commit 470e9c7b85958fe200634780d0102d0a91544b04 Author: Emil Date: Wed Sep 27 05:28:54 2023 +0000 init diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + 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. 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If not, see . + +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: + + Copyright (C) + 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. + +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". + + 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 +. + + 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 +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..39b30aa --- /dev/null +++ b/Makefile @@ -0,0 +1,17 @@ +#!/bin/make -f + +CFLAGS := -std=gnu99 -O2 -Wall -Wextra -Wpedantic -pipe + +baked: + ${LINK.c} baked.c -o baked + +bake: + ./baked ./baked.c + +install: baked + ./baked ./install + +clean: + -rm baked + +.PHONY: bake install clean diff --git a/README b/README new file mode 100644 index 0000000..3a6f29a --- /dev/null +++ b/README @@ -0,0 +1,24 @@ +baked, a baking accessory for all your embedded scripts needs. + +Simply embed EXEC: and :STOP into any file and it'll run just fine, example: + +EXEC:shell command ...:STOP + +you may see a real example in the primary and only source file: `baked.c', +and in `install.sh'. this is not targeted toward any language and should +be fairly flexible, especially when multi-line comments are available. + +Name/arg extension: + +$@: the name of the executed file +$*: the text of the filename before the last dot +$+: the remaining arguments to baked + +baked was inspired by Shake (formerly eMake), written by anon, which +you may view at + +Shake compatibility may be enabled with `CFLAGS='-DSHAKE_COMPAT' baked +baked.c', the format is `@COMPILECMD ...\n' a functioning example my +be found along side the other examples in `baked.c'. + +Baked is licensed under the GPLv3, See LICENSE. diff --git a/baked.c b/baked.c new file mode 100644 index 0000000..0a5b937 --- /dev/null +++ b/baked.c @@ -0,0 +1,296 @@ +/* baked.c - Ever burned a cake? + * + * Copyright 2023 Emil Williams + * + * baked is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 3 + * as published by the Free Software Foundation. + * + * You should have received a copy of the GNU General Public License + * version 3 along with this program. If not, see . + * + * This program is independent of language, it simply expects the notation as listed below, + * + * EXEC:cc baked.c -o baked -std=gnu99 -O2 -Wall -Wextra -Wpedantic -pipe $CFLAGS:STOP + * + * Which will run, and in this case, result in this program compiling itself. + * + * Another (functional) example: + EXEC: + CFLAGS='-std=gnu99 -O2 -Wall -Wextra -Wpedantic -pipe' + cc baked.c -o baked $CFLAGS # baked + :STOP + * + * See install.sh for another example coded into a different language. + * It is possible to override environmental variables, as in install.sh, + * you can then have some dynamism. + * + * Realistically, any traditional shell script could be composed in this + * fashion, and be embedded in any file. However, some programming languages + * may not have multiline comments, so you may be restricted to a single line. + * + * with the flag CFLAGS='-DSHAKE_COMPAT' Shake compatibility will be enabled, + * @COMPILECMD cc baked.c -o baked -std=gnu99 -O2 -Wall -Wextra -Wpedantic -pipe $CFLAGS # SHAKE_COMPAT enabled + * + * TODO + * + * 1. replace asserts with proper checks (maybe longjmp, however + * this might be costly, and might not satify -fanalyzer) + * 2. somehow convince the compiler to do NULL checks before g_... + * so that allocs can be minimized even further (maybe volatile) + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#ifndef SHAKE_COMPAT +# define HELP \ + "target-file\n" \ + "Use the format `EXEC:command ...:STOP' within the target-file\n" +# define START "EXEC:" +# define STOP ":STOP" +#else +# define HELP \ + "target-file\n" \ + "Use the format `@COMPILECMD command ...