CAWF.1
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- ." manual page for cawf(1)
- ."
- ."
- ." Copyright (c) 1991 Purdue University Research Foundation,
- ." West Lafayette, Indiana 47907. All rights reserved.
- ."
- ." Written by Victor A. Abell <abe@cc.purdue.edu>, Purdue
- ." University Computing Center. Not derived from licensed software;
- ." derived from awf(1) by Henry Spencer of the University of Toronto.
- ."
- ." Permission is granted to anyone to use this software for any
- ." purpose on any computer system, and to alter it and redistribute
- ." it freely, subject to the following restrictions:
- ."
- ." 1. The author is not responsible for any consequences of use of
- ." this software, even if they arise from flaws in it.
- ."
- ." 2. The origin of this software must not be misrepresented, either
- ." by explicit claim or by omission. Credits must appear in the
- ." documentation.
- ."
- ." 3. Altered versions must be plainly marked as such, and must not
- ." be misrepresented as being the original software. Credits must
- ." appear in the documentation.
- ."
- ." 4. This notice may not be removed or altered.
- ."
- ." Some of the stuff in this file is a bit contorted, because it's also
- ." the regression-test input.
- .nr ES 5n
- .de ES
- .PP
- .in +\n(ESu
- .nf
- ..
- .de EE
- .in -\n(ESu
- .fi
- .PP
- ..
- .de PT
- .ie \n(.$>1 .TP "\$2"
- .el .TP
- .ie !'\$1'' \$1
- .el (bu
- ..
- .ds Nr fInrofffR
- .TH CAWF 1 "November, 1992"
- .BY "Purdue University"
- .SH NAME
- cawf, nroff - C version of the nroff-like, Amazingly Workable (text) Formatter
- .SH SYNOPSIS
- .B cawf
- [
- .BI -c config
- ] [
- .BI -d device
- ] [
- .B -e
- ] [
- .BI -f font
- ] [
- .B -h
- ] [
- .BI -m acros
- ] [ file ... ]
- .SH DESCRIPTION
- .if t .tm OOPS -- CAWF THINKS IT'S TROFF!!!
- .I Cawf
- formats the text from the input fIfilefR(s)
- (standard input if none)
- in an approximation of *(Nr.
- It comes closest to duplicating *(Nr's
- .B man
- or
- .B ms
- macro package styles.
- It has some limited support for *(Nr's
- .B me
- macros.
- .SH OPTIONS
- Options must precede file names.
- .TP
- .BI -c config
- defines an alternate path to the device configuration file.
- Normally the device configuration file is found in
- .I device.cf
- in the
- .I cawf
- library (see the
- .B FILES
- section).
- .IP
- The device configuration file contains device character strings for
- selecting fonts and the bold or italic type faces.
- See the
- .B DEVICES
- section for more information.
- .TP
- .BI -d device
- specifies the name of the output device.
- There are three built-in devices - ANSI, NONE and NORMAL - and
- other devices may be defined in the device configuration file.
- See the
- .B DEVICES
- section for more information.
- .IP
- The NORMAL device is the default.
- .TP
- .B -e
- directs
- .I cawf
- to issue an eject (FF or ^L) after the last page.
- .TP
- .BI -f font
- specifies the one font for the device, declared with the
- .BI -d device
- option, that is to be used for the
- entire document.
- .I Font
- must match a font associated with the device's stanza in the device
- configuration file.
- See the
- .B DEVICES
- section for more information.
- .IP
- No
- .I font
- may be specified for the built-in devices ANSI, NONE or NORMAL.
- .TP
- .B -h
- requests a help display.
- .TP
- .BI -m acro
- specifies the macro file to be used.
- The standard
- .I cawf
- distribution supplies macro files to support ``-man'', ``-me'' or ``-ms''.
- .I Cawf
- finds a macro file by constructing its name from `m',
- .I acro
- and
- .B .mac
- - e. g.,
- .BI -m an
- is converted to
- .BR man.mac .
- The default directory for macro files is defined when
- .I cawf
- is compiled; it's fIC:\SYS\LIB\CAWFfP in the MS-DOS environment;
- .I /usr/lib/cawf
- in the UNIX environment.
- .TP
- file ...
- are the names of files containing *(Nr source text.
