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/* |
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* yaubil.c -- Yet Another Useless Built-In Language |
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* |
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* Copyrigth (C) 2009 Myhailo Danylenko <isbear@ukrpost.net> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or (at |
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* your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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*/ |
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#include <glib.h> |
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#include <gmodule.h> |
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#include <string.h> |
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#include "commands.h" |
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#include "compl.h" |
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#include "logprint.h" |
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#include "settings.h" |
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static gboolean ifresult = TRUE; |
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#define MSGPREFIX "yaubil: " |
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#define TYPE_UNDEF ( 0 ) |
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#define TYPE_STR ( 1 ) |
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#define TYPE_INT ( 2 ) |
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#define STATE_LVALUE ( 1 ) |
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#define STATE_OP ( 2 ) |
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#define STATE_RVALUE ( 3 ) |
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typedef struct { |
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int type; |
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int int_value; |
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char *str_value; |
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} value_t; |
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typedef struct { |
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char op; |
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gboolean (*handler) (value_t *l, value_t *r); |
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} op_t; |
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static int check_value_type (const char *value) |
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{ |
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if (value) { |
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const char *e; |
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gboolean integer = (*value == '-') ? FALSE : (g_ascii_isdigit (*value) ? TRUE : FALSE); |
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if (integer) { |
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for (e = value + 1; *e; ++e) { |
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if (g_ascii_isdigit (*e)) |
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integer = TRUE; |
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else { |
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integer = FALSE; |
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break; |
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} |
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} |
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} |
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if (integer) |
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return TYPE_INT; |
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else |
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return TYPE_STR; |
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} else |
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return TYPE_UNDEF; |
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} |
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static gboolean op_concat (value_t *l, value_t *r) |
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{ |
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GString *res = g_string_new (NULL);; |
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if (l->type == TYPE_INT) |
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g_string_append_printf (res, "%d", l->int_value); |
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else if (l->type == TYPE_STR) |
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g_string_append (res, l->str_value); |
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if (r->type == TYPE_INT) |
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g_string_append_printf (res, "%d", r->int_value); |
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else if (r->type == TYPE_STR) |
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g_string_append (res, r->str_value); |
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l->type = TYPE_STR; |
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g_free (l->str_value); |