\n' within the target-file\n" +# define START "@COMPILECMD" +# define STOP "\n" +#endif + +#define DESC \ + "\t$@ returns target-file value\n" \ + "\t$* returns target-file without extension\n" \ + "\t$+ returns arguments\n" + +#define die(fmt, ...) do { _die(fmt, ##__VA_ARGS__); goto stop; } while (0) + +static const char * argv0; +static char * g_filename = NULL, * g_sh = NULL, * g_all = NULL; + +static void +_die(const char * fmt, + ...) +{ + va_list ap; + assert(fmt); + fprintf(stderr, "%s: ", argv0); + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + if (fmt[0] && + fmt[strlen(fmt)-1] == ':') + { + fputc(' ', stderr); + perror(NULL); + } + else + { fputc('\n', stderr); } +} + +static int +exists(const char * fn) +{ + struct stat buf; + if (!stat(fn,&buf) && + buf.st_mode & S_IFREG) + { return 1; } + return 0; +} + +static char * +load(const char * fn) +{ + size_t len; + char * buf; + FILE * fp = fopen(fn, "rb"); + if (fp) + { + fseek(fp, 0, SEEK_END); + len = ftell(fp); + rewind(fp); + buf = malloc(len + 1); + if (fread(buf, 1, len, fp) > strlen(STOP) + strlen(START)) + { + buf[len] = '\0'; + fclose(fp); + return buf; + } + fclose(fp); + free(buf); + } + return NULL; +} + +static void +swap(char * a, char * b) +{ + *a ^= *b; + *b ^= *a; + *a ^= *b; +} + +static int +root(char * root) +{ + char x[1] = "\0"; + int ret; + size_t len = strlen(root); + while (len && root[len] != '/') + { --len; } + if (!len) + { return 0; } + swap(root + len, x); + ret = chdir(root); + swap(root + len, x); + return ret; +} + +static char * +insert(const char * new, char * str, size_t offset, size_t shift) +{ + size_t len = strlen(new); + size_t max = strlen(str) + 1; + /* fprintf(stderr, "params '%s' '%s' %ld %ld\n", new, str, offset, shift); */ + str = realloc(str, max + len); + assert(str); + memmove(str + offset + len, str + offset + shift, max - offset - shift); + memcpy(str + offset, new, len); + return str; +} + +static char * +find(char * buf, const char * token) +{ + size_t len = strlen(token); + const char * stop = buf + strlen(buf); + do if (!strncmp(buf,token,len)) + { return buf + len; } + while (buf < stop && ++buf); + return NULL; +} + +static char * +expand(char * buf, size_t len) +{ + size_t i = 0; + char * str = ""; + ++len; + assert(buf); + for (i = 0; i < len; ++i) + { + if (buf[i] == '\\') + { i+=2; continue; } + if (buf[i] == '$') + { + switch (buf[++i]) + { + case '@': /* replace $@ with g_filename */ + str = g_filename; + break; + case '*': /* replace $* with short nm */ + str = g_sh; + break; + case '+': /* replace $+ with all args */ + str = g_all; + break; + default: continue; + } + buf = insert(str, buf, i - 1, 2); + len = strlen(buf); + } + } + return buf; +} + +static void +init(char ** argv, int argc) +{ + size_t i, len; + + /* g_filename */ + g_filename = malloc(strlen(argv[1]) + 1); + strcpy(g_filename, argv[1]); + + /* sh */ + { size_t last = 0; + len = strlen(argv[1]); /* co-opting len */ + g_sh = malloc(len + 1); + for (i = 0; i < len; ++i) + { + if (argv[1][i] == '.') + { last = i; } + } + last = last ? last : i; + strncpy(g_sh, argv[1], last); + g_sh[last] = '\0'; + } /* EOL last */ + /* all */ + if (argc > 2) + { + len = 0; + i = 2; + while (i < (size_t) argc) + { + len += strlen(argv[i]); + ++i; + } + g_all = malloc(len + 1); + g_all[len] = '\0'; + len = 0; + i = 2; + while (i < (size_t) argc) + { + strcpy(g_all + len, argv[i]); + len += strlen(argv[i]); + ++i; + } + } +} + +int +main(int argc, char ** argv) +{ + int ret = 0; + char * buf = NULL; + { size_t len; + { char * start, * stop; + + argv0 = argv[0]; + + if (argc < 2) + { die(HELP); } + + if (!exists(argv[1])) + { die("cannot access '%s':", argv[1]); } + + if (!(buf = load(argv[1])) + || root(argv[1])) + { die(errno ? NULL : "File too short"); } + + if (!(start = find(buf, START)) + || !(stop = find(start, STOP))) + { die("No usable format located in '%s'", argv[1]); } + init(argv, argc); + len = stop - start - strlen(STOP); + memmove(buf, start, len); + } /* EOL start stop*/ + buf = realloc(buf, len + 1); + buf[len] = '\0'; + fprintf(stderr, "Exec: %s\nOutput:\n", buf); + buf = expand(buf, len); + } /* EOL len */ + fprintf(stderr, "Result: %d\n", (ret = system(buf))); + +stop: + free(g_filename); + free(g_sh); + free(g_all); + free(buf); + return ret; +} diff --git a/install.sh b/install.sh new file mode 100755 index 0000000..69f0b4d --- /dev/null +++ b/install.sh @@ -0,0 +1,6 @@ +#!/bin/sh +#EXEC: + SUDO=${SUDO:-sudo} + cc baked.c -o baked -pipe -O2 -Wall -Wextra -Wpedantic -Wshadow -Wundef + $SUDO install -m 755 baked /usr/local/bin +#:STOP