- .SH NROFF COMPATIBILITY
- .I Cawf
- accepts the following raw *(Nr requests:
- .LP
- .e" .ad .bp .br .ce .de .di .ds
- .el .fi .fl .ft .i0 .ie .if .in
- .it .lg .li .ll .ls .na .ne .nf
- .nr .ns .pl .po .ps .rm .rn .rr
- .rs .so .sp .ta .ti .tm .tr
- .LP
- and the following in-text codes:
- .ES
- e$ e% e* e" ec ef eh ek
- en es ew
- .EE
- plus the full list of *(Nr/c
- .I troff
- special characters in
- the original V7 fItrofffR manual.
- .PP
- Many restrictions are present; the behavior in general is a subset of
- *(Nr's. Of particular note are the following:
- .IP (bu 2
- The fully supported nroff request control character is the period.
- There is limited support for the non-break, acute accent control
- character.
- .PT
- Point sizes do not exist;
- .B .ps
- is ignored.
- .PT
- Special vertical spacing - the
- .B .vs
- request included - is ignored.
- .PT
- Conditionals cover only the numeric comparisons >, =, <, >= and <= on
- .BR en(.$ ;
- string com%par%isons between a macro parameter and a literal;
- .B n
- (always true);
- and
- .BR t
- (always false).
- Only single line input is accepted from conditionals;
- multi-line input - e.g., \(fIanythingfP\) - is not supported.
- .PT
- The handling of strings is generally primitive.
- .IP (bu
- Horizontal motion via
- .B eh
- must be supplied with a number register interpolation and must be
- positive - e. g.,
- .BR ewen(NN ,
- where the value in NN is >= 0.
- .IP (bu
- The
- .B ek
- function is reliable only after TAB characters, so it is useful only
- for measuring table positions.
- .IP (bu
- The
- .B .di
- request only turns output on and off - any macro name is ignored.
- .IP (bu
- Expressions - e. g.,
- .B .sp
- - are reasonably general, but the
- .BR | ,
- .BR & ,
- and
- .BR :&
- operators do not exist, there must be white space between the end of the *(Nr
- function and the beginning of the expression, and
- .B ew
- requires that quote (') be used as the delimiters.
- .B ew
- counts the characters inside the quotes and scales the result in ens,
- so that, for example, ew'e(bu' equals 4n, and ew'e(bu'/1n equals 4.
- .PT
- The only acceptable count for the
- .B .it
- request is one,
- and it is effective only with
- .BR man ,
- .B me
- or
- .B ms
- macros.
- .PT
- The default scaling factor is `v' for the
- .BR .ne ,
- .BR .sp ,
- and
- .B .pl
- raw *(Nr requests; it is `u' for
- .BR .nr ;
- and `n' for
- .BR .in ,
- .BR .ll ,
- .BR .ls ,
- .BR .po ,
- .BR .ta
- and
- .BR .ti .
- (A different scaling factor may be specified with a trailing character.)
- .PT
- Some obsolete or meaningless requests -
- .BR .i0 ,
- .B .lg
- and
- .B .li
- &- are silently ignored.
- .P
- White space at the beginning of lines,
- and embedded white space within lines is dealt with properly.
- Sentence terminators at ends of lines are understood to imply
- extra space afterward in filled lines.
- Tabs are im%plemented crudely and not exactly, although
- usually they work as expected.
- Hyphenation is done only at explicit hyphens, em-dashes, and *(Nr
- discretionary hyphens.
- By default bold and italic characters are emulated with backspacing and
- overprinting, but the
- .B -d
- and
- .B -f
- options, combined with the contents of the device configuration file,
- may be used to generate special codes for bold and italic characters.
- (See the
- .B DEVICES
- section for more information.)
- .SH "MAN MACROS"
- The
- .B man
- macro set replicates the full V7 manual macros,
- plus a few semi-random oddballs.
- The full list is:
- .ES
- &.AT .B .BI .BR .BY .DE .DS .DT .HP .I
- &.IB .IP .IR .IX .LP .NB .P .PD .PP .RB
- &.RE .RI .RS .SH .SM .SS .TH .TP .UC
- .EE
- .B .BY
- and
- .B .NB
- each take a single string argument (respectively, an indi%cation of
- authorship and a note about the status of the manual page) and arrange
- to place it in the page footer.
- .B .AT
- and
- .B .IX
- do nothing.
- .SH "ME MACROS"
- The
- .B me
- macro subset has been derived from the
- .I cawf
- .B ms
- macros by Chet Creider <creider@csd.uwo.ca>.
