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+#!/usr/bin/perl -w
+# -*- Mode: perl; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+
+# Perl script to create a ChangeLog entry with names of files
+# and functions from a svn diff.
+#
+# Darin Adler <darin@bentspoon.com>, started 20 April 2000
+# Java support added by Maciej Stachowiak <mjs@eazel.com>
+# Adapted for subversion by Thomas Hellstrom <unichrome-at-shipmail-dot-org>
+# last updated 11 May 2005
+#
+# (Someone put a license in here, like maybe GPL.)
+#
+# TODO:
+# For new files, just say "New file" instead of listing
+# function names.
+# List functions that have been removed too.
+# Decide what a good logical order is for the changed files
+# other than a normal text "sort" (top level first?)
+# (group directories?) (.h before .c?)
+# Leave a diff file behind if asked, but in unified format.
+# Handle C++ and yacc source files too (other languages?).
+# Help merge when there are ChangeLog conflicts or if there's
+# already a partly written ChangeLog entry.
+# Add command line option to put the ChangeLog into a separate
+# file or just spew it out stdout.
+# Figure out how to allow -z options from .cvsrc to work without
+# letting other bad options work. Currently the -f disables
+# everything from the .cvsrc.
+# Add CVS version numbers for each file too (can't do that until
+# the changes are checked in, though).
+# Work around diff stupidity where deleting a function that starts
+# with a comment makes diff think that the following function
+# has been changed (if the following function starts with a comment
+# with the same first line, such as /**)
+# Work around diff stupidity where deleting an entire function and
+# the blank lines before it makes diff think you've changed the
+# previous function.
+
+use diagnostics;
+use strict;
+
+use English;
+use Text::Wrap;
+
+# For each file, build a list of modified lines.
+# Use line numbers from the "after" side of each diff.
+print STDERR " Running svn diff to find changes.\n";
+my %changed_line_ranges;
+my $file;
+open DIFF, "svn diff --diff-cmd diff -x -N |" or die "The svn diff failed: $OS_ERROR.\n";
+while (<DIFF>)
+ {
+ $file = $1 if /^Index: (\S+)$/;
+ if (defined $file
+ and $file ne "ChangeLog"
+ and (/^\d+(,\d+)?[acd](\d+)(,(\d+))?/ or /^Binary files/) )
+ {
+ push @{$changed_line_ranges{$file}}, [ $2, $4 || $2 ];
+ }
+ }
+close DIFF;
+if (!%changed_line_ranges)
+ {
+ print STDERR " No changes found.\n";
+ exit;
+ }
+
+# For each ".c" file, convert line range to function list.
+print STDERR " Extracting affected function names from C source files.\n";
+my %function_lists;
+foreach my $file (keys %changed_line_ranges)
+ {
+ # An empty function list still indicates that something changed.
+ $function_lists{$file} = "";
+
+ # Only look for function names in .c files.
+ next unless $file =~ /\.(c|java)/;
+
+ # Find all the functions in the file.
+ open SOURCE, $file or next;
+ my @function_ranges = get_function_line_ranges(\*SOURCE, $file);
+ close SOURCE;
+
+ # Find all the modified functions.
+ my @functions;
+ my %saw_function;
+ my @change_ranges = (@{$changed_line_ranges{$file}}, []);
+ my @change_range = (0, 0);
+ FUNCTION: foreach my $function_range_ref (@function_ranges)
+ {
+ my @function_range = @$function_range_ref;
+
+ # Advance to successive change ranges.
+ for (;; @change_range = @{shift @change_ranges})
+ {
+ last FUNCTION unless @change_range;
+
+ # If past this function, move on to the next one.
+ next FUNCTION if $change_range[0] > $function_range[1];
+
+ # If an overlap with this function range, record the function name.
+ if ($change_range[1] >= $function_range[0]
+ and $change_range[0] <= $function_range[1])
+ {
+ if (!$saw_function{$function_range[2]})
+ {
+ $saw_function{$function_range[2]} = 1;
+ push @functions, $function_range[2];
+ }
+ next FUNCTION;
+ }
+ }
+ }
+
+ # Format the list of functions now.
+ $function_lists{$file} = " (" . join("), (", @functions) . "):" if @functions;
+ }
+
+# Get some pieces of the ChangeLog we are about to write.
