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port_src/output/zxing/datamatrix/encoder/x12_encoder.rs

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+/*
+ * Copyright 2006-2007 Jeremias Maerki.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// package com::google::zxing::datamatrix::encoder;
+
+struct X12Encoder {
+    super: C40Encoder;
+}
+
+impl X12Encoder {
+
+    pub fn  get_encoding_mode(&self) -> i32  {
+        return HighLevelEncoder::X12_ENCODATION;
+    }
+
+    pub fn  encode(&self,  context: &EncoderContext)   {
+        //step C
+         let buffer: StringBuilder = StringBuilder::new();
+        while context.has_more_characters() {
+             let c: char = context.get_current_char();
+            context.pos += 1;
+            self.encode_char(c, &buffer);
+             let count: i32 = buffer.length();
+            if (count % 3) == 0 {
+                write_next_triplet(context, &buffer);
+                 let new_mode: i32 = HighLevelEncoder::look_ahead_test(&context.get_message(), context.pos, &self.get_encoding_mode());
+                if new_mode != self.get_encoding_mode() {
+                    // Return to ASCII encodation, which will actually handle latch to new mode
+                    context.signal_encoder_change(HighLevelEncoder::ASCII_ENCODATION);
+                    break;
+                }
+            }
+        }
+        self.handle_e_o_d(context, &buffer);
+    }
+
+    fn  encode_char(&self,  c: char,  sb: &StringBuilder) -> i32  {
+        match c {
+              '\r' => 
+                 {
+                    sb.append('\0');
+                    break;
+                }
+              '*' => 
+                 {
+                    sb.append('\1');
+                    break;
+                }
+              '>' => 
+                 {
+                    sb.append('\2');
+                    break;
+                }
+              ' ' => 
+                 {
+                    sb.append('\3');
+                    break;
+                }
+            _ => 
+                 {
+                    if c >= '0' && c <= '9' {
+                        sb.append((c - 48 + 4) as char);
+                    } else if c >= 'A' && c <= 'Z' {
+                        sb.append((c - 65 + 14) as char);
+                    } else {
+                        HighLevelEncoder::illegal_character(c);
+                    }
+                    break;
+                }
+        }
+        return 1;
+    }
+
+    fn  handle_e_o_d(&self,  context: &EncoderContext,  buffer: &StringBuilder)   {
+        context.update_symbol_info();
+         let available: i32 = context.get_symbol_info().get_data_capacity() - context.get_codeword_count();
+         let count: i32 = buffer.length();
+        context.pos -= count;
+        if context.get_remaining_characters() > 1 || available > 1 || context.get_remaining_characters() != available {
+            context.write_codeword(HighLevelEncoder::X12_UNLATCH);
+        }
+        if context.get_new_encoding() < 0 {
+            context.signal_encoder_change(HighLevelEncoder::ASCII_ENCODATION);
+        }
+    }
+}
+