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@@ -0,0 +1,1030 @@
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+#include "CmpareMode.h"
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+#include "Encode.h"
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+#include "rcglobal.h"
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+
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+#include <QFile>
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+#include <QFileDevice>
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+#include <QVector>
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+#include <QCryptographicHash>
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+#include <functional>
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+#include <QDataStream>
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+#include <QtConcurrent>
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+
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+
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+CmpareMode::CmpareMode()
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+{
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+}
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+
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+
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+CmpareMode::~CmpareMode()
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+{
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+
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+}
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+
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+//识别文字编码,并将文字按照原始编码格式,转换为QString。如果失败,默认按照utf8的格式进行转换;
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+bool CmpareMode::recognizeTextCode(QByteArray & text, LineFileInfo &lineInfo, QString &outUnicodeText)
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+{
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+ int lineNums = lineInfo.lineNums;
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+
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+ int length = text.count();
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+
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+ int result = false;
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+
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+ //第一行时,检测一下文件编码,返回值也是文件的编码
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+ if (0 == lineNums)
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+ {
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+ int skip = 0;
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+ lineInfo.code = Encode::DetectEncode((uchar*) text.data(), length, skip);
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+ //根据编码跳过第一行前面的几个字符编码标识字段
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+ if (skip > 0)
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+ {
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+ text = text.mid(skip);
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+ }
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+
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+ return Encode::tranStrToUNICODE((CODE_ID)lineInfo.code, text.data(), text.count(), outUnicodeText);
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+
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+ }
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+ else
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+ {
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+ /*对于头部没有标识的行,需要每行进行详细检查,比较耗时
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+ *对于第一行已经是GBK的编码,标识出所有的确是GBK的行号
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+ *严格来说,如果以后要做国际版,不应该只考虑GBK,而是要考虑本地ASNI编码。
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+ *对中国而言,本地ASNI编码是GBK,对其它国家,比如日本/韩国而言,这些ASNI是它们本国
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+ *对应的本地编码。
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+ */
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+//#if 0
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+// //全部都在ascii范围以内,就作为ascii码。注意ASCII处理时其它地方时按照UTF8进行编码的
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+// if (Encode::CheckTextIsAllAscii((uchar*)text.data(), length))
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+// {
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+// lineInfo.code = CODE_ID::ASCII;
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+// return Encode::tranStrToUNICODE((CODE_ID)lineInfo.code, text.data(), length, outUnicodeText);
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+// }
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+// else
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+// {
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+//#endif
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+ CODE_ID actualCode = Encode::CheckUnicodeWithoutBOM((uchar*)text.data(), length, outUnicodeText);
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+ if (CODE_ID::UTF8_NOBOM == actualCode)
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+ {
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+ lineInfo.code = CODE_ID::UTF8_NOBOM;
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+ result = true;
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+ }
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+ else if (CODE_ID::GBK == actualCode)
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+ {
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+ //如果发现存在GBK,则要以GBK作为字符编码。这里识别gbk是因为显示的时候,需要转化gbk进行显示
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+ lineInfo.code = CODE_ID::GBK;
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+ result = true;
