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package bibtex
import (
"bytes"
"strconv"
"strings"
)
type Value interface {
Marshal() string
String() string
}
type BraceLiteral string
type StringLiteral string
type NumberLiteral int
type VarLiteral struct {
Name string
Value *Value
}
type LiteralList []Value
func (l BraceLiteral) String() string {
return string(l)
}
func (l BraceLiteral) Marshal() string {
return "{" + string(l) + "}"
}
func (l StringLiteral) String() string {
return string(l)
}
func (l StringLiteral) Marshal() string {
return "\"" + string(l) + "\""
}
func (l NumberLiteral) Marshal() string {
return strconv.Itoa(int(l))
}
func (l NumberLiteral) String() string {
return strconv.Itoa(int(l))
}
func (l VarLiteral) String() string {
return (*l.Value).String()
}
func (l VarLiteral) Marshal() string {
return l.Name
}
func (l LiteralList) String() string {
var buf bytes.Buffer
for _, lit := range l {
buf.WriteString(lit.String())
}
return buf.String()
}
func (l LiteralList) Marshal() string {
res := make([]string, len(l))
for i, lit := range l {
res[i] = lit.Marshal()
}
return strings.Join(res, " # ")
}
func flatten(v Value) Value {
switch t := v.(type) {
case LiteralList:
if len(t) == 1 {
return flatten(t[0])
} else {
return BraceLiteral(t.String())
}
case VarLiteral:
return flatten(*t.Value)
default:
return v
}
}
type Entry struct {
Type string `json:"type"`
Key string `json:"key"`
Fields map[string]Value `json:"fields"`
FNames []string `json:"-"`
}
func (e Entry) Marshal() string {
var buf bytes.Buffer
temp := make([]string, len(e.FNames))
open, close := "{", "}"
if strings.Contains(e.Key, "}") {
open, close = "(", ")"
}
buf.WriteString("@" + e.Type + open + e.Key + ",")
if len(e.FNames) == 0 {
buf.WriteString(close)
return buf.String()
} else {
buf.WriteString("\n\t")
}
for i, field := range e.FNames {
temp[i] = field + " = " + e.Fields[field].Marshal()
}
buf.WriteString(strings.Join(temp, ",\n\t"))
buf.WriteString("\n" + close)
return buf.String()
}
type Database struct {
SNames []string `json:"-"`
Strings map[string]Value `json:"strings,omitempty"`
Entries map[string]Entry `json:"entries"`
Preamble Value `json:"preamble,omitempty"`
EKeys []string `json:"-"`
CrossRefs map[string]int `json:"crossrefs,omitempty"`
}
func (d *Database) UnTex() {
for _, entry := range d.Entries {
for field, value := range entry.Fields {
switch v := value.(type) {
case BraceLiteral:
entry.Fields[field] = BraceLiteral(UnTex(v.String()))
case StringLiteral:
entry.Fields[field] = StringLiteral(UnTex(v.String()))
case Names:
v.untex()
}
}
}
}
func (d *Database) Flatten() {
for _, entry := range d.Entries {
for field, value := range entry.Fields {
entry.Fields[field] = flatten(value)
}
}
}
func (d *Database) SplitNames() {
for _, entry := range d.Entries {
for field, value := range entry.Fields {
if field == "author" || field == "editor" {
entry.Fields[field] = SplitNames(value.String())
}
}
}
}
func (d *Database) Resolve() {
var key string
var ref Entry
for _, entry := range d.Entries {
for field, value := range entry.Fields {
if field != "crossref" {
continue
}
key = strings.ToLower(value.String())
ref = d.Entries[key]
for f, v := range ref.Fields {
if _, in := entry.Fields[f]; !in {
entry.Fields[f] = v
entry.FNames = append(entry.FNames, f)
}
}
}
}
}
|
