fsm | lightweight Hierarchical/Finite-State Machine

 by   r-lyeh-archived C++ Version: Current License: Zlib

kandi X-RAY | fsm Summary

kandi X-RAY | fsm Summary

fsm is a C++ library typically used in User Interface applications. fsm has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

fsm ===. FSM is a lightweight finite-state machine class. Both Hierarchical FSM and simple FSM implementations are provided.
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              fsm has a low active ecosystem.
              It has 209 star(s) with 58 fork(s). There are 13 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 3 open issues and 2 have been closed. On average issues are closed in 2 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of fsm is current.

            kandi-Quality Quality

              fsm has no bugs reported.

            kandi-Security Security

              fsm has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              fsm is licensed under the Zlib License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              fsm releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            fsm Key Features

            No Key Features are available at this moment for fsm.

            fsm Examples and Code Snippets

            No Code Snippets are available at this moment for fsm.

            Community Discussions

            QUESTION

            How to set the FSM configuaration for Textricator PDF OCR reader?
            Asked 2021-May-17 at 22:43

            I'm trying to use the PDF document parser called Textricator. It can use 3 different methods for parsing a PDF with some common OCR libraries. (itext5, itext7, pdfbox) The available methods are: text, table and form. Text for normal raw OCR recognition, table to read out structured table data, and form for parsing less structured forms, using a Finite State Machine (FSM).

            However, I am not able to use the form parser. Perhaps I simply don't understand how to organize the many configuration states. The documentation is lacking a simple form example, and someone recently posted an attempt to read a very basic table using the form method, but was not able to. I also gave it a shot, but without any success.

            Q: Can someone help me configure the state machine in the YML file?
            (This is used to parse the demo file from one of that repo's issues, and shown in the copied screenshot below.)

            The YML configuration file.

            ...

            ANSWER

            Answered 2021-May-17 at 18:42

            As Textricator is kind of a hidden gem for pdf parsing imo, I'm happy to see someone using it and posted a config working with the sample document to the github issue:

            Source https://stackoverflow.com/questions/67258726

            QUESTION

            Multiple items matching in Verilog case statement
            Asked 2021-Apr-28 at 15:36

            I have a state machine with several states that are very similar. I could write it for each state, like in the following example:

            ...

            ANSWER

            Answered 2021-Apr-28 at 12:46

            case statement syntax allows for specifying multiple case item values separated by commas:

            Source https://stackoverflow.com/questions/67298095

            QUESTION

            Postgres Database size and Table size sum do not match up
            Asked 2021-Apr-16 at 11:49

            I experienced a storage issue and then found that my database was taking up 300GB using:

            ...

            ANSWER

            Answered 2021-Apr-16 at 11:49

            The issue appears to be connected to the dirty shutdown.

            The solution is posted on dba stackexchange: How to reclaim space taken by an index that partially built and was terminated by a power outage

            Should you suffer the same issue, check it for solution.

            Source https://stackoverflow.com/questions/67054750

            QUESTION

            Regular expression to get a strings depending on the length of a substring
            Asked 2021-Apr-14 at 23:13

            Can you please suggest if it possible and how to define regular expression for the next problem:

            I have 2 'binary' strings joined by a delimiter. Let's say the delimiter is always 3.

            Example of input data:

            ...

            ANSWER

            Answered 2021-Apr-14 at 08:49

            Since you specifically ask not for only a regular expression, but a finite state machine, I can specifically prove the impossibility. In a finite state machine, you must have some finite number n states. We need a state for every length of sequence of 1s found on the left side of the 3. Since we can have infinitely many possible lengths of sequences of 1s, it is impossible to encode this information in finitely many states.

            If you specifically limit the size of the left part, you effectively limit the maximum size of a sequence of 1s. This makes it possible, though still not practical.

            Suppose the size on the left is n. You would need a state for every possible combination of lengths of 1 that appear, which is O(2^n). Good luck writing a regular expression for that. You would probably effectively end up enumerating most possible combinations and use very little of the actual state machine logic.

            Example state machine for n=4: Note more than 16 states, and this is only the left side. Each "accepting" state here would need more complex logic to match the right side.

            Source https://stackoverflow.com/questions/67055831

            QUESTION

            dplyr function to combine repeated data, remove missing data, and maintain conflicting data
            Asked 2021-Apr-12 at 12:01

            I have a dataset where some entries appear more than once, sometimes with data in one entry that is missing in another, sometimes with completely missing data, and sometimes with conflicting data:

            ...

            ANSWER

            Answered 2021-Apr-12 at 09:24

            I have a data.table option for you

            Source https://stackoverflow.com/questions/67055389

            QUESTION

            how to combine repeated rows with missing fields R
            Asked 2021-Apr-12 at 00:15

            I have a a dataset with multiple repeated entries, the entries are largely the same, but with data missing, The missing data could be in any field except for the ID. For example:

            ...

            ANSWER

            Answered 2021-Apr-12 at 00:15

            Updated Special thanks to dear @akrun who does not hesitate to provide insight to our solutions and share his knowledge and experience with us.

            I hope this is what you are looking for:

            Source https://stackoverflow.com/questions/67050106

            QUESTION

            pyTransitions trigger() method blocks
            Asked 2021-Apr-06 at 11:44

            I have a fairly complex application involving a GUI front-end and several other classes, several of which are state machines based on the excellent pytransitions library. The application hangs at various times, and being multi-threaded it is difficult to debug, but I have reproduced a minimal example here:

            ...

