forked from enlightenment/efl
parent
4544dafe7a
commit
ff2f327692
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@ -1,218 +0,0 @@
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/* SCLIB.C
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*
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* This is an example file that shows how to embed the Small compiler into a
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* program. This program contains the "default" implementation of all
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* functions that the Small compiler calls for I/O.
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*
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* This program also contains a main(), so it compiles, again, to a
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* stand-alone compiler. This is for illustration purposes only
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*
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* What this file does is (in sequence):
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* 1. Declare the NO_MAIN macro, so that the function main() and all
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* "callback" functions that are in SC1.C are not compiled.
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* 2. Declare SC_FUNC and SC_VDEFINE as "static" so that all functions and
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* global variables are "encapsulated" in the object file. This solves
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* the global namespace polution problem.
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* 3. Declare the SC_SKIP_VDECL macro which is needed to avoid variables to
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* be doubly declared when the C files are *not* independently compiled.
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* 4. And, the dirtiest trick of all, include the remaining C files. That is,
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* the entire Small compiler compiles to a single object file (.OBJ in
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* Windows). This is the only way to get rid of the global namespace
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* polution.
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*
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* Note that the interface of the Small compiler is subject to change.
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*
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* Compilation:
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* wcl386 /l=nt sclib.c
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*
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* Copyright (c) ITB CompuPhase, 2000-2003
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* This file may be freely used. No warranties of any kind.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#define NO_MAIN
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#define SC_FUNC static
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#define SC_VDEFINE static
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#define SC_SKIP_VDECL /* skip variable "forward declaration" */
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#include "sc.h"
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#include "scvars.c"
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#include "sc1.c"
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#include "sc2.c"
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#include "sc3.c"
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#include "sc4.c"
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#include "sc5.c"
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#include "sc6.c"
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#include "sc7.c"
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#include "sclist.c"
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#include "scexpand.c"
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int main(int argc, char **argv)
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{
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return sc_compile(argc,argv);
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}
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/* sc_printf
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* Called for general purpose "console" output. This function prints general
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* purpose messages; errors go through sc_error(). The function is modelled
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* after printf().
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*/
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int sc_printf(const char *message,...)
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{
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int ret;
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va_list argptr;
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va_start(argptr,message);
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ret=vprintf(message,argptr);
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va_end(argptr);
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return ret;
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}
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/* sc_error
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* Called for producing error output.
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* number the error number (as documented in the manual)
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* message a string describing the error with embedded %d and %s tokens
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* filename the name of the file currently being parsed
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* firstline the line number at which the expression started on which
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* the error was found, or -1 if there is no "starting line"
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* lastline the line number at which the error was detected
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* argptr a pointer to the first of a series of arguments (for macro
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* "va_arg")
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* Return:
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* If the function returns 0, the parser attempts to continue compilation.
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* On a non-zero return value, the parser aborts.
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*/
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int sc_error(int number,char *message,char *filename,int firstline,int lastline,va_list argptr)
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{
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static char *prefix[3]={ "Error", "Fatal", "Warning" };
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if (number!=0) {
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char *pre;
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pre=prefix[number/100];
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if (firstline>=0)
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printf("%s(%d -- %d) %s [%03d]: ",filename,firstline,lastline,pre,number);
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else
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printf("%s(%d) %s [%03d]: ",filename,lastline,pre,number);
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} /* if */
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vprintf(message,argptr);
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fflush(stdout);
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return 0;
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}
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/* sc_opensrc
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* Opens a source file (or include file) for reading. The "file" does not have
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* to be a physical file, one might compile from memory.
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* filename the name of the "file" to read from
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* Return:
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* The function must return a pointer, which is used as a "magic cookie" to
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* all I/O functions. When failing to open the file for reading, the
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* function must return NULL.
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*/
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void *sc_opensrc(char *filename)
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{
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return fopen(filename,"rt");
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}
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/* sc_closesrc
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* Closes a source file (or include file). The "handle" parameter has the
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* value that sc_opensrc() returned in an earlier call.
