drygdryg/calc
1
0
Fork 0
mirror of https://github.com/lcn2/calc.git synced 2025-08-16 01:03:29 +03:00
Code Issues Packages Projects Releases Wiki Activity

Release calc version 2.11.0t7.2

Browse Source
This commit is contained in:
Landon Curt Noll
1999-10-15 11:48:41 -07:00
parent 35982c7cc8
commit 9204d2fb8c
10 changed files with 536 additions and 275 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
BUGS
View File

@@ -77,15 +77,3 @@ Known problems or mis-features:
* There is some places in the source with obscure variable names
and not much in the way of comments. We need some major cleanup
and documentation.
* On a Dec Alpha, using the Dec Alpha cc (not gcc) make check for
version 2.11.0t5.1 fails in the regression test:
From vandermj@molbio.sbphrd.com Tue Oct 5 04:06:52 1999
Subject: Re: oops, try calc version 2.10.0t5.1
Date: Tue, 05 Oct 1999 07:06:30 -0400
Regular cc on Dec alpha, 'make check' dies with:
1804: surd_value(a) == 2+3i
"": line 1706: Calling qfreenum with nozero links!!!

17
CHANGES
View File

@@ -103,6 +103,23 @@ Following is the change from calc version 2.11.0t7 to date:
n == 0 if -c, continue, without -c, stop
n < 0 continue on error, even if -c was given on the command line
Calc compilation now stops at the first scanerror.
Restored the feature where -p disables the printing of leading tabs
as of config("tab",0) had been executed. So using calc in a pipe:
calc -p 2+17 | whey
will write '19' instead of '\t17' to the whey command.
Updated calc man page and help/usage file to reflect recent
command line changes.
Converted start_done into a general calc run state enum called
run_state within the calc source.
Misc calc man page fixes.
Following is the change from calc version 2.11.0t1 to 2.11.0t6.3:

