95 lines
2.3 KiB
Bash
Executable File
95 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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# https://stackoverflow.com/a/13062682
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uncomment() {
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[ $# -eq 2 ] && arg="$1" || arg=""
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eval file="\$$#"
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sed 's/a/aA/g; s/__/aB/g; s/#/aC/g' "$file" | \
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gcc -P -E $arg - | \
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sed 's/aC/#/g; s/aB/__/g; s/aA/a/g'
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}
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# this is the magic that turns multiline statements into
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# single line statements
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# LITERALLY DOES NOT WORK WITH PREPROCESSOR
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onelineize() {
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grep -v '^#' | sed -e ':r;$!{N;br};s/\([^{;]\)\n\s*/\1 /g'
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}
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discard_preprocessors() {
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grep -v '#\(include\|if\|endif\)'
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}
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# sed regex for extracting data from function signature
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# if this isn't regex, idk what is
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# LUA_API (return type as \2) (function name as \3) (args as \4)
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sym_regex='^LUA\(LIB\)\?_API\s\+\([^(]\+\)\s*(\([^)]\+\))\s\+(\([^)]\+\))'
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# get funcptr declarations
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ptrize() {
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grep '^LUA' | sed -e "s/$sym_regex/static \2(*\3) (\4)/"
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}
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export_sym() {
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# don't even bother reading this again
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grep '^LUA' | sed -e "s/$sym_regex/\tIMPORT_SYMBOL(\3, \2, \4)/"
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}
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decl() {
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header="$(uncomment $1 | discard_preprocessors)"
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header1="$(onelineize <<< "$header")"
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# typedef
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grep -v '^\(LUA\|#\|extern\)' <<< "$header1"
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# funcptrs
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ptrize <<< "$header1"
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# defines
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grep '^#' <<< "$header"
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}
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decl_export() {
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uncomment $1 | onelineize | export_sym
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}
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LUA_PATH="$1"
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cat << EOF
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/**
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The lite_xl plugin API is quite simple. Any shared library can be a plugin file, so long
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as it has an entrypoint that looks like the following, where xxxxx is the plugin name:
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#include "lite_xl_plugin_api.h"
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int lua_open_lite_xl_xxxxx(lua_State* L, void* XL) {
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lite_xl_plugin_init(XL);
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...
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return 1;
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}
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In linux, to compile this file, you'd do: 'gcc -o xxxxx.so -shared xxxxx.c'. Simple!
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Due to the way the API is structured, you *should not* link or include lua libraries.
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This file was automatically generated by the below code. Do NOT MODIFY DIRECTLY.
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EOF
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cat "$0"
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cat << EOF
