Get instant Hello World example scripts, batch files and source code for the Windows CMD.EXE shell, Linux bash, HTML code, or a simple Java/C++/PHP program.
Create a starting point for your own editing,
with the free sfk samp command for Windows, Mac OS X and Linux.
sfk sample java|cpp|... [outfile.java|.cpp|...]
print a short example code in a programming language.
supported parameters
sfk create a simple sfk script
sfkbat sfk script embedded in a .bat or .cmd
sfkbash sfk script embedded in a bash script
http automated http access example script
http -bat ... as a windows .bat file
http -bash ... as a linux .sh file
httpdata create a .zip file with webdemo files
for local use with sfk httpserv
cmd create generic windows .cmd or .bat file
bash create generic linux bash script
html simple html page with css and javascript
java create a java class doing text file I/O
javaimg create a java class doing image file I/O
javahex create a hexdump of binary data in java
javagui create a simple java gui application
c create a simple c source code template
cpp same as the c source code template
cppnetlog how to send UDP network text in C++
javanetlog how to send UDP network text in Java
php create command line php code for text I/O
phpimg create php example for image processing
options
-force if output file exists already, overwrite it.
command shortcutsfk batch myscript.bat
does the same as "sfk samp sfkbat myscript.bat"
web referencehttp://stahlworks.com/sfk-samplemore in the SFK Book
the SFK Book contains a 60 page tutorial, including
long sfk script examples with input, output and
detail explanations. type "sfk book" for more.
examplessfk batch foo.bat
creates batch file foo.bat with embedded sfk script.
type "foo.bat" to run the created script. note that
foo.bat must be created in a directory of your PATH,
or in the current directory.
sfk batch foo.bat -force
the same as above, and overwrites an existing file.
sfk batch foo.sh
create a bash script file, with lf only line endings.
can also be used under windows for mingw environments.
sfk samp java foo.java
create a java class foo. if the java JDK is available,
type "javac foo.java" and then "java foo" to run it.
sfk samp phpimg doimg.php
create image processing script that can be run by:
php doimg.php
if php.exe is in your PATH (read remarks in the script).
sfk samp javahex +toclip
copy example for java hexdump creation to the clipboard.
sfk samp http tmp.bat
create an example script for automated web/http access.
sfk samp http -bash tmp.sh
the same, but using bash in a Windows Cygwin environment.
sfk samp c tmp.c
create an instant c program with some helper functions
for quick and easy writing of a small c project.
compile by: gcc tmp.c or g++ tmp.c or cl tmp.csfk samp cpp tmp.cpp
same as the 'c' code example.
the samples produced are: sfk samp sfk
sfk select testfiles .txt .hpp .cpp
// find words supplied by user.
// note that %1 is the same as $1.
+find
%1 %2 %3 $4 $5 $6
// process files containing hits
+run -quiet "sfk echo \"Found hit in: [green]$file[def]\"" -yes
// run the script by:
// sfk script "thisfile" pattern1 [pattern2 ...]
sfk samp sfkbat
@echo off
sfk script "%~f0" -from begin %*
rem %~f0 is the absolute batch file name.
GOTO xend
sfk label begin -var
// default batch, with some variable support.
// for a full file backup example use:
// sfk batch -full myfile.bat
+if "%1 = " begin
+tell "[green]usage:[def]"
+tell " #(sys.ownscript.name) copy [-yes]"
+stop -all
+endif
+setvar cmd="%1"
+setvar yes="%2"
+if "#(cmd) = copy" begin
+call docopy
+stop
+endif
+tell "unknown command: #(cmd)"
+end
sfk label docopy
+copy -checkdirs
mydir mydir2
-dir core doc db
-subdir !\tmp !\save
-file !.tmp
#(yes)
+end
:xend
sfk samp sfkbash
#!/bin/bash
sfk script "$0" -from begin $@
exit
function skip_block
{
sfk label begin -var -upat2
// default batch, with unified windows/linux syntax (-upat2).
