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/*
* LiberTI - TI-like calculator designed for LibreCalc
* Copyright (C) 2016-2017 Delwink, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, version 3 only.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdarg.h>
#include <string.h>
#include "tibchar.h"
#include "util.h"
int
load_expr(struct tib_expr *dest, const char *src)
{
unsigned int len = strlen(src);
for (unsigned int i = 0; i < len; ++i)
{
int rc = tib_expr_push(dest, src[i]);
if (rc)
return rc;
}
return 0;
}
int
load_expr_num(struct tib_expr *dest, const char *src)
{
int rc = load_expr(dest, src);
if (rc)
return rc;
int e = tib_expr_indexof_r(dest, 'e');
if (e >= 0)
{
tib_expr_delete(dest, e);
if ('+' == dest->data[e])
dest->data[e] = TIB_CHAR_EPOW10;
else
rc = tib_expr_insert(dest, e, TIB_CHAR_EPOW10);
}
return rc;
}
const char *
display_special_char(int c)
{
static const int SKIPS[] = {
TIB_CHAR_DEGREE,
TIB_CHAR_EPOW10,
TIB_CHAR_GREATEREQUAL,
TIB_CHAR_L1,
TIB_CHAR_L2,
TIB_CHAR_L3,
TIB_CHAR_L4,
TIB_CHAR_L5,
TIB_CHAR_L6,
TIB_CHAR_L7,
TIB_CHAR_L8,
TIB_CHAR_L9,
TIB_CHAR_LESSEQUAL,
TIB_CHAR_PI,
TIB_CHAR_SMALL1,
TIB_CHAR_SMALL2,
TIB_CHAR_SMALL3,
TIB_CHAR_SMALL4,
TIB_CHAR_SMALL5,
TIB_CHAR_SMALL6,
TIB_CHAR_SMALL7,
TIB_CHAR_SMALL8,
TIB_CHAR_SMALL9,
TIB_CHAR_SMALL_MINUS,
TIB_CHAR_STO,
TIB_CHAR_THETA
};
for (unsigned int i = 0; i < (sizeof SKIPS / sizeof(int)); ++i)
if (SKIPS[i] == c)
return NULL;
return tib_special_char_text(c);
}
char *
get_expr_display_str(const struct tib_expr *expr)
{
return tib_expr_tostr_f(expr, display_special_char);
}
int
max(int x, int y)
{
return (x > y) ? x : y;
}
int
min(int x, int y)
{
return (x < y) ? x : y;
}
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