main.go

 package main
 
 import (
-	"bytes"
+	"code.vereign.com/code/restful-api/server"
 	"fmt"
 	"io/ioutil"
 	"os"
@@ -10,9 +10,6 @@ import (
 	"sort"
 	"strings"
 	"unicode"
-	"unicode/utf8"
-
-	"code.vereign.com/code/restful-api/server"
 )
 
 func main() {
@@ -164,129 +161,11 @@ func buildViamAPI() string {
 	return result
 }
 
-const (
-	caseMask     = ^byte(0x20) // Mask to ignore case in ASCII.
-	kelvin       = '\u212a'
-	smallLongEss = '\u017f'
-)
-
-// equalFoldRight is a specialization of bytes.EqualFold when s is
-// known to be all ASCII (including punctuation), but contains an 's',
-// 'S', 'k', or 'K', requiring a Unicode fold on the bytes in t.
-// See comments on foldFunc.
-func equalFoldRight(s, t []byte) bool {
-	for _, sb := range s {
-		if len(t) == 0 {
-			return false
-		}
-		tb := t[0]
-		if tb < utf8.RuneSelf {
-			if sb != tb {
-				sbUpper := sb & caseMask
-				if 'A' <= sbUpper && sbUpper <= 'Z' {
-					if sbUpper != tb&caseMask {
-						return false
-					}
-				} else {
-					return false
-				}
-			}
-			t = t[1:]
-			continue
-		}
-		// sb is ASCII and t is not. t must be either kelvin
-		// sign or long s; sb must be s, S, k, or K.
-		tr, size := utf8.DecodeRune(t)
-		switch sb {
-		case 's', 'S':
-			if tr != smallLongEss {
-				return false
-			}
-		case 'k', 'K':
-			if tr != kelvin {
-				return false
-			}
-		default:
-			return false
-		}
-		t = t[size:]
-
-	}
-	if len(t) > 0 {
-		return false
-	}
-	return true
-}
-
-// asciiEqualFold is a specialization of bytes.EqualFold for use when
-// s is all ASCII (but may contain non-letters) and contains no
-// special-folding letters.
-// See comments on foldFunc.
-func asciiEqualFold(s, t []byte) bool {
-	if len(s) != len(t) {
-		return false
-	}
-	for i, sb := range s {
-		tb := t[i]
-		if sb == tb {
-			continue
-		}
-		if ('a' <= sb && sb <= 'z') || ('A' <= sb && sb <= 'Z') {
-			if sb&caseMask != tb&caseMask {
-				return false
-			}
-		} else {
-			return false
-		}
-	}
-	return true
-}
-
-// simpleLetterEqualFold is a specialization of bytes.EqualFold for
-// use when s is all ASCII letters (no underscores, etc) and also
-// doesn't contain 'k', 'K', 's', or 'S'.
-// See comments on foldFunc.
-func simpleLetterEqualFold(s, t []byte) bool {
-	if len(s) != len(t) {
-		return false
-	}
-	for i, b := range s {
-		if b&caseMask != t[i]&caseMask {
-			return false
-		}
-	}
-	return true
-}
-
-func foldFunc(s []byte) func(s, t []byte) bool {
-	nonLetter := false
-	special := false // special letter
-	for _, b := range s {
-		if b >= utf8.RuneSelf {
-			return bytes.EqualFold
-		}
-		upper := b & caseMask
-		if upper < 'A' || upper > 'Z' {
-			nonLetter = true
-		} else if upper == 'K' || upper == 'S' {
-			// See above for why these letters are special.
-			special = true
-		}
-	}
-	if special {
-		return equalFoldRight
-	}
-	if nonLetter {
-		return asciiEqualFold
-	}
-	return simpleLetterEqualFold
-}
 
 // A field represents a single field found in a struct.
 type field struct {
 	name      string
 	nameBytes []byte                 // []byte(name)
-	equalFold func(s, t []byte) bool // bytes.EqualFold or equivalent
 
 	tag       bool
 	index     []int
@@ -297,7 +176,6 @@ type field struct {
 
 func fillField(f field) field {
 	f.nameBytes = []byte(f.name)
-	f.equalFold = foldFunc(f.nameBytes)
 	return f
 }