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dd9550a4 |
1 | #!/usr/bin/perl |
2 | |
14655604 |
3 | # $Id: auto-dia.pl,v 1.7 2003-04-02 01:45:45 kycl4rk Exp $ |
dd9550a4 |
4 | |
5 | =head1 NAME |
6 | |
7 | auto-dia.pl - Automatically create a diagram from a database schema |
8 | |
9 | =head1 SYNOPSIS |
10 | |
11 | ./auto-dia.pl -d|--db=db_parser [options] schema.sql |
12 | |
13 | Options: |
14 | |
14655604 |
15 | -o|--output Output file name (default STDOUT) |
16 | -i|--image Output image type (default PNG) |
17 | -t|--title Title to give schema |
18 | -c|--cols Number of columns |
19 | -n|--no-lines Don't draw lines |
20 | -f|--font-size "small," "medium," "large," or "huge" |
21 | (default "medium") |
22 | --color Add colors |
23 | |
24 | --natural-join Perform natural joins |
25 | --natural-join-pk-only Perform natural joins from primary keys only |
26 | -s|--skip Fields to skip in natural joins |
dd9550a4 |
27 | |
28 | =head1 DESCRIPTION |
29 | |
30 | This script will create a picture of your schema. Only the database |
aa0a19b9 |
31 | driver argument (for SQL::Translator) is required. If no output file |
32 | name is given, then image will be printed to STDOUT, so you should |
33 | redirect the output into a file. |
dd9550a4 |
34 | |
14655604 |
35 | The default action is to assume the presence of foreign key |
36 | relationships defined via "REFERNCES" or "FOREIGN KEY" constraints on |
37 | the tables. If you are parsing the schema of a file that does not |
38 | have these, you will find the natural join options helpful. With |
39 | natural joins, like-named fields will be considered foreign keys. |
40 | This can prove too permissive, however, as you probably don't want a |
41 | field called "name" to be considered a foreign key, so you could |
42 | include it in the "skip" option, and all fields called "name" will be |
43 | excluded from natural joins. A more efficient method, however, might |
44 | be to simply deduce the foriegn keys from primary keys to other fields |
45 | named the same in other tables. Use the "natural-join-pk-only" option |
46 | to acheive this. |
47 | |
dd9550a4 |
48 | =cut |
49 | |
50 | use strict; |
51 | use Getopt::Long; |
52 | use GD; |
53 | use Pod::Usage; |
54 | use SQL::Translator; |
55 | |
14655604 |
56 | my $VERSION = (qw$Revision: 1.7 $)[-1]; |
22cb6863 |
57 | |
58 | use constant VALID_FONT_SIZE => { |
59 | small => 1, |
60 | medium => 1, |
61 | large => 1, |
62 | huge => 1, |
63 | }; |
dd9550a4 |
64 | |
aa0a19b9 |
65 | # |
66 | # Get arguments. |
67 | # |
14655604 |
68 | my ( |
69 | $out_file, $image_type, $db_driver, $title, $no_columns, |
70 | $no_lines, $font_size, $add_color, |
71 | $natural_join, $join_pk_only, $skip_fields |
72 | ); |
73 | |
dd9550a4 |
74 | GetOptions( |
14655604 |
75 | 'd|db=s' => \$db_driver, |
76 | 'o|output:s' => \$out_file, |
77 | 'i|image:s' => \$image_type, |
78 | 't|title:s' => \$title, |
79 | 'c|columns:i' => \$no_columns, |
80 | 'n|no-lines' => \$no_lines, |
81 | 'f|font-size:s' => \$font_size, |
82 | 'color' => \$add_color, |
83 | 'natural-join' => \$natural_join, |
84 | 'natural-join-pk-only' => \$join_pk_only, |
85 | 's|skip:s' => \$skip_fields, |
dd9550a4 |
86 | ) or die pod2usage; |
