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;
}
CSSStyle *CSSSheetLookupElement(CSSSheet *sheet, const char *elementName, const char *className, int add, int latent)
{
char *selector = CSSMakeSelector(elementName,className);
CSSStyle *result = CSSSheetLookupSelector(sheet,selector,add,latent);
free(selector);
return result;
}
CSSStyle *CSSSheetGetStyleParent(CSSSheet *sheet, CSSStyle *style)
{
char *parentSelector = CSSStyleCopyParent(style);
if (parentSelector == NULL)
return NULL;;
CSSStyle *parent = CSSSheetLookupSelector(sheet,parentSelector,0,0);
free(parentSelector);
return parent;
}
CSSSheet *WordParseStyles(WordConverter *converter)
{
CSSSheet *styleSheet = CSSSheetNew();
CSSStyle *bodyStyle = CSSSheetLookupElement(styleSheet,"body",NULL,1,0);
CSSPut(CSSStyleRule(bodyStyle),"counter-reset","h1 h2 h3 h4 h5 h6 figure table");
parseBody(converter,styleSheet);
if (converter->package->styles == NULL)
return styleSheet;;
DFNode *root = converter->package->styles->root;
if (root == NULL)
return styleSheet;
if (root->tag != WORD_STYLES)
return styleSheet;;
WordSheet *sheet = converter->styles;
const char **allIdents = WordSheetCopyIdents(sheet);
for (int i = 0; allIdents[i]; i++) {
WordStyle *wordStyle = WordSheetStyleForIdent(sheet,allIdents[i]);
if ((wordStyle->selector == NULL) || WordStyleIsProtected(wordStyle))
continue;
CSSStyle *style = CSSSheetLookupSelector(styleSheet,wordStyle->selector,1,0);
styleParse(wordStyle,converter,style);
const char *defaultVal = DFGetAttribute(wordStyle->element,WORD_DEFAULT);
if ((defaultVal != NULL) && Word_parseOnOff(defaultVal)) {
StyleFamily family = WordStyleFamilyForSelector(style->selector);
CSSSheetSetDefaultStyle(styleSheet,style,family);
CSSSetDefault(CSSStyleRule(style),1);
if (family == StyleFamilyParagraph)
fixParagraphSpacing(style,wordStyle->element);
}
}
free(allIdents);
DFNode *docDefaults = DFChildWithTag(root,WORD_DOCDEFAULTS);
DFNode *pPrDefault = DFChildWithTag(docDefaults,WORD_PPRDEFAULT);
DFNode *pPr = DFChildWithTag(pPrDefault,WORD_PPR);
if (pPr != NULL) {
CSSStyle *body = CSSSheetLookupElement(styleSheet,"body",NULL,1,0);
const char *styleId = NULL;
WordGetPPr(pPr,CSSStyleRule(body),&styleId,converter->mainSection);
}
// Special case for figure style: set left and right margin to auto, if not already set
CSSStyle *figure = CSSSheetLookupElement(styleSheet,"figure",NULL,0,0);
if (figure != NULL) {
if (CSSGet(CSSStyleRule(figure),"margin-left") == NULL)
CSSPut(CSSStyleRule(figure),"margin-left","auto");
if (CSSGet(CSSStyleRule(figure),"margin-right") == NULL)
CSSPut(CSSStyleRule(figure),"margin-right","auto");
}
return styleSheet;
}
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 DFHashTable *getStylesByHeadingLevel(CSSSheet *sheet)
{
DFHashTable *stylesByHeadingLevel = DFHashTableNew(NULL,NULL);
const char **allSelectors = CSSSheetCopySelectors(sheet);
for (int i = 0; allSelectors[i]; i++) {
CSSStyle *style = CSSSheetLookupSelector(sheet,allSelectors[i],0,0);
if (style->headingLevel > 0) {
int headingLevel = style->headingLevel;
StyleList *item = (StyleList *)xcalloc(1,sizeof(StyleList));
item->style = CSSStyleRetain(style);
item->next = DFHashTableLookupInt(stylesByHeadingLevel,headingLevel);
DFHashTableAddInt(stylesByHeadingLevel,headingLevel,item);
}
}
free(allSelectors);
return stylesByHeadingLevel;
}
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);
}
DFHashTable *CSSSheetRules(CSSSheet *sheet)
{
