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# ---> C
# Prerequisites
*.d
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*.idb
*.pdb
# Misc meta fles
*.user
*.debug
*.dirstamp
.vs/
.deps/
x64/
build-interp-*/
# Kernel Module Compile Results
*.mod*
*.cmd
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Module.symvers
Mkfile.old
dkms.conf

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CODE_OF_CONDUCT.md Normal file
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# Contributor Covenant Code of Conduct
## Our Pledge
We as members, contributors, and leaders pledge to make participation in our
community a harassment-free experience for everyone, regardless of age, body
size, visible or invisible disability, ethnicity, sex characteristics, gender
identity and expression, level of experience, education, socio-economic status,
nationality, personal appearance, race, religion, or sexual identity
and orientation.
We pledge to act and interact in ways that contribute to an open, welcoming,
diverse, inclusive, and healthy community.
## Our Standards
Examples of behavior that contributes to a positive environment for our
community include:
* Demonstrating empathy and kindness toward other people
* Being respectful of differing opinions, viewpoints, and experiences
* Giving and gracefully accepting constructive feedback
* Accepting responsibility and apologizing to those affected by our mistakes,
and learning from the experience
* Focusing on what is best not just for us as individuals, but for the
overall community
Examples of unacceptable behavior include:
* The use of sexualized language or imagery, and sexual attention or
advances of any kind
* Trolling, insulting or derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others' private information, such as a physical or email
address, without their explicit permission
* Other conduct which could reasonably be considered inappropriate in a
professional setting
## Enforcement Responsibilities
Community leaders are responsible for clarifying and enforcing our standards of
acceptable behavior and will take appropriate and fair corrective action in
response to any behavior that they deem inappropriate, threatening, offensive,
or harmful.
Community leaders have the right and responsibility to remove, edit, or reject
comments, commits, code, wiki edits, issues, and other contributions that are
not aligned to this Code of Conduct, and will communicate reasons for moderation
decisions when appropriate.
## Scope
This Code of Conduct applies within all community spaces, and also applies when
an individual is officially representing the community in public spaces.
Examples of representing our community include using an official e-mail address,
posting via an official social media account, or acting as an appointed
representative at an online or offline event.
## Enforcement
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported to the community leaders responsible for enforcement at
interval1066@gmail.com.
All complaints will be reviewed and investigated promptly and fairly.
All community leaders are obligated to respect the privacy and security of the
reporter of any incident.
## Enforcement Guidelines
Community leaders will follow these Community Impact Guidelines in determining
the consequences for any action they deem in violation of this Code of Conduct:
### 1. Correction
**Community Impact**: Use of inappropriate language or other behavior deemed
unprofessional or unwelcome in the community.
**Consequence**: A private, written warning from community leaders, providing
clarity around the nature of the violation and an explanation of why the
behavior was inappropriate. A public apology may be requested.
### 2. Warning
**Community Impact**: A violation through a single incident or series
of actions.
**Consequence**: A warning with consequences for continued behavior. No
interaction with the people involved, including unsolicited interaction with
those enforcing the Code of Conduct, for a specified period of time. This
includes avoiding interactions in community spaces as well as external channels
like social media. Violating these terms may lead to a temporary or
permanent ban.
### 3. Temporary Ban
**Community Impact**: A serious violation of community standards, including
sustained inappropriate behavior.
**Consequence**: A temporary ban from any sort of interaction or public
communication with the community for a specified period of time. No public or
private interaction with the people involved, including unsolicited interaction
with those enforcing the Code of Conduct, is allowed during this period.
Violating these terms may lead to a permanent ban.
### 4. Permanent Ban
**Community Impact**: Demonstrating a pattern of violation of community
standards, including sustained inappropriate behavior, harassment of an
individual, or aggression toward or disparagement of classes of individuals.
**Consequence**: A permanent ban from any sort of public interaction within
the community.
## Attribution
This Code of Conduct is adapted from the [Contributor Covenant][homepage],
version 2.0, available at
https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
Community Impact Guidelines were inspired by [Mozilla's code of conduct
enforcement ladder](https://github.com/mozilla/diversity).
[homepage]: https://www.contributor-covenant.org
For answers to common questions about this code of conduct, see the FAQ at
https://www.contributor-covenant.org/faq. Translations are available at
https://www.contributor-covenant.org/translations.

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LICENSE
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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for software and other kinds of works.
The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.
When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
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END OF TERMS AND CONDITIONS
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To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
interp
Copyright (C) 2025 interval
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
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GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
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the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
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NO WARRANTY
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
interp Copyright (C) 2025 interval
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <https://www.gnu.org/philosophy/why-not-lgpl.html>.
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

31
Makefile.am Normal file
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AUTOMAKE_OPTIONS = foreign
CFLAGS = -Wall -std=c11 -Wno-unused-result -Wno-unused-function -Wno-incompatible-pointer-types \
-Wno-discarded-qualifiers -Wno-int-conversion -Wno-parentheses
LDFLAGS +=-s
# this lists the binaries to produce, the (non-PHONY, binary) targets in
# the previous manual Makefile
sbin_PROGRAMS = interp help
interp_SOURCES = src/main.c \
src/intrinsic.c \
src/foo1.c \
src/utils/filesys.c \
src/utils/huff.c \
src/utils/config.c
AM_CPPFLAGS = -Wall -std=c11 -O2 -g0 -I$(top_srcdir)/include
man_MANS =
EXTRA_DIST = include/foo1.h \
include/intrinsic.h \
include/simple_strlib.h \
include/support.h \
include/utils/filesys.h \
include/utils/getopt.h \
include/utils/huff.h \
include/utils/config.h
help$(EXEEXT):
@echo "Installing interp help file"
cp ./extra/interp.hlp ~/.interp.hlp

12
README.md
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@ -1,12 +1,8 @@
# interp
Super simple arbitrary length, "first match", command interpeter for embedded projects in C11. I'm talking SIMPLE configuration, just try it. I'd be surprised if there's a easier to use parser than this one, unless it can be configured without re-compiling.<br><br>"Q", "qu", "qUi" (case insensitive and normalized to lower case), and "quit" will all exit the interpreter, for example. Generates its own menu, super light, and highly portable. Only depends on libconfig, and even that can be removed with little effort. See the "newcmds" markdown file for info on customizing and adding new commands.
interp
Have been getting a lot of positive reviews; as I said its VERY flexible and parses a treat with very little code. Needs more testing, but so far
I'm seeing that the first match action on this is great; say you have a command "get door". If both get and door are registered as a command and a parameter "g d" works fine, as long as they appear first in the command/parameter list. If not then again, next match. If "gummy door" is next in the list it will pick that up. Try it!
Super simple arbitrary length, "first match", command interpeter for embedded projects in C11. I'm talking SIMPLE configuration, just try it. I'd be surprised if there's a easier to use parser than this one, unless it can be configured without re-compiling.
"Q", "qu", "qUi" (case insensitive and normalized to lower case), and "quit" will all exit the interpreter, for example. Generates its own menu, super light, and highly portable. Only depends on libconfig, and even that can be removed with little effort. See the "newcmds" markdown file for info on customizing and adding new commands.
Have been getting a lot of positive reviews; as I said its VERY flexible and parses a treat with very little code. Needs more testing, but so far I'm seeing that the first match action on this is great; say you have a command "get door". If both get and door are registered as a command and a parameter "g d" works fine, as long as they appear first in the command/parameter list. If not then again, next match. If "gummy door" is next in the list it will pick that up. Try it!
(10/17/2024) Finally removed the dependancy on libconfig.
(10/17/2024) Finally removed the dependancy on libconfig.<br>
(10/20/2024) Code now handles back spaces on Windows.

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TODO.md Normal file
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- [X] Fix help file reader
- [X] Implement make install for help, ini files.
- [ ] Debug interpreter, seems to be some issues
- [X] Setting the prompt to the time or date output doesn't work, will need to surround command with escape characters I'm sure.
- [X] Need to check for the existence of motd, hlp, and so on or the app falls over when it assume they are availalbe and they aren't.
- [ ] At the point where I need to add that error reporting module.
- [X] Port to ARM64.
- [X] Probably getting close to time to think about changing the recursive makefile to a canonical makefile chain, or use cmake.
- [X] Same repo builds on Windows and Linux x64.
- [X] Fix stack corruption when windows version exits.
- [X] Report to the user that dependancies (like libconfig) aren't on the build host.
- [ ] Manpage? Maybe?
- [ ] Add some code that actually uses the threadpool.
- [ ] Check to see if the code is truly thread-safe, I'm sure its not (hello printf...)
- [X] Fix help system.
- [ ] Implement and USE uinfo struct in support.h.
- [ ] Add posix style command line options.
- [ ] Add case senitivity as an option (?).
- [X] Make use of encryption module.
- [X] Add a string member to the user context struct that holds the user's prompt so when user changes it it can be reflected immedaitely.
- [ ] Rename any "motd" references to "intrpmotd" or anything else, too easy to confuse with the actual linux motd file.
- [X] Process backspace characters.

10
autoclean.sh Executable file
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#!/bin/sh
#
# Clean autotools config, run in top directory
#
make clean
rm -rf autom4te.cache
rm aclocal.m4 compile config.h config.h.in config.log \
config.status configure depcomp install-sh Makefile.in \
missing stamp-h1 Makefile

1579
autogen.sh Executable file
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File diff suppressed because it is too large Load Diff

22
configure.ac Normal file
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AC_PREREQ([2.71])
AC_INIT([interp],[1.0],[interval1066@gmail.com])
AM_INIT_AUTOMAKE([subdir-objects])
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
AC_CONFIG_SRCDIR([src/main.c])
AC_CONFIG_HEADERS([config.h])
# Checks for programs.
AC_PROG_CXX
AC_PROG_CC
AC_LANG(C)
AC_LANG_PUSH([C])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],[],[AC_MSG_ERROR([No C compiler found])])
AC_LANG_POP([C])
# Checks for typedefs, structures, and compiler characteristics.
AC_CHECK_HEADER_STDBOOL
AC_C_INLINE
# Checks for library functions.
AC_OUTPUT

