CSSStyle *CSSSheetFlattenedStyle(CSSSheet *sheet, CSSStyle *orig)
{
// FIXME: Need tests for parent cycles
CSSStyle *ancestor = orig;
CSSStyle *result = CSSStyleNew("temp");
DFHashTable *visited = DFHashTableNew((DFCopyFunction)xstrdup,(DFFreeFunction)free);
const char **allSuffixes = NULL;
while (1) {
free(allSuffixes);
allSuffixes = CSSStyleCopySuffixes(ancestor);
for (int suffixIndex = 0; allSuffixes[suffixIndex]; suffixIndex++) {
const char *suffix = allSuffixes[suffixIndex];
CSSProperties *origProperties = CSSStyleRuleForSuffix(ancestor,suffix);
CSSProperties *collapsedProperties = CSSStyleRuleForSuffix(result,suffix);
const char **allNames = CSSPropertiesCopyNames(origProperties);
for (int nameIndex = 0; allNames[nameIndex]; nameIndex++) {
const char *name = allNames[nameIndex];
if (!strcmp(name,"-uxwrite-default") && (ancestor != orig))
continue;
if (CSSGet(collapsedProperties,name) == NULL)
CSSPut(collapsedProperties,name,CSSGet(origProperties,name));
}
free(allNames);
}
DFHashTableAdd(visited,ancestor->selector,"");
ancestor = CSSSheetGetStyleParent(sheet,ancestor);
if ((ancestor == NULL) || (DFHashTableLookup(visited,ancestor->selector) != NULL))
break;
}
free(allSuffixes);
DFHashTableRelease(visited);
return result;
}
char *CSSSheetCopyText(CSSSheet *sheet)
{
DFBuffer *result = DFBufferNew();
const char **allSelectors = CSSSheetCopySelectors(sheet);
DFSortStringsCaseInsensitive(allSelectors);
for (int selIndex = 0; allSelectors[selIndex]; selIndex++) {
CSSStyle *style = CSSSheetLookupSelector(sheet,allSelectors[selIndex],0,0);
DFBufferFormat(result,"%s\n",style->selector);
const char **sortedSuffixes = CSSStyleCopySuffixes(style);
DFSortStringsCaseInsensitive(sortedSuffixes);
for (int suffixIndex = 0; sortedSuffixes[suffixIndex]; suffixIndex++) {
const char *suffix = sortedSuffixes[suffixIndex];
char *quotedSuffix = DFQuote(suffix);
DFBufferFormat(result," %s\n",quotedSuffix);
free(quotedSuffix);
CSSProperties *properties = CSSStyleRuleForSuffix(style,suffix);
const char **sortedNames = CSSPropertiesCopyNames(properties);
DFSortStringsCaseInsensitive(sortedNames);
for (int nameIndex = 0; sortedNames[nameIndex]; nameIndex++) {
const char *name = sortedNames[nameIndex];
const char *value = CSSGet(properties,name);
DFBufferFormat(result," %s = %s\n",name,value);
}
free(sortedNames);
}
free(sortedSuffixes);
}
free(allSelectors);
char *str = xstrdup(result->data);
DFBufferRelease(result);
return str;
}
void CSSPropertiesPrint(CSSProperties *properties, const char *indent)
{
const char **allNames = CSSPropertiesCopyNames(properties);
DFSortStringsCaseInsensitive(allNames);
for (int nameIndex = 0; allNames[nameIndex]; nameIndex++) {
const char *name = allNames[nameIndex];
const char *value = CSSGet(properties,name);
printf("%s%s = %s\n",indent,name,value);
}
free(allNames);
}
static void updateFromRawCSSRules(CSSSheet *sheet, DFHashTable *rules)
{
// FIXME: Handle class names containing escape sequences
DFHashTableRelease(sheet->_styles);
sheet->_styles = DFHashTableNew((DFCopyFunction)CSSStyleRetain,(DFFreeFunction)CSSStyleRelease);
const char **sortedSelectors = DFHashTableCopyKeys(rules);
DFSortStringsCaseInsensitive(sortedSelectors);
for (int selIndex = 0; sortedSelectors[selIndex]; selIndex++) {
const char *constSelector = sortedSelectors[selIndex];