96
calc.c
View File

@@ -11,7 +11,6 @@
#include <pwd.h>
#include <sys/types.h>
#include <ctype.h>
#include <setjmp.h>
#define CALC_C
#include "calc.h"
@@ -37,40 +36,13 @@
#include <stdlib.h>
#endif
/*
* external definitions and functions
*/
extern int abortlevel; /* current level of aborts */
extern BOOL inputwait; /* TRUE if in a terminal input wait */
extern jmp_buf jmpbuf; /* for errors */
extern int isatty(int tty); /* TRUE if fd is a tty */
extern int p_flag; /* TRUE => pipe mode */
extern int q_flag; /* TRUE => don't execute rc files */
extern int u_flag; /* TRUE => unbuffer stdin and stdout */
extern int d_flag; /* TRUE => disable heading, lib_debug == 0 */
extern int stoponerror; /* >0 => stop, <0 => continue, ==0 => use -c */
extern char *pager; /* $PAGER or default */
extern int stdin_tty; /* TRUE if stdin is a tty */
extern int interactive; /* TRUE if interactive session (no cmd args) */
extern char *program; /* our name */
extern char cmdbuf[]; /* command line expression */
extern char *version(void); /* return version string */
/*
* static definitions and functions
*/
static char *usage = "usage: %s [-C] [-e] [-h] [-i] [-m mode] [-n] [-p]\n"
"\t[-q] [-u] [-c] [-d] [[--] calc_cmd ...]\n";
static char *usage = "usage: %s [-c] [-C] [-d] [-e] [-h] [-i] [-m mode]\n"
"\t[-n] [-p] [-q] [-u] [-v] [[--] calc_cmd ...]\n";
static void intint(int arg); /* interrupt routine */
static int havecommands;
static int c_flag; /* To permit continuation after error */
static int i_flag; /* To go interactive if permitted */
/*
* Top level calculator routine.
@@ -163,8 +135,7 @@ main(int argc, char **argv)
exit(1);
}
}
interactive = (optind >= argc);
havecommands = !interactive;
havecommands = (optind < argc);
/*
* look at the length of any trailing command args
@@ -258,69 +229,73 @@ main(int argc, char **argv)
post_init = TRUE;
}
/*
* (re)establish the interrupt handler
*/
(void) signal(SIGINT, intint);
if (start_done == 0) {
/*
* execute calc code based on the run state
*/
if (run_state == RUN_PRE_BEGIN) {
if (!q_flag && allow_read) {
start_done = 1;
run_state = RUN_PRE_RCFILES;
runrcfiles();
}
start_done = 2;
run_state = RUN_POST_RCFILES;
}
if (start_done == 1) {
if (run_state == RUN_PRE_RCFILES) {
fprintf(stderr, "Execution error in rcfiles\n");
if ((c_flag && !stoponerror) || stoponerror < 0) {
getcommands(FALSE);
start_done = 2;
run_state = RUN_POST_RCFILES;
} else {
if ((havecommands && !i_flag) || !stdin_tty)
start_done = 7;
run_state = RUN_STOP_ON_ERROR;
else if (havecommands)
start_done = 4;
run_state = RUN_POST_CMD_ARGS;
else
start_done = 2;
run_state = RUN_POST_RCFILES;
}
}
if (start_done == 2) {
if (run_state == RUN_POST_RCFILES) {
if (havecommands) {
start_done = 3;
run_state = RUN_PRE_CMD_ARGS;
(void) openstring(cmdbuf);
getcommands(FALSE);
}
start_done = 4;
run_state = RUN_POST_CMD_ARGS;
}
if (start_done == 3) {
if (run_state == RUN_PRE_CMD_ARGS) {
fprintf(stderr, "Execution error in commands\n");
if ((c_flag && !stoponerror) || stoponerror < 0) {
getcommands(FALSE);
start_done = 4;
}
else {
run_state = RUN_POST_CMD_ARGS;
} else {
closeinput();
if (!stdin_tty || !i_flag)
start_done = 7;
run_state = RUN_STOP_ON_ERROR;
else
start_done = 4;
run_state = RUN_POST_CMD_ARGS;
}
}
if (start_done == 4) {
if (run_state == RUN_POST_CMD_ARGS) {
if (stdin_tty && ((havecommands && !i_flag) || p_flag))
start_done = 6;