DFHashTable *result = DFHashTableNew((DFCopyFunction)DFHashTableRetain,(DFFreeFunction)DFHashTableRelease);
const char **allSelectors = CSSSheetCopySelectors(sheet);
for (int selIndex = 0; allSelectors[selIndex]; selIndex++) {
const char *selector = allSelectors[selIndex];
CSSStyle *origStyle = CSSSheetLookupSelector(sheet,selector,0,0);
if ((origStyle == NULL) || origStyle->latent)
continue;
char *elementName = CSSSelectorCopyElementName(selector);
char *className = CSSSelectorCopyClassName(selector);
char *baseSelector;
if (className != NULL) {
char *escapedClassName = CSSEscapeIdent(className);
baseSelector = DFFormatString("%s.%s",elementName,escapedClassName);
free(escapedClassName);
}
else {
baseSelector = xstrdup(elementName);
}
CSSStyle *flattenedStyle = CSSSheetFlattenedStyle(sheet,origStyle);
const char **allSuffixes = CSSStyleCopySuffixes(flattenedStyle);
for (int suffixIndex = 0; allSuffixes[suffixIndex]; suffixIndex++) {
const char *suffix = allSuffixes[suffixIndex];
char *fullSelector = DFFormatString("%s%s",baseSelector,suffix);
CSSProperties *properties = CSSStyleRuleForSuffix(flattenedStyle,suffix);
DFHashTable *collapsed = CSSCollapseProperties(properties);
if (!((DFHashTableCount(collapsed) == 0) && ((strlen(suffix) > 0) || CSSIsBuiltinSelector(selector))))
DFHashTableAdd(result,fullSelector,collapsed);
free(fullSelector);
DFHashTableRelease(collapsed);
}
free(allSuffixes);
CSSStyleRelease(flattenedStyle);
free(elementName);
free(className);
free(baseSelector);
}
free(allSelectors);
return result;
}
CSSStyle *CSSSheetParentOfStyle(CSSSheet *sheet, CSSStyle *style)
{
// FIXME: Not covered by tests
if (style == NULL)
return NULL;;
CSSStyle *parent = CSSSheetGetStyleParent(sheet,style);
if (parent != NULL)
return parent;
if (CSSSelectorHasClassName(style->selector)) {
char *elementName = CSSSelectorCopyElementName(style->selector);
parent = CSSSheetLookupSelector(sheet,elementName,0,0);
free(elementName);
if (parent != NULL)
return parent;
}
return NULL;
}
int CSSSheetHeadingNumbering(CSSSheet *sheet)
{
const char **allSelectors = CSSSheetCopySelectors(sheet);
for (int i = 0; allSelectors[i]; i++) {
CSSStyle *style = CSSSheetLookupSelector(sheet,allSelectors[i],0,0);
if (style->headingLevel == 0)
continue;
if (CSSGet(CSSStyleBefore(style),"content") == NULL)
continue;
DFArray *contentParts = CSSParseContent(CSSGet(CSSStyleBefore(style),"content"));
for (size_t partIndex = 0; partIndex < DFArrayCount(contentParts); partIndex++) {
ContentPart *part = DFArrayItemAt(contentParts,partIndex);
if (part->type == ContentPartCounter) {
free(allSelectors);
DFArrayRelease(contentParts);
return 1;
}
}
DFArrayRelease(contentParts);
}
free(allSelectors);
return 0;
}
static void breakCycles(CSSSheet *sheet)
{
// FIXME: Not covered by tests
const char **allSelectors = CSSSheetCopySelectors(sheet);
for (int i = 0; allSelectors[i]; i++) {
const char *selector = allSelectors[i];
CSSStyle *style = CSSSheetLookupSelector(sheet,selector,0,0);
DFHashTable *visited = DFHashTableNew((DFCopyFunction)xstrdup,(DFFreeFunction)free);
int depth = 0;
while (style != NULL) {
if (DFHashTableLookup(visited,style->selector) != NULL) {
CSSStyleSetParent(style,NULL);
break;
}
DFHashTableAdd(visited,style->selector,"");
style = CSSSheetGetStyleParent(sheet,style);
depth++;
}
DFHashTableRelease(visited);
}
free(allSelectors);
}
static CellPadding getPadding(CSSSheet *styleSheet, WordStyle *wordStyle, CSSProperties *cellProperties)
