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* $Id: fardata.c,v 1.6 2004/04/17 11:39:43 andrew_belov Exp $
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* ---------------------------------------------------------------------------
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* This file contains routines dealing with far data segment and CRC.
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#include <dos.h> /* Weird, eh? */
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/* ASR fix 02/05/2003: need that regardless of COLOR_OUTPUT to support -jp
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#define CHUNK_SIZE 512 /* Size of the output block */
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#define CHUNK_THRESHOLD (CHUNK_SIZE-256) /* Safety bound */
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DEBUGHDR(__FILE__) /* Debug information block */
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/* Forward Declaration */
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int vcprintf(int ccode, FMSG *fmt, va_list args);
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/* Checks if the error can have an error code or not */
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static int is_std_error(FMSG *errmsg)
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return(errmsg==M_DISK_FULL||errmsg==M_CANT_DELETE||errmsg==M_CANTOPEN||
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errmsg==M_CANTRENAME||errmsg==M_CANTREAD||errmsg==M_CANT_DELETE||
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errmsg==M_CANT_COPY_TEMP)?1:0;
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/* Makes various cleanup depending on the error message received and quits. */
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int error_proc(FMSG *errmsg, ...)
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/* Check if the message could have a standard error code */
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if(errno!=0&&is_std_error(errmsg))
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#if SFX_LEVEL>=ARJSFXV
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if(quiet_mode==ARJ_SILENT)
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freopen(dev_con, m_w, stdout);
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file_settype(stdout, ARJT_TEXT);
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/* For SFX archives, don't forget to display our logo */
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#if SFX_LEVEL==ARJSFXV
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#elif SFX_LEVEL==ARJSFX
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msg_cprintf(0, M_ARJSFX_BANNER, exe_name);
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msg_cprintf(0, M_PROCESSING_ARCHIVE, archive_name);
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#elif SFX_LEVEL>=ARJSFXV
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fputc(LF, new_stdout);
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/* Format and print the error message */
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va_start(marker, errmsg);
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vcprintf(H_ERR, errmsg, marker);
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tmp_errmsg=malloc_fmsg(errmsg);
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#if SFX_LEVEL>=ARJSFXV
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vfprintf(new_stdout, (FMSG *)tmp_errmsg, marker);
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vprintf(tmp_errmsg, marker);
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free_fmsg(tmp_errmsg);
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#elif SFX_LEVEL>=ARJSFXV
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fputc(LF, new_stdout);
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/* Terminate the execution with a specific errorlevel */
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#if SFX_LEVEL>=ARJSFXV
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/* If there's no errorlevel yet, select errorlevel by message class */
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errorlevel=subclass_errors(errmsg);
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/* If the error was the lack of memory, display final memory statistics to
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if(errorlevel==ARJ_ERL_NO_MEMORY)
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exit(REARJ_ERL_WARNING);
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#elif defined(REGISTER)
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exit(REGISTER_ERL_ERROR);
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#elif SFX_LEVEL>=ARJSFX
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exit(ARJSFX_ERL_ERROR);
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/* A printf() function for far strings */
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int msg_printf(FMSG *fmt, ...)
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storage=malloc_far_str(fmt);
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va_start(marker, fmt);
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result=vfprintf(new_stdout, (FMSG *)storage, marker);
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/* A fprintf() function for far strings */
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int msg_fprintf(FILE *stream, FMSG *fmt, ...)
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storage=malloc_far_str(fmt);
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va_start(marker, fmt);
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result=vfprintf(stream, storage, marker);
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/* A sprintf() function for far strings */
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int msg_sprintf(char *str, FMSG *fmt, ...)
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storage=malloc_far_str(fmt);
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va_start(marker, fmt);
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result=vsprintf(str, storage, marker);
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* A Q&D custom printf() implementation. Derived from:
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* vsprintf.c -- Lars Wirzenius & Linus Torvalds.
