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revert more.c to r25042
svn path=/trunk/; revision=28226
This commit is contained in:
Christoph von Wittich
parent
47bb187225
commit
d076ba3951
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@ -1,139 +1,169 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <unistd.h>
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/* $Id$
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*
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* MORE.C - external command.
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*
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* clone from 4nt more command
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*
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* 26 Sep 1999 - Paolo Pantaleo <paolopan@freemail.it>
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* started
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* Oct 2003 - Timothy Schepens <tischepe at fastmail dot fm>
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* use window size instead of buffer size.
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*/
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#define rdtscll(val) __asm__ __volatile__ ("rdtsc" : "=A" (val))
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#include <windows.h>
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#include <malloc.h>
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#include <tchar.h>
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const int SELECTMODE = 14;
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const int BIGDATA = 10000; // Relying on int = long
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const int MHZ = 2160;
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int *data;
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void SelectionSort(int data[], int left, int right) {
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int i, j;
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for(i = left; i < right; i++) {
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int min = i;
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for(j=i+1; j <= right; j++)
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if(data[j] < data[min]) min = j;
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int temp = data[min];
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data[min] = data[i];
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data[i] = temp;
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}
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DWORD len;
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LPTSTR msg = _T("--- continue ---");
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/*handle for file and console*/
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HANDLE hStdIn;
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HANDLE hStdOut;
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HANDLE hStdErr;
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HANDLE hKeyboard;
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static VOID
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GetScreenSize (PSHORT maxx, PSHORT maxy)
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{
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CONSOLE_SCREEN_BUFFER_INFO csbi;
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GetConsoleScreenBufferInfo (hStdOut, &csbi);
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*maxx = (csbi.srWindow.Right - csbi.srWindow.Left) + 1;
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*maxy = (csbi.srWindow.Bottom - csbi.srWindow.Top) - 4;
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}
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int Partition( int d[], int left, int right)
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{
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int val =d[left];
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int lm = left-1;
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int rm = right+1;
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for(;;) {
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do
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rm--;
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while (d[rm] > val);
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do
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lm++;
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while( d[lm] < val);
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if(lm < rm) {
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int tempr = d[rm];
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d[rm] = d[lm];
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d[lm] = tempr;
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static
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VOID ConOutPuts (LPTSTR szText)
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{
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DWORD dwWritten;
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WriteFile (GetStdHandle (STD_OUTPUT_HANDLE), szText, _tcslen(szText), &dwWritten, NULL);
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WriteFile (GetStdHandle (STD_OUTPUT_HANDLE), "\n", 1, &dwWritten, NULL);
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}
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static VOID
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ConInKey (VOID)
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{
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INPUT_RECORD ir;
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DWORD dwRead;
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do
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{
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ReadConsoleInput (hKeyboard, &ir, 1, &dwRead);
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if ((ir.EventType == KEY_EVENT) &&
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(ir.Event.KeyEvent.bKeyDown == TRUE))
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return;
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}
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while (TRUE);
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}
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static VOID
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WaitForKey (VOID)
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{
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DWORD dwWritten;
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WriteFile (hStdErr,msg , len, &dwWritten, NULL);
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ConInKey();
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WriteFile (hStdErr, _T("\n"), 1, &dwWritten, NULL);
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// FlushConsoleInputBuffer (hConsoleIn);
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}
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//INT CommandMore (LPTSTR cmd, LPTSTR param)
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int main (int argc, char **argv)
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{
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SHORT maxx,maxy;
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SHORT line_count=0,ch_count=0;
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DWORD i, last;
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HANDLE hFile = INVALID_HANDLE_VALUE;
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TCHAR szFullPath[MAX_PATH];
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/*reading/writing buffer*/
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TCHAR *buff;
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/*bytes written by WriteFile and ReadFile*/
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DWORD dwRead,dwWritten;
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/*ReadFile() return value*/
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BOOL bRet;
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len = _tcslen (msg);
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hStdIn = GetStdHandle(STD_INPUT_HANDLE);
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hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
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hStdErr = GetStdHandle(STD_ERROR_HANDLE);
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if (argc > 1 && _tcsncmp (argv[1], _T("/?"), 2) == 0)
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{
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ConOutPuts(_T("Help text still missing!!"));
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return 0;
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}
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hKeyboard = CreateFile (_T("CONIN$"), GENERIC_READ,
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0,NULL,OPEN_ALWAYS,0,0);
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GetScreenSize(&maxx,&maxy);
