Move mpw_identicon into mpw-algorithm.h & define colors.

core/c/mpw-algorithm.c

@@ -187,3 +187,40 @@ const char *mpw_siteState(
             return NULL;
     }
 }
+
+MPIdenticon mpw_identicon(const char *fullName, const char *masterPassword) {
+
+    const char *leftArm[] = { "╔", "╚", "╰", "═" };
+    const char *rightArm[] = { "╗", "╝", "╯", "═" };
+    const char *body[] = { "█", "░", "▒", "▓", "☺", "☻" };
+    const char *accessory[] = {
+            "◈", "◎", "◐", "◑", "◒", "◓", "☀", "☁", "☂", "☃", "", "★", "☆", "☎", "☏", "⎈", "⌂", "☘", "☢", "☣",
+            "☕", "⌚", "⌛", "⏰", "⚡", "⛄", "⛅", "☔", "♔", "♕", "♖", "♗", "♘", "♙", "♚", "♛", "♜", "♝", "♞", "♟",
+            "♨", "♩", "♪", "♫", "⚐", "⚑", "⚔", "⚖", "⚙", "⚠", "⌘", "⏎", "✄", "✆", "✈", "✉", "✌"
+    };
+
+    const uint8_t *identiconSeed = NULL;
+    if (fullName && strlen( fullName ) && masterPassword && strlen( masterPassword ))
+        identiconSeed = mpw_hash_hmac_sha256(
+                (const uint8_t *)masterPassword, strlen( masterPassword ),
+                (const uint8_t *)fullName, strlen( fullName ) );
+    if (!identiconSeed)
+        return (MPIdenticon){
+                .leftArm = "",
+                .body = "",
+                .rightArm = "",
+                .accessory = "",
+                .color=0,
+        };
+
+    MPIdenticon identicon = {
+            .leftArm = leftArm[identiconSeed[0] % (sizeof( leftArm ) / sizeof( leftArm[0] ))],
+            .body = body[identiconSeed[1] % (sizeof( body ) / sizeof( body[0] ))],
+            .rightArm = rightArm[identiconSeed[2] % (sizeof( rightArm ) / sizeof( rightArm[0] ))],
+            .accessory = accessory[identiconSeed[3] % (sizeof( accessory ) / sizeof( accessory[0] ))],
+            .color = (uint8_t)(identiconSeed[4] % (MPIdenticonColorLast - MPIdenticonColorFirst + 1) + MPIdenticonColorFirst),
+    };
+    mpw_free( &identiconSeed, 32 );
+
+    return identicon;
+}

core/c/mpw-algorithm.h

@@ -66,4 +66,7 @@ const char *mpw_siteState(
         const MPResultType resultType, const char *resultParam,
         const MPAlgorithmVersion algorithmVersion);
 
+/** @return A fingerprint for a user. */
+MPIdenticon mpw_identicon(const char *fullName, const char *masterPassword);
+
 #endif // _MPW_ALGORITHM_H

core/c/mpw-types.c

@@ -262,40 +262,3 @@ const char mpw_characterFromClass(char characterClass, uint8_t seedByte) {
 
     return classCharacters[seedByte % strlen( classCharacters )];
 }
-
-MPIdenticon mpw_identicon(const char *fullName, const char *masterPassword) {
-
-    const char *leftArm[] = { "╔", "╚", "╰", "═" };
-    const char *rightArm[] = { "╗", "╝", "╯", "═" };
-    const char *body[] = { "█", "░", "▒", "▓", "☺", "☻" };
-    const char *accessory[] = {
-            "◈", "◎", "◐", "◑", "◒", "◓", "☀", "☁", "☂", "☃", "", "★", "☆", "☎", "☏", "⎈", "⌂", "☘", "☢", "☣",
-            "☕", "⌚", "⌛", "⏰", "⚡", "⛄", "⛅", "☔", "♔", "♕", "♖", "♗", "♘", "♙", "♚", "♛", "♜", "♝", "♞", "♟",
-            "♨", "♩", "♪", "♫", "⚐", "⚑", "⚔", "⚖", "⚙", "⚠", "⌘", "⏎", "✄", "✆", "✈", "✉", "✌"
-    };
-
-    const uint8_t *identiconSeed = NULL;
-    if (fullName && strlen( fullName ) && masterPassword && strlen( masterPassword ))
-        identiconSeed = mpw_hash_hmac_sha256(
-                (const uint8_t *)masterPassword, strlen( masterPassword ),
-                (const uint8_t *)fullName, strlen( fullName ) );
-    if (!identiconSeed)
-        return (MPIdenticon){
-                .leftArm = "",
-                .body = "",
-                .rightArm = "",
-                .accessory = "",
-                .color=0,
-        };
-
-    MPIdenticon identicon = {
-            .leftArm = leftArm[identiconSeed[0] % (sizeof( leftArm ) / sizeof( leftArm[0] ))],
-            .body = body[identiconSeed[1] % (sizeof( body ) / sizeof( body[0] ))],
-            .rightArm = rightArm[identiconSeed[2] % (sizeof( rightArm ) / sizeof( rightArm[0] ))],
-            .accessory = accessory[identiconSeed[3] % (sizeof( accessory ) / sizeof( accessory[0] ))],
-            .color = (uint8_t)(identiconSeed[4] % 7 + 1),
-    };
-    mpw_free( &identiconSeed, 32 );
-
-    return identicon;
-}

core/c/mpw-types.h

@@ -111,12 +111,26 @@ typedef mpw_enum ( uint32_t, MPCounterValue ) {
     MPCounterValueLast = UINT32_MAX,
 };
 
+/** These colours are compatible with the original ANSI SGR. */
+typedef mpw_enum( uint8_t, MPIdenticonColor ) {
+    MPIdenticonColorRed = 1,
+    MPIdenticonColorGreen,
+    MPIdenticonColorYellow,
+    MPIdenticonColorBlue,
+    MPIdenticonColorMagenta,
+    MPIdenticonColorCyan,
+    MPIdenticonColorWhite,
+
+    MPIdenticonColorFirst = MPIdenticonColorRed,
+    MPIdenticonColorLast = MPIdenticonColorWhite,
+};
+
 typedef struct {
     const char *leftArm;
     const char *body;
     const char *rightArm;
     const char *accessory;
-    uint8_t color;
+    MPIdenticonColor color;
 } MPIdenticon;
 
 //// Type utilities.
@@ -165,7 +179,4 @@ const char *mpw_charactersInClass(char characterClass);
  */
 const char mpw_characterFromClass(char characterClass, uint8_t seedByte);
 
-/** @return A fingerprint for a user. */
-MPIdenticon mpw_identicon(const char *fullName, const char *masterPassword);
-
 #endif // _MPW_TYPES_H