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+ }
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+ else if (CODE_ID::ANSI == actualCode)
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+ {
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+ lineInfo.code = CODE_ID::UNKOWN; //这里就是乱码了。即不是utf8也不是GBK,也不能说乱码,目前其它国家未处理的码
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+ result = false;
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+ }
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+//#if 0
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+// }
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+//#endif
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+ }
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+
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+ return result;
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+}
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+
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+
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+CODE_ID CmpareMode::getTextFileEncodeType(uchar* fileFpr, int fileLength, QString filePath)
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+{
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+
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+ if (fileLength >= 2 && fileFpr[0] == 0xFF && fileFpr[1] == 0xFE)
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+ {
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+ return CODE_ID::UNICODE_LE; //skip 2
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+ }
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+ else if (fileLength >= 2 && fileFpr[0] == 0xFE && fileFpr[1] == 0xFF)
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+ {
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+ return CODE_ID::UNICODE_BE; //skip 2
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+ }
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+ else if (fileLength >= 3 && fileFpr[0] == 0xEF && fileFpr[1] == 0xBB && fileFpr[2] == 0xBF)
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+ {
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+ return CODE_ID::UTF8_BOM; //skip 3 with BOM
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+ }
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+
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+ //走到这里说明没有文件头BOM,进行全盘文件扫描
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+ if (!filePath.isEmpty())
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+ {
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+ return scanFileRealCode(filePath);
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+ }
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+
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+ return CODE_ID::UNKOWN;
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+}
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+
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+//20210802:发现如果是CODE_ID::UNICODE_LE,\r\n变成了\r\0\n\0,读取readLine遇到\n就结束了,而且toUnicode也会变成乱码失败
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+//所以UNICODE_LE需要单独处理。该函数只处理Unicode_LE编码文件,事先一定要检查文件编码
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+CODE_ID CmpareMode::readLineFromFileWithUnicodeLe(uchar* m_fileFpr, const int fileLength, QList<LineFileInfo>& lineInfoVec, QList<LineFileInfo>& blankLineInfoVec,int mode, int &maxLineSize)
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+{
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+ QCryptographicHash md4(QCryptographicHash::Md4);
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+
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+ int lineNums = 0;
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+ CODE_ID code = CODE_ID::UNICODE_LE;
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+
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+ int lineStartPos = 2; //uicode_le前面有2个特殊标识,故跳过2
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+
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+ //获取一行在文件中
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+ auto getOneLineFromFile = [m_fileFpr](int& startPos, const int fileLength, QByteArray& ret)->bool{
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+
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+ if (startPos < fileLength)
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+ {
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+ ret.clear();
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+
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+ int lineLens = 0;
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+
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+ bool isFindLine = false;
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+
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+ for (int i = startPos; i < fileLength; ++i,++lineLens)
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+ {
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+ //遇到换行符号
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+ if (m_fileFpr[i] == 0x0A)
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+ {
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+ //lineLens需要加2,因为当前这个没有加,而且后面还有一个\0,这是le格式规定的
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+ ret.append((char*)(m_fileFpr + startPos), lineLens + 2);
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+ startPos += lineLens + 2;
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+ isFindLine = true;
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+ break;
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+ }
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+ }