            ANSWER

            Answered 2021-Apr-06 at 11:44

            The core Machine of pytransitions is neither threaded nor asynchronous. This means that when a callback does not return, the whole event processing and thus the trigger function will block. There are a variety of ways to deal with this. Which way to chose depends on your architecture. Providing MWE for all approaches is a bit too much for a SO answer but I can briefly outline how solutions could look like.

            Event-driven

            Since Machine_1 already has a reference to Machine_2 and Machine_2 is waiting for an event from Machine_1, you could model that transition explicitly:

            Source https://stackoverflow.com/questions/66908898

            QUESTION

            Inside result of regex matching
            Asked 2021-Apr-01 at 12:22

            I have a character stream, producing one char each step.

            • Step 1: produced character '1', final string '1'
            • Step 2: produced character '2', final string '12'
            • and so on...

            Each step I want to know if the produced final string (sum of every char produced) has possibility to be matched by regexp in the future.

            Example regex: ^\d{5}

            So the string '123' is not matched by this exact regex, but if the character stream produces two more digits, on the fifth step it would match. But the string 'a12' is already not matched and not possible to be matched in the future.

            My question is - is there a possibility to separate those two cases in regex matching engine? This looks like a FSM(finite state machine) task to check if the FSM has successful match, error or is in progress of its matching graph. I know that regex inside is FSM, but I don't know if it is possible to separate not matching case in two different cases as described above.

            ...

            ANSWER

            Answered 2021-Apr-01 at 12:22

            Following on from the comment, you could make use of boost::regex and its boost::regex_constants::match_partial flag...

            Source https://stackoverflow.com/questions/66902889

            QUESTION

            Can i transmit serial data only using a data cable via Raspberry pi 0 w's USB port?[]
            Asked 2021-Mar-28 at 08:32

            First i am a lost noob

            I have been recently trying to find out a way weather i can send serial data (large file like image data) only through the Rpi w 0's micro USB port using ttyGS0.but when i searched online i only found ways of setting up headless through serial and other stuff which was no what i wanted. But i did follow the tutorial half way

            • I went to '/boot/config.txt' and set 'dtoverlay=dwc2' at the end of the file after leaving a line

            • I went to '/boot/cmdline.txt' and did put 'modules-load=dwc2,g_serial' after 'rootwait' leaving a space

            Thinking i could just use the /dev/ttyGS0 in my serial program on the Rpi and send the data the data was being sent but on my PC when i tried to access my Rpi which was on comport 12 it said port not found and couldn't open it.But it was showing up in the device manager as 'PI USB to Serial(COM12)'

            Then i wondered weather it would be possible at all to access Rpi's comport this way.

            If that's the case, i want to know if there is any other way to access the Rpi's USB port only using the USB cable

            Note:-

            • I don't want to use Rpi's USB as a way of loging ie. 'headless setup'.i just want to receive serial data like an arduino.
            • I don't want to use the GPIO pins(i tried) as they can only send limited characters at a time and i want to send an image file. Very quickly.
            • I don't have any serial converters at hand so i could route it to the arduino and use /dev/ttyUSB0 then read it on PC. I just only want to use the USB cable.
            • In case this info is required:-
              • my pc is a probook 6560b running windows 7

            things i found while testing and stuff:-

            • I did do -lsusb command but i dint find my device on that list
            • I tried the 'ls /dev/ttyGS0' and i found '/dev/ttyGS0'
            • I checked many forums and some guys were asiking to use this command 'dmesg | grep tty'and show them the code . So i performed it i dont understand what alot in the piece of text means but if it would be helpfull i pasted it here:-
            ...

            ANSWER

            Answered 2021-Mar-28 at 08:32

            Ok looks like i made some progress till now I did this

            • I went to '/boot/config.txt' and set 'dtoverlay=dwc2' at the end of the file after leaving a line

            • I went to '/boot/cmdline.txt' and did put 'modules-load=dwc2,g_serial' after 'rootwait' leaving a space

            • I did this 'sudo nano /etc/rc.local' and placed 'modeprobe g_serial use_acm=0' before 'exit 0'

            • Then i performed this command 'sudo systemctl stop getty@ttyGS0.service' and then this 'sudo systemctl disable getty@ttyGS0.service' (i think disabling getty@ttyGS0.service and puting 'modeprobe g_serial use_acm=0' in the folder metioned above allowed rpi and pc to comunicate but then again i can be wrong )

            • then perfored a 'sudo reboot'

            this seemed to solve my problem

            but i have one more problem now whatever is sent from the rpi i can only recieve in the coolterm serial port reading software i cant seem to use read the port from processing for some reason (im using processing to later read the image file being sent) here is my current serial reading program in processing

            Source https://stackoverflow.com/questions/66741947

            QUESTION

            Need help understanding State Machines (C#/Unity)
            Asked 2021-Mar-21 at 08:42

            I'm struggling with this for a couple of weeks and need help with understanding and building a state machine for my game.

            What I need is something like this:

            Basically, FSM class is just for changing states:

            ...

            ANSWER

            Answered 2021-Mar-21 at 08:42

            I don't know unity, but I know state machines.

            First things first, your state machine diagram looks off. "states" can be considered objects, but one of your rectangles says "abstract class". You can never have an object of an abstract class.

            Anyhow. Like the word says, a "state" stores the state of an object or system. It's a form of memory. Based on that state and external variables things can happen

            The simplest form of a state machine in code uses something like an enum

            Source https://stackoverflow.com/questions/66729783

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install fsm

            You can download it from GitHub.

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            [Finite-State Machines: Theory and Implementation](http://gamedevelopment.tutsplus.com/tutorials/finite-state-machines-theory-and-implementation—​gamedev-11867).
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