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l->str_value = g_string_free (res, FALSE); |
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return TRUE; |
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} |
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static gboolean op_plus (value_t *l, value_t *r) |
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{ |
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if (l->type == TYPE_UNDEF) { |
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l->type = TYPE_INT; |
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l->int_value = 0; |
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} |
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if (r->type == TYPE_UNDEF) { |
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r->type = TYPE_INT; |
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r->int_value = 0; |
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} |
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if (l->type == TYPE_STR && check_value_type (l->str_value) == TYPE_INT) { |
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l->type = TYPE_INT; |
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l->int_value = atoi (l->str_value); |
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// not free value here |
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} |
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if (r->type == TYPE_STR && check_value_type (r->str_value) == TYPE_INT) { |
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r->type = TYPE_INT; |
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r->int_value = atoi (r->str_value); |
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// not free value here |
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} |
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if (l->type == TYPE_INT && r->type == TYPE_INT) { |
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// integer |
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l->int_value += r->int_value; |
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g_free (l->str_value); |
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l->str_value = NULL; |
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g_free (r->str_value); |
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r->str_value = NULL; |
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} else { |
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// convert both to strings |
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if (l->type == TYPE_INT) { |
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l->type = TYPE_STR; |
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if (!l->str_value) |
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l->str_value = g_strdup_printf ("%d", l->int_value); |
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} |
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if (r->type == TYPE_INT) { |
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r->type = TYPE_STR; |
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if (!r->str_value) |
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r->str_value = g_strdup_printf ("%d", r->int_value); |
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} |
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{ |
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char *tmp = l->str_value; |
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l->str_value = g_strdup_printf ("%s%s", tmp, r->str_value); |
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g_free (tmp); |
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} |
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} |
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return TRUE; |
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} |
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static gboolean op_minus (value_t *l, value_t *r) |
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{ |
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if (l->type == TYPE_UNDEF) { |
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l->type = TYPE_INT; |
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l->int_value = 0; |
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} |
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if (r->type == TYPE_UNDEF) { |
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r->type = TYPE_INT; |
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r->int_value = 0; |
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} |
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if (l->type == TYPE_STR && check_value_type (l->str_value) == TYPE_INT) { |
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l->type = TYPE_INT; |
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l->int_value = atoi (l->str_value); |
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g_free (l->str_value); |
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l->str_value = NULL; |
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} |