87 | my $file = shift @ARGV or pod2usage( -message => 'No input file' ); |
88 | |
89 | pod2usage( -message => "No db driver specified" ) unless $db_driver; |
14655604 |
90 | $image_type = $image_type ? lc $image_type : 'png'; |
91 | $title ||= $file; |
92 | $font_size = 'medium' unless VALID_FONT_SIZE->{ $font_size }; |
93 | my %skip = map { $_, 1 } split ( /,/, $skip_fields ); |
94 | $natural_join ||= $join_pk_only; |
dd9550a4 |
95 | |
aa0a19b9 |
96 | # |
97 | # Parse file. |
98 | # |
dd9550a4 |
99 | my $t = SQL::Translator->new( parser => $db_driver, producer => 'Raw' ); |
100 | my $data = $t->translate( $file ) or die $t->error; |
dd9550a4 |
101 | |
aa0a19b9 |
102 | # |
103 | # Layout the image. |
104 | # |
22cb6863 |
105 | my $font = |
106 | $font_size eq 'small' ? gdTinyFont : |
107 | $font_size eq 'medium' ? gdSmallFont : |
108 | $font_size eq 'large' ? gdLargeFont : gdGiantFont; |
dd9550a4 |
109 | my $no_tables = scalar keys %$data; |
110 | $no_columns ||= sprintf( "%.0f", sqrt( $no_tables ) + .5 ); |
111 | my $no_per_col = sprintf( "%.0f", $no_tables/$no_columns + .5 ); |
dd9550a4 |
112 | |
7256996b |
113 | my @shapes; |
114 | my ( $max_x, $max_y ); # the furthest x and y used |
115 | my $orig_y = 40; # used to reset y for each column |
116 | my ( $x, $y ) = (20, $orig_y); # where to start |
117 | my $cur_col = 1; # the current column |
118 | my $no_this_col = 0; # number of tables in current column |
119 | my $this_col_x = $x; # current column's x |
120 | my $gutter = 30; # distance b/w columns |
14655604 |
121 | my %nj_registry; # for locations of fields for natural joins |
122 | my @fk_registry; # for locations of fields for foreign keys |
7256996b |
123 | my %table_x; # for max x of each table |
124 | my $field_no; # counter to give distinct no. to each field |
b18a0413 |
125 | my %legend; |
dd9550a4 |
126 | |
127 | for my $table ( |
128 | map { $_->[1] } |
129 | sort { $a->[0] <=> $b->[0] } |
130 | map { [ $_->{'order'}, $_ ] } |
131 | values %$data |
132 | ) { |
133 | my $table_name = $table->{'table_name'}; |
134 | my $top = $y; |
aa0a19b9 |
135 | push @shapes, [ 'string', $font, $this_col_x, $y, $table_name, 'black' ]; |
dd9550a4 |
136 | |
137 | $y += $font->height + 2; |
138 | my $below_table_name = $y; |
139 | $y += 2; |
140 | my $this_max_x = $this_col_x + ($font->width * length($table_name)); |
141 | |
142 | my @fields = |
143 | map { $_->[1] } |
144 | sort { $a->[0] <=> $b->[0] } |
145 | map { [ $_->{'order'}, $_ ] } |
146 | values %{ $table->{'fields'} }; |
147 | |
b18a0413 |
148 | my ( %pk, %unique ); |
dd9550a4 |
149 | for my $index ( @{ $table->{'indices'} || [] } ) { |
dd9550a4 |
150 | my @fields = @{ $index->{'fields'} || [] } or next; |
b18a0413 |
151 | if ( $index->{'type'} eq 'primary_key' ) { |
152 | $pk{ $_ } = 1 for @fields; |
153 | } |
154 | elsif ( $index->{'type'} eq 'unique' ) { |
155 | $unique{ $_ } = 1 for @fields; |
156 | } |
dd9550a4 |
157 | } |
158 | |
159 | my ( @fld_desc, $max_name ); |
160 | for my $f ( @fields ) { |
b18a0413 |
161 | my $name = $f->{'name'} or next; |
162 | my $is_pk = $pk{ $name }; |
163 | my $is_unique = $unique{ $name }; |
164 | if ( $is_pk ) { |
165 | $name .= ' *'; |
166 | $legend{'Primary key'} = '*'; |
