[lttng-dev] [PATCH lttng-tools] utils: Rework utils_parse_size_suffix

Thibault, Daniel Daniel.Thibault at drdc-rddc.gc.ca
Thu Apr 10 16:22:42 EDT 2014

Date: Thu, 10 Apr 2014 14:43:38 -0400
From: Simon Marchi <simon.marchi at polymtl.ca>

>>>>   Should be "[...] should not begin with '-' [...]" (although it is 
>>>> true the size string should not *contain*, the test is only for 
>>>> *begins with*)

> I meant for it to search in the whole string, and that is what I think strchr does.

Oops, my bad.

> [...]
> +       if (num_end == str) {
> +               /* strtoull parsed nothing, not good. */
> +               DBG("utils_parse_size_suffix: strtoull had nothing good to parse.\n");
> +               ret = -1;
> +               goto end;
> +       }
>>>>   "utils_parse_size_suffix: zero-length size string." would be clearer.  Also note that the preceding DBG strings did not end with '\n'.

> This test indeed will catch zero-length strings. However, if you pass "hello", or "k", strtoull will just parse 0 characters and return the value 0. This test is for these cases as well, which are not zero-length strings. I agree that it's not very clear, but I have nothing better...

How about " utils_parse_size_suffix: size string does not begin with a number."?

Daniel U. Thibault
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