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77 lines
1.8 KiB
77 lines
1.8 KiB
#! /bin/sh
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# mkh - pull headers out of C source
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PATH=/bin:/usr/bin ; export PATH
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# egrep pattern to pick out marked lines
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egrep='^ =([ ]|$)'
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# Sed program to process marked lines into lines for the header file.
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# The markers have already been removed. Two things are done here: removal
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# of backslashed newlines, and some fudging of comments. The first is done
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# because -o needs to have prototypes on one line to strip them down.
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# Getting comments into the output is tricky; we turn C++-style // comments
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# into /* */ comments, after altering any existing */'s to avoid trouble.
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peel=' /\\$/N
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/\\\n[ ]*/s///g
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/\/\//s;\*/;* /;g
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/\/\//s;//\(.*\);/*\1 */;'
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for a
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do
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case "$a" in
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-o) # old (pre-function-prototype) compiler
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# add code to comment out argument lists
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peel="$peel
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"'/^\([^#\/][^\/]*[a-zA-Z0-9_)]\)(\(.*\))/s;;\1(/*\2*/);'
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shift
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;;
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-b) # funny Berkeley __P macro
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peel="$peel
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"'/^\([^#\/][^\/]*[a-zA-Z0-9_)]\)(\(.*\))/s;;\1 __P((\2));'
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shift
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;;
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-s) # compiler doesn't like `static foo();'
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# add code to get rid of the `static'
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peel="$peel
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"'/^static[ ][^\/]*[a-zA-Z0-9_)](.*)/s;static.;;'
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shift
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;;
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-p) # private declarations
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egrep='^ ==([ ]|$)'
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shift
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;;
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-i) # wrap in #ifndef, argument is name
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ifndef="$2"
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shift ; shift
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;;
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*) break
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;;
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esac
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done
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if test " $ifndef" != " "
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then
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echo "#ifndef $ifndef"
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echo "#define $ifndef /* never again */"
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fi
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echo "/* ========= begin header generated by $0 ========= */"
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echo '#ifdef __cplusplus'
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echo 'extern "C" {'
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echo '#endif'
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for f
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do
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echo
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echo "/* === $f === */"
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egrep "$egrep" $f | sed 's/^ ==*[ ]//;s/^ ==*$//' | sed "$peel"
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echo
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done
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echo '#ifdef __cplusplus'
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echo '}'
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echo '#endif'
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echo "/* ========= end header generated by $0 ========= */"
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if test " $ifndef" != " "
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then
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echo "#endif"
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fi
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exit 0
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