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authorVadim Bendebury (вб) <vbendeb@google.com>2009-12-20 00:29:49 -0800
committerMichal Marek <mmarek@suse.cz>2010-02-02 14:33:55 +0100
commitda60fbbcb637b37b1d77a41886ae4e275422ca96 (patch)
treeb75965f0cc17567b1b7723094e1e9358e23c3b12 /scripts/kconfig/expr.c
parent5358db0b0e16470337c6ec08177deb3f68ed7673 (diff)
downloadlinaro-lsk-da60fbbcb637b37b1d77a41886ae4e275422ca96.tar.gz
menuconfig: wrap long help lines
Help text for certain config options is very extensive (the text includes the names of all other options the option in question depends on). Long lines are not wrapped, making it impossible to see the list without scrolling horizontally. This patch adds some logic which wraps help screen lines at word boundaries to prevent truncating. Tested by running ARCH=powerpc make menuconfig O=/tmp/build which shows that the long lines are now wrapped, and ARCH=powerpc make xconfig O=/tmp/build to demonstrate that it still compiles and operates as expected. Signed-off-by: Vadim Bendebury <vbendeb@google.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'scripts/kconfig/expr.c')
-rw-r--r--scripts/kconfig/expr.c27
1 files changed, 25 insertions, 2 deletions
diff --git a/scripts/kconfig/expr.c b/scripts/kconfig/expr.c
index edd3f39a080..d83f2322893 100644
--- a/scripts/kconfig/expr.c
+++ b/scripts/kconfig/expr.c
@@ -1097,9 +1097,32 @@ void expr_fprint(struct expr *e, FILE *out)
static void expr_print_gstr_helper(void *data, struct symbol *sym, const char *str)
{
- str_append((struct gstr*)data, str);
+ struct gstr *gs = (struct gstr*)data;
+ const char *sym_str = NULL;
+
+ if (sym)
+ sym_str = sym_get_string_value(sym);
+
+ if (gs->max_width) {
+ unsigned extra_length = strlen(str);
+ const char *last_cr = strrchr(gs->s, '\n');
+ unsigned last_line_length;
+
+ if (sym_str)
+ extra_length += 4 + strlen(sym_str);
+
+ if (!last_cr)
+ last_cr = gs->s;
+
+ last_line_length = strlen(gs->s) - (last_cr - gs->s);
+
+ if ((last_line_length + extra_length) > gs->max_width)
+ str_append(gs, "\\\n");
+ }
+
+ str_append(gs, str);
if (sym)
- str_printf((struct gstr*)data, " [=%s]", sym_get_string_value(sym));
+ str_printf(gs, " [=%s]", sym_str);
}
void expr_gstr_print(struct expr *e, struct gstr *gs)