exposed private API for better testing on MPPickcharsParser.

Parser now support default conversion to down arrow presses.
Special format handling currently not supported

MacPass.xcodeproj/project.pbxproj

@@ -326,6 +326,7 @@
 		4C0728BB17B5B7F7005A7DD9 /* MPPasswordEditWindowController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MPPasswordEditWindowController.h; sourceTree = "<group>"; };
 		4C0728BC17B5B7F7005A7DD9 /* MPPasswordEditWindowController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MPPasswordEditWindowController.m; sourceTree = "<group>"; };
 		4C0728BE17B68ED0005A7DD9 /* SavePanelAccessoryView.xib */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.xib; path = SavePanelAccessoryView.xib; sourceTree = "<group>"; };
+		4C088C401FD9A42800F92502 /* MPPickcharsParser_Private.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MPPickcharsParser_Private.h; sourceTree = "<group>"; };
 		4C0949571FD6B89B004F2971 /* NSUserNotification+MPAdditions.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "NSUserNotification+MPAdditions.h"; sourceTree = "<group>"; };
 		4C0949581FD6B89B004F2971 /* NSUserNotification+MPAdditions.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = "NSUserNotification+MPAdditions.m"; sourceTree = "<group>"; };
 		4C09495A1FD6E510004F2971 /* MPAddCustomFieldContextMenuDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MPAddCustomFieldContextMenuDelegate.h; sourceTree = "<group>"; };
@@ -1135,7 +1136,6 @@
 		4C45FB1E178E09ED0010007D /* MacPassTests */ = {
 			isa = PBXGroup;
 			children = (
-				4C8F0C721FCF1B7A00BE157F /* MPTestPickcharsParser.m */,
 				4CCFA12C1BF0CC7A0078E0A1 /* Databases */,
 				4C10207E1B750E2F00BFCD59 /* MPTestAutotype.m */,
 				4C8DEAA11C314D2C00D24C32 /* MPTestAutotypeDelay.m */,
@@ -1143,6 +1143,7 @@
 				4C45FB2F178E0CE20010007D /* MPTestDocument.m */,
 				4C6BC65F1A36717E00BDDF3D /* MPDatabaseSearch.m */,
 				4C8030491E2FBAA300133E4C /* MPTestKeyMapper.m */,
+				4C8F0C721FCF1B7A00BE157F /* MPTestPickcharsParser.m */,
 				4C45FB1F178E09ED0010007D /* Supporting Files */,
 			);
 			path = MacPassTests;
@@ -1418,6 +1419,7 @@
 				4C1F7FA01E3A12E600D6A40E /* MPModifiedKey.h */,
 				4C1F7FA11E3A12E600D6A40E /* MPModifiedKey.m */,
 				4C8F0C6F1FCEF91400BE157F /* MPPickcharsParser.h */,
+				4C088C401FD9A42800F92502 /* MPPickcharsParser_Private.h */,
 				4C8F0C701FCEF91400BE157F /* MPPickcharsParser.m */,
 			);
 			name = Autotype;

MacPass/MPPickcharsParser.m

@@ -7,18 +7,49 @@
 //
 
 #import "MPPickcharsParser.h"
+#import "MPPickcharsParser_Private.h"
+
 #import "NSString+MPComposedCharacterAdditions.h"
+
 #import <KeePassKit/KeePassKit.h>
 
-@interface MPPickcharsParser ()
+typedef NS_ENUM(NSInteger, MPPickCharOffsetType) {
+  MPPickCharOffsetTypeNone,
+  MPPickCharOffsetTypeCharacter,
+  MPPickCharOffsetTypeNumber,
+};
 
-@property NSUInteger pickCount; // count to pick
-@property NSUInteger checkboxOffset;
-@property BOOL convertToDownArrows;
-@property BOOL hideCharacters;
-@property (copy) NSString *checkboxFormat;
+struct MPPickCharOffset {
+  MPPickCharOffsetType type;
+  NSUInteger offset;
+};
+typedef struct MPPickCharOffset MPPickCharOffset;
 
-@end
+MPPickCharOffset MPMakePickCharCharacterOffset(NSUInteger offset) {
+  MPPickCharOffset offsetStruct = {MPPickCharOffsetTypeCharacter, offset};
+  return offsetStruct;
+}
+MPPickCharOffset MPMakePickCharNumberOffset(NSUInteger offset) {
+  MPPickCharOffset offsetStruct = {MPPickCharOffsetTypeNumber, offset};
+  return offsetStruct;
+}
+
+MPPickCharOffset MPMakeInvalidPickCharOffset(void) {
+  MPPickCharOffset offset = {MPPickCharOffsetTypeNone,0};
+  return offset;
+}
+
+BOOL MPIsValidPickCharOffset(MPPickCharOffset offset) {
+  return (offset.type != MPPickCharOffsetTypeNone);
+}
+
+NSInteger numberOffset(MPPickCharOffset offset) {
+  return (offset.type == MPPickCharOffsetTypeNumber ? offset.offset : 0);
+}
+
+NSInteger characterOffset(MPPickCharOffset offset) {
+  return (offset.type == MPPickCharOffsetTypeCharacter ? offset.offset : 0);
+}
 
