static void
show_tsearch(const void *nodep, const VISIT which, const int depth)
{
const CACHE *p = *(CACHE * const *) nodep;
(void) depth;
if (which == postorder || which == leaf) {
DLG_TRACE(("# cache %p %p:%s\n", p, p->string, p->string));
}
}
static int
read_data(char *buffer, FILE *fp)
{
int result;
if (feof(fp)) {
result = 0;
} else if (fgets(buffer, MY_LEN, fp) != 0) {
DLG_TRACE(("read_data:%s", buffer));
dlg_trim_string(buffer);
result = 1;
} else {
result = -1;
}
return result;
}
static void
trace_cache(const char *fn, int ln)
{
DLG_TRACE(("# trace_cache %s@%d\n", fn, ln));
twalk(sorted_cache, show_tsearch);
}
/*
* Parse the configuration file and set up variables
*/
int
dlg_parse_rc(void)
{
int i;
int l = 1;
PARSE_LINE parse;
char str[MAX_LEN + 1];
char *var;
char *value;
char *tempptr;
int result = 0;
FILE *rc_file = 0;
char *params;
/*
* At startup, dialog determines the settings to use as follows:
*
* a) if the environment variable $DIALOGRC is set, its value determines
* the name of the configuration file.
*
* b) if the file in (a) can't be found, use the file $HOME/.dialogrc
* as the configuration file.
*
* c) if the file in (b) can't be found, try using the GLOBALRC file.
* Usually this will be /etc/dialogrc.
*
* d) if the file in (c) cannot be found, use the compiled-in defaults.
*/
/* try step (a) */
if ((tempptr = getenv("DIALOGRC")) != NULL)
rc_file = fopen(tempptr, "rt");
if (rc_file == NULL) { /* step (a) failed? */
/* try step (b) */
if ((tempptr = getenv("HOME")) != NULL
&& strlen(tempptr) < MAX_LEN - (sizeof(DIALOGRC) + 3)) {
if (tempptr[0] == '\0' || lastch(tempptr) == '/')
sprintf(str, "%s%s", tempptr, DIALOGRC);
else
sprintf(str, "%s/%s", tempptr, DIALOGRC);
rc_file = fopen(tempptr = str, "rt");
}
}
if (rc_file == NULL) { /* step (b) failed? */
/* try step (c) */
strcpy(str, GLOBALRC);
if ((rc_file = fopen(tempptr = str, "rt")) == NULL)
return 0; /* step (c) failed, use default values */
}
DLG_TRACE(("opened rc file \"%s\"\n", tempptr));
/* Scan each line and set variables */
while ((result == 0) && (fgets(str, MAX_LEN, rc_file) != NULL)) {
DLG_TRACE(("rc:%s", str));
if (*str == '\0' || lastch(str) != '\n') {
/* ignore rest of file if line too long */
fprintf(stderr, "\nParse error: line %d of configuration"
" file too long.\n", l);
result = -1; /* parse aborted */
break;
}
lastch(str) = '\0';
if (begins_with(str, "bindkey", ¶ms)) {
if (!dlg_parse_bindkey(params)) {
fprintf(stderr, "\nParse error: line %d of configuration\n", l);
result = -1;
}
continue;
}
parse = parse_line(str, &var, &value); /* parse current line */
switch (parse) {
case LINE_EMPTY: /* ignore blank lines and comments */
break;
case LINE_EQUALS:
/* search table for matching config variable name */
if ((i = find_vars(var)) >= 0) {
switch (vars[i].type) {
case VAL_INT:
*((int *) vars[i].var) = atoi(value);
break;
case VAL_STR:
if (!isquote(value[0]) || !isquote(lastch(value))
|| strlen(value) < 2) {
fprintf(stderr, "\nParse error: string value "
"expected at line %d of configuration "
"file.\n", l);
result = -1; /* parse aborted */
} else {
/* remove the (") quotes */
value++;
lastch(value) = '\0';
strcpy((char *) vars[i].var, value);
}
break;
case VAL_BOOL:
if (!dlg_strcmp(value, "ON"))
*((bool *) vars[i].var) = TRUE;
else if (!dlg_strcmp(value, "OFF"))
*((bool *) vars[i].var) = FALSE;
else {
fprintf(stderr, "\nParse error: boolean value "
"expected at line %d of configuration "
"file (found %s).\n", l, value);
result = -1; /* parse aborted */
}
break;
}
#ifdef HAVE_COLOR
} else if ((i = find_color(var)) >= 0) {
int fg = 0;
int bg = 0;
int hl = 0;
if (str_to_attr(value, &fg, &bg, &hl) == -1) {
fprintf(stderr, "\nParse error: attribute "
"value expected at line %d of configuration "
"file.\n", l);
result = -1; /* parse aborted */
} else {
dlg_color_table[i].fg = fg;
dlg_color_table[i].bg = bg;
dlg_color_table[i].hilite = hl;
}
} else {
#endif /* HAVE_COLOR */
fprintf(stderr, "\nParse error: unknown variable "
"at line %d of configuration file:\n\t%s\n", l, var);
result = -1; /* parse aborted */
}
break;
case LINE_ERROR:
fprintf(stderr, "\nParse error: syntax error at line %d of "
"configuration file.\n", l);
result = -1; /* parse aborted */
break;
}
l++; /* next line */
}
(void) fclose(rc_file);
return result;
}
