305 lines
9.3 KiB
Groff
305 lines
9.3 KiB
Groff
.\" Copyright (c) 1980, 1990, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)error.1 8.1 (Berkeley) 6/6/93
|
|
.\"
|
|
.Dd June 6, 1993
|
|
.Dt ERROR 1
|
|
.Os BSD 4
|
|
.Sh NAME
|
|
.Nm error
|
|
.Nd analyze and disperse compiler error messages
|
|
.Sh SYNOPSIS
|
|
.Nm error
|
|
.Op Fl n
|
|
.Op Fl s
|
|
.Op Fl q
|
|
.Op Fl v
|
|
.Op Fl t Ar suffixlist
|
|
.Op Fl I Ar ignorefile
|
|
.Op name
|
|
.Sh DESCRIPTION
|
|
.Nm Error
|
|
analyzes and optionally disperses the diagnostic error messages
|
|
produced by a number of compilers and language processors to the source
|
|
file and line where the errors occurred. It can replace the painful,
|
|
traditional methods of scribbling abbreviations of errors on paper, and
|
|
permits error messages and source code to be viewed simultaneously
|
|
without machinations of multiple windows in a screen editor.
|
|
.Pp
|
|
Options are:
|
|
.Bl -tag -width Ds
|
|
.It Fl n
|
|
Do
|
|
.Em not
|
|
touch any files; all error messages are sent to the
|
|
standard output.
|
|
.It Fl q
|
|
The user is
|
|
.Ar queried
|
|
whether s/he wants to touch the file.
|
|
A ``y'' or ``n'' to the question is necessary to continue.
|
|
Absence of the
|
|
.Fl q
|
|
option implies that all referenced files
|
|
(except those referring to discarded error messages)
|
|
are to be touched.
|
|
.It Fl v
|
|
After all files have been touched,
|
|
overlay the visual editor
|
|
.Xr \&vi 1
|
|
with it set up to edit all files touched,
|
|
and positioned in the first touched file at the first error.
|
|
If
|
|
.Xr \&vi 1
|
|
can't be found, try
|
|
.Xr \&ex 1
|
|
or
|
|
.Xr \&ed 1
|
|
from standard places.
|
|
.It Fl t
|
|
Take the following argument as a suffix list.
|
|
Files whose suffixes do not appear in the suffix list are not touched.
|
|
The suffix list is dot separated, and ``*'' wildcards work.
|
|
Thus the suffix list:
|
|
.Pp
|
|
.Dl ".c.y.foo*.h"
|
|
.Pp
|
|
allows
|
|
.Nm error
|
|
to touch files ending with ``.c'', ``.y'', ``.foo*'' and ``.y''.
|
|
.It Fl s
|
|
Print out
|
|
.Em statistics
|
|
regarding the error categorization.
|
|
Not too useful.
|
|
.El
|
|
.Pp
|
|
.Nm Error
|
|
looks at the error messages,
|
|
either from the specified file
|
|
.Ar name
|
|
or from the standard input,
|
|
and attempts to determine which
|
|
language processor produced each error message,
|
|
determines the source file and line number to which the error message refers,
|
|
determines if the error message is to be ignored or not,
|
|
and inserts the (possibly slightly modified) error message into
|
|
the source file as a comment on the line preceding to which the
|
|
line the error message refers.
|
|
Error messages which can't be categorized by language processor
|
|
or content are not inserted into any file,
|
|
but are sent to the standard output.
|
|
.Nm Error
|
|
touches source files only after all input has been read.
|
|
.Pp
|
|
.Nm Error
|
|
is intended to be run
|
|
with its standard input
|
|
connected via a pipe to the error message source.
|
|
Some language processors put error messages on their standard error file;
|
|
others put their messages on the standard output.
|
|
Hence, both error sources should be piped together into
|
|
.Nm error .
|
|
For example, when using the
|
|
.Xr csh 1
|
|
syntax,
|
|
.Pp
|
|
.Dl make \-s lint \&| error \-q \-v
|
|
.Pp
|
|
will analyze all the error messages produced
|
|
by whatever programs
|
|
.Xr make 1
|
|
runs when making lint.
|
|
.Pp
|
|
.Nm Error
|
|
knows about the error messages produced by:
|
|
.Xr make 1 ,
|
|
.Xr \&cc 1 ,
|
|
.Xr cpp 1 ,
|
|
.Xr ccom 1 ,
|
|
.Xr \&as 1 ,
|
|
.Xr \&ld 1 ,
|
|
.Xr lint 1 ,
|
|
.Xr \&pi 1 ,
|
|
.Xr \&pc 1 ,
|
|
.Xr f77 1 ,
|
|
and
|
|
.Em DEC Western Research Modula\-2 .
|
|
.Nm Error
|
|
knows a standard format for error messages produced by
|
|
the language processors,
|
|
so is sensitive to changes in these formats.
|
|
For all languages except
|
|
.Em Pascal ,
|
|
error messages are restricted to be on one line.