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if (r->type == TYPE_STR && check_value_type (r->str_value) == TYPE_INT) { |
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r->type = TYPE_INT; |
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r->int_value = atoi (r->str_value); |
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g_free (r->str_value); |
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r->str_value = NULL; |
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} |
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if (l->type == TYPE_INT && r->type == TYPE_INT) |
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l->int_value -= r->int_value; |
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else |
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return FALSE; |
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return TRUE; |
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} |
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static gboolean op_multiply (value_t *l, value_t *r) |
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{ |
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if (l->type == TYPE_UNDEF) { |
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l->type = TYPE_INT; |
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l->int_value = 0; |
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} |
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if (r->type == TYPE_UNDEF) { |
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r->type = TYPE_INT; |
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r->int_value = 0; |
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} |
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if (l->type == TYPE_STR && check_value_type (l->str_value) == TYPE_INT) { |
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l->type = TYPE_INT; |
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l->int_value = atoi (l->str_value); |
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// not free value here |
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} |
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if (r->type == TYPE_STR && check_value_type (r->str_value) == TYPE_INT) { |
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r->type = TYPE_INT; |
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r->int_value = atoi (r->str_value); |
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g_free (r->str_value); |
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r->str_value = NULL; |
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} |
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if (l->type == TYPE_INT && r->type == TYPE_INT) { |
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l->int_value *= r->int_value; |
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g_free (l->str_value); |
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l->str_value = NULL; |
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} else if (r->type == TYPE_INT) { |
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GString *res = g_string_new (NULL); |
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int i; |
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for (i = r->int_value; i; --i) |
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g_string_append (res, l->str_value); |
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g_free (l->str_value); |
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l->str_value = g_string_free (res, FALSE); |
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} else |
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return FALSE; |
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return TRUE; |
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} |
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223 |
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static gboolean op_divide (value_t *l, value_t *r) |
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{ |
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if (l->type == TYPE_UNDEF) { |
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l->type = TYPE_INT; |
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l->int_value = 0; |
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} |
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if (r->type == TYPE_UNDEF) { |
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r->type = TYPE_INT; |
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r->int_value = 0; |
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} |
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if (l->type == TYPE_STR && check_value_type (l->str_value) == TYPE_INT) { |
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l->type = TYPE_INT; |
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l->int_value = atoi (l->str_value); |
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g_free (l->str_value); |
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l->str_value = NULL; |