run_state = RUN_NOT_TOP_LEVEL;
else
openterminal();
}
else if (start_done == 5) {
if (!stdin_tty && (!c_flag || stoponerror) && stoponerror >= 0) {
start_done = 7;
}
else if ((c_flag && !stoponerror) || stoponerror < 0)
} else if (run_state == RUN_TOP_LEVEL) {
if (!stdin_tty && (!c_flag || stoponerror) &&
stoponerror >= 0) {
run_state = RUN_STOP_ON_ERROR;
} else if ((c_flag && !stoponerror) || stoponerror < 0)
getcommands(FALSE);
else
reinitialize();
}
if (start_done < 6) {
start_done = 5;
if (run_state < RUN_NOT_TOP_LEVEL) {
run_state = RUN_TOP_LEVEL;
getcommands(TRUE);
}
@@ -328,7 +303,8 @@ main(int argc, char **argv)
* all done
*/
libcalc_call_me_last();
return (start_done - 6) ? 1 : 0;
return (run_state == RUN_STOP_ON_ERROR ||
run_state == RUN_UNKNOWN) ? 1 : 0;
}

42
calc.h
View File

@@ -10,6 +10,7 @@
#if !defined(__CALC_H__)
#define __CALC_H__
#include <setjmp.h>
#include "value.h"
@@ -146,15 +147,34 @@ extern void showerrors(void);
*/
extern void initialize(void);
extern void reinitialize(void);
extern int isatty(int tty); /* TRUE if fd is a tty */
extern char *version(void); /* return version string */
extern int post_init; /* TRUE => setjmp for math_error is ready */
/*
* Global data definitions.
* global flags and definitions
*/
extern int abortlevel; /* current level of aborts */
extern BOOL inputwait; /* TRUE if in a terminal input wait */
extern jmp_buf jmpbuf; /* for errors */
extern int p_flag; /* TRUE => pipe mode */
extern int q_flag; /* TRUE => don't execute rc files */
extern int u_flag; /* TRUE => unbuffer stdin and stdout */
extern int d_flag; /* TRUE => disable heading, lib_debug == 0 */
extern int c_flag; /* TRUE => continue after error if permitted */
extern int i_flag; /* TRUE => try to go interactive after error */
extern int stoponerror; /* >0 => stop, <0 => continue, ==0 => use -c */
extern char *pager; /* $PAGER or default */
extern int stdin_tty; /* TRUE if stdin is a tty */
extern int havecommands; /* TRUE if have cmd args) */
extern char *program; /* our name */
extern char cmdbuf[]; /* command line expression */
extern int abortlevel; /* current level of aborts */
extern BOOL inputwait; /* TRUE if in a terminal input wait */
extern VALUE *stack; /* execution stack */
extern int start_done; /* TRUE => start up processing finished */
extern int dumpnames; /* TRUE => dump names rather than indices */
extern char *calcpath; /* $CALCPATH or default */
@@ -172,7 +192,21 @@ extern int allow_read; /* FALSE => may not open any files for reading */
extern int allow_write; /* FALSE => may not open any files for writing */
extern int allow_exec; /* FALSE => may not execute any commands */
extern int post_init; /* TRUE => setjmp for math_error is ready */
/*
* calc startup and run state
*/
typedef enum {
RUN_UNKNOWN = -1, /* unknown or unset start state */
RUN_PRE_BEGIN = 0, /* pre-startup state, calc execution started */
RUN_PRE_RCFILES = 1, /* rc files about to or are being evaluated */
RUN_POST_RCFILES = 2, /* rc files have been evaluated */
RUN_PRE_CMD_ARGS = 3, /* cmd_args about to or are being evaluated */
RUN_POST_CMD_ARGS = 4, /* cmd_args have been evaluated */
RUN_TOP_LEVEL = 5, /* running at the top interactive level */
RUN_NOT_TOP_LEVEL = 6, /* running not at the top interactive level */
RUN_STOP_ON_ERROR = 7 /* we need to stop due to errors */
} run;
extern run run_state;
/*

