Changeset - r14665:3e40198321ce
[Not reviewed]
master
0 2 0
yexo - 15 years ago 2010-02-25 20:00:11
yexo@openttd.org
(svn r19254) -Codechange: simplify newgrf text code by introducing a few helper functions
1 file changed with 67 insertions and 41 deletions:
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src/newgrf_text.cpp
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@@ -326,6 +326,28 @@ char *TranslateTTDPatchCodes(uint32 grfi
 
	return tmp;
 
}
 

	
 
/**
 
 * Add a GRFText to a GRFText list.
 
 * @param list The list where the text should be added to.
 
 * @param text_to_add The GRFText to add to the list.
 
 */
 
void AddGRFTextToList(GRFText **list, GRFText *text_to_add)
 
{
 
	GRFText **ptext, *text;
 

	
 
	/* Loop through all languages and see if we can replace a string */
 
	for (ptext = list; (text = *ptext) != NULL; ptext = &text->next) {
 
		if (text->langid == text_to_add->langid) {
 
			text_to_add->next = text->next;
 
			*ptext = text_to_add;
 
			delete text;
 
			return;
 
		}
 
	}
 

	
 
	/* If a string wasn't replaced, then we must append the new string */
 
	*ptext = text_to_add;
 
}
 

	
 
/**
 
 * Add the new read string into our structure.
 
@@ -375,24 +397,8 @@ StringID AddGRFString(uint32 grfid, uint
 
		_grf_text[id].grfid      = grfid;
 
		_grf_text[id].stringid   = stringid;
 
		_grf_text[id].def_string = def_string;
 
		_grf_text[id].textholder = newtext;
 
	} else {
 
		GRFText **ptext, *text;
 
		bool replaced = false;
 

	
 
		/* Loop through all languages and see if we can replace a string */
 
		for (ptext = &_grf_text[id].textholder; (text = *ptext) != NULL; ptext = &text->next) {
 
			if (text->langid != langid_to_add) continue;
 
			newtext->next = text->next;
 
			*ptext = newtext;
 
			delete text;
 
			replaced = true;
 
			break;
 
		}
 

	
 
		/* If a string wasn't replaced, then we must append the new string */
 
		if (!replaced) *ptext = newtext;
 
	}
 
	AddGRFTextToList(&_grf_text[id].textholder, newtext);
 

	
 
	grfmsg(3, "Added 0x%X: grfid %08X string 0x%X lang 0x%X string '%s'", id, grfid, stringid, newtext->langid, newtext->text);
 

	
 
@@ -422,31 +428,43 @@ StringID GetGRFStringID(uint32 grfid, ui
 
}
 

	
 

	
 
/**
 
 * Get a C-string from a GRFText-list. If there is a translation for the
 
 * current language it is returned, otherwise the default translation
 
 * is returned. If there is neither a default nor a translation for the
 
 * current language NULL is returned.
 
 * @param text The GRFText to get the string from.
 
 */
 
const char *GetGRFStringFromGRFText(const GRFText *text)
 
{
 
	const char *default_text = NULL;
 

	
 
	/* Search the list of lang-strings of this stringid for current lang */
 
	for (; text != NULL; text = text->next) {
 
		if (text->langid == _currentLangID) return text->text;
 

	
 
		/* If the current string is English or American, set it as the
 
		 * fallback language if the specific language isn't available. */
 
		if (text->langid == GRFLX_UNSPECIFIED || (default_text == NULL && (text->langid == GRFLX_ENGLISH || text->langid == GRFLX_AMERICAN))) {
 
			default_text = text->text;
 
		}
 
	}
 

	
 
	return default_text;
 
}
 

	
 
/**
 
 * Get a C-string from a stringid set by a newgrf.
 
 */
 
const char *GetGRFStringPtr(uint16 stringid)
 
{
 
	const GRFText *default_text = NULL;
 
	const GRFText *search_text;
 

	
 
	assert(_grf_text[stringid].grfid != 0);
 

	
 
	/* Remember this grfid in case the string has included text */
 
	_last_grfid = _grf_text[stringid].grfid;
 

	
 
	/* Search the list of lang-strings of this stringid for current lang */
 
	for (search_text = _grf_text[stringid].textholder; search_text != NULL; search_text = search_text->next) {
 
		if (search_text->langid == _currentLangID) {
 
			return search_text->text;
 
		}
 

	
 
		/* If the current string is English or American, set it as the
 
		 * fallback language if the specific language isn't available. */
 
		if (search_text->langid == GRFLX_UNSPECIFIED || (default_text == NULL && (search_text->langid == GRFLX_ENGLISH || search_text->langid == GRFLX_AMERICAN))) {
 
			default_text = search_text;
 
		}
 
	}
 

	
 
	/* If there is a fallback string, return that */
 
	if (default_text != NULL) return default_text->text;
 
	const char *str = GetGRFStringFromGRFText(_grf_text[stringid].textholder);
 
	if (str != NULL) return str;
 

	
 
	/* Use the default string ID if the fallback string isn't available */
 
	return GetStringPtr(_grf_text[stringid].def_string);
 
@@ -480,6 +498,19 @@ bool CheckGrfLangID(byte lang_id, byte g
 
}
 

	
 
/**
 
 * Delete all items of a linked GRFText list.
 
 * @param grftext the head of the list to delete
 
 */
 
void CleanUpGRFText(GRFText *grftext)
 
{
 
	while (grftext != NULL) {
 
		GRFText *grftext2 = grftext->next;
 
		delete grftext;
 
		grftext = grftext2;
 
	}
 
}
 

	
 
/**
 
 * House cleaning.
 
 * Remove all strings and reset the text counter.
 
 */
 
@@ -488,12 +519,7 @@ void CleanUpStrings()
 
	uint id;
 

	
 
	for (id = 0; id < _num_grf_texts; id++) {
 
		GRFText *grftext = _grf_text[id].textholder;
 
		while (grftext != NULL) {
 
			GRFText *grftext2 = grftext->next;
 
			delete grftext;
 
			grftext = grftext2;
 
		}
 
		CleanUpGRFText(_grf_text[id].textholder);
 
		_grf_text[id].grfid      = 0;
 
		_grf_text[id].stringid   = 0;
 
		_grf_text[id].textholder = NULL;
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