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} |
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if (r->type == TYPE_STR && check_value_type (r->str_value) == TYPE_INT) { |
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r->type = TYPE_INT; |
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r->int_value = atoi (r->str_value); |
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g_free (r->str_value); |
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r->str_value = NULL; |
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} |
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247 |
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if (l->type == TYPE_INT && r->type == TYPE_INT) { |
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if (r->int_value == 0) { |
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scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "/: Error: division by zero."); |
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return FALSE; |
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} |
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l->int_value /= r->int_value; |
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} else |
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return FALSE; |
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return TRUE; |
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} |
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static gboolean op_remain (value_t *l, value_t *r) |
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{ |
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if (l->type == TYPE_UNDEF) { |
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l->type = TYPE_INT; |
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l->int_value = 0; |
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} |
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if (r->type == TYPE_UNDEF) { |
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r->type = TYPE_INT; |
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r->int_value = 0; |
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} |
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270 |
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if (l->type == TYPE_STR && check_value_type (l->str_value) == TYPE_INT) { |
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l->type = TYPE_INT; |
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l->int_value = atoi (l->str_value); |
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g_free (l->str_value); |
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l->str_value = NULL; |
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} |
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if (r->type == TYPE_STR && check_value_type (r->str_value) == TYPE_INT) { |
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r->type = TYPE_INT; |
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r->int_value = atoi (r->str_value); |
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g_free (r->str_value); |
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r->str_value = NULL; |
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} |
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283 |
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if (l->type == TYPE_INT && r->type == TYPE_INT) { |
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if (r->int_value == 0) { |
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scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "%%: Error: division by zero."); |
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return FALSE; |
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288 |
} |
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l->int_value %= r->int_value; |
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} else |
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return FALSE; |
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292 |
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return TRUE; |
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} |
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295 |
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296 |
static gboolean op_equal (value_t *l, value_t *r) |
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297 |
{ |
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298 |
if (l->type == TYPE_UNDEF) { |
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l->type = TYPE_INT; |
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300 |
l->int_value = 0; |
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} |
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302 |
if (r->type == TYPE_UNDEF) { |
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r->type = TYPE_INT; |
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r->int_value = 0; |
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305 |
} |
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306 |
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307 |
