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|
package build
import (
"fmt"
"sort"
"strconv"
"strings"
)
type Instruction interface {
Compile() []string
}
type Run struct {
Command string
Arguments []string
}
func (run Run) Compile() []string {
numInnerArgs := strings.Count(run.Command, `%`) - strings.Count(run.Command, `%%`)
command := sprintf(run.Command, run.Arguments[0:numInnerArgs])
if len(run.Arguments) > numInnerArgs {
command += " " + strings.Join(quoteAll(run.Arguments[numInnerArgs:]), " ")
}
return []string{command}
}
type RunAll struct {
Runs []Run
}
func (runAll RunAll) Compile() []string {
commands := make([]string, len(runAll.Runs))
for i, run := range runAll.Runs {
commands[i] = run.Compile()[0]
}
return []string{strings.Join(commands, " && ")}
}
type Copy struct {
Sources []string
Destination string
}
func (copy Copy) Compile() []string {
return append(quoteAll(copy.Sources), quote(copy.Destination))
}
type CopyFrom struct {
From string
Copy
}
func (cf CopyFrom) Compile() []string {
return append([]string{cf.From}, cf.Copy.Compile()...)
}
type Env struct {
Definitions map[string]string
}
func (env Env) Compile() []string {
return compileSortedKeyValues(env.Definitions)
}
// Label represents a number of meta-data key/value pairs
type Label struct {
Definitions map[string]string
}
// Compile returns the label key/value pairs as a number of `key="value"`
// strings where the values are properly quoted
func (label Label) Compile() []string {
return compileSortedKeyValues(label.Definitions)
}
type Volume struct {
Path string
}
func (vol Volume) Compile() []string {
return []string{quote(vol.Path)}
}
func compileSortedKeyValues(keyValues map[string]string) []string {
defs := make([]string, 0, len(keyValues))
names := make([]string, 0, len(keyValues))
for name := range keyValues {
names = append(names, name)
}
sort.Strings(names)
for _, name := range names {
defs = append(defs, name+"="+quote(keyValues[name]))
}
return defs
}
func quote(arg string) string {
return strconv.Quote(arg)
}
func quoteAll(arguments []string) []string {
quoted := make([]string, len(arguments))
for i, arg := range arguments {
quoted[i] = quote(arg)
}
return quoted
}
func sprintf(format string, arguments []string) string {
args := make([]interface{}, len(arguments))
for i, v := range arguments {
args[i] = quote(v)
}
return fmt.Sprintf(format, args...)
}
|