167 | } |
168 | elsif ( $is_unique ) { |
169 | $name .= ' [U]'; |
170 | $legend{'Unique constraint'} = '[U]'; |
171 | } |
dd9550a4 |
172 | |
173 | my $size = @{ $f->{'size'} || [] } |
174 | ? '(' . join( ',', @{ $f->{'size'} } ) . ')' |
175 | : ''; |
176 | my $desc = join( ' ', map { $_ || () } $f->{'data_type'}, $size ); |
177 | |
178 | my $nlen = length $name; |
179 | $max_name = $nlen if $nlen > $max_name; |
7256996b |
180 | push @fld_desc, [ $name, $desc, $f->{'name'}, $is_pk ]; |
dd9550a4 |
181 | } |
182 | |
183 | $max_name += 4; |
184 | for my $fld_desc ( @fld_desc ) { |
7256996b |
185 | my ( $name, $desc, $orig_name, $is_pk ) = @$fld_desc; |
dd9550a4 |
186 | my $diff = $max_name - length $name; |
187 | $name .= ' ' x $diff; |
188 | $desc = $name . $desc; |
189 | |
aa0a19b9 |
190 | push @shapes, [ 'string', $font, $this_col_x, $y, $desc, 'black' ]; |
dd9550a4 |
191 | $y += $font->height + 2; |
192 | my $length = $this_col_x + ( $font->width * length( $desc ) ); |
193 | $this_max_x = $length if $length > $this_max_x; |
aa0a19b9 |
194 | |
14655604 |
195 | my $constraints = $table->{'fields'}{ $orig_name }{'constraints'}; |
196 | |
197 | if ( $natural_join && !$skip{ $orig_name } ) { |
198 | push @{ $nj_registry{ $orig_name } }, $table_name; |
aa0a19b9 |
199 | } |
14655604 |
200 | elsif ( @{ $constraints || [] } ) { |
201 | for my $constraint ( @$constraints ) { |
202 | next unless $constraint->{'type'} eq 'foreign_key'; |
203 | for my $fk_field ( |
204 | @{ $constraint->{'reference_fields'} || [] } |
205 | ) { |
206 | push @fk_registry, [ |
207 | [ $constraint->{'reference_table'}, $fk_field ], |
208 | [ $table_name, $orig_name ], |
209 | ]; |
210 | } |
211 | } |
212 | } |
213 | |
214 | my $y_link = $y - $font->height * .75; |
215 | $table->{'fields'}{ $orig_name }{'coords'} = { |
216 | left => [ $this_col_x - 2, $y_link ], |
217 | right => [ $length, $y_link ], |
218 | table => $table_name, |
219 | field_no => ++$field_no, |
220 | is_pk => $is_pk, |
221 | }; |
dd9550a4 |
222 | } |
223 | |
224 | $this_max_x += 5; |
aa0a19b9 |
225 | $table_x{ $table_name } = $this_max_x + 5; |
dd9550a4 |
226 | push @shapes, [ 'line', $this_col_x - 5, $below_table_name, |
aa0a19b9 |
227 | $this_max_x, $below_table_name, 'black' ]; |
d21faa48 |
228 | my @bounds = ( $this_col_x - 5, $top - 5, $this_max_x, $y + 5 ); |
229 | if ( $add_color ) { |
230 | unshift @shapes, [ |
231 | 'filledRectangle', |
232 | $bounds[0], $bounds[1], |
233 | $this_max_x, $below_table_name, |
234 | 'khaki' |
235 | ]; |
236 | unshift @shapes, [ 'filledRectangle', @bounds, 'white' ]; |
237 | } |
238 | push @shapes, [ 'rectangle', @bounds, 'black' ]; |
dd9550a4 |
239 | $max_x = $this_max_x if $this_max_x > $max_x; |
240 | $y += 25; |
241 | |
7256996b |
242 | if ( ++$no_this_col == $no_per_col ) { # if we've filled up this column |
243 | $cur_col++; # up the column number |
244 | $no_this_col = 0; # reset the number of tables |
245 | $max_x += $gutter; # push the x over for next column |
246 | $this_col_x = $max_x; # remember the max x for this column |
247 | $max_y = $y if $y > $max_y; # note the max y |
248 | $y = $orig_y; # reset the y for next column |
dd9550a4 |
249 | } |
250 | } |
251 | |
252 | # |
aa0a19b9 |