if (l->type == TYPE_STR && check_value_type (l->str_value) == TYPE_INT) { |
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308 |
l->type = TYPE_INT; |
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309 |
l->int_value = atoi (l->str_value); |
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310 |
// not free value here |
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311 |
} |
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312 |
if (r->type == TYPE_STR && check_value_type (r->str_value) == TYPE_INT) { |
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313 |
r->type = TYPE_INT; |
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314 |
r->int_value = atoi (r->str_value); |
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315 |
// not free value here |
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316 |
} |
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317 |
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318 |
if (l->type == TYPE_INT && r->type == TYPE_INT) { |
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319 |
// integer |
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320 |
l->int_value = (l->int_value == r->int_value) ? 1 : 0; |
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321 |
g_free (l->str_value); |
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322 |
l->str_value = NULL; |
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323 |
g_free (r->str_value); |
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324 |
r->str_value = NULL; |
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325 |
} else { |
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326 |
// convert both to strings |
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327 |
if (l->type == TYPE_INT) { |
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328 |
l->type = TYPE_STR; |
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329 |
if (!l->str_value) |
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330 |
l->str_value = g_strdup_printf ("%d", l->int_value); |
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331 |
} |
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332 |
if (r->type == TYPE_INT) { |
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333 |
r->type = TYPE_STR; |
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334 |
if (!r->str_value) |
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335 |
r->str_value = g_strdup_printf ("%d", r->int_value); |
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336 |
} |
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337 |
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{ |
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char *tmp = l->str_value; |
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340 |
l->type = TYPE_INT; |
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341 |
l->int_value = (g_strcmp0 (l->str_value, r->str_value) == 0) ? 1 : 0; |
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342 |
g_free (tmp); |
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343 |
} |
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344 |
} |
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345 |
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346 |
return TRUE; |
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347 |
} |
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348 |
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349 |
static gboolean op_lt (value_t *l, value_t *r) |
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350 |
{ |
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351 |
if (l->type == TYPE_UNDEF) { |
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352 |
l->type = TYPE_INT; |
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353 |
l->int_value = 0; |
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354 |
} |
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355 |
if (r->type == TYPE_UNDEF) { |
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356 |
r->type = TYPE_INT; |
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357 |
r->int_value = 0; |
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|
358 |
} |
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|
359 |
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360 |
if (l->type == TYPE_STR && check_value_type (l->str_value) == TYPE_INT) { |
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361 |
l->type = TYPE_INT; |
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362 |
l->int_value = atoi (l->str_value); |
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363 |
// not free value here |
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364 |
} |
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|
365 |
if (r->type == TYPE_STR && check_value_type (r->str_value) == TYPE_INT) { |
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|
366 |
r->type = TYPE_INT; |
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367 |
r->int_value = atoi (r->str_value); |
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|
368 |