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detail.md Normal file
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# interp
Simple command interpeter for embedded projects in C. I needed to re-write a very badly written command shell for an internet appliance once. Too bad that company elected not to use it; "would cost to much to replace." Bad idea and I hope you're not using that product, it was a security nightmare. Also, for various technical reasons, this had to be written in linear C, not C++. Which is not really a bad way to go with some embedded platforms.
Although by no means useful as is, the design is really quite modular and loosely coupled; adding new commands to this is a simple matter of adding them to "commands" and "table" static members of the main module<sup>1</sup>, then adding their definitions to either the "foo1" translation unit or a completely new one, just add the new files with your functionality defined in them.
The "huff" module is a simple huffman encryption C implementation you can use to encrypt plain text, like the message of the day included example command. Use it to do just that or maybe a list of passwords or whatever, or completly remove it and make the app even smaller. Warning: its just that; a simple huffman encoding implementaion. Please use AES or something like that for really sensitive data. Its meant soley as a way to make non-critical data readable only through the app.
Action is a first match, arbitrary length thing; q, qu, and qui will all "quit" the interpreter, but quib will not. The logic that implements this is tiny (pretty terse pointer magic) and all contained in the main module<sup>1</sup> (but not in the main function, there's like two or three static functions in the main module that handle all this. It shouldn't be a huge climb to follow. That same magic extends to commands as parameters to the help module; simply typing "h a" will return info on the arp command, simply being entered into the "commands" and "table" tables is snough to have the application treat them like any other command.
As is the code compiles down to under 35K bytes<sup>3</sup>, filled out with some actually useful commands, stripped release, and an embedded clib, I figure you can have a board that can do things via this interpreter for well under 100KB or possibly less if you really watch your memory usage.
Builds its own command menu automgically, no need to update that. Detailed descriptions will need updating in extra/interp.hlp however. Rename to your actual application name and place in the $USER home directory.
Autoconf automatically provides an "install" command but there's no point in installing this. I'm going to remove the autoconf directive. You are welcome to use the autoconf install command if you want but its really kind of pointless. I would add that in your own finished package that uses this code.
As well as typical scripts for autotools there's a qtcreator project file and a visual studio 2022 project configuration just for fun.
Builds an ARMhf 32 bit target using the generic makefile in the linux subdirectory as long as you have the GCC ARMhf compiler installed on your system,
can probably target other platforms using GCC or LLVM.
To initiate an autotools build just run autogen.sh and follow the instructions, make sure that the execute bit is set on the automake and clean scripts. To build using the qtcreator project file load the project and select your build kit of choice. To build on Windows you'll need to reconfigure the project for your Win SDK, obviously. I'm on visual studio 2022, so you may need to create a project for your version and add the source modules manually. For visual studio code I have no idea, I rarely use that ide. For eclipse? Lift the voodoo curse off yourself and stop using it, you know that thing was originally written by IBM??
autoclean.sh should reset the entire source directory to the "ground state." See "newcmds.md" for instruction on adding commands to the interpreter. Take special note
of the user context struct, its key for makeing changes to the shell's environment without needing to re-start it.
Again, and probably can't be stressed enough; this project is a "starter" project for your own command line processor engine or shell utiity; the included commands in the foo1 source are just examples; all of them need to be replaced with your required functionality and the extra/interp.help updated with actual descriptions of your new commands. MAKE INSTALL will do NOTHING USEFUL, but you can use it if for some reason you must. Never the less this is fully functioning code (the foo commands don't do anything though, not really) I simply consider it bad form to provide broken example code. That said, there maybe be some "slightly" broken code here and there. Pleaase write me about it or submit your own patch if you like.
Depends on libconfig, barely. Can be easily removed if needed.
7/12/2024 Fixed flaw with the help code.
---
1. The code now counts the number of members in the table static global member automatically, no need for this constant anymore. Also, the "commands" & "table" structs have been moved to include/parser.h.<br>
2. This has been eliminated in subsequent versions.
3. Under 25K on windows.
9/11/2024 Uncovered some serious issues
---
Turns out libconfig sucks. You can't put arbitrary characters in the ini files, it either needs to have legitmate alphanumeric characters or no file. If it encounters, say stars or hashbangs it spews core. Unacceptable. So I'm going back to my original idea of writing my own ini parser. When I can. Really busy right now.
10/26/2024 Removed the libconfig dependancy
---
Got the above done.

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aaa|===||aaa <param>||Development test command.
access-lists|============||access-lists||List all access lists.
elist|====||elist <list> <no>||Edit the specified list or list all the available lists.
amp|===||amp <no>|Edit the properties of the specified amplifier.
arp|===||arp|List the arp table.
app|===||app <property>||Edit interpreter properites.
badl|====||badl <list entry>||Mark a list as being bad. Will be deleted AFTER the next processing cycle.
batch|=====||batch <list>||Execute a batch list.
bert|====||bert <no> (on/off)||Check the status or activate/deactivate the specified BERT device.
help|====||help <topic>||Get command list or detail on the specified topic.
motd|====||motd <message>||Set the message of the day for the interpreter. The message must be quote surrounded.
prompt|=====||prompt <new prompt>||Set a new prompt for the interpreter. The prompt will be avilable when the interpreter is re-started. The new prompt must be quote surrounded.
quit|====||quit||Exit the application.
date|====||date||Output the current date.
list|====||list <new list/(all)>||Create a new batch list, or list all existing lists.
time2|====||time2||Output the current time.
loglevel|====||loglevel||Log verbosity; from 0 (Off) to 4 (Maximum).
filet|====||filet||A fine cut of meat.

21
include/error_info.h Normal file
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#pragma once
typedef enum
{
CMD_MISPARAM = -11, // inimissing paramt file
CMD_MEMERR = -10,
CMD_INITNF = -9, // initialization file not found
CMD_HELPERR = -8, // problem with help subsystem
CMD_QUOTES = -7, // argument not enclosed in quotes
CMD_IOERR = -6, // io error
CMD_BANNERPTH = -5, //
CMD_FILEEXST = -4, // file exists
CMD_FILENF = -3, // file not found
CMD_ARGS = -2, // error with command arguments
CMD_ERR = -1, // non-specific error
CMD_OK = 0, // command completed successfully
CMD_QUIT = 1, // exit application
CMD_NOOP = 2 // no operation
} RET_CODE;
// Hashmap of pointers to error text and codes whatever else.

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#pragma once
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdbool.h>
#ifndef _WIN32
#include "utils/filesys.h"
#endif
#include "simple_strlib.h"
#include "error_info.h"
#ifdef __cplusplus
extern "C"{
#endif
int dummy(const char*);
int aaa(const char*);
int alist(const char*);
int amp(const char*);
int app(const char*);
int arp(const char*);
int badl(const char*);
int batch(const char*);
int bert(const char*);
int date(const char*);
int list(const char*);
int time2(const char*);
int loglevel(const char*);
int filet(const char*);
#ifdef __cplusplus
}
#endif

42
include/intrinsic.h Normal file
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#pragma once
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdbool.h>
#include "utils/filesys.h"
#include "utils/huff.h"
#include "error_info.h"
#ifdef _MSC_VER
#pragma warning( push )
#pragma warning( disable : 4090 )
#pragma warning( disable : 594 )
#pragma warning( disable : 542 )
#endif
extern const char dateout[16];
extern const char timeout[20];
extern const char* commands[];
extern const int noCmds;
#ifdef __cplusplus
extern "C" {
#endif
int help(const char*);
int find_help_section(const char*);
int motd(const char*);
int prompt(const char*);
int quit(const char*);
#ifdef _MSC_VER
#pragma warning ( pop )
#endif
#ifdef __cplusplus
}
#endif

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include/logger.h Normal file
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#pragma once
/**
* Logging thread, complately alpha code- may completely change form in the near future.
*/
inline int
StartLogger(int nLevel)
{
return CMD_OK;
}

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#pragma once
#include "foo1.h"
#ifdef _MSC_VER
#include <io.h>
#include "winunistd.h"
#define STRLWR _strlwr
extern size_t getline(char**, size_t*, FILE*);
#else
#include <unistd.h>
#include <libconfig.h>
extern char* strlwr(char*);
#define STRLWR strlwr
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _MSC_VER
#pragma warning( push )
#pragma warning( disable : 4090 )
#pragma warning( disable : 542 )
#endif
extern const char* strstrip(char*);
// Just a simple jump table
const char* commands[] = {
"dummy",
"help",
"aaa",
"access-lists",
"amplifiers",
"app",
"arp",
"badl",
"batch",
"bert",
"motd",
"prompt",
"quit",
"date",
"lists",
"time2",
"loglevel",
"filet",
"?" };
int (*table[])() = {
dummy, help, aaa, alist, amp, app, arp, badl, batch, bert,
motd, prompt, quit, date, list, time2, loglevel, filet,
};
#ifdef _MSC_VER
int const noCmds = _countof(table);
#else
const int noCmds = *(&table + 1) - table;
#endif
bool
run_cmd(int nCmd, char* full_cmd)
{
int n = 0;
if(nCmd == CMD_ERR) {
printf("\nUnknown command.\n");
return true;
}
// If help is invoked with '?'
if (nCmd == noCmds) nCmd = 1;
if((nCmd == 1) && (strlen(full_cmd) < 5)) {
printf("\n");
while (strchr(*(commands + ++n), '?') == NULL)
printf("- %s\n", *(commands + n));
printf("\n");
}
int nStatus = CMD_ERR;
int (**p)(char*);
p = table;
// command found, execute it.
nStatus = (*p[nCmd])(strstrip(full_cmd));
// if its the 'special' quit command; bail.
if (nStatus == CMD_QUIT)
return false;
return true;
}
/**
* @brief Process the commands rejecting those that aren't on the list
* This needs to be moved to another translation unit (completed 11/2023)
*
* @param char** inp The string to process
* @param int size The number of command elements
* @return boolean returns the status of the run_cmd
* function, which is only false if we
* process a quit command.
*/
bool
proc_cmds(char** inp, int size)
{
int n = 0, nCmd = 0;
bool bFound = false;
char full_cmd[200], cmd[40];
memset(full_cmd, '\n', sizeof(full_cmd));
memset(cmd, '\n', sizeof(cmd));
for(n = 0; n <= noCmds; n++) {
if(strncmp(inp[0],
*(commands + n),
strlen(strstrip(STRLWR(inp[0])))) == 0) {
bFound = true;
}
if(bFound) {
nCmd = n;
strcpy(full_cmd, *(commands + n));
for(int m = 1; m < size; m++) {
strcat(full_cmd, " ");
strcat(full_cmd, inp[m]);
}
printf("\n");
return run_cmd(nCmd, full_cmd);
}
}
return run_cmd(CMD_ERR, NULL);
}
#ifdef _MSC_VER
#pragma warning ( pop )
#endif
#ifdef __cplusplus
}
#endif

