git.oblomov.eu Git - ohcount/blob - ext/ohcount_native/ruby_binding.c

   1 #include "ruby.h"
   2 #include "common.h"
   3
   4 static VALUE rb_module_ohcount;
   5 static VALUE rb_class_language_breakdown;
   6
   7
   8 /*****************************************************************************
   9                                LanguageBreakdown
  10 *****************************************************************************/
  11
  12 static void _language_breakdown_free(LanguageBreakdown *language_breakdown) {
  13         language_breakdown_free(language_breakdown);
  14         free(language_breakdown);
  15 }
  16
  17 static VALUE _language_breakdown_allocate(VALUE klass) {
  18         int _my_language_id;
  19         int _my_buffer_size;
  20         _my_language_id = 0;
  21         _my_buffer_size = 100;
  22         LanguageBreakdown *language_breakdown = (LanguageBreakdown *) malloc(sizeof(LanguageBreakdown));
  23         language_breakdown_initialize(language_breakdown, "", _my_buffer_size);
  24
  25         /* bs initializers */
  26         strcpy(language_breakdown->name, "");
  27         strcpy(language_breakdown->code, "");
  28         strcpy(language_breakdown->comment, "");
  29         return Data_Wrap_Struct(klass, 0, _language_breakdown_free, language_breakdown);
  30 }
  31
  32 static VALUE _language_breakdown_initialize(VALUE self, VALUE name, VALUE code, VALUE comment, VALUE blanks) {
  33         /* validation */
  34         Check_Type(name, T_STRING);
  35         Check_Type(code, T_STRING);
  36         Check_Type(comment, T_STRING);
  37         Check_Type(blanks, T_FIXNUM);
  38
  39         LanguageBreakdown *lb;
  40         Data_Get_Struct (self, LanguageBreakdown, lb);
  41
  42         /* name */
  43         strncpy(lb->name, rb_string_value_ptr(&name), MAX_LANGUAGE_NAME);
  44
  45         /* code */
  46         if (lb->code != NULL) {
  47                 free(lb->code);
  48         }
  49         lb->code = (char*)malloc(RSTRING(code)->len);
  50         strcpy(lb->code, rb_string_value_ptr(&code));
  51
  52         /* comment */
  53         if (lb->comment != NULL) {
  54                 free(lb->comment);
  55         }
  56         lb->comment = (char*)malloc(RSTRING(comment)->len);
  57         strcpy(lb->comment, rb_string_value_ptr(&comment));
  58
  59         /* blanks */
  60         lb->blank_count = NUM2INT(blanks);
  61
  62         return self;
  63 }
  64
  65 static VALUE _language_breakdown_name(VALUE self) {
  66         LanguageBreakdown *lb;
  67         Data_Get_Struct (self, LanguageBreakdown, lb);
  68         return rb_str_new2(lb->name);
  69 }
  70
  71 static VALUE _language_breakdown_code(VALUE self) {
  72         LanguageBreakdown *lb;
  73         Data_Get_Struct (self, LanguageBreakdown, lb);
  74         return rb_str_new2(lb->code);
  75 }
  76
  77 static VALUE _language_breakdown_comment(VALUE self) {
  78         LanguageBreakdown *lb;
  79         Data_Get_Struct (self, LanguageBreakdown, lb);
  80         return rb_str_new2(lb->comment);
  81 }
  82
  83 static VALUE _language_breakdown_blanks(VALUE self) {
  84         LanguageBreakdown *lb;
  85         Data_Get_Struct (self, LanguageBreakdown, lb);
  86         return INT2NUM(lb->blank_count);
  87 }
  88
  89
  90 /*
  91  * Ohcount::parse is the main entry point to Ohcount.
  92  *
  93  * It takes two parameters: a string buffer, and a string Monoglot or Polyglot name.
  94  * The buffer will be parsed using the specified glot.
  95  *
  96  * The method returns an array of LanguageBreakdown objects. One
  97  * LanguageBreakdown will be returned for each language found in the buffer.
  98  *
  99  * You may optionally pass a block of Ruby code. As each line in the buffer
 100  * is parsed, it will be yielded to the block, along with the language name
 101  * and code semantic determined for that line.