253 | # Connect the lines. |
254 | # |
255 | my %horz_taken; |
256 | my %done; |
257 | unless ( $no_lines ) { |
14655604 |
258 | my @position_bunches; |
259 | |
260 | if ( $natural_join ) { |
261 | for my $field_name ( keys %nj_registry ) { |
262 | my @positions; |
263 | my @table_names = @{ $nj_registry{ $field_name } || [] } or next; |
264 | next if scalar @table_names == 1; |
265 | |
266 | for my $table_name ( @table_names ) { |
267 | push @positions, |
268 | $data->{ $table_name }{'fields'}{ $field_name }{'coords'}; |
269 | } |
270 | |
271 | push @position_bunches, [ @positions ]; |
272 | } |
273 | } |
274 | else { |
275 | for my $pair ( @fk_registry ) { |
276 | my $c1 = |
277 | $data->{ $pair->[0][0] }{'fields'}{ $pair->[0][1] }{'coords'}; |
278 | my $c2 = |
279 | $data->{ $pair->[1][0] }{'fields'}{ $pair->[1][1] }{'coords'}; |
280 | next unless %{ $c1 || {} } && %{ $c1 || {} }; |
281 | push @position_bunches, [ $c1, $c2 ]; |
282 | } |
283 | } |
284 | |
285 | for my $bunch ( @position_bunches ) { |
286 | my @positions = @$bunch; |
aa0a19b9 |
287 | |
288 | for my $i ( 0 .. $#positions ) { |
289 | my $pos1 = $positions[ $i ]; |
290 | my ( $ax, $ay ) = @{ $pos1->{'left'} }; |
291 | my ( $bx, $by ) = @{ $pos1->{'right'} }; |
292 | my $table1 = $pos1->{'table'}; |
293 | my $fno1 = $pos1->{'field_no'}; |
7256996b |
294 | my $is_pk = $pos1->{'is_pk'}; |
295 | next if $join_pk_only and !$is_pk; |
aa0a19b9 |
296 | |
7256996b |
297 | for my $j ( 0 .. $#positions ) { |
aa0a19b9 |
298 | my $pos2 = $positions[ $j ]; |
299 | my ( $cx, $cy ) = @{ $pos2->{'left'} }; |
300 | my ( $dx, $dy ) = @{ $pos2->{'right'} }; |
301 | my $table2 = $pos2->{'table'}; |
302 | my $fno2 = $pos2->{'field_no'}; |
303 | next if $done{ $fno1 }{ $fno2 }; |
7256996b |
304 | next if $fno1 == $fno2; |
aa0a19b9 |
305 | |
306 | my @distances = (); |
307 | push @distances, [ |
308 | abs ( $ax - $cx ) + abs ( $ay - $cy ), |
309 | [ $ax, $ay, $cx, $cy ], |
310 | [ 'left', 'left' ] |
311 | ]; |
312 | push @distances, [ |
313 | abs ( $ax - $dx ) + abs ( $ay - $dy ), |
314 | [ $ax, $ay, $dx, $dy ], |
315 | [ 'left', 'right' ], |
316 | ]; |
317 | push @distances, [ |
318 | abs ( $bx - $cx ) + abs ( $by - $cy ), |
319 | [ $bx, $by, $cx, $cy ], |
320 | [ 'right', 'left' ], |
321 | ]; |
322 | push @distances, [ |
323 | abs ( $bx - $dx ) + abs ( $by - $dy ), |
324 | [ $bx, $by, $dx, $dy ], |
325 | [ 'right', 'right' ], |
326 | ]; |
327 | @distances = sort { $a->[0] <=> $b->[0] } @distances; |
328 | my $shortest = $distances[0]; |
329 | my ( $x1, $y1, $x2, $y2 ) = @{ $shortest->[1] }; |
330 | my ( $side1, $side2 ) = @{ $shortest->[2] }; |
331 | my ( $start, $end ); |
7256996b |
332 | my $offset = 9; |
aa0a19b9 |
333 | my $col1_right = $table_x{ $table1 }; |
334 | my $col2_right = $table_x{ $table2 }; |
335 | |
336 | my $diff = 0; |
337 | if ( $x1 == $x2 ) { |
338 | while ( $horz_taken{ $x1 + $diff } ) { |
339 | $diff = $side1 eq 'left' ? $diff - 2 : $diff + 2; |
340 | } |
341 | $horz_taken{ $x1 + $diff } = 1; |
342 | } |
343 | |
344 | if ( $side1 eq 'left' ) { |
345 | $start = $x1 - $offset + $diff; |
346 | } |
347 | else { |
348 | $start = $col1_right + $diff; |
349 | } |
350 | |
351 | if ( $side2 eq 'left' ) { |