- It includes:
- .ES
- &.(l .(q .)l .)q .b .bu .i .ip .lp .np
- &.pp .r .sh .sm .u .uh
- .EE
- The .(l C and .(l L options are supported.
- In addition, the .AB, .AE, .AI, .AU, .DA, .ND, .TL and .UX macros have
- been retained from the
- .B ms
- set, and the .XP macro has been borrowed from the Berkeley additions to the
- .B ms
- macro set.
- .SH "MS MACROS"
- The
- .B ms
- macro set is a substantial subset of the V7 manuscript macros.
- The macros are:
- .ES
- &.AB .AE .AI .AU .B .CD .DA .DE .DS .I
- &.ID .IP .LD .LG .LP .ND .NH .NL .PP .QE
- &.QP .QS .R .RE .RP .RS .SH .SM .TL .TP
- &.UL .UX
- .EE
- Size changes are recognized but ignored, as are
- .B .RP
- and
- .BR .ND .
- .B .UL
- just prints its argument in italics.
- .BR .DS / .DE
- does not do a keep,
- nor do any of the other macros that normally imply keeps.
- .LP
- The
- .B DY
- string variable is available.
- The
- .BR PD ,
- .BR PI ,
- and
- .BR LL
- number registers exist and can be changed.
- .SH "HEADERS AND FOOTERS"
- .I Cawf
- allows the placement of text into the five line header and
- footer sections from the
- .BR LH ,
- .BR CH ,
- .BR RF ,
- .BR LF ,
- .BR CF ,
- and
- .B RF
- string variables, via the control of the
- .B .^b
- request:
- .LP
- .ta w'.^b HF 0'u+3n
- .nf
- &.^b fh 1 enables header string placement on the first page
- &.^b fh 0 disables header string placement on the first page
- &.^b HF 1 enables header/footer string placement
- &.^b HF 0 disables header/footer string placement
- .fi
- .LP
- There are appropriate
- .B .^b
- requests in the distribution
- .BR man ,
- .B me
- and
- .B ms
- macro files.
- (The
- .B me
- and
- .B ms
- macro files use another
- .B .^b
- request, fB.^b NHfP, to enable numbered header processing.)
- .SH OUTPUT
- The default output format supported by
- .IR cawf ,
- in its distributed form,
- is that appropriate to a dumb terminal,
- using overprinting for italics (via underlining) and bold.
- The *(Nr special characters are printed as some vague approximation
- (it's sometimes extremely vague) to their correct appearance.
- .PP
- One part of
- .IR cawf 's
- knowledge of the output device, related to the formation of characters,
- is established by a device file, which is read before the user's input.
- The search for it begins in
- .IR cawf 's
- library directory, under the name fItermfP.fBdevfP
- (where fItermfR is the value of the TERM environment variable).
- Failing to find that,
- .I cawf
- searches for
- .BR dumb.dev .
- (See the
- .B FILES
- section for a description of the path to
- .IR cawf 's
- library directory.)
- The device file
- uses special internal requests
- to set up resolution, special characters
- and more normal *(Nr functions to set up page length, etc.
- .PP
- .I Cawf
- has limited support for fonts special forms of bold and italic characters.
- It is provided through the
- .B -c
- .IR config ,
- .BI -d device
- and
- .BI -f font
- options.
- See the
- .B DEVICES
- section for more information.
- .PP
- Note the distinction between the device and the output device configuration
- files.
- The device file typically defines characters and constant output parameters.
- The output device configuration file defines font and type face codes.
- It is usually not necessary to define a separate device file for each
- device represented in the output device configuration file - the
- .I dumb.dev
- device file will suffice for almost all representations.
- .SH DEVICES
- .I Cawf
- supports primitive output device configuration for font and type face
- control.
- One font may be selected for the entire document by directing
- .I cawf
- to issue a font selection control character string at the beginning
- of the document, and control character strings may be selected for
- switching between the bold, italic and Roman type faces.
- .PP
- The
- .B -c
- .IR config,
- .BI -d device
- and
- .BI -f font
- options direct the font and type face selections.
- .PP
- The
- .BI -d device
- option specifies the name of the device.
- .I Cawf
- has three built-in devices - ANSI, NONE and NORMAL.
- When the ANSI device is selected,
- .I cawf
- issues the ANSI shadow mode control codes, ``ESC [ 7 m'', to represent
- the bold face;
- the ANSI underscore control codes, ``ESC [ 4 m'', to represent the italic
- face;
- and the ANSI control codes, ``ESC [ 0 m'', to represent the ROMAN face.
