add man(1) generation

1 files changed, 60 insertions, 0 deletions

diff --git a/spool/exit.go b/spool/exit.go
new file mode 100644
index 0000000..efe9d4e
--- /dev/null
+++ b/spool/exit.go
@@ -0,0 +1,60 @@
+package spool
+
+import (
+	"github.com/ewy1/pik/paths"
+	"os"
+)
+
+type ExitCode struct {
+	Value   int
+	Message string
+}
+
+var (
+	Success                           = New(0, "succesful")
+	Cancelled                         = New(0, "operation cancelled by user")
+	NotFoundFailure                   = Cancelled.Next("target not found")
+	FatalReadFailure                  = NotFoundFailure.Next("fatal failure during initialization")
+	FatalWriteFailure                 = FatalReadFailure.Next("fatal failure during file write")
+	WorkingDirectoryFailure           = FatalWriteFailure.Next("could not get current working directory")
+	OpenRootFailure                   = WorkingDirectoryFailure.Next("failed to init root directory")
+	RootFsFailure                     = OpenRootFailure.Next("failed to make fs from root")
+	CacheReadFailure                  = RootFsFailure.Next("failed to read cache (from " + paths.ContextsFile.String())
+	HydrationFailure                  = CacheReadFailure.Next("a hydrator failed")
+	MenuFailure                       = HydrationFailure.Next("error during menu")
+	NoTargetsFailure                  = MenuFailure.Next("no targets found")
+	NoEditorFailure                   = NoTargetsFailure.Next("$EDITOR not set")
+	NoDebugInfo                       = NoEditorFailure.Next("could not read debug info")
+	ManFailure                        = New(120, "failure to generate manual pages")
+	UnknownShellFailure               = New(110, "unable to detect shell type through $SHELL")
+	CompletionAlreadyInstalledFailure = UnknownShellFailure.Next("completion seems already installed")
+	CompletionFailure                 = CompletionAlreadyInstalledFailure.Next("failed to install completion")
+	ProfilingFailure                  = CompletionFailure.Next("failed to initialize profiler")
+)
+
+var Codes []ExitCode
+var CodeMap = make(map[int]*ExitCode)
+
+func New(num int, message string) ExitCode {
+	if CodeMap[num] != nil && num != 0 {
+		_, _ = Warn("redefined error code: %v", num)
+	}
+	c := ExitCode{
+		Value:   num,
+		Message: message,
+	}
+	Codes = append(Codes, c)
+	CodeMap[num] = &c
+	return c
+}
+
+func (e ExitCode) Exit() {
+	os.Exit(e.Value)
+}
+
+func (e ExitCode) Next(message string) ExitCode {
+	return New(
+		e.Value+1,
+		message,
+	)
+}