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+
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+ //没有找到一行
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+ if (!isFindLine)
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+ {
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+ //最后一行,可能没有带\r\0直接返回
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+ ret.append((char*)(m_fileFpr + startPos), fileLength - startPos);
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+
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+ startPos = fileLength;
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+ }
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+
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+ return true;
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+
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+ }
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+
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+ return false;
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+ };
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+
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+ QByteArray line;
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+
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+ auto work = [mode, &md4](LineFileInfo& lineInfo, const int n) {
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+ if (mode == 0)
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+ {
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+ md4.addData(lineInfo.unicodeStr.trimmed().toUtf8());
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+ }
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+ else if (mode == 1)
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+ {
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+ md4.addData(lineInfo.unicodeStr.left(lineInfo.unicodeStr.length() - n).toUtf8());
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+ }
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+ else if (mode == 2)
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+ {
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+ QString temp = lineInfo.unicodeStr;
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+ md4.addData(temp.replace(QRegExp("\\s"), QString("")).toUtf8());
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+ }
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+ };
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+
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+ while (getOneLineFromFile(lineStartPos, fileLength,line)) {
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+
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+ LineFileInfo lineInfo;
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+
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+ lineInfo.lineNums = lineNums;
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+
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+ /* 这种方式读取文件会包含后面的行尾 */
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+ int length = line.length();
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+
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+ if (maxLineSize < length)
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+ {
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+ maxLineSize = length;
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+ }
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+
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+ //如果是头部有标识的格式,则后续不用详细检查每行编码,直接按照头部标识走
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+ Encode::tranStrToUNICODE(code, line.data(), line.count(), lineInfo.unicodeStr);
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+ lineInfo.code = code;
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+
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+ if (lineInfo.unicodeStr.endsWith("\r\r\n"))
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+ {
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+ //这里是一种错误,但确实可能出现
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+ if (length > 3)
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+ {
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+ /*if (mode == 0)
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+ {
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+ md4.addData(lineInfo.unicodeStr.trimmed().toUtf8());
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+ }
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+ else if (mode == 1)
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+ {
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+ md4.addData(lineInfo.unicodeStr.left(lineInfo.unicodeStr.length() - 3).toUtf8());
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+ }*/
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+ work(lineInfo, 3);
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+ }
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+ else
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+ {
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+ //空白行
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+ lineInfo.isLcsExist = false;
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+ lineInfo.isEmptyLine = true;
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+ }
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+ lineInfo.lineEndFormat = RC_LINE_FORM::DOS_LINE;
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+ }
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+ else if (lineInfo.unicodeStr.endsWith("\r\n"))
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+ {
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+ if (length > 2)