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*/
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void sc_closesrc(void *handle)
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{
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assert(handle!=NULL);
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fclose((FILE*)handle);
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}
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/* sc_resetsrc
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* "position" may only hold a pointer that was previously obtained from
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* sc_getpossrc() */
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void sc_resetsrc(void *handle,void *position)
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{
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assert(handle!=NULL);
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fsetpos((FILE*)handle,(fpos_t *)position);
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}
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char *sc_readsrc(void *handle,char *target,int maxchars)
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{
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return fgets(target,maxchars,(FILE*)handle);
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}
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void *sc_getpossrc(void *handle)
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{
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static fpos_t lastpos;
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fgetpos((FILE*)handle,&lastpos);
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return &lastpos;
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}
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int sc_eofsrc(void *handle)
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{
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return feof((FILE*)handle);
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}
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/* should return a pointer, which is used as a "magic cookie" to all I/O
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* functions; return NULL for failure
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*/
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void *sc_openasm(char *filename)
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{
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return fopen(filename,"w+t");
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}
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void sc_closeasm(void *handle, int deletefile)
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{
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fclose((FILE*)handle);
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if (deletefile)
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unlink(outfname);
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}
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void sc_resetasm(void *handle)
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{
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fflush((FILE*)handle);
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fseek((FILE*)handle,0,SEEK_SET);
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}
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int sc_writeasm(void *handle,char *st)
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{
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return fputs(st,(FILE*)handle) >= 0;
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}
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char *sc_readasm(void *handle, char *target, int maxchars)
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{
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return fgets(target,maxchars,(FILE*)handle);
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}
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/* Should return a pointer, which is used as a "magic cookie" to all I/O
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* functions; return NULL for failure.
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*/
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void *sc_openbin(char *filename)
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{
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return fopen(filename,"wb");
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}
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void sc_closebin(void *handle,int deletefile)
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{
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fclose((FILE*)handle);
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if (deletefile)
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unlink(binfname);
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}
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void sc_resetbin(void *handle)
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{
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fflush((FILE*)handle);
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fseek((FILE*)handle,0,SEEK_SET);
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}
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int sc_writebin(void *handle,void *buffer,int size)
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{
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return fwrite(buffer,1,size,(FILE*)handle) == size;
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}
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long sc_lengthbin(void *handle)
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{
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return ftell((FILE*)handle);
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}
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@ -1,450 +0,0 @@
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/* compress.c -- Byte Pair Encoding compression */
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/* Copyright 1996 Philip Gage */
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/* This program appeared in the September 1997 issue of
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* C/C++ Users Journal. The original source code may still
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* be found at the web site of the magazine (www.cuj.com).
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*
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* It has been modified by me (Thiadmer Riemersma) to
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* compress only a section of the input file and to store
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* the compressed output along with the input as "C" strings.
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*
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* Compiling instructions:
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* Borland C++ 16-bit (large memory model is required):
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* bcc -ml scpack.c
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*
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* Watcom C/C++ 32-bit:
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* wcl386 scpack.c
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*
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* GNU C (Linux), 32-bit:
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* gcc scpack.c -o scpack
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*/
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#include <assert.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#if UINT_MAX > 0xFFFFU
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#define MAXSIZE 1024*1024L
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#else
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#define MAXSIZE UINT_MAX /* Input file buffer size */
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#endif
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#define HASHSIZE 8192 /* Hash table size, power of 2 */
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#define THRESHOLD 3 /* Increase for speed, min 3 */
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#define START_TOKEN "#ifdef SCPACK" /* start reading the buffer here */
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#define NAME_TOKEN "#define SCPACK_TABLE"
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#define SEP_TOKEN "#define SCPACK_SEPARATOR"
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#define TERM_TOKEN "#define SCPACK_TERMINATOR"
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#define TEMPFILE "~SCPACK.TMP"
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static char tablename[32+1] = "scpack_table";
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static char separator[16]=",";
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static char terminator[16]="";
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int compress(unsigned char *buffer, unsigned buffersize, unsigned char pairtable[128][2])
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{
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unsigned char *left, *right, *count;
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unsigned char a, b, bestcount;
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unsigned i, j, index, bestindex, code=128;
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/* Dynamically allocate buffers and check for errors */
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left = (unsigned char *)malloc(HASHSIZE);
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right = (unsigned char *)malloc(HASHSIZE);
