Root/
Source at commit 6c17a31f1fc515425221067cb3ece599c09dbc5d created 12 years 8 months ago. By Werner Almesberger, atusb, atben: moved from spi/ to ieee802154/; renamed atusb to spi_atusb | |
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1 | #!/usr/bin/perl -w |
2 | # |
3 | # Clean a patch file -- or directory of patch files -- of stealth whitespace. |
4 | # WARNING: this can be a highly destructive operation. Use with caution. |
5 | # |
6 | |
7 | use bytes; |
8 | use File::Basename; |
9 | |
10 | # Default options |
11 | $max_width = 79; |
12 | |
13 | # Clean up space-tab sequences, either by removing spaces or |
14 | # replacing them with tabs. |
15 | sub clean_space_tabs($) |
16 | { |
17 | no bytes; # Tab alignment depends on characters |
18 | |
19 | my($li) = @_; |
20 | my($lo) = ''; |
21 | my $pos = 0; |
22 | my $nsp = 0; |
23 | my($i, $c); |
24 | |
25 | for ($i = 0; $i < length($li); $i++) { |
26 | $c = substr($li, $i, 1); |
27 | if ($c eq "\t") { |
28 | my $npos = ($pos+$nsp+8) & ~7; |
29 | my $ntab = ($npos >> 3) - ($pos >> 3); |
30 | $lo .= "\t" x $ntab; |
31 | $pos = $npos; |
32 | $nsp = 0; |
33 | } elsif ($c eq "\n" || $c eq "\r") { |
34 | $lo .= " " x $nsp; |
35 | $pos += $nsp; |
36 | $nsp = 0; |
37 | $lo .= $c; |
38 | $pos = 0; |
39 | } elsif ($c eq " ") { |
40 | $nsp++; |
41 | } else { |
42 | $lo .= " " x $nsp; |
43 | $pos += $nsp; |
44 | $nsp = 0; |
45 | $lo .= $c; |
46 | $pos++; |
47 | } |
48 | } |
49 | $lo .= " " x $nsp; |
50 | return $lo; |
51 | } |
52 | |
53 | # Compute the visual width of a string |
54 | sub strwidth($) { |
55 | no bytes; # Tab alignment depends on characters |
56 | |
57 | my($li) = @_; |
58 | my($c, $i); |
59 | my $pos = 0; |
60 | my $mlen = 0; |
61 | |
62 | for ($i = 0; $i < length($li); $i++) { |
63 | $c = substr($li,$i,1); |
64 | if ($c eq "\t") { |
65 | $pos = ($pos+8) & ~7; |
66 | } elsif ($c eq "\n") { |
67 | $mlen = $pos if ($pos > $mlen); |
68 | $pos = 0; |
69 | } else { |
70 | $pos++; |
71 | } |
72 | } |
73 | |
74 | $mlen = $pos if ($pos > $mlen); |
75 | return $mlen; |
76 | } |
77 | |
78 | $name = basename($0); |
79 | |
80 | @files = (); |
81 | |
82 | while (defined($a = shift(@ARGV))) { |
83 | if ($a =~ /^-/) { |
84 | if ($a eq '-width' || $a eq '-w') { |
85 | $max_width = shift(@ARGV)+0; |
86 | } else { |
87 | print STDERR "Usage: $name [-width #] files...\n"; |
88 | exit 1; |
89 | } |
90 | } else { |
91 | push(@files, $a); |
92 | } |
93 | } |
94 | |
95 | foreach $f ( @files ) { |
96 | print STDERR "$name: $f\n"; |
97 | |
98 | if (! -f $f) { |
99 | print STDERR "$f: not a file\n"; |
100 | next; |
101 | } |
102 | |
103 | if (!open(FILE, '+<', $f)) { |
104 | print STDERR "$name: Cannot open file: $f: $!\n"; |
105 | next; |
106 | } |
107 | |
108 | binmode FILE; |
109 | |
110 | # First, verify that it is not a binary file; consider any file |
111 | # with a zero byte to be a binary file. Is there any better, or |
112 | # additional, heuristic that should be applied? |
113 | $is_binary = 0; |
114 | |
115 | while (read(FILE, $data, 65536) > 0) { |
116 | if ($data =~ /\0/) { |
117 | $is_binary = 1; |
118 | last; |
119 | } |
120 | } |
121 | |
122 | if ($is_binary) { |
123 | print STDERR "$name: $f: binary file\n"; |
124 | next; |
125 | } |
126 | |
127 | seek(FILE, 0, 0); |
128 | |
129 | $in_bytes = 0; |
130 | $out_bytes = 0; |
131 | $lineno = 0; |
132 | |