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+ {
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+ /*if (mode == 0)
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+ {
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+ md4.addData(lineInfo.unicodeStr.trimmed().toUtf8());
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+ }
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+ else if(mode == 1)
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+ {
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+ md4.addData(lineInfo.unicodeStr.left(lineInfo.unicodeStr.length() - 2).toUtf8());
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+ }*/
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+ work(lineInfo, 2);
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+ }
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+ else
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+ {
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+ //空白行
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+ lineInfo.isLcsExist = false;
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+ lineInfo.isEmptyLine = true;
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+ }
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+ lineInfo.lineEndFormat = RC_LINE_FORM::DOS_LINE;
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+
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+ }
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+ else if (lineInfo.unicodeStr.endsWith("\n"))
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+ {
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+ if (length > 1)
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+ {
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+ /*if (mode == 0)
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+ {
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+ md4.addData(lineInfo.unicodeStr.trimmed().toUtf8());
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+ }
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+ else if (mode == 1)
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+ {
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+ md4.addData(lineInfo.unicodeStr.left(lineInfo.unicodeStr.length() - 1).toUtf8());
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+ }*/
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+ work(lineInfo, 1);
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+ }
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+ else
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+ {
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+ lineInfo.isLcsExist = false;
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+
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+ lineInfo.isEmptyLine = true;
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+ }
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+ lineInfo.lineEndFormat = RC_LINE_FORM::UNIX_LINE;
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+
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+ }
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+ else if (lineInfo.unicodeStr.endsWith("\r"))
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+ {
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+ if (length > 1)
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+ {
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+ /* if (mode == 0)
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+ {
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+ md4.addData(lineInfo.unicodeStr.trimmed().toUtf8());
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+ }
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+ else if (mode == 1)
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+ {
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+ md4.addData(lineInfo.unicodeStr.left(lineInfo.unicodeStr.length() - 1).toUtf8());
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+ }*/
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+ work(lineInfo, 1);
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+ }
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+ else
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+ {
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+ lineInfo.isLcsExist = false;
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+
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+ lineInfo.isEmptyLine = true;
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+ }
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+ lineInfo.lineEndFormat = RC_LINE_FORM::MAC_LINE;
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+ }
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+ else
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+ {
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+ if (length > 0)
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+ {
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+ /*if (mode == 0)
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+ {
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+ md4.addData(lineInfo.unicodeStr.trimmed().toUtf8());
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+ }
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+ else if (mode == 1)
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+ {
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+ md4.addData(lineInfo.unicodeStr.toUtf8());
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+ }*/
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+ work(lineInfo, 0);
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+ }
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+ else
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+ {
