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113 lines
3.0 KiB
C++
113 lines
3.0 KiB
C++
/***************************************************************************
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sys_strings.c Copyright (C) 2002 Christoph Reichenbach
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This program may be modified and copied freely according to the terms of
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the GNU general public license (GPL), as long as the above copyright
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notice and the licensing information contained herein are preserved.
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Please refer to www.gnu.org for licensing details.
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This work is provided AS IS, without warranty of any kind, expressed or
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implied, including but not limited to the warranties of merchantibility,
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noninfringement, and fitness for a specific purpose. The author will not
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be held liable for any damage caused by this work or derivatives of it.
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By using this source code, you agree to the licensing terms as stated
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above.
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Please contact the maintainer for bug reports or inquiries.
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Current Maintainer:
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Christoph Reichenbach (CR) <jameson@linuxgames.com>
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***************************************************************************/
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#include "sci/include/sys_strings.h"
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#include "sci/include/sci_memory.h"
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void
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sys_string_acquire(sys_strings_t *strings, int index, const char *name, int max_len) {
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sys_string_t *str = strings->strings + index;
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if (index < 0 || index >= SYS_STRINGS_MAX) {
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fprintf(stderr, "[SYSSTR] Error: Attempt to acquire string #%d\n",
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index);
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BREAKPOINT();
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}
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if (str->name
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&& (strcmp(name, str->name)
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|| (str->max_size != max_len))) {
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fprintf(stderr, "[SYSSTR] Error: Attempt to re-acquire existing string #%d;"
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"was '%s', tried to claim as '%s'\n",
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index, str->name, name);
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BREAKPOINT();
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}
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str->name = strdup(name);
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str->max_size = max_len;
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str->value = (char*)sci_malloc(max_len + 1);
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str->value[0] = 0; /* Set to empty string */
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}
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int
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sys_string_set(sys_strings_t *strings, int index, const char *value) {
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sys_string_t *str = strings->strings + index;
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if (index < 0 || index >= SYS_STRINGS_MAX || !str->name) {
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fprintf(stderr, "[SYSSTR] Error: Attempt to write to invalid/unused string #%d\n",
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index);
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BREAKPOINT();
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return 1;
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}
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strncpy(str->value, value, str->max_size);
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str->value[str->max_size] = 0; /* Make sure to terminate */
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return 0;
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}
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void
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sys_string_free(sys_strings_t *strings, int index) {
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sys_string_t *str = strings->strings + index;
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free(str->name);
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str->name = NULL;
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free(str->value);
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str->value = NULL;
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str->max_size = 0;
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}
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void
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sys_string_free_all(sys_strings_t *strings) {
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int i;
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for (i = 0;i < SYS_STRINGS_MAX;i++) {
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if (strings->strings[i].name)
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sys_string_free(strings, i);
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}
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}
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void
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sys_strings_restore(sys_strings_t *new_strings, sys_strings_t *old_strings) {
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int i;
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/* First, pad memory */
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for (i = 0; i < SYS_STRINGS_MAX; i++) {
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sys_string_t *s = new_strings->strings + i;
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char *data = s->value;
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if (data) {
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s->value = (char *)sci_malloc(s->max_size + 1);
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strcpy(s->value, data);
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sci_free(data);
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}
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}
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sys_string_set(new_strings, SYS_STRING_SAVEDIR, old_strings->strings[SYS_STRING_SAVEDIR].value);
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}
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