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背景

本来想解析VS的项目配置文件(*.vcxproj)，配合cppclean来发现多余的#incldue。

结果发现低估了难度，VS会间接引入许多目录。

略有不甘，暂且作为一个解析XML文件的示例。

代码

VSProjectParser.h

#include <QVector>
#include <memory>class VSProjectParser {
public:VSProjectParser (const QString &vsProjectFilePath);QVector<QString> getIncludeDirectoriesRealPath ();QVector<QString> getCppFilesRealPath ();QVector<QString> getHeadFilesRealPath ();private:class Impl;std::shared_ptr<Impl> m_impl = nullptr;
};

VSProjectParser.cpp

#include "VSProjectParser.h"#include <QDebug>
#include <QDir>
#include <QDomDocument>
#include <QDomElement>
#include <QDomNode>
#include <QFile>
#include <QFileInfo>
#include <QHash>
#include <memory>class Document {
public:Document (const QString &projFilePath);QVector<QString> extractCppFiles ();QVector<QString> extractHeadFiles ();private:void extractTasgInfo ();QHash<QString, QVector<QString>> m_tagsInfo = {};QString m_projFilePath						= "";
};class VSProjectParser::Impl {
public:Impl (const QString &vsProjectFilePath) : m_vsProjectFileInfo (vsProjectFilePath), m_document (vsProjectFilePath){}QFileInfo m_vsProjectFileInfo = "";Document m_document;
};Document::Document (const QString &projFilePath) : m_projFilePath (projFilePath)
{extractTasgInfo();
}QVector<QString>
Document::extractCppFiles()
{QVector<QString> cppTags {"ClCompile"};QVector<QString> ret;for (QString tag : cppTags) {if (m_tagsInfo.contains (tag))ret.append (m_tagsInfo.value (tag));}return ret;
}QVector<QString>
Document::extractHeadFiles()
{QVector<QString> headTags {"ClInclude", "QtMoc"};QVector<QString> ret;for (QString tag : headTags) {if (m_tagsInfo.contains (tag))ret.append (m_tagsInfo.value (tag));}return ret;
}void
Document::extractTasgInfo()
{QFile file (m_projFilePath);if (!file.open (QIODevice::ReadOnly)) {qDebug() << "Failed to open the file.";return;}QDomDocument doc;if (!doc.setContent (&file)) {qDebug() << "Failed to parse the file into a DOM tree.";return;}file.close();QDomElement root = doc.documentElement();QHash<QString, QVector<QString>> tags_with_include_attribute;constexpr auto ATTR_INCLUDE = "Include";QDomNodeList itemGroups = root.elementsByTagName ("ItemGroup");for (int i = 0; i < itemGroups.count(); ++i) {QDomNode itemGroup	  = itemGroups.at (i);QDomNodeList children = itemGroup.childNodes();for (int j = 0; j < children.count(); ++j) {QDomNode child = children.at (j);if (child.isElement()) {QDomElement element = child.toElement();QString tagName		= element.tagName();tags_with_include_attribute[tagName].push_back (element.attribute (ATTR_INCLUDE));}}}QVector<QString> keys;m_tagsInfo = tags_with_include_attribute;
}VSProjectParser::VSProjectParser (const QString &vsProjectFilePath) : m_impl (new Impl (vsProjectFilePath))
{
}QVector<QString>
VSProjectParser::getIncludeDirectoriesRealPath()
{QVector<QString> headers = getHeadFilesRealPath();QVector<QString> ret;for (QString &file : headers) {QFileInfo fileInfo (file);if (!fileInfo.exists()) {qDebug() << __FUNCTION__ << "File not found:" << file;continue;}ret.append (fileInfo.dir().absolutePath());}return ret;
}QVector<QString>
VSProjectParser::getCppFilesRealPath()
{QVector<QString> includes = m_impl->m_document.extractCppFiles();QVector<QString> ret;for (QString &file : includes) {file = m_impl->m_vsProjectFileInfo.dir().absolutePath() + "/" + file;QFileInfo fileInfo (file);if (fileInfo.exists())ret.append (fileInfo.absoluteFilePath());elseqDebug() << __FUNCTION__ << "File not found:" << file;}return ret;
}QVector<QString>
VSProjectParser::getHeadFilesRealPath()
{QVector<QString> includes = m_impl->m_document.extractHeadFiles();QVector<QString> ret;for (QString &file : includes) {file = m_impl->m_vsProjectFileInfo.dir().absolutePath() + "/" + file;QFileInfo fileInfo (file);if (fileInfo.exists())ret.append (fileInfo.absoluteFilePath());elseqDebug() << __FUNCTION__ << "File not found:" << file;}return ret;
}