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+ lineInfo.isLcsExist = false;
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+
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+ lineInfo.isEmptyLine = true;
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+
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+ }
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+ lineInfo.lineEndFormat = RC_LINE_FORM::UNKNOWN_LINE;
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+ }
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+
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+ if (lineInfo.isEmptyLine)
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+ {
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+ blankLineInfoVec.append(lineInfo);
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+ }
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+ else
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+ {
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+ lineInfo.md4 = md4.result();
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+ //qDebug() << lineInfo.md4;
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+ md4.reset();
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+ lineInfoVec.append(lineInfo);
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+ }
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+ ++lineNums;
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+ }
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+
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+ return code;
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+}
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+
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+
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+//读取每一行,将空白行和非空白行分开。非空白行取他们的行md4值(不包含尾部的换行符)
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+//返回值:文件扫描出来的字符编码
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+//在对比行的md5值时,忽略了后面的行尾类型。即只对比字符内容,忽略了行尾。
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+//20210802:发现如果是CODE_ID::UNICODE_LE,\r\n变成了\r\0\n\0,读取readLine遇到\n就结束了,而且toUnicode也会变成乱码失败
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+//所以UNICODE_LE需要单独处理。注意UNICODE_BE没有这个问题,因为BE是\0\r\0\n,0在前面就没有这个问题
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+
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+//20210901 发现使用readLine的方式来读取一行不可靠。因为有些文件中一行中间有个\r,这种情况没有识别为多行。readLine是根据\n来识别的。
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+//进而导致中间的\r没有识别为多行,但是在编辑器中却多一行,导致对比错误。还是要自己来识别行。不依赖于readLine
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+
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+//CODE_ID fileCode 事先预判定的编码
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+CODE_ID CmpareMode::readLineFromFile(uchar* m_fileFpr, const int fileLength, const CODE_ID fileCode, QList<LineFileInfo>&lineInfoVec, QList<LineFileInfo>&blankLineInfoVec, int mode, int &maxLineSize)
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+{
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+ QCryptographicHash md4(QCryptographicHash::Md4);
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+
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+ int lineNums = 0;
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+ CODE_ID code = fileCode;
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+ bool isExistGbk = false;
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+ bool isExistUnKownCode = false;
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+ bool isExistUtf8 = false;
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+
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+
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+ int lineStartPos = 0;
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+
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+ //跳过前面的BOM头部。LE不在这里处理,在外面
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+ if (fileCode == CODE_ID::UNICODE_BE || fileCode == CODE_ID::UNICODE_LE)
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+ {
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+ lineStartPos = 2;
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+ }
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+ else if (fileCode == CODE_ID::UTF8_BOM)
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+ {
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+ lineStartPos = 3;
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+ }
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+
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+ //获取一行在文件中
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+ auto getOneLineFromFile = [m_fileFpr](int& startPos, const int fileLength, const CODE_ID fileCode, QByteArray& ret)->bool {
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+
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+ if (startPos < fileLength)
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+ {
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+ ret.clear();
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+
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+ int lineLens = 0;
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+ bool isFindLine = false;
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+
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+ for (int i = startPos; i < fileLength; ++i, ++lineLens)
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+ {
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+ //遇到符号CR
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+ if (m_fileFpr[i] == 0x0D)
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+ {
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+ //后一个是LF,即以CRLF结尾