|
|
Some error messages refer to more than one line in more than
|
|
one files;
|
|
.Nm error
|
|
will duplicate the error message and insert it at
|
|
all of the places referenced.
|
|
.Pp
|
|
.Nm Error
|
|
will do one of six things with error messages.
|
|
.Bl -tag -width Em synchronize
|
|
.It Em synchronize
|
|
Some language processors produce short errors describing
|
|
which file it is processing.
|
|
.Nm Error
|
|
uses these to determine the file name for languages that
|
|
don't include the file name in each error message.
|
|
These synchronization messages are consumed entirely by
|
|
.Nm error .
|
|
.It Em discard
|
|
Error messages from
|
|
.Xr lint 1
|
|
that refer to one of the two
|
|
.Xr lint 1
|
|
libraries,
|
|
.Pa /usr/libdata/lint/llib-lc
|
|
and
|
|
.Pa /usr/libdata/lint/llib-port
|
|
are discarded,
|
|
to prevent accidently touching these libraries.
|
|
Again, these error messages are consumed entirely by
|
|
.Nm error .
|
|
.It Em nullify
|
|
Error messages from
|
|
.Xr lint 1
|
|
can be nullified if they refer to a specific function,
|
|
which is known to generate diagnostics which are not interesting.
|
|
Nullified error messages are not inserted into the source file,
|
|
but are written to the standard output.
|
|
The names of functions to ignore are taken from
|
|
either the file named
|
|
.Pa .errorrc
|
|
in the users's home directory,
|
|
or from the file named by the
|
|
.Fl I
|
|
option.
|
|
If the file does not exist,
|
|
no error messages are nullified.
|
|
If the file does exist, there must be one function
|
|
name per line.
|
|
.It Em not file specific
|
|
Error messages that can't be intuited are grouped together,
|
|
and written to the standard output before any files are touched.
|
|
They will not be inserted into any source file.
|
|
.It Em file specific
|
|
Error message that refer to a specific file,
|
|
but to no specific line,
|
|
are written to the standard output when
|
|
that file is touched.
|
|
.It Em true errors
|
|
Error messages that can be intuited are candidates for
|
|
insertion into the file to which they refer.
|
|
.El
|
|
.Pp
|
|
Only true error messages are candidates for inserting into
|
|
the file they refer to.
|
|
Other error messages are consumed entirely by
|
|
.Nm error
|
|
or are written to the standard output.
|
|
.Nm Error
|
|
inserts the error messages into the source file on the line
|
|
preceding the line the language processor found in error.
|
|
Each error message is turned into a one line comment for the
|
|
language,
|
|
and is internally flagged
|
|
with the string ``###'' at
|
|
the beginning of the error,
|
|
and ``%%%'' at the end of the error.
|
|
This makes pattern searching for errors easier with an editor,
|
|
and allows the messages to be easily removed.
|
|
In addition, each error message contains the source line number
|
|
for the line the message refers to.
|
|
A reasonably formatted source program can be recompiled
|
|
with the error messages still in it,
|
|
without having the error messages themselves cause future errors.
|
|
For poorly formatted source programs in free format languages,
|
|
such as C or Pascal,
|
|
it is possible to insert a comment into another comment,
|
|
which can wreak havoc with a future compilation.
|
|
To avoid this, programs with comments and source
|
|
on the same line should be formatted
|
|
so that language statements appear before comments.
|
|
.Pp
|
|
.Nm Error
|
|
catches interrupt and terminate signals,
|
|
and if in the insertion phase,
|
|
will orderly terminate what it is doing.
|
|
.Sh FILES
|
|
.Bl -tag -width ~/.errorrc -compact
|
|
.It Pa ~/.errorrc
|
|
function names to ignore for
|
|
.Xr lint 1
|
|
error messages
|
|
.It Pa /dev/tty
|
|
user's teletype
|
|
.El
|
|
.Sh HISTORY
|
|
The
|
|
.Nm error
|
|
command
|
|
appeared in
|
|
.Bx 4.0 .
|
|
.Sh AUTHOR
|
|
Robert Henry
|
|
.Sh BUGS
|
|
.Pp
|
|
Opens the teletype directly to do user querying.
|
|
.Pp
|
|
Source files with links make a new copy of the file with
|
|
only one link to it.
|
|
.Pp
|
|
Changing a language processor's format of error messages
|
|
may cause
|
|
.Nm error
|
|
to not understand the error message.
|
|
.Pp
|
|
.Nm Error ,
|
|
since it is purely mechanical,
|
|
will not filter out subsequent errors caused by `floodgating'
|
|
initiated by one syntactically trivial error.
|
|
Humans are still much better at discarding these related errors.
|
|
.Pp
|
|
Pascal error messages belong after the lines affected
|
|
(error puts them before). The alignment of the `\\' marking
|
|
the point of error is also disturbed by
|
|
.Nm error .
|
|
.Pp
|
|
.Nm Error
|
|
was designed for work on
|
|
.Tn CRT Ns 's
|
|
at reasonably high speed.
|
|
It is less pleasant on slow speed terminals, and has never been
|
|
used on hardcopy terminals.
|