266
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#pragma once
#ifdef _MSVC_VER
#include <winunistd.h>
#endif
#include "support.h"
/**
* @file simple_strlib.h
* @brief Some additions that seem to be missing or
* are missing from the clib port.
*
* @details We've rolled our own string functions, they
* were either missing or I didn't like the way
* they worked. (I tend to favor in-place string
* manips for embedded work.) Needs to be tested
* for thread safety.
*
* @author t.o.
* @bug
*/
#include <string.h>
#include <stdint.h>
#include <ctype.h>
#include <stdlib.h>
#ifndef _WIN32
#include <sys/param.h>
#endif
#ifdef __cplusplus
extern "C"{
#endif
/**
* @brief strlwr
*
* @details My own version of strlwr, becuase clib
* doesn't appear to have one.
*
* @param s The string to convert
* @return pointer to the modified string
*/
inline char*
strlwr(char* s)
{
char* p = s;
while(*p) {
*p = tolower((uint32_t)*p);
p++;
}
return s;
}
/**
* @brief countc
*
* @details Count the number of occurrences of c in s
*
* @param s The target string
* @param c The character to count
* @return the count
*/
static inline int
countc(const char* s, char c)
{
int n = 0;
while(*s++ != '\0') {
if(*s == c)
n++;
}
return n;
}
/**
* @brief Strip trailing whitespace from s inplace
*
* @param s The string to trim
* @return the modified string
*/
inline const char*
strstrip(char* s)
{
size_t size = strlen(s);
if (!size)
return s;
char* end;
end = s + size - 1;
while(end >= s && isspace(*end))
end--;
*(end + 1) = '\0';
while(*s && isspace(*s))
s++;
return s;
}
/**
* @brief Split the string at delimiters using a zero-copy in-place algorithm
*
* @param s The string to split (every delimiter will be replaced by NULL)
* @param delimiter The delimiter character to split at
* @param size The size of the return array w
* @return A list of char* (size stored in *size), pointing to all split results in order
* Don't forget to free the returned array in the caller
*/
static inline char**
split(char* s, char delimiter, int* size)
{
int numdelimiters = countc(s, delimiter);
char** splitresult = malloc((numdelimiters + 2) * sizeof(char*)); // +2 for the last substring and NULL terminator
if (splitresult == NULL) {
*size = 0;
return NULL; // Memory allocation failed
}
splitresult[0] = s;
int i = 1;
char* hit = s;
while ((hit = strchr(hit, delimiter)) != NULL) {
*hit++ = '\0';
splitresult[i++] = hit;
}
splitresult[i] = NULL; // Mark the end of the splitresult array with NULL
*size = numdelimiters + 1;
return splitresult;
}
/**
* @breif Remove the substring matched. Operates
* in-place.
*
* @param the string to operate on
* @param the character sequence to remove
*/
static inline void
remove_first(char* str, const char* str_remove)
{
size_t j;
size_t len;
size_t remove_len;
int found = 0;
len = strlen(str);
remove_len = strlen(str_remove);
for(size_t i = 0; i < len; i++) {
found = 1;
for(j = 0; j < remove_len; j++) {
if(*(str + i + j) != *(str_remove + j)) {
found = 0;
break;
}
}
// If word has been found then remove it by shifting characters
if(found == 1) {
for(j = i; j <= len - remove_len; j++)
*(str + j) = *(str + j + remove_len);
// Terminate from loop so only first occurrence is removed
break;
}
}
}
/**
* @brief find first index of character in string
*
* @param string string to operate on
* @param char char to find index of
* @return integer index of the first occurance of char
*/
static inline int
find_ch_index(const char* string, char ch)
{
int i = 0;
while(*(string + i) && *(string + i) != ch) i++;
return *(string + i) == ch ? -1 : i;
}
/**
* @brief pass a substring of the source string through an i/o parameter
*
* @param char pointer source string
* @param start index of starting character for subsctring in source
* @param length of source string
* @param char pointer to destination string buffer
* @param length of destination string buffer
*/
static inline void
mid(const char* src, size_t start, size_t length, char* dst, size_t dstlen)
{
size_t len = MIN(dstlen, length);
strncpy(dst, src + start, len);
// zero terminate because strncpy() didn't ?
if(len < length)
dst[dstlen - 1] = 0;
}
static char*
right(char* string, int size)
{
while(*string++);
return(string - size - 2);
}
static char*
replace_char(char* str, char find, char replace){
char *current_pos = strchr(str,find);
while (current_pos) {
*current_pos = replace;
current_pos = strchr(current_pos,find);
}
return str;
}
static void
substr(const char* inputString, char delimiter, char** resultBuffer) {
// Find the first occurrence of the delimiter
const char* firstOccurrence = strchr(inputString, delimiter);
if (firstOccurrence == NULL) {
// Delimiter not found
*resultBuffer = NULL;
return;
}
// Find the second occurrence of the delimiter
const char* secondOccurrence = strchr(firstOccurrence + 1, delimiter);
if (secondOccurrence == NULL) {
// Second occurrence not found
*resultBuffer = NULL;
return;
}
// Calculate the length of the substring
size_t substringLength = secondOccurrence - (firstOccurrence + 1);
// Allocate memory for the result buffer
*resultBuffer = (char*)malloc(substringLength + 1);
if (*resultBuffer == NULL) {
// Memory allocation failed
fprintf(stderr, "Memory allocation failed\n");
exit(EXIT_FAILURE);
}
// Copy the substring into the result buffer
strncpy(*resultBuffer, firstOccurrence + 1, substringLength);
(*resultBuffer)[substringLength] = '\0'; // Null-terminate the string
}
#ifdef __cplusplus
}
#endif

57
include/support.h Normal file
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#pragma once
#ifdef _MSC_VER
#pragma warning( push )
#pragma warning( disable : 5945 )
#include <conio.h>
#else
#include <termios.h>
#endif
#include <string.h>
#include <stdbool.h>
#ifdef __cplusplus
extern "C"{
#endif
/**
* Internal objects ONLY
*/
#define MAXMOTD 512
#define MAXBUF 256
#ifndef SIZEARRAY
#define SIZEARRAY(a) (sizeof(a) / sizeof((a)[0]))
#endif
#ifndef MIN
#define MIN(a,b) (((a)<(b))?(a):(b))
#endif
#ifndef MAX
#define MAX(a,b) (((a)>(b))?(a):(b))
#endif
typedef int (*command_object)(char*);
//typedef enum {false, true} bool;
struct uinfo {
struct passwd* info;
};
struct user_ctx
{
int loglevel;
bool admin;
char prompt[16];
};
#ifdef __cplusplus
}
#endif
#ifdef _MSC_VER
#pragma warning( pop )
#endif

48
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#pragma once
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <threads.h>
#define DEFAULT_THREAD_POOL_SIZE 5
typedef struct ThreadPool ThreadPool;
typedef struct Task Task;
struct Task {
void (*function)(void* arg);
void* arg;
Task* next;
};
struct ThreadPool {
mtx_t lock;
cnd_t condition;
Task* task_queue;
thrd_t* threads;
size_t num_threads;
bool shutdown;
};
#ifdef __cplusplus
extern "C"{
#endif
// Function to initialize a thread pool
ThreadPool* thread_pool_init(size_t num_threads);
// Function to destroy a thread pool
void thread_pool_destroy(ThreadPool* pool);
// Function to add a task to the thread pool
bool thread_pool_enqueue(ThreadPool* pool, void (*function)(void*), void* arg);
// Function executed by each thread in the pool
int thread_function(void* arg);
#ifdef __cplusplus
}
#endif

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#ifndef _TCONFIG_H_
#define _TCONFIG_H_
#include <stdbool.h>
typedef struct ini_entry_s {
char* key;
char* value;
} ini_entry_s;
typedef struct ini_section_s {
char* name;
ini_entry_s* entry;
int size;
} ini_section_s;
typedef struct ini_table_s {
ini_section_s* section;
int size;
} ini_table_s;
/**
* @brief Creates an empty ini_table_s struct for writing new entries to.
* @return ini_table_s*
*/
ini_table_s* ini_table_create();
/**
* @brief Free up all the allocated resources in the ini_table_s struct.
* @param table
*/
void ini_table_destroy(ini_table_s* table);
/**
* @brief Creates an ini_table_s struct filled with data from the specified
* `file'. Returns NULL if the file can not be read.
* @param table
* @param file
* @return ini_table_s*
*/
bool ini_table_read_from_file(ini_table_s* table, const char* file);
/**
* @brief Writes the specified ini_table_s struct to the specified `file'.
* Returns false if the file could not be opened for writing, otherwise
* true.
* @param table
* @param file
* @return bool
*/
bool ini_table_write_to_file(ini_table_s* table, const char* file);
/**
* @brief Creates a new entry in the `table' containing the `key' and `value'
* provided if it does not exist. Otherwise, modifies an exsiting `key'
* with the new `value'
* @param table
* @param section_name
* @param key
* @param value
*/
void ini_table_create_entry(ini_table_s* table, const char* section_name,
const char* key, const char* value);
/**
* @brief Checks for the existance of an entry in the specified `table'. Returns
* false if the entry does not exist, otherwise true.
* @param table
* @param section_name
* @param key
* @return bool
*/
bool ini_table_check_entry(ini_table_s* table, const char* section_name,
const char* key);
/**
* @brief Retrieves the unmodified value of the specified `key' in `section_name'.
* Returns NULL if the entry does not exist, otherwise a pointer to the
* entry value data.
* @param table
* @param section_name
* @param key
* @return const char*
*/
const char* ini_table_get_entry(ini_table_s* table, const char* section_name,
const char* key);
/**
* @brief Retrieves the value of the specified `key' in `section_name', converted
* to int. Returns false on failure, otherwise true.
* @param table
* @param section_name
* @param key
* @param [out]value
* @return int
*/
bool ini_table_get_entry_as_int(ini_table_s* table, const char* section_name,
const char* key, int* value);
/**
* @brief Retrieves the value of the specified `key' in `section_name', converted
* to bool. Returns false on failure, true otherwise.
* @param table
* @param section_name
* @param key
* @param [out]value
* @return bool
*/
bool ini_table_get_entry_as_bool(ini_table_s* table, const char* section_name,
const char* key, bool* value);
#endif//_TCONFIG_H_

51
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#pragma once
#include <sys/types.h>
#include <stdlib.h>
#include <utils/filesys.h>
#include <sys/stat.h>
#include <stdbool.h>
#include <stdio.h>
#ifndef _MSC_VER
#include <pwd.h>
#include <unistd.h>
#else
#include <io.h>
#include <Shlobj.h>
#endif
#include "support.h"
#include "simple_strlib.h"
#include "error_info.h"
#define MAXSIZE 256
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file filesys.h
* @author Tim O'Neil
* @date 3/9/2018
*
* @brief System-specific & near system-specific utilities
*
* @section DESCRIPTION
*
* Collection of functions that will be more system specific
* and non-portable (mostly file systems utils and such).
*/
int find_cfgfile(const char*, char*, bool);
int create_cfgfile(const char*);
void get_userdir(char*);
int write_motd(char*, const char*);
int read_motd(const char*);
const char* get_keyvalue(const char*, const char*);
int set_keyvalue(const char*, const char*);
bool file_exists(const char*);
#ifdef __cplusplus
}
#endif