+my $date = sprintf "%d-%02d-%02d",
+ 1900 + (localtime $BASETIME)[5], # year
+ 1 + (localtime $BASETIME)[4], # month
+ (localtime $BASETIME)[3]; # day within month
+my $name = $ENV{CHANGE_LOG_NAME}
+ || $ENV{REAL_NAME}
+ || (getpwuid $REAL_USER_ID)[6]
+ || "set REAL_NAME environment variable";
+my $email_address = $ENV{CHANGE_LOG_EMAIL_ADDRESS}
+ || $ENV{EMAIL_ADDRESS}
+ || "set EMAIL_ADDRESS environment variable";
+
+# Find the change logs.
+my %has_log;
+my %files;
+foreach my $file (sort keys %function_lists)
+ {
+ my $prefix = $file;
+ my $has_log = 0;
+ while ($prefix)
+ {
+ $prefix =~ s-/[^/]+/?$-/- or $prefix = "";
+ $has_log = $has_log{$prefix};
+ if (!defined $has_log)
+ {
+ $has_log = -f "${prefix}ChangeLog";
+ $has_log{$prefix} = $has_log;
+ }
+ last if $has_log;
+ }
+ if (!$has_log)
+ {
+ print STDERR "No ChangeLog found for $file.\n";
+ }
+ else
+ {
+ push @{$files{$prefix}}, $file;
+ }
+ }
+
+# Get the latest ChangeLog files from svn.
+my $logs = "";
+foreach my $prefix (sort keys %files)
+ {
+ $logs .= " ${prefix}ChangeLog";
+ }
+if ($logs)
+ {
+ print STDERR " Updating ChangeLog files from svn repository.\n";
+ open ERRORS, "svn update$logs |" or die "The svn update of ChangeLog files failed: $OS_ERROR.\n";
+ print STDERR " $ARG" while <ERRORS>;
+ close ERRORS;
+ }
+
+
+# Write out a new ChangeLog file.
+foreach my $prefix (sort keys %files)
+ {
+ print STDERR " Editing the ${prefix}ChangeLog file.\n";
+ open OLD_CHANGE_LOG, "${prefix}ChangeLog" or die "Could not open ${prefix}ChangeLog file: $OS_ERROR.\n";
+ # It's less efficient to read the whole thing into memory than it would be
+ # to read it while we prepend to it later, but I like doing this part first.
+ my @old_change_log = <OLD_CHANGE_LOG>;
+ close OLD_CHANGE_LOG;
+ open CHANGE_LOG, "> ${prefix}ChangeLog" or die "Could not write ${prefix}ChangeLog\n.";
+ print CHANGE_LOG "$date $name <$email_address>\n\n";
+ print CHANGE_LOG "\treviewed by: <delete if not using a buddy>\n\n";
+ foreach my $file (sort @{$files{$prefix}})
+ {
+ my $file_stem = substr $file, length $prefix;
+ my $lines = wrap("\t", "\t", "XX$file_stem:$function_lists{$file}");
+ $lines =~ s/^\tXX/\t* /;
+ print CHANGE_LOG "$lines\n";
+ }
+ print CHANGE_LOG "\n", @old_change_log;
+ close CHANGE_LOG;
+ print STDERR " Done editing ${prefix}ChangeLog.\n";
+ }
+
+# Done.
+exit;
+
+sub get_function_line_ranges
+ {
+ my ($file_handle, $file_name) = @_;
+
+ if ($file_name =~ /\.c$/) {
+ return get_function_line_ranges_for_c ($file_handle, $file_name);
+ } elsif ($file_name =~ /\.java$/) {
+ return get_function_line_ranges_for_java ($file_handle, $file_name);
+ }
+ return ();
+ }
+
+# Read a file and get all the line ranges of the things that look like C functions.
+# A function name is the last word before an open parenthesis before the outer
+# level open brace. A function starts at the first character after the last close
+# brace or semicolon before the function name and ends at the close brace.
+# Comment handling is simple-minded but will work for all but pathological cases.
+#
+# Result is a list of triples: [ start_line, end_line, function_name ].
+
+sub get_function_line_ranges_for_c
+ {
+ my ($file_handle, $file_name) = @_;
+
+ my @ranges;
+
+ my $in_comment = 0;
+ my $in_macro = 0;
+ my $in_parentheses = 0;
+ my $in_braces = 0;
+
+ my $word = "";
+
+ my $potential_start = 0;
+ my $potential_name = "";
+
+ my $start = 0;
+ my $name = "";
+
+ while (<$file_handle>)
+ {
+ # Handle continued multi-line comment.
+ if ($in_comment)
+ {
+ next unless s-.*\*/--;
+ $in_comment = 0;
+ }
+
+ # Handle continued macro.
