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/*##############################################################################
FUNNNELWEB COPYRIGHT
====================
FunnelWeb is a literate-programming macro preprocessor.
The FunnelWeb web is at http://www.ross.net/funnelweb/
Copyright (c) Ross N. Williams 1992. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of Version 2 of the GNU General Public License as
published by the Free Software Foundation (http://www.gnu.org/).
This program is distributed WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See Version 2 of the GNU General Public License for more details.
You should have received a copy of Version 2 of the GNU General Public
License along with this program. If not, you can obtain a copy as follows:
ftp://prep.ai.mit.edu/pub/gnu/COPYING-2.0
or write to:
Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
Section 2a of the license requires that all changes to this file be
recorded prominently in this file. Please record all changes here.
Programmers:
RNW Ross N. Williams (ross@ross.net)
Changes:
07-May-1992 RNW Program prepared for release under GNU GPL V2.
08-May-1999 RNW Added +u option for HTML documentation.
##############################################################################*/
/******************************************************************************/
/* OPTION.C */
/******************************************************************************/
#include <ctype.h>
#include "style.h"
#include "as.h"
#include "data.h"
#include "machin.h"
#include "misc.h"
#include "option.h"
/******************************************************************************/
LOCAL void wl_caret P_((ulong,void (*)(char *)));
LOCAL void wl_caret(n,p_outf)
/* Writes a caret at position n of an otherwise blank line. */
ulong n;
void (*p_outf) P_((char *));
{
as_cold(n<1000,"wl_caret: Argument is out of range.");
while (--n > 0)
(*p_outf)(" ");
(*p_outf)("^\n");
}
/******************************************************************************/
EXPORT void op_ini(p_op)
p_op_t p_op;
{
p_op->op_f_b=FALSE;
strcpy(&p_op->op_f_s[0],"");
p_op->op_j_b=FALSE;
strcpy(&p_op->op_j_s[0],"");
strcpy(&p_op->op_i_s[0],"");
p_op->op_o_b=TRUE;
strcpy(&p_op->op_o_s[0],"");
p_op->op_t_b=FALSE;
strcpy(&p_op->op_t_s[0],"");
p_op->op_u_b=FALSE;
strcpy(&p_op->op_u_s[0],"");
p_op->op_l_b=TRUE;
strcpy(&p_op->op_l_s[0],"");
p_op->op_d_b=FALSE;
p_op->op_c_i=2;
p_op->op_q_b=FALSE;
p_op->op_s_b=FALSE;
p_op->op_s_i=1;
p_op->op_w_b=FALSE;
p_op->op_w_i=80;
p_op->op_x_b=FALSE;
strcpy(&p_op->op_x_s[0],"");
p_op->op_k_b=FALSE;
p_op->op_b1_b=FALSE;
p_op->op_b2_b=FALSE;
p_op->op_b3_b=FALSE;
p_op->op_b4_b=FALSE;
p_op->op_b5_b=FALSE;
p_op->op_b6_b=FALSE;
p_op->op_b7_b=FALSE;
p_op->op_h_b=FALSE;
strcpy(&p_op->op_h_s[0],"menu");
}
/******************************************************************************/
EXPORT bool op_add(p_op,p_cl,p_outf)
p_op_t p_op;
p_cl_t p_cl;
void (*p_outf) P_((char *));
{
op_t op_save; /* Saves *p_op so it can be restored later. */
char *comline = (char *) p_cl; /* Pointer to the command line to be parsed. */
char *p; /* Handy parsing pointer. */
bool seen_error = FALSE; /* TRUE iff one or more errors seen. */
#define ECHO_CL {if (!seen_error)\
{(*p_outf)(comline);(*p_outf)("\n"); seen_error=TRUE;}}
/* Save the parameter option structure so that we can restore it */
/* if an error occurs later on. */
ASSIGN(op_save,*p_op);
/* Check to make sure that the command line is not too long. */
/* This error should really never occur. */
p=comline;
while (*p++ != EOS)
if ((p-comline) > COMLINE_MAX)
{
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("The entire command line is too long.\n");
sprintf(linet1,"The maximum command line length is %u characters.\n",
(unsigned) COMLINE_MAX);
(*p_outf)(linet1);
goto failure;
}
/* Check that the command line contains only printables. */
p=comline;
while (*p != EOS)
{
if (!isascprn(*p))
{
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("Command line contains one or more non-printables.\n");
sprintf(linet1,"The first is at column %u.\n",(unsigned) (1+p-comline));
(*p_outf)(linet1);
goto failure;
}
p++;
}
/* Now parse each option. */
p=comline;
while (TRUE)
{/* This loop processes one command line parameter (option) per iteration. */