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* Wirzenius wrote this portably, Torvalds f*cked it up :-)
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/* Length-limited strlen() */
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static int strnlen(const char FAR *s, int count)
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for(sc=s; *sc!='\0'&&count--; ++sc)
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/* Hex representation of digits */
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static char adigit(unsigned long n, int is_uc)
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return((is_uc?'A':'a')+n);
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/* Q'n'D strtoul() implementation */
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unsigned long simple_strtoul(const FMSG *cp, FMSG **endp, unsigned int base)
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unsigned long result=0, value;
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if((*cp=='x')&&isxdigit(cp[1]))
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while(isxdigit(*cp)&&(value=isdigit(*cp)?
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(islower(*cp)?toupper(*cp):*cp)-'A'+10)<base)
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result=result*base+value;
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/* Convert digits and skip over them */
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static int skip_atoi(FMSG **s)
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i=i*10+*((*s)++)-'0';
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#define ZEROPAD 1 /* pad with zero */
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#define SIGN 2 /* unsigned/signed long */
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#define PLUS 4 /* show plus */
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#define SPACE 8 /* space if plus */
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#define LEFT 16 /* left justified */
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#define SPECIAL 32 /* 0x */
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#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
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#define FAR_STR 128 /* Far strings (Fs) */
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/* Number representation routine */
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static int number(char *istr, long num, int base, int size, int precision, int type)
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char c, sign, tmp[66];
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c=(type&ZEROPAD)?'0':' ';
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__res=((unsigned long)num)%(unsigned long)base;
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num=((unsigned long)num)/(unsigned long)base;
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tmp[i++]=adigit(__res, ucase_dig);
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if(!(type&(ZEROPAD+LEFT)))
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*str++=ucase_dig?'X':'x';
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/* Flushes the output buffer downstream. The buffer gets clobbered. */
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static void flush_cbuf(int ccode, char *text)
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char *n_text, *t_text;
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if(quiet_mode==ARJ_SILENT||(quiet_mode==ARJ_QUIET&&!(ccode&H_FORCE)))
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need_pause=(prompt_for_more&&!yes_on_all_queries&&!print_with_more);
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if(!redirected&&!no_colors)
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textcolor(color_table[ccode&H_COLORMASK].color);
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while((c=*t_text)!='\0')
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#if SFX_LEVEL>=ARJSFXV
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fprintf(new_stdout, strform, n_text);
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fprintf(new_stdout, lf);
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printf(strform, n_text);
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textcolor(color_table[ccode&H_COLORMASK].color);
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printf(strform, n_text);
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if(lines_scrolled>=lines_per_page-1)
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/* Restore the color after implicit recursion to msg_cprintf() */
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textcolor(color_table[ccode&H_COLORMASK].color);
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if(!rc&&(ccode&H_WEAK))
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longjmp(main_proc, 1);
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#if SFX_LEVEL>=ARJSFXV
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fprintf(new_stdout, strform, n_text);
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printf(strform, n_text);
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printf(strform, n_text);
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/* vcprintf() implementation */
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int vcprintf(int ccode, FMSG *fmt, va_list args)
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int flags; /* flags to number() */
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int field_width; /* width of output field */
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int precision; /* min. # of digits for integers; max
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number of chars for from string */
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int qualifier; /* 'h', 'l', or 'L' for integer
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int far_str; /* Far string qualifier */
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char buf[CHUNK_SIZE]; /* Output buffer */
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int ocode; /* Output color code for formatted
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fields (that's what the whole
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routine is about!) */
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ocode=(ccode&H_NFMT)?H_STD:ccode;
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for(p_buf=0; *fmt; ++fmt)
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if(last_fmt&&ccode&H_NFMT)
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flush_cbuf(ocode, buf);
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if(*fmt!='%'||*(fmt+1)=='%')
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if(p_buf>=CHUNK_SIZE-1)
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flush_cbuf(ccode, buf);
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++fmt; /* Skip over the 2nd percent - we've handled
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/* A format symbol is found - flush the buffer if:
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1. It's H_NFMT, so we need to change the brush, OR
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2. CHUNK_THRESHOLD has been exceeded (for numeric) */
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if(ccode&H_NFMT||p_buf>=CHUNK_THRESHOLD)