+ if ($in_macro)
+ {
+ $in_macro = 0 unless /\\$/;
+ next;
+ }
+
+ # Handle start of macro (or any preprocessor directive).
+ if (/^\s*\#/)
+ {
+ $in_macro = 1 if /^([^\\]|\\.)*\\$/;
+ next;
+ }
+
+ # Handle comments and quoted text.
+ while (m-(/\*|//|\'|\")-) # \' and \" keep emacs perl mode happy
+ {
+ my $match = $1;
+ if ($match eq "/*")
+ {
+ if (!s-/\*.*?\*/--)
+ {
+ s-/\*.*--;
+ $in_comment = 1;
+ }
+ }
+ elsif ($match eq "//")
+ {
+ s-//.*--;
+ }
+ else # ' or "
+ {
+ if (!s-$match([^\\]|\\.)*?$match--)
+ {
+ warn "mismatched quotes at line $INPUT_LINE_NUMBER in $file_name\n";
+ s-$match.*--;
+ }
+ }
+ }
+
+ # Find function names.
+ while (m-(\w+|[(){};])-g)
+ {
+ # Open parenthesis.
+ if ($1 eq "(")
+ {
+ $potential_name = $word unless $in_parentheses;
+ $in_parentheses++;
+ next;
+ }
+
+ # Close parenthesis.
+ if ($1 eq ")")
+ {
+ $in_parentheses--;
+ next;
+ }
+
+ # Open brace.
+ if ($1 eq "{")
+ {
+ # Promote potiential name to real function name at the
+ # start of the outer level set of braces (function body?).
+ if (!$in_braces and $potential_start)
+ {
+ $start = $potential_start;
+ $name = $potential_name;
+ }
+
+ $in_braces++;
+ next;
+ }
+
+ # Close brace.
+ if ($1 eq "}")
+ {
+ $in_braces--;
+
+ # End of an outer level set of braces.
+ # This could be a function body.
+ if (!$in_braces and $name)
+ {
+ push @ranges, [ $start, $INPUT_LINE_NUMBER, $name ];
+ $name = "";
+ }
+
+ $potential_start = 0;
+ $potential_name = "";
+ next;
+ }
+
+ # Semicolon.
+ if ($1 eq ";")
+ {
+ $potential_start = 0;
+ $potential_name = "";
+ next;
+ }
+
+ # Word.
+ $word = $1;
+ if (!$in_parentheses)
+ {
+ $potential_start = 0;
+ $potential_name = "";
+ }
+ if (!$potential_start)
+ {
+ $potential_start = $INPUT_LINE_NUMBER;
+ $potential_name = "";
+ }
+ }
+ }
+
+ warn "mismatched braces in $file_name\n" if $in_braces;
+ warn "mismatched parentheses in $file_name\n" if $in_parentheses;
+
+ return @ranges;
+ }
+
+
+
+# Read a file and get all the line ranges of the things that look like Java
+# classes, interfaces and methods.
+#
+# A class or interface name is the word that immediately follows
+# `class' or `interface' when followed by an open curly brace and not
+# a semicolon. It can appear at the top level, or inside another class
+# or interface block, but not inside a function block
+#
+# A class or interface starts at the first character after the first close
+# brace or after the function name and ends at the close brace.
+#
+# A function name is the last word before an open parenthesis before
+# an open brace rather than a semicolon. It can appear at top level or
+# inside a class or interface block, but not inside a function block.
+#
+# A function starts at the first character after the first close
+# brace or after the function name and ends at the close brace.
+#
+# Comment handling is simple-minded but will work for all but pathological cases.
+#
+# Result is a list of triples: [ start_line, end_line, function_name ].
+
+sub get_function_line_ranges_for_java
+ {
+ my ($file_handle, $file_name) = @_;
+
+ my @current_scopes;
+
+ my @ranges;
+
+ my $in_comment = 0;
+ my $in_macro = 0;
+ my $in_parentheses = 0;
+ my $in_braces = 0;
+ my $in_non_block_braces = 0;
+ my $class_or_interface_just_seen = 0;
+
+ my $word = "";
+
+ my $potential_start = 0;
+ my $potential_name = "";
+ my $potential_name_is_class_or_interface = 0;
+
+ my $start = 0;
+ my $name = "";
+ my $current_name_is_class_or_interface = 0;
+
+ while (<$file_handle>)
+ {
+ # Handle continued multi-line comment.