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count = (unsigned char *)malloc(HASHSIZE);
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if (left==NULL || right==NULL || count==NULL) {
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printf("Error allocating memory\n");
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exit(1);
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}
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/* Check for errors */
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for (i=0; i<buffersize; i++)
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if (buffer[i] > 127) {
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printf("This program works only on text files (7-bit ASCII)\n");
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exit(1);
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}
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memset(pairtable, 0, 128*2*sizeof(char));
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do { /* Replace frequent pairs with bytes 128..255 */
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/* Enter counts of all byte pairs into hash table */
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memset(count,0,HASHSIZE);
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for (i=0; i<buffersize-1; i++) {
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a = buffer[i];
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b = buffer[i+1];
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/* ignore any pair with a '\0' */
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if (a == 0 || b == 0)
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continue;
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index = (a ^ (b << 6)) & (HASHSIZE-1);
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while ((left[index] != a || right[index] != b) &&
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count[index] != 0)
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index = (index + 1) & (HASHSIZE-1);
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left[index] = a;
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right[index] = b;
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if (count[index] < 255)
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count[index] += (unsigned char)1;
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}
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/* Search hash table for most frequent pair */
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bestcount = THRESHOLD - 1;
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for (i=0; i<HASHSIZE; i++) {
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if (count[i] > bestcount) {
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bestcount = count[i];
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bestindex = i;
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}
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}
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/* Compress if enough occurrences of pair */
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if (bestcount >= THRESHOLD) {
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/* Add pair to table using code as index */
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a = pairtable[code-128][0] = left[bestindex];
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b = pairtable[code-128][1] = right[bestindex];
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/* Replace all pair occurrences with unused byte */
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for (i=0, j=0; i<buffersize; i++, j++)
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if (a == buffer[i] && b == buffer[i+1]) {
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buffer[j] = (unsigned char)code;
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++i;
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}
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else
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buffer[j] = buffer[i];
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buffersize = j;
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}
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else
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break;
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} while (++code < 255);
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/* done */
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free(left); free(right); free(count);
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return buffersize; /* return adjusted buffersize */
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}
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static int strmatch(char *str, char *token, int *indent)
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{
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int i = 0;
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/* skip whitespace */
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while (*str==' ' || *str=='\t') {
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str++;
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i++;
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} /* while */
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if (strncmp(str,token,strlen(token))!=0)
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return 0;
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if (indent != NULL)
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*indent = i;
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return 1;
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}
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static void check_if(char *str,int linenr)
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{
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if (strmatch(str,"#if",NULL)) {
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printf("Error: \"#if...\" preprocessor statement should not be in SCPACK section "
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"(line %d)\n", linenr);
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exit(1);
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} /* if */
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}
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static int check_tablename(char *str)
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{
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int i;
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if (strmatch(str,NAME_TOKEN,NULL)) {
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str += strlen(NAME_TOKEN);
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while (*str==' ' || *str=='\t')
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str++;
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for (i=0; i<(sizeof tablename - 1) && *str!='\0' && strchr(" \t\n",*str)==NULL; i++, str++)
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tablename[i] = *str;
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tablename[i] = '\0';
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return 1;
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} /* if */
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return 0;
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}
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static int check_separator(char *str)
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{
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int i;
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if (strmatch(str,SEP_TOKEN,NULL)) {
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str += strlen(SEP_TOKEN);
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while (*str==' ' || *str=='\t')
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str++;
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for (i=0; i<(sizeof separator - 1) && *str!='\0' && strchr(" \t\n",*str)==NULL; i++, str++)
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separator[i] = *str;
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separator[i] = '\0';
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return 1;
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} /* if */
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if (strmatch(str,TERM_TOKEN,NULL)) {
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str += strlen(TERM_TOKEN);
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while (*str==' ' || *str=='\t')
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str++;
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for (i=0; i<(sizeof terminator - 1) && *str!='\0' && strchr(" \t\n",*str)==NULL; i++, str++)
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terminator[i] = *str;
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terminator[i] = '\0';
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return 1;
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} /* if */
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return 0;
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}
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/* readbuffer
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* Reads in the input file and stores all strings in the
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* section between "#ifdef SCPACK" and "#else" in a buffer.
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* Only text that is between double quotes is added to the
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* buffer; the \" escape code is handled. Multiple strings
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* on one line are handled.
