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 as a starting point for your own editing, with the free sfk samp command for Windows, Mac OS X and Linux.

• Download the free Swiss File Knife Base from Sourceforge.
• Open the Windows CMD command line, Mac OS X Terminal or Linux shell.
• OS X : type mv sfk-mac-64.exe sfk and chmod +x sfk then ./sfk
• Linux: type mv sfk-linux-64.exe sfk and chmod +x sfk then ./sfk. OS X and Linux syntax may differ, check the help within the tool.

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
   sfkapp       simple command line app using sfklib
   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
   python       a python script for text line I/O

options
   -force    if output file exists already, overwrite it.

command shortcut
   sfk batch myscript.bat
      does the same as "sfk samp sfkbat myscript.bat"

more 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.

examples
   sfk 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.c

   sfk samp cpp tmp.cpp
      same as the 'c' code example.

   sfk samp sfkapp tmp.cpp
      basic c/c++ command line app using sfklib functions
      to load and save data, search strings etc.

 

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 *pOptOutSize=0)
{
   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';
   if (pOptOutSize)
      *pOptOutSize = nFileSize;
   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

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
   sfkapp       simple command line app 
                using sfklib
   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
   python       a python script for text 
                line I/O

options
   -force    if output file exists already, 
             overwrite it.

command shortcut
   sfk batch myscript.bat
      does the same as "sfk samp sfkbat 
      myscript.bat"

more 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.


examples
   sfk 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.c

   sfk samp cpp tmp.cpp
      same as the 'c' code example.

   sfk samp sfkapp tmp.cpp
      basic c/c++ command line app using 
      sfklib functions to load and save
      data, search strings etc.

 

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>**<nam
e>*<**<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 
*pOptOutSize=0)
{
   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'; if
   (pOptOutSize)
      *pOptOutSize = nFileSize;
   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

read more about all sfk functions

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