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/* A minimal POSIX getopt() implementation in ANSI C
*
* This is free and unencumbered software released into the public domain.
*
* This implementation supports the convention of resetting the option
* parser by assigning optind to 0. This resets the internal state
* appropriately.
*
* Ref: http://pubs.opengroup.org/onlinepubs/9699919799/functions/getopt.html
*/
#ifndef GETOPT_H
#define GETOPT_H
#include <ctype.h>
#include <stdio.h>
#include <string.h>
int optind;
int opterr = 1;
int optopt;
char *optarg;
int
getopt(int argc, char * const argv[], const char *optstring)
{
static int optpos = 1;
const char *arg;
/* Reset? */
if (optind == 0) {
optind = !!argc;
optpos = 1;
}
arg = argv[optind];
if (arg && strcmp(arg, "--") == 0) {
optind++;
return -1;
} else if (!arg || arg[0] != '-' || !isalnum(arg[1])) {
return -1;
} else {
const char *opt = strchr(optstring, arg[optpos]);
optopt = arg[optpos];
if (!opt) {
if (opterr && *optstring != ':')
fprintf(stderr, "%s: illegal option: %c\n", argv[0], optopt);
if (!arg[++optpos]) {
optind++;
optpos = 1;
}
return '?';
} else if (opt[1] == ':') {
if (arg[optpos + 1]) {
optarg = (char *)arg + optpos + 1;
optind++;
optpos = 1;
return optopt;
} else if (argv[optind + 1]) {
optarg = (char *)argv[optind + 1];
optind += 2;
optpos = 1;
return optopt;
} else {
if (opterr && *optstring != ':')
fprintf(stderr,
"%s: option requires an argument: %c\n",
argv[0], optopt);
if (!arg[++optpos]) {
optind++;
optpos = 1;
}
return *optstring == ':' ? ':' : '?';
}
} else {
if (!arg[++optpos]) {
optind++;
optpos = 1;
}
return optopt;
}
}
}
#endif

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#pragma once
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
/**
* @file huff.h
* @author Tim O'Neil
* @date 3/9/2018
*
* @brief Probably pretty portable Huffman coder
*
* @section DESCRIPTION
*
* Huffman ecoder to compress large blobs of text and anything
* meant to be read only through an application UI. This file
* defines some necessary structs and such. See the implementation
* file for more details.
*/
typedef struct node
{
char c;
int freq;
struct node *link;
struct node *rlink;
struct node *llink;
} node_t;
typedef struct List
{
node_t *head;
} List_t;
typedef struct
{
unsigned char c : 8;
} code_generated;
typedef struct
{
int freq;
unsigned char ch;
} info;
void decode(const char*);
void encode(const char*, char*);
void insert_in_list(List_t*, node_t*);
void init_list(List_t *ptr);
void disp_list(const List_t*);
void make_node(List_t*, int, char);
void make_list(List_t*, int*);
void find_freq(char*, int*);
void make_tree(List_t*, int*);
void find_code(node_t*, char*, char codes[256][40]);
void compress(char*, FILE*, char codes[256][40], int, info*, int*, int num);
unsigned char convert_string_char(char string[8]);
int find_no_of_chars(int*);
void strre(char*, int);
node_t* decode_char(FILE*, node_t*, int, int, node_t*, int*, int);
int create_header(int*, int, info*);

61
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# This is a recursive makefile- do not use in production
# convert to canonical make chain when time permits
#
# recursive file search
rfilelist=$(wildcard $1$2) $(foreach d,$(wildcard $1*),$(call rfilelist,$d/,$2))
# the name of program
TARGET = interp
CC = gcc
# C++ compiler flags
LIBS += -pthread -lconfig
EXT = c
# source files
SRC = ./src
SRCS := $(call rfilelist,$(SRC),*.$(EXT))
INCLUDES = ./include ./include/utils
CFLAGS := -Wall -std=c11 -c
CFLAGS += $(addprefix -I,$(INCLUDES))
OBJS = $(SRCS:%.$(EXT)=%.o)
DEBUG_HELPERS = $(SRCS:%.$(EXT)=%.debug)
OPTIMIZE_HELPERS = $(SRCS:%.$(EXT)=%.optim)
OBJDEBOUT = $(@:%.debug=%.o)
OBJOPTOUT = $(@:%.optim=%.o)
DEBOUT = $(@:%.debug=%.$(EXT))
OPTOUT = $(@:%.optim=%.$(EXT))
# rules for debug build and optimized build
%.debug: %.$(EXT)
$(CC) $(CFLAGS) -ggdb -D_DEBUG -DDEBUG -o $(OBJDEBOUT) $(DEBOUT)
rm -f $(@.debug=%.debug)
touch -f $@
%.optim: %.$(EXT)
$(CC) $(CFLAGS) -O2 -DNDEBUG -o $(OBJOPTOUT) $(OPTOUT)
rm -f $(@.optim=%.optim)
touch -f $@
# rules for object files
%.o: %.$(EXT)
$(CC) $(CFLAGS) $?
# default build
all: debug
# debug build
debug: $(DEBUG_HELPERS)
test -s $@ || mkdir $@
$(CC) $(OBJS) -o debug/$(TARGET) $(LIBS)
rm -f $(DEBUG_HELPERS)
# optimized build
optim: $(OPTIMIZE_HELPERS)
test -s $@ || mkdir $@
$(CC) $(OBJS) -o optim/$(TARGET) $(LIBS)
rm -f $(OPTIMIZE_HELPERS)
strip optim/$(TARGET)
# clean rule
clean:
rm -f $(OBJS) $(DEBUG_HELPERS) $(OPTIMIZE_HELPERS)

1
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Generic makefile, use this for hacking or building on other architectures. This will build on the Raspberry Pi as is.

39
linux/interp.pro Normal file
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TEMPLATE = app
CONFIG += console
CONFIG -= app_bundle
CONFIG -= qt
TARGET = interp
QMAKE_CFLAGS += -Wall -std=c17 -Wno-unused-parameter
QMAKE_CFLAGS += -Wno-unused-function -Wno-unused-result
QMAKE_CFLAGS += -Wno-discarded-qualifiers -Wno-int-conversion
QMAKE_CFLAGS += -Wno-incompatible-pointer-types
INCLUDEPATH += $$PWD/../include
LIBS += -lpthread
SOURCES += \
../src/foo1.c \
../src/intrinsic.c \
../src/support.c \
../src/main.c \
../src/support.c \
../src/utils/filesys.c \
../src/utils/huff.c \
../src/utils/config.c
HEADERS += \
../include/commands.h \
../include/foo1.h \
../include/intrinsic.h \
../include/parser.h \
../include/simple_strlib.h \
../include/support.h \
../include/utils/filesys.h \
../include/utils/huff.h \
../include/utils/config.h
CONFIG(release, debug|release) {
QMAKE_POST_LINK=$(STRIP) $(TARGET)
}

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newcmds.md Normal file
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### Adding New Commands to the Interpreter
<p>The code consists of intrinsic commands and add-on commands. Intrinsic commands shouldn't be modified
or expanded.</p>
<p>Add-on commands are all the other commands you can see in the "foo1" source file. Add-ons can be added to
those existing sources, added to an entirely new translation unit, to a static library or a shared lib, whatever
makes the most sense for your application. You're also welcome to remove all of those commands and add your own, of course.</p>
#### Adding a Log Level Command
<p>In this example, we'll add a new command called `loglevel` that will set the logging level of the of the
interpreter. There are lots of descisions to make in developing a loggng facility to an application; mostly
its scope, where it'll be written and its persistence, but since we won't actually implement a working logging
facility we'll just worry about adding the command to the interpreter.</p>
<p>Let's add the command "loglevel" with an integer parameter 0-4. 0 will mean logging off, and 4 is the highest
level of verbosity:</p>
1. Add our new command "loglevel" to the "commands" double array in the "parser.h" file. The question mark must be the last command in the array, and help must always be first:
``` c
const char* commands[] = { "dummy",
"help",
"aaa",
"access-lists",
"amplifiers",
"app",
<...>
"loglevel",
"?" };
```
2. Add a "loglevel" token to the "table" double array. Note, this is just an index token, not a string.
Importance is its place in the table, not its value:
``` c
int (*table[])() = {
dummy, help, aaa, alist, amp, app, arp, badl, batch, bert,
help, motd, prompt, quit, date, list, time2, loglevel
};
```
3. For statically linked commands define the function(s) for your new command in either foo1.c or add a new source file to the project. Add the new function prototypes to the appropriate header files. Use a pointer to the command invocation for access to parameters and delimeter processing; for example; if you want to use posix-style parameter marking ('-' & '--', and etc) define that in your new translation unit and pass all paramters through it before routing to the actual command definition. Look to the command examples in foo1.c for examples.
4. Add a useful description of the new command the ./extra/help file.
No modification of the parser code should be required for the UTF-8 charcter set-based projects. A list of all the commands is printed out when the user enters "help" or "?" and generated automtically from the available data. Command descriptions must be entered into the text file in the extra directory.
The "dummy" command is nessessary for now, obviously an index is off, I'll be getting rid of that when I find the error.
If you do see a problem a report would be appreciated. interval1066@gmail.com.