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buff=malloc(4096);
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FlushConsoleInputBuffer (hKeyboard);
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if(argc > 1)
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{
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GetFullPathName(argv[1], MAX_PATH, szFullPath, NULL);
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hFile = CreateFile (szFullPath, GENERIC_READ,
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0,NULL,OPEN_ALWAYS,0,0);
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}
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do
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{
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if(hFile != INVALID_HANDLE_VALUE)
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{
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bRet = ReadFile(hFile,buff,4096,&dwRead,NULL);
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}
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else
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{
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bRet = ReadFile(hStdIn,buff,4096,&dwRead,NULL);
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}
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for(last=i=0;i<dwRead && bRet;i++)
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{
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ch_count++;
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if(buff[i] == _T('\n') || ch_count == maxx)
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{
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ch_count=0;
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line_count++;
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if (line_count == maxy)
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{
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line_count = 0;
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WriteFile(hStdOut,&buff[last], i-last+1, &dwWritten, NULL);
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last=i+1;
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FlushFileBuffers (hStdOut);
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WaitForKey ();
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}
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}
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else
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return rm;
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}
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}
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if (last<dwRead && bRet)
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WriteFile(hStdOut,&buff[last], dwRead-last, &dwWritten, NULL);
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void Quicksort( int d[], int left, int right)
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{
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if(left < (right-SELECTMODE)) {
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int split_pt = Partition(d,left, right);
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Quicksort(d, left, split_pt);
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Quicksort(d, split_pt+1, right);
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}
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else SelectionSort(d, left, right);
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}
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int main(int argc, char* argv[]) {
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data = (int*)calloc(BIGDATA,4);
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unsigned long int timeStart;
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unsigned long int timeReadLoopStart;
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unsigned long int timeReadLoopEnd;
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unsigned long int timeSortLoopStart;
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unsigned long int timeSortLoopEnd;
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unsigned long int timeWriteLoopStart;
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unsigned long int timeWriteLoopEnd;
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unsigned long int timeEnd;
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FILE *randfile;
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FILE *sortfile;
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int i,j,thisInt,dataSize = 0;
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long sumUnsorted = 0;
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rdtscll(timeStart);
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randfile = (argc < 2) ? stdin : fopen(argv[1],"r");
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sortfile = (argc < 3) ? stdout : fopen(argv[2],"w");
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if (randfile == NULL || sortfile == NULL) {
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fprintf(stderr,"Could not open all files.\n");
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return 1;
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}
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while(dwRead>0 && bRet);
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rdtscll(timeReadLoopStart);
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i = 0;
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while (!feof(randfile)) {
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fscanf(randfile,"%d",&thisInt);
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if (feof(randfile)) { break; }
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data[i] = thisInt;
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sumUnsorted += thisInt;
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//fprintf(stdout,"[%d] Read item: %d\n",i,thisInt);
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i++;
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if (i >= BIGDATA) {
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break;
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}
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}
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fclose(randfile);
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dataSize = i;
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rdtscll(timeReadLoopEnd);
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rdtscll(timeSortLoopStart);
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Quicksort(data, 0, dataSize-1);
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rdtscll(timeSortLoopEnd);
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rdtscll(timeWriteLoopStart);
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int last = -1;
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for(j = 0; j < dataSize; j++) {
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if (data[j] < last) {
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fprintf(stderr,"The data is not in order\n");
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fprintf(stderr,"Noticed the problem at j = %d\n",j);
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fclose(sortfile);
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return 1;
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} else {
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fprintf(sortfile,"%d\n",data[j]);
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}
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}
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fclose(sortfile);
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rdtscll(timeWriteLoopEnd);
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rdtscll(timeEnd);
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fprintf(stdout,"Sorted %d items.\n",dataSize);
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fprintf(stdout,"Open Files : %ldt.\n",(long)timeReadLoopStart - (long)timeStart);
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fprintf(stdout,"Read Data : %ldt.\n",(long)timeReadLoopEnd - (long)timeReadLoopStart);
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fprintf(stdout,"Sort Data : %ldt.\n",(long)timeSortLoopEnd - (long)timeSortLoopStart);
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fprintf(stdout,"Write Data : %ldt.\n",(long)timeWriteLoopEnd - (long)timeWriteLoopStart);
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fprintf(stdout,"Total Time : %ldt.\n",(long)timeEnd - (long)timeStart);
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free (buff);
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CloseHandle (hKeyboard);
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CloseHandle (hFile);
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return 0;
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}
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/* EOF */
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