- No
- .BI -f font
- specification is permitted with the ANSI device.
- .PP
- When the NONE device is selected,
- .I cawf
- uses no special output codes to represent the type faces.
- No
- .BI -f font
- specification is permitted with the ANSI device.
- .PP
- The NORMAL output device is the default.
- When it's selected,
- .I cawf
- overprints each bold character two times, using three issuances of each
- bold character, separated by backspace characters;
- it issues an underscore and backspace before each italic character.
- No
- .BI -f font
- specification is permitted with the ANSI device.
- The
- .IR bsfilt (1)
- filter may be used to further process the backspace codes output for
- a NORMAL device.
- .PP
- All other devices named in the
- .BI -d device
- option must be represented by a stanza in the device configuration file.
- The device configuration file is usually contained in
- .I device.cf
- in
- .IR cawf's
- library directory (see the
- .B FILES
- section for more information).
- An alternate device configuration file path may be specified with the
- .BI -c config
- option.
- .PP
- The
- .B DEVICE CONFIGURATION FILE
- section describes the organization of the device configuration file.
- It is easy to add devices to the
- .I device.cf
- supplied in the
- .I cawf
- distribution.
- .PP
- The
- .BI -f font
- option may be used with the
- .BI -d device
- option, when the appropriate stanza in the device configuration file
- contains an entry for the named
- .IR font .
- The
- .B DEVICE CONFIGURATION FILE
- section describes how fonts are defined in device configuration file
- stanzas.
- .SH DEVICE CONFIGURATION FILE
- The device configuration file defines the special character codes
- necessary to direct output devices to select fonts and to produce
- bold, italic and Roman type faces.
- .PP
- The configuration file is usually found in
- .I device.cf
- in
- .IR cawf 's
- library directory (see the
- .B FILES
- section for more information).
- It is organized into two main parts - comments and device stanzas.
- Comments are any lines that begin with the pound sign (`#') character.
- They are informational only and
- .I cawf
- ignores them.
- .I Cawf
- also ignores empty lines, so they may be used as vertical white space.
- .PP
- Stanzas name devices and define their font and type face control strings.
- A stanza begins with the name of the device, starting at the beginning
- of a line and occupying the entire line.
- The body of the stanza, defining fonts and type faces, is formed of
- lines beginning with white space (a TAB or space characters) that
- directly follow the device name.
- .PP
- Individual lines of the stanza body contain a key character, followed
- by a equal sign, followed by the font name (if a font key) and the
- output device control codes.
- .I Cawf
- issues the font control codes once, at the beginning of output, so
- only one font may be selected.
- The type face control codes are issued at each change of type face.
- .PP
- The key characters are:
- .ne 4
- .DS
- b for bold
- f for font definition
- i for italic
- r for Roman
- .DE
- The `b', `i' and `r' key codes are followed by an equal sign (`=') and
- their control code definition.
- The `f' key code is followed by an equal sign (`='), the font name,
- another equal sign and the font control code definition.
- .PP
- Control code definitions may contain any printable ASCII characters.
- Non-printable characters may be encoded in octal notation with the `\nnn'
- form or in hexadecimal with the `\xnn' form.
- The special code, `\E' (or `\e') represents the ESC control
- character (\033 or \x1b).
- .PP
- Here's a sample showing the definition for the HP LaserJet III.
- The stanza name is ``lj3''.
- All its non-printable characters are ESCs; the first is coded in
- octal form; the second with '\E'; the rest, in hexadecimal form.
- TAB is used as the leading white space character for the stanza
- body lines.
- .DS
- # HP LaserJet III
- lj3
- b=\033(s7B
- i=\E(s1S
- r=\x1b(s0B\x1b(s0S
- f=c10=x1b&l0Ox1b(8Ux1b(s0p12h10v0s0b3T
- f=c12ibm=x1b&l0Ox1b(10Ux1b(s0p10.00h12.0v0s0b3T
- f=lg12=x1b&l0Ox1b(8Ux1b(s12h12v0s0b6T
- .DE
- .PP
- The distribution
- .I device.cf
- file defines the following devices and fonts.