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#include <string.h>
#include "foo1.h"
#include "utils/filesys.h"
const char dateout[16];
const char timeout[20];
extern const char* commands;
extern const int noCmds;
extern struct user_ctx user;
#ifdef _MSC_VER
#pragma warning( push )
#pragma warning( disable : 836 )
#pragma warning( disable : 594 )
#pragma warning( disable : 4090 )
#pragma warning( disable : 859 )
#endif
/**
* Command objects. Normally these would go into separate translation units.
* Quit is a special command that has its own return status, needed to signal
* to main that we are exiting.
* Callee functions are responsible for parsing and converting the opts string
* for any necessary arguments.
*/
int
dummy(const char* opts)
{
return CMD_OK;
}
int
aaa(const char* opts)
{
int size;
char** splitresult = split(opts, ' ', &size);
if(size < 2)
printf("%s called with no options.\n", splitresult[0]);
for(int n = 1; n < size; n++)
printf("%s called with option %s.\n", splitresult[0], splitresult[n]);
free(splitresult);
return CMD_OK;
}
int
alist(const char* opts)
{
int size;
char** splitresult = split(opts, ' ', &size);
for(int n = 1; n < size; n++)
printf("access_lists called with option %s.\n", splitresult[n]);
free(splitresult);
return CMD_OK;
}
int
amp(const char* opts)
{
printf("amp called with %s\n", opts);
return CMD_OK;
}
int
app(const char* opts)
{
printf("app called with %s\n", opts);
return CMD_OK;
}
int
arp(const char* opts)
{
printf("arp called with %s\n", opts);
return CMD_OK;
}
int
badl(const char* opts)
{
int n = 0;
char line[100];
FILE* fp = fopen("./list.dev", "r");
if(!fp) {
printf("No lists have been created yet\n");
return CMD_FILEEXST;
}
while(fgets(line, sizeof(line), fp))
if(strlen(line) > 1) printf("%d - %s", ++n, line);
fclose(fp);
return CMD_OK;
}
int
batch(const char* opts)
{
printf("batch called with %s\n", opts);
return CMD_OK;
}
int
bert(const char* opts)
{
printf("bert called with %s\n", opts);
return CMD_OK;
}
int
get_date(const char* opts)
{
sprintf(opts, "%s\n", __DATE__);
return CMD_OK;
}
int
date(const char* opts)
{
memset((const char*)dateout, '\0', sizeof(dateout));
get_date(dateout);
printf("%s\n", dateout);
return CMD_OK;
}
int
get_time(const char* opts)
{
sprintf(opts, "%s\n", __TIME__);
return CMD_OK;
}
int
time2(const char* opts)
{
memset((const uint64_t*)timeout, '\0', sizeof(timeout));
get_time(timeout);
printf("%s\n", timeout);
return CMD_OK;
}
int
list(const char* opts)
{
FILE* f = NULL;
char buf[16] = { 0 };
char dev[16] = { 0 };
strncpy(buf, right(opts, (int)strlen(opts) - 6), strlen(opts) - 2);
if(strlen(buf) == 2)
return CMD_ARGS;
printf("%s\n", buf);
if(strcmp(buf, "all") == 0) {
badl(NULL);
return CMD_OK;
}
printf("Adding new device %s to list.\n", buf);
f = fopen("./list.dev", "w");
if(f == NULL)
return CMD_IOERR;
do {
scanf("%15s", dev);
if(strcmp(dev, ".") != 0)
fwrite(&dev, strlen(dev), 1, f);
fprintf(f, "\n");
} while(strlen(dev) > 1);
if(f) fclose(f);
return CMD_OK;
}
int
loglevel(const char* opts)
{
int size;
char** splitresult = split((const char*)opts, ' ', &size);
if(size == 1) {
printf("Current log level: %i\n", user.loglevel);
free(splitresult);
return CMD_OK;
}
int m = atoi(splitresult[1]);
if((m < 0) && m > 4)
return CMD_ARGS;
user.loglevel = m;
free(splitresult);
return CMD_OK;
}
int
filet(const char* opts)
{
return CMD_OK;
}
#ifdef _MSC_VER
#pragma warning( pop )
#endif

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#include "intrinsic.h"
extern struct user_ctx user;
extern int writeconfig();
#ifdef _MSC_VER
#pragma warning( push )
#pragma warning( disable : 4090 )
#pragma warning( disable : 594 )
#endif
int
help(const char* opts)
{
int size;
int retcode;
char** splitresult = split(opts, ' ', &size);
if(size == 1)
retcode = find_help_section(opts);
else
retcode = find_help_section(splitresult[1]);
free(&splitresult[0]);
return retcode;
}
int
find_help_section(const char* section)
{
bool found = false;
FILE* fp = NULL;
char cfg_path[MAXBUF];
char chunk[MAXBUF];
memset(cfg_path, 0, sizeof(cfg_path));
get_userdir(cfg_path);
#ifndef _MSC_VER
strcat(cfg_path, "/.interp.hlp");
#else
strcat(cfg_path, "\\.interp.hlp");
#endif
fp = fopen(cfg_path, "r");
if(!fp) return CMD_FILEEXST;
while(fgets(chunk, sizeof(chunk), fp) != NULL) {
int n = strncmp(section, chunk, strlen(section));
if(n == 0) {
replace_char(chunk, '|', '\n');
fputs(chunk, stdout);
found = true;
}
}
if((!found) && strncmp(section, "?", (size_t)1) != 0)
printf("Keyword not found\n");
if(fp) fclose(fp);
return CMD_OK;
}
int
motd(const char* string)
{
char cfg_path[MAXBUF];
char mot_path[MAXBUF];
if(strlen(string) < 3)
return CMD_ARGS;
if(strchr(string, '"') == NULL)
return CMD_QUOTES;
memset(cfg_path, 0, sizeof(cfg_path));
get_userdir(cfg_path);
strcpy(mot_path, cfg_path);
remove_first(mot_path, ".interp.ini");
#ifndef _MSC_VER
strcat(mot_path, "/.motd");
#else
strcat(mot_path, "\\.motd");
#endif
char newm[MAXMOTD];
memset(newm, '\0', MAXMOTD);
mid(string, 6, find_ch_index(string, '"'), newm, strlen(string));
remove_first(newm, "\"");
encode(mot_path, newm);
return CMD_OK;
}
int
prompt(const char* opts)
{
char *buf;
int n = countc(opts, '\"');
if (n < 2)
return CMD_ARGS;
substr(opts, '\"', &buf);
memset(user.prompt, 0, strlen(user.prompt));
strcpy(user.prompt, buf);
free(buf);
return CMD_OK;
}
int
quit(const char* opts)
{
return CMD_QUIT;
}
#ifdef _MSC_VER
#pragma warning( pop )
#endif

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#define _POSIX_C_SOURCE 200809L
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#include <stdbool.h>
#include <ctype.h>
#include <errno.h>
#include <signal.h>
#include "utils/config.h"
#include "intrinsic.h"
#include "support.h"
#include "parser.h"
#include "error_info.h"
#include "logger.h"
extern const int noCmds;
extern int help(const char*);
extern int StartLogger(int);
extern bool proc_cmds(char**, int);
struct user_ctx user;
char str[1024];
#define MAX_LINE 1024
/**
* @file main.c
* @author Tim O'Neil
* @date 3/9/2018
*
* @brief Probably pretty portable CLI interpreter
*
* @section DESCRIPTION test
*
* Alternate command line interpreter prototype.
*/
/**
* Anticipate ctrl + c
*
* no signals we need to handle as far as we
* know right now. May change in the future.
*/
void
sig_handler(int sign)
{
signal(SIGINT, sig_handler);
}
/**
* buffer sanitizer, on hold for now
*/
static int
sanitize_buf()
{
static char ok_chars[] = "abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"1234567890_-.@";
char user_data[] = "Bad char 1:} Bad char 2:{";
char *cp = user_data; // Cursor into string
const char *end = user_data + strlen(user_data);
for (cp += strspn(cp, ok_chars); cp != end; cp += strspn(cp, ok_chars))
*cp = '_';
return CMD_OK;
}
static void
reverse(char s[])
{
size_t i, j;
char c;
for (i = 0, j = (int)strlen(s) - 1; i < j; i++, j--) {
c = s[i];
s[i] = s[j];
s[j] = c;
}
}
static void
myitoa(int n, char s[])
{
size_t i, sign;
if ((sign = n) < 0) /* record sign */
n = -n; /* make n positive */
i = 0;
do { /* generate digits in reverse order */
s[i++] = n % 10 + '0'; /* get next digit */
} while ((n /= 10) > 0); /* delete it */
if (sign < 0)
s[i++] = '-';
s[i] = '\0';
reverse(s);
}
/**
* initial state
*
* set defaults including prompt which is a "> " (greater than + space), can be changed
* via the 'prompt' intrinsic command.
*/
static int
init(void)
{
char tmp[16] = { 0 };
memset(user.prompt, 0, sizeof(user.prompt));
strcpy(tmp, get_keyvalue("prompt", ""));
if(strlen(tmp) == 0)
strcpy(tmp, get_keyvalue("prompt", ">"));
#ifndef _MSC_VER
int len2 = (int)strlen(tmp);
tmp[len2 - 1] = '\0';
#endif
char banner_path[MAXBUF];
char cfg_path[MAXBUF];
signal(SIGINT, sig_handler);
memset(cfg_path, 0, sizeof(cfg_path));
memset(banner_path, 0, sizeof(banner_path));
get_userdir(cfg_path);
strcpy(banner_path, cfg_path);
#ifndef _MSC_VER
strcat(banner_path, "/.motd");
strcat(cfg_path, "/.interp.ini");
#else
strcat(banner_path, "\\.motd");
strcat(cfg_path, "\\.interp.ini");
#endif
if (access(banner_path, 0) == 0) {
decode(banner_path);
printf("\n");
}
return CMD_OK;
}
static int
readconfig(void)
{
user.admin = 0;
char adminperm[10] = { 0 };
char cfg_path[MAXBUF] = { 0 };
get_userdir(cfg_path);
#ifndef _MSC_VER
strcat(cfg_path, "/.interp.ini");
#else
strcat(cfg_path, "\\.interp.ini");
#endif
ini_table_s* config = ini_table_create();
if(ini_table_read_from_file(config, cfg_path)) {
strcpy(user.prompt, ini_table_get_entry(config, "Main", "prompt"));
user.loglevel = atoi(ini_table_get_entry(config, "Main", "loglevel"));
strcpy(adminperm, ini_table_get_entry(config, "Main", "admin"));
if(strcmp(adminperm, "true") == 0)
user.admin = 1;
}
ini_table_destroy(config);
return CMD_OK;
}
static int
writeconfig(void)
{
char cfg_path[MAXBUF] = { 0 };
char astr[10] = { 0 };
get_userdir(cfg_path);
#ifndef _MSC_VER
strcat(cfg_path, "/.interp.ini");
#else
strcat(cfg_path, "\\.interp.ini");
#endif
ini_table_s* config = ini_table_create();
if(ini_table_read_from_file(config, cfg_path)) {
ini_table_create_entry(config, "Main", "prompt", user.prompt);
myitoa(user.loglevel, astr);
ini_table_create_entry(config, "Main", "loglevel", astr);
if(user.admin == 1)
ini_table_create_entry(config, "Main", "admin", "true");
else
ini_table_create_entry(config, "Main", "admin", "false");
ini_table_write_to_file(config, cfg_path);
}
ini_table_destroy(config);
return CMD_OK;
}
#ifdef _MSV_VER
char*
get_cmdln(void)
{
char ch;
int i = 0, flag = 0;
for (i = 0; i < MAX_LINE && flag == 0; ++i) {
ch = _getch();
switch (ch) {
case 13:
str[i] = '\0';
flag = 1;
break;
case '\b':
if (i > 0) i--;
str[i--] = '\0';
printf("\b \b");
break;
default:
str[i] = ch;
printf("%c", ch);
}
}
str[strlen(str)] = '\0';
return &str[0];
}
#endif
/**
* main.c, pretty self explanitory I hope.
* Will be changed to take command line options eventually.
*/
int
main(int argc, char** argv)
{
size_t size, len;
bool bDo = true;
//char* cmd_string = NULL;
init();
readconfig();
do {
len = 0;
char* cmd_string = NULL;
printf("%s ", user.prompt);
#ifdef _MSV_VER
cmd_string = get_cmdln();
#else
getline(&cmd_string, &len, stdin);
#endif
size = (size_t)strlen(cmd_string);
char** splitresult = split(cmd_string, ' ', &size);
bDo = proc_cmds(splitresult, size);
free(&splitresult[0]);
} while (bDo);
writeconfig();
return EXIT_SUCCESS;
}