133 | @lines = (); |
134 | |
135 | $in_hunk = 0; |
136 | $err = 0; |
137 | |
138 | while ( defined($line = <FILE>) ) { |
139 | $lineno++; |
140 | $in_bytes += length($line); |
141 | |
142 | if (!$in_hunk) { |
143 | if ($line =~ |
144 | /^\@\@\s+\-([0-9]+),([0-9]+)\s+\+([0-9]+),([0-9]+)\s\@\@/) { |
145 | $minus_lines = $2; |
146 | $plus_lines = $4; |
147 | if ($minus_lines || $plus_lines) { |
148 | $in_hunk = 1; |
149 | @hunk_lines = ($line); |
150 | } |
151 | } else { |
152 | push(@lines, $line); |
153 | $out_bytes += length($line); |
154 | } |
155 | } else { |
156 | # We're in a hunk |
157 | |
158 | if ($line =~ /^\+/) { |
159 | $plus_lines--; |
160 | |
161 | $text = substr($line, 1); |
162 | $text =~ s/[ \t\r]*$//; # Remove trailing spaces |
163 | $text = clean_space_tabs($text); |
164 | |
165 | $l_width = strwidth($text); |
166 | if ($max_width && $l_width > $max_width) { |
167 | print STDERR |
168 | "$f:$lineno: adds line exceeds $max_width ", |
169 | "characters ($l_width)\n"; |
170 | } |
171 | |
172 | push(@hunk_lines, '+'.$text); |
173 | } elsif ($line =~ /^\-/) { |
174 | $minus_lines--; |
175 | push(@hunk_lines, $line); |
176 | } elsif ($line =~ /^ /) { |
177 | $plus_lines--; |
178 | $minus_lines--; |
179 | push(@hunk_lines, $line); |
180 | } else { |
181 | print STDERR "$name: $f: malformed patch\n"; |
182 | $err = 1; |
183 | last; |
184 | } |
185 | |
186 | if ($plus_lines < 0 || $minus_lines < 0) { |
187 | print STDERR "$name: $f: malformed patch\n"; |
188 | $err = 1; |
189 | last; |
190 | } elsif ($plus_lines == 0 && $minus_lines == 0) { |
191 | # End of a hunk. Process this hunk. |
192 | my $i; |
193 | my $l; |
194 | my @h = (); |
195 | my $adj = 0; |
196 | my $done = 0; |
197 | |
198 | for ($i = scalar(@hunk_lines)-1; $i > 0; $i--) { |
199 | $l = $hunk_lines[$i]; |
200 | if (!$done && $l eq "+\n") { |
201 | $adj++; # Skip this line |
202 | } elsif ($l =~ /^[ +]/) { |
203 | $done = 1; |
204 | unshift(@h, $l); |
205 | } else { |
206 | unshift(@h, $l); |
207 | } |
208 | } |
209 | |
210 | $l = $hunk_lines[0]; # Hunk header |
211 | undef @hunk_lines; # Free memory |
212 | |
213 | if ($adj) { |
214 | die unless |
215 | ($l =~ /^\@\@\s+\-([0-9]+),([0-9]+)\s+\+([0-9]+),([0-9]+)\s\@\@(.*)$/); |
216 | my $mstart = $1; |
217 | my $mlin = $2; |
218 | my $pstart = $3; |
219 | my $plin = $4; |
220 | my $tail = $5; # doesn't include the final newline |
221 | |
222 | $l = sprintf("@@ -%d,%d +%d,%d @@%s\n", |
223 | $mstart, $mlin, $pstart, $plin-$adj, |
224 | $tail); |
225 | } |
226 | unshift(@h, $l); |
227 | |
228 | # Transfer to the output array |
229 | foreach $l (@h) { |
230 | $out_bytes += length($l); |
231 | push(@lines, $l); |
232 | } |
233 | |
234 | $in_hunk = 0; |
235 | } |
236 | } |
237 | } |
238 | |
239 | if ($in_hunk) { |
240 | print STDERR "$name: $f: malformed patch\n"; |
241 | $err = 1; |
242 | } |
243 | |
244 | if (!$err) { |
245 | if ($in_bytes != $out_bytes) { |
246 | # Only write to the file if changed |
247 | seek(FILE, 0, 0); |
248 | print FILE @lines; |
249 | |
250 | if ( !defined($where = tell(FILE)) || |
251 | !truncate(FILE, $where) ) { |
252 | die "$name: Failed to truncate modified file: $f: $!\n"; |
253 | } |
254 | } |
255 | } |
256 | |
257 | close(FILE); |
258 | } |
259 |
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javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9