init

examples/unidiff.cpp

@@ -0,0 +1,111 @@
+
+#include <dtl/dtl.hpp>
+#include "common.hpp"
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <vector>
+
+#include <time.h>
+#include <sys/stat.h>
+
+using namespace std;
+
+using dtl::Diff;
+using dtl::elemInfo;
+using dtl::uniHunk;
+
+static void showStats (string fp1, string fp2);
+static void unifiedDiff (string fp1, string fp2); 
+
+static void showStats (string fp1, string fp2) 
+{
+    const int    MAX_LENGTH    = 255;
+    char         time_format[] = "%Y-%m-%d %H:%M:%S %z";
+    time_t       rawtime[2];
+    struct tm   *timeinfo[2];
+    struct stat  st[2];
+    
+    if (stat(fp1.c_str(), &st[0]) == -1) {
+        cerr << "argv1 is invalid." << endl;
+        exit(-1);
+    }
+    if (stat(fp2.c_str(), &st[1]) == -1) {
+        cerr << "argv2 is invalid" << endl;
+        exit(-1);
+    }
+    
+    char buf[2][MAX_LENGTH + 1];
+    rawtime[0] = st[0].st_mtime;
+    timeinfo[0] = localtime(&rawtime[0]);
+    strftime(buf[0], MAX_LENGTH, time_format, timeinfo[0]);
+    cout << "--- " << fp1 << '\t' << buf[0] << endl;
+    rawtime[1] = st[1].st_mtime;
+    timeinfo[1] = localtime(&rawtime[1]);
+    strftime(buf[1], MAX_LENGTH, time_format, timeinfo[1]);
+    cout << "+++ " << fp2 << '\t' << buf[1] << endl;
+}
+
+static void unifiedDiff (string fp1, string fp2) 
+{
+    typedef string                 elem;
+    typedef vector< elem >         sequence;
+    typedef pair< elem, elemInfo > sesElem;
+
+    ifstream      Aifs(fp1.c_str());
+    ifstream      Bifs(fp2.c_str());
+    elem          buf;
+    sequence      ALines, BLines;
+    
+    while(getline(Aifs, buf)){
+        ALines.push_back(buf);
+    }
+    while(getline(Bifs, buf)){
+        BLines.push_back(buf);
+    }
+    
+    Diff< elem > diff(ALines, BLines);
+    diff.onHuge();
+    //diff.onUnserious();
+    diff.compose();
+    
+    // type unihunk definition test
+    uniHunk< sesElem > hunk;
+    
+    if (diff.getEditDistance() > 0) {
+        showStats(fp1, fp2);             // show file info
+    }
+    
+    diff.composeUnifiedHunks();
+    diff.printUnifiedFormat();
+}
+
+
+int main(int argc, char *argv[])
+{
+    if (isFewArgs(argc)) {
+        cerr << "Too few arguments." << endl;
+        return -1;
+    }
+    
+    string s1(argv[1]);
+    string s2(argv[2]);
+    bool   fileExist = true;
+    
+    if (!isFileExist(s1)) {
+        cerr << s1 << " is invalid." << endl;
+        fileExist = false;
+    }
+    
+    if (!isFileExist(s2)) {
+        cerr << s2 << " is invalid." << endl;
+        fileExist = false;
+    }
+    
+    if (!fileExist) {
+        return -1;
+    }
+    
+    unifiedDiff(s1, s2);
+    return 0;
+}