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#include "threadpool.h"
ThreadPool*
thread_pool_init(size_t num_threads)
{
ThreadPool* pool = malloc(sizeof(ThreadPool));
if(!pool) {
perror("Memory allocation failed for thread pool");
return NULL;
}
if (mtx_init(&pool->lock, mtx_plain) != thrd_success) {
perror("Mutex initialization failed");
free(pool);
return NULL;
}
if (cnd_init(&pool->condition) != thrd_success) {
perror("Condition variable initialization failed");
mtx_destroy(&pool->lock);
free(pool);
return NULL;
}
pool->task_queue = NULL;
pool->num_threads = num_threads > 0 ? num_threads : DEFAULT_THREAD_POOL_SIZE;
pool->shutdown = false;
pool->threads = malloc(pool->num_threads * sizeof(thrd_t));
if (!pool->threads) {
perror("Memory allocation failed for thread pool threads");
mtx_destroy(&pool->lock);
cnd_destroy(&pool->condition);
free(pool);
return NULL;
}
for (size_t i = 0; i < pool->num_threads; ++i) {
if (thrd_create(&pool->threads[i], thread_function, pool) != thrd_success) {
perror("Thread creation failed");
thread_pool_destroy(pool);
return NULL;
}
}
return pool;
}
void
thread_pool_destroy(ThreadPool* pool)
{
if (!pool)
return;
mtx_lock(&pool->lock);
pool->shutdown = true;
mtx_unlock(&pool->lock);
cnd_broadcast(&pool->condition);
for (size_t i = 0; i < pool->num_threads; ++i) {
thrd_join(pool->threads[i], NULL);
printf("Thread destroyed\n");
}
free(pool->threads);
mtx_destroy(&pool->lock);
cnd_destroy(&pool->condition);
free(pool);
}
bool
thread_pool_enqueue(ThreadPool* pool, void (*function)(void*), void* arg)
{
if (!pool || !function)
return false;
Task* new_task = malloc(sizeof(Task));
if (!new_task) {
perror("Memory allocation failed for new task");
return false;
}
new_task->function = function;
new_task->arg = arg;
new_task->next = NULL;
mtx_lock(&pool->lock);
if (pool->task_queue == NULL)
pool->task_queue = new_task;
else {
Task* last_task = pool->task_queue;
while (last_task->next != NULL)
last_task = last_task->next;
last_task->next = new_task;
}
cnd_signal(&pool->condition);
mtx_unlock(&pool->lock);
return true;
}
int
thread_function(void* arg)
{
ThreadPool* pool = (ThreadPool*)arg;
while (true) {
mtx_lock(&pool->lock);
while (!pool->task_queue && !pool->shutdown)
cnd_wait(&pool->condition, &pool->lock);
if (pool->shutdown) {
mtx_unlock(&pool->lock);
return thrd_success;
}
Task* task = pool->task_queue;
if (task) {
pool->task_queue = task->next;
}
mtx_unlock(&pool->lock);
if (task) {
task->function(task->arg);
free(task);
}
}
}

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#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(_WIN32) || defined(_WIN64)
#define strcasecmp _stricmp
#define strncasecmp _strnicmp
#else
#include <strings.h>
#endif
#include "utils/config.h"
static void print_log(int line, const char* msg, const char* extra)
{
printf("TConfig [Line: %i]: ", line);
printf(msg, extra);
printf("\n");
}
static ini_entry_s* _ini_entry_create(ini_section_s* section,
const char* key, const char* value)
{
if ((section->size % 10) == 0) {
section->entry =
realloc(section->entry, (10+section->size) * sizeof(ini_entry_s));
}
ini_entry_s* entry = &section->entry[section->size++];
entry->key = malloc((strlen(key)+1)*sizeof(char));
entry->value = malloc((strlen(value)+1)*sizeof(char));
strcpy(entry->key, key);
strcpy(entry->value, value);
return entry;
}
static ini_section_s* _ini_section_create(ini_table_s* table,
const char* section_name)
{
if ((table->size % 10) == 0) {
table->section =
realloc(table->section, (10+table->size) * sizeof(ini_section_s));
}
ini_section_s* section = &table->section[table->size++];
section->size = 0;
section->name = malloc((strlen(section_name)+1) * sizeof(char));
strcpy(section->name, section_name);
section->entry = malloc(10 * sizeof(ini_entry_s));
return section;
}
static ini_section_s* _ini_section_find(ini_table_s* table, const char* name)
{
for (int i = 0; i < table->size; i++) {
if (strcmp(table->section[i].name, name) == 0) {
return &table->section[i];
}
}
return NULL;
}
static ini_entry_s* _ini_entry_find(ini_section_s* section, const char* key)
{
for (int i = 0; i < section->size; i++) {
if (strcmp(section->entry[i].key, key) == 0) {
return &section->entry[i];
}
}
return NULL;
}
static ini_entry_s* _ini_entry_get(ini_table_s* table, const char* section_name,
const char* key)
{
ini_section_s* section = _ini_section_find(table, section_name);
if (section == NULL) {
return NULL;
}
ini_entry_s* entry = _ini_entry_find(section, key);
if (entry == NULL) {
return NULL;
}
return entry;
}
ini_table_s* ini_table_create()
{
ini_table_s* table = malloc(sizeof(ini_table_s));
table->size = 0;
table->section = malloc(10 * sizeof(ini_section_s));
return table;
}
void ini_table_destroy(ini_table_s* table)
{
for (int i = 0; i < table->size; i++) {
ini_section_s* section = &table->section[i];
for (int q = 0; q < section->size; q++) {
ini_entry_s* entry = &section->entry[q];
free(entry->key);
free(entry->value);
}
free(section->entry);
free(section->name);
}
free(table->section);
free(table);
}
bool ini_table_read_from_file(ini_table_s* table, const char* file)
{
FILE* f = fopen(file, "r");
if (f == NULL) return false;
enum {Section, Key, Value, Comment} state = Section;
int c;
int position = 0;
int spaces = 0;
int line = 0;
int buffer_size = 128 * sizeof(char);
char* buf = malloc(buffer_size);
char* value = NULL;
ini_section_s* current_section = NULL;
memset(buf, '\0', buffer_size);
while((c = getc(f)) != EOF) {
if (position > buffer_size-2) {
buffer_size += 128 * sizeof(char);
size_t value_offset = value == NULL ? 0 : value - buf;
buf = realloc(buf, buffer_size);
memset(buf+position, '\0', buffer_size-position);
if (value != NULL)
value = buf + value_offset;
}
switch(c) {
case ' ':
switch(state) {
case Value: if (value[0] != '\0') spaces++; break;
default: if (buf[0] != '\0') spaces++; break;
}
break;
case ';':
if (state == Value) {
buf[position++] = c;
break;
}
else {
state = Comment;
buf[position++] = c;
while (c != EOF && c != '\n') {
c = getc(f);
if (c != EOF && c != '\n') buf[position++] = c;
}
}
// fallthrough
case '\n':
// fallthrough
case EOF:
line++;
if (state == Value) {
if (current_section == NULL) {
current_section = _ini_section_create(table, "");
}
_ini_entry_create(current_section, buf, value);
value = NULL;
} else if (state == Comment) {
if (current_section == NULL) {
current_section = _ini_section_create(table, "");
}
_ini_entry_create(current_section, buf, "");
} else if (state == Section) {
print_log(line, "Section `%s' missing `]' operator.", buf);
} else if(state == Key && position) {
print_log(line, "Key `%s' missing `=' operator.", buf);
}
memset(buf, '\0', buffer_size);
state = Key;
position = 0;
spaces = 0;
break;
case '[':
state = Section;
break;
case ']':
current_section = _ini_section_create(table, buf);
memset(buf, '\0', buffer_size);
position = 0;
spaces = 0;
state = Key;
break;
case '=':
if (state == Key) {
state = Value;
buf[position++] = '\0';
value = buf + position;
spaces = 0;
continue;
}
default:
for(;spaces > 0; spaces--) buf[position++] = ' ';
buf[position++] = c;
break;
}
}
free(buf);
fclose(f);
return true;
}
bool ini_table_write_to_file(ini_table_s* table, const char* file)
{
FILE* f = fopen(file, "w+");
if (f == NULL) return false;
for (int i = 0; i < table->size; i++) {
ini_section_s* section = &table->section[i];
fprintf(f, i > 0 ? "\n[%s]\n" : "[%s]\n", section->name);
for (int q = 0; q < section->size; q++) {
ini_entry_s* entry = &section->entry[q];
if (entry->key[0] == ';') {
fprintf(f, "%s\n", entry->key);
} else {
fprintf(f, "%s = %s\n", entry->key, entry->value);
}
}
}
fclose(f);
return true;
}
void ini_table_create_entry(ini_table_s* table, const char* section_name,
const char* key, const char* value)
{
ini_section_s* section = _ini_section_find(table, section_name);
if (section == NULL) {
section = _ini_section_create(table, section_name);
}
ini_entry_s* entry = _ini_entry_find(section, key);
if (entry == NULL) {
entry = _ini_entry_create(section, key, value);
}else {
free(entry->value);
entry->value = malloc((strlen(value)+1) * sizeof(char));
strcpy(entry->value, value);
}
}
bool ini_table_check_entry(ini_table_s* table, const char* section_name,
const char* key)
{
return (_ini_entry_get(table, section_name, key) != NULL);
}
const char* ini_table_get_entry(ini_table_s* table, const char* section_name,
const char* key)
{
ini_entry_s* entry = _ini_entry_get(table, section_name, key);
if (entry == NULL) {
return NULL;
}
return entry->value;
}
bool ini_table_get_entry_as_int(ini_table_s* table, const char* section_name,
const char* key, int* value)
{
const char* val = ini_table_get_entry(table, section_name, key);
if (val == NULL) {
return false;
}
*value = atoi(val);
return true;
}
bool ini_table_get_entry_as_bool(ini_table_s* table, const char* section_name,
const char* key, bool* value)
{
const char* val = ini_table_get_entry(table, section_name, key);
if (val == NULL) {
return false;
}
if (strcasecmp(val, "on") == 0 || strcasecmp(val, "true") == 0) {
*value = true;
}else {
*value = false;
}
return true;
}

