Xml2Txt [C/C++]

Xml2Txt

Publicado por Talvanes Ferreira de Sousa (última atualização em 29/08/2014)

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Download Xml2TxtV1.0.cs

Download Xml2TxtV2.1.cs (versão 2)

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Este programa converte arquivos XML em um formato TXT customizado, ou seja, o código <elemento chave1="valor1" chave2="valor2">Texto</elemento> é "transformado" em:

"ELEMENTO[ chave1="valor1" chave2="valor2" ]: Texto /ELEMENTO".

Versões atualizadas deste script

Versão 2 - Enviado por Talvanes Ferreira de Sousa em 26/08/2014

Changelog:
Xml2Txt(v. 2.1): A utility to convert XML files into a hierarchical-based TXT format. Also performs batch conversion.

Usage:
Xml2Txt [--working-dir/-w work_dir] [--dest-dir/-d dest_dir] file1.xml file2.xml file3.xml (...)
Xml2Txt --help/-h
Xml2Txt --version/-v

where:
--working-dir/-w: working directory, where all XML files must be. By default, it is in the same directory as the executable program (exec_dir);
--dest-dir/-d: destination directory, where all resulting ".xml.txt" files will be placed into. By default, it is also exec_dir;
file1.xml file2.xml file3.xml (...): one or more XML files that are going to be processed in the working dir. This is mandatory;
--help/-h: shows program help;
--version/-v: shows software version.

Traduzindo:

Xml2Txt(v. 2.1): Um utilitário para converter arquivos XML em um formato de texto hierarquizado. Também converte em série.

Uso:
Xml2Txt [--working-dir/-w work_dir] [--dest-dir/-d dest_dir] file1.xml file2.xml file3.xml (...)
Xml2Txt --help/-h
Xml2Txt --version/-v

Onde:
--working-dir/-w: diretório de trabalho (ou de origem), onde todos os XML deverão estar. Por padrão, é no mesmo diretório do programa executável (exec_dir);
--dest-dir/-d: diretório de destino, onde todos os arquivos ".xml.txt" resultantes serão colocados. Por padrão, também é exec_dir;
file1.xml file2.xml file3.xml (...): sequência de um ou mais arquivos XML que serão processados no diretório de trabalho. Obrigatório;
--help/-h: exibe a ajuda do programa;
--version/-v: exibe a versão do programa.

Download Xml2TxtV2.1.cs

Esconder código-fonte

/*
 * Criado por SharpDevelop.
 * Usuário: talba
 * Data: 15/08/2014
 * Hora: 17:14
 *
 * Adapted from Microsoft Developer Network
 *      XmlTextReader.Read Method,
 *      Site: http://msdn.microsoft.com/en-us/library/system.xml.xmltextreader.read%28v=vs.110%29.aspx?cs-save-lang=1&cs-lang=vb#code-snippet-1
 *      Reading Attributes
 *      Site: http://msdn.microsoft.com/en-US/library/by2bd43b%28v=vs.80%29.aspx
 *      XmlTextReader Encoding (forum post)
 *      Site: http://forums.asp.net/t/1283805.aspx?XmlTextReader+Encoding
 * and Tutorials Point C# Programming
 *      StreamReader and StreamWriter
 *      Site: http://www.tutorialspoint.com/csharp/csharp_text_files.htm
 *
 */
using System;
using System.IO;
using System.Text;
using System.Xml;

namespace Xml2Txt
{
    class Program
    {
        /// <summary>
        /// Xml2Txt: Um método interno para este programa, o qual será responsável por converter arquivos XML em TXT customizado (versão 1.0). Obs.: até o momento, o programa suporta apenas geração de TXT no mesmo diretório do(s) XML(s), os quais têm de ser informados explicitamente. Ainda não há texto de ajuda.
        /// </summary>
        /// <param name="nomeArquivo">Caminho do arquivo a ser processado pela função.</param>
        static void Xml2Txt(string nomeArquivo)
        {
            try {
                /*
                 * Criando arquivo no disco para leitura:
                 *  um fluxo com codificação UTF-8 para suporte Unicode seguido do leitor Xml
                 */
                using (StreamReader leitor = new StreamReader(nomeArquivo, Encoding.UTF8))
                {
                    using (XmlTextReader xml = new XmlTextReader(leitor))
                    {
                        // retirando os espaços em branco do arquivo
                        xml.WhitespaceHandling = WhitespaceHandling.None;

                        /*
                         * Abrindo arquivo txt para escrita, que será criado a partir do XML fornecido
                         */
                        if (!File.Exists(nomeArquivo + ".txt")) // criar "arquivo.txt" se este existir
                        {
                            using (StreamWriter txt = new StreamWriter(nomeArquivo + ".txt", false, Encoding.UTF8))
                            {
                                /*
                                 * Um laço (loop) para ler cada nodo (ou tag) do XML
                                 */
                                while (xml.Read())
                                {
                                    // espaços em branco (tabulações)
                                    for (int tabs = 0; tabs < xml.Depth; tabs++) {
                                        txt.Write("\t");
                                    }