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+ if ((i + 1 < fileLength) && (m_fileFpr[i+1] == 0x0A))
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+ {
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+ //lineLens需要加2,因为当前这个没有加,而且后面还有一个\n
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|
|
+ ret.append((char*)(m_fileFpr + startPos), lineLens + 2);
|
|
|
+ startPos += lineLens + 2;
|
|
|
+ isFindLine = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ else if ((fileCode == UNICODE_BE)&&((i>0) && m_fileFpr[i-1] == '\0'))
|
|
|
+ {
|
|
|
+ //事先发现就是BE格式,以\0\r\0\n为结尾的
|
|
|
+ if ((i + 2 < fileLength) && (m_fileFpr[i + 1] == 0x0) && (m_fileFpr[i + 2] == 0x0A))
|
|
|
+ {
|
|
|
+ //lineLens需要加3,因为当前这个没有加,而且后面还有一个\0\n
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), lineLens + 3);
|
|
|
+ startPos += lineLens + 3;
|
|
|
+ isFindLine = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ //虽然说是BE格式,但是后面没有以\0\n结尾,而是以\r结尾。这种多半就是错误。直接按\0\r结尾
|
|
|
+ //lineLens需要加1,因为当前这个没有加
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), lineLens + 1);
|
|
|
+ startPos += lineLens + 1;
|
|
|
+ isFindLine = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ //直接以\r结尾了,后面没有\n或者\0\n。符合MAC格式,windows可能编码只有\r,没有\n的错误情况。
|
|
|
+ //lineLens需要加1,因为当前这个没有加
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), lineLens + 1);
|
|
|
+ startPos += lineLens + 1;
|
|
|
+ isFindLine = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else if(m_fileFpr[i] == 0x0A)
|
|
|
+ {
|
|
|
+ //没有先遇到\r,直接遇到\n.20210903发现忘记处理该情况le
|
|
|
+ //lineLens需要加1,因为当前这个没有加
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), lineLens + 1);
|
|
|
+ startPos += lineLens + 1;
|
|
|
+ isFindLine = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //没有找到一行
|
|
|
+ if (!isFindLine)
|
|
|
+ {
|
|
|
+ //最后一行,可能没有带\r\0直接返回
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), fileLength - startPos);
|
|
|
+
|
|
|
+ startPos = fileLength;
|
|
|
+ }
|
|
|
+
|
|
|
+ return true;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ return false;
|
|
|
+ };
|
|
|
+
|
|
|
+ QByteArray line;
|
|
|
+
|
|
|
+ auto work = [mode,&md4](LineFileInfo& lineInfo, const int n) {
|
|
|
+ if (mode == 0)
|
|
|
+ {
|
|
|
+ md4.addData(lineInfo.unicodeStr.trimmed().toUtf8());
|
|
|
+ }
|
|
|
+ else if (mode == 1)
|
|
|
+ {
|
|
|
+ md4.addData(lineInfo.unicodeStr.left(lineInfo.unicodeStr.length() - n).toUtf8());
|
|
|
+ }
|
|
|
+ else if (mode == 2)
|
|
|
+ {
|
|
|
+ QString temp = lineInfo.unicodeStr;
|
|
|
+ md4.addData(temp.replace(QRegExp("\\s"), QString("")).toUtf8());
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ while (getOneLineFromFile(lineStartPos, fileLength, code, line)) {
|
|
|
+
|
|
|
+ LineFileInfo lineInfo;
|
|
|
+
|
|
|
+ lineInfo.lineNums = lineNums;
|
|
|
+
|
|
|
+ /* 这种方式读取文件会包含后面的行尾 */
|
|
|
+ int length = line.length();
|
|
|
+
|
|
|
+ if (maxLineSize < length)
|
|
|
+ {
|
|
|
+ maxLineSize = length;
|
|
|
+ }
|
|
|
+ //外面必须把code先检测好了
|
|
|
+
|
|
|
+ //if (fileCode == CODE_ID::UNICODE_BE /*|| fileCode == CODE_ID::UNICODE_LE */ || fileCode == CODE_ID::UTF8_BOM)
|
|
|
+ if(fileCode != CODE_ID::UNKOWN)
|
|
|
+ {
|
|
|
+ //如果是头部有标识的格式,则后续不用详细检查每行编码,直接按照头部标识走
|
|
|
+ Encode::tranStrToUNICODE(code, line.data(), line.count(), lineInfo.unicodeStr);
|
|
|
+ lineInfo.code = fileCode;
|
|
|
+ }
|
|
|
+ else if(fileCode == CODE_ID::UNKOWN)
|
|
|
+ {
|
|
|
+ /*对于头部没有标识的行,需要每行进行详细检查,比较耗时
|
|
|
+ *对于第一行已经是GBK的编码,标识出所有的确是GBK的行号
|
|
|
+ *严格来说,如果以后要做国际版,不应该只考虑GBK,而是要考虑本地ASNI编码。
|
|
|
+ *对中国而言,本地ASNI编码是GBK,对其它国家,比如日本/韩国而言,这些ASNI是它们本国
|
|
|
+ *对应的本地编码。
|
|
|
+ */
|
|
|
+ recognizeTextCode(line, lineInfo, lineInfo.unicodeStr);
|
|
|
+
|
|
|
+ if (CODE_ID::UTF8_NOBOM == lineInfo.code)
|
|
|
+ {
|
|
|
+ isExistUtf8 = true;
|
|
|
+ }
|
|
|
+ else if (CODE_ID::GBK == lineInfo.code)
|
|
|
+ {
|
|
|
+ //如果发现存在GBK,则要以GBK作为字符编码。这里识别gbk是因为显示的时候,需要转化gbk进行显示
|
|
|
+ isExistGbk = true;
|
|
|
+ }
|
|
|
+ else if (CODE_ID::UNKOWN == lineInfo.code)
|
|
|
+ {
|
|
|
+ isExistUnKownCode = true;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ if (lineInfo.unicodeStr.endsWith("\r\r\n"))
|
|
|
+ {
|
|
|
+ //这里是一种错误,但确实可能出现
|
|
|
+ if (length > 3)
|
|
|
+ {
|
|
|
+ work(lineInfo,3);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ //空白行
|
|
|
+ lineInfo.isLcsExist = false;
|
|
|
+ lineInfo.isEmptyLine = true;
|
|
|
+ }
|
|
|
+ lineInfo.lineEndFormat = RC_LINE_FORM::DOS_LINE;
|
|
|
+ }
|
|
|
+ else if (lineInfo.unicodeStr.endsWith("\r\n"))
|
|
|
+ {
|
|
|
+ if (length > 2)
|
|
|
+ {
|
|
|
+
|
|
|
+ work(lineInfo, 2);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ //空白行
|
|
|
+ lineInfo.isLcsExist = false;
|
|
|
+ lineInfo.isEmptyLine = true;
|
|
|
+ }
|
|
|
+ lineInfo.lineEndFormat = RC_LINE_FORM::DOS_LINE;
|
|
|
+
|
|
|
+ }
|
|
|
+ else if (lineInfo.unicodeStr.endsWith("\n"))
|
|
|
+ {
|
|
|
+ if (length > 1)
|
|
|
+ {
|
|
|
+
|
|
|
+ work(lineInfo, 1);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ lineInfo.isLcsExist = false;
|
|
|
+
|
|
|
+ lineInfo.isEmptyLine = true;
|
|
|
+ }
|
|
|
+ lineInfo.lineEndFormat = RC_LINE_FORM::UNIX_LINE;
|
|
|
+
|
|
|
+ }
|
|
|
+ else if (lineInfo.unicodeStr.endsWith("\r"))
|
|
|
+ {
|
|
|
+ if (length > 1)
|
|
|
+ {
|
|
|
+ work(lineInfo, 1);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ lineInfo.isLcsExist = false;
|
|
|
+
|
|
|
+ lineInfo.isEmptyLine = true;
|
|
|
+ }
|
|
|
+ lineInfo.lineEndFormat = RC_LINE_FORM::MAC_LINE;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ if (length > 0)
|
|
|
+ {
|
|
|
+ work(lineInfo, 0);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ lineInfo.isLcsExist = false;
|
|
|
+
|
|
|
+ lineInfo.isEmptyLine = true;
|
|
|
+
|
|
|
+ }
|
|
|
+ lineInfo.lineEndFormat = RC_LINE_FORM::UNKNOWN_LINE;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (lineInfo.isEmptyLine)