// not free value here |
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|
369 |
} |
|
|
370 |
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|
371 |
if (l->type == TYPE_INT && r->type == TYPE_INT) { |
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|
372 |
// integer |
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|
373 |
l->int_value = (l->int_value < r->int_value) ? 1 : 0; |
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|
374 |
g_free (l->str_value); |
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|
375 |
l->str_value = NULL; |
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|
376 |
g_free (r->str_value); |
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|
377 |
r->str_value = NULL; |
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|
378 |
} else { |
|
|
379 |
// convert both to strings |
|
|
380 |
if (l->type == TYPE_INT) { |
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|
381 |
l->type = TYPE_STR; |
|
|
382 |
if (!l->str_value) |
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|
383 |
l->str_value = g_strdup_printf ("%d", l->int_value); |
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|
384 |
} |
|
|
385 |
if (r->type == TYPE_INT) { |
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|
386 |
r->type = TYPE_STR; |
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|
387 |
if (!r->str_value) |
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|
388 |
r->str_value = g_strdup_printf ("%d", r->int_value); |
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|
389 |
} |
|
|
390 |
|
|
|
391 |
{ |
|
|
392 |
char *tmp = l->str_value; |
|
|
393 |
l->type = TYPE_INT; |
|
|
394 |
l->int_value = (g_strcmp0 (l->str_value, r->str_value) < 0) ? 1 : 0; |
|
|
395 |
g_free (tmp); |
|
|
396 |
} |
|
|
397 |
} |
|
|
398 |
|
|
|
399 |
return TRUE; |
|
|
400 |
} |
|
|
401 |
|
|
|
402 |
static gboolean op_gt (value_t *l, value_t *r) |
|
|
403 |
{ |
|
|
404 |
if (l->type == TYPE_UNDEF) { |
|
|
405 |
l->type = TYPE_INT; |
|
|
406 |
l->int_value = 0; |
|
|
407 |
} |
|
|
408 |
if (r->type == TYPE_UNDEF) { |
|
|
409 |
r->type = TYPE_INT; |
|
|
410 |
r->int_value = 0; |
|
|
411 |
} |
|
|
412 |
|
|
|
413 |
if (l->type == TYPE_STR && check_value_type (l->str_value) == TYPE_INT) { |
|
|
414 |
l->type = TYPE_INT; |
|
|
415 |
l->int_value = atoi (l->str_value); |
|
|
416 |
// not free value here |
|
|
417 |
} |
|
|
418 |
if (r->type == TYPE_STR && check_value_type (r->str_value) == TYPE_INT) { |
|
|
419 |
r->type = TYPE_INT; |
|
|
420 |
r->int_value = atoi (r->str_value); |
|
|
421 |
// not free value here |
|
|
422 |
} |
|
|
423 |
|
|
|
424 |
if (l->type == TYPE_INT && r->type == TYPE_INT) { |
|
|
425 |
// integer |
|
|
426 |
l->int_value = (l->int_value > r->int_value) ? 1 : 0; |
|
|
427 |
g_free (l->str_value); |
|
|
428 |
l->str_value = NULL; |
|
|
429 |
g_free (r->str_value); |
|
|
430 |
r->str_value = NULL; |
|
|
431 |
} else { |
|
|
432 |
// convert both to strings |
|
|
433 |
if (l->type == TYPE_INT) { |
|
|
434 |
l->type = TYPE_STR; |
|
|
435 |
if (!l->str_value) |
|
|
436 |
l->str_value = g_strdup_printf ("%d", l->int_value); |
|
|
437 |
} |
|
|
438 |
if (r->type == TYPE_INT) { |
|
|
439 |
r->type = TYPE_STR; |
|
|
440 |
if (!r->str_value) |
|
|
441 |
r->str_value = g_strdup_printf ("%d", r->int_value); |
|
|
442 |
} |
|
|
443 |
|
|
|
444 |
{ |
|
|
445 |
char *tmp = l->str_value; |
|
|
446 |
l->type = TYPE_INT; |
|
|
447 |
l->int_value = (g_strcmp0 (l->str_value, r->str_value) > 0) ? 1 : 0; |
|
|
448 |
g_free (tmp); |
|
|
449 |
} |
|
|
450 |
} |
|
|
451 |
|
|
|
452 |
return TRUE; |
|
|
453 |
} |
|
|
454 |
|
|
|
455 |
static op_t operators[] = { |
|
|
456 |
{ '.', op_concat }, |
|
|
457 |
{ '+', op_plus }, |
|
|
458 |
{ '-', op_minus }, |
|
|
459 |
{ '*', op_multiply }, |
|
|
460 |
{ '/', op_divide }, |
|
|
461 |
{ '%', op_remain }, |
|
|
462 |
{ '=', op_equal }, |
|
|
463 |
{ '<', op_lt }, |
|
|
464 |
{ '>', op_gt }, |
|
|
465 |
{ 0, NULL }, |
|
|
466 |
}; |
|
|
467 |
|
|
|
468 |
static void destroy_value (value_t *value) |
|
|
469 |
{ |
|
|
470 |
if (value->str_value) |
|
|
471 |
g_free (value->str_value); |
|
|
472 |
g_free (value); |
|
|
473 |
} |
|
|
474 |
|
|
|
475 |
static value_t *process_expression (const char *str, gsize len) |
|
|
476 |
{ |
|
|
477 |
const char *strend = str + len; |
|
|
478 |
const char *p; |
|
|
479 |
op_t *op = NULL; |
|
|
480 |
int state = STATE_LVALUE; |
|
|
481 |
value_t val = { |
|
|
482 |
.type = TYPE_UNDEF, |
|
|
483 |
.int_value = 0, |
|
|
484 |
.str_value = NULL, |
|
|
485 |
}; |
|
|
486 |
|
|
|
487 |
for (p = str; *p && p < strend; ++p) { |
|
|
488 |
switch (state) { |
|
|
489 |
case STATE_LVALUE: |
|
|
490 |
case STATE_RVALUE: |
|
|
491 |
|
|
|
492 |
if (*p == ' ') |
|
|
493 |
break; |
|
|
494 |
|
|
|
495 |
{ |
|
|
496 |
value_t rval = { |
|
|
497 |
.type = TYPE_UNDEF, |
|
|
498 |
.int_value = 0, |
|
|
499 |
.str_value = NULL, |
|
|
500 |
}; |
|
|
501 |
|
|
|
502 |
if (g_ascii_isdigit (*p) || *p == '-') { // integer // XXX: no unary operators for now... |
|
|
503 |
|
|
|
504 |
const char *e; |
|
|
505 |
|
|
|
506 |