                                    /*
                                     * Identificando os elementos XML: Element, EndElement, Text, Comment, etc.
                                     */
                                    switch(xml.NodeType)
                                    {
                                            /*
                                             * (1) Elemento:
                                             *      <element> (...) </element> => ELEMENT: (...) /ELEMENT
                                             *      <element/> => ELEMENT
                                             *      <element key="value"> => ELEMENT[key:value]
                                             * */
                                            case XmlNodeType.Element:
                                                txt.Write("{0}", xml.Name);
                                                // verificar se o elemento XML possui atributos
                                                if (xml.HasAttributes)
                                                {
                                                    txt.Write("[ ");

                                                    // mostrar os atributos do elemento
                                                    while (xml.MoveToNextAttribute())
                                                    {
                                                        txt.Write("{0}:\"{1}\" ", xml.Name, xml.Value);
                                                    }
                                                    // voltar ao elemento
                                                    xml.MoveToElement();

                                                    txt.Write("]");
                                                }
                                                // não mostrar delimitador dois-pontos (:) se o elemento for vazio
                                                if (xml.IsEmptyElement) txt.WriteLine();
                                                else txt.WriteLine(":");
                                                break;

                                            /*
                                             * (2) Fim de elemento:
                                             *      </element> => /ELEMENT
                                             * */
                                            case XmlNodeType.EndElement:
                                                txt.WriteLine("/{0}", xml.Name);
                                                break;

                                             /*
                                              * (3) Texto:
                                              *     <element> text </element> => ELEMENT: text /ELEMENT
                                              * */
                                            case XmlNodeType.Text:
                                                txt.WriteLine("{0}", xml.Value);
                                                break;

                                            /*
                                             * (4) Comentário:
                                             *      <!-- comentário --> =>  # comentário (uma cerquilha por linha)
                                             * */
                                            case XmlNodeType.Comment:
                                            // forjando comentário de linha com cerquilha (#)
                                            Array.ForEach<string>(
                                                // caractere de escape ('\n') para separar as linhas do texto
                                                xml.Value.Split('\n'),
                                                // dando uma tabulação e gravando no arquivo
                                                lin => txt.WriteLine("# {0}", lin)
                                            );
                                            break;

                                            /*
                                             * (5) Declaração XML (primeira linha do arquivo)
                                             *  <?xml version="1.0" encoding="utf-8"?> => XML VERSION 1.0 ENCODING UTF-8
                                             * */
                                            case XmlNodeType.XmlDeclaration:
                                                txt.WriteLine("XML VERSION 1.0 ENCODING UTF-8");
                                                break;

                                            /*
                                             * (6) Declaração CDATA:
                                             *      <![CDATA[texto]]> => CDATA texto
                                             * */
                                            case XmlNodeType.CDATA:
                                                txt.WriteLine("CDATA {0}", xml.Value);
                                                break;

                                            /*
                                             * (7) Processamento de Instrução:
                                             *      <? nome valor ?> => PROC nome valor
                                             * */
                                            case XmlNodeType.ProcessingInstruction:
                                                txt.WriteLine("PROC {0} -> {1}", xml.Name, xml.Value);
                                                break;

                                            /*
                                             * (8) Entidade:
                                             *      &entity => 'entity'
                                             * */
                                            case XmlNodeType.Entity:
                                                txt.WriteLine("ENTITY {0} {1}", xml.Name, xml.Value);
                                                break;

                                            /*
                                             * (9) Declaração ENTITY:
                                             *      <!ENTITY nome texto> => ENTITY nome texto
                                             * */
                                            case XmlNodeType.EntityReference:
                                                txt.Write("\'{0}\'", xml.Name);
                                                break;

                                            /*
                                             * (10) Documento: é a raíz do XML, e XmlTextReader não possui ação sobre ele.
                                             * */
                                            case XmlNodeType.Document:
                                                break;

                                            /*
                                             * (11) Declaração DOCTYPE:
                                             * <!DOCTYPE nome [valor]> =>
                                             *      DOCTYPE nome [
                                             *          valor
                                             *      ]
                                             */
                                            case XmlNodeType.DocumentType:
                                            // DOCTYPE: nome
                                            txt.WriteLine("DOCTYPE {0}\n[", xml.Name);
                                            // DOCTYPE: valor => mostrar linha por linha
                                            Array.ForEach<string>(
                                                // caractere de escape ('\n') para separar as linhas do texto
                                                xml.Value.Split('\n'),
                                                // dando uma tabulação e gravando no arquivo
                                                lin => txt.WriteLine("\t{0}", lin)
                                            );
                                            txt.WriteLine("]");
                                            break;
                                    }

                                }
                            }
                        }


                    }
                }

            } catch (IOException e) {
                // Erro de entrada e saída
                Console.WriteLine("Cannot read file\n{0}", e.Message);
            } catch (XmlException e) {
                // Não é arquivo XML ou contém caracteres malformados
                Console.WriteLine("XML parse error\n{0}", e.Message);
            } catch (UnauthorizedAccessException e) {
                // Acesso não autorizado
                Console.WriteLine("Cannot access file\n{0}", e.Message);
            }
        }

        public static void Main(string[] args)
        {
            /*
             * Processando todos os argumentos de linha de comando
             * */
            foreach (string arg in args)
            {
                // XML para TXT
                Xml2Txt(arg);
            }
        }
    }
}

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