winhelp: Read keywords.

programs/winhelp/hlpfile.c

@@ -86,6 +86,7 @@ static BOOL  HLPFILE_UncompressLZ77_Phrases(HLPFILE*);
 static BOOL  HLPFILE_Uncompress_Phrases40(HLPFILE*);
 static BOOL  HLPFILE_Uncompress_Topic(HLPFILE*);
 static BOOL  HLPFILE_GetContext(HLPFILE*);
+static BOOL  HLPFILE_GetKeywords(HLPFILE*);
 static BOOL  HLPFILE_GetMap(HLPFILE*);
 static BOOL  HLPFILE_AddPage(HLPFILE*, BYTE*, BYTE*, unsigned);
 static BOOL  HLPFILE_AddParagraph(HLPFILE*, BYTE *, BYTE*, unsigned*);
@@ -393,6 +394,7 @@ static BOOL HLPFILE_DoReadHlpFile(HLPFILE *hlpfile, LPCSTR lpszPath)
             ref = GET_UINT(buf, 0xc);
     } while (ref != 0xffffffff);
 
+    HLPFILE_GetKeywords(hlpfile);
     HLPFILE_GetMap(hlpfile);
     if (hlpfile->version <= 16) return TRUE;
     return HLPFILE_GetContext(hlpfile);
@@ -2026,6 +2028,39 @@ static BOOL HLPFILE_GetContext(HLPFILE *hlpfile)
 
 /***********************************************************************
  *
+ *           HLPFILE_GetKeywords
+ */
+static BOOL HLPFILE_GetKeywords(HLPFILE *hlpfile)
+{
+    BYTE                *cbuf, *cend;
+    unsigned            clen;
+
+    if (!HLPFILE_FindSubFile("|KWBTREE",  &cbuf, &cend)) return FALSE;
+    clen = cend - cbuf;
+    hlpfile->kwbtree = HeapAlloc(GetProcessHeap(), 0, clen);
+    if (!hlpfile->kwbtree) return FALSE;
+    memcpy(hlpfile->kwbtree, cbuf, clen);
+
+    if (!HLPFILE_FindSubFile("|KWDATA",  &cbuf, &cend))
+    {
+        WINE_ERR("corrupted help file: kwbtree present but kwdata absent\n");
+        HeapFree(GetProcessHeap(), 0, hlpfile->kwbtree);
+        return FALSE;
+    }
+    clen = cend - cbuf;
+    hlpfile->kwdata = HeapAlloc(GetProcessHeap(), 0, clen);
+    if (!hlpfile->kwdata)
+    {
+        HeapFree(GetProcessHeap(), 0, hlpfile->kwdata);
+        return FALSE;
+    }
+    memcpy(hlpfile->kwdata, cbuf, clen);
+
+    return TRUE;
+}
+
+/***********************************************************************
+ *
  *           HLPFILE_GetMap
  */
 static BOOL HLPFILE_GetMap(HLPFILE *hlpfile)

programs/winhelp/hlpfile.h

@@ -124,6 +124,8 @@ typedef struct tagHlpFileFile
     HLPFILE_PAGE*               first_page;
     HLPFILE_MACRO*              first_macro;
     BYTE*                       Context;
+    BYTE*                       kwbtree;
+    BYTE*                       kwdata;
     unsigned                    wMapLen;
     HLPFILE_MAP*                Map;
     unsigned long               contents_start;