535
calc.man
View File

@@ -1,190 +1,356 @@
.\"
.\" Copyright (c) 1994 David I. Bell and Landon Curt Noll
.\" Copyright (c) 1993 David I. Bell and Landon Curt Noll
.\" Original man page dated 15nov93
.\" Copyright (c) 1999 David I. Bell and Landon Curt Noll
.\" Permission is granted to use, distribute, or modify this source,
.\" provided that this copyright notice remains intact.
.\"
.\" calculator by David I. Bell
.\" man page by Landon Noll
.TH calc 1 "^..^" "15nov93"
.TH calc 1 "^..^" "15Oct1999"
.SH NAME
calc \- arbitrary precision calculator
.SH SYNOPSIS
\fIcalc\fP
[\fI\-h\fP]
[\fI\-m mode\fP]
[\fI\-p\fP]
[\fI\-q\fP]
[\fI\-u\fP]
[\fI\-v\fP]
[\fIcalc_cmd \&.\|.\|.\fp]
.RB [ \-c ]
.RB [ \-C ]
.RB [ \-d ]
.RB [ \-e ]
.RB [ \-h ]
.RB [ \-i ]
.RB [ \-m\ \&mode ]
.br
.in +5n
.RB [ \-n ]
.RB [ \-p ]
.RB [ \-q ]
.RB [ \-u ]
.RB [ \-v ]
.RB [ calc_cmd\ \&.\|.\|. ]
.in -5n
.SH DESCRIPTION
\&
.br
CALC COMMAND LINE
.PP
.TP
\fI\-h\fP
Print a help message.
This option implies \fI \-q\fP.
This is equivalent to the calc command \fIhelp help\fP.
The help facility is disabled unless the \fImode\fP is 5 or 7.
See \fI\-m\fP below.
.sp
.TP
\fI\-m mode\fP
This flag sets the permission mode of calc.
It controls the ability for \fIcalc\fP to open files
and execute programs.
\fIMode\fP may be a number from 0 to 7.
.sp
The \fImode\fP value is interpreted in a way similar
to that of the \fRchmod(1)\fP octal mode:
.sp
.in +0.5i
.B \-c
Continue reading command lines even after an execution
error has caused the abandonment of a line.
.sp 1
For example:
.sp 1
.in +5n
.nf
0 do not open any file, do not execute progs
1 do not open any file
2 do not open files for reading, do not execute progs
3 do not open files for reading
4 do not open files for writing, do not execute progs
5 do not open files for writing
6 do not execute any program
7 allow everything (default mode)
calc read many_errors.cal
.fi
.in -0.5i
.sp
If one wished to run calc from a privledged user, one might
want to use \fI\-m 0\fP in an effort to make calc more secure.
.sp
\fIMode\fP bits for reading and writing apply only on an open.
.in -5n
.sp 1
will cause
.B calc
to abort on the first error, whereas:
.sp 1
.in +5n
.nf
calc -c read many_errors.cal
.fi
.in -5n
.sp 1
will
cause
.B calc
to try to process each line being read
despite the errors that it encounters.
.TP
.B \-C
Permit the execution of custom builtin functions. Without
this flag, calling the custom() builtin function will
simply generate an error.
.sp 1
Use if this flag may cause
.B calc
to execute functions that
are non-standard and that are not portable. Custom builtin
functions are disabled by default for this reason.
.TP
.B \-d
Disable the printing of the opening title. The printing
of library debug and informational messages is also disabled
as if \fBconfig("lib_debug", 0)\fP had been executed.
.sp 1
For example:
.sp 1
.in +5n
calc 'read qtime; qtime(2)'
.in -5n
.sp 1
will output something like:
.sp 1
.in +5n
.nf
qtime(utc_hr_offset) defined
It's nearly ten past six.
.fi
.in -5n
.sp 1
whereas:
.sp 1
.in +5n
.nf
calc -d 'read qtime; qtime(2)'
.fi
.in -5n
.sp 1
will just say:
.sp 1
.in +5n
.nf
It's nearly ten past six.
.fi
.in -5n
.sp 1
.TP
.B \-e
Ignore any environment variables on startup.
The getenv() builtin will still return values, however.
.TP
.B \-h
Print a help message. This option implies
.BR \-q .
This
is equivalent to the
.B calc
command help help.
The help facility is disabled unless the mode is 5 or 7.
See
.BR \-m .
.TP
.B \-i
Become interactive if possible.
Be default, if
.I calc_cmd
args are given,
.B calc
will execute them and exit.
This flag args are given,
.B calc
will execute them and exit.
This flag will cause
.B calc
to drop into interactive mode after the
commands are executed.
.sp 1
For example:
.sp 1
.in +5n
.nf
calc 2+5
.fi
.in -5n
.sp 1
will print the value 7 and exit whereas:
.sp 1
.in +5n
.nf
calc -i 2+5
.fi
.in -5n
.sp 1
will print the value 7 and prompt the user for more
.B calc
commands.
.TP
.BR \-m " mode"
This flag sets the permission mode of
.BR calc .
It controls the ability for
.B calc
to open files and execute programs.
Mode may be a number from 0 to 7.
.sp 1
The mode value is interpreted in a way similar to that
of the
.BR chmod (1)
octal mode:
.sp 1
.in +5n
.nf
0 do not open any file, do not execute progs
1 do not open any file
2 do not open files for reading, do not execute progs
3 do not open files for reading
4 do not open files for writing, do not execute progs
5 do not open files for writing
6 do not execute any program
7 allow everything (default mode)
.fi
.in -5n
.sp 1
If one wished to run
.B calc
from a privileged user, one might want to use
.B \-m
0 in an effort to make
.B calc
somewhat more secure.
.sp 1
Mode bits for reading and writing apply only on an
open.
Files already open are not effected.
Thus if one wanted to use the \fI\-m 0\fP in an effort to make
\fIcalc\fP more secure, but still wanted to read and write a specific
file, one might want to do:
.sp
.in +0.5i
