rc filetype diff: extract diff parsing from diff-jump
Most diff consumers we've written only care about the "final" state after parsing through a diff. Let's extract the diff parsing part, for reuse in several new commands. In future we should try to use this (or better, a diff-parsing library) for patch-range.pl. We'd add a callback argument that is invoked once perl hunk (or line). Unfortunately I haven't found that library for Perl yet.
This commit is contained in:
Johannes Altmanninger
Maxime Coste
parent
ce7ceb1cf0
commit
36efbf4cbf
127
rc/filetype/diff-parse.pl
Executable file
127
rc/filetype/diff-parse.pl
Executable file
|
|
@ -0,0 +1,127 @@
|
|||
#!/usr/bin/env perl
|
||||
|
||||
use warnings;
|
||||
|
||||
sub quote {
|
||||
my $token = shift;
|
||||
$token =~ s/'/''/g;
|
||||
return "'$token'";
|
||||
}
|
||||
sub fail {
|
||||
my $reason = shift;
|
||||
print "set-register e fail " . quote("diff-parse.pl: $reason");
|
||||
exit;
|
||||
}
|
||||
|
||||
my $begin;
|
||||
my $end;
|
||||
|
||||
while (defined $ARGV[0]) {
|
||||
if ($ARGV[0] eq "--") {
|
||||
shift;
|
||||
last;
|
||||
}
|
||||
if ($ARGV[0] =~ m{^(BEGIN|END)$}) {
|
||||
if (not defined $ARGV[1]) {
|
||||
fail "missing argument to $ARGV[0]";
|
||||
}
|
||||
if ($ARGV[0] eq "BEGIN") {
|
||||
$begin = $ARGV[1];
|
||||
} else {
|
||||
$end = $ARGV[1];
|
||||
}
|
||||
shift, shift;
|
||||
next;
|
||||
}
|
||||
fail "unknown argument: $ARGV[0]";
|
||||
}
|
||||
|
||||
# Inputs
|
||||
our $directory = $ENV{PWD};
|
||||
our $strip;
|
||||
our $version = "+";
|
||||
|
||||
eval $begin if defined $begin;
|
||||
|
||||
# Outputs
|
||||
our $file;
|
||||
our $file_line;
|
||||
our $diff_line_text;
|
||||
|
||||
my $other_version;
|
||||
if ($version eq "+") {
|
||||
$other_version = "-";
|
||||
} else {
|
||||
$other_version = "+";
|
||||
}
|
||||
my $is_recursive_diff = 0;
|
||||
my $state = "header";
|
||||
my $fallback_file;
|
||||
my $other_file;
|
||||
my $other_file_line;
|
||||
|
||||
sub strip {
|
||||
my $is_recursive_diff = shift;
|
||||
my $f = shift;
|
||||
|
||||
my $effective_strip;
|
||||
if (defined $strip) {
|
||||
$effective_strip = $strip;
|
||||
} else {
|
||||
# A "diff -r" or "git diff" adds "diff" lines to
|
||||
# the output. If no such line is present, we have
|
||||
# a plain diff between files (not directories), so
|
||||
# there should be no need to strip the directory.
|
||||
$effective_strip = $is_recursive_diff ? 1 : 0;
|
||||
}
|
||||
|
||||
if ($f !~ m{^/}) {
|
||||
$f =~ s,^([^/]+/+){$effective_strip},, or fail "directory prefix underflow";
|
||||
$f = "$directory/$f";
|
||||
}
|
||||
return $f;
|
||||
}
|
||||
|
||||
while (<STDIN>) {
|
||||
s/^(> )*//g;
|
||||
$diff_line_text = $_;
|
||||
if (m{^diff\b}) {
|
||||
$state = "header";
|
||||
$is_recursive_diff = 1;
|
||||
if (m{^diff -\S* (\S+) (\S+)$}) {
|
||||
$fallback_file = strip $is_recursive_diff, ($version eq "+" ? $2 : $1);
|
||||
}
|
||||
next;
|
||||
}
|
||||
if ($state eq "header") {
|
||||
if (m{^[$version]{3} ([^\t\n]+)}) {
|
||||
$file = strip $is_recursive_diff, $1;
|
||||
next;
|
||||
}
|
||||
if (m{^[$other_version]{3} ([^\t\n]+)}) {
|
||||
$other_file = strip $is_recursive_diff, $1;
|
||||
next;
|
||||
}
|
||||
}
|
||||
if (m{^@@ -(\d+)(?:,\d+)? \+(\d+)(?:,\d+)? @@}) {
|
||||
$state = "contents";
|
||||
$file_line = ($version eq "+" ? $2 : $1) - 1;
|
||||
$other_file_line = ($version eq "+" ? $1 : $2) - 1;
|
||||
} else {
|
||||
my $iscontext = m{^[ ]};
|
||||
if (m{^[ $version]}) {
|
||||
$file_line++ if defined $file_line;
|
||||
}
|
||||
if (m{^[ $other_version]}) {
|
||||
$other_file_line++ if defined $other_file_line;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (not defined $file) {
|
||||
$file = ($fallback_file or $other_file);
|
||||
}
|
||||
if (not defined $file) {
|
||||
fail "missing diff header";
|
||||
}
|
||||
|
||||
eval $end if defined $end;
|
||||
|
|
@ -29,7 +29,7 @@ define-command diff-jump -params .. -docstring %{
|
|||
- jump to the old file instead of the new file
|
||||
-<num> strip <num> leading directory components, like -p<num> in patch(1). Defaults to 1 if there is a 'diff' line (as printed by 'diff -r'), or 0 otherwise.