|
|
|
+ {
|
|
|
+ blankLineInfoVec.append(lineInfo);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ lineInfo.md4 = md4.result();
|
|
|
+ md4.reset();
|
|
|
+ lineInfoVec.append(lineInfo);
|
|
|
+ }
|
|
|
+ ++lineNums;
|
|
|
+ }
|
|
|
+
|
|
|
+ //如果外部指定了格式,则直接返回外部格式
|
|
|
+ if (fileCode != CODE_ID::UNKOWN)
|
|
|
+ {
|
|
|
+ return fileCode;
|
|
|
+ }
|
|
|
+
|
|
|
+ return judgeFinalTextCode(code, isExistUnKownCode, isExistGbk, isExistUtf8);
|
|
|
+}
|
|
|
+
|
|
|
+CODE_ID CmpareMode::judgeFinalTextCode(CODE_ID code, bool isExistUnKownCode, bool isExistGbk, bool isExistUtf8)
|
|
|
+{
|
|
|
+ //如果是三种有明确标识的字符编码,则严格按照标识的逻辑去读取。哪怕里面存在错误编码,也只能按照头部标识为准
|
|
|
+ if (CODE_ID::UNICODE_LE == code || CODE_ID::UNICODE_BE == code || CODE_ID::UTF8_BOM == code || code == CODE_ID::GBK)
|
|
|
+ {
|
|
|
+ return code;
|
|
|
+ }
|
|
|
+
|
|
|
+ //剩下的是在文件头没有严格标识编码的文件
|
|
|
+ //存在不能识别的编码,则应该是ASNI,需要用户指定编码
|
|
|
+ if (isExistUnKownCode)
|
|
|
+ {
|
|
|
+ return CODE_ID::UNKOWN;
|
|
|
+ }
|
|
|
+ if (isExistGbk)
|
|
|
+ {
|
|
|
+ //如果没有错误码,而且发现gbk,则是gbk编码
|
|
|
+ return CODE_ID::GBK;
|
|
|
+ }
|
|
|
+ //如果不存在错误和gbk,就是纯粹的ut8_nobom
|
|
|
+ if (isExistUtf8)
|
|
|
+ {
|
|
|
+ return CODE_ID::UTF8_NOBOM;
|
|
|
+ }
|
|
|
+
|
|
|
+ return code;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+//读取用于纯输出,不做比较。bool &isMaybeHexFile 是否是hex文件,不一定准确,做一个推测
|
|
|
+// int& charsNums 输出字符个数
|
|
|
+CODE_ID CmpareMode::readLineFromFile(uchar* m_fileFpr, const int fileLength, const CODE_ID fileCode, QList<LineFileInfo>&lineInfoVec, int& maxLineSize, int& charsNums, bool &isMaybeHexFile)
|
|
|
+{
|
|
|
+ int lineNums = 0;
|
|
|
+ CODE_ID code = fileCode;
|
|
|
+ bool isExistGbk = false;
|
|
|
+ bool isExistUnKownCode = false;
|
|
|
+ bool isExistUtf8 = false;
|
|
|
+ int lineStartPos = 0;
|
|
|
+ int errorCodeLines = 0;
|
|
|
+ charsNums = 0;
|
|
|
+
|
|
|
+ if (fileCode == CODE_ID::UNICODE_BE || fileCode == CODE_ID::UNICODE_LE)
|
|
|
+ {
|
|
|
+ lineStartPos = 2;
|
|
|
+ }
|
|
|
+ else if (fileCode == CODE_ID::UTF8_BOM)
|
|
|
+ {
|
|
|
+ lineStartPos = 3;
|
|
|
+ }
|
|
|
+
|
|
|
+ //获取一行在文件中
|
|
|
+ auto getOneLineFromFile = [m_fileFpr](int& startPos, const int fileLength, const CODE_ID fileCode, QByteArray& ret)->bool {
|
|
|
+
|
|
|
+ if (startPos < fileLength)
|
|
|
+ {
|
|
|
+ ret.clear();
|
|
|
+
|
|
|
+ int lineLens = 0;
|
|
|
+ bool isFindLine = false;
|
|
|
+
|
|
|
+ for (int i = startPos; i < fileLength; ++i, ++lineLens)
|
|
|
+ {
|
|
|
+ //遇到符号CR
|
|
|
+ if (m_fileFpr[i] == 0x0D)
|
|
|
+ {
|
|
|
+ //后一个是LF,即以CRLF结尾
|
|
|
+ if ((i + 1 < fileLength) && (m_fileFpr[i + 1] == 0x0A))
|
|
|
+ {
|
|
|
+ //lineLens需要加2,因为当前这个没有加,而且后面还有一个\n
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), lineLens + 2);
|
|
|
+ startPos += lineLens + 2;
|
|
|
+ isFindLine = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ else if ((fileCode == UNICODE_BE) && ((i > 0) && m_fileFpr[i - 1] == '\0'))
|
|
|
+ {
|
|
|
+ //事先发现就是BE格式,以\0\r\0\n为结尾的
|
|
|
+ if ((i + 2 < fileLength) && (m_fileFpr[i + 1] == 0x0) && (m_fileFpr[i + 2] == 0x0A))
|
|
|
+ {
|
|
|
+ //lineLens需要加3,因为当前这个没有加,而且后面还有一个\0\n
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), lineLens + 3);
|
|
|
+ startPos += lineLens + 3;
|
|
|
+ isFindLine = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ //虽然说是BE格式,但是后面没有以\0\n结尾,而是以\r结尾。这种多半就是错误。直接按\0\r结尾
|
|
|
+ //lineLens需要加1,因为当前这个没有加
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), lineLens + 1);
|
|
|
+ startPos += lineLens + 1;
|
|
|
+ isFindLine = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ //直接以\r结尾了,后面没有\n或者\0\n。符合MAC格式,windows可能编码只有\r,没有\n的错误情况。
|
|
|
+ //lineLens需要加1,因为当前这个没有加
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), lineLens + 1);
|
|
|
+ startPos += lineLens + 1;
|
|
|
+ isFindLine = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else if (m_fileFpr[i] == 0x0A)
|
|
|
+ {
|
|
|
+ //没有先遇到\r,直接遇到\n.20210903发现忘记处理该情况le
|
|
|
+ //lineLens需要加1,因为当前这个没有加
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), lineLens + 1);
|
|
|
+ startPos += lineLens + 1;
|
|
|
+ isFindLine = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //没有找到一行
|
|
|
+ if (!isFindLine)
|
|
|
+ {
|
|
|
+ //最后一行,可能没有带\r\0直接返回
|
|
|
+ ret.append((char*)(m_fileFpr + startPos), fileLength - startPos);
|
|
|
+
|
|
|
+ startPos = fileLength;
|
|
|
+ }
|
|
|
+
|
|
|
+ return true;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ return false;
|
|
|
+ };
|
|
|
+
|
|
|
+ QByteArray line;
|
|
|
+
|
|
|
+
|
|
|
+ while (getOneLineFromFile(lineStartPos, fileLength, code, line)) {
|
|
|
+
|
|
|
+ LineFileInfo lineInfo;
|
|
|
+
|
|
|
+ lineInfo.lineNums = lineNums;
|
|
|
+
|
|
|
+ /* 这种方式读取文件会包含后面的行尾 */
|
|
|
+ int length = line.length();
|
|
|
+
|
|
|
+ if (maxLineSize < length)
|
|
|
+ {
|
|
|
+ maxLineSize = length;
|
|
|
+ }
|
|
|
+
|
|
|
+ //外面必须把code先检测好了
|
|
|
+
|
|
|
+ //if (fileCode == CODE_ID::UNICODE_BE /*|| fileCode == CODE_ID::UNICODE_LE */ || fileCode == CODE_ID::UTF8_BOM)
|
|
|
+ if(fileCode != CODE_ID::UNKOWN)
|
|
|
+ {
|
|
|
+ //如果是头部有标识的格式,则后续不用详细检查每行编码,直接按照头部标识走
|
|
|
+ Encode::tranStrToUNICODE(code, line.data(), line.count(), lineInfo.unicodeStr);
|
|
|
+ lineInfo.code = fileCode;
|
|
|
+ }
|
|
|
+ else if (fileCode == CODE_ID::UNKOWN)
|
|
|
+ {
|
|
|
+ /*对于头部没有标识的行,需要每行进行详细检查,比较耗时
|
|
|
+ *对于第一行已经是GBK的编码,标识出所有的确是GBK的行号
|
|
|
+ *严格来说,如果以后要做国际版,不应该只考虑GBK,而是要考虑本地ASNI编码。
|
|
|
+ *对中国而言,本地ASNI编码是GBK,对其它国家,比如日本/韩国而言,这些ASNI是它们本国
|
|
|
+ *对应的本地编码。
|
|
|
+ */
|
|
|
+ recognizeTextCode(line, lineInfo, lineInfo.unicodeStr);
|
|
|
+
|
|
|
+ if (CODE_ID::UTF8_NOBOM == lineInfo.code)
|
|
|
+ {
|
|
|
+ isExistUtf8 = true;
|
|
|
+ }
|
|
|
+ else if (CODE_ID::GBK == lineInfo.code)
|
|
|
+ {
|
|
|
+ //如果发现存在GBK,则要以GBK作为字符编码。这里识别gbk是因为显示的时候,需要转化gbk进行显示