 102  *
 103  * Ruby example:
 104  *
 105  *   # Print each line to the console, labeled as code or comments
 106  *   buffer = File.read("helloworld.c")
 107  *   results = Ohcount::parse(buffer, 'c') do |language, semantic, line|
 108  *     puts "#{semantic.to_s} #{line}"
 109  *   end
 110  *
 111  * Another example:
 112  *
 113  *   # Print total lines of code
 114  *   buffer = File.read("helloworld.c")
 115  *   results = Ohcount::parse(buffer, 'c')
 116  *   results.each do |result|
 117  *     puts "Lines of #{result.name} code: #{ result.code.split("\n").size }"
 118  *   end
 119  *
 120  * You must pass the name of a glot appropriate to the buffer you want to parse.
 121  * If you are not sure which glot is correct, use the Detector to pick a glot.
 122  */
 123 static VALUE _ohcount_parse(VALUE self, VALUE buffer, VALUE polyglot_name_value) {
 124
 125         // find the polyglot to parse with
 126         char *polyglot_name = RSTRING(polyglot_name_value)->ptr;
 127         int i_polyglot;
 128         for (i_polyglot = 0; POLYGLOTS[i_polyglot] != NULL; i_polyglot++) {
 129                 if (strcmp(POLYGLOTS[i_polyglot]->name, polyglot_name) == 0) {
 130                         Polyglot *polyglot = POLYGLOTS[i_polyglot];
 131
 132                         ParseResult pr;
 133                         parser_parse(&pr, RSTRING(buffer)->ptr, RSTRING(buffer)->len, polyglot);
 134
 135                         // create array we'll return all the language_breakdowns in
 136                         VALUE ary = rb_ary_new2(pr.language_breakdown_count);
 137
 138                         int i_pr;
 139                         for(i_pr = 0; i_pr < pr.language_breakdown_count; i_pr++) {
 140                                 LanguageBreakdown *lb = (LanguageBreakdown *) malloc(sizeof(LanguageBreakdown));
 141                                 LanguageBreakdown *src_lb = &(pr.language_breakdowns[i_pr]);
 142                                 strcpy(lb->name,src_lb->name);
 143                                 lb->code = src_lb->code;
 144                                 lb->comment = src_lb->comment;
 145                                 lb->blank_count = src_lb->blank_count;
 146                                 rb_ary_store(ary, i_pr, Data_Wrap_Struct(rb_class_language_breakdown, 0, _language_breakdown_free, lb));
 147                         }
 148
 149                         return ary;
 150                 }
 151         }
 152   rb_raise(rb_eStandardError,"Polyglot name invalid");
 153         return Qnil;
 154 }
 155
 156
 157 static VALUE _ohcount_polyglots(VALUE self) {
 158
 159         // how many are they?
 160         int poly_count = 0;
 161         Polyglot **p = POLYGLOTS;
 162         while ((*p++) != NULL) {
 163                 poly_count++;
 164         }
 165
 166         // create the array
 167         VALUE ary = rb_ary_new2(poly_count);
 168
 169         // fill it in
 170         int i_poly;
 171         for (i_poly = 0; POLYGLOTS[i_poly] != NULL; i_poly++) {
 172                 VALUE poly_name = rb_str_new2(POLYGLOTS[i_poly]->name);
 173                 rb_ary_store(ary, i_poly, poly_name);
 174         }
 175
 176         return ary;
 177 }
 178
 179
 180 void Init_ohcount_native () {
 181         rb_module_ohcount = rb_define_module("Ohcount");
 182         rb_define_module_function(rb_module_ohcount, "parse", _ohcount_parse, 2);
 183         rb_define_module_function(rb_module_ohcount, "polyglots", _ohcount_polyglots, 0);
 184
 185         // define language_breakdown
 186         rb_class_language_breakdown = rb_define_class_under( rb_module_ohcount, "LanguageBreakdown", rb_cObject);
 187         rb_define_alloc_func (rb_class_language_breakdown, _language_breakdown_allocate);
 188         rb_define_method (rb_class_language_breakdown, "initialize", _language_breakdown_initialize, 4);
 189         rb_define_method (rb_class_language_breakdown, "name", _language_breakdown_name, 0);
 190         rb_define_method (rb_class_language_breakdown, "code", _language_breakdown_code, 0);
 191         rb_define_method (rb_class_language_breakdown, "comment", _language_breakdown_comment, 0);
 192         rb_define_method (rb_class_language_breakdown, "blanks", _language_breakdown_blanks, 0);
 193 }
 194