{
const char *paddingLeftStr = NULL;
const char *paddingRightStr = NULL;
CSSStyle *style;
if ((wordStyle != NULL) && (wordStyle->selector != NULL)) {
style = CSSSheetLookupSelector(styleSheet,wordStyle->selector,0,0);
}
else {
style = CSSSheetDefaultStyleForFamily(styleSheet,StyleFamilyTable);
}
if (style != NULL) {
paddingLeftStr = CSSGet(CSSStyleCell(style),"padding-left");
paddingRightStr = CSSGet(CSSStyleCell(style),"padding-right");
}
if (CSSGet(cellProperties,"padding-left") != NULL)
paddingLeftStr = CSSGet(cellProperties,"padding-left");
if (CSSGet(cellProperties,"padding-right") != NULL)
paddingRightStr = CSSGet(cellProperties,"padding-right");;
CellPadding padding;
padding.leftPts = 0;
padding.rightPts = 0;
CSSLength paddingLeftLength = CSSLengthFromString(paddingLeftStr);
if (CSSLengthIsValid(paddingLeftLength) && (paddingLeftLength.units == UnitsPt))
padding.leftPts = paddingLeftLength.value;;
CSSLength paddingRightLength = CSSLengthFromString(paddingRightStr);
if (CSSLengthIsValid(paddingRightLength) && (paddingRightLength.units == UnitsPt))
padding.rightPts = paddingRightLength.value;;
return padding;
}
void WordUpdateStyles(WordConverter *converter, CSSSheet *styleSheet)
{
CSSStyle *paraDefault = CSSSheetDefaultStyleForFamily(styleSheet,StyleFamilyParagraph);
if (CSSGet(CSSStyleRule(paraDefault),"margin-top") == NULL)
CSSPut(CSSStyleRule(paraDefault),"margin-top","-word-auto");
if (CSSGet(CSSStyleRule(paraDefault),"margin-bottom") == NULL)
CSSPut(CSSStyleRule(paraDefault),"margin-bottom","-word-auto");
if (converter->package->styles == NULL) // FIXME: create this document
return;;
DFNode *root = converter->package->styles->root;
if ((root == NULL) || (root->tag != WORD_STYLES))
return;;
DFHashTable *remainingSelectors = DFHashTableNew(NULL,NULL); // Used as a set
const char **allSelectors = CSSSheetCopySelectors(styleSheet);
for (int i = 0; allSelectors[i]; i++) {
const char *selector = allSelectors[i];
DFHashTableAdd(remainingSelectors,selector,"");
}
free(allSelectors);
WordSheet *sheet = converter->styles;
DFHashTable *oldConcreteNumIds = WordSheetFindUsedConcreteNumIds(sheet);
updateNumbering(converter,styleSheet);
// Update or remove existing styles
const char **allIdents = WordSheetCopyIdents(sheet);
for (int i = 0; allIdents[i]; i++) {
WordStyle *wordStyle = WordSheetStyleForIdent(sheet,allIdents[i]);
DFNode *element = wordStyle->element;
if (WordStyleIsProtected(wordStyle)) {
DFHashTableRemove(remainingSelectors,wordStyle->selector);
continue;
}
if (!DFStringEquals(wordStyle->type,"paragraph") &&
!DFStringEquals(wordStyle->type,"character") &&
!DFStringEquals(wordStyle->type,"table"))
continue;
CSSStyle *cssStyle = CSSSheetLookupSelector(styleSheet,wordStyle->selector,0,0);
if (cssStyle == NULL) {
// Remove style
WordSheetRemoveStyle(sheet,wordStyle);
continue;
}
// Update style
WordPutStyle(element,cssStyle,converter);
updateDefault(cssStyle,element,styleSheet,converter);
DFHashTableRemove(remainingSelectors,wordStyle->selector);
}
free(allIdents);
// Sort the list of new styles, so that test output is deterministic
const char **sortedSelectors = DFHashTableCopyKeys(remainingSelectors);
DFSortStringsCaseInsensitive(sortedSelectors);
// Add new styles. We do this in two stages - first creating the styles, and then setting their properties.
// This is because the second stage depends on referenced styles (e.g. based on and next) to be already
// present.
