {
g_free (*atrs_ptr);
atrs_ptr++;
};
g_free (stack_el->atrs);
g_free (stack_el);
}
static void
gdb3html_characters (Context *context,
const gchar *chars,
int len)
{
ElementInfo *element;
characters (context->ParserCtxt, chars, len);
if (context->stack == NULL)
return;
element = ((StackElement *)context->stack->data)->info;
context->empty_element = FALSE;
if (element && element->characters_func)
(* element->characters_func) (context, chars, len);
}
static void
gdb3html_comment (Context *context, const char *msg)
{
#ifdef ERROR_OUTPUT
g_log("XML", G_LOG_LEVEL_MESSAGE, "%s", msg);
#endif
}
static void
gdb3html_warning (Context *context, const char *msg, ...)
{
va_list args;
va_start(args, msg);
#ifdef ERROR_OUTPUT
g_logv("XML", G_LOG_LEVEL_WARNING, msg, args);
#endif
va_end(args);
}
static void
gdb3html_error (Context *context, const char *msg, ...)
{
va_list args;
va_start(args, msg);
#ifdef ERROR_OUTPUT
g_logv("XML", G_LOG_LEVEL_CRITICAL, msg, args);
#endif
va_end(args);
}
static void
fatal_error (Context *context, const char *msg, ...)
{
va_list args;
va_start(args, msg);
#ifdef ERROR_OUTPUT
g_logv("XML", G_LOG_LEVEL_ERROR, msg, args);
#endif
va_end(args);
}
static void
cdata_block (Context *context, const xmlChar *value, int len)
{
ElementInfo *element;
StackElement *stack_el = g_new0 (StackElement, 1);
cdataBlock (context->ParserCtxt, value, len);
element = find_element_info (context->elements, "cdata");
stack_el->info = element;
context->stack = g_list_prepend (context->stack, stack_el);
if (element && element->characters_func)
(* element->characters_func) (context, value, len);
context->stack = g_list_remove_link (context->stack, context->stack);
}
static int
gdb3html_isStandalone (Context *context)
{
int ret;
ret = isStandalone (context->ParserCtxt);
return (ret);
}
static int
gdb3html_hasInternalSubset (Context *context)
{
int ret;
ret = hasInternalSubset (context->ParserCtxt);
return (ret);
}
static int
gdb3html_hasExternalSubset (Context *context)
{
int ret;
ret = hasExternalSubset (context->ParserCtxt);
return (ret);
}
static void
gdb3html_internalSubset (Context *context, const xmlChar *name,
const xmlChar *ExternalID, const xmlChar *SystemID)
{
/* This function is copied from SAX.c in libxml so we can 'silence'
* the warning messages */
xmlParserCtxtPtr ctxt;
ctxt = context->ParserCtxt;
xmlCreateIntSubset (ctxt->myDoc, name, ExternalID, SystemID);
if (((ExternalID != NULL) || (SystemID != NULL)) &&
(ctxt->validate && ctxt->wellFormed && ctxt->myDoc)) {
xmlDtdPtr ret = NULL;
xmlParserCtxtPtr dtdCtxt;
xmlParserInputPtr input = NULL;
xmlCharEncoding enc;
dtdCtxt = xmlNewParserCtxt();
if (dtdCtxt == NULL) {
return;
}
/* Ask entity resolve to load it */
if ((ctxt->directory != NULL) && (dtdCtxt->directory == NULL)) {
dtdCtxt->directory = (char *) xmlStrdup (BAD_CAST ctxt->directory);
}
if ((dtdCtxt->sax != NULL) && (dtdCtxt->sax->resolveEntity != NULL)) {
dtdCtxt->sax->warning = (warningSAXFunc) gdb3html_warning;
input = dtdCtxt->sax->resolveEntity (dtdCtxt->userData, ExternalID, SystemID);
}
if (input == NULL) {
xmlFreeParserCtxt (dtdCtxt);
return;
}
/* Plug some encoding conversion routines */
xmlPushInput (dtdCtxt, input);
enc = xmlDetectCharEncoding (dtdCtxt->input->cur);
xmlSwitchEncoding (dtdCtxt, enc);
if (input->filename == NULL) {
input->filename = (char *) xmlStrdup (SystemID);
}
input->line = 1;
input->col = 1;
input->base = dtdCtxt->input->cur;
input->cur = dtdCtxt->input->cur;
input->free = NULL;
/* lets parse the entity knowing it's an external subset */
xmlParseExternalSubset (dtdCtxt, ExternalID, SystemID);
if (dtdCtxt->myDoc != NULL) {
if (dtdCtxt->wellFormed) {
ret = dtdCtxt->myDoc->intSubset;
dtdCtxt->myDoc->intSubset = NULL;
} else {
ret = NULL;
}
xmlFreeDoc (dtdCtxt->myDoc);
dtdCtxt->myDoc = NULL;
}
xmlFreeParserCtxt (dtdCtxt);
ctxt->myDoc->extSubset = ret;
}
}
static xmlParserInputPtr
