--- /dev/null
+#ifndef JIM_NVP_H
+#define JIM_NVP_H
+
+#include <jim.h>
+
+/** Name Value Pairs, aka: NVP
+ * - Given a string - return the associated int.
+ * - Given a number - return the associated string.
+ * .
+ *
+ * Very useful when the number is not a simple index into an array of
+ * known string, or there may be multiple strings (aliases) that mean then same
+ * thing.
+ *
+ * An NVP Table is terminated with ".name = NULL".
+ *
+ * During the 'name2value' operation, if no matching string is found
+ * the pointer to the terminal element (with p->name == NULL) is returned.
+ *
+ * Example:
+ * \code
+ * const Jim_Nvp yn[] = {
+ * { "yes", 1 },
+ * { "no" , 0 },
+ * { "yep", 1 },
+ * { "nope", 0 },
+ * { NULL, -1 },
+ * };
+ *
+ * Jim_Nvp *result
+ * e = Jim_Nvp_name2value(interp, yn, "y", &result);
+ * returns &yn[0];
+ * e = Jim_Nvp_name2value(interp, yn, "n", &result);
+ * returns &yn[1];
+ * e = Jim_Nvp_name2value(interp, yn, "Blah", &result);
+ * returns &yn[4];
+ * \endcode
+ *
+ * During the number2name operation, the first matching value is returned.
+ */
+typedef struct {
+ const char *name;
+ int value;
+} Jim_Nvp;
+
+
+int Jim_GetNvp (Jim_Interp *interp,
+ Jim_Obj *objPtr,
+ const Jim_Nvp *nvp_table,
+ const Jim_Nvp **result);
+
+/* Name Value Pairs Operations */
+Jim_Nvp *Jim_Nvp_name2value_simple(const Jim_Nvp *nvp_table, const char *name);
+Jim_Nvp *Jim_Nvp_name2value_nocase_simple(const Jim_Nvp *nvp_table, const char *name);
+Jim_Nvp *Jim_Nvp_value2name_simple(const Jim_Nvp *nvp_table, int v);
+
+int Jim_Nvp_name2value(Jim_Interp *interp, const Jim_Nvp *nvp_table, const char *name, Jim_Nvp **result);
+int Jim_Nvp_name2value_nocase(Jim_Interp *interp, const Jim_Nvp *nvp_table, const char *name, Jim_Nvp **result);
+int Jim_Nvp_value2name(Jim_Interp *interp, const Jim_Nvp *nvp_table, int value, Jim_Nvp **result);
+
+int Jim_Nvp_name2value_obj(Jim_Interp *interp, const Jim_Nvp *nvp_table, Jim_Obj *name_obj, Jim_Nvp **result);
+int Jim_Nvp_name2value_obj_nocase(Jim_Interp *interp, const Jim_Nvp *nvp_table, Jim_Obj *name_obj, Jim_Nvp **result);
+int Jim_Nvp_value2name_obj(Jim_Interp *interp, const Jim_Nvp *nvp_table, Jim_Obj *value_obj, Jim_Nvp **result);
+
+/** prints a nice 'unknown' parameter error message to the 'result' */
+void Jim_SetResult_NvpUnknown(Jim_Interp *interp,
+ Jim_Obj *param_name,
+ Jim_Obj *param_value,
+ const Jim_Nvp *nvp_table);
+
+
+/** Debug: convert argc/argv into a printable string for printf() debug
+ *
+ * \param interp - the interpeter
+ * \param argc - arg count
+ * \param argv - the objects
+ *
+ * \returns string pointer holding the text.
+ *
+ * Note, next call to this function will free the old (last) string.
+ *
+ * For example might want do this:
+ * \code
+ * fp = fopen("some.file.log", "a");
+ * fprintf(fp, "PARAMS are: %s\n", Jim_DebugArgvString(interp, argc, argv));
+ * fclose(fp);
+ * \endcode
+ */
+const char *Jim_Debug_ArgvString(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
+
+
+/** A TCL -ish GetOpt like code.
+ *
+ * Some TCL objects have various "configuration" values.
+ * For example - in Tcl/Tk the "buttons" have many options.
+ *
+ * Usefull when dealing with command options.
+ * that may come in any order...
+ *
+ * Does not support "-foo = 123" type options.
+ * Only supports tcl type options, like "-foo 123"
+ */
+
+typedef struct jim_getopt {
+ Jim_Interp *interp;
+ int argc;
+ Jim_Obj * const * argv;
+ int isconfigure; /* non-zero if configure */
+} Jim_GetOptInfo;
+
+/** GetOpt - how to.
+ *
+ * Example (short and incomplete):
+ * \code
+ * Jim_GetOptInfo goi;
+ *
+ * Jim_GetOpt_Setup(&goi, interp, argc, argv);
+ *
+ * while (goi.argc) {
+ * e = Jim_GetOpt_Nvp(&goi, nvp_options, &n);
+ * if (e != JIM_OK) {
+ * Jim_GetOpt_NvpUnknown(&goi, nvp_options, 0);
+ * return e;
+ * }
+ *
+ * switch (n->value) {
+ * case ALIVE:
+ * printf("Option ALIVE specified\n");
+ * break;
+ * case FIRST:
+ * if (goi.argc < 1) {
+ * .. not enough args error ..