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#include "utils/filesys.h"
#include "utils/config.h"
#ifdef _MSC_VER
#pragma warning( push )
#pragma warning( disable : 594 )
#pragma warning( disable : 4047 )
#pragma warning( disable : 4024 )
#endif
/**
* @brief find_cfgfile search for ini in a few predefined locations
*
* @details make three attempts to locate the cfg file requested
* using three different strategies (/etc, $HOME, and
* the home for the current user using the passwd
* database), errors out with an integer code if
* finally unsuccessful. If the bUseDot is set the
* search will make the file name a dot file during
* search in the user directories
*
* @param const string file_name: name of cfg file to search for
* @param string path_found: result of successful search
* @param boolean make it a dot file flag
* @return integer status code, path_found is NULLed if unsuccessful
*/
#ifndef _MSC_VER
int
find_cfgfile(const char* file_name, char* path_found, bool bUseDot)
{
if(file_name == NULL && path_found == NULL)
return CMD_ARGS;
char search_this_path[MAXSIZE];
char* sp = &search_this_path[0];
strcpy(sp, "/etc");
// Search /etc first for a plain,
// un-decorated (no dot prefix)
// file_name
memset(sp, 0, strlen(search_this_path));
sp = strcpy(search_this_path, "/etc");
sp = strcat(search_this_path, "/");
sp = strcat(sp, file_name);
if(access(sp, F_OK) != -1 ) {
strcpy(path_found, sp);
return CMD_OK;
}
// then try for whatever is in $HOME,
// if bUseDot == true prefix the file
// name with a dot.
char* homedir = getenv("HOME");
if(homedir != NULL) {
memset(sp, 0, strlen(search_this_path));
strcpy(sp, homedir);
strcat(sp, "/");
if(bUseDot) strcat(sp, ".");
strcat(sp, file_name);
if(access(sp, F_OK) != -1 ) {
strcpy(path_found, sp);
return CMD_OK;
}
}
// Finally try the user's directory as
// specified in the passwd data base
uid_t uid = getuid();
struct passwd* pw = getpwuid(uid);
if(pw != NULL) {
memset(sp, 0, strlen(search_this_path));
strcpy(sp, pw->pw_dir);
strcat(sp, "/");
if(bUseDot) strcat(sp, ".");
strcat(sp, file_name);
if(access(search_this_path, F_OK) != -1 ) {
strcpy(path_found, sp);
return CMD_OK;
}
}
// nothing worked, set the result string
// param to null and return an error code
strcpy(path_found, "\0");
return CMD_FILENF;
}
#endif
/**
* @brief create_cfgfile create a new ini file
*
* @details copies the passed parameter to a buffer to
* protect against file names larger than 256
* chars.
*
* @param const char* the full path of the new file
* @return integer status code
*/
int
create_cfgfile(const char* file_path)
{
char cfg_path[MAXBUF];
memset(cfg_path, 0, sizeof(cfg_path));
get_userdir(cfg_path);
#ifndef _MSC_VER
strcat(cfg_path, "/.interp.ini");
#else
strcat(cfg_path, "\\.interp.ini");
#endif
ini_table_s* config = ini_table_create();
if(!ini_table_read_from_file(config, cfg_path)) {
// create new table
ini_table_create_entry(config, "Main", "prompt", "> ");
ini_table_create_entry(config, "Main", "loglevel", "0");
ini_table_create_entry(config, "Main", "admin", "false");
ini_table_write_to_file(config, cfg_path);
}
ini_table_destroy(config);
return CMD_OK;
}
#ifndef _MSC_VER
void
get_userdir(char* path)
{
uid_t uid = getuid();
struct passwd* pw = getpwuid(uid);
strcpy(path, pw->pw_dir);
}
#else
void
get_userdir(char* path)
{
wchar_t wpath[MAXBUF * 2] = { 0 };
if (FAILED(SHGetFolderPathW(NULL, CSIDL_PROFILE, NULL, 0, wpath)))
path = NULL;
else
wcstombs(path, wpath, MAXBUF);
}
#endif
int
write_motd(char* path, const char* motd)
{
char newm[MAXMOTD];
memset(newm, '\0', MAXMOTD);
mid(motd, 6, find_ch_index(motd, '"'), newm, strlen(motd));
remove_first(newm, "\"");
FILE* fp = fopen(path, "w");
if (fp == NULL) return CMD_ERR;
fprintf(fp, "%s", newm);
fclose(fp);
return CMD_OK;
}
int
read_motd(const char* path)
{
FILE* stream;
char line[MAXMOTD];
int errno;
errno = CMD_OK;
if((stream = fopen(path, "r")) != NULL) {
if (NULL != fgets(&line, MAXMOTD, stream))
errno = CMD_FILEEXST;
fclose(stream);
}
return errno;
}
const char*
get_keyvalue(const char* key, const char* def)
{
//struct config_setting_t const *setting;
char cfg_path[MAXBUF];
memset(cfg_path, 0, sizeof(cfg_path));
get_userdir(cfg_path);
#ifndef _MSC_VER
strcat(cfg_path, "/.interp.ini");
#else
strcat(cfg_path, "\\.interp.ini");
#endif
if(!file_exists(cfg_path))
create_cfgfile(cfg_path);
return "";
}
int
set_keyvalue(const char* key, const char* value)
{
char cfg_path[MAXBUF];
memset(cfg_path, 0, sizeof(cfg_path));
get_userdir(cfg_path);
#ifndef _MSC_VER
strcat(cfg_path, "/.interp.ini");
#else
strcat(cfg_path, "\\.interp.ini");
#endif
return CMD_OK;
}
bool
file_exists(const char* filename)
{
struct stat buffer;
return (stat (filename, &buffer) == 0);
}
#ifdef _MSC_VER
#pragma warning( pop )
#endif

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#define __STDC_WANT_LIB_EXT1__ 1
#include "utils/huff.h"
#include <string.h>
/**
* @file huff.c
* @author Tim O'Neil
* @date 3/9/2018
*
* @brief Probably pretty portable huffman coder
*
* @section DESCRIPTION
*
* Huffman coder for making text blobs psuedo-encrypted
* and psuedo-compressed and editable only through this
* the application (more or less). This code is not
* tested with other implementations, so its totally
* possible to be a wonky, one-off, not comatible, non-
* standard implementation (if there is such a thing.)
*/
/**
* @brief encode coder entrypoint, this one of our public facing
* interfaces, the other being decode, below.
*
* @details Given a buffer of text encode it and write the output
* to a file.
* @param const char* file_name2: path of output file
* @param char* buf: string containing text to encode
*/
void
encode(const char* file_name2, char* buf)
{
FILE* en;
int freq[256] = {0};
info header[256];
char codes[256][40];
char code[40];
strcpy(code, "");
List_t mylist_en;
size_t num, no_of_chars;
en = fopen(file_name2, "w");
if(en) {
find_freq(buf, freq);
no_of_chars = strlen(buf);
if(no_of_chars > 0) {
make_tree(&mylist_en, freq);
num = create_header(freq, (int)no_of_chars, header);
find_code(mylist_en.head, code, codes);
compress(buf, en, codes, (int)no_of_chars, header, freq, (int)num);
}
}
fclose(en);
}
/**
* @brief decode: decode a buffer of huffman encoded text
*
* @details Decode a file and send the output to stdout
*
* @param const char*: file_name1: path of input file
*/
void
decode(const char* file_name1)
{
info y, * ptrrr;
FILE* en;
ptrrr = &y;
code_generated x, * ptrr;
ptrr = &x;
List_t mylist_de;
int i, num, no_of_chars, count = 0;
int freq[256] = {0};
en = fopen(file_name1, "r");
if(en) {
fread(ptrr, sizeof(code_generated), 1, en);
num = ptrr->c;
for(i = 0; i < num; ++i) {
fread(ptrrr, sizeof(info), 1, en);
freq[(int)ptrrr->ch] = ptrrr->freq;
}
make_tree(&mylist_de, freq);
no_of_chars = find_no_of_chars(freq);
node_t* root = mylist_de.head;
node_t* ptr = root;
while(fread(ptrr, sizeof(code_generated), 1, en) == 1)
ptr = decode_char(stdout, ptr, ptrr->c, 1, root, &count, no_of_chars);
}
fclose(en);
}
node_t*
decode_char(FILE* de, node_t* ptr, int x, int y,
node_t* root, int* count, int no_of_chars)
{
if(y != 9 &&(*count) != no_of_chars) {
if(ptr->llink == 0 && ptr->rlink == 0) {
fputc(ptr->c, de);
ptr = root;
++(*count);
ptr = decode_char(de, ptr, x, y, root, count, no_of_chars);
}
else if(x % 2 == 0 && ptr->llink)
ptr = decode_char(de, ptr->llink, x / 2, ++y, root, count, no_of_chars);
else if(x%2!=0 && ptr->rlink)
ptr = decode_char(de, ptr->rlink, x / 2, ++y, root, count, no_of_chars);
}
return ptr;
}
void
insert_in_list(List_t*, node_t*);
void
init_list(List_t* ptr)
{
ptr->head = 0;
}
void
disp_list(const List_t* ptr)
{
node_t* temp = ptr->head;
while(temp) {
printf("%d( %c )\t",temp->freq,temp->c);
temp = temp->link;
}
printf("\n");
}
void
make_node(List_t* ptr, int n, char c)
{
node_t* temp;
temp = (node_t*)malloc(sizeof(node_t));
temp->freq = n;
temp->c = c;
temp->link = 0;
temp->rlink = 0;
temp->llink = 0;
insert_in_list(ptr, temp);
//free(temp);
}
void
insert_in_list(List_t* ptr, node_t* t)
{
if(ptr->head == 0)
ptr->head = t;
else {
node_t* prev = 0;
node_t* pres = ptr->head;
while(pres && pres->freq <= t->freq) {
prev = pres;
pres = pres->link;
}
if(pres == ptr->head) {
ptr->head = t;
t->link = pres;
}
else if(pres == 0)
prev->link = t;
else {
t->link = pres;
prev->link = t;
}
}
}
void
make_list(List_t* ptr, int* freq)
{
int i;
for(i = 0; i < 256; ++i) {
if(freq[i] != 0)
make_node(ptr, freq[i], i);
}
}
void
find_freq(char* fp, int* freq)
{
char c;
unsigned n = 0;
while(n < strlen(fp)) {
c = fp[n++];
++freq[(int)c];
}
}
void
make_tree(List_t* ptr, int* freq)
{
node_t * t1, * t2;
init_list(ptr);
make_list(ptr,freq);
while(ptr->head->link != 0) {
t1=ptr->head;
t2=ptr->head->link;
ptr->head=t2->link;
t1->link = 0;
t2->link = 0;
node_t* temp;
temp=(node_t*)malloc(sizeof(node_t));
temp->freq = t1->freq + t2->freq;
temp->c = 0;
temp->link = 0;
temp->rlink = t2;
temp->llink = t1;
insert_in_list(ptr, temp);
}
}
void
find_code(node_t* ptr, char* code, char codes[256][40])
{
char temp[40];
if(ptr->rlink == 0 && ptr->llink == 0)
strcpy(codes[(int)(ptr->c)], code);
if(ptr->rlink != 0) {
strcpy(temp, code);
strcat(temp, "1");
find_code(ptr->rlink, temp, codes);
}
if(ptr->llink != 0) {
strcpy(temp, code);
strcat(temp, "0");
find_code(ptr->llink, temp, codes);
}
}
int
find_no_of_chars(int* freq)
{
int i, sum = 0;
for(i = 0; i < 256; ++i)
sum = sum + freq[i];
return sum;
}
void
compress(char* fp, FILE* en, char codes[256][40],
int no_of_chars, info* header, int* freq, int num)
{
char ch;
int n = 0, i = 0, j = 0, count = 0, k, l;
unsigned char c;
code_generated x;
char string_rev[9];
x.c = num;
fwrite(&x, sizeof(code_generated), 1 ,en);
for(k = 0, l = 0; k < 256; ++k) {
if(freq[k]) {
fwrite(&header[l], sizeof(info), 1, en);
++l;
}
}
while((ch = fp[n++]) != EOF) {
j = 0;
++count;
while(codes[(int)ch][j] != '\0') {
string_rev[i] = codes[(int)ch][j];
++i; ++j;
if(i == 8) {
string_rev[i] = '\0';
strre(string_rev, (int)strlen(string_rev));
c = convert_string_char(string_rev);
strcpy(string_rev, "");
i = 0; x.c = c;
fwrite(&x,sizeof(x),1,en);
}
if(count == no_of_chars ) {
while(codes[(int)ch][j]) {
string_rev[i] = codes[(int)ch][j];
++i; ++j;
if(i == 8) {
string_rev[i] = '\0';
strre(string_rev, (int)strlen(string_rev));
c = convert_string_char(string_rev);
strcpy(string_rev, "");
i = 0; x.c=c;
fwrite(&x,sizeof(x),1,en);
}
}
string_rev[i] = '\0';
strre(string_rev, (int)strlen(string_rev));
c = convert_string_char(string_rev);
strcpy(string_rev, "");
x.c = c;
fwrite(&x, sizeof(x), 1, en);
}
}
}
}
void
strre(char* str, int n)
{
int i = 0, j = n - 1;
char temp;
while(i < j) {
temp = str[i];
str[i] = str[j];
str[j] = temp;
++i; --j;
}
str[n]='\0';
}
int
create_header(int* freq, int no_of_chars, info* header)
{
int i, j;
for(i = 0, j = 0; i < 256; ++i) {
if(freq[i] != 0) {
header[j].freq = freq[i];
header[j].ch = i;
++j;
}
}
return j;
}
unsigned char
convert_string_char(char string[8])
{
int i=0;
unsigned char c = 0;
while(string[i]) {
if(string[i] == '1') {
c = c * 2;
c = c + 1;
}
else
c = c * 2;
++i;
}
return c;
}

