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Commit ce7ca716 authored by Michael Runge's avatar Michael Runge
Browse files

Enable incremental builder to find files that moved, and 

try to process them via patch + rename, instead of
delete + add.

b/11437930

Change-Id: I984349fbc9a8dac4379e00c0d66fc7d22c4eb834
parent 7fdeb1f9

updater/install.c

+35 −0
Original line number Diff line number Diff line
@@ -285,6 +285,40 @@ done: 
    return StringValue(result);

}



Value* RenameFn(const char* name, State* state, int argc, Expr* argv[]) {

    char* result = NULL;

    if (argc != 2) {

        return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);

    }



    char* src_name;

    char* dst_name;



    if (ReadArgs(state, argv, 2, &src_name, &dst_name) < 0) {

        return NULL;

    }

    if (strlen(src_name) == 0) {

        ErrorAbort(state, "src_name argument to %s() can't be empty", name);

        goto done;

    }

    if (strlen(dst_name) == 0) {

        ErrorAbort(state, "dst_name argument to %s() can't be empty",

                   name);

        goto done;

    }



    if (rename(src_name, dst_name) != 0) {

        ErrorAbort(state, "Rename of %s() to %s() failed, error %s()",

          src_name, dst_name, strerror(errno));

    } else {

        result = dst_name;

    }



done:

    free(src_name);

    if (result != dst_name) free(dst_name);

    return StringValue(result);

}



Value* DeleteFn(const char* name, State* state, int argc, Expr* argv[]) {

    char** paths = malloc(argc * sizeof(char*));
@@ -1425,6 +1459,7 @@ void RegisterInstallFunctions() { 


    RegisterFunction("read_file", ReadFileFn);

    RegisterFunction("sha1_check", Sha1CheckFn);

    RegisterFunction("rename", RenameFn);



    RegisterFunction("wipe_cache", WipeCacheFn);