207 lines
5.9 KiB
Bash
Executable File
207 lines
5.9 KiB
Bash
Executable File
#!/bin/sh
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# ccformat - convert C code to standard format
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# @(#) ccformat.sh 1.3 11/5/89 14:39:29
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# how to supress newlines in echo
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case `echo -n` in
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"") n=-n; c=;;
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*) n=; c='\c';;
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esac
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# initialize
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TMPF=/tmp/ccformat.$$
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ERROR=
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TROFF=
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BCK=
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FLAGS="-st -di8 -npsl -bap -bad -bbb -nbc -i4 -d0 -nip -nfc1 -cd41 -c49"
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trap 'rm -f .ind.$$ $TMPF; exit 1' 1 2 3 15
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# parse command options
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while :
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do
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case $1 in
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-t) TROFF=-troff;;
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-b) case $# in
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1) ERROR="-b option requires backup argument"; break;;
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*) BCK=$2; shift;;
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esac;;
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-T) case $# in
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1) ERROR="-T option requires typename argument"; break;;
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*) FLAGS="$FLAGS -T$2"; shift;;
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esac;;
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-*) ERROR="invalid option: $1"; break;;
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*) break;;
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esac
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shift
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done
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# check for invalid commands
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test -z "$ERROR" || {
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echo "$0: $ERROR" 1>&2
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echo "usage: $0 [-b backup] [-t] [-T typename] [file(s)]" 1>&2
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exit 1; }
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# format the files
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case $# in
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0) indent $TROFF $FLAGS;;
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*) case "$TROFF" in
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-troff) for i in $*
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do
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indent $TROFF $FLAGS $i
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done;;
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*) for i in $*
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do
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echo $n $i... $c
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test -z "$BCK" || cp $i $i"$BCK" || { echo backup FAILED; exit 1; }
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{ # some versions of indent return garbage exit status -- gack!
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(indent $FLAGS <$i 2>.ind.$$ >$TMPF || test ! -s .ind.$$) >$TMPF &&
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# try a device full check
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echo >>$TMPF && (
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# ignore interrupts while we overwrite the original file
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trap '' 1 2 3 15; cp $TMPF $i
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) && echo replaced; } || { echo replacement FAILED; exit 1; }
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done;;
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esac;;
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esac
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rm -f $TMPF .ind.$$
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exit
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#++
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# NAME
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# ccformat 1
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# SUMMARY
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# convert C source text to standard format
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# PROJECT
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# sdetools
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# SYNOPSIS
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# ccformat [-b backup] [-t] [-T typename] [file(s)]
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# DESCRIPTION
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# The \fIccformat\fR command adjusts the layout of C program text
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# such that it approximates the Kernighan and Ritchie coding style.
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#
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# If no file names are specified, \fIccformat\fR reads
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# from standard input and writes the result to standard output.
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# This is convenient for source formatting from within a text
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# editor program.
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#
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# Otherwise, the named files are overwritten with their
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# formatted equivalent. The \fI-b\fR option (see below) provides
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# a way to create backup copies of the original files.
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#
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# Alternatively, the command can be used as a preprocessor for
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# pretty-printing with the \fInroff\fR or \fItroff\fR commands
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# (see the -t option below). In this case, output is always written
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# to standard output and no change is made to source files.
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#
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# The following options are recognized:
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# .TP
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# -b backup
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# Requests that a copy of the original files be saved. The backup
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# file name is constructed by appending the specified \fIbackup\fR
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# string to the original file name.
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# This option is ignored when the \fI-t\fR
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# option is specifid.
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# .TP
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# -t
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# Makes the program act as a preprocessor
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# for pretty-printing with \fInroff\fR or \fItroff\fR.
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# For example, in order to produce a pretty-printed
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# version on the line printer, use
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#
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ccformat -t file(s) | nroff -mindent | col | lp
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# .TP
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# -T typename
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# Adds \fItypename\fR to the list of type keywords.
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# Names accumulate: -T can be specified more
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# than once. You need to specify all the
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# typenames that appear in your program that
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# are defined by typedefs - nothing will be
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# harmed if you miss a few, but the program
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# won't be formatted as nicely as it should.
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# PROGRAM LAYOUT
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# .fi
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# .ad
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# The following program layout is produced:
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# .TP
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# comments
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# Comments starting in the first column are left untouched.
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# These are often carefully laid out by the programmer.
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# .sp
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# Comments that appear in-between statements are lined up with
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# the surrounding program text, and are adjusted to accomodate
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# as many words on a line as possible.
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# However, a blank line in the middle of a comment is respected.
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# .sp
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# Trailing comments after declarations begin at column 41
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# (5 tab stops).
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# Trailing comments after executable statements start at
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# column 49 (6 tab stops).
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# .TP
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# indentation
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# Statements are indented by multiples of four columns.
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# There is only one statement per line. A control statement
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# is always placed on a separate line.
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# .TP
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# braces
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# If an opening brace is preceded by a control statement (\fCif,
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# else, do, for\fR or \fCswitch\fR), it is placed on the same line
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# as the control statement.
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# .sp
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# A closing brace is placed at the same level of indentation as the
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# program text that precedes the corresponding opening brace.
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# If a closing brace is followed by a control statement (\fCelse\fR
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# or \fCwhile\fR), that control statement is placed on the same line
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# as the closing brace.
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# .sp
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# In practice, brace placement is as
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# exemplified by the books on C by B.W. Kernighan and D.M. Ritchie.
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# .TP
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# blanks
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# Blanks are placed around assignment and arithmetic operators.
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# Commas in declarations or parameter lists are followed by one blank.
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# .sp
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# In the following cases a
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# blank line is inserted if it is not already present in the text:
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# 1) in front of a block comment, 2) between local declarations and
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# executable statements 3) after each function body.
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# .TP
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# declarations
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# In the output, each variable declaration appears on
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# a separate line.
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# COMMANDS
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# indent(1)
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# FILES
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# /tmp/ccformat.* intermediate files
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# SEE ALSO
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# indent(1)
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# DIAGNOSTICS
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# Indent may complain in case of syntax errors. These show
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# up as comments in the resulting program text.
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# BUGS
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# The programs seems to beave even when fed ANSI C or even C++
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# code; this has not been tested thoroughly, however.
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#
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# Will produce useless files when fed with anything that is
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# not C program text. This does not imply a judgment about
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# C programs in general.
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# AUTHOR(S)
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# W.Z. Venema
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# Eindhoven University of Technology
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# Department of Mathematics and Computer Science
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# Den Dolech 2, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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# CREATION DATE
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# Fri May 6 14:07:04 MET DST 1988
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# STATUS
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# ccformat.sh 1.3 11/5/89 14:39:29 (draft)
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#--
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