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windows/PropertySheet.props Normal file
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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ImportGroup Label="PropertySheets" />
<PropertyGroup Label="UserMacros">
<InterpExtra>$(ProjectDir)..\extra</InterpExtra>
</PropertyGroup>
<PropertyGroup />
<ItemDefinitionGroup>
<ClCompile>
<AdditionalIncludeDirectories>
</AdditionalIncludeDirectories>
</ClCompile>
</ItemDefinitionGroup>
<ItemGroup>
<BuildMacro Include="InterpExtra">
<Value>$(InterpExtra)</Value>
<EnvironmentVariable>true</EnvironmentVariable>
</BuildMacro>
</ItemGroup>
</Project>

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windows/README.md Normal file
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# Building interp on Windows
I configured this project with Visual Studio 2022, I hope you have few problems, I've been noticing
over the last few years Microsoft has been pretty good about making visual studio projects back rev
compatible, if you have problems would love to hear about them, send reports to
interval1066@gmail.com.
If you haven't done it yet configure vcpkg to work with vs2022 or your preferred version of VS, I
understand versions after 2017 can do this with varying degrees of success.
Follow the instructions here for installation and configuration of vcpckg:
https://devblogs.microsoft.com/cppblog/vcpkg-is-now-included-with-visual-studio/
That should be all you need to do. In visual studio look at the include list in filesys.h; line
7 should be the include for libconfig.h. If its not underlined then the project is probably
ready to build.
(10/17/2024) All dependancies on libconfig have been removed.

19
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#pragma once
#include <windows.h>
#define MAX_THREADS 10
typedef struct {
// Add any data members you need for your specific task
// ...
// Add synchronization objects if needed
CRITICAL_SECTION lock;
} TaskData;
typedef struct {
HANDLE hThread;
TaskData* pData;
} ThreadPoolThread;

62
windows/include/winunistd.h Normal file
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#ifndef _UNISTD_H
#define _UNISTD_H 1
/* This file intended to serve as a drop-in replacement for
* unistd.h on Windows.
* Please add functionality as neeeded.
* Original file from: http://stackoverflow.com/a/826027
*/
#include <stdlib.h>
#include <io.h>
#ifndef _MSC_VER
#include <getopt.h> /* getopt at: https://gist.github.com/bikerm16/1b75e2dd20d839dcea58 */
#endif
#include <process.h> /* for getpid() and the exec..() family */
#include <direct.h> /* for _getcwd() and _chdir() */
#define srandom srand
#define random rand
/* Values for the second argument to access.
These may be OR'd together. */
#define R_OK 4 /* Test for read permission. */
#define W_OK 2 /* Test for write permission. */
#define X_OK R_OK /* execute permission - unsupported in Windows,
use R_OK instead. */
#define F_OK 0 /* Test for existence. */
#define access _access
#define dup2 _dup2
#define execve _execve
#define ftruncate _chsize
#define unlink _unlink
#define fileno _fileno
#define getcwd _getcwd
#define chdir _chdir
#define isatty _isatty
#define lseek _lseek
/* read, write, and close are NOT being #defined here,
* because while there are file handle specific versions for Windows,
* they probably don't work for sockets.
* You need to look at your app and consider whether
* to call e.g. closesocket().
*/
#define ssize_t int
#define size_t ssize_t
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
/* should be in some equivalent to <sys/types.h> */
typedef __int8 int8_t;
typedef __int16 int16_t;
typedef __int32 int32_t;
typedef __int64 int64_t;
typedef unsigned __int8 uint8_t;
typedef unsigned __int16 uint16_t;
typedef unsigned __int32 uint32_t;
typedef unsigned __int64 uint64_t;
#endif /* unistd.h */

10
windows/interp.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>

31
windows/interp.sln Normal file
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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.8.34112.27
MinimumVisualStudioVersion = 10.0.40219.1
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "interp", "interp.vcxproj", "{8BF84208-506F-49D2-B39B-4726A266C6E4}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|x64 = Debug|x64
Debug|x86 = Debug|x86
Release|x64 = Release|x64
Release|x86 = Release|x86
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{8BF84208-506F-49D2-B39B-4726A266C6E4}.Debug|x64.ActiveCfg = Debug|x64
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173
windows/interp.vcxproj Normal file
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59
windows/src/winstring_ext.c Normal file
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#include <stdlib.h>
#include <stdio.h>
size_t
getline(char** lineptr, size_t* n, FILE* stream)
{
char* bufptr = NULL, * p = bufptr;
size_t size;
int c;
if (lineptr == NULL)
return -1;
if (stream == NULL)
return -1;
if (n == NULL)
return -1;
bufptr = *lineptr;
size = *n;
c = fgetc(stream);
if (c == EOF)
return -1;
if (bufptr == NULL) {
bufptr = malloc(128);
if (bufptr == NULL)
return -1;
size = 128;
}
p = bufptr;
while (c != EOF) {
if ((size_t)(p - bufptr) > (size - 1)) {
size = size + 128;
bufptr = realloc(bufptr, size);
if (bufptr == NULL)
return -1;
p = bufptr + (size - 128);
}
*p++ = c;
if (c == '\n')
break;
c = fgetc(stream);
}
*p++ = '\0';
*lineptr = bufptr;
*n = size;
return p - bufptr - 1;
}

46
windows/src/winthread.c Normal file
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#include "winthread.h"
TaskData yourTaskData;
ThreadPoolThread g_ThreadPool[MAX_THREADS];
DWORD WINAPI WorkerThread(LPVOID lpParam) {
TaskData* pData = (TaskData*)lpParam;
// Your thread's work goes here
// ...
// Release any resources or perform cleanup if needed
// ...
return 0;
}
void InitializeThreadPool() {
// Initialize the critical section
InitializeCriticalSection(&g_ThreadPool[0].pData->lock);
for (int i = 0; i < MAX_THREADS; ++i) {
// Initialize your task data structure and other necessary members
// ...
// Create threads
g_ThreadPool[i].pData = &yourTaskData; // Set your task data
g_ThreadPool[i].hThread = CreateThread(NULL, 0, WorkerThread, g_ThreadPool[i].pData, 0, NULL);
}
}
void CleanupThreadPool() {
for (int i = 0; i < MAX_THREADS; ++i) {
// Perform any cleanup or signal threads to exit gracefully
// ...
// Wait for thread termination
WaitForSingleObject(g_ThreadPool[i].hThread, INFINITE);
// Close thread handle
CloseHandle(g_ThreadPool[i].hThread);
}
// Delete the critical section
DeleteCriticalSection(&g_ThreadPool[0].pData->lock);
}