 @implementation MPPickcharsParser
 
@@ -43,12 +74,50 @@
   if(!self.convertToDownArrows) {
     return string;
   }
-  for(NSString *character in string.composedCharacters) {
-    
+  NSMutableString *mutableString = [[NSMutableString alloc] init];
+  BOOL isFirst = NO;
+  for(NSString *substring in string.composedCharacters) {
+    if(substring.length != 1) {
+      NSLog(@"Pickchars: Unsupported character %@ for conversion to down arrows, skipping!", substring);
+      continue;
     }
-  return nil;
+    MPPickCharOffset offset = MPMakeInvalidPickCharOffset();
+    unichar character = [substring characterAtIndex:0];
+    if(character >= '0' && character <= '9') {
+      offset = MPMakePickCharNumberOffset(character - '0');
+    }
+    else if(character >= 'a' && character <= 'z') {
+      offset = MPMakePickCharCharacterOffset(character - 'a');
+    }
+    else if(character >= 'A' && character <= 'Z') {
+      offset = MPMakePickCharCharacterOffset(character - 'A');
+    }
+    [self _appendKeyCommandsForOffset:offset toString:mutableString];
+  }
+  return [mutableString copy];
 }
 
+- (void)_appendKeyCommandsForOffset:(MPPickCharOffset)offset toString:(NSMutableString *)string {
+  if(!MPIsValidPickCharOffset(offset)) {
+    return;
+  }
+  NSUInteger actualOffset = self.checkboxOffset;
+  switch(offset.type) {
+    case MPPickCharOffsetTypeNumber:
+      actualOffset += offset.offset;
+      break;
+    case MPPickCharOffsetTypeCharacter:
+      actualOffset += offset.offset;
+      break;
+    case MPPickCharOffsetTypeNone:
+    default:
+      break;
+  }
+  /* todo respect format definition */
+  while (actualOffset--) {
+    [string appendString:kKPKAutotypeDown];
+  }
+}
 /*
  {PICKCHAR:Field:Options}
  

MacPass/MPPickcharsParser_Private.h

@@ -0,0 +1,19 @@
+//
+//  MPPickcharsParser_Private.h
+//  MacPass
+//
+//  Created by Michael Starke on 07.12.17.
+//  Copyright © 2017 HicknHack Software GmbH. All rights reserved.
+//
+
+#import "MPPickcharsParser.h"
+
+@interface MPPickcharsParser ()
+
+@property NSUInteger pickCount; // count to pick
+@property NSUInteger checkboxOffset;
+@property BOOL convertToDownArrows;
+@property BOOL hideCharacters;
+@property (copy) NSString *checkboxFormat;
+
+@end

MacPassTests/MPTestPickcharsParser.m

@@ -7,7 +7,9 @@
 //
 
 #import <XCTest/XCTest.h>
+
 #import "MPPickcharsParser.h"
+#import "MPPickcharsParser_Private.h"
 
 @interface MPTestPickcharsParser : XCTestCase
 
@@ -34,4 +36,22 @@
   XCTAssertEqualObjects(@"0A", parser.checkboxFormat);
 }
 
+- (void)testConvertToDownArrows {
+  MPPickcharsParser *parser = [[MPPickcharsParser alloc] init];
+  parser.convertToDownArrows = YES;
+  NSString *result = [parser processPickedString:@"105"];  // 1 + 0 + 5 = 6
+  XCTAssertEqualObjects(result, @"{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}");
+  result = [parser processPickedString:@"ccb"]; // 2 + 2 + 1 = 5
+  XCTAssertEqualObjects(result, @"{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}");
+  result = [parser processPickedString:@"CCB"]; // 2 + 2 + 1 = 5
+  XCTAssertEqualObjects(result, @"{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}");
+  parser.checkboxOffset = 2;
+  result = [parser processPickedString:@"105"]; // 1 + 0 + 5 + (3 * 2) = 6 + 6 = 12
+  XCTAssertEqualObjects(result, @"{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}");
+  result = [parser processPickedString:@"ccb"]; // 2 + 2 + 1 + (2 * 2) = 5 + 6 = 12
+  XCTAssertEqualObjects(result, @"{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}{DOWN}");
+}
+
+
+
 @end