#ifndef _COM_ARGS_H_
#define _COM_ARGS_H_
#ifdef __cplusplus
extern "C"
{
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define ARGS_TYPE_MANDATORY (1<<0) /* mandatory or not */
#define COM_ARGS_VAL_TYPE_NONE (0<<1) /* no value */
#define ARGS_TYPE_INTEGER (10<<1) /* integer type value */
#define ARGS_TYPE_STRING (20<<1) /* string type value */
#define COM_ARGS_GET_CMD_OPT_VAL_TYPE(x) ((x) & ~ARGS_TYPE_MANDATORY)
#define COM_ARGS_NO_KEY (127)
typedef struct _COM_ARGS_OPTION
{
char key; /* option keyword. ex) -f */
char key_long[32]; /* option long keyword, ex) --file */
int val_type; /* value type */
int * flag; /* flag to setting or not */
void * val; /* actual value */
char desc[512]; /* description of option */
} COM_ARGS_OPTION;
static int com_args_search_long_arg(COM_ARGS_OPTION * opts, const char * argv)
{
int oidx = 0;
COM_ARGS_OPTION * o;
o = opts;
while(o->key != 0)
{
if(!strcmp(argv, o->key_long))
{
return oidx;
}
oidx++;
o++;
}
return -1;
}
static int com_args_search_short_arg(COM_ARGS_OPTION * ops, const char argv)
{
int oidx = 0;
COM_ARGS_OPTION * o;
o = ops;
while(o->key != 0)
{
if(o->key != COM_ARGS_NO_KEY && o->key == argv)
{
return oidx;
}
oidx++;
o++;
}
return -1;
}
static int com_args_read_value(COM_ARGS_OPTION * ops, const char * argv)
{
if(argv == NULL) return -1;
if(argv[0] == '-' && (argv[1] < '0' || argv[1] > '9')) return -1;
switch(COM_ARGS_GET_CMD_OPT_VAL_TYPE(ops->val_type))
{
case ARGS_TYPE_INTEGER:
*((int*)ops->val) = atoi(argv);
break;
case ARGS_TYPE_STRING:
strcpy((char*)ops->val, argv);
break;
default:
return -1;
}
return 0;
}
static int com_args_get_help(COM_ARGS_OPTION * ops, int idx, char * help)
{
int optional = 0;
char vtype[32];
COM_ARGS_OPTION * o = ops + idx;
switch(COM_ARGS_GET_CMD_OPT_VAL_TYPE(o->val_type))
{
case ARGS_TYPE_INTEGER:
strcpy(vtype, "INTEGER");
break;
case ARGS_TYPE_STRING:
strcpy(vtype, "STRING");
break;
case COM_ARGS_VAL_TYPE_NONE:
default:
strcpy(vtype, "FLAG");
break;
}
optional = !(o->val_type & ARGS_TYPE_MANDATORY);
if(o->key != COM_ARGS_NO_KEY)
{
sprintf(help, " -%c, --%s [%s]%s\n : %s", o->key, o->key_long,
vtype, (optional) ? " (optional)" : "", o->desc);
}
else
{
sprintf(help, " --%s [%s]%s\n : %s", o->key_long,
vtype, (optional) ? " (optional)" : "", o->desc);
}
return 0;
}
static int com_args_get_arg(COM_ARGS_OPTION * ops, int idx, char * result)
{
char vtype[32];
char value[512];
COM_ARGS_OPTION * o = ops + idx;
switch(COM_ARGS_GET_CMD_OPT_VAL_TYPE(o->val_type))
{
case ARGS_TYPE_INTEGER:
strcpy(vtype, "INTEGER");
sprintf(value, "%d", *((int*)o->val));
break;
case ARGS_TYPE_STRING:
strcpy(vtype, "STRING");
sprintf(value, "%s", (char*)o->val);
break;
case COM_ARGS_VAL_TYPE_NONE:
default:
strcpy(vtype, "FLAG");
sprintf(value, "%d", *((int*)o->val));
break;
}
if(o->flag != NULL && (*o->flag))
{
strcat(value, " (SET)");
}
else
{
strcat(value, " (DEFAULT)");
}
sprintf(result, " -%c(--%s) = %s\n : %s", o->key, o->key_long,
value, o->desc);
return 0;
}
static int com_parse_cfg(FILE * fp, COM_ARGS_OPTION * ops)
{
char * parser;
char line[4096] = "", tag[50] = "", val[4096] = "";
int oidx;
while(fgets(line, sizeof(line), fp))
{
parser = strchr(line, '#');
if (parser != NULL)
{
*parser = '\0';
}
parser = strtok(line, ": \t"); // find the parameter name
if (parser == NULL)
{
continue;
}
strcpy(tag, parser);
parser = strtok(NULL, ":"); // skip the colon
