/
run.go
110 lines (101 loc) · 2.07 KB
/
run.go
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package run
import (
"fmt"
"os"
"os/exec"
"strings"
"syscall"
"time"
"github.com/spf13/viper"
)
// Run stuff..
func Run(args []string) error {
cfg, err := AutoLoadConfig()
if err != nil {
return err
}
cn := args[0]
var transformerNames []string
transformersArg := viper.GetStringSlice("transformers")
if len(transformersArg) != 0 {
transformerNames = transformersArg
} else {
cmd := cfg.CommandLookup[cn]
if cmd == nil {
return fmt.Errorf("Could not find command %s in config and no '--transformers' provided", cn)
}
transformerNames = cmd.Transformers
}
transformers, err := cfg.getTransformers(transformerNames...)
if err != nil {
return err
}
cacheFile := viper.GetString("cacheFile")
c, err := loadCache(cacheFile)
if err != nil {
return err
}
defer saveCache(c, cacheFile)
args = args[1:]
var nargs []string
for _, f := range transformers {
nargs = nil
for i, _ := range args {
m, err := f.CheckMatch(args, i)
if err != nil {
return err
}
if m == nil {
nargs = append(nargs, args[i])
continue
}
var v string
key := f.Key(args[i])
vi, ok := c.Get(key)
if ok {
log.Debugf("Cache hit")
v = vi.(string)
} else {
v, err = f.Run(args, i, m)
if err != nil {
return err
}
if f.Cache > 0 {
c.Set(key, v, time.Duration(f.Cache)*time.Second)
}
}
for _, nv := range strings.Split(v, "\n") {
nargs = append(nargs, nv)
}
}
args = make([]string, len(nargs))
copy(args, nargs)
log.Debugf("Current args: %v", args)
}
// Insert command at the front
args = append(args, "")
copy(args[1:], args)
args[0] = cn
path := cn
// expand to full path
if !strings.HasPrefix(path, "/") {
if path, err = exec.LookPath(path); err != nil {
return err
}
}
noop := viper.GetBool("noop")
verbose := viper.GetBool("verbose")
if noop || verbose {
fmt.Println(strings.Join(args, " "))
if noop {
return nil
}
}
if err := saveCache(c, cacheFile); err != nil {
return err
}
if err := syscall.Exec(path, args, os.Environ()); err != nil {
return err
}
return nil
}