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authorPeter Korsgaard <jacmet@sunsite.dk>2011-02-02 11:48:58 +0100
committerPeter Korsgaard <jacmet@sunsite.dk>2011-02-02 15:54:50 +0100
commit72daa122b6a4a9562109299d0b747c71aac1e483 (patch)
treecc1dff80e1e89158b0cac778433fcea5c08ae5f9 /package/config/symbol.c
parent359a922659c6b33c44ab7c4f94de7d801a8bea63 (diff)
downloadbuildroot-novena-72daa122b6a4a9562109299d0b747c71aac1e483.tar.gz
buildroot-novena-72daa122b6a4a9562109299d0b747c71aac1e483.zip
package/config: rebase against 2.6.37-rc1
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Diffstat (limited to 'package/config/symbol.c')
-rw-r--r--package/config/symbol.c51
1 files changed, 49 insertions, 2 deletions
diff --git a/package/config/symbol.c b/package/config/symbol.c
index 1f8b30544..c0efe102d 100644
--- a/package/config/symbol.c
+++ b/package/config/symbol.c
@@ -350,7 +350,6 @@ void sym_calc_value(struct symbol *sym)
}
}
calc_newval:
-#if 0
if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) {
fprintf(stderr, "warning: (");
expr_fprint(sym->rev_dep.expr, stderr);
@@ -359,7 +358,6 @@ void sym_calc_value(struct symbol *sym)
expr_fprint(sym->dir_dep.expr, stderr);
fprintf(stderr, ")\n");
}
-#endif
newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
}
if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
@@ -842,6 +840,55 @@ struct symbol *sym_find(const char *name)
return symbol;
}
+/*
+ * Expand symbol's names embedded in the string given in argument. Symbols'
+ * name to be expanded shall be prefixed by a '$'. Unknown symbol expands to
+ * the empty string.
+ */
+const char *sym_expand_string_value(const char *in)
+{
+ const char *src;
+ char *res;
+ size_t reslen;
+
+ reslen = strlen(in) + 1;
+ res = malloc(reslen);
+ res[0] = '\0';
+
+ while ((src = strchr(in, '$'))) {
+ char *p, name[SYMBOL_MAXLENGTH];
+ const char *symval = "";
+ struct symbol *sym;
+ size_t newlen;
+
+ strncat(res, in, src - in);
+ src++;
+
+ p = name;
+ while (isalnum(*src) || *src == '_')
+ *p++ = *src++;
+ *p = '\0';
+
+ sym = sym_find(name);
+ if (sym != NULL) {
+ sym_calc_value(sym);
+ symval = sym_get_string_value(sym);
+ }
+
+ newlen = strlen(res) + strlen(symval) + strlen(src);
+ if (newlen > reslen) {
+ reslen = newlen;
+ res = realloc(res, reslen);
+ }
+
+ strcat(res, symval);
+ in = src;
+ }
+ strcat(res, in);
+
+ return res;
+}
+
struct symbol **sym_re_search(const char *pattern)
{
struct symbol *sym, **sym_arr = NULL;