gdb3html_resolveEntity (Context *context, const xmlChar *publicId, const xmlChar *systemId)
{
xmlParserInputPtr ret;
ret = resolveEntity (context->ParserCtxt, publicId, systemId);
return ret;
}
static void
gdb3html_entityDecl (Context *context, const xmlChar *name, int type,
const xmlChar *publicId, const xmlChar *systemId, xmlChar *content)
{
entityDecl (context->ParserCtxt, name, type, publicId, systemId, content);
}
static void
gdb3html_attributeDecl (Context *context, const xmlChar *elem, const xmlChar *name,
int type, int def, const xmlChar *defaultValue,
xmlEnumerationPtr tree)
{
attributeDecl(context->ParserCtxt, elem, name, type, def, defaultValue, tree);
}
static void
gdb3html_elementDecl (Context *context, const xmlChar *name, int type,
xmlElementContentPtr content)
{
elementDecl(context->ParserCtxt, name, type, content);
}
static void
gdb3html_notationDecl (Context *context, const xmlChar *name,
const xmlChar *publicId, const xmlChar *systemId)
{
notationDecl(context->ParserCtxt, name, publicId, systemId);
}
static void
gdb3html_unparsedEntityDecl (Context *context, const xmlChar *name,
const xmlChar *publicId, const xmlChar *systemId,
const xmlChar *notationName)
{
unparsedEntityDecl (context->ParserCtxt, name, publicId, systemId, notationName);
}
static void
gdb3html_reference (Context *context, const xmlChar *name)
{
reference (context->ParserCtxt, name);
}
static void
gdb3html_processingInstruction (Context *context, const xmlChar *target,
const xmlChar *data)
{
processingInstruction (context->ParserCtxt, target, data);
}
static xmlEntityPtr
gdb3html_getParameterEntity (Context *context, const xmlChar *name)
{
xmlEntityPtr ret;
ret = getParameterEntity (context->ParserCtxt, name);
return ret;
}
static xmlSAXHandler parser = {
(internalSubsetSAXFunc) gdb3html_internalSubset, /* internalSubset */
(isStandaloneSAXFunc) gdb3html_isStandalone, /* isStandalone */
(hasInternalSubsetSAXFunc) gdb3html_hasInternalSubset, /* hasInternalSubset */
(hasExternalSubsetSAXFunc) gdb3html_hasExternalSubset, /* hasExternalSubset */
(resolveEntitySAXFunc) gdb3html_resolveEntity, /* resolveEntity */
(getEntitySAXFunc) get_entity, /* getEntity */
(entityDeclSAXFunc) gdb3html_entityDecl, /* entityDecl */
(notationDeclSAXFunc) gdb3html_notationDecl, /* notationDecl */
(attributeDeclSAXFunc) gdb3html_attributeDecl, /* attributeDecl */
(elementDeclSAXFunc) gdb3html_elementDecl, /* elementDecl */
(unparsedEntityDeclSAXFunc) gdb3html_unparsedEntityDecl, /* unparsedEntityDecl */
NULL, /* setDocumentLocator */
(startDocumentSAXFunc) start_document, /* startDocument */
(endDocumentSAXFunc) end_document, /* endDocument */
(startElementSAXFunc) start_element, /* startElement */
(endElementSAXFunc) end_element, /* endElement */
(referenceSAXFunc) gdb3html_reference, /* reference */
(charactersSAXFunc) gdb3html_characters, /* characters */
NULL, /* ignorableWhitespace */
(processingInstructionSAXFunc) gdb3html_processingInstruction, /* processingInstruction */
(commentSAXFunc) gdb3html_comment, /* comment */
(warningSAXFunc) gdb3html_warning, /* warning */
(errorSAXFunc) gdb3html_error, /* error */
(fatalErrorSAXFunc) fatal_error, /* fatalError */
(getParameterEntitySAXFunc) gdb3html_getParameterEntity, /*parameterEntity */
(cdataBlockSAXFunc) cdata_block
};
static xmlDocPtr
xml_parse_document (gchar *filename)
{
/* This function is ripped from parser.c in libxml but slightly
* modified so as not to spew debug warnings all around */
xmlDocPtr ret;
xmlParserCtxtPtr ctxt;
char *directory;
directory = NULL;
ctxt = xmlCreateFileParserCtxt(filename);
if (ctxt == NULL) {
return (NULL);
}
ctxt->sax = NULL; /* This line specifically stops the warnings */
if ((ctxt->directory == NULL) && (directory == NULL))
directory = xmlParserGetDirectory (filename);
if ((ctxt->directory == NULL) && (directory != NULL))
ctxt->directory = (char *) xmlStrdup ((xmlChar *) directory);
xmlParseDocument (ctxt);
if (ctxt->wellFormed) {
