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package Stlgen; |
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use warnings; |
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use strict; |
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use Template; |
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use Data::Dumper; |
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=head1 NAME |
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Stlgen - Create "Standard Template Library" (STL) C++ type containers but generate code in other languages. |
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=head1 VERSION |
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Version 0.012 |
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=cut |
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our $VERSION = '0.012'; |
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=head1 SYNOPSIS |
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Stlgen is based off the Standard Template Library (STL) for C++ here: |
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http://www.cplusplus.com/reference/stl/ |
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The difference is that Stlgen will generate instances of STL templates |
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in a different language. The default language is c. |
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This example below uses Stlgen to generate list_uint.(c/h) files which will implement |
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a linked list container coded in the c language. |
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#!/usr/bin/perl -w |
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use Stlgen; |
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my $inst = Stlgen->New( |
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Template=>'list', |
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Instancename => 'uint', |
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payload => [ |
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{name=>'uint', type=>'unsigned int', dumper=>'printf("\t\tuint = %u\n", currelement->uint);'}, |
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], |
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); |
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$inst->Instantiate(); |
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You could use these files in a main.c program like this: |
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#include |
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#include "list_uint.h" |
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53
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int main (void) { |
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struct list_uint_list *mylist; |
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57
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mylist = list_uint_constructor(); |
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list_uint_push_back(mylist, 21); |
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list_uint_push_back(mylist, 99); |
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list_uint_push_back(mylist, 33); |
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list_uint_push_back(mylist, 34); |
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list_uint_push_back(mylist, 67); |
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list_uint_push_back(mylist, 12); |
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list_uint_push_back(mylist, 28); |
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list_uint_push_back(mylist, 55); |
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list_uint_push_back(mylist, 76); |
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69
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list_uint_sort(mylist); |
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71
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printf("\n\n\nThis is the sorted list\n"); |
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list_uint_list_dumper(mylist); |
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74
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return 0; |
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} |
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The above c program currently works and produces the following output |
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when you compile and execute it: |
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80
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This is the sorted list |
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// list at address 140644360{ |
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'beforefirst' marker: |
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// element at address 8621018 |
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prev = 0 |
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next = 8621088 |
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uint = 0 |
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user elements: |
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// element at address 8621088 |
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prev = 8621018 |
90
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next = 8621038 |
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uint = 12 |
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// element at address 8621038 |
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prev = 8621088 |
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next = 8621098 |
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uint = 21 |
96
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// element at address 8621098 |
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prev = 8621038 |
98
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next = 8621058 |
99
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uint = 28 |
100
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// element at address 8621058 |
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prev = 8621098 |
102
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next = 8621068 |
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uint = 33 |
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// element at address 8621068 |
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prev = 8621058 |
106
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next = 86210a8 |
107
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uint = 34 |
108
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// element at address 86210a8 |
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prev = 8621068 |
110
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next = 8621078 |
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uint = 55 |
112
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// element at address 8621078 |
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prev = 86210a8 |
114
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next = 86210b8 |
115
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uint = 67 |
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// element at address 86210b8 |
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prev = 8621078 |
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next = 8621048 |
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uint = 76 |
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// element at address 8621048 |
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prev = 86210b8 |
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next = 8621028 |
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uint = 99 |
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'afterlast' marker: |
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// element at address 8621028 |
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prev = 8621048 |
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next = 0 |
128
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uint = 0 |
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130
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Note: this is a pre-alpha version. Currently the only STL container |
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implemented is the linked list. And that hasn't been tested very well yet. |
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The "push", "pop", "size", "sort", and "dumper" functions are known to work. |
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136
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137
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=head1 SUBROUTINES/METHODS |
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139
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=head2 New |
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141
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Create a Stlgen object. |
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143
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=cut |
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145
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sub New { |
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my $class = shift(@_); |
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my $href={ |
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Separator => '/', |
150
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Language => 'c', |
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Extension => ['template'], # possible extensions that template file might have. |
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TemplateSubdir => ['templates'], # subdirectory to look for containing the templates. |
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Path => [], # ref to an array containing a list of paths to look for template in. |
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Template => undef, # this would be "list" or "hash" or whatever STL container name you want |
155
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}; |
156
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157
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0
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my %useroverrides = @_; |
158
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159
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0
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while( my($key,$data)=each(%useroverrides) ){ |
160
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print "override key '$key' to data '$data'\n"; |
161
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0
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$href->{$key}=$data; |
162
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} |
163
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164
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0
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my $obj = bless($href,$class); |
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166
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0
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return $obj; |
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} |
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169
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170
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171
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172
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=head2 FindTemplate |
173
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174
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Given all the configuration info we know, find the template that the user wants to use. |
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176
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=cut |
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178
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179
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sub FindTemplate{ |
180
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181
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my($obj)=@_; |
182
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183
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#print Dumper \%INC; |
184
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185
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0
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my $sep = $obj->{Separator}; |
186
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187
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0
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my $class = ref($obj); |
188
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#print "class is '$class'\n"; |
189
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190
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0
