/[webpac]/branches/fsb/parse_format.pm
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Annotation of /branches/fsb/parse_format.pm

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Revision 458 - (hide annotations)
Tue Sep 21 16:53:44 2004 UTC (15 years, 4 months ago) by dpavlin
File size: 7193 byte(s)
update branches with bugfixes from HEAD

1 dpavlin 10 #-------------------------------------------------------------
2     #
3 dpavlin 54 # parse_format(...)
4 dpavlin 10 #
5    
6     sub parse_format {
7 dpavlin 54 my $type = shift || die "parset_format must be called with type!";
8 dpavlin 43 my $format = shift || die "parse_format must be called with format!";
9     my $row = shift || die "parse_format must be called with row!";
10 dpavlin 23 my $i = shift || 0; # isis repeatable number
11 dpavlin 43 my $codepage = shift || die "parse_format must be called with codepage!";
12 dpavlin 54 if ($type eq "isis") {
13 dpavlin 62 return parse_iso_format($format,$row,$i,$codepage,'isis_sf');
14 dpavlin 54 } elsif ($type eq "excel") {
15     return parse_excel_format($format,$row,$i,$codepage);
16 dpavlin 62 } elsif ($type eq "marc") {
17     return parse_iso_format($format,$row,$i,$codepage,'marc_sf');
18 dpavlin 67 } elsif ($type eq "feed") {
19     return parse_feed_format($format,$row,$i,$codepage);
20 dpavlin 54 }
21     }
22 dpavlin 10
23 dpavlin 54 #-------------------------------------------------------------
24    
25 dpavlin 62 sub parse_iso_format {
26 dpavlin 54
27     my $format = shift;
28     my $row = shift;
29     my $i = shift;
30     my $codepage = shift;
31    
32 dpavlin 62 my $func = shift || die "need to know which sub-field function to use";
33    
34     require $func.".pm";
35    
36 dpavlin 10 my $out;
37     my $out_swish;
38    
39     my $display;
40     my $swish;
41    
42 dpavlin 62 sub cnv_cp {
43 dpavlin 78 my $codepage = shift;
44     my $tmp = shift || return;
45 dpavlin 62 if ($codepage) {
46 dpavlin 78 $tmp = $codepage->convert($tmp) || print STDERR "iso: '$tmp' can't convert\n";
47 dpavlin 62 }
48     return $tmp;
49     }
50    
51 dpavlin 170 # if format doesn't exits, store it in cache
52     if (! defined($cache->{format}->{$format})) {
53     # print STDERR "parsing format for '$format'\n";
54     my @fmt;
55    
56     my $f = $format;
57    
58 dpavlin 263 my $eval;
59 dpavlin 458 $eval = $1 if ($f =~ s/^eval{([^}]+?)}//);
60 dpavlin 263
61 dpavlin 170 if ($f =~ s/^([^\d]+)//) {
62     if ($f) { # there is more to parse
63     push @fmt,$1;
64     } else {
65     @fmt = ('',$1,undef,'');
66     #print STDERR "just one field: $1\n";
67 dpavlin 10 }
68 dpavlin 170 } else {
69     push @fmt,'';
70     }
71    
72     while ($f) {
73     # print STDERR "\n#### $f";
74     # this is EBSCO special to support numeric subfield in
75     # form of 856#3
76     if ($f =~ s/^(\d\d\d)#*(\w?)//) {
77     push @fmt,$1;
78     if ($2) {
79     push @fmt,$2;
80     } else {
81     push @fmt,undef;
82     }
83     # this might be our local scpeciality -- fields 10 and 11
84     # (as opposed to 010 and 011) so they are strictly listed
85     # here
86 dpavlin 187 } elsif ($f =~ s/^(1[01]\w?)//) {
87 dpavlin 170 push @fmt,$1;
88     push @fmt,undef;
89     } elsif ($f =~ s/^mfn//i) {
90     push @fmt,'mfn';
91     push @fmt,'';
92     } elsif ($f =~ s/^([^\d]+)(\d{0,3})/$2/) {
93 dpavlin 176 # still prefix?