// Treat any selectors specifying the class name only as paragraph styles
char *selector;
if (!strncmp(constSelector,".",1))
selector = DFFormatString("p%s",constSelector); // FIXME: Not covered by tests
else
selector = xstrdup(constSelector);
DFHashTable *raw = DFHashTableLookup(rules,constSelector);
char *baseId = NULL;
char *suffix = NULL;
CSSParseSelector(selector,&baseId,&suffix);
CSSStyle *style = CSSSheetLookupSelector(sheet,baseId,0,0);
if (style == NULL) {
style = CSSStyleNew(baseId);
CSSSheetAddStyle(sheet,style);
CSSStyleRelease(style);
}
CSSProperties *properties = CSSStyleRuleForSuffix(style,suffix);
CSSProperties *expanded = CSSPropertiesNewWithRaw(raw);
const char **allNames = CSSPropertiesCopyNames(expanded);
for (int nameIndex = 0; allNames[nameIndex]; nameIndex++) {
const char *name = allNames[nameIndex];
CSSPut(properties,name,CSSGet(expanded,name));
}
free(allNames);
if (!strcmp(suffix,"")) {
const char *defaultVal = CSSGet(properties,"-uxwrite-default");
if ((defaultVal != NULL) && DFStringEqualsCI(defaultVal,"true"))
CSSSheetSetDefaultStyle(sheet,style,StyleFamilyFromHTMLTag(style->tag));
}
CSSPropertiesRelease(expanded);
free(baseId);
free(suffix);
free(selector);
}
free(sortedSelectors);
removeRedundantProperties(sheet);
}
static void removeRedundantProperties(CSSSheet *sheet)
{
// Remove any properties set on a style that have the same value as the corresponding property
// on the parent style. This is necessary because CSS doesn't support style inheritance (in
// the sense of Word & ODF's styles), so when we save out a HTML file, every style has all
// properties of its ancestors. After reading in a HTML file for the purposes of updating the
// original Word or ODF style, we don't want these extra property settings to remain, so that
// we can avoid adding spurious extra redundant property settings to the original file.
breakCycles(sheet);
const char **sortedSelectors = reverseTopologicalSortedSelectors(sheet);
for (size_t selIndex = 0; sortedSelectors[selIndex]; selIndex++) {
const char *selector = sortedSelectors[selIndex];
CSSStyle *child = CSSSheetLookupSelector(sheet,selector,0,0);
CSSStyle *parent = CSSSheetGetStyleParent(sheet,child);
if (parent == NULL)
continue;
const char **allSuffixes = CSSStyleCopySuffixes(child);
for (int suffixIndex = 0; allSuffixes[suffixIndex]; suffixIndex++) {
const char *suffix = allSuffixes[suffixIndex];
int isCell = !strcmp(suffix," > * > tr > td");
CSSProperties *childProperties = CSSStyleRuleForSuffix(child,suffix);
CSSProperties *parentProperties = CSSStyleRuleForSuffix(parent,suffix);
const char **allNames = CSSPropertiesCopyNames(childProperties);
for (int nameIndex = 0; allNames[nameIndex]; nameIndex++) {
const char *name = allNames[nameIndex];
// In docx's styles.xml, the tblCellMar values in table styles are not inherited
// (this seems like a bug in word, as isn't inconsistent with all other properties)
// So keep these ones.
if (isCell && DFStringHasPrefix(name,"padding-"))
continue;
const char *childVal = CSSGet(childProperties,name);
const char *parentVal = CSSGet(parentProperties,name);
if ((childVal != NULL) && (parentVal != NULL) && DFStringEquals(childVal,parentVal))
CSSPut(childProperties,name,NULL);
}
free(allNames);
}
free(allSuffixes);
}
free(sortedSelectors);
}