Thus if one wanted to use the
.B \-m
0 in an effort to make
.B calc
somewhat more secure, but still wanted to read and write a specific
file, one might want to do in
.BR sh (1),
.BR ksh (1),
.BR bash (1)-like
shells:
.sp 1
.in +5n
.nf
\fRcalc \-m 0 3<a.file\fP
calc -m 0 3<a.file
.fi
.in -0.5i
.sp
Files presented to \fIcalc\fP in this way are opened in an unknown mode.
\fICalc\fP will attempt to read or write them if directed.
.sp
If the \fImode\fP disables opening of files for reading, then
the startup library scripts are disabled as of \fI\-q\fP was given.
The reading of key bindings is also disabled when the \fImode\fP
disables opening of files for reading.
.in -5n
.sp 1
Files presented to
.B calc
in this way are opened in an
unknown mode.
.B Calc
will attempt to read or write them if directed.
.sp 1
If the mode disables opening of files for reading, then
the startup library scripts are disabled as of
.B \-q
was given.
The reading of key bindings is also disabled
when the mode disables opening of files for reading.
.TP
\fI \-p\fP
Pipe processing is enabled by use of \-p. For example:
.sp
.in +0.5i
.B \-n
Use the new configuration defaults instead of the old
default classic defaults.
This flag as the same effect
as executing \fBconfig("all", "newcfg")\fP at startup time.
.TP
.B \-p
Pipe processing is enabled by use of
.BR \-p .
For example:
.sp 1
.in +5n
.nf
\fRecho "print 2^21701\-1, 2^23209\-1" | calc \-p | fizzbin\fP
calc -p '2^21701-1' | fizzbin
.fi
.in -0.5i
.sp
In pipe mode, \fIcalc\fP does not prompt, does not print leading tabs
and does not print the initial header.
.in -5n
.sp 1
In pipe mode,
.B calc
does not prompt, does not print leading
tabs and does not print the initial header.
The
.B \-p
flag overrides
.BR \-i .
.TP
\fI \-q\fP
Disable the use of the \fI$CALCRC\fP startup scripts.
.B \-q
Disable the use of the $CALCRC startup scripts.
.TP
\fI \-u\fP
.B \-u
Disable buffering of stdin and stdout.
.TP
\fI \-v\fP
Print the version and exit.
.B \-v
Print the
.B calc
version number and exit.
.PP
Without \fIcalc_cmd\fPs, \fIcalc\fP operates interactively.
If one or more \fIcalc_cmd\fPs are given on the command line,
\fIcalc\fP will execute them and exit.
The printing of leading tabs on output is disabled
as if \fIconfig("tab",0)\fP had been executed.
Without
.IR calc_cmd ,
.B calc
operates interactively.
If one or more
.I calc_cmd
are given on the command line,
.B calc
will execute them and exit.
If
.B \-i
is given,
.B calc
will attempt to become interactive
even of one or more
.I calc_cmd
are given on the command line.
.PP
Normally on startup, \fIcalc\fP attempts to execute a collection
of library scripts.
The environment variable \fI$CALCRC\fP (if non-existent then
a compiled in value) contains a \fI:\fP separated list of
startup library scripts.
No error conditions are produced if these startup library scripts
are not found.
Normally on startup,
.B calc
attempts to execute a collection of
library scripts.
The environment variable $CALCRC (if non-existent
then a compiled in value) contains a : separated list of startup
library scripts.
No error conditions are produced if these startup
library scripts are not found.
.PP
If the \fImode\fP disables opening of files for reading, then
the startup library scripts are disabled as of \fI\-q\fP was given
and \fI$CALCRC\fP as well as the default compiled in value are ignored.
If the mode disables opening of files for reading, then the startup
library scripts are disabled as of
.B \-q
was given and $CALCRC as well
as the default compiled in value are ignored.
.PP
Filenames are subject to ``~'' expansion (see below).
The environment variable \fI$CALCPATH\fP (if non-existent then
a compiled in value) contains a \fI:\fP separated list of search
directories.
If a file does not begin with \fI/\fP, \fI~\fP or \fI./\fP,
then it is searched for under each directory listed in the \fI$CALCPATH\fP.
It is an error if no such readable file is found.
The
environment variable $CALCPATH (if non-existent then a compiled in
value) contains a : separated list of search directories.
If a
file does not begin with /, ~ or ./, then it is searched for under
each directory listed in the $CALCPATH.
It is an error if no such
readable file is found.
.PP
Calc treats all open files, other than stdin, stdout and stderr
as files available for reading and writing.
One may present calc with an already open file in the following way:
.sp
.in +0.5i
.B Calc
treats all open files, other than stdin, stdout and
stderr as files available for reading and writing.
One may
present
.B calc
with an already open file using
.BR sh (1),
.BR ksh (1),
.BR bash (1)-like
shells is to:
.sp 1
.in +5n
calc 3<open_file 4<open_file2
.in -5n
.sp 1
For more information use the following
.B calc
commands:
.sp 1
.in +5n
.nf
\fRcalc 3<open_file 4<open_file2\fP
.fi
.in -0.5i
.PP
For more information use the following calc commands:
.PP
.in 1.0i
help usage
.br
help help
.br
help overview
help usage
help environment
.in -1.0i
.PP
