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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <tcl.h>
#include "misc.h"
#include "io_utils.h" /* io_handle() */
/*
typedef int GapIO;
GapIO *io_handle(int *x) {}
*/
#include "gap_cli_arg.h"
static void parse_args_set(cli_args *a, char *store, char *val) {
if (a->type == ARG_STR) {
*((char **)&store[a->offset]) = val;
} else if (a->type == ARG_ARR) {
strncpy((char *)&store[a->offset], val, a->value-1);
} else if (a->type == ARG_IO) {
int handle = atoi(val);
GapIO *io = io_handle(&handle);
if (io)
*((GapIO **)&store[a->offset]) = io;
else
return; /* Doesn't set a->def */
} else if (a->type == ARG_INT) {
*((int *)&store[a->offset]) = atoi(val);
} else if (a->type == ARG_OBJ) {
/* Cannot initialise objs */
*((Tcl_Obj **)&store[a->offset]) = NULL;
} else if (a->type == ARG_FLOAT) {
*((float *)&store[a->offset]) = atof(val);
} else if (a->type == ARG_DOUBLE) {
*((double *)&store[a->offset]) = atof(val);
} else {
fprintf(stderr, "Unknown argument type %d\n", a->type);
}
a->def = ""; /* mark as used */
}
/*
* Parses command line arguments.
* 'args' specifies an array cli_args. Each cli_arg contains a default. Each
* argument with a default of NULL are non optional. This function will return
* -1 if any of these arguments aren't specified, or if unknown arguments
* are specified. Returns 0 otherwise.
*/
int gap_parse_args(cli_args *args, void *store, int argc, char **argv) {
cli_args *a;
int ret;
/* Initialise defaults */
for (a = args; a->command; a++)
if (a->def)
parse_args_set(a, store, a->def);
else if (a->type == ARG_ARR)
memset((char *)&((char *)store)[a->offset], 0, a->value); /* YUK */
ret = gap_parse_config(args, store, argc, argv);
/* Check all required options were set */
for (a = args; a->command; a++)
if (!a->def) {
verror(ERR_WARN, "parse_args",
"No argument given for option '%s'\n",
a->command);
return -1;
}
return ret;
}
int gap_parse_config(cli_args *args, void *store, int argc, char **argv) {
int i, ret = 0;
cli_args *a;
char *aname;
for (i = 1; i < argc; i++) {
aname = argv[i];
for (a = args; a->command; a++) {
if (strcmp(a->command, aname)== 0) {
if (a->value) {
if (i == argc - 1) {
verror(ERR_WARN, "parse_args",
"No argument given for option '%s'\n",
aname);
ret = -1;
break;
}
parse_args_set(a, store, argv[++i]);
} else
parse_args_set(a, store, "1");
break;
}
}
if (!a->command) {
verror(ERR_WARN,"parse_args", "Unknown option '%s'\n", aname);
ret = -1;
}
}
return ret;
}
static void parse_args_obj_set(cli_args *a, char *store, Tcl_Obj *val) {
if (a->type == ARG_OBJ) {
*((Tcl_Obj **)&store[a->offset]) = val;
} else if (a->type == ARG_STR) {
*((char **)&store[a->offset]) = Tcl_GetStringFromObj(val, NULL);
} else if (a->type == ARG_IO) {
int handle;
GapIO *io;
Tcl_GetIntFromObj(NULL, val, &handle);
io = io_handle(&handle);
if (io)
*((GapIO **)&store[a->offset]) = io;
else
return; /* Doesn't set a->def */
} else if (a->type == ARG_INT) {
int i;
Tcl_GetIntFromObj(NULL, val, &i);
*((int *)&store[a->offset]) = i;
} else if (a->type == ARG_FLOAT) {
double d;
Tcl_GetDoubleFromObj(NULL, val, &d);
*((float *)&store[a->offset]) = d;
} else if (a->type == ARG_DOUBLE) {
double d;
Tcl_GetDoubleFromObj(NULL, val, &d);
*((double *)&store[a->offset]) = d;
} else {
fprintf(stderr, "Unknown argument type %d\n", a->type);
}
a->def = ""; /* mark as used */
}
int gap_parse_obj_args(cli_args *args, void *store, int objc,
Tcl_Obj * const objv[]) {
cli_args *a;
int ret;
/* Initialise defaults */
for (a = args; a->command; a++)
if (a->def)
parse_args_set(a, store, a->def);
else if (a->type == ARG_ARR)
memset((char *)&((char *)store)[a->offset], 0, a->value); /* YUK */
ret = gap_parse_obj_config(args, store, objc, objv);
/* Check all required options were set */
for (a = args; a->command; a++)
if (!a->def)
return -1;
return ret;
}
int gap_parse_obj_config(cli_args *args, void *store, int objc,
Tcl_Obj * const objv[]) {
int i, ret = 0;
cli_args *a;
Tcl_Obj *one_str;
one_str = Tcl_NewStringObj("1", -1);
for (i = 1; i < objc; i++) {
char *aname = Tcl_GetStringFromObj(objv[i], NULL);
for (a = args; a->command; a++) {
if (strcmp(a->command, aname) == 0) {
if (a->value) {
if (i == objc - 1) {
verror(ERR_WARN, "parse_args",
"No argument given for option '%s'\n",
aname);
ret = -1;
break;
}
parse_args_obj_set(a, store, objv[++i]);
} else
parse_args_obj_set(a, store, one_str);
break;
}
}
if (!a->command) {
verror(ERR_WARN,"parse_args", "Unknown option '%s'\n", aname);
ret = -1;
}
}
Tcl_DecrRefCount(one_str);
return ret;
}
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