riched20: Add the ability to create ME_Strings from constants.
Signed-off-by: Huw Davies <huw@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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@ -100,6 +100,7 @@ void ME_DumpDocument(ME_TextBuffer *buffer) DECLSPEC_HIDDEN;
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/* string.c */
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ME_String *ME_MakeStringN(LPCWSTR szText, int nMaxChars) DECLSPEC_HIDDEN;
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ME_String *ME_MakeStringR(WCHAR cRepeat, int nMaxChars) DECLSPEC_HIDDEN;
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ME_String *ME_MakeStringConst(const WCHAR *str, int len) DECLSPEC_HIDDEN;
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void ME_DestroyString(ME_String *s) DECLSPEC_HIDDEN;
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BOOL ME_AppendString(ME_String *s, const WCHAR *append, int len) DECLSPEC_HIDDEN;
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ME_String *ME_VSplitString(ME_String *orig, int nVPos) DECLSPEC_HIDDEN;
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@ -58,6 +58,7 @@ typedef struct tagME_String
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{
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WCHAR *szData;
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int nLen, nBuffer;
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void (*free)(struct tagME_String *);
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} ME_String;
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typedef struct tagME_FontCacheItem
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@ -27,10 +27,37 @@ static int ME_GetOptimalBuffer(int nLen)
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return ((sizeof(WCHAR) * nLen) + 128) & ~63;
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}
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static ME_String *make_string( void (*free)(ME_String *) )
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{
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ME_String *s = heap_alloc( sizeof(*s) );
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if (s) s->free = free;
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return s;
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}
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/* Create a ME_String using the const string provided.
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* str must exist for the lifetime of the returned ME_String.
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*/
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ME_String *ME_MakeStringConst(const WCHAR *str, int len)
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{
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ME_String *s = make_string( NULL );
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if (!s) return NULL;
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s->szData = (WCHAR *)str;
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s->nLen = len;
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s->nBuffer = 0;
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return s;
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}
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static void heap_string_free(ME_String *s)
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{
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heap_free( s->szData );
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}
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/* Create a buffer (uninitialized string) of size nMaxChars */
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static ME_String *ME_MakeStringB(int nMaxChars)
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{
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ME_String *s = heap_alloc( sizeof(*s) );
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ME_String *s = make_string( heap_string_free );
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if (!s) return NULL;
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s->nLen = nMaxChars;
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@ -69,7 +96,7 @@ ME_String *ME_MakeStringR(WCHAR cRepeat, int nMaxChars)
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void ME_DestroyString(ME_String *s)
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{
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if (!s) return;
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heap_free( s->szData );
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if (s->free) s->free( s );
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heap_free( s );
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}
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@ -78,6 +105,7 @@ BOOL ME_InsertString(ME_String *s, int ofs, const WCHAR *insert, int len)
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DWORD new_len = s->nLen + len + 1;
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WCHAR *new;
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assert( s->nBuffer ); /* Not a const string */
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assert( ofs <= s->nLen );
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if( new_len > s->nBuffer )
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@ -104,9 +132,7 @@ ME_String *ME_VSplitString(ME_String *orig, int charidx)
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{
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ME_String *s;
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/*if (charidx<0) charidx = 0;
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if (charidx>orig->nLen) charidx = orig->nLen;
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*/
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assert(orig->nBuffer); /* Not a const string */
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assert(charidx>=0);
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assert(charidx<=orig->nLen);
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@ -122,6 +148,7 @@ void ME_StrDeleteV(ME_String *s, int nVChar, int nChars)
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{
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int end_ofs = nVChar + nChars;
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assert(s->nBuffer); /* Not a const string */
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assert(nChars >= 0);
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assert(nVChar >= 0);
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assert(end_ofs <= s->nLen);
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