#include <tic.h>
-MODULE_ID("$Id: read_entry.c,v 1.110 2011/08/13 21:10:03 tom Exp $")
+MODULE_ID("$Id: read_entry.c,v 1.111 2011/09/24 20:15:12 tom Exp $")
#define TYPE_CALLOC(type,elts) typeCalloc(type, (unsigned)(elts))
#define even_boundary(value) \
if ((value) % 2 != 0) Read(buf, 1)
+/*
+ * Return TGETENT_YES if read, TGETENT_NO if not found or garbled.
+ */
NCURSES_EXPORT(int)
_nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
-/* return 1 if read, 0 if not found or garbled */
{
int offset = 0;
int name_size, bool_count, num_count, str_count, str_size;
return (code);
}
+#if USE_HASHED_DB
+/*
+ * Return if if we can build the filename of a ".db" file.
+ */
+static bool
+make_db_filename(char *filename, unsigned limit, const char *const path)
+{
+ static const char suffix[] = DBM_SUFFIX;
+
+ unsigned lens = sizeof(suffix) - 1;
+ unsigned size = strlen(path);
+ unsigned test = lens + size;
+ bool result = FALSE;
+
+ if (test < limit) {
+ if (size >= lens
+ && !strcmp(path + size - lens, suffix))
+ (void) strcpy(filename, path);
+ else
+ (void) sprintf(filename, "%s%s", path, suffix);
+ result = TRUE;
+ }
+ return result;
+}
+#endif
+
+/*
+ * Return true if we can build the name of a filesystem entry.
+ */
+static bool
+make_dir_filename(char *filename,
+ unsigned limit,
+ const char *const path,
+ const char *name)
+{
+ unsigned need = (unsigned) (LEAF_LEN + 3 + strlen(path) + strlen(name));
+ bool result = FALSE;
+
+ if (need <= limit) {
+ (void) sprintf(filename, "%s/" LEAF_FMT "/%s", path, *name, name);
+ result = TRUE;
+ }
+ return result;
+}
+
/*
* Build a terminfo pathname and try to read the data. Returns TGETENT_YES on
* success, TGETENT_NO on failure.
{
int code = TGETENT_NO;
- /*
- * If we are looking in a directory, assume the entry is a file under that,
- * according to the normal rules.
- */
- unsigned need = (unsigned) (LEAF_LEN + 3 + strlen(path) + strlen(name));
- if (need <= limit)
- (void) sprintf(filename, "%s/" LEAF_FMT "/%s", path, *name, name);
-
- if (_nc_is_dir_path(path))
- code = _nc_read_file_entry(filename, tp);
- else {
#if USE_HASHED_DB
- static const char suffix[] = DBM_SUFFIX;
- DB *capdbp;
- unsigned lens = sizeof(suffix) - 1;
- unsigned size = strlen(path);
- unsigned test = lens + size;
-
- if (test < limit) {
- if (size >= lens
- && !strcmp(path + size - lens, suffix))
- (void) strcpy(filename, path);
- else
- (void) sprintf(filename, "%s%s", path, suffix);
-
- if ((capdbp = _nc_db_open(filename, FALSE)) != 0) {
- DBT key, data;
- int reccnt = 0;
- char *save = strdup(name);
-
- memset(&key, 0, sizeof(key));
- key.data = save;
- key.size = strlen(save);
-
- /*
- * This lookup could return termcap data, which we do not want.
- * We are looking for compiled (binary) terminfo data.
- *
- * cgetent uses a two-level lookup. On the first it uses the
- * given name to return a record containing only the aliases
- * for an entry. On the second (using that list of aliases as
- * a key), it returns the content of the terminal description.
- * We expect second lookup to return data beginning with the
- * same set of aliases.
- *
- * For compiled terminfo, the list of aliases in the second
- * case will be null-terminated. A termcap entry will not be,
- * and will run on into the description. So we can easily
- * distinguish between the two (source/binary) by checking the
- * lengths.
- */
- while (_nc_db_get(capdbp, &key, &data) == 0) {
- int used = data.size - 1;
- char *have = (char *) data.data;
-
- if (*have++ == 0) {
- if (data.size > key.size
- && IS_TIC_MAGIC(have)) {
- code = _nc_read_termtype(tp, have, used);
- if (code == TGETENT_NO) {
- _nc_free_termtype(tp);
- }
- }
- break;
+ DB *capdbp;
+
+ if (make_db_filename(filename, limit, path)
+ && (capdbp = _nc_db_open(filename, FALSE)) != 0) {
+
+ DBT key, data;
+ int reccnt = 0;
+ char *save = strdup(name);
+
+ memset(&key, 0, sizeof(key));
+ key.data = save;
+ key.size = strlen(save);
+
+ /*
+ * This lookup could return termcap data, which we do not want. We are
+ * looking for compiled (binary) terminfo data.
+ *
+ * cgetent uses a two-level lookup. On the first it uses the given
+ * name to return a record containing only the aliases for an entry.
+ * On the second (using that list of aliases as a key), it returns the
+ * content of the terminal description. We expect second lookup to
+ * return data beginning with the same set of aliases.
+ *
+ * For compiled terminfo, the list of aliases in the second case will
+ * be null-terminated. A termcap entry will not be, and will run on
+ * into the description. So we can easily distinguish between the two
+ * (source/binary) by checking the lengths.
+ */
+ while (_nc_db_get(capdbp, &key, &data) == 0) {
+ int used = data.size - 1;
+ char *have = (char *) data.data;
+
+ if (*have++ == 0) {
+ if (data.size > key.size
+ && IS_TIC_MAGIC(have)) {
+ code = _nc_read_termtype(tp, have, used);
+ if (code == TGETENT_NO) {
+ _nc_free_termtype(tp);
}
-
- /*
- * Just in case we have a corrupt database, do not waste
- * time with it.
- */
- if (++reccnt >= 3)
- break;
-
- /*
- * Prepare for the second level.
- */
- key.data = have;
- key.size = used;
}
-
- free(save);
+ break;
}
+
+ /*
+ * Just in case we have a corrupt database, do not waste time with
+ * it.
+ */
+ if (++reccnt >= 3)
+ break;
+
+ /*
+ * Prepare for the second level.
+ */
+ key.data = have;
+ key.size = used;
}
+
+ free(save);
+ } else /* may be either filesystem or flat file */
#endif
+ if (make_dir_filename(filename, limit, path, name)) {
+ code = _nc_read_file_entry(filename, tp);
+ }
#if USE_TERMCAP
- if (code != TGETENT_YES) {
- code = _nc_read_termcap_entry(name, tp);
- sprintf(filename, "%.*s", PATH_MAX - 1, _nc_get_source());
- }
-#endif
+ if (code != TGETENT_YES) {
+ code = _nc_read_termcap_entry(name, tp);
+ sprintf(filename, "%.*s", PATH_MAX - 1, _nc_get_source());
}
+#endif
return code;
}
#endif /* USE_DATABASE */
projects / ncurses.git / blobdiff