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cmd/simplexcalc/ now holds only main.go: it passes the version the linker sets to cli.Main and exits with the status that returns. root.go and run.go move to internal/cli with their comments, changed only to take the version as a parameter. Main reads the process's arguments and output; execute takes them as parameters so the new tests can check the version line and the non-zero status of an unknown command. Commands, flags, output, log lines and exit status are unchanged, and the -X main.version flag in the Dockerfile still applies. Model: opus-5-5
39 lines
995 B
Go
39 lines
995 B
Go
// Package cli is the simplexcalc command tree: the run and version
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// commands, and the exit status the program ends with.
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package cli
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import (
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"fmt"
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"io"
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"os"
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)
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// appname is the name the program reports in its logs and its version.
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const appname = "simplexcalc"
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// Main runs the command named on the command line and returns the exit
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// status for main to pass to os.Exit.
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func Main(version string) int {
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return execute(version, os.Args[1:], os.Stdout, os.Stderr)
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}
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// execute is Main with the arguments and the output passed in, so that
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// a test can supply them.
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func execute(version string, args []string, stdout, stderr io.Writer) int {
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root := rootCmd(version)
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root.SetArgs(args)
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root.SetOut(stdout)
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root.SetErr(stderr)
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err := root.Execute()
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if err != nil {
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// cobra has already printed the error; this only sets the exit
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// status, which is what a supervisor and a shell script read.
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_, _ = fmt.Fprintln(stderr, "exiting: "+err.Error())
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return 1
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}
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return 0
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}
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