OVERVIEW
.PP
\fICalc\fP is arbitrary precision arithmetic system that uses
a C-like language.
\fICalc\fP is useful as a calculator, an algorithm prototyped
and as a mathematical research tool.
More importantly, \fIcalc\fP provides one with a machine
independent means of computation.
.PP
\fICalc\fP comes with a rich set of builtin mathematical
and programmatic functions.
.PP
\fICalc\fP is distributed with library of scripts.
Written in the same C-like language, library scripts may be
read in and executed during a \fIcalc\fP session.
These library scripts are also provided because they are
useful and to serve as examples of the \fIcalc\fP language.
One may further extend \fIcalc\fP thru the
use of user defined scripts.
.PP
Internally calc represents numeric values as fractions reduced to their
lowest terms.
The numerators and denominators of these factions may grow to
arbitrarily large values.
Numeric values read in are automatically converted into rationals.
The user need not be aware of this internal representation.
.PP
For more information use the following calc commands:
.PP
.in 1.0i
help intro
.br
help builtin
.br
help stdlib
.br
help define
.br
show builtins
.br
show functions
.in -1.0i
help config
.fi
.in -5n
.sp 1
.PP
DATA TYPES
.PP
@@ -199,7 +365,9 @@ multiplication, division, negation, squaring, modulus,
rounding, exponentiation, equality, comparison, printing
and so on.
.PP
For more information use the following calc commands:
For more information use the following
.B calc
commands:
.PP
.in 1.0i
help types
@@ -220,7 +388,9 @@ procedure.
Values may be grouped together in a matrix, or into a
a list that permits stack and queue style operations.
.PP
For more information use the following calc commands:
For more information use the following
.B calc
commands:
.PP
.in 1.0i
help variable
@@ -256,7 +426,9 @@ For example:
~chongo/lib/fft_multiply.cal
.in -1.0i
.PP
For more information use the following calc command:
For more information use the following
.B calc
command:
.PP
.in 1.0i
help file
@@ -275,7 +447,9 @@ These include commands such as function definition, help,
reading in library scripts, dump files to a file, error notification,
configuration control and status.
.PP
For more information use the following calc command:
For more information use the following
.B calc
command:
.PP
.in 1.0i
help command
@@ -295,7 +469,8 @@ help config
.PD 0
.TP 20
${LIBDIR}/*.cal
library scripts shipped with calc
library scripts shipped with
.B calc
.br
.sp
.TP 20
@@ -323,7 +498,9 @@ Default value: ${CALCPATH}
.TP 5
CALCRC
On startup (unless \-h or \-q was given on the command
line), calc searches for files along this :-separated
line),
.B calc
searches for files along this :-separated
environment variable.
.br
.sp
@@ -333,7 +510,9 @@ Default value: ${CALCRC}
.TP 5
CALCBINDINGS
On startup (unless \fI\-h\fP or \fI\-q\fP was given on the command
line, or \fI\-m\fP disallows opening files for reading), calc reads
line, or \fI\-m\fP disallows opening files for reading),
.B calc
reads
key bindings from the filename specified
by this environment variable.
.br
@@ -343,9 +522,12 @@ Default value: ${CALCBINDINGS}
.SH CREDIT
\&
.br
The majority of calc was written by David I. Bell.
The majority of
.B calc
was written by David I. Bell.
.sp
Calc archives and calc-tester mailing list maintained by Landon Curt Noll.
.B Calc
archives and calc-tester mailing list maintained by Landon Curt Noll.
.sp
Thanks for suggestions and encouragement from Peter Miller,
Neil Justusson, and Landon Noll.
@@ -378,30 +560,27 @@ Copyright (c) 19xx Ernest Bowen and Landon Curt Noll
Permission is granted to use, distribute, or modify this source,
provided that this copyright notice remains intact.
.sp
Send calc comments, suggestions, bug fixes, enhancements
and interesting calc scripts that you would like you see included
Send comments, suggestions, bug fixes, enhancements
and interesting
.B calc
scripts that you would like you see included
in future distributions to:
.sp
.in +0.5i
dbell@auug.org.au
.br
chongo@toad.com
calc-tester-request@postofc.corp.sgi.com
.in -0.5i
.sp
Landon Noll maintains the official calc ftp archive at:
Landon Noll maintains the the
.B calc
web site is located at:
.sp
.in +0.5i
ftp://ftp.uu.net/pub/calc
http://reality.sgi.com/chongo/calc
.in -0.5i
.sp
Alpha test versions, complete with bugs, untested code and
experimental features may be fetched (if you are brave) under:
.sp
.in +0.5i
http://reality.sgi.com/chongo/calc/
.in -0.5i
.sp
One may join the calc testing group by sending a request to:
One may join the
.B calc
testing group by sending a request to:
.sp
.in +0.5i
calc-tester-request@postofc.corp.sgi.com
@@ -410,14 +589,14 @@ calc-tester-request@postofc.corp.sgi.com
Your message body (not the subject) should consist of:
.sp
.in +0.5i
.nf
subscribe calc-tester address
.br
end
.br
name your_full_name
.fi
.in -0.5i
.sp
where "address" is your EMail address and "your_full_name"
is your full name.
.in -0.5i
.sp
Enjoy!
Share and Enjoy! :\-)

