How to rewrite C-include headername character to lower one?-CodePudding

I want to lowercase all the header filenames in C-Code, but the "/" gets in the way and I can't get it to convert properly using sed and awk or grep commands.

#include statement is one line long, so I can just lowercase this part, but when I use the canonical conversion 's/before/after/', it doesn't seem to convert properly when there is a "/" in the before and after string, indicating a directory. If you try to escape with " I've tried escaping it with "" but it doesn't work. Is there any way to convert it properly?

CodePudding user response：

Is there any way to convert it properly?

Use some different separator.

sed 's~before~after~'

With GNU sed, you can convert it to lowercase:

sed 's~BEFORE~\L&~'

CodePudding user response：

This is my trial code on GNU. I've tried to exchange sed's separator, but it doesn't work well.

1.textcode for exchanging the header-letter filename:test.c #include /A/B/INC/HEADER.h void main(void)
{ int A,B,C,d,e,f; }

2.Bash code #!/bin/bash echo "start" str1=$(awk "/#include/" test.c) echo $str1 ==> #include /A/B/INC/HEADER.h str2=$(echo ${str1} | tr 'A-Z' 'a-z') echo $str2 ==> #include /a/b/inc/header.h str3='/' str4='s/' str5='g' str6="$str4$str1$str3$str2$str3$str5" ==>s/#include /A/B/INC/HEADER.h/#include /a/b/inc/header.h/g echo $str6 sed -e ${str6} test.c >evi ==> it doesn't work well