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package pterm
import (
"fmt"
"io"
"strings"
)
// DefaultSection is the default section printer.
var DefaultSection = SectionPrinter{
Style: &ThemeDefault.SectionStyle,
Level: 1,
TopPadding: 1,
BottomPadding: 1,
IndentCharacter: "#",
}
// SectionPrinter prints a new section title.
// It can be used to structure longer text, or different chapters of your program.
type SectionPrinter struct {
Style *Style
Level int
IndentCharacter string
TopPadding int
BottomPadding int
Writer io.Writer
}
// WithStyle returns a new SectionPrinter with a specific style.
func (p SectionPrinter) WithStyle(style *Style) *SectionPrinter {
p.Style = style
return &p
}
// WithLevel returns a new SectionPrinter with a specific level.
func (p SectionPrinter) WithLevel(level int) *SectionPrinter {
p.Level = level
return &p
}
// WithIndentCharacter returns a new SectionPrinter with a specific IndentCharacter.
func (p SectionPrinter) WithIndentCharacter(char string) *SectionPrinter {
p.IndentCharacter = char
return &p
}
// WithTopPadding returns a new SectionPrinter with a specific top padding.
func (p SectionPrinter) WithTopPadding(padding int) *SectionPrinter {
p.TopPadding = padding
return &p
}
// WithBottomPadding returns a new SectionPrinter with a specific top padding.
func (p SectionPrinter) WithBottomPadding(padding int) *SectionPrinter {
p.BottomPadding = padding
return &p
}
// WithWriter sets the custom Writer.
func (p SectionPrinter) WithWriter(writer io.Writer) *SectionPrinter {
p.Writer = writer
return &p
}
// Sprint formats using the default formats for its operands and returns the resulting string.
// Spaces are added between operands when neither is a string.
func (p SectionPrinter) Sprint(a ...interface{}) string {
if p.Style == nil {
p.Style = NewStyle()
}
var ret string
for i := 0; i < p.TopPadding; i++ {
ret += "\n"
}
if p.Level > 0 {
ret += strings.Repeat(p.IndentCharacter, p.Level) + " "
}
ret += p.Style.Sprint(a...)
for i := 0; i < p.BottomPadding; i++ {
ret += "\n"
}
return ret
}
// Sprintln formats using the default formats for its operands and returns the resulting string.
// Spaces are always added between operands and a newline is appended.
func (p SectionPrinter) Sprintln(a ...interface{}) string {
str := fmt.Sprintln(a...)
return Sprint(p.Sprint(str))
}
// Sprintf formats according to a format specifier and returns the resulting string.
func (p SectionPrinter) Sprintf(format string, a ...interface{}) string {
return p.Sprint(Sprintf(format, a...))
}
// Sprintfln formats according to a format specifier and returns the resulting string.
// Spaces are always added between operands and a newline is appended.
func (p SectionPrinter) Sprintfln(format string, a ...interface{}) string {
return p.Sprintf(format, a...) + "\n"
}
// Print formats using the default formats for its operands and writes to standard output.
// Spaces are added between operands when neither is a string.
// It returns the number of bytes written and any write error encountered.
func (p *SectionPrinter) Print(a ...interface{}) *TextPrinter {
Fprint(p.Writer, p.Sprint(a...))
tp := TextPrinter(p)
return &tp
}
// Println formats using the default formats for its operands and writes to standard output.
// Spaces are always added between operands and a newline is appended.
// It returns the number of bytes written and any write error encountered.
func (p *SectionPrinter) Println(a ...interface{}) *TextPrinter {
Fprint(p.Writer, p.Sprintln(a...))
tp := TextPrinter(p)
return &tp
}
// Printf formats according to a format specifier and writes to standard output.
// It returns the number of bytes written and any write error encountered.
func (p *SectionPrinter) Printf(format string, a ...interface{}) *TextPrinter {
Fprint(p.Writer, p.Sprintf(format, a...))
tp := TextPrinter(p)
return &tp
}
// Printfln formats according to a format specifier and writes to standard output.
// Spaces are always added between operands and a newline is appended.
// It returns the number of bytes written and any write error encountered.
func (p *SectionPrinter) Printfln(format string, a ...interface{}) *TextPrinter {
Fprint(p.Writer, p.Sprintfln(format, a...))
tp := TextPrinter(p)
return &tp
}
// PrintOnError prints every error which is not nil.
// If every error is nil, nothing will be printed.
// This can be used for simple error checking.
func (p *SectionPrinter) PrintOnError(a ...interface{}) *TextPrinter {
for _, arg := range a {
if err, ok := arg.(error); ok {
if err != nil {
p.Println(err)
}
}
}
tp := TextPrinter(p)
return &tp
}
// PrintOnErrorf wraps every error which is not nil and prints it.
// If every error is nil, nothing will be printed.
// This can be used for simple error checking.
func (p *SectionPrinter) PrintOnErrorf(format string, a ...interface{}) *TextPrinter {
for _, arg := range a {
if err, ok := arg.(error); ok {
if err != nil {
p.Println(fmt.Errorf(format, err))
}
}
}
tp := TextPrinter(p)
return &tp
}
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