|
|
|
+ isExistGbk = true;
|
|
|
+ }
|
|
|
+ else if (CODE_ID::UNKOWN == lineInfo.code)
|
|
|
+ {
|
|
|
+ isExistUnKownCode = true;
|
|
|
+
|
|
|
+ //增加错误行的计数
|
|
|
+ errorCodeLines++;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ if (lineInfo.unicodeStr.endsWith("\r\r\n"))
|
|
|
+ {
|
|
|
+ //这里是一种错误,但确实可能出现
|
|
|
+ if (length > 3)
|
|
|
+ {
|
|
|
+
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ //空白行
|
|
|
+ lineInfo.isLcsExist = false;
|
|
|
+ lineInfo.isEmptyLine = true;
|
|
|
+ }
|
|
|
+ lineInfo.lineEndFormat = RC_LINE_FORM::DOS_LINE;
|
|
|
+ }
|
|
|
+ else if (lineInfo.unicodeStr.endsWith("\r\n"))
|
|
|
+ {
|
|
|
+ if (length > 2)
|
|
|
+ {
|
|
|
+
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ //空白行
|
|
|
+ lineInfo.isLcsExist = false;
|
|
|
+ lineInfo.isEmptyLine = true;
|
|
|
+ }
|
|
|
+ lineInfo.lineEndFormat = RC_LINE_FORM::DOS_LINE;
|
|
|
+
|
|
|
+ }
|
|
|
+ else if (lineInfo.unicodeStr.endsWith("\n"))
|
|
|
+ {
|
|
|
+ if (length > 1)
|
|
|
+ {
|
|
|
+
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ lineInfo.isLcsExist = false;
|
|
|
+
|
|
|
+ lineInfo.isEmptyLine = true;
|
|
|
+ }
|
|
|
+ lineInfo.lineEndFormat = RC_LINE_FORM::UNIX_LINE;
|
|
|
+
|
|
|
+ }
|
|
|
+ else if (lineInfo.unicodeStr.endsWith("\r"))
|
|
|
+ {
|
|
|
+ if (length > 1)
|
|
|
+ {
|
|
|
+
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ lineInfo.isLcsExist = false;
|
|
|
+
|
|
|
+ lineInfo.isEmptyLine = true;
|
|
|
+ }
|
|
|
+ lineInfo.lineEndFormat = RC_LINE_FORM::MAC_LINE;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ if (length > 0)
|
|
|
+ {
|
|
|
+
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ lineInfo.isLcsExist = false;
|
|
|
+
|
|
|
+ lineInfo.isEmptyLine = true;
|
|
|
+
|
|
|
+ }
|
|
|
+ lineInfo.lineEndFormat = RC_LINE_FORM::UNKNOWN_LINE;
|
|
|
+ }
|
|
|
+
|
|
|
+ lineInfoVec.append(lineInfo);
|
|
|
+
|
|
|
+ charsNums += lineInfo.unicodeStr.size();
|
|
|
+ ++lineNums;
|
|
|
+ }
|
|
|
+
|
|
|
+ //如果超过一半的行都是错误的,则考虑为hex文件。
|
|
|
+ if (lineNums >= 10 && (errorCodeLines * 100 / lineNums > 50))
|
|
|
+ {
|
|
|
+ isMaybeHexFile = true;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ isMaybeHexFile = false;
|
|
|
+
|
|
|
+ //如果前面三行中含有\0字符,也可能是二进制文件
|
|
|
+ if (lineNums > 3)
|
|
|
+ {
|
|
|
+ for (int i = 0; i < 3; ++i)
|
|
|
+ {
|
|
|
+ if (lineInfoVec.at(i).unicodeStr.contains(QChar('\0')))
|
|
|
+ {
|
|
|
+ isMaybeHexFile = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //如果用户外部强制编码,则直接按改编码返回
|
|
|
+ if (fileCode != CODE_ID::UNKOWN)
|
|
|
+ {
|
|
|
+ return fileCode;
|
|
|
+ }
|
|
|
+
|
|
|
+ return judgeFinalTextCode(code, isExistUnKownCode, isExistGbk, isExistUtf8);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+//扫描文件的字符编码,不输出文件
|
|
|
+CODE_ID CmpareMode::scanFileRealCode(QString filePath)
|
|
|
+{
|
|
|
+ QFile file(filePath);
|
|
|
+ file.open(QIODevice::ReadOnly);
|
|
|
+
|
|
|
+ CODE_ID code = CODE_ID::UNKOWN;
|
|
|
+ int lineNums = 0;
|
|
|
+
|
|
|
+ bool isExistGbk = false;
|
|
|
+ bool isExistUnKownCode = false;
|
|
|
+ bool isExistUtf8 = false;
|
|
|
+
|
|
|
+
|
|
|
+ while (!file.atEnd()) {
|
|
|
+
|
|
|
+ LineFileInfo lineInfo;
|
|
|
+
|
|
|
+ QByteArray line = file.readLine();
|
|
|
+
|
|
|
+ lineInfo.lineNums = lineNums;
|
|
|
+
|
|
|
+ /* 这种方式读取文件会包含后面的行尾 */
|
|
|
+ //int length = line.length();
|
|
|
+
|
|
|
+ //第一行时,检测一下文件编码,返回值也是文件的编码
|
|
|
+ if (0 == lineNums)
|
|
|
+ {
|
|
|
+ recognizeTextCode(line, lineInfo, lineInfo.unicodeStr);
|
|
|
+ code = (CODE_ID)lineInfo.code;
|
|
|
+
|
|
|
+ //已经找到文本的标签,相信标签,之前返回
|
|
|
+ if (code == CODE_ID::UNICODE_BE || code == CODE_ID::UNICODE_LE || code == CODE_ID::UTF8_BOM || code == CODE_ID::GBK)
|
|
|
+ {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ /*对于头部没有标识的行,需要每行进行详细检查,比较耗时
|
|
|
+ *对于第一行已经是GBK的编码,标识出所有的确是GBK的行号
|
|
|
+ *严格来说,如果以后要做国际版,不应该只考虑GBK,而是要考虑本地ASNI编码。
|
|
|
+ *对中国而言,本地ASNI编码是GBK,对其它国家,比如日本/韩国而言,这些ASNI是它们本国
|
|
|
+ *对应的本地编码。
|
|
|
+ */
|
|
|
+ recognizeTextCode(line, lineInfo, lineInfo.unicodeStr);
|
|
|
+
|
|
|
+ if (CODE_ID::UTF8_NOBOM == lineInfo.code)
|
|
|
+ {
|
|
|
+ isExistUtf8 = true;
|
|
|
+ }
|
|
|
+ else if (CODE_ID::GBK == lineInfo.code)
|
|
|
+ {
|
|
|
+ //如果发现存在GBK,则要以GBK作为字符编码。这里识别gbk是因为显示的时候,需要转化gbk进行显示
|
|
|
+ isExistGbk = true;
|
|
|
+ }
|
|
|
+ else if (CODE_ID::UNKOWN == lineInfo.code)
|
|
|
+ {
|
|
|
+ isExistUnKownCode = true;
|
|
|
+ //20220127一旦发现错误编码,或者说不能识别的编码,则直接跳出。
|
|
|
+ //因为肯定是不能识别的编码ASNI
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ ++lineNums;
|
|
|
+
|
|
|
+ if (lineNums >= 1000)
|
|
|
+ {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ file.close();
|
|
|
+
|
|
|
+ return judgeFinalTextCode(code, isExistUnKownCode, isExistGbk, isExistUtf8);
|
|
|
+
|
|
|
+}
|
|
|
+
|
|
|
+//读取文件,并输出
|
|
|
+//bytescharsNums:文件字符个数,不是文件大小
|
|
|
+//20220908 自动判断是否是二进制文件。isHexFile 是输出
|
|
|
+CODE_ID CmpareMode::scanFileOutPut(CODE_ID code, QString filePath, QList<LineFileInfo>& outputLineInfoVec, int &maxLineSize, int& charsNums, bool &isHexFile)
|
|
|
+{
|
|
|
+ QFile* file = new QFile(filePath);
|
|
|
+ file->open(QIODevice::ReadOnly);
|
|
|
+ uchar* m_fileFpr = file->map(0, file->size());
|
|
|
+
|
|
|
+ if (code == UNKOWN)
|
|
|
+ {
|
|
|
+ code = getTextFileEncodeType(m_fileFpr, file->size(), filePath);
|
|
|
+ }
|
|
|
+
|
|
|
+ //UNICODE_LE格式需要单独处理
|
|
|
+ if (code == UNICODE_LE)
|
|
|
+ {
|
|
|
+ readLineFromFileWithUnicodeLe(m_fileFpr, file->size(), outputLineInfoVec, outputLineInfoVec, 0, maxLineSize);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ code = readLineFromFile(m_fileFpr, file->size(), code, outputLineInfoVec, maxLineSize, charsNums, isHexFile);
|
|
|
+ }
|
|
|
+
|
|
|
+ file->unmap(m_fileFpr);
|
|
|
+ file->close();
|
|
|
+ delete file;
|
|
|
+
|
|
|
+ return code;
|
|
|
+}
|