parser = strtok(NULL, " \t\n");
if(parser == NULL) continue;
strcpy(val, parser);
oidx = com_args_search_long_arg(ops, tag);
if (oidx < 0)
{
printf("\nError in configuration file: \"%s\" is not a valid command!\n", tag);
return -1;
}
if(COM_ARGS_GET_CMD_OPT_VAL_TYPE(ops[oidx].val_type) !=
COM_ARGS_VAL_TYPE_NONE)
{
if(com_args_read_value(ops + oidx, val)) continue;
}
else
{
*((int*)ops[oidx].val) = 1;
}
*ops[oidx].flag = 1;
}
return 0;
}
static int com_parse_cmd(int argc, const char * argv[], COM_ARGS_OPTION * ops, int * idx)
{
int aidx; /* arg index */
int oidx; /* option index */
aidx = *idx + 1;
if(aidx >= argc || argv[aidx] == NULL) goto NO_MORE;
if(argv[aidx][0] != '-') goto ERR;
if(argv[aidx][1] == '-')
{
/* long option */
oidx = com_args_search_long_arg(ops, argv[aidx] + 2);
if (oidx < 0)
{
printf("\nError in command: \"%s\" is not a valid command!\n", argv[aidx]);
goto ERR;
}
}
else if(strlen(argv[aidx]) == 2)
{
/* short option */
oidx = com_args_search_short_arg(ops, argv[aidx][1]);
if (oidx < 0)
{
printf("\nError in command: \"%s\" is not a valid command!\n", argv[aidx]);
goto ERR;
}
}
else
{
printf("\nError in command: \"%s\" is not a valid command!\n", argv[aidx]);
goto ERR;
}
if(COM_ARGS_GET_CMD_OPT_VAL_TYPE(ops[oidx].val_type) != COM_ARGS_VAL_TYPE_NONE)
{
if (aidx + 1 >= argc)
{
printf("\nError in command: \"%s\" setting is incorrect!\n", argv[aidx]);
goto ERR;
}
if (com_args_read_value(ops + oidx, argv[aidx + 1]))
{
printf("\nError in command: \"%s\" setting is incorrect!\n", argv[aidx]);
goto ERR;
}
*idx = *idx + 1;
}
else
{
*((int*)ops[oidx].val) = 1;
}
*ops[oidx].flag = 1;
*idx = *idx + 1;
return ops[oidx].key;
NO_MORE:
return 0;
ERR:
return -1;
}
static int com_args_parse_all(int argc, const char * argv[], COM_ARGS_OPTION * ops)
{
int i, ret = 0, idx = 0;
COM_ARGS_OPTION *o;
const char *fname_cfg = NULL;
FILE *fp;
/* config file parsing */
for(i = 1; i < argc; i++)
{
if(!strcmp(argv[i], "--config"))
{
if(i + 1 < argc)
{
fname_cfg = argv[i + 1];
break;
}
}
}
if(fname_cfg)
{
fp = fopen(fname_cfg, "r");
if (fp == NULL)
{
printf("\nError: Cannot open %s\n", fname_cfg);
return -1;
}
if(com_parse_cfg(fp, ops))
{
fclose(fp);
return -1; /* config file error */
}
fclose(fp);
}
/* command line parsing */
while(1)
{
ret = com_parse_cmd(argc, argv, ops, &idx);
if(ret <= 0) break;
}
/* check mandatory argument */
o = ops;
while(o->key != 0)
{
if(o->val_type & ARGS_TYPE_MANDATORY)
{
if(*o->flag == 0)
{
/* not filled all mandatory argument */
return o->key;
}
}
o++;
}
return ret;
}
static int com_args_parse_int_x_int(char * str, int * num0, int * num1)
{
char str0_t[64];
int i, cnt0, cnt1;
char * str0, *str1 = NULL;
str0 = str;
cnt1 = (int)strlen(str);
/* find 'x' */
for(i = 0; i < (int)strlen(str); i++)
{
if(str[i] == 'x' || str[i] == 'X')
{
str1 = str + i + 1;
cnt0 = i;
cnt1 = cnt1 - cnt0 - 1;
break;
}
}
/* check malformed data */
if(str1 == NULL || cnt0 == 0 || cnt1 == 0) return -1;
for(i = 0; i < cnt0; i++)
{
if(str0[i] < 0x30 || str0[i] > 0x39) return -1; /* not a number */
}
for(i = 0; i < cnt1; i++)
{
if(str1[i] < 0x30 || str1[i] > 0x39) return -1; /* not a number */
}
strncpy(str0_t, str0, cnt0);
str0_t[cnt0] = '\0';
*num0 = atoi(str0_t);
*num1 = atoi(str1);
return 0;
}
#ifdef __cplusplus
}
#endif
#endif /*_COM_ARGS_H_ */
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