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64 lines
1.5 KiB
Bash
64 lines
1.5 KiB
Bash
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#!/bin/sh
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# Copyright 2009 The Go Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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# generate HTML for a program excerpt.
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# first arg is file name
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# second arg is awk pattern to match start line
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# third arg is awk pattern to stop processing
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#
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# missing third arg means print one line
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# third arg "END" means proces rest of file
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# missing second arg means process whole file
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#
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# examples:
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#
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# prog.sh foo.go # whole file
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# prog.sh foo.go "/^func.main/" # signature of main
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# prog.sh foo.go "/^func.main/" "/^}/ # body of main
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#
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# non-blank lines are annotated with line number in file
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echo "<pre> <!-- $* -->"
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case $# in
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3)
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if test "$3" = "END" # $2 to end of file
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then
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awk '
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BEGIN { printing = 0 }
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'$2' { printing = 1; print NR "\t" $0; getline }
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printing { if($0 ~ /./) { print NR "\t" $0 } else { print "" } }
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'
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else # $2 through $3
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awk '
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BEGIN { printing = 0 }
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'$2' { printing = 1; print NR "\t" $0; getline }
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'$3' && printing { if(printing) {printing = 0; print NR "\t" $0; exit} }
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printing { if($0 ~ /./) { print NR "\t" $0 } else { print "" } }
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'
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fi
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;;
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2) # one line
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awk '
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'$2' { print NR "\t" $0; getline; exit }
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'
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;;
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1) # whole file
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awk '
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{ if($0 ~ /./) { print NR "\t" $0 } else { print "" } }
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'
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;;
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*)
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echo >&2 usage: prog.sh file.go /func.main/ /^}/
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esac <$1 |
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sed '
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s/&/\&/g
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s/"/\"/g
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s/</\</g
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s/>/\>/g
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'
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echo '</pre>'
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