+ if ($in_comment)
+ {
+ next unless s-.*\*/--;
+ $in_comment = 0;
+ }
+
+ # Handle continued macro.
+ if ($in_macro)
+ {
+ $in_macro = 0 unless /\\$/;
+ next;
+ }
+
+ # Handle start of macro (or any preprocessor directive).
+ if (/^\s*\#/)
+ {
+ $in_macro = 1 if /^([^\\]|\\.)*\\$/;
+ next;
+ }
+
+ # Handle comments and quoted text.
+ while (m-(/\*|//|\'|\")-) # \' and \" keep emacs perl mode happy
+ {
+ my $match = $1;
+ if ($match eq "/*")
+ {
+ if (!s-/\*.*?\*/--)
+ {
+ s-/\*.*--;
+ $in_comment = 1;
+ }
+ }
+ elsif ($match eq "//")
+ {
+ s-//.*--;
+ }
+ else # ' or "
+ {
+ if (!s-$match([^\\]|\\.)*?$match--)
+ {
+ warn "mismatched quotes at line $INPUT_LINE_NUMBER in $file_name\n";
+ s-$match.*--;
+ }
+ }
+ }
+
+ # Find function names.
+ while (m-(\w+|[(){};])-g)
+ {
+ # Open parenthesis.
+ if ($1 eq "(")
+ {
+ if (!$in_parentheses) {
+ $potential_name = $word;
+ $potential_name_is_class_or_interface = 0;
+ }
+ $in_parentheses++;
+ next;
+ }
+
+ # Close parenthesis.
+ if ($1 eq ")")
+ {
+ $in_parentheses--;
+ next;
+ }
+
+ # Open brace.
+ if ($1 eq "{")
+ {
+ # Promote potiential name to real function name at the
+ # start of the outer level set of braces (function/class/interface body?).
+ if (!$in_non_block_braces
+ and (!$in_braces or $current_name_is_class_or_interface)
+ and $potential_start)
+ {
+ if ($name)
+ {
+ push @ranges, [ $start, ($INPUT_LINE_NUMBER - 1),
+ join ('.', @current_scopes) ];
+ }
+
+
+ $current_name_is_class_or_interface = $potential_name_is_class_or_interface;
+
+ $start = $potential_start;
+ $name = $potential_name;
+
+ push (@current_scopes, $name);
+ } else {
+ $in_non_block_braces++;
+ }
+
+ $potential_name = "";
+ $potential_start = 0;
+
+ $in_braces++;
+ next;
+ }
+
+ # Close brace.
+ if ($1 eq "}")
+ {
+ $in_braces--;
+
+ # End of an outer level set of braces.
+ # This could be a function body.
+ if (!$in_non_block_braces)
+ {
+ if ($name)
+ {
+ push @ranges, [ $start, $INPUT_LINE_NUMBER,
+ join ('.', @current_scopes) ];
+
+ pop (@current_scopes);
+
+ if (@current_scopes)
+ {
+ $current_name_is_class_or_interface = 1;
+
+ $start = $INPUT_LINE_NUMBER + 1;
+ $name = $current_scopes[$#current_scopes-1];
+ }
+ else
+ {
+ $current_name_is_class_or_interface = 0;
+ $start = 0;
+ $name = "";
+ }
+ }
+ }
+ else
+ {
+ $in_non_block_braces-- if $in_non_block_braces;
+ }
+
+ $potential_start = 0;
+ $potential_name = "";
+ next;
+ }
+
+ # Semicolon.
+ if ($1 eq ";")
+ {
+ $potential_start = 0;
+ $potential_name = "";
+ next;
+ }
+
+ if ($1 eq "class" or $1 eq "interface")
+ {
+ $class_or_interface_just_seen = 1;
+ next;
+ }
+
+ # Word.
+ $word = $1;
+ if (!$in_parentheses)
+ {
+ if ($class_or_interface_just_seen) {
+ $potential_name = $word;
+ $potential_start = $INPUT_LINE_NUMBER;
+ $class_or_interface_just_seen = 0;
+ $potential_name_is_class_or_interface = 1;
+ next;
+ }
+ }
+ if (!$potential_start)
+ {
+ $potential_start = $INPUT_LINE_NUMBER;
+ $potential_name = "";
+ }
+ $class_or_interface_just_seen = 0;
+ }
+ }
+
+ warn "mismatched braces in $file_name\n" if $in_braces;
+ warn "mismatched parentheses in $file_name\n" if $in_parentheses;
+
+ return @ranges;
+ }
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-16 07:34:02 +0000