- .LP
- .ta w'kxp1180'u+3n +w'Italic:'u+3n +w'bps10'u+6n
- .nf
- .ne 3
- epson dot matrix printer in Epson FX-86e/FX-800 mode
- Bold: Double-strike
- Fonts: none
- .ne 4
- ibmppds IBM Personal Printer Data Stream (PPDS) protocol
- Bold: Double-strike
- Italic: Underline
- Fonts: none
- .ne 12
- kxp1124 Panasonic KX-P1124 dot matrix printer in PGM mode
- Bold: Emphasized
- Fonts: c10 10 Characters Per Inch (CPI) Courier
- c12 12 CPI Courier
- bps10 10 CPI Bold PS
- bps12 12 CPI Bold PS
- p10 10 CPI Prestige
- p12 12 CPI Prestige
- s10 10 CPI Script
- s12 12 CPI Script
- ss10 10 CPI Sans Serif
- ss12 12 CPI Sans Serif
- .ne 10
- kxp1180 Panasonic KX-P1180 dot matrix printer in PGM mode
- Bold: Emphasized
- Fonts: c10 10 Characters Per Inch (CPI) Courier
- c12 12 CPI Courier
- bps10 10 CPI Bold PS
- bps12 12 CPI Bold PS
- p10 10 CPI Prestige
- p12 12 CPI Prestige
- ss10 10 CPI Sans Serif
- ss12 12 CPI Sans Serif
- .ne 6
- lj3 HP LaserJet III
- Fonts: c10 10 point, 12 Characters Per Inch (CPI)
- Courier
- c12ibm 12 point, 10 CPI Courier, IBM-PC
- Symbol Set
- lg12 12 point, 12 CPI Letter Gothic
- .ne 4
- vgamono VGA monochrome monitor for MS-DOS
- (ANSI.SYS driver required for MS-DOS)
- Italic: Reverse-video
- Fonts: none
- .SH FILES
- .I Cawf
- resource files are located in the
- .I cawf
- library directory - fI C:\SYS\LIB\CAWFfP, the MS-DOS environment
- default;
- or
- .IR /usr/lib/cawf ,
- the UNIX environment default.
- These defaults can be overridden by the CAWFLIB environment variable,
- or changed in the cawflib.h header file.
- .ta w'device.cf'u+3n
- .nf
- common common device-independent initialization
- device.cf output device configurations
- *.dev device-specific initialization
- m*.mac macro package files
- .SH DIAGNOSTICS
- Unlike
- .IR nroff ,
- .I cawf
- complains whenever it sees unknown requests.
- All diagnostics appear on the standard error file.
- .ad
- .SH HISTORY
- Vic Abell of Purdue University <abe@cc.purdue.edu> derived
- .I cawf
- from
- .IR awf ,
- &``the Amazingly Workable (text) Formatter,''
- written by Henry Spencer of the University of Toronto.
- The Toronto work was a supplement to the C News project.
- The Purdue effort was aimed at producing a C language version that
- would run on small systems, particularly MS-DOS ones.
- The adaptation of the
- .B me
- macros was done by Chet Creider <creider@csd.uwo.ca>.
- Chet also contributed ideas for device, font and type face support.
- .PP
- The MS-DOS version of
- .I cawf
- has been compiled with version 2.5 of Microsoft's Quick-C compiler.
- It runs under the Mortis Kern Systems Toolkit KornShell,
- .IR ksh (1),
- and COMMAND.COM.
- .SH BUGS
- Nroff and troff mavens will have many complaints.
- Some may even represent bugs and not deliberate omissions.
- .PP
- Watch out for scaling factors - especially on requests like
- .BR ew .
- .PP
- The overprinting required to create bold and italicized characters is
- tiresome on a slow printer.
- The
- .IR bsfilt (1)
- post-filter from this distribution may be used to alleviate that
- nuisance by managing the backspacing codes from
- .IR cawf 's
- NORMAL device output.
- .PP
- The printing of bold and italic characters is sometimes better handled by
- special printer codes.
- Use
- .IR cawf 's
- .B -c
- .IR config ,
- .BI -d device
- and
- .BI -f font
- options to produce special font and device output control codes.
- .PP
- .I Cawf
- has a small amount of built-in code for the
- .BR man ,
- .B me
- and
- .B ms
- macro packages, but none for any others.
- .PP
- The stacking for the
- .B .so
- request is limited.
- .SH SEE ALSO
- bsfilt(1),
- colcrt(1),
- man(7),
- me(7),
- ms(7)
- and
- nroff(1).