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soc:2009:lynusvaz:journal:week7 [2009/07/09 20:38] lynusvaz |
soc:2009:lynusvaz:journal:week7 [2009/07/12 11:46] (current) lynusvaz |
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| * [[http://git.etherboot.org/?p=people/lynusvaz/gpxe.git;a=commit;h=3bda90e89921b4963f85e79c2fcefa446972a1dc|--no-exit option with ${rc}]] | * [[http://git.etherboot.org/?p=people/lynusvaz/gpxe.git;a=commit;h=3bda90e89921b4963f85e79c2fcefa446972a1dc|--no-exit option with ${rc}]] | ||
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| + | July 10: I was out for most of today, and was able to work only in the evening. Tried to make a settings block, but ran into some trouble. ${rc/0} works, but ${rc/1} does not. That's because it sees the number as a tag, and looks for the corresponding setting, which doesn't exist. Then, I tried making a setting and adding it to the generic_settings list, but that doesn't work, either: it still looks for a tag. I'll try it again tomorrow. No commits today. | ||
| + | |||
| + | July 11: An interesting idea about the return code was to use a try-catch block instead of the rc stack: | ||
| + | try | ||
| + | kernel tftp://10.0.0.2//kernel | ||
| + | initrd tftp://10.0.0.2//initrd | ||
| + | boot | ||
| + | catch | ||
| + | echo "Boot failure" | ||
| + | done | ||
| + | Basically, the try-catch block works as an if-else block that can change its truth value as a statement fails. This fits in well with the work on branches and loops. So, I'm going to use this instead of the rc stack. In today's meeting, we discussed a few issues: | ||
| + | * Modifying the project plan to make it more specific | ||
| + | * Writing code with more focus on merging | ||
| + | |||
| + | July 12: Worked on adding try-catch statements to the scripting language. There is one issue though: what happens to loops inside a try block, e.g. | ||
| + | try | ||
| + | for i in 0 1 2 3 | ||
| + | do | ||
| + | ... | ||
| + | done | ||
| + | catch | ||
| + | ... | ||
| + | done | ||
| + | Stefan and I decided that the execution should immediately jump to the catch block. | ||
| + | Today's commits: | ||
| + | * [[http://git.etherboot.org/?p=people/lynusvaz/gpxe.git;a=commit;h=fc1265c3b28b30406127f87d7cf0dc916216f299|Try-catch-done]] | ||
| + | * [[http://git.etherboot.org/?p=people/lynusvaz/gpxe.git;a=commit;h=9b358af784b5691b77455fb3823b124b1f904c9d|Added a flags field to struct command.]]This will help shorten the execv() function, and help in extending, if required later. | ||
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