'\"
'\" Generated from file 'cfront\&.man' by tcllib/doctools with format 'nroff'
'\"
.TH "fileutil::magic::cfront" n 1\&.3\&.2 tcllib "file utilities"
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.BS
.SH NAME
fileutil::magic::cfront \- Generator core for compiler of magic(5) files
.SH SYNOPSIS
package require \fBTcl 8\&.5 9\fR
.sp
package require \fBfileutil::magic::cfront ?1\&.3\&.2?\fR
.sp
package require \fBfileutil::magic::cgen ?1\&.2\&.0?\fR
.sp
package require \fBfileutil::magic::rt ?1\&.2\&.0?\fR
.sp
package require \fBstruct::list\fR
.sp
package require \fBfileutil\fR
.sp
\fB::fileutil::magic::cfront::compile\fR \fIpath\fR\&.\&.\&.
.sp
\fB::fileutil::magic::cfront::procdef\fR \fIprocname\fR \fIpath\fR\&.\&.\&.
.sp
\fB::fileutil::magic::cfront::install\fR \fIpath\fR\&.\&.\&.
.sp
.BE
.SH DESCRIPTION
.PP
This package provides the frontend of a compiler of magic(5) files
into recognizers based on the \fBfileutil::magic::rt\fR recognizer
runtime package\&. For the generator backed used by this compiler see
the package \fBfileutil::magic::cgen\fR\&.
.SH COMMANDS
.TP
\fB::fileutil::magic::cfront::compile\fR \fIpath\fR\&.\&.\&.
This command takes the paths of one or more files and directories and compiles
all the files, and the files in all the directories into a single analyzer for
all the file types specified in these files\&.  It returns a list whose first
item is a list per-file dictionaries of analyzer scripts and whose second item
is a list of analyzer commands\&.
.sp
All the files have to be in the format specified by magic(5)\&.
.sp
The result of the command is a Tcl script containing the generated
recognizer\&.
.TP
\fB::fileutil::magic::cfront::procdef\fR \fIprocname\fR \fIpath\fR\&.\&.\&.
This command behaves like \fB::fileutil::magic::cfront::compile\fR
with regard to the specified path arguments, then wraps the resulting
recognizer script into a procedure named \fIprocname\fR, puts code
setting up the namespace of \fIprocname\fR in front, and returns the
resulting script\&.
.TP
\fB::fileutil::magic::cfront::install\fR \fIpath\fR\&.\&.\&.
This command uses \fB::fileutil::magic::cfront::procdef\fR to compile
each of the paths into a recognizer procedure and installs the result
in the current interpreter\&.
.sp
The name of each new procedure is derived from the name of the
file/directory used in its creation, with file/directory "\fIFOO\fR"
causing the creation of procedure \fB::fileutil::magic::/FOO::run\fR\&.
.PP
.SH "BUGS, IDEAS, FEEDBACK"
This document, and the package it describes, will undoubtedly contain
bugs and other problems\&.
Please report such in the category \fIfileutil :: magic\fR of the
\fITcllib Trackers\fR [http://core\&.tcl\&.tk/tcllib/reportlist]\&.
Please also report any ideas for enhancements you may have for either
package and/or documentation\&.
.PP
When proposing code changes, please provide \fIunified diffs\fR,
i\&.e the output of \fBdiff -u\fR\&.
.PP
Note further that \fIattachments\fR are strongly preferred over
inlined patches\&. Attachments can be made by going to the \fBEdit\fR
form of the ticket immediately after its creation, and then using the
left-most button in the secondary navigation bar\&.
.SH "SEE ALSO"
file(1), fileutil, magic(5)
.SH KEYWORDS
file recognition, file type, file utilities, mime, type
.SH CATEGORY
Programming tools
