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woodpecker/pkg/build/buildfile/buildfile.go

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2014-02-07 13:10:01 +03:00
package buildfile
import (
"bytes"
"fmt"
)
type Buildfile struct {
bytes.Buffer
}
func New() *Buildfile {
b := Buildfile{}
b.WriteString(base)
return &b
}
// WriteCmd writes a command to the build file. The
// command will be echoed back as a base16 encoded
// command so that it can be parsed and appended to
// the build output
func (b *Buildfile) WriteCmd(command string) {
// echo the command as an encoded value
b.WriteString(fmt.Sprintf("echo '#DRONE:%x'\n", command))
// and then run the command
b.WriteString(fmt.Sprintf("%s\n", command))
}
// WriteCmdSilent writes a command to the build file
// but does not echo the command.
func (b *Buildfile) WriteCmdSilent(command string) {
b.WriteString(fmt.Sprintf("%s\n", command))
}
// WriteComment adds a comment to the build file. This
// is really only used internally for debugging purposes.
func (b *Buildfile) WriteComment(comment string) {
b.WriteString(fmt.Sprintf("#%s\n", comment))
}
// WriteEnv exports the environment variable as
// part of the script. The environment variables
// are not echoed back to the console, and are
// kept private by default.
func (b *Buildfile) WriteEnv(key, value string) {
b.WriteString(fmt.Sprintf("export %s=%s\n", key, value))
}
// every build script starts with the following
// code at the start.
var base = `
#!/bin/bash
# drone configuration files are stored in /etc/drone.d
# execute these files prior to our build to set global
# environment variables and initialize programs (like rbenv)
if [ -d /etc/drone.d ]; then
for i in /etc/drone.d/*.sh; do
if [ -r $i ]; then
. $i
fi
done
unset i
fi
# be sure to exit on error and print out
# our bash commands, so we can which commands
# are executing and troubleshoot failures.
set -e
# user-defined commands below ##############################
`