76
help/usage
View File

@@ -2,7 +2,22 @@ Calc command line
Calc has the following command line:
calc [-C] [-e] [-h] [-i] [-m mode] [-n] [-p] [-q] [-u] [calc_cmd ...]
calc [-c] [-C] [-d] [-e] [-h] [-i] [-m mode]
[-n] [-p] [-q] [-u] [-v] [calc_cmd ...]
-c Continue reading command lines even after an execution
error has caused the abandonment of a line.
For example:
calc read many_errors.cal
will cause calc to abort on the first error, whereas:
calc -c read many_errors.cal
will cause calc to try to process each line being read
despite the errors that it encounters.
-C Permit the execution of custom builtin functions. Without
this flag, calling the custom() builtin function will
@@ -12,6 +27,27 @@ Calc command line
are non-standard and that are not portable. Custom builtin
functions are disabled by default for this reason.
-d Disable the printing of the opening title. The printing
of library debug and informational messages is also disabled
as if config("lib_debug",0) had been executed.
For example:
calc 'read qtime; qtime(2)'
will output something like:
qtime(utc_hr_offset) defined
It's nearly ten past six.
whereas:
calc -d 'read qtime; qtime(2)'
will just say:
It's nearly ten past six.
-e Ignore any environment variables on startup. The
getenv() builtin will still return values, however.
@@ -19,7 +55,21 @@ Calc command line
is equivalent to the calc command help help. The help
facility is disabled unless the mode is 5 or 7. See -m.
-i Do not about if the error count exceeds maxerr().
-i Become interactive if possible. Be default, if calc_cmd
args are given, calc will execute them and exit. This flag
will cause calc to drop into interactive mode after the
commands are executed.
For example:
calc 2+5
will print the value 7 and exit whereas:
calc -i 2+5
will print the value 7 and prompt the user for more
calc commands.
-m mode
This flag sets the permission mode of calc. It
@@ -38,7 +88,7 @@ Calc command line
6 do not execute any program
7 allow everything (default mode)
If one wished to run calc from a privledged user, one
If one wished to run calc from a privileged user, one
might want to use -m 0 in an effort to make calc more
secure.
@@ -46,7 +96,7 @@ Calc command line
open. Files already open are not effected. Thus if one
wanted to use the -m 0 in an effort to make calc more
secure, but still wanted to read and write a specific
file, one might want to do:
file, one might want to do in sh, ksh, bash-like shells:
calc -m 0 3<a.file
@@ -59,25 +109,28 @@ Calc command line
given. The reading of key bindings is also disabled
when the mode disables opening of files for reading.
-n Use the new configutation defaults instead of the old
-n Use the new configuration defaults instead of the old
default classic defaults. This flag as the same effect
as executing config("all", "newcfg") at startup time.
-p Pipe processing is enabled by use of -p. For example:
echo "print 2^21701-1, 2^23209-1" | calc -p | fizzbin
calc -p '2^21701-1' | fizzbin
In pipe mode, calc does not prompt, does not print
leading tabs and does not print the initial header.
In pipe mode, calc does not prompt, does not print leading
tabs and does not print the initial header. The -p flag
overrides -i.
-q Disable the use of the $CALCRC startup scripts.
-u Disable buffering of stdin and stdout.
-v Print calc version number and exit.
Without `calc_cmd', calc operates interactively. If one or more
`calc_cmd' are given on the command line, calc will execute them and
exit. The printing of leading tabs on output is disabled as if
config("tab",0) had been executed.
exit. If -i is given, calc will attempt to become interactive
even of one or more `calc_cmd' are given on the command line.
Normally on startup, calc attempts to execute a collection of
library scripts. The environment variable $CALCRC (if non-existent
@@ -98,7 +151,8 @@ Calc command line
Calc treats all open files, other than stdin, stdout and
stderr as files available for reading and writing. One may
present calc with an already open file in the following way:
present calc with an already open file using sh, ksh or bash-like
shells is to:
calc 3<open_file 4<open_file2