94     if ($#fmt == 0) {
95     $fmt[0] .= $1;
96     } else {
97     push @fmt,$1;
98     }
99 dpavlin 170 } elsif ($f =~ s/^([^\d]+\d{0,2})//) {
100 dpavlin 176 if ($#fmt == 0) {
101     $fmt[0] .= $1;
102     } else {
103     push @fmt,$1;
104     }
105 dpavlin 170 } elsif ($f =~ s/^(\d{1,2})//) {
106 dpavlin 176 if ($#fmt == 0) {
107     $fmt[0] .= $1;
108     } else {
109     push @fmt,$1;
110     }
111 dpavlin 170 } else {
112     print STDERR "unparsed format: $f\n";
113     $f = "";
114     }
115     }
116     push @fmt,'' if ($#fmt % 3 != 0); # add empty suffix
117 dpavlin 263
118     $cache->{format_eval}->{$format} = $eval; # store eval string (if any)
119    
120 dpavlin 170 $cache->{format}->{$format} = \@fmt;
121    
122 dpavlin 187 # print STDERR "storing format for '$format': [",join("|",@fmt),"]\n";
123 dpavlin 170 # print STDERR "storing format for '$format':",Dumper(@fmt),"\n";
124     # print STDERR Dumper($cache->{format}->{$format});
125     }
126    
127     # now produce actual record
128     my $tmp = $cache->{format}->{$format} || die "no format cache for '$format'";
129     my @fmt = @{$tmp};
130     # print STDERR "using format for '$format':",Dumper(@fmt),"\n";
131     # print STDERR "tmp ",Dumper($tmp);
132     # print STDERR "cache: ",Dumper($cache->{format}->{$format});
133    
134     # prefix
135     my $prefix = shift @fmt;
136     my $sufix;
137     while($#fmt > 1) {
138     my $f = shift @fmt || die "BUG: field name can't be empty!";
139     my $sf = shift @fmt;
140    
141     if ($f eq 'mfn' && $i == 0) {
142     $display .= $sufix if ($display);
143     $display .= $row->{mfn};
144     } else {
145     my $val = &$func($row,$f,$sf,$i);
146     if ($val) {
147     # print STDERR "val: $val\n";
148     my $tmp = cnv_cp($codepage,$val);
149     if ($display) {
150     $display .= $sufix.$tmp;
151     } else {
152     $display = $tmp;
153     }
154 dpavlin 57 $swish .= $tmp." ";
155 dpavlin 22 }
156 dpavlin 10 }
157 dpavlin 170 $sufix = shift @fmt;
158 dpavlin 10 }
159 dpavlin 170 $display = $prefix.$display.$sufix if ($display);
160 dpavlin 10
161 dpavlin 263 my $eval = $cache->{format_eval}->{$format};
162     if ($eval) {
163     sub fld2str {
164     my ($func,$row,$f,$sf,$i) = @_;
165     #print STDERR "## in fld2str\n";
166 dpavlin 458 my $tmp = $codepage->convert(&$func($row,$f,$sf,$i)) || $codepage->convert(&$func($row,$f,$sf,0)) || '';
167 dpavlin 263 return "'$tmp'";
168     }
169 dpavlin 176
170 dpavlin 263 $eval =~ s/v(\d+)\^(\w*)/fld2str($func,$row,$1,$2,$i)/eg;
171     #print STDERR "## eval: $eval\n";
172     if (eval "$eval") {
173 dpavlin 458 die "eval error: eval{$eval}: $@" if ($@);
174 dpavlin 263 return ($swish,$display);
175     } else {
176 dpavlin 458 die "eval error: eval{$eval}: $@" if ($@);
177 dpavlin 263 return (undef,undef);
178     }
179     }
180    
181     if (@fmt) {
182     print STDERR "format left unused: [",join("|",@fmt),"]\n";
183     print STDERR "format: [",join("|",@{$tmp}),"]\n";
184     }
185    
186 dpavlin 187 # print STDERR "format: {",$format || '',"} display: {",$display || '',"} swish: {",$swish || '',"}\n";
187 dpavlin 170
188 dpavlin 10 return ($swish,$display);
189     }
