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44 lines
2.6 KiB
Perl
Executable file
44 lines
2.6 KiB
Perl
Executable file
#!/usr/bin/perl
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my $input = $ARGV[0];
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my $source = `clang-format $input`;
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# for_each_dive (...) and Q_FOREACH and friends...
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$source =~ s/(?:\G|^)(.*each.*\(.*) \* (\S.*\))$/$1 *$2/img; # if a variable is declared in the argument, '*' is an indicator for a pointer, not arithmatic
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$source =~ s/(?:\G|^)(.*each.*\(.*) \& (\S.*\))$/$1 &$2/img; # if a variable is declared in the argument, '&' is an indicator for a reference, not bit logic
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$source =~ s/(?:\G|^)(.*each[^\s(]*)\s*(\(.*)$/$1 $2/img; # we want exactly one space between keyword and opening parenthesis '('
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$source =~ s/(?:\G|^)(.*each.*\(.*\).*)\n\s*{\s*$/$1 {/img; # we want the opening curly brace on the same line, separated by a space
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$source =~ s/(?:\G|^)(\s+[^#\/*].*each.*\(.*\))\n(\s*)([^{}\s])/$1\n\t$2$3/img;
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# don't have '{' in the next line when declaring data types
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$source =~ s/^(\s*struct[^()\n]*)\n\s*{\s*$/$1 {/img;
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$source =~ s/^(\s*static\s+struct[^()\n]*)\n\s*{\s*$/$1 {/img;
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$source =~ s/^(\s*union[^()\n]*)\n\s*{\s*$/$1 {/img;
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$source =~ s/^(\s*static\s+union[^()\n]*)\n\s*{\s*$/$1 {/img;
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$source =~ s/^(\s*class.*)\n\s*{\s*$/$1 {/img;
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# a namespace shouldn't look like a function
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$source =~ s/(?:\G|^)(namespace.*)\n\{/$1 {/img;
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# colon goes at the end of a line
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$source =~ s/^(\S*::\S*.*)\n\s*: /$1 : /img;
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# odd indentations from clang-format:
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# six spaces or four spaces after tabs (for continuation strings)
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$source =~ s/(?:\G|^)[ ]{6}/\t/mg;
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$source =~ s/(?:\G|^)(\t*)[ ]{4}"/$1\t"/mg;
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# the next ones are rather awkward
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# they capture multi line #define and #if definded statements
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# that clang-format messes up (where does that 4 space indentation come
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# from?
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# I couldn't figure out how to make it apply to an arbitrary number of
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# intermediate lines, so I hardcoded 0 through 5 lines between the #define
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# or #if defined statements and the end of the multi line statement
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$source =~ s/^(#(?:if |)define.*)\n +([^*].*)$/$1\n\t$2/mg;
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$source =~ s/^(#(?:if |)define.*)((?:\\\n.*){1})\n +([^*].*)$/$1$2\n\t$3/mg;
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$source =~ s/^(#(?:if |)define.*)((?:\\\n.*){2})\n +([^*].*)$/$1$2\n\t$3/mg;
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$source =~ s/^(#(?:if |)define.*)((?:\\\n.*){3})\n +([^*].*)$/$1$2\n\t$3/mg;
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$source =~ s/^(#(?:if |)define.*)((?:\\\n.*){4})\n +([^*].*)$/$1$2\n\t$3/mg;
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$source =~ s/^(#(?:if |)define.*)((?:\\\n.*){5})\n +([^*].*)$/$1$2\n\t$3/mg;
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# don't put line break before the last single term argument of a calculation
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$source =~ s/(?:\G|^)(.*[+-])\n\s*(\S*\;)$/$1 $2/mg;
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$quotedinput = $input;
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$quotedinput =~ s|/|\\/|g;
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open (DIFF, "| diff -u $input - | sed -e 's/--- $quotedinput/--- $quotedinput.old/' | sed -e 's/+++ -/+++ $quotedinput/'");
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print DIFF $source ;
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