rval.type = TYPE_INT; |
|
|
507 |
|
|
|
508 |
for (e = p + 1; g_ascii_isdigit (*e) && e < strend; ++e); // TODO: does atoi handle 0x etc? then also allow this? |
|
|
509 |
|
|
|
510 |
{ |
|
|
511 |
char *v = g_strndup (p, e - p); |
|
|
512 |
rval.int_value = atoi (v); |
|
|
513 |
g_free (v); |
|
|
514 |
} |
|
|
515 |
|
|
|
516 |
p = e - 1; |
|
|
517 |
|
|
|
518 |
} else if (*p == '"') { // string |
|
|
519 |
|
|
|
520 |
const char *e; |
|
|
521 |
|
|
|
522 |
rval.type = TYPE_STR; |
|
|
523 |
|
|
|
524 |
{ |
|
|
525 |
gboolean finished = FALSE; |
|
|
526 |
gboolean escape = FALSE; |
|
|
527 |
GString *v = g_string_new (NULL); |
|
|
528 |
|
|
|
529 |
for (e = p + 1; *e && e < strend; ++e) { |
|
|
530 |
switch (*e) { |
|
|
531 |
case '\\': |
|
|
532 |
if (!escape) |
|
|
533 |
escape = TRUE; |
|
|
534 |
else |
|
|
535 |
escape = FALSE; |
|
|
536 |
break; |
|
|
537 |
case '"': |
|
|
538 |
if (!escape) { |
|
|
539 |
finished = TRUE; |
|
|
540 |
break; |
|
|
541 |
} else |
|
|
542 |
escape = FALSE; |
|
|
543 |
break; |
|
|
544 |
default: |
|
|
545 |
escape = FALSE; |
|
|
546 |
break; |
|
|
547 |
} |
|
|
548 |
|
|
|
549 |
if (finished) |
|
|
550 |
break; |
|
|
551 |
|
|
|
552 |
if (!escape) |
|
|
553 |
g_string_append_c (v, *e); |
|
|
554 |
}; |
|
|
555 |
|
|
|
556 |
if (!finished) { |
|
|
557 |
scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "Error: Unmatched quote."); |
|
|
558 |
g_string_free (v, TRUE); |
|
|
559 |
g_free (val.str_value); |
|
|
560 |
return NULL; |
|
|
561 |
} |
|
|
562 |
|
|
|
563 |
rval.str_value = g_string_free (v, FALSE); |
|
|
564 |
} |
|
|
565 |
|
|
|
566 |
p = e; |
|
|
567 |
|
|
|
568 |
} else if (g_ascii_isalpha (*p)) { // variable (MUST start from alpha) |
|
|
569 |
|
|
|
570 |
const char *e; |
|
|
571 |
|
|
|
572 |
for (e = p + 1; (g_ascii_isalnum (*e) || *e == '-' || *e == '_') && e < strend; ++e); |
|
|
573 |
|
|
|
574 |
char *name = g_strndup (p, e - p); |
|
|
575 |
const char *value = settings_opt_get (name); |
|
|
576 |
g_free (name); |
|
|
577 |
|
|
|
578 |
rval.type = check_value_type (value); |
|
|
579 |
if (rval.type == TYPE_INT) |
|
|
580 |
rval.int_value = atoi (value); |
|
|
581 |
else if (rval.type == TYPE_STR) |
|
|
582 |
rval.str_value = g_strdup (value); |
|
|
583 |
|
|
|
584 |
p = e - 1; |
|
|
585 |
|
|
|
586 |
} else if (*p == '(') { |
|
|
587 |
|
|
|
588 |
const char *e; |
|
|
589 |
|
|
|
590 |
{ |
|
|
591 |
int l = 0; |
|
|
592 |
gboolean finished = FALSE; |
|
|
593 |
|
|
|
594 |
// XXX maybe we should just pass end of line and let it return real length... |
|
|
595 |
for (e = p + 1; e < strend; ++e) { |
|
|
596 |
if (*e == '(') |
|
|
597 |
++l; |
|
|
598 |
else if (*e == ')') { |
|
|
599 |
--l; |
|
|
600 |
if (l < 0) { |
|
|
601 |
finished = TRUE; |
|
|
602 |
break; |
|
|
603 |
} |
|
|
604 |
} |
|
|
605 |
} |
|
|
606 |
|
|
|
607 |
if (!finished) { |
|
|
608 |
scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "Error: Unmatched parenthesis."); |
|
|
609 |
g_free (val.str_value); |
|
|
610 |
return NULL; |
|
|
611 |
} |
|
|
612 |
} |
|
|
613 |
|
|
|
614 |
{ |
|
|
615 |
value_t *n = process_expression (p + 1, e - p - 1); |
|
|
616 |
|
|
|
617 |
if (!n) { |
|
|
618 |
scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "Error: Error in subexpression."); |
|
|
619 |
g_free (val.str_value); |
|
|
620 |
return NULL; |
|
|
621 |
} |
|
|
622 |
|
|
|
623 |
rval.type = n->type; |
|
|
624 |
rval.int_value = n->int_value; |
|
|
625 |
rval.str_value = g_strdup (n->str_value); |
|
|
626 |
destroy_value (n); |
|
|
627 |
} |
|
|
628 |
|
|
|
629 |
p = e; |
|
|
630 |
|
|
|
631 |
} else { |
|
|
632 |
scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "Error: unrecognized symbols."); |
|
|
633 |
g_free (val.str_value); |
|
|
634 |
return NULL; |
|
|
635 |
} |
|
|
636 |
|
|
|
637 |
if (state == STATE_RVALUE) { |
|
|
638 |
if (op->handler) { |
|
|
639 |
if (!op->handler (&val, &rval)) { |
|
|
640 |
scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "Error: operand argument types mismatch."); |
|
|
641 |
g_free (val.str_value); |
|
|
642 |
g_free (rval.str_value); |
|
|
643 |
return NULL; |
|
|
644 |
} |
|
|
645 |
} |
|
|
646 |
g_free (rval.str_value); |
|
|
647 |
} else { |
|
|
648 |
val.type = rval.type; |
|
|
649 |
val.int_value = rval.int_value; |
|
|
650 |
val.str_value = rval.str_value; |
|
|
651 |
} |
|
|
652 |
|
|
|
653 |
state = STATE_OP; |
|
|
654 |
} |
|
|
655 |
|
|
|
656 |
break; |
|
|
657 |
|
|
|
658 |
case STATE_OP: |
|
|
659 |
|
|
|
660 |
if (*p == ' ') |
|
|
661 |
break; |
|
|
662 |
|
|
|
663 |
{ |
|
|
664 |
op_t *operator; |
|
|
665 |
gboolean found = FALSE; |
|
|
666 |
|
|
|
667 |
for (operator = operators; operator->op; ++operator) { |
|
|
668 |
if (operator->op == *p) { |
|
|
669 |
op = operator; |
|
|
670 |
found = TRUE; |
|
|
671 |
break; |
|
|
672 |
} |
|
|
673 |
} |
|
|
674 |
|
|
|
675 |
if (!found) { |
|
|
676 |
scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "Error: unknown operator."); |
|
|
677 |
g_free (val.str_value); |
|
|
678 |
} |
|
|
679 |
} |
|
|
680 |
|
|
|
681 |
state = STATE_RVALUE; |
|
|
682 |
|
|
|
683 |
break; |
|
|
684 |