char *p_startopt; /* Points to the start of the parameter. */
bool opsign; /* The sign of the current option (+=TRUE). */
bool opsign_active; /* TRUE => (+ or -). FALSE => (=). */
char letter; /* Letter of current option. */
cl_t cl_temp; /* Parameter string of the current option. */
fn_t fn_temp; /* Parameter string of the current option. */
int i; /* Handy int used to feed sscanf. */
/* Skip first parameter or rest of previous parameter after syntax error. */
while ((*p!=' ') && (*p!=EOS)) p++;
/* Skip blanks between parameters. */
while (*p==' ') p++;
/* At this point we are either at the start of a parameter or at EOS. */
/* Finish if we are at the EOS. */
if (*p==EOS) break;
/* p now points to the next parameter (option). Make a note of its start. */
p_startopt=p;
/* This switch statement parses the sign and letter characters. */
switch (*p)
{
case '-': opsign=FALSE; opsign_active=TRUE; p++; goto parse_letter;
case '+': opsign=TRUE; opsign_active=TRUE; p++; goto parse_letter;
case '=': opsign_active=FALSE; p++; goto parse_letter;
parse_letter:
/* We have seen a sign. There should be a following letter. */
letter = *p;
if (!isalpha(letter))
{
ECHO_CL; wl_caret(p-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("Option letter expected here.\n");
continue; /* Skip to the next parameter. */
}
p++;
break;
default: /* If no sign the option is a NAME option and defaults to +F. */
opsign=TRUE; opsign_active=TRUE; letter='F'; break;
} /* End switch */
/* Assert: p points to the parameter string of the option. */
/* Copy the parameter string into the holding variable cl_temp. */
{char *q;
q = &cl_temp[0];
while ((*p!=EOS) && (*p!=' '))
*q++ = *p++;
*q=EOS;
}
/* As COMLINE_MAX can be greater than PATHNAME_MAX, we have to be careful */
/* that the user is not about to blow our filename buffer. */
if (strlen(cl_temp) > PATHNAME_MAX)
{
ECHO_CL; wl_caret(p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("Option parameter string is too long.\n");
sprintf(linet1,"The maximum option parameter length is %u characters.\n",
(unsigned) PATHNAME_MAX);
(*p_outf)(linet1);
continue; /* Skip to next parameter. */
}
/* Now that we know that the parameter is not too big, we can copy it */
/* into a temporary variable of filename type. */
strcpy(&fn_temp[0],&cl_temp[0]);
/* At this point p points to the character following the option that */
/* we have just scanned. This is either a blank or an EOS. */
/* The current option is held in (opsign,opsign_active,letter,fn_temp). */
/* Now we apply the option to the option record. */
switch (toupper(letter))
{
case 'F':
if (opsign_active) p_op->op_f_b=opsign;
strcpy(&p_op->op_f_s[0],&fn_temp[0]);
break;
case 'J':
if (opsign_active) p_op->op_j_b=opsign;
strcpy(&p_op->op_j_s[0],&fn_temp[0]);
break;
case 'I':
strcpy(&p_op->op_i_s[0],&fn_temp[0]);
break;
case 'O':
if (opsign_active) p_op->op_o_b=opsign;
strcpy(&p_op->op_o_s[0],&fn_temp[0]);
break;
case 'T':
if (opsign_active) p_op->op_t_b=opsign;
strcpy(&p_op->op_t_s[0],&fn_temp[0]);
break;
case 'U':
if (opsign_active) p_op->op_u_b=opsign;
strcpy(&p_op->op_u_s[0],&fn_temp[0]);
break;
case 'L':
if (opsign_active) p_op->op_l_b=opsign;
strcpy(&p_op->op_l_s[0],&fn_temp[0]);
break;
case 'D':
if (opsign_active) p_op->op_d_b=opsign;
if (strlen(fn_temp)>0)
{
ECHO_CL; wl_caret(3+p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("The D option does not take an argument.\n");
}
break;
case 'C':
if ((sscanf(&fn_temp[0],"%d",&i) != 1) || (i<0) || (100<i))
{
ECHO_CL; wl_caret(3+p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("Numeric argument to C option invalid. It must\n");
(*p_outf)("be an unsigned decimal integer in the range [0,100].\n");
}
else
p_op->op_c_i=i;
break;
case 'Q':
if (opsign_active) p_op->op_q_b=opsign;
if (strlen(fn_temp)>0)
{
ECHO_CL; wl_caret(3+p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("The Q option does not take an argument.\n");
}
break;
case 'S':
if (opsign_active) p_op->op_s_b=opsign;
if (strlen(fn_temp)==0) break;
if ((sscanf(&fn_temp[0],"%d",&i) != 1) || (i<0) || (100<i))
{
ECHO_CL; wl_caret(2+p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("Numeric argument to S option invalid. It must\n");
(*p_outf)("be an unsigned decimal integer in the range [0,100].\n");
}
else
p_op->op_s_i=i;
break;
