FILE *locate_file(char *override_filename,
char *home_dir_filename,
char *fallback_filename)
{
char *filename;
FILE *result;
errno = 0;
if (override_filename) {
if (string_Eq(override_filename, "-"))
return(stdin);
result = fopen(override_filename, "r");
if (!(result = fopen(override_filename, "r"))) {
/* <<<>>> */
fprintf(stderr, "zwgc: error while opening %s for reading: ",
override_filename);
perror("");
}
return(result);
}
if (home_dir_filename) {
filename = get_home_directory();
if (filename) {
filename = string_Concat(filename, "/");
filename = string_Concat2(filename, home_dir_filename);
result = fopen(filename, "r");
if (result) {
free(filename);
return(result);
}
if (errno != ENOENT) {
/* <<<>>> */
fprintf(stderr, "zwgc: error while opening %s for reading: ",
filename);
perror("");
free(filename);
return(result);
}
free(filename);
} else
ERROR("unable to find your home directory.\n");
}
if (fallback_filename) {
if (!(result = fopen(fallback_filename, "r"))) {
/* <<<>>> */
fprintf(stderr, "zwgc: error while opening %s for reading: ",
fallback_filename);
perror("");
}
return(result);
}
return(NULL);
}
static char *
eat_til_endshow(int start_line_no)
{
register int c;
string text_so_far = string_Copy("");
string next_line;
for (;;) {
/*
* Skip the spaces & tabs at the start of the current line:
*/
while ((c=input()), c==' ' || c=='\t') ;
unput(c);
/*
* Handle unterminated shows:
*/
if (!c) {
report_parse_error("unterminated show beginning", start_line_no);
free(text_so_far);
return(0);
}
/*
* Read in rest of the line (including the <cr> at end), allowing
* for escape codes and checking for "endshow{nonalpha}" at the
* start of the line. (Note: \<newline> is considered the
* end of a line here!)
*/
next_line = eat_show_line(1);
if (!next_line) /* i.e., is this the endshow line? */
return(text_so_far);
text_so_far = string_Concat2(text_so_far, next_line);
free(next_line);
}
}
/*
*
*/
char *
get_string_resource(string name,
string class)
{
string full_name, full_class;
int status;
char *type;
XrmValue value;
full_name = string_Concat(APPNAME, ".");
full_name = string_Concat2(full_name, name);
full_class = string_Concat(APPCLASS, ".");
full_class = string_Concat2(full_class, class);
status = XrmGetResource(x_resources, full_name, full_class, &type, &value);
free(full_name);
free(full_class);
if (status != True)
return(NULL);
if (string_Neq(type, "String"))
return(NULL);
return(value.addr);
}