352 | $end = $x2 - $offset + $diff; |
353 | } |
354 | else { |
355 | $end = $col2_right + $diff; |
356 | } |
357 | |
358 | push @shapes, [ 'line', $x1, $y1, $start, $y1, 'lightblue' ]; |
359 | push @shapes, [ 'line', $start, $y1, $end, $y2, 'lightblue' ]; |
360 | push @shapes, [ 'line', $end, $y2, $x2, $y2, 'lightblue' ]; |
361 | $done{ $fno1 }{ $fno2 } = 1; |
362 | $done{ $fno2 }{ $fno1 } = 1; |
363 | } |
364 | } |
365 | } |
366 | } |
367 | |
368 | # |
b18a0413 |
369 | # Add the title, legend and signature. |
dd9550a4 |
370 | # |
371 | my $large_font = gdLargeFont; |
372 | my $title_len = $large_font->width * length $title; |
aa0a19b9 |
373 | push @shapes, [ |
374 | 'string', $large_font, $max_x/2 - $title_len/2, 10, $title, 'black' |
375 | ]; |
dd9550a4 |
376 | |
b18a0413 |
377 | if ( %legend ) { |
378 | $max_y += 5; |
379 | push @shapes, [ |
380 | 'string', $font, $x, $max_y - $font->height - 4, 'Legend', 'black' |
381 | ]; |
382 | $max_y += $font->height + 4; |
383 | |
384 | my $longest; |
385 | for my $len ( map { length $_ } values %legend ) { |
386 | $longest = $len if $len > $longest; |
387 | } |
388 | $longest += 2; |
389 | |
390 | while ( my ( $key, $shape ) = each %legend ) { |
391 | my $space = $longest - length $shape; |
392 | push @shapes, [ |
393 | 'string', $font, $x, $max_y - $font->height - 4, |
394 | join( '', $shape, ' ' x $space, $key ), 'black' |
395 | ]; |
396 | |
397 | $max_y += $font->height + 4; |
398 | } |
399 | } |
400 | |
aa0a19b9 |
401 | my $sig = "auto-dia.pl $VERSION"; |
402 | my $sig_len = $font->width * length $sig; |
403 | push @shapes, [ |
404 | 'string', $font, $max_x - $sig_len, $max_y - $font->height - 4, |
405 | $sig, 'black' |
406 | ]; |
dd9550a4 |
407 | |
aa0a19b9 |
408 | # |
409 | # Render the image. |
410 | # |
dd9550a4 |
411 | my $gd = GD::Image->new( $max_x + 10, $max_y ); |
412 | unless ( $gd->can( $image_type ) ) { |
413 | die "GD can't create images of type '$image_type'\n"; |
414 | } |
aa0a19b9 |
415 | my %colors = map { $_->[0], $gd->colorAllocate( @{$_->[1]} ) } ( |
d21faa48 |
416 | [ white => [ 255, 255, 255 ] ], |
417 | [ beige => [ 245, 245, 220 ] ], |
418 | [ black => [ 0, 0, 0 ] ], |
419 | [ lightblue => [ 173, 216, 230 ] ], |
420 | [ lightgoldenrodyellow => [ 250, 250, 210 ] ], |
421 | [ khaki => [ 240, 230, 140 ] ], |
aa0a19b9 |
422 | ); |
dd9550a4 |
423 | $gd->interlaced( 'true' ); |
d21faa48 |
424 | my $background_color = $add_color ? 'lightgoldenrodyellow' : 'white'; |
425 | $gd->fill( 0, 0, $colors{ $background_color } ); |
dd9550a4 |
426 | for my $shape ( @shapes ) { |
427 | my $method = shift @$shape; |
aa0a19b9 |
428 | my $color = pop @$shape; |
429 | $gd->$method( @$shape, $colors{ $color } ); |
dd9550a4 |
430 | } |
431 | |
aa0a19b9 |
432 | # |
433 | # Print the image. |
434 | # |
dd9550a4 |
435 | if ( $out_file ) { |
436 | open my $fh, ">$out_file" or die "Can't write '$out_file': $!\n"; |
437 | print $fh $gd->$image_type; |
438 | close $fh; |
439 | print "Image written to '$out_file'. Done.\n"; |
440 | } |
441 | else { |
442 | print $gd->$image_type; |
443 | } |
444 | |
445 | =pod |
446 | |
447 | =head1 AUTHOR |
448 | |
449 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt> |
450 | |
451 | =cut |