6
input.c
View File

@@ -311,7 +311,7 @@ f_open(char *name, char *mode)
*/
if (!allow_read && !allow_write) {
/* no reads and no writes means no opens! */
if (start_done) {
if (run_state > RUN_PRE_BEGIN) {
fprintf(stderr,
"open of %s mode %s - %s\n", name, mode,
"open for read or write disallowed by -m\n");
@@ -319,7 +319,7 @@ f_open(char *name, char *mode)
return NULL;
} else if (!allow_read && strchr(mode, 'r') != NULL) {
/* reading new files disallowed */
if (start_done) {
if (run_state > RUN_PRE_BEGIN) {
fprintf(stderr,
"open of %s mode %s - %s\n", name, mode,
"open for read disallowed by -m\n");
@@ -330,7 +330,7 @@ f_open(char *name, char *mode)
strchr(mode, 'a') != NULL ||
strchr(mode, '+') != NULL)) {
/* writing new files disallowed */
if (start_done) {
if (run_state > RUN_PRE_BEGIN) {
fprintf(stderr,
"open of %s mode %s - %s\n", name, mode,
"open for write disallowed by -m\n");

21
lib_calc.c
View File

@@ -63,8 +63,8 @@ int new_std = FALSE; /* TRUE (-n) => use newstd configuration */
int abortlevel; /* current level of aborts */
BOOL inputwait; /* TRUE if in a terminal input wait */
jmp_buf jmpbuf; /* for errors */
int start_done = FALSE; /* TRUE => start up processing finished */
char *program = "calc"; /* our name */
run run_state = RUN_UNKNOWN; /* calc startup and run state */
char *program = "calc"; /* our name */
char cmdbuf[MAXCMD+1+1+1]; /* command line expression + "\n\0" + guard */
@@ -83,8 +83,8 @@ int p_flag = FALSE; /* TRUE => pipe mode */
int q_flag = FALSE; /* TRUE => don't execute rc files */
int u_flag = FALSE; /* TRUE => unbuffer stdin and stdout */
int d_flag = FALSE; /* TRUE => disable heading, lib_debug == 0 */
int stoponerror = FALSE; /* >0 => stop, <0 => continue on error */
int c_flag = FALSE; /* TRUE => continue on error if permitted */
int i_flag = FALSE; /* TRUE => go interactive if permitted */
/*
* global values
@@ -96,8 +96,9 @@ char *home; /* $HOME or default */
char *pager; /* $PAGER or default */
char *shell; /* $SHELL or default */
int stdin_tty = FALSE; /* TRUE if stdin is a tty */
int interactive = FALSE; /* TRUE if interactive session (no cmd args) */
int post_init = FALSE; /* TRUE setjmp for math_error is readready */
int havecommands = FALSE; /* TRUE if have one or more cmd args */
int stoponerror = FALSE; /* >0 => stop, <0 => continue on error */
int post_init = FALSE; /* TRUE setjmp for math_error is ready */
int no_env = FALSE; /* TRUE (-e) => ignore env vars on startup */
int errmax = ERRMAX; /* if >= 0, maximum value for errcount */
@@ -164,6 +165,13 @@ libcalc_call_me_first(void)
conf->lib_debug = 0;
}
/*
* -p turns off tab
*/
if (p_flag) {
conf->tab_ok = 0;
}
/*
* initialize
*/
@@ -172,6 +180,7 @@ libcalc_call_me_first(void)
/*
* ready to rock & roll ..
*/
run_state = RUN_PRE_BEGIN;
init_done = 1;
return;
}

4
token.c
View File

@@ -643,6 +643,10 @@ scanerror(int skip, char *fmt, ...)
va_end(ap);
fprintf(stderr, "%s\n", buf);
/* bail out if continuation not permitted */
if ((!c_flag && !stoponerror) || stoponerror > 0)
longjmp(jmpbuf, 1);
/* bail out if too many errors */
if (conf->maxscancount > 0 && errorcount > conf->maxscancount) {
fputs("Too many scan errors, compilation aborted.\n", stderr);

2
version.c
View File

@@ -12,7 +12,7 @@
#define MAJOR_VER 2 /* major version */
#define MINOR_VER 11 /* minor version */
#define MAJOR_PATCH 0 /* patch level or 0 if no patch */
#define MINOR_PATCH "7.1" /* test number or empty string if no patch */
#define MINOR_PATCH "7.2" /* test number or empty string if no patch */
/*
* calc version constants