ret = ctxt->myDoc;
} else {
ret = NULL;
xmlFreeDoc (ctxt->myDoc);
ctxt->myDoc = NULL;
}
xmlFreeParserCtxt (ctxt);
return (ret);
}
static void
print_footer (const char *prev, const char *home, const char *next)
{
g_print ("\n<HR ALIGN=\"LEFT\" WIDTH=\"100%%\">\n");
g_print ("<TABLE WIDTH=\"100%%\" BORDER=\"0\" CELLPADDING=\"0\" CELLSPACING=\"0\">\n");
g_print ("<TR>\n<TD WIDTH=\"33%%\" ALIGN=\"LEFT\" VALIGN=\"TOP\">");
if (prev == NULL) {
g_print (" ");
} else {
g_print ("<A HREF=\"%s\"><<< Previous</A>", prev);
}
g_print ("</TD>\n<TD WIDTH=\"34%%\" ALIGN=\"CENTER\" VALIGN=\"TOP\">");
if (home == NULL) {
g_print (" ");
} else {
g_print ("<A HREF=\"%s\">Home</A>", home);
}
g_print ("</TD>\n<TD WIDTH=\"33%%\" ALIGN=\"RIGHT\" VALIGN=\"TOP\">");
if (next == NULL) {
g_print (" ");
} else {
g_print ("<A HREF=\"%s\">Next >>></A>", next);
}
g_print ("</TD>\n</TR></TABLE>\n");
g_print ("</BODY>\n</HTML>\n");
}
static void
sect_footer (Context *context, const char *section)
{
GList *temp_list;
GList *next_node;
GList *prev_node;
char *next_uri;
char *prev_uri;
char *home_uri;
if (context->sect1id_stack == NULL) {
return;
}
temp_list = context->sect1id_stack;
while (temp_list != NULL) {
if (g_strcasecmp ((char *)temp_list->data, section) == 0) {
/* Yes the below is correct because we are using a 'stack' */
next_node = g_list_previous (temp_list);
prev_node = g_list_next (temp_list);
if (next_node == NULL) {
next_uri = NULL;
} else {
next_uri = g_strdup_printf ("help:%s?%s", context->base_file, (char *) next_node->data);
}
if (prev_node == NULL) {
/* link back to the TOC */
prev_uri = g_strdup_printf ("help:%s", context->base_file);
} else {
prev_uri = g_strdup_printf ("help:%s?%s", context->base_file, (char *)prev_node->data);
}
home_uri = g_strdup_printf ("help:%s", context->base_file);
print_footer (prev_uri, home_uri, next_uri);
g_free (home_uri);
g_free (prev_uri);
g_free (next_uri);
break;
}
temp_list = g_list_next (temp_list);
}
}
static void
parse_file (gchar *filename, gchar *section)
{
GList *temp_list;
Context *context = g_new0 (Context, 1);
context->ParserCtxt = xmlNewParserCtxt ();
xmlInitParserCtxt (context->ParserCtxt);
context->ParserCtxt->sax = &parser;
context->ParserCtxt->validate = 1;
/* FIXME bugzilla.eazel.com 2399:
* Is the below correct? version needs to be set so as not to
* segfault in startDocument (in SAX.h) */
context->ParserCtxt->version = xmlStrdup ("1.0");
context->ParserCtxt->myDoc = xml_parse_document (filename);
xmlSubstituteEntitiesDefault (1);
if (section) {
context->target_section = g_strdup (section);
context->elements = sect_preparse;
context->data = sect_init_data ();
context->base_file = g_strdup (filename);
if (xmlSAXUserParseFile (&parser, context, context->base_file) < 0) {
g_error ("error");
};
context->elements = sect_elements;
if (xmlSAXUserParseFile (&parser, context, context->base_file) < 0) {
g_error ("error");
};
sect_footer (context, section);
} else {
context->elements = toc_elements;
context->data = toc_init_data ();
context->base_file = g_strdup (filename);
if (xmlSAXUserParseFile (&parser, context, context->base_file) < 0) {
g_error ("error");
};
temp_list = g_list_last (context->sect1id_stack);
if (temp_list != NULL) {
char *temp_uri;
temp_uri = g_strdup_printf ("help:%s?%s", context->base_file, (char *)temp_list->data);
print_footer (NULL, NULL, temp_uri);
g_free (temp_uri);
}
}
}
int
main (int argc, char *argv[])
{
gchar *section = NULL;
gchar *ptr;
gchar *ptr2;
if (argc != 2) {
/* It is '?SECTIONID' not '#SECTIONID' */
g_print ("Usage: gnome-db2html2 FILE[?SECTIONID]\n\n");
return 0;
}
if (!strncmp (argv[1], "file://", strlen ("file://"))) {
ptr = argv[1] + strlen ("file://");
} else
ptr = argv[1];
for (ptr2 = ptr; *ptr2; ptr2++){
if (*ptr2 == '?') {
*ptr2 = '\000';
if (*(ptr2 + 1))
section = ptr2 + 1;
break;
}
}
parse_file (ptr, section);
return 0;
}
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