107 lines
2 KiB
Go
107 lines
2 KiB
Go
package dbidentifier
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import (
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"github.com/Gleipnir-Technology/jet/internal/3rdparty/snaker"
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"strings"
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"unicode"
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)
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// ToGoIdentifier converts database identifier to Go identifier.
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func ToGoIdentifier(databaseIdentifier string) string {
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return snaker.SnakeToCamel(replaceInvalidChars(databaseIdentifier))
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}
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// ToGoFileName converts database identifier to Go file name.
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func ToGoFileName(databaseIdentifier string) string {
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return strings.ToLower(replaceInvalidChars(databaseIdentifier))
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}
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func replaceInvalidChars(identifier string) string {
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increase, needs := needsCharReplacement(identifier)
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if !needs {
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return identifier
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}
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var b strings.Builder
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b.Grow(len(identifier) + increase)
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for _, c := range identifier {
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switch {
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case unicode.IsSpace(c):
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b.WriteByte('_')
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case unicode.IsControl(c):
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continue
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default:
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replacement, ok := asciiCharacterReplacement[c]
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if ok {
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b.WriteByte('_')
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b.WriteString(replacement)
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b.WriteByte('_')
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} else {
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b.WriteRune(c)
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}
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}
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}
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return b.String()
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}
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func needsCharReplacement(identifier string) (increase int, needs bool) {
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for _, c := range identifier {
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switch {
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case unicode.IsSpace(c):
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needs = true
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case unicode.IsControl(c):
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increase += -1
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needs = true
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continue
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default:
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replacement, ok := asciiCharacterReplacement[c]
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if ok {
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increase += len(replacement) + 1
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needs = true
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}
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}
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}
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return increase, needs
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}
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var asciiCharacterReplacement = map[rune]string{
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'!': "exclamation",
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'"': "quotation",
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'#': "number",
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'$': "dollar",
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'%': "percent",
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'&': "ampersand",
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'\'': "apostrophe",
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'(': "opening_parentheses",
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')': "closing_parentheses",
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'*': "asterisk",
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'+': "plus",
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',': "comma",
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'-': "_",
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'.': "_",
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'/': "slash",
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':': "colon",
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';': "semicolon",
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'<': "less",
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'=': "equal",
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'>': "greater",
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'?': "question",
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'@': "at",
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'[': "opening_bracket",
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'\\': "backslash",
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']': "closing_bracket",
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'^': "caret",
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'`': "accent",
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'{': "opening_braces",
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'|': "vertical_bar",
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'}': "closing_braces",
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'~': "tilde",
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}
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