190    
191     #-------------------------------------------------------------
192 dpavlin 54
193     sub parse_excel_format {
194     my $format = shift;
195     my $row = shift;
196     my $i = shift;
197     my $codepage = shift;
198    
199 dpavlin 90 return if ($i > 0); # Excel doesn't support repeatable fields
200    
201 dpavlin 54 my $out;
202     my $out_swish;
203    
204     my $prefix = "";
205     if ($format =~ s/^([^A-Z\|]{1,3})//) {
206     $prefix = $1;
207     }
208    
209     my $display;
210     my $swish;
211    
212     while ($format && length($format) > 0) {
213     #print STDERR "\n#### $format #";
214     if ($format =~ s/^\|([A-Z]{1,2})\|//) {
215     #print STDERR "--$1-> $format -[",length($format),"] ";
216     if ($row->{$1}) {
217     my $tmp = $row->{$1};
218 dpavlin 57 if ($codepage) {
219     $tmp = $codepage->convert($tmp) || warn "excel: $1 '$tmp' can't convert";
220     }
221 dpavlin 54 $display .= $prefix . $tmp;
222     $swish .= $tmp." ";
223     #print STDERR " == $tmp";
224     }
225     $prefix = "";
226     } elsif ($format =~ s/^([^A-Z\|]+)(\|[A-Z]{1,2}\|)/$2/) {
227     $prefix .= $1 if ($display);
228     } else {
229 dpavlin 297 #print STDERR "unparsed format: $format\n";
230 dpavlin 54 $prefix .= $format;
231     $format = "";
232     }
233     #print STDERR " display: $display swish: $swish [format: $format]";
234     }
235     # add suffix
236     $display .= $prefix if ($display);
237    
238     return ($swish,$display);
239     }
240    
241 dpavlin 67 #-------------------------------------------------------------
242    
243     sub parse_feed_format {
244     my $format = shift;
245     my $data = shift;
246     my $i = shift;
247     my $codepage = shift;
248    
249 dpavlin 92 # XXX feed doesn't support repeatable fields, but they really
250     # should, This is a bug. It should be fixed!
251     return if ($i > 0);
252    
253 dpavlin 67 my $out;
254     my $out_swish;
255    
256     my $prefix = "";
257     if ($format =~ s/^([^\d\|]{1,3})//) {
258     $prefix = $1;
259     }
260    
261     my $display;
262     my $swish;
263    
264     while ($format && length($format) > 0) {
265     #print STDERR "\n#### $format #";
266     if ($format =~ s/^\|(\d+)\|//) {
267     #print STDERR "--$1-> $format -[",length($format),"] ";
268     if ($data->{$1}) {
269     my $tmp = $data->{$1};
270     if ($codepage) {
271     $tmp = $codepage->convert($tmp) || warn "feed: $1 '$tmp' can't convert\n";
272     }
273     $display .= $prefix . $tmp;
274     $swish .= $tmp." ";
275     #print STDERR " == $tmp";
276     }
277     $prefix = "";
278     } elsif ($format =~ s/^([^\d\|]+)(\|\d+\|)/$2/) {
279     $prefix .= $1 if ($display);
280     } else {
281     print STDERR "unparsed format: $format\n";
282     $prefix .= $format;
283     $format = "";
284     }
285     #print STDERR " display: $display swish: $swish [format: $format]";
286     }
287     # add suffix
288     $display .= $prefix if ($display);
289    
290     return ($swish,$display);
291     }
292    
293     #-------------------------------------------------------------
294    
295 dpavlin 10 1;

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