// for a full file backup example use:
// sfk batch -full myfile.sh
+if "%1 = " begin
+tell "[green]usage:[def]"
+tell " #(sys.ownscript.name) copy [-yes]"
+stop -all
+endif
+setvar cmd="%1"
+setvar yes="%2"
+if "#(cmd) = copy" begin
+call docopy
+stop
+endif
+tell "unknown command: #(cmd)"
+end
sfk label docopy
+copy -checkdirs
mydir mydir2
-dir core doc db
-subdir :\tmp :\save
-file :.tmp
#(yes)
+end
}
sfk samp http
@echo off
sfk script "%~f0" -from begin %*
rem "%~f0" is the absolute batch file name.
GOTO xend
sfk label begin -var
// the -var above enables variables everywhere.
+setvar "baseurl=http://stahlworks.com/webdemo"
+web "#(baseurl)/contents.xml"
+xex "_<category>**<id>*</id>**<name>*<
_[part4] [part8]\n_"
+perline "call listCategory #text" -yes
+end
sfk label listCategory
+echo "[green]=== List of %2: ===[def]"
+echo -spat "[yellow]Name Price[def]"
+then web "#(baseurl)/product_list_%1.xml"
// +xmlform +stop -all
+xex "=<row>**<name>*<**<price>*<
=[part4]\t[part8] \x24\n="
+filter -upat -stabform "#(-12col1) #col2"
+end
rem a longer example with input, output and detail
rem explanations is available in the SFK Book.
:xend
sfk samp java
import java.io.*;
public class fileio
{
static void log(String s) { System.out.println("main: "+s); }
public static void main(String args[]) throws Throwable
{
if (args.length < 2)
{ log("supply in- and output filename."); return; }
// copy or convert text file
BufferedReader rin = new BufferedReader(
new InputStreamReader(
new FileInputStream(args[0]), "ISO-8859-1"
// or US-ASCII,UTF-8,UTF-16BE,UTF-16LE,UTF-16
));
PrintWriter pout = new PrintWriter(
new OutputStreamWriter(
new FileOutputStream(args[1]), "ISO-8859-1"
));
while (true) {
String sline = rin.readLine();
if (sline == null) break; // EOD
log("copying line: "+sline);
pout.println(sline);
}
pout.close();
rin.close();
}
};
sfk samp cpp
// simple c source template 1.0 for instant coding, free for any use.
// beware that the simplified semantics may not fit into larger projects.
#ifdef _WIN32
#include <windows.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdint.h>
#include <sys/stat.h>
#ifndef _WIN32
#include <unistd.h>
#include <sys/time.h>
#endif
// sfk quick types
typedef unsigned char uchar;
typedef unsigned short ushort;
typedef unsigned int uint;
typedef const char cchar;
#ifndef __cplusplus
typedef unsigned char bool;
#endif
#ifdef _WIN32
typedef __int64 num;
typedef unsigned __int64 unum;
#else
typedef long long num;
typedef unsigned long long unum;
#endif
// print error message with variable parameters.
int perr(const char *pszFormat, ...) {
va_list argList;
va_start(argList, pszFormat);
char szBuf[1024];
vsprintf(szBuf, pszFormat, argList);
fprintf(stderr, "error: %s", szBuf);
return 0;
}
int merr(const char *pszWhere) {
fprintf(stderr, "out of memory at %s", pszWhere);
return 0;
}
char *myvtext(const char *pszFormat, ...) {
static char szBuf[4096];
va_list argList;
va_start(argList, pszFormat);
vsnprintf(szBuf, sizeof(szBuf)-10, pszFormat, argList);
szBuf[sizeof(szBuf)-10] = '\0';
return szBuf;
}
char *numtoa(num n) {
static char szBuf[100];
#ifdef _WIN32
sprintf(szBuf, "%I64d", n);
#else
sprintf(szBuf, "%lld", n);
