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Subject[PATCH v2 03/21] kconfig: move and rename sym_expand_string_value()
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This helper expands symbols contained in a string.  I am about to
change it to expand environments instead of symbols. Also, I will
add function expansion later.

Rename it to expand_string_value(), and move it to util.c, which is
a more suitable place.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

Changes in v2: None

scripts/kconfig/lkc.h | 1 +
scripts/kconfig/lkc_proto.h | 1 -
scripts/kconfig/symbol.c | 53 -------------------------------------------
scripts/kconfig/util.c | 55 ++++++++++++++++++++++++++++++++++++++++++++-
scripts/kconfig/zconf.y | 2 +-
5 files changed, 56 insertions(+), 56 deletions(-)

diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index f4394af..c8d9e55 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -111,6 +111,7 @@ void menu_finalize(struct menu *parent);
void menu_set_type(int type);

/* util.c */
+char *expand_string_value(const char *in);
struct file *file_lookup(const char *name);
int file_write_dep(const char *name);
void *xmalloc(size_t size);
diff --git a/scripts/kconfig/lkc_proto.h b/scripts/kconfig/lkc_proto.h
index 9dc8abf..9884adc 100644
--- a/scripts/kconfig/lkc_proto.h
+++ b/scripts/kconfig/lkc_proto.h
@@ -31,7 +31,6 @@ extern struct symbol * symbol_hash[SYMBOL_HASHSIZE];

struct symbol * sym_lookup(const char *name, int flags);
struct symbol * sym_find(const char *name);
-char *sym_expand_string_value(const char *in);
const char * sym_escape_string_value(const char *in);
struct symbol ** sym_re_search(const char *pattern);
const char * sym_type_name(enum symbol_type type);
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index f0b2e3b..03143b2 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -906,59 +906,6 @@ 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 '$'. Unknown symbol expands to
- * the empty string.
- */
-char *sym_expand_string_value(const char *in)
-{
- const char *src;
- char *res;
- size_t reslen;
-
- /*
- * Note: 'in' might come from a token that's about to be
- * freed, so make sure to always allocate a new string
- */
- reslen = strlen(in) + 1;
- res = xmalloc(reslen);
- res[0] = '\0';
-
- while ((src = strchr(in, '$'))) {
- 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) + 1;
- if (newlen > reslen) {
- reslen = newlen;
- res = xrealloc(res, reslen);
- }
-
- strcat(res, symval);
- in = src;
- }
- strcat(res, in);
-
- return res;
-}
-
const char *sym_escape_string_value(const char *in)
{
const char *p;
diff --git a/scripts/kconfig/util.c b/scripts/kconfig/util.c
index c6f6e21..22201a4 100644
--- a/scripts/kconfig/util.c
+++ b/scripts/kconfig/util.c
@@ -10,11 +10,64 @@
#include <string.h>
#include "lkc.h"

+/*
+ * Expand symbol's names embedded in the string given in argument. Symbols'
+ * name to be expanded shall be prefixed by a '$'. Unknown symbol expands to
+ * the empty string.
+ */
+char *expand_string_value(const char *in)
+{
+ const char *src;
+ char *res;
+ size_t reslen;
+
+ /*
+ * Note: 'in' might come from a token that's about to be
+ * freed, so make sure to always allocate a new string
+ */
+ reslen = strlen(in) + 1;
+ res = xmalloc(reslen);
+ res[0] = '\0';
+
+ while ((src = strchr(in, '$'))) {
+ 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) + 1;
+ if (newlen > reslen) {
+ reslen = newlen;
+ res = xrealloc(res, reslen);
+ }
+
+ strcat(res, symval);
+ in = src;
+ }
+ strcat(res, in);
+
+ return res;
+}
+
/* file already present in list? If not add it */
struct file *file_lookup(const char *name)
{
struct file *file;
- char *file_name = sym_expand_string_value(name);
+ char *file_name = expand_string_value(name);

for (file = file_list; file; file = file->next) {
if (!strcmp(name, file->name)) {
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index ad6305b..262c464 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -547,7 +547,7 @@ void conf_parse(const char *name)

tmp = rootmenu.prompt->text;
rootmenu.prompt->text = _(rootmenu.prompt->text);
- rootmenu.prompt->text = sym_expand_string_value(rootmenu.prompt->text);
+ rootmenu.prompt->text = expand_string_value(rootmenu.prompt->text);
free((char*)tmp);

menu_finalize(&rootmenu);
--
2.7.4
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