Adding upstream version 2.9.0dev.12.upstream/2.9.0dev.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 378 insertions, 0 deletions

diff --git a/WWW/Library/Implementation/HTStyle.c b/WWW/Library/Implementation/HTStyle.c
new file mode 100644
index 0000000..54c0bc5
--- /dev/null
+++ b/WWW/Library/Implementation/HTStyle.c
@@ -0,0 +1,378 @@
+/*
+ * $LynxId: HTStyle.c,v 1.16 2009/11/27 13:01:48 tom Exp $
+ *
+ *	Style Implementation for Hypertext			HTStyle.c
+ *	==================================
+ *
+ *	Styles allow the translation between a logical property
+ *	of a piece of text and its physical representation.
+ *
+ *	A StyleSheet is a collection of styles, defining the
+ *	translation necessary to
+ *	represent a document.  It is a linked list of styles.
+ */
+
+#include <HTUtils.h>
+#include <HTStyle.h>
+
+#include <LYLeaks.h>
+
+/*	Create a new style
+*/
+HTStyle *HTStyleNew(void)
+{
+    HTStyle *self = typecalloc(HTStyle);
+
+    if (self == NULL)
+	outofmem(__FILE__, "HTStyleNew");
+    return self;
+}
+
+/*	Create a new style with a name
+*/
+HTStyle *HTStyleNewNamed(const char *name)
+{
+    HTStyle *self = HTStyleNew();
+
+    StrAllocCopy(self->w_name, name);
+    self->id = -1;		/* <0 */
+    return self;
+}
+
+/*	Free a style
+*/
+HTStyle *HTStyleFree(HTStyle *self)
+{
+    FREE(self->w_name);
+    FREE(self->w_SGMLTag);
+    FREE(self);
+    return NULL;
+}
+
+#ifdef SUPPRESS			/* Only on the NeXT */
+/*	Read a style from a stream	(without its name)
+ *	--------------------------
+ *
+ *	Reads a style with paragraph information from a stream.
+ *	The style name is not read or written by these routines.
+ */
+#define NONE_STRING "(None)"
+#define HTStream NXStream
+
+HTStyle *HTStyleRead(HTStyle *style, HTStream *stream)
+{
+    char myTag[STYLE_NAME_LENGTH];
+    char fontName[STYLE_NAME_LENGTH];
+    NXTextStyle *p;
+    int tab;
+    int gotpara;		/* flag: have we got a paragraph definition? */
+
+    NXScanf(stream, "%s%s%f%d",
+	    myTag,
+	    fontName,
+	    &style->fontSize,
+	    &gotpara);
+    if (gotpara) {
+	if (!style->paragraph) {
+	    style->paragraph = malloc(sizeof(*(style->paragraph)));
+	    if (!style->paragraph)
+		outofmem(__FILE__, "HTStyleRead");
+	    style->paragraph->tabs = 0;
+	}
+	p = style->paragraph;
+	NXScanf(stream, "%f%f%f%f%hd%f%f%hd",
+		&p->indent1st,
+		&p->indent2nd,
+		&p->lineHt,
+		&p->descentLine,
+		&p->alignment,
+		&style->spaceBefore,
+		&style->spaceAfter,
+		&p->numTabs);
+	FREE(p->tabs);
+	p->tabs = malloc(p->numTabs * sizeof(p->tabs[0]));
+	if (!p->tabs)
+	    outofmem(__FILE__, "HTStyleRead");
+	for (tab = 0; tab < p->numTabs; tab++) {
+	    NXScanf(stream, "%hd%f",
+		    &p->tabs[tab].kind,