#endif
return szBuf;
}
num atonum(char *psz) {
#ifdef _WIN32
return _atoi64(psz);
#else
return atoll(psz);
#endif
}
num currentTime() {
#ifdef _WIN32
return (num)GetTickCount();
#else
struct timeval tv;
gettimeofday(&tv, NULL);
return ((num)tv.tv_sec) * 1000 + ((num)tv.tv_usec) / 1000;
#endif
}
void doSleep(int nmsec) {
#ifdef _WIN32
Sleep(nmsec);
#else
// sleep(1);
// const timespec ts = { nmsec / 1000, nmsec % 1000 * 1000000 };
// nanosleep(&ts, NULL);
usleep(nmsec*1000);
#endif
}
int mystricmp(char *psz1, cchar *psz2) {
while (*psz1 && *psz2 && tolower(*psz1) == tolower(*psz2))
{ psz1++; psz2++; }
return tolower(*psz1) - tolower(*psz2);
}
int mystrnicmp(char *psz1, cchar *psz2, int nLen) {
int i=0;
for (i=0; i<nLen && psz1[i] && psz2[i]; i++)
if (tolower(psz1[i]) != tolower(psz2[i]))
return tolower(psz1[i]) - tolower(psz2[i]);
if (i >= nLen) return 0;
return tolower(psz1[i]) - tolower(psz2[i]);
}
bool strBegins(char *pszStr, cchar *pszPat)
{ return strncmp(pszStr, pszPat, strlen(pszPat)) ? 0 : 1; }
bool striBegins(char *pszStr, cchar *pszPat)
{ return mystrnicmp(pszStr, pszPat, strlen(pszPat)) ? 0 : 1; }
bool strEnds(char *pszStr, cchar *pszPat) {
int nhay = strlen(pszStr);
int npat = strlen(pszPat);
if (nhay < npat) return 0;
return strcmp(pszStr+nhay-npat, pszPat) ? 0 : 1;
}
bool striEnds(char *pszStr, cchar *pszPat) {
int nhay = strlen(pszStr);
int npat = strlen(pszPat);
if (nhay < npat) return 0;
return mystricmp(pszStr+nhay-npat, pszPat) ? 0 : 1;
}
char *mystrstri(char *phay, cchar *ppat) {
int i=0,j=0,ncmp=0,ndiff=0;
int llen = (int)strlen(phay);
int slen = (int)strlen(ppat);
ncmp = (llen-slen)+1;
if (ncmp < 0)
return 0;
for (j=0; j<ncmp; ++j) {
ndiff = 0;
for (i=0; (i<slen) && !ndiff; ++i)
ndiff = tolower(phay[j+i]) - tolower(ppat[i]);
if (!ndiff)
return (char *)phay+j;
}
return 0;
}
uchar *memFind(uchar *pNeedle, num nNeedleSize, uchar *pHayStack, num nHaySize) {
uchar *pCur = pHayStack;
uchar *pMax = pHayStack + nHaySize - nNeedleSize; // inclusive
uchar c1 = *pNeedle;
while (pCur <= pMax) {
uchar *p1 = pCur;
p1 = (uchar*)memchr(p1, c1, pMax - p1 + 1); // +1: pMax is inclusive
if (!p1 || (p1 > pMax))
return 0;
if ((p1 <= pMax) && !memcmp(p1, pNeedle, nNeedleSize))
return p1; // hit
pCur = p1+1;
}
return 0;
}
// may fail with file sizes > 2 gb in 32 bit builds
num getFileSize(char *pszName) {
struct stat buf;
if (stat(pszName, &buf))
return -1;
return buf.st_size;
}
// loads text and binary
char *loadFile(char *pszFile)
{
num nFileSize=0, nTolerance=10;
char *pOut; FILE *fin;
if ((nFileSize = getFileSize(pszFile)) < 0)
{ perr("file not found: %s", pszFile); return 0; }
if (!(pOut = (char*)malloc(nFileSize+nTolerance+4)))
{ perr("out of memory: %s\n", pszFile); return 0; }
memset(pOut+nFileSize, 0, nTolerance); // added safety
if (!(fin = fopen(pszFile, "rb"))) {
perr("cannot read: %s\n", pszFile);
free(pOut);
return 0;
}
int nRead = fread(pOut, 1, nFileSize, fin);
fclose(fin);
if (nRead != nFileSize) {
perr("cannot read: %s (%d %d)\n", pszFile, nRead, nFileSize);
free(pOut);
return 0;
}
// loadFile guarantees zero termination after buffer:
pOut[nFileSize] = '\0';
return pOut;
}