default: |
|
|
685 |
break; |
|
|
686 |
} |
|
|
687 |
} |
|
|
688 |
|
|
|
689 |
{ // return value |
|
|
690 |
value_t *rval = g_new (value_t, 1); |
|
|
691 |
|
|
|
692 |
rval->type = val.type; |
|
|
693 |
rval->int_value = val.int_value; |
|
|
694 |
rval->str_value = val.str_value; |
|
|
695 |
|
|
|
696 |
return rval; |
|
|
697 |
} |
|
|
698 |
} |
|
|
699 |
|
|
|
700 |
static void do_eval (char *arg) |
|
|
701 |
{ |
|
|
702 |
value_t *val = process_expression (arg, strlen (arg)); |
|
|
703 |
|
|
|
704 |
if (!val) { |
|
|
705 |
scr_LogPrint (LPRINT_NORMAL, "eval: Evaluation error."); |
|
|
706 |
return; |
|
|
707 |
} |
|
|
708 |
|
|
|
709 |
if (val->type == TYPE_STR) |
|
|
710 |
process_command (val->str_value, TRUE); |
|
|
711 |
else |
|
|
712 |
scr_LogPrint (LPRINT_NORMAL, "eval: Expression does not result in string."); |
|
|
713 |
|
|
|
714 |
destroy_value (val); |
|
|
715 |
} |
|
|
716 |
|
|
|
717 |
static void do_let (char *arg) |
|
|
718 |
{ |
|
|
719 |
char *varname; |
|
|
720 |
value_t *value; |
|
|
721 |
int namelen; |
|
|
722 |
char *val = strchr (arg, '='); |
|
|
723 |
|
|
|
724 |
if (!val) { |
|
|
725 |
scr_LogPrint (LPRINT_NORMAL, "let: Syntax error: no equal sign in line."); |
|
|
726 |
return; |
|
|
727 |
} |
|
|
728 |
|
|
|
729 |
{ |
|
|
730 |
char *p = val; |
|
|
731 |
|
|
|
732 |
for (p = val - 1; p >= arg && *p == ' '; --p); |
|
|
733 |
if (p < arg) { |
|
|
734 |
scr_LogPrint (LPRINT_NORMAL, "let: Syntax error: no destination variable name specified."); |
|
|
735 |
return; |
|
|
736 |
} |
|
|
737 |
|
|
|
738 |
namelen = p + 1 - arg; |
|
|
739 |
} |
|
|
740 |
|
|
|
741 |
// evaluate expression |
|
|
742 |
value = process_expression (val + 1, strlen (val + 1)); |
|
|
743 |
|
|
|
744 |
if (!value) { |
|
|
745 |
scr_LogPrint (LPRINT_NORMAL, "let: Evaluation error."); |
|
|
746 |
return; |
|
|
747 |
} |
|
|
748 |
|
|
|
749 |
if (value->type == TYPE_INT) { |
|
|
750 |
value->type = TYPE_STR; |
|
|
751 |
value->str_value = g_strdup_printf ("%d", value->int_value); |
|
|
752 |
} |
|
|
753 |
|
|
|
754 |
{ // assign value |
|
|
755 |
char *varname = g_strndup (arg, namelen); |
|
|
756 |
|
|
|
757 |
if (value->str_value) |
|
|
758 |
settings_set (SETTINGS_TYPE_OPTION, varname, value->str_value); |
|
|
759 |
else |
|
|
760 |
settings_del (SETTINGS_TYPE_OPTION, varname); |
|
|
761 |
|
|
|
762 |
g_free (varname); |
|
|
763 |
} |
|
|
764 |
|
|
|
765 |
destroy_value (value); |
|
|
766 |
} |
|
|
767 |
|
|
|
768 |
static void do_if (char *arg) |
|
|
769 |
{ |
|
|
770 |
value_t *val = process_expression (arg, strlen (arg)); |
|
|
771 |
|
|
|
772 |
if (!val) { |
|
|
773 |
scr_LogPrint (LPRINT_NORMAL, "if: Evaluation error."); |
|
|
774 |
return; |
|
|
775 |
} |
|
|
776 |
|
|
|
777 |
if (val->type == TYPE_UNDEF) { |
|
|
778 |
val->type = TYPE_INT; |
|
|
779 |
val->int_value = 0; |
|
|
780 |
} |
|
|
781 |
if (val->type == TYPE_STR && check_value_type (val->str_value) == TYPE_INT) { |
|
|
782 |
val->type = TYPE_INT; |
|
|
783 |
val->int_value = atoi (val->str_value); |
|
|
784 |
g_free (val->str_value); |
|
|
785 |
val->str_value = NULL; |
|
|
786 |
} |
|
|
787 |
|
|
|
788 |
if (val->type == TYPE_INT) |
|
|
789 |
ifresult = val->int_value ? TRUE : FALSE; |
|
|
790 |
else if (val->str_value) |
|
|
791 |
ifresult = TRUE; |
|
|
792 |
else |
|
|
793 |
ifresult = FALSE; |
|
|
794 |
|
|
|
795 |
destroy_value (val); |
|
|
796 |
} |
|
|
797 |
|
|
|
798 |
static void do_then (char *arg) |
|
|
799 |
{ |
|
|
800 |
if (ifresult) |
|
|
801 |
process_command (arg, TRUE); |
|
|
802 |
} |
|
|
803 |
|
|
|
804 |
static void do_else (char *arg) |
|
|
805 |
{ |
|
|
806 |
if (!ifresult) |
|
|
807 |
process_command (arg, TRUE); |
|
|
808 |
} |
|
|
809 |
|
|
|
810 |
static void do_multi (char *arg) |
|
|
811 |
{ |
|
|
812 |
char *end; |
|
|
813 |
char *start = arg; |
|
|
814 |
|
|
|
815 |
for (end = strchr (start, ';'); end; end = strchr (start, ';')) { |
|
|
816 |
|
|
|
817 |
// execute command |
|
|
818 |
char *command = g_strndup (start, end - start); |
|
|
819 |
process_command (command, TRUE); |
|
|
820 |
g_free (command); |
|
|
821 |
|
|
|
822 |
// skip leading spaces |
|
|
823 |
for (start = end + 1; *start == ' '; ++start); |
|
|
824 |
} |
|
|
825 |
|
|
|
826 |
if (*start) |
|
|
827 |
process_command (start, TRUE); |
|
|
828 |
} |
|
|
829 |
|
|
|
830 |
const gchar *g_module_check_init (GModule *module) |
|
|
831 |
{ |
|
|
832 |
cmd_add ("multi", "", COMPL_CMD, COMPL_CMD, do_multi, NULL); |
|
|
833 |
cmd_add ("if", "", 0, 0, do_if, NULL); |
|
|
834 |
cmd_add ("then", "", COMPL_CMD, COMPL_CMD, do_then, NULL); |
|
|
835 |
cmd_add ("else", "", COMPL_CMD, COMPL_CMD, do_else, NULL); |
|
|
836 |
cmd_add ("eval", "", 0, 0, do_eval, NULL); |
|
|
837 |
cmd_add ("let", "", 0, 0, do_let, NULL); |
|
|
838 |
|
|
|
839 |
return NULL; |
|
|
840 |
} |
|
|
841 |
|
|
|
842 |
void g_module_unload (GModule *module) |
|
|
843 |
{ |
|
|
844 |
cmd_del ("multi"); |
|
|
845 |
cmd_del ("if"); |
|
|
846 |
cmd_del ("then"); |
|
|
847 |
cmd_del ("else"); |
|
|
848 |
cmd_del ("eval"); |
|
|
849 |
cmd_del ("let"); |
|
|
850 |
} |
|
|
851 |
|
|
|
852 |
/* The End */ |