+		    &p->tabs[tab].x);
+	}
+    } else {			/* No paragraph */
+	FREE(style->paragraph);
+    }				/* if no paragraph */
+    StrAllocCopy(style->SGMLTag, myTag);
+    if (strcmp(fontName, NONE_STRING) == 0)
+	style->font = 0;
+    else
+      style->font =[Font newFont: fontName size:style->fontSize];
+    return NULL;
+}
+
+/*	Write a style to a stream in a compatible way
+*/
+HTStyle *HTStyleWrite(HTStyle *style, NXStream * stream)
+{
+    int tab;
+    NXTextStyle *p = style->paragraph;
+
+    NXPrintf(stream, "%s %s %f %d\n",
+	     style->SGMLTag,
+	     style->font ?[style->font name] : NONE_STRING,
+	     style->fontSize,
+	     p != 0);
+
+    if (p) {
+	NXPrintf(stream, "\t%f %f %f %f %d %f %f\t%d\n",
+		 p->indent1st,
+		 p->indent2nd,
+		 p->lineHt,
+		 p->descentLine,
+		 p->alignment,
+		 style->spaceBefore,
+		 style->spaceAfter,
+		 p->numTabs);
+
+	for (tab = 0; tab < p->numTabs; tab++)
+	    NXPrintf(stream, "\t%d %f\n",
+		     p->tabs[tab].kind,
+		     p->tabs[tab].x);
+    }
+    return style;
+}
+
+/*	Write a style to stdout for diagnostics
+*/
+HTStyle *HTStyleDump(HTStyle *style)
+{
+    int tab;
+    NXTextStyle *p = style->paragraph;
+
+    printf(STYLE_DUMP_FONT,
+	   style,
+	   style->name,
+	   style->SGMLTag,
+	   [style->font name],
+	   style->fontSize);
+    if (p) {
+	printf(STYLE_DUMP_IDENT,
+	       p->indent1st,
+	       p->indent2nd,
+	       p->lineHt,
+	       p->descentLine);
+	printf(STYLE_DUMP_ALIGN,
+	       p->alignment,
+	       p->numTabs,
+	       style->spaceBefore,
+	       style->spaceAfter);
+
+	for (tab = 0; tab < p->numTabs; tab++) {
+	    printf(STYLE_DUMP_TAB,
+		   p->tabs[tab].kind,
+		   p->tabs[tab].x);
+	}
+	printf("\n");
+    }				/* if paragraph */
+    return style;
+}
+#endif /* SUPPRESS */
+
+/*			StyleSheet Functions
+ *			====================
+ */
+
+/*	Searching for styles:
+*/
+HTStyle *HTStyleNamed(HTStyleSheet *self, const char *name)
+{
+    HTStyle *scan;
+
+    for (scan = self->styles; scan; scan = scan->next)
+	if (0 == strcmp(GetHTStyleName(scan), name))
+	    return scan;
+    CTRACE((tfp, "StyleSheet: No style named `%s'\n", name));
+    return NULL;
+}
+
+#ifdef NEXT_SUPRESS		/* Not in general common code */
+
+HTStyle *HTStyleMatching(HTStyleSheet *self, HTStyle *style)
+{
+    HTStyle *scan;
+
+    for (scan = self->styles; scan; scan = scan->next)
+	if (scan->paragraph == para)
+	    return scan;
+    return NULL;
+}
+
+/*	Find the style which best fits a given run
+ *	------------------------------------------
+ *
+ *	This heuristic is used for guessing the style for a run of
+ *	text which has been pasted in.  In order, we try:
+ *
+ *	A style whose paragraph structure is actually used by the run.
