| # |
| # Copyright (C) 2018 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| ########################################################### |
| ## Convert to lower case without requiring a shell, which isn't cacheable. |
| ## |
| ## $(1): string |
| ########################################################### |
| to-lower=$(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,f,$(subst G,g,$(subst H,h,$(subst I,i,$(subst J,j,$(subst K,k,$(subst L,l,$(subst M,m,$(subst N,n,$(subst O,o,$(subst P,p,$(subst Q,q,$(subst R,r,$(subst S,s,$(subst T,t,$(subst U,u,$(subst V,v,$(subst W,w,$(subst X,x,$(subst Y,y,$(subst Z,z,$1)))))))))))))))))))))))))) |
| |
| ########################################################### |
| ## Convert to upper case without requiring a shell, which isn't cacheable. |
| ## |
| ## $(1): string |
| ########################################################### |
| to-upper=$(subst a,A,$(subst b,B,$(subst c,C,$(subst d,D,$(subst e,E,$(subst f,F,$(subst g,G,$(subst h,H,$(subst i,I,$(subst j,J,$(subst k,K,$(subst l,L,$(subst m,M,$(subst n,N,$(subst o,O,$(subst p,P,$(subst q,Q,$(subst r,R,$(subst s,S,$(subst t,T,$(subst u,U,$(subst v,V,$(subst w,W,$(subst x,X,$(subst y,Y,$(subst z,Z,$1)))))))))))))))))))))))))) |
| |
| # Sanity-check to-lower and to-upper |
| lower := abcdefghijklmnopqrstuvwxyz-_ |
| upper := ABCDEFGHIJKLMNOPQRSTUVWXYZ-_ |
| |
| ifneq ($(lower),$(call to-lower,$(upper))) |
| $(error to-lower sanity check failure) |
| endif |
| |
| ifneq ($(upper),$(call to-upper,$(lower))) |
| $(error to-upper sanity check failure) |
| endif |
| |
| lower := |
| upper := |