for (int selIndex = 0; sortedSelectors[selIndex]; selIndex++) {
const char *selector = sortedSelectors[selIndex];
CSSStyle *style = CSSSheetLookupSelector(styleSheet,selector,0,0);
const char *familyStr = NULL;
StyleFamily family = WordStyleFamilyForSelector(selector);
if (family == StyleFamilyParagraph)
familyStr = "paragraph";
else if (family == StyleFamilyCharacter)
familyStr = "character";
else if (family == StyleFamilyTable)
familyStr = "table";
else
continue;
char *styleId = WordStyleIdForStyle(style);
char *name = WordStyleNameForStyle(style);
if (name == NULL)
name = xstrdup(styleId);;
WordStyle *wordStyle = WordSheetAddStyle(sheet,familyStr,styleId,name,selector);
DFCreateChildElement(wordStyle->element,WORD_QFORMAT);
free(styleId);
free(name);
}
for (int selIndex = 0; sortedSelectors[selIndex]; selIndex++) {
const char *selector = sortedSelectors[selIndex];
StyleFamily family = WordStyleFamilyForSelector(selector);
if ((family != StyleFamilyParagraph) &&
(family != StyleFamilyCharacter) &&
(family != StyleFamilyTable))
continue;
CSSStyle *style = CSSSheetLookupSelector(styleSheet,selector,0,0);
WordStyle *wordStyle = WordSheetStyleForSelector(converter->styles,selector);
assert(wordStyle != NULL);
CSSStyleAddDefaultHTMLProperties(style);
// FIXME: language
// FIXME: not covered by tests
if ((style->headingLevel >= 1) && (style->headingLevel <= 6))
CSSStyleSetNext(style,"p.Normal");
WordPutStyle(wordStyle->element,style,converter);
updateDefault(style,wordStyle->element,styleSheet,converter);
}
free(sortedSelectors);
// Update body style (document defaults)
updateDefaults(converter,styleSheet);
updateBody(converter,styleSheet);
DFHashTable *newConcreteNumIds = WordSheetFindUsedConcreteNumIds(sheet);
const char **oldKeys = DFHashTableCopyKeys(oldConcreteNumIds);
for (int oldIndex = 0; oldKeys[oldIndex]; oldIndex++) {
const char *numId = oldKeys[oldIndex];
if (DFHashTableLookup(newConcreteNumIds,numId) == NULL) {
WordConcreteNum *concreteNum = WordNumberingConcreteWithId(converter->numbering,numId);
if (concreteNum != NULL)
WordNumberingRemoveConcrete(converter->numbering,concreteNum);
}
}
free(oldKeys);
DFHashTableRelease(remainingSelectors);
DFHashTableRelease(oldConcreteNumIds);
DFHashTableRelease(newConcreteNumIds);
}
// FIXME: This won't work now for Word documents, where styles always have class names
// FIXME: Not covered by tests
void CSSSheetSetHeadingNumbering(CSSSheet *sheet, int enabled)
{
CSSStyle *defaultStyle = CSSSheetDefaultStyleForFamily(sheet,StyleFamilyParagraph);
if (enabled) {
DFHashTable *stylesByHeadingLevel = getStylesByHeadingLevel(sheet);
for (int level = 1; level <= 6; level++) {
StyleList *styles = DFHashTableLookupInt(stylesByHeadingLevel,level);
int haveClassless = 0;
for (StyleList *item = styles; item != NULL; item = item->next) {
if (item->style->className == NULL)
haveClassless = 1;
}
// If there exists a style at level n which has no class name, then that is the parent of all other
// heading styles. Set the numbering on that. Alternatively, if there no styles exist at level n, then
// create a new one with no class name, and set the numbering information on that.
if ((styles == NULL) || haveClassless) {
char *elementName = DFFormatString("h%d",level);
CSSStyle *style = CSSSheetLookupElement(sheet,elementName,NULL,1,0);
enableNumberingForStyle(style);
free(elementName);
}
else {
// There are multiple heading styles at level n, all of which have a class name associated with them.
// Set the numbering information on those which either have no parentId, or whose parentId is the
// default paragraph style. This caters for situations like the "HeadingXUnnumbered" styles we used
// to have, which were based on the corresponding "HeadingX" style.
for (StyleList *item = styles; item != NULL; item = item->next) {
char *parentSelector = CSSStyleCopyParent(item->style);
if ((parentSelector == NULL) || !strcmp(parentSelector,defaultStyle->selector)) {
enableNumberingForStyle(item->style);
}
else {
disableNumberingForStyle(item->style,1);
}
free(parentSelector);
}
}
StyleList *next;
for (; styles != NULL; styles = next) {
next = styles->next;
CSSStyleRelease(styles->style);
free(styles);
}
}
DFHashTableRelease(stylesByHeadingLevel);
}
else {
// Clear all numbering information on all heading styles
const char **allSelectors = CSSSheetCopySelectors(sheet);
for (int i = 0; allSelectors[i]; i++) {
CSSStyle *style = CSSSheetLookupSelector(sheet,allSelectors[i],0,0);
if (style->headingLevel > 0) {
CSSPut(CSSStyleRule(style),"counter-increment",NULL);
CSSPut(CSSStyleRule(style),"counter-reset",NULL);
CSSPut(CSSStyleBefore(style),"content",NULL);
}
}
free(allSelectors);
}
}