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flush_cbuf(ccode, buf);
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++fmt; /* This also skips first '%' */
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case '-': flags|=LEFT; goto repeat;
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case '+': flags|=PLUS; goto repeat;
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case ' ': flags|=SPACE; goto repeat;
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case '#': flags|=SPECIAL; goto repeat;
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case '0': flags|=ZEROPAD; goto repeat;
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case 'F': flags|=FAR_STR; goto repeat;
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/* Get field width */
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field_width=skip_atoi((FMSG **)&fmt);
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/* It's the next argument */
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field_width=va_arg(args, int);
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field_width=-field_width;
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/* Get the precision */
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precision=skip_atoi((FMSG **)&fmt);
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/* It's the next argument */
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precision=va_arg(args, int);
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/* Get the conversion qualifier */
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if(*fmt=='h'||*fmt=='l'||*fmt=='L')
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while(--field_width>0)
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buf[p_buf++]=(unsigned char)va_arg(args, int);
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while(--field_width>0)
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s=(char FAR *)va_arg(args, char NEAR *);
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s=va_arg(args, char FAR *);
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len=strnlen(s, precision);
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while(len<field_width--)
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if(p_buf>=CHUNK_SIZE-1)
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flush_cbuf(ocode, buf);
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if(p_buf>=CHUNK_SIZE-1)
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flush_cbuf(ocode, buf);
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while(len<field_width--)
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if(p_buf>=CHUNK_SIZE-1)
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flush_cbuf(ocode, buf);
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field_width=2*sizeof(void *);
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p_buf+=number(buf+p_buf, (unsigned long)va_arg(args, void *), 16,
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field_width, precision, flags);
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ipl=va_arg(args, long *);
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ipi=va_arg(args, int *);
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/* Integer number formats - set up the flags and "break" */
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num=va_arg(args, unsigned long);
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else if(qualifier=='h')
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num=va_arg(args, int); /* num=va_arg(args, short); */
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num=va_arg(args, int); /* num=va_arg(args, unsigned short);*/
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num=va_arg(args, short);
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num=va_arg(args, unsigned short);
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num=va_arg(args, int);
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num=va_arg(args, unsigned int);
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p_buf+=number(buf+p_buf, num, base, field_width, precision, flags);
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flush_cbuf(last_fmt?ocode:ccode, buf);
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#endif /* CUSTOM_PRINTF */
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#if SFX_LEVEL>=ARJSFX||defined(REARJ)
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/* Helper routine for scrprintf() */
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int msg_cprintf(int ccode, FMSG *fmt, ...)
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#ifndef CUSTOM_PRINTF
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#ifndef CUSTOM_PRINTF
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storage=malloc_far_str(fmt);
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va_start(marker, fmt);
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#if defined(CUSTOM_PRINTF)
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result=vcprintf(ccode, fmt, marker);
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#elif SFX_LEVEL>=ARJSFXV
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result=vfprintf(new_stdout, (FMSG *)storage, marker);
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result=vprintf(storage, marker);
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#if defined(FMSG_ST)&&!defined(CUSTOM_PRINTF)
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#if SFX_LEVEL>=ARJSFX&&defined(TILED)
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/* A model-independent movedata() function (it must go to ENVIRON.C) */
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void far_memmove(char FAR *dest, char FAR *src, int length)
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movedata(FP_SEG(src), FP_OFF(src), FP_SEG(dest), FP_OFF(dest), length);
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/* Initializes CRC32 subsystem (only used by main()) */
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/* Returns CRC32 for the given block */
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void crc_for_block(char *block, unsigned int length)
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crc32_for_block(block, length);
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/* Returns CRC32 for the given string */
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void crc_for_string(char *str)
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crc32_for_string(str);
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/* Parse the color table */
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int parse_colors(char *opt)
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textcolor(7); /* HACK */
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for(p=opt; !isdigit(*p); p++)
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for(i=0; color_table[i].arg!='\0'||!(++rc); i++)
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if(color_table[i].arg==tolower(*opt))
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color_table[i].color=(char)c;
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while(*opt!='\0'&&!isdigit(*opt))
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while(*opt!='\0'&&(isdigit(*opt)||!isalpha(*opt)))
added
removed
fardata.c