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*/
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unsigned readbuffer(FILE *input, unsigned char *buffer)
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{
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char str[256];
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unsigned buffersize;
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int i,linenr;
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linenr=0;
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buffersize=0;
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rewind(input);
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while (!feof(input)) {
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while (fgets(str,sizeof str,input)!=NULL) {
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linenr++;
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check_tablename(str);
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check_separator(str);
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if (strmatch(str,START_TOKEN,NULL))
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break;
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} /* while */
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if (!strmatch(str,START_TOKEN,NULL))
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return buffersize; /* no (more) section found, quit */
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while (fgets(str,sizeof str,input)!=NULL) {
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linenr++;
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check_if(str,linenr);
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if (check_tablename(str))
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printf("Error: table name definition should not be in SCPACK section (line %d)\n", linenr);
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check_separator(str);
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if (strmatch(str,"#else",NULL))
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break; /* done */
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/* add to the buffer only what is between double quotes */
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i=0;
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do {
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while (str[i]!='\0' && str[i]!='"')
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i++;
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if (str[i]=='"') {
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/* we are in a string */
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i++;
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while (str[i]!='\0' && str[i]!='"') {
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/* handle escape sequences */
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if (str[i]=='\\') {
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i++;
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switch (str[i]) {
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case 'a': /* alarm */
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buffer[buffersize++]='\a';
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i++;
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break;
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case 'b': /* backspace */
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buffer[buffersize++]='\b';
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i++;
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break;
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case 'f': /* form feed */
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buffer[buffersize++]='\f';
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i++;
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break;
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case 'n': /* newline */
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buffer[buffersize++]='\n';
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i++;
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break;
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case 'r': /* carriage return */
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buffer[buffersize++]='\n';
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i++;
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break;
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case 't': /* tab */
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buffer[buffersize++]='\t';
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i++;
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break;
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case '\'':
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buffer[buffersize++]='\'';
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i++;
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break;
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case '"':
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buffer[buffersize++]='"';
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i++;
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break;
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default:
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// ??? octal character code escapes and hexadecimal escapes
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// not supported
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printf("Unknown escape sequence '\\%c' on line %d\n",
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str[i], linenr);
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} /* switch */
|
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} else {
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buffer[buffersize++]=str[i++];
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||||
} /* if */
|
||||
} /* while */
|
||||
if (str[i]=='"') {
|
||||
buffer[buffersize++]='\0'; /* terminate each string */
|
||||
i++;
|
||||
} else {
|
||||