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my $modulename = "$class.pm"; |
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192
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0
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unless(exists($INC{$modulename})) { |
193
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die "ERROR: unable to find modulename in \%INC, '$modulename'"; |
194
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} |
195
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196
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0
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my $modulepath = $INC{$modulename}; |
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198
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0
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$modulepath =~ s{\.pm\Z}{}; |
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200
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0
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my @paths = ($modulepath); |
201
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202
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# figure out the name of the template subdirs we're looking for |
203
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my $templatename = $obj->{Template}; |
204
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0
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my $language = $obj->{Language}; |
205
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206
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# now go through the paths in order and look for the class that the object is blessed as. |
207
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foreach my $path (@paths) { |
208
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foreach my $templatesubdir (@{$obj->{TemplateSubdir}}) { |
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209
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my $lookingfor = |
210
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$path.$sep.$templatesubdir.$sep. |
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$language.$sep.$templatename; |
212
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213
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0
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warn "Stlgen is looking for template '$lookingfor'"; |
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215
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0
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0
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0
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if(-e $lookingfor and -d $lookingfor) { |
216
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0
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warn "Stlgen found template '$lookingfor'"; |
217
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0
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return $lookingfor; |
218
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} |
219
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} |
220
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} |
221
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222
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0
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die "Error: unable to find template file"; |
223
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224
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} |
225
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226
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227
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=head2 Instantiate |
228
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229
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Instantiate a template based on a particular type. |
230
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231
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=cut |
232
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233
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sub Instantiate { |
234
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0
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0
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1
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my($obj)=@_; |
235
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236
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#print Dumper $obj; |
237
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238
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0
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my $templatepath = $obj->FindTemplate(); |
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240
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0
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print "templatepath is '$templatepath'\n"; |
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0
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my $tt = Template->new({ |
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ABSOLUTE => 1, # allow absolute filename paths |
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RELATIVE => 1, # allow relative filename paths |
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INTERPOLATE => 0, |
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}) || die "$Template::ERROR\n"; |
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0
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$obj->{payloadsize}=scalar(@{$obj->{payload}}); |
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0
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249
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250
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251
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0
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my @templates = `ls -1 $templatepath`; |
252
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0
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foreach my $template (@templates) { |
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0
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chomp($template); |
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} |
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#print Dumper \@templates; |
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0
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my $sep = $obj->{Separator}; |
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my $shortname = $obj->{Instancename}; |
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260
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0
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foreach my $template (@templates) { |
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0
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my $templatefile = $templatepath.$sep.$template; |
262
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263
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0
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my $named_template = $template; |
264
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0
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$named_template =~ s{NAME}{$shortname}; |
265
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0
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my $instname = '.'.$sep.$named_template; |
266
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267
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0
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print "Instantiating template file '$templatefile' as '$instname'\n"; |
268
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0
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0
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$tt->process($templatefile, $obj, $instname ) |
269
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|| die $tt->error(), "\n"; |
270
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} |
271
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272
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273
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274
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} |
275
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276
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277
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278
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=head2 function2 |
279
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280
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=cut |
281
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282
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0
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0
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1
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sub function2 { |
283
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} |
284
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285
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|
=head1 AUTHOR |
286
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287
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|
Greg London, C<< >> |
288
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289
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=head1 BUGS |
290
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291
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Please report any bugs or feature requests to C, or through |
292
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the web interface at L. I will be notified, and then you'll |
293
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automatically be notified of progress on your bug as I make changes. |
294
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295
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296
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297
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298
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|
=head1 SUPPORT |
299
|
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300
|
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|
You can find documentation for this module with the perldoc command. |
301
|
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302
|
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|
perldoc Stlgen |
303
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304
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305
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|
You can also look for information at: |
306
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307
|
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|
=over 4 |
308
|
|
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309
|
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|
|
=item * RT: CPAN's request tracker |
310
|
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311
|
|
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|
|
L |
312
|
|
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|
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313
|
|
|
|
|
|
|
=item * AnnoCPAN: Annotated CPAN documentation |
314
|
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|
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|
315
|
|
|
|
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|
|
L |
316
|
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317
|
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|
=item * CPAN Ratings |
318
|
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319
|
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|
L |
320
|
|
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|
321
|
|
|
|
|
|
|
=item * Search CPAN |
322
|
|
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323
|
|
|
|
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|
|
L |
324
|
|
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|
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|
|
|
325
|
|
|
|
|
|
|
=back |
326
|
|
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|
|
|
|
|
327
|
|
|
|
|
|
|
|
328
|
|
|
|
|
|
|
=head1 ACKNOWLEDGEMENTS |
329
|
|
|
|
|
|
|
|
330
|
|
|
|
|
|
|
|
331
|
|
|
|
|
|
|
=head1 LICENSE AND COPYRIGHT |
332
|
|
|
|
|
|
|
|
333
|
|
|
|
|
|
|
Copyright 2010 Greg London. |
334
|
|
|
|
|
|
|
|
335
|
|
|
|
|
|
|
This program is free software; you can redistribute it and/or modify it |
336
|
|
|
|
|
|
|
under the terms of either: the GNU General Public License as published |
337
|
|
|
|
|
|
|
by the Free Software Foundation; or the Artistic License. |
338
|
|
|
|
|
|
|
|
339
|
|
|
|
|
|
|
See http://dev.perl.org/licenses/ for more information. |
340
|
|
|
|
|
|
|
|
341
|
|
|
|
|
|
|
|
342
|
|
|
|
|
|
|
=cut |
343
|
|
|
|
|
|
|
|
344
|
|
|
|
|
|
|
1; # End of Stlgen |
345
|
|
|
|
|
|
|
|
346
|
|
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|
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|
|
|