+ *	A style matching in font
+ *	A style matching in paragraph style exactly
+ *	A style matching in paragraph to a degree
+ */
+
+HTStyle *HTStyleForRun(HTStyleSheet *self, NXRun * run)
+{
+    HTStyle *scan;
+    HTStyle *best = 0;
+    int bestMatch = 0;
+    NXTextStyle *rp = run->paraStyle;
+
+    for (scan = self->styles; scan; scan = scan->next)
+	if (scan->paragraph == run->paraStyle)
+	    return scan;	/* Exact */
+
+    for (scan = self->styles; scan; scan = scan->next) {
+	NXTextStyle *sp = scan->paragraph;
+
+	if (sp) {
+	    int match = 0;
+
+	    if (sp->indent1st == rp->indent1st)
+		match = match + 1;
+	    if (sp->indent2nd == rp->indent2nd)
+		match = match + 2;
+	    if (sp->lineHt == rp->lineHt)
+		match = match + 1;
+	    if (sp->numTabs == rp->numTabs)
+		match = match + 1;
+	    if (sp->alignment == rp->alignment)
+		match = match + 3;
+	    if (scan->font == run->font)
+		match = match + 10;
+	    if (match > bestMatch) {
+		best = scan;
+		bestMatch = match;
+	    }
+	}
+    }
+    CTRACE((tfp, "HTStyleForRun: Best match for style is %d out of 18\n",
+	    bestMatch));
+    return best;
+}
+#endif /* NEXT_SUPRESS */
+
+/*	Add a style to a sheet
+ *	----------------------
+ */
+HTStyleSheet *HTStyleSheetAddStyle(HTStyleSheet *self, HTStyle *style)
+{
+    style->next = 0;		/* The style will go on the end */
+    if (!self->styles) {
+	self->styles = style;
+    } else {
+	HTStyle *scan;
+
+	for (scan = self->styles; scan->next; scan = scan->next) ;	/* Find end */
+	scan->next = style;
+    }
+    return self;
+}
+
+/*	Remove the given object from a style sheet if it exists
+*/
+HTStyleSheet *HTStyleSheetRemoveStyle(HTStyleSheet *self, HTStyle *style)
+{
+    if (self->styles == style) {
+	self->styles = style->next;
+	return self;
+    } else {
+	HTStyle *scan;
+
+	for (scan = self->styles; scan; scan = scan->next) {
+	    if (scan->next == style) {
+		scan->next = style->next;
+		return self;
+	    }
+	}
+    }
+    return NULL;
+}
+
+/*	Create new style sheet
+*/
+
+HTStyleSheet *HTStyleSheetNew(void)
+{
+    HTStyleSheet *self = typecalloc(HTStyleSheet);
+
+    if (self == NULL)
+	outofmem(__FILE__, "HTStyleSheetNew");
+    return self;
+}
+
+/*	Free off a style sheet pointer
+*/
+HTStyleSheet *HTStyleSheetFree(HTStyleSheet *self)
+{
+    HTStyle *style;
+
+    while ((style = self->styles) != 0) {
+	self->styles = style->next;
+	HTStyleFree(style);
+    }
+    FREE(self);
+    return NULL;
+}
+
+/*	Read a stylesheet from a typed stream
+ *	-------------------------------------
+ *
+ *	Reads a style sheet from a stream.  If new styles have the same names
+ *	as existing styles, they replace the old ones without changing the ids.
+ */
+
+#ifdef NEXT_SUPRESS		/* Only on the NeXT */
+HTStyleSheet *HTStyleSheetRead(HTStyleSheet *self, NXStream * stream)
+{
+    int numStyles;
+    int i;
+    HTStyle *style;
+    char styleName[80];
+
+    NXScanf(stream, " %d ", &numStyles);
+    CTRACE((tfp, "Stylesheet: Reading %d styles\n", numStyles));
+    for (i = 0; i < numStyles; i++) {
+	NXScanf(stream, "%s", styleName);
+	style = HTStyleNamed(self, styleName);
+	if (!style) {
+	    style = HTStyleNewNamed(styleName);
+	    (void) HTStyleSheetAddStyle(self, style);
+	}
+	(void) HTStyleRead(style, stream);
+	if (TRACE)
+	    HTStyleDump(style);
+    }
+    return self;
+}
+
+/*	Write a stylesheet to a typed stream
+ *	------------------------------------
+ *
+ *	Writes a style sheet to a stream.
+ */
+
+HTStyleSheet *HTStyleSheetWrite(HTStyleSheet *self, NXStream * stream)
+{
+    int numStyles = 0;
+    HTStyle *style;
+
+    for (style = self->styles; style; style = style->next)
+	numStyles++;
+    NXPrintf(stream, "%d\n", numStyles);
+
+    CTRACE((tfp, "StyleSheet: Writing %d styles\n", numStyles));
+    for (style = self->styles; style; style = style->next) {
+	NXPrintf(stream, "%s ", style->name);
+	(void) HTStyleWrite(style, stream);
+    }
+    return self;
+}
+#endif /* NEXT_SUPRESS */