case 'W':
if (opsign_active) p_op->op_w_b=opsign;
if (strlen(fn_temp)==0) break;
if ((sscanf(&fn_temp[0],"%d",&i) != 1) || (i<0) || (1000<i))
{
ECHO_CL; wl_caret(2+p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("Error: Numeric argument to W option invalid. It must\n");
(*p_outf)("be an unsigned decimal integer in the range [0,1000].\n");
}
else
p_op->op_w_i=i;
break;
case 'X':
if (opsign_active) p_op->op_x_b=opsign;
strcpy(&p_op->op_x_s[0],&fn_temp[0]);
break;
case 'K':
if (opsign_active) p_op->op_k_b=opsign;
if (strlen(fn_temp)>0)
{
ECHO_CL; wl_caret(3+p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("The K option does not take an argument.\n");
}
break;
case 'H':
if (opsign_active) p_op->op_h_b=opsign;
if (strlen(&fn_temp[0])>0)
if (strlen(&fn_temp[0]) > HL_NMLEN)
{
ECHO_CL; wl_caret(3+p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("The H option string argument is too long.\n");
(*p_outf)("Try +Hmenu for a list of help message names.\n");
}
else
if (hel_num(&fn_temp[0]) == HL_ERR)
{
ECHO_CL; wl_caret(3+p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("Unrecognised message name in argument to H option.\n");
(*p_outf)("Try +Hmenu for a list of help message names.\n");
}
else
strcpy(&p_op->op_h_s[0],&fn_temp[0]);
break;
case 'B':
{
uword i;
if (strlen(fn_temp)==0)
{
ECHO_CL; wl_caret(3+p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("The B option must be followed by one or more digits.\n");
(*p_outf)("The digits must be in the range 1..7.\n");
break;
}
for (i=0;i<strlen(fn_temp);i++)
if (fn_temp[i]<'1' || fn_temp[i]>'7')
{
ECHO_CL; wl_caret(2+p_startopt-comline+(1+i),p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("Error: Characters in B argument must be '1'..'7'.\n");
goto endbop;
}
if (opsign_active)
for (i=0;i<strlen(fn_temp);i++)
switch (fn_temp[i])
{
case '1': p_op->op_b1_b=opsign; break;
case '2': p_op->op_b2_b=opsign; break;
case '3': p_op->op_b3_b=opsign; break;
case '4': p_op->op_b4_b=opsign; break;
case '5': p_op->op_b5_b=opsign; break;
case '6': p_op->op_b6_b=opsign; break;
case '7': p_op->op_b7_b=opsign; break;
default: as_bomb("op_add: b option case defaulted.");
}
endbop:
break;
}
default:
ECHO_CL; wl_caret(2+p_startopt-comline,p_outf);
(*p_outf)("FunnelWeb command line syntax error.\n");
(*p_outf)("Error: Unknown option letter.\n");
(*p_outf)("Legal option letters are FIOTLCSWPXZ.\n");
(*p_outf)("(Note: But P is not yet implemented!)\n");
break;
}
} /* End while. */
if (seen_error) goto failure;
return TRUE;
failure: ASSIGN(*p_op,op_save); return FALSE;
}
/******************************************************************************/
EXPORT void op_wri(p_op,p_outf)
p_op_t p_op;
void (*p_outf) P_((char *));
{
#define STC(BOOLV) ((BOOLV)?'+':'-')
sprintf(linet1," %cB1 %cB2 %cB3 %cB4 %cB5 %cB6 %cB7\n",
STC(p_op->op_b1_b),
STC(p_op->op_b2_b),
STC(p_op->op_b3_b),
STC(p_op->op_b4_b),
STC(p_op->op_b5_b),
STC(p_op->op_b6_b),
STC(p_op->op_b7_b));(*p_outf)(linet1);
sprintf(linet1," +C%u\n" , (unsigned) p_op->op_c_i );(*p_outf)(linet1);
sprintf(linet1," %cD\n" , STC(p_op->op_d_b) );(*p_outf)(linet1);
sprintf(linet1," %cF%s\n", STC(p_op->op_f_b), p_op->op_f_s );(*p_outf)(linet1);
sprintf(linet1," %cH%s\n", STC(p_op->op_h_b), p_op->op_h_s );(*p_outf)(linet1);
sprintf(linet1," +I%s\n" , p_op->op_i_s );(*p_outf)(linet1);
sprintf(linet1," %cJ%s\n", STC(p_op->op_j_b), p_op->op_j_s );(*p_outf)(linet1);
sprintf(linet1," %cK\n" , STC(p_op->op_k_b) );(*p_outf)(linet1);
sprintf(linet1," %cL%s\n", STC(p_op->op_l_b), p_op->op_l_s );(*p_outf)(linet1);
sprintf(linet1," %cO%s\n", STC(p_op->op_o_b), p_op->op_o_s );(*p_outf)(linet1);
sprintf(linet1," %cQ\n" , STC(p_op->op_q_b) );(*p_outf)(linet1);
sprintf(linet1," %cS%u\n", STC(p_op->op_s_b), (unsigned) p_op->op_s_i );(*p_outf)(linet1);
sprintf(linet1," %cT%s\n", STC(p_op->op_t_b), p_op->op_t_s );(*p_outf)(linet1);
sprintf(linet1," %cU%s\n", STC(p_op->op_u_b), p_op->op_u_s );(*p_outf)(linet1);
sprintf(linet1," %cW%u\n", STC(p_op->op_w_b), (unsigned) p_op->op_w_i );(*p_outf)(linet1);
sprintf(linet1," %cX%s\n", STC(p_op->op_x_b), p_op->op_x_s );(*p_outf)(linet1);
}
/******************************************************************************/
/* End of OPTION.C */
/******************************************************************************/
|
