static private ChooseLocalizedText ( |
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arrayNode | /// the alt text array node | |
genericLang | string | /// the generic language |
specificLang | string | /// the specific language |
Résultat | object[] |
/// <exception cref="XmpException"> </exception> /// <seealso cref= XMPMeta#getLocalizedText(String, String, String, String) </seealso> public virtual IXmpProperty GetLocalizedText(string schemaNs, string altTextName, string genericLang, string specificLang) { ParameterAsserts.AssertSchemaNs(schemaNs); ParameterAsserts.AssertArrayName(altTextName); ParameterAsserts.AssertSpecificLang(specificLang); genericLang = genericLang != null?Utils.NormalizeLangValue(genericLang) : null; specificLang = Utils.NormalizeLangValue(specificLang); XmpPath arrayPath = XmpPathParser.ExpandXPath(schemaNs, altTextName); XmpNode arrayNode = XmpNodeUtils.FindNode(_tree, arrayPath, false, null); if (arrayNode == null) { return(null); } object[] result = XmpNodeUtils.ChooseLocalizedText(arrayNode, genericLang, specificLang); int match = (int)((int?)result[0]); XmpNode itemNode = (XmpNode)result[1]; if (match != XmpNodeUtils.CLT_NO_VALUES) { return(new XmpPropertyImpl1(itemNode)); } return(null); }
/// <seealso cref= XMPMeta#setLocalizedText(String, String, String, String, String, /// PropertyOptions) </seealso> public virtual void SetLocalizedText(string schemaNs, string altTextName, string genericLang, string specificLang, string itemValue, PropertyOptions options) { ParameterAsserts.AssertSchemaNs(schemaNs); ParameterAsserts.AssertArrayName(altTextName); ParameterAsserts.AssertSpecificLang(specificLang); genericLang = genericLang != null?Utils.NormalizeLangValue(genericLang) : null; specificLang = Utils.NormalizeLangValue(specificLang); XmpPath arrayPath = XmpPathParser.ExpandXPath(schemaNs, altTextName); // Find the array node and set the options if it was just created. XmpNode arrayNode = XmpNodeUtils.FindNode(_tree, arrayPath, true, new PropertyOptions(PropertyOptions.ARRAY | PropertyOptions.ARRAY_ORDERED | PropertyOptions.ARRAY_ALTERNATE | PropertyOptions.ARRAY_ALT_TEXT)); if (arrayNode == null) { throw new XmpException("Failed to find or create array node", XmpError.BADXPATH); } if (!arrayNode.Options.ArrayAltText) { if (!arrayNode.HasChildren() && arrayNode.Options.ArrayAlternate) { arrayNode.Options.ArrayAltText = true; } else { throw new XmpException("Specified property is no alt-text array", XmpError.BADXPATH); } } // Make sure the x-default item, if any, is first. bool haveXDefault = false; XmpNode xdItem = null; foreach (XmpNode currItem in arrayNode.Children) { if (!currItem.HasQualifier() || !XML_LANG.Equals(currItem.GetQualifier(1).Name)) { throw new XmpException("Language qualifier must be first", XmpError.BADXPATH); } if (X_DEFAULT.Equals(currItem.GetQualifier(1).Value)) { xdItem = currItem; haveXDefault = true; break; } } // Moves x-default to the beginning of the array if (xdItem != null && arrayNode.ChildrenLength > 1) { arrayNode.RemoveChild(xdItem); arrayNode.AddChild(1, xdItem); } // Find the appropriate item. // chooseLocalizedText will make sure the array is a language // alternative. object[] result = XmpNodeUtils.ChooseLocalizedText(arrayNode, genericLang, specificLang); int match = (int)((int?)result[0]); XmpNode itemNode = (XmpNode)result[1]; bool specificXDefault = X_DEFAULT.Equals(specificLang); switch (match) { case XmpNodeUtils.CLT_NO_VALUES: // Create the array items for the specificLang and x-default, with // x-default first. XmpNodeUtils.AppendLangItem(arrayNode, X_DEFAULT, itemValue); haveXDefault = true; if (!specificXDefault) { XmpNodeUtils.AppendLangItem(arrayNode, specificLang, itemValue); } break; case XmpNodeUtils.CLT_SPECIFIC_MATCH: if (!specificXDefault) { // Update the specific item, update x-default if it matches the // old value. if (haveXDefault && xdItem != itemNode && xdItem != null && xdItem.Value.Equals(itemNode.Value)) { xdItem.Value = itemValue; } // ! Do this after the x-default check! itemNode.Value = itemValue; } else { // Update all items whose values match the old x-default value. Debug.Assert(haveXDefault && xdItem == itemNode); foreach (XmpNode currItem in arrayNode.Children) { if (currItem == xdItem || !currItem.Value.Equals(xdItem != null ? xdItem.Value : null)) { continue; } currItem.Value = itemValue; } // And finally do the x-default item. if (xdItem != null) { xdItem.Value = itemValue; } } break; case XmpNodeUtils.CLT_SINGLE_GENERIC: // Update the generic item, update x-default if it matches the old // value. if (haveXDefault && xdItem != itemNode && xdItem != null && xdItem.Value.Equals(itemNode.Value)) { xdItem.Value = itemValue; } itemNode.Value = itemValue; // ! Do this after // the x-default // check! break; case XmpNodeUtils.CLT_MULTIPLE_GENERIC: // Create the specific language, ignore x-default. XmpNodeUtils.AppendLangItem(arrayNode, specificLang, itemValue); if (specificXDefault) { haveXDefault = true; } break; case XmpNodeUtils.CLT_XDEFAULT: // Create the specific language, update x-default if it was the only // item. if (xdItem != null && arrayNode.ChildrenLength == 1) { xdItem.Value = itemValue; } XmpNodeUtils.AppendLangItem(arrayNode, specificLang, itemValue); break; case XmpNodeUtils.CLT_FIRST_ITEM: // Create the specific language, don't add an x-default item. XmpNodeUtils.AppendLangItem(arrayNode, specificLang, itemValue); if (specificXDefault) { haveXDefault = true; } break; default: // does not happen under normal circumstances throw new XmpException("Unexpected result from ChooseLocalizedText", XmpError.INTERNALFAILURE); } // Add an x-default at the front if needed. if (!haveXDefault && arrayNode.ChildrenLength == 1) { XmpNodeUtils.AppendLangItem(arrayNode, X_DEFAULT, itemValue); } }