int saveFile(char *pszName, uchar *pData, int iSize, const char *pszMode)
{
FILE *fout;
if (!(fout = fopen(pszName, pszMode)))
return 9+perr("cannot write: %s\n", pszName);
if (fwrite(pData, 1, iSize, fout) != iSize) {
fclose(fout);
return 10+perr("cannot fully write (disk full?): %s\n", pszName);
}
fclose(fout);
return 0;
}
int existsFile(char *pszName, bool bOrDir) {
struct stat buf;
if (stat(pszName, &buf))
return 0;
if (!bOrDir && (buf.st_mode & 0040000)) // _S_IFDIR
return 0; // is a dir, not a file
return 1;
}
char *dataAsHex(void *pAnyData, int iDataSize) {
static char szBuf[300];
uchar *pSrcCur = (uchar *)pAnyData;
uchar *pSrcMax = pSrcCur + iDataSize;
char *pszDstCur = szBuf;
char *pszDstMax = szBuf+sizeof(szBuf)-30;
while (pSrcCur < pSrcMax && pszDstCur < pszDstMax) {
uchar uc = *pSrcCur++;
sprintf(pszDstCur, "%02X", uc);
pszDstCur += 2;
}
*pszDstCur = '\0';
return szBuf;
}
char *dataAsTrace(void *pAnyData, int iDataSize) {
static char szBuf[300];
if (iDataSize == -1)
iDataSize = strlen((char*)pAnyData);
uchar *pSrcCur = (uchar *)pAnyData;
uchar *pSrcMax = pSrcCur + iDataSize;
char *pszDstCur = szBuf;
char *pszDstMax = szBuf+sizeof(szBuf)-30;
while (pSrcCur < pSrcMax && pszDstCur < pszDstMax) {
uchar uc = *pSrcCur++;
if (isprint((char)uc)) {
*pszDstCur++ = (char)uc;
continue;
}
sprintf(pszDstCur, "{%02X}", uc);
pszDstCur += 4;
}
*pszDstCur = '\0';
return szBuf;
}
// copy text lines from one file into another.
int main(int argc, char *argv[])
{
char *pszInFile=0,*pszOutFile=0;
int iarg = 1;
for (;iarg<argc;iarg++) {
char *parg = argv[iarg];
if (!strcmp(parg,"-?") || !strcmp(parg,"-h")
|| !strcmp(parg,"-help")) {
printf("usage: %s infile outfile\n", argv[0]);
return 0;
}
if (!pszInFile)
{ pszInFile = parg; continue; }
if (!pszOutFile)
{ pszOutFile = parg; continue; }
return 9+perr("unexpected: %s\n", parg);
}
if (!pszOutFile)
return 9+perr("specify input and output filename.\n");
FILE *fin = fopen(pszInFile , "rb");
if (!fin )
return 9+perr("cannot read %s\n" , pszInFile);
FILE *fout = fopen(pszOutFile, "wb");
if (!fout)
return 9+perr("cannot write %s\n", pszOutFile);
char szBuf[1024];
memset(szBuf, 0, sizeof(szBuf));
while (fgets(szBuf, sizeof(szBuf)-10, fin))
{
char *psz = strchr(szBuf, '\r');
if (psz) *psz = '\0'; // strip cr
psz = strchr(szBuf, '\n');
if (psz) *psz = '\0'; // strip lf
printf("line: \"%s\"\n", szBuf);
strcat(szBuf, "\n");
int nlen = strlen(szBuf);
if (fwrite(szBuf, 1, nlen, fout) != nlen)
return 9+perr("failed to fully write %s\n", pszOutFile);
}
fclose(fout);
fclose(fin);
return 0;
}
sfk samp cmd
@rem windows command shell batch example
@echo off
IF "%1"=="" GOTO xerr01
echo "parameter is %1"
GOTO xdone
:xerr01
echo "please supply a parameter."
echo "example: mybat parm123"
GOTO xdone
:xdone
sfk samp bash
#!/bin/bash
function pmsg {
# uses a local variable mystr
local mystr="info: $1"
echo $mystr
}
myparm1="$1 and $2" # no blanks around "="
if [ "$2" = "" ]; then # requires all blanks
pmsg "please supply two parameters."
else
pmsg "you supplied \"$myparm1\"."
# < -lt > -gt <= -le >= -ge == -eq != -ne
i=1
while [ $i -le 5 ]; do # not "$i < 5"
echo counting: $i # quotes are optional
let i+=1 # not "i += 1" or "$i+=1"
done
fi