+ * }
+ * Jim_GetOpt_String(&goi, &cp, NULL);
+ * printf("FIRSTNAME: %s\n", cp);
+ * case AGE:
+ * Jim_GetOpt_Wide(&goi, &w);
+ * printf("AGE: %d\n", (int)(w));
+ * break;
+ * case POLITICS:
+ * e = Jim_GetOpt_Nvp(&goi, nvp_politics, &n);
+ * if (e != JIM_OK) {
+ * Jim_GetOpt_NvpUnknown(&goi, nvp_politics, 1);
+ * return e;
+ * }
+ * }
+ * }
+ *
+ * \endcode
+ *
+ */
+
+/** Setup GETOPT
+ *
+ * \param goi - get opt info to be initialized
+ * \param interp - jim interp
+ * \param argc - argc count.
+ * \param argv - argv (will be copied)
+ *
+ * \code
+ * Jim_GetOptInfo goi;
+ *
+ * Jim_GetOptSetup(&goi, interp, argc, argv);
+ * \endcode
+ */
+
+int Jim_GetOpt_Setup(Jim_GetOptInfo *goi,
+ Jim_Interp *interp,
+ int argc,
+ Jim_Obj * const * argv);
+
+
+/** Debug - Dump parameters to stderr
+ * \param goi - current parameters
+ */
+void Jim_GetOpt_Debug(Jim_GetOptInfo *goi);
+
+
+
+/** Remove argv[0] from the list.
+ *
+ * \param goi - get opt info
+ * \param puthere - where param is put
+ *
+ */
+int Jim_GetOpt_Obj(Jim_GetOptInfo *goi, Jim_Obj **puthere);
+
+/** Remove argv[0] as string.
+ *
+ * \param goi - get opt info
+ * \param puthere - where param is put
+ * \param len - return its length
+ */
+int Jim_GetOpt_String(Jim_GetOptInfo *goi, char **puthere, int *len);
+
+/** Remove argv[0] as double.
+ *
+ * \param goi - get opt info
+ * \param puthere - where param is put.
+ *
+ */
+int Jim_GetOpt_Double(Jim_GetOptInfo *goi, double *puthere);
+
+/** Remove argv[0] as wide.
+ *
+ * \param goi - get opt info
+ * \param puthere - where param is put.
+ */
+int Jim_GetOpt_Wide(Jim_GetOptInfo *goi, jim_wide *puthere);
+
+/** Remove argv[0] as NVP.
+ *
+ * \param goi - get opt info
+ * \param lookup - nvp lookup table
+ * \param puthere - where param is put.
+ *
+ */
+int Jim_GetOpt_Nvp(Jim_GetOptInfo *goi, const Jim_Nvp *lookup, Jim_Nvp **puthere);
+
+/** Create an appropriate error message for an NVP.
+ *
+ * \param goi - options info
+ * \param lookup - the NVP table that was used.
+ * \param hadprefix - 0 or 1 if the option had a prefix.
+ *
+ * This function will set the "interp->result" to a human readable
+ * error message listing the available options.
+ *
+ * This function assumes the previous option argv[-1] is the unknown string.
+ *
+ * If this option had some prefix, then pass "hadprefix = 1" else pass "hadprefix = 0"
+ *
+ * Example:
+ * \code
+ *
+ * while (goi.argc) {
+ * // Get the next option
+ * e = Jim_GetOpt_Nvp(&goi, cmd_options, &n);
+ * if (e != JIM_OK) {
+ * // option was not recognized
+ * // pass 'hadprefix = 0' because there is no prefix
+ * Jim_GetOpt_NvpUnknown(&goi, cmd_options, 0);
+ * return e;
+ * }
+ *
+ * switch (n->value) {
+ * case OPT_SEX:
+ * // handle: --sex male | female | lots | needmore
+ * e = Jim_GetOpt_Nvp(&goi, &nvp_sex, &n);
+ * if (e != JIM_OK) {
+ * Jim_GetOpt_NvpUnknown(&ogi, nvp_sex, 1);
+ * return e;
+ * }
+ * printf("Code: (%d) is %s\n", n->value, n->name);
+ * break;
+ * case ...:
+ * [snip]
+ * }
+ * }
+ * \endcode
+ *
+ */
+void Jim_GetOpt_NvpUnknown(Jim_GetOptInfo *goi, const Jim_Nvp *lookup, int hadprefix);
+
+
+/** Remove argv[0] as Enum
+ *
+ * \param goi - get opt info
+ * \param lookup - lookup table.
+ * \param puthere - where param is put.
+ *
+ */
+int Jim_GetOpt_Enum(Jim_GetOptInfo *goi, const char * const * lookup, int *puthere);
+
+#endif
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