1 files changed, 133 insertions, 0 deletions
diff --git a/parseArgv.go b/parseArgv.go
new file mode 100644
index 0000000..1fdaf5f
--- /dev/null
+++ b/parseArgv.go
@@ -0,0 +1,133 @@
+package prep
+
+// initializes logging and command line options
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"go.wit.com/log"
+)
+
+func parseArgv(argname string) *Auto {
+	pb := new(Auto)
+	pb.Argname = argname
+	if len(os.Args) == 0 {
+		return pb
+	}
+
+	if len(os.Args) > 1 && os.Args[1] == "--bash" {
+		pb.SetupAuto = true
+		return pb
+	}
+
+	// HACK: set debug flag if --autodebug is passed
+	for _, s := range os.Args {
+		if s == "--autodebug" {
+			pb.Debug = true
+		}
+	}
+
+	// "complete -C /usr/bin/argv forge" bash ENV values:
+	//    * `COMP_LINE`: A string containing the entire current command line (forge first second third forth ). This is what you are looking for.
+	//    * `COMP_POINT`: A number indicating the cursor's position (index) within the COMP_LINE.
+	//    * `COMP_WORDS`: An array in Bash (seen differently by Go) containing each individual word on the command line.
+	//    * `COMP_CWORD`: A number indicating the index of the word the cursor is currently on within the COMP_WORDS array.
+	if len(os.Args) > 1 && os.Args[1] == pb.Argname {
+		pb.IsAuto = true
+		parts := strings.Split(os.Getenv("COMP_LINE"), " ")
+		pb.Debug = true
+		log.Fprintf(os.Stderr, "\n")
+		pb.Debugf("MATCH Partial os.Args=%v COMP_LINE=%v", os.Args, os.Getenv("COMP_LINE"))
+		// log.Fprintf(os.Stdout, "jcarr")
+		if len(parts) > 0 {
+			pb.Arg0 = parts[0]
+		}
+		pb.Arg1 = os.Args[1]
+		os.Exit(0)
+	}
+
+	if len(os.Args) > 1 && os.Args[1] == "--version" {
+		if myAuto.buildtime != nil {
+			// if binary defined buildtime() then process standard version output here
+			doVersion(pb)
+			os.Exit(0)
+		}
+	}
+	if len(os.Args) == 0 {
+		return pb
+	}
+
+	if len(os.Args) == 1 {
+		pb.Arg0 = os.Args[0]
+		return pb
+	}
+	if os.Args[1] != "--auto-complete" {
+		pb.Cmd = os.Args[1]
+		return pb
+	}
+
+	// should we do auto complete here?
+	if len(os.Args) > 1 && os.Args[1] == "--auto-complete" {
+		pb.IsAuto = true
+		pb.Arg0 = os.Args[0]
+		pb.Arg1 = os.Args[1]
+		pb.Partial = os.Args[2]
+		pb.Arg3 = os.Args[3]
+		if len(os.Args) < 5 {
+			// the user is doing autocomplete on the command itself
+			pb.Partial = ""
+			pb.Cmd = ""
+			pb.Argv = []string{""}
+			return pb
+		}
+		if pb.Partial == "''" {
+			pb.Partial = ""
+		}
+		// pb.Argv = os.Args[4:]
+		for _, s := range os.Args[4:] {
+			if s == "--autodebug" {
+				continue
+			}
+			tmp := strings.Trim(pb.Partial, "'")
+			if tmp == s {
+				// don't put pb.Partial into Argv
+				continue
+			}
+			pb.Argv = append(pb.Argv, s)
+		}
+		// set pb.Cmd to the first thing that doesn't have a '-' arg
+		for _, s := range pb.Argv {
+			if strings.HasPrefix(s, "-") {
+				continue
+			}
+			pb.Cmd = s
+			break
+		}
+		if pb.Partial == "'"+pb.Cmd+"'" {
+			// not really a command, it's just a partially inputed string from the user
+			pb.Cmd = ""
+		}
+		// try to figure out what the last argv is
+		for _, s := range pb.Argv {
+			p := fmt.Sprintf("'%s'", s)
+			if pb.Partial == p {
+				pb.Debugf("DEBUG: Last argv MATCHES Partial %s %s", s, p)
+				continue
+			} else {
+				pb.Debugf("DEBUG: Last argv DOES NOT MATCH Partial %s %s", s, p)
+			}
+			pb.Last = s
+			if strings.HasPrefix(s, "-") {
+				// skip args like -test --verbose when sending subcommands to go-args for help text
+				continue
+			}
+			pb.Goargs = append(pb.Goargs, s)
+		}
+		// if pb.Cmd == "" {
+		// 	pb.Cmd = strings.Join(pb.Argv, "BLAH")
+		// }
+	}
+	return pb
+}