|
||||
} %{
|
||||
evaluate-commands -draft -save-regs ac| %{
|
||||
evaluate-commands -draft -save-regs c| %{
|
||||
# Save the column because we will move the cursor.
|
||||
set-register c %val{cursor_column}
|
||||
# If there is a "diff" line, we don't need to look further back.
|
||||
|
|
@ -41,120 +41,70 @@ define-command diff-jump -params .. -docstring %{
|
|||
# or content.
|
||||
execute-keys Gk
|
||||
}
|
||||
set-register a %arg{@}
|
||||
set-register | %{
|
||||
[ -n "$kak_reg_a" ] && eval set -- "$kak_quoted_reg_a"
|
||||
cmd=$(column=$kak_reg_c perl -we '
|
||||
sub quote {
|
||||
$SQ = "'\''";
|
||||
$token = shift;
|
||||
$token =~ s/$SQ/$SQ$SQ/g;
|
||||
return "$SQ$token$SQ";
|
||||
diff-parse BEGIN %{
|
||||
my $seen_ddash = 0;
|
||||
foreach (@ARGV) {
|
||||
if ($seen_ddash or !m{^-}) {
|
||||
$directory = $_;
|
||||
} elsif ($_ eq "-") {
|
||||
$version = "-", $other_version = "+";
|
||||
} elsif (m{^-(\d+)$}) {
|
||||
$strip = $1;
|
||||
} elsif ($_ eq "--") {
|
||||
$seen_ddash = 1;
|
||||
} else {
|
||||
fail "unknown option: $_";
|
||||
}
|
||||
sub fail {
|
||||
$reason = shift;
|
||||
print "fail " . quote("diff-jump: $reason");
|
||||
exit;
|
||||
}
|
||||
$version = "+", $other_version = "-";
|
||||
$strip = undef;
|
||||
$directory = $ENV{PWD};
|
||||
$seen_ddash = 0;
|
||||
foreach (@ARGV) {
|
||||
if ($seen_ddash or !m{^-}) {
|
||||
$directory = $_;
|
||||
} elsif ($_ eq "-") {
|
||||
$version = "-", $other_version = "+";
|
||||
} elsif (m{^-(\d+)$}) {
|
||||
$strip = $1;
|
||||
} elsif ($_ eq "--") {
|
||||
$seen_ddash = 1;
|
||||
} else {
|
||||
fail "unknown option: $_";
|
||||
}
|
||||
}
|
||||
$have_diff_line = 0;
|
||||
$state = "header";
|
||||
while (<STDIN>) {
|
||||
s/^(> )*//g;
|
||||
$last_line = $_;
|
||||
if (m{^diff\b}) {
|
||||
$state = "header";
|
||||
$have_diff_line = 1;
|
||||
if (m{^diff -\S* (\S+) (\S+)$}) {
|
||||
$fallback_file = $version eq "+" ? $2 : $1;
|
||||
}
|
||||
next;
|
||||
}
|
||||
if ($state eq "header") {
|
||||
if (m{^[$version]{3} ([^\t\n]+)}) {
|
||||
$file = $1;
|
||||
}
|
||||
} END %exp{
|
||||
my $file_column;
|
||||
if (not defined $file_line) {
|
||||
$file_line = "";
|
||||
$file_column = "";
|
||||
} else {
|
||||
my $diff_column = %reg{c};
|
||||
$file_column = $diff_column - 1; # Account for [ +-] diff prefix.
|
||||
# If the cursor was on a hunk header, go to the section header if possible.
|
||||
if ($diff_line_text =~ m{^(@@ -\d+(?:,\d+)? \+\d+(?:,\d+) @@ )([^\n]*)}) {
|
||||
my $hunk_header_prefix = $1;
|
||||
my $hunk_header_from_userdiff = $2;
|
||||
open FILE, "<", $file or fail "failed to open file: $!: $file";
|
||||
my @lines = <FILE>;
|
||||
for (my $i = $file_line - 1; $i >= 0 and $i < scalar @lines; $i--) {
|
||||
if ($lines[$i] !~ m{\Q$hunk_header_from_userdiff}) {
|
||||
next;
|
||||
}
|
||||
if (m{^[$other_version]{3} ([^\t\n]+)}) {
|
||||
$fallback_file = $1;
|
||||
next;
|
||||
}
|
||||
}
|
||||
if (m{^@@ -(\d+)(?:,\d+)? \+(\d+)(?:,\d+)? @@}) {
|
||||
$state = "contents";
|
||||
$line = ($version eq "+" ? $2 : $1) - 1;
|
||||
} elsif (m{^[ $version]}) {
|
||||
$line++ if defined $line;
|
||||
$file_line = $i + 1;
|
||||
# Re-add 1 because the @@ line does not have a [ +-] diff prefix.
|
||||
$file_column = $diff_column + 1 - length $hunk_header_prefix;
|
||||
last;
|
||||
}
|
||||
}
|
||||
if (not defined $file) {
|
||||
$file = $fallback_file;
|
||||
}
|
||||
if (not defined $file) {
|
||||
fail "missing diff header";
|
||||
}
|
||||
if (not defined $strip) {
|
||||
# A "diff -r" or "git diff" adds "diff" lines to
|
||||
# the output. If no such line is present, we have
|
||||
# a plain diff between files (not directories), so
|
||||
# there should be no need to strip the directory.
|
||||
$strip = $have_diff_line ? 1 : 0;
|
||||
}
|
||||
if ($file !~ m{^/}) {
|
||||
$file =~ s,^([^/]+/+){$strip},, or fail "directory prefix underflow";
|
||||
$file = "$directory/$file";
|
||||
}
|
||||
|
||||
if (defined $line) {
|
||||
$column = $ENV{column} - 1; # Account for [ +-] diff prefix.
|
||||
# If the cursor was on a hunk header, go to the section header if possible.
|
||||
if ($last_line =~ m{^(@@ -\d+(?:,\d+)? \+\d+(?:,\d+) @@ )([^\n]*)}) {
|
||||
$hunk_header_prefix = $1;
|
||||
$hunk_header_from_userdiff = $2;
|
||||
open FILE, "<", $file or fail "failed to open file: $!: $file";
|
||||
@lines = <FILE>;
|
||||
for (my $i = $line - 1; $i >= 0 && $i < scalar @lines; $i--) {
|
||||
if ($lines[$i] !~ m{\Q$hunk_header_from_userdiff}) {
|
||||
next;
|
||||
}
|
||||
$line = $i + 1;
|
||||
# Re-add 1 because the @@ line does not have a [ +-] diff prefix.
|
||||
$column = $column + 1 - length $hunk_header_prefix;
|
||||
last;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
printf "edit -existing -- %s $line $column", quote($file);
|
||||
' -- "$@")
|
||||
echo "set-register c $cmd" >"$kak_command_fifo"
|
||||
}
|
||||
execute-keys <a-|><ret>
|
||||
}
|
||||
printf "set-register c %%s $file_line $file_column\n", quote($file);
|
||||
} -- %arg{@}
|
||||
evaluate-commands -client %val{client} %{
|
||||
evaluate-commands -try-client %opt{jumpclient} %{
|
||||
%reg{c}
|
||||
edit -existing -- %reg{c}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
complete-command diff-jump file
|
||||
|
||||
define-command -hidden diff-parse -params 2.. %{
|
||||
evaluate-commands -save-regs ae %{
|
||||
set-register a %arg{@}
|
||||
set-register e nop
|
||||
set-register | %{
|
||||
eval set -- "$kak_quoted_reg_a"
|
||||
perl "${kak_runtime}/rc/filetype/diff-parse.pl" "$@" >"$kak_command_fifo"
|
||||
}
|
||||
execute-keys <a-|><ret>
|
||||
%reg{e}
|
||||
}
|
||||
}
|
||||
|
||||
§
|
||||
|
||||
define-command \
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user