文字列リテラルのエスケープシークエンスに\xnnを追加するパッチ

これでオブジェクトファイルを直接いじらず非印字を文字列リテラルに入れられますね。微妙。

--- codegen.cpp.orig	Mon Jan 14 09:30:26 2008
+++ codegen.cpp	Wed Feb 13 15:39:36 2008
@@ -398,6 +398,19 @@
 			case 'r':
 				a1 = 13;
 				break;
+			case 'x':
+				if( !isxdigit( *(vs+1) ) || !isxdigit( *(vs+2) ) ) {
+					continue;
+				}
+				{
+					unsigned char a2;
+					a2 = tolower( *++vs );
+					a1 = isdigit( a2 ) ? a2 - '0' : a2 - 'a' + 10;
+					a1 *= 16;
+					a2 = tolower( *++vs );
+					a1 += isdigit( a2 ) ? a2 - '0' : a2 - 'a' + 10;
+				}
+				goto skip;
 			}
 		}
 		if (a1>=129) {					// 全角文字チェック
@@ -407,6 +420,7 @@
 				a1=*vs;
 			}
 		}
+skip:
 		vs++;
 		*pp++ = a1;
 	}
@@ -454,6 +468,19 @@
 			case 0x22:
 				a1 = 0x22;
 				break;
+			case 'x':
+				if( !isxdigit( *(vs+1) ) || !isxdigit( *(vs+2) ) ) {
+					continue;
+				}
+				{
+					unsigned char a2;
+					a2 = tolower( *++vs );
+					a1 = isdigit( a2 ) ? a2 - '0' : a2 - 'a' + 10;
+					a1 *= 16;
+					a2 = tolower( *++vs );
+					a1 += isdigit( a2 ) ? a2 - '0' : a2 - 'a' + 10;
+				}
+				goto skip;
 			}
 		}
 		if (a1>=129) {					// 全角文字チェック
@@ -463,6 +490,7 @@
 				a1=*vs;
 			}
 		}
+skip:
 		vs++;
 		*pp++ = a1;
 	}

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