Commit | Line | Data |
---|---|---|
86530b38 AT |
1 | package Psh::Builtins::Fc; |
2 | ||
3 | use strict; | |
4 | require Psh; | |
5 | require Psh::Util; | |
6 | require Getopt::Std; | |
7 | ||
8 | =item * C<fc> -s [OLD=NEW] [command] | |
9 | ||
10 | The last command or the last command starting with | |
11 | [command] is re-executed after OLD is subsituted with NEW. | |
12 | ||
13 | =item * C<fc> -p prepend [command] | |
14 | ||
15 | Prepends the text prepend in front of the last command or the | |
16 | last command starting with [command] and re-execute it. | |
17 | ||
18 | =item * C<fc> -l | |
19 | ||
20 | Lists the last 15 commands, newest last | |
21 | ||
22 | =item * C<fc> [-e editor] [range] | |
23 | ||
24 | Edit the last command (or [range] commands) in either [editor], | |
25 | C<$ENV{FCEDIT}>, C<$ENV{EDITOR}> or vi. | |
26 | ||
27 | =cut | |
28 | ||
29 | sub _locate_command { | |
30 | my $command=shift; | |
31 | my $comnum=$#Psh::history-1; # (otherwise we find the fc) | |
32 | if ($command) { | |
33 | my $found; | |
34 | for (my $i=$comnum; $i>=0; $i--) { | |
35 | if (Psh::Util::starts_with($Psh::history[$i],$command)) { | |
36 | $comnum=$i; | |
37 | $found=1; | |
38 | last; | |
39 | } | |
40 | } | |
41 | unless ($found) { | |
42 | Psh::Util::print_error_i18n('bi_fc_notfound'); | |
43 | return undef; | |
44 | } | |
45 | } | |
46 | return $comnum; | |
47 | } | |
48 | ||
49 | sub bi_fc | |
50 | { | |
51 | my $line= shift; | |
52 | local @ARGV = @{shift()}; | |
53 | ||
54 | return (0,undef) unless $#Psh::history; | |
55 | ||
56 | my $opt={}; | |
57 | Getopt::Std::getopts('splre:',$opt); | |
58 | ||
59 | if ($opt->{'l'}) { | |
60 | my $num=@Psh::history; | |
61 | $num=15 if $num>15; | |
62 | for (my $i=@Psh::history-$num; $i<@Psh::history; $i++) { | |
63 | Psh::Util::print_out(' '.sprintf('%3d',$i+1).' '.$Psh::history[$i]."\n"); | |
64 | } | |
65 | } elsif ($opt->{'s'}) { | |
66 | my $subst=''; | |
67 | my $command=''; | |
68 | while ($_=pop(@ARGV)) { | |
69 | if (/\=/) { | |
70 | $subst=$_; | |
71 | last; | |
72 | } | |
73 | $command.=$_; | |
74 | } | |
75 | my $comnum= _locate_command($command); | |
76 | return (0,undef) unless defined $comnum; | |
77 | my $comtext=$Psh::history[$comnum]; | |
78 | if ($subst) { | |
79 | my ($old,$new)=$subst=~/^(.*?[^\\])\=(.*)$/; | |
80 | $comtext=~s/$old/$new/; | |
81 | } | |
82 | Psh::Util::print_out($comtext."\n"); | |
83 | Psh::add_history($comtext); | |
84 | return Psh::evl($comtext); | |
85 | } elsif ($opt->{'p'}) { | |
86 | my $prepend= shift @ARGV; | |
87 | my $command= join ' ',@ARGV; | |
88 | my $comnum= _locate_command($command); | |
89 | return (0,undef) unless defined $comnum; | |
90 | my $comtext="$prepend $Psh::history[$comnum]"; | |
91 | Psh::Util::print_out($comtext."\n"); | |
92 | Psh::add_history($comtext); | |
93 | return Psh::evl($comtext); | |
94 | } else { | |
95 | if (!$Psh::interactive) { | |
96 | Psh::Util::print_error("fc: not running interactively - cancelled\n"); | |
97 | return (0,undef); | |
98 | } | |
99 | my $file= Psh::OS::tmpnam(); | |
100 | my $editor= Psh::OS::get_editor($opt->{e} || $ENV{FCEDIT}); | |
101 | my $from=my $to=$#Psh::history; | |
102 | if ($ARGV[0]=~/^\s*(\d+)-(\d+)/) { | |
103 | ($from,$to)=($1,$2); | |
104 | } elsif ($ARGV[0]=~/^\s*(\d+)\s*$/) { | |
105 | ($from,$to)=($1,$1); | |
106 | } | |
107 | if ($from<0 or $to<0 or $from>$#Psh::history or | |
108 | $to>$#Psh::history) { | |
109 | Psh::Util::print_error("fc: specified range not in history\n"); | |
110 | return (0,undef); | |
111 | } | |
112 | ||
113 | if (open(FILE,"> $file")) { | |
114 | for (my $i=$from; $i<=$to; $i++) { | |
115 | print FILE $Psh::history[$i-1]."\n"; | |
116 | } | |
117 | close(FILE); | |
118 | } | |
119 | system("$editor $file"); | |
120 | Psh::process_file($file); | |
121 | eval { | |
122 | unlink($file); | |
123 | }; | |
124 | } | |
125 | return (1,undef); | |
126 | } | |
127 | ||
128 | ||
129 | ||
130 | 1; |