printf("Error: unterminated string on line %d\n",linenr);
|
||||
} /* if */
|
||||
} /* if */
|
||||
} while (str[i]!='\0');
|
||||
} /* while - in SCPACK section */
|
||||
/* put in another '\0' to terminate the section */
|
||||
buffer[buffersize++]='\0';
|
||||
} /* while - !feof(input) */
|
||||
return buffersize;
|
||||
}
|
||||
|
||||
static void write_pairtable(FILE *output, unsigned char pairtable[128][2], char *tablename)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* dump the pair table */
|
||||
fprintf(output, "/*-*SCPACK start of pair table, do not change or remove this line */\n");
|
||||
fprintf(output, "unsigned char %s[][2] = {", tablename);
|
||||
for (i=0; i<128 && pairtable[i][0]!=0 && pairtable[i][1]!=0; i++) {
|
||||
if ((i % 16)==0)
|
||||
fprintf(output, "\n ");
|
||||
else
|
||||
fprintf(output, " ");
|
||||
fprintf(output, "{%d,%d}", pairtable[i][0], pairtable[i][1]);
|
||||
/* check if something follows this pair */
|
||||
if (i+1<128 && pairtable[i+1][0]!=0 && pairtable[i+1][1]!=0)
|
||||
fprintf(output, ",");
|
||||
} /* for */
|
||||
fprintf(output, "\n};\n");
|
||||
fprintf(output, "/*-*SCPACK end of pair table, do not change or remove this line */\n");
|
||||
}
|
||||
|
||||
void writefile(FILE *input, FILE *output, unsigned char *buffer, unsigned buffersize, unsigned char pairtable[128][2])
|
||||
{
|
||||
char str[256];
|
||||
int insection, indent, needseparator;
|
||||
unsigned char *bufptr;
|
||||
|
||||
bufptr = buffer;
|
||||
insection = 0;
|
||||
|
||||
rewind(input);
|
||||
while (!feof(input)) {
|
||||
while (fgets(str,sizeof str,input)!=NULL) {
|
||||
fprintf(output,"%s",str);
|
||||
if (check_tablename(str)) {
|
||||
write_pairtable(output, pairtable, tablename);
|
||||
/* strip an existing pair table from the file */
|
||||
if (fgets(str,sizeof str,input)!=NULL) {
|
||||
if (strmatch(str,"/*-*SCPACK",NULL)) {
|
||||
while (fgets(str,sizeof str,input)!=NULL)
|
||||
if (strmatch(str,"/*-*SCPACK",NULL))
|
||||
break;
|
||||
} else {
|
||||
fprintf(output,"%s",str);
|
||||
} /* if */
|
||||
} /* if */
|
||||
} /* if */
|
||||
if (strmatch(str,START_TOKEN,NULL))
|
||||
insection = 1;
|
||||
if (insection && strmatch(str,"#else",NULL))
|
||||
break;
|
||||
} /* while */
|
||||
if (!strmatch(str,"#else",&indent))
|
||||
return; /* no (more) section found, quit */
|
||||
insection=0;
|
||||
|
||||
/* dump the buffer as strings, separated with commas */
|
||||
needseparator = 0;
|
||||
while (*bufptr != '\0') {
|
||||
assert((unsigned)(bufptr-buffer) < buffersize);
|
||||
if (needseparator)
|
||||
fprintf(output, "%s\n",separator);
|
||||
fprintf(output, "%*c\"",indent+2,' ');
|
||||
/* loop over string */
|
||||
while (*bufptr != '\0') {
|
||||
if (*bufptr<' ' || *bufptr >= 128 || *bufptr == '"' || *bufptr == '\\')
|
||||
fprintf(output, "\\%03o", *bufptr);
|
||||
else
|
||||
fprintf(output, "%c", *bufptr);
|
||||
bufptr++;
|
||||
} /* while */
|
||||
fprintf(output, "\"");
|
||||
needseparator = 1;
|
||||
bufptr++; /* skip '\0' */
|
||||
} /* while */
|
||||
fprintf(output, "%s\n",terminator);
|
||||
bufptr++;
|
||||
|
||||
/* skip the input file until the #endif section */
|
||||
while (fgets(str,sizeof str,input)!=NULL) {
|
||||
if (strmatch(str,"#endif",NULL)) {
|
||||
fprintf(output,"%s",str);
|
||||
break; /* done */
|
||||
} /* if */
|
||||
} /* while */
|
||||
} /* while - !feof(input) */
|
||||
}
|
||||
|
||||
static void usage(void)
|
||||
{
|
||||
printf("Usage: scpack <filename> [output file]\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
FILE *in, *out;
|
||||
unsigned char *buffer;
|
||||
unsigned buffersize, orgbuffersize;
|
||||
unsigned char pairtable[128][2];
|
||||
|
||||
if (argc < 2 || argc > 3)
|
||||
usage();
|
||||
if ((in=fopen(argv[1],"rt"))==NULL) {
|
||||
printf("SCPACK: error opening input %s\n",argv[1]);
|
||||
usage();
|
||||
} /* if */
|
||||
if (argc == 2) {
|
||||
if ((out=fopen(TEMPFILE,"wt"))==NULL) {
|
||||
printf("SCPACK: error opening temporary file %s\n",TEMPFILE);
|
||||
usage();
|
||||
} /* if */
|
||||
} else {
|
||||
if ((out=fopen(argv[2],"wt"))==NULL) {
|
||||
printf("SCPACK: error opening output file %s\n",argv[2]);
|
||||
usage();
|
||||
} /* if */
|
||||
} /* if */
|
||||
|
||||
buffer = (unsigned char *)malloc(MAXSIZE);
|
||||
if (buffer == NULL) {
|
||||
printf("SCPACK: error allocating memory\n");
|
||||
return 1;
|
||||
} /* if */
|
||||
/* 1. read the buffer
|
||||
* 2. compress the buffer
|
||||
* 3. copy the file, insert the compressed buffer
|
||||
*/
|
||||
buffersize = readbuffer(in, buffer);
|
||||
orgbuffersize = buffersize;
|
||||
if (buffersize > 0) {
|
||||
buffersize = compress(buffer, buffersize, pairtable);
|
||||
writefile(in, out, buffer, buffersize, pairtable);
|
||||
printf("SCPACK: compression ratio: %ld%% (%d -> %d)\n",
|
||||
100L-(100L*buffersize)/orgbuffersize, orgbuffersize, buffersize);
|
||||
} else {
|
||||
printf("SCPACK: no SCPACK section found, nothing to do\n");
|
||||
} /* if */
|
||||
fclose(out);
|
||||
fclose(in);
|
||||
/* let the new file replace the old file */
|
||||
if (buffersize == 0) {
|
||||
if (argc == 2)
|
||||
unlink(TEMPFILE);
|
||||
else
|
||||
unlink(argv[2]);
|
||||
} else if (argc == 2) {
|
||||
unlink(argv[1]);
|
||||
rename(TEMPFILE,argv[1]);
|
||||
} /* if */
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,29 +0,0 @@
|
|||
#include <process.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
static char filename[] = "scdos.exe";
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
int result;
|
||||
|
||||
/* build a command line to pass on to the "DOS" program */
|
||||
char path[80], *ptr;
|
||||
strcpy(path,argv[0]);
|
||||
ptr=strrchr(path,'\\');
|
||||
if (ptr==NULL)
|
||||
ptr=strchr(path,':');
|
||||
if (ptr==NULL) {
|
||||
strcpy(path,filename);
|
||||
} else {
|
||||
strcpy(ptr+1,filename);
|
||||
} /* if */
|
||||
|
||||
/* launch the DOS version of the tool */
|
||||
result=execv(path,argv);
|
||||
if (result==-1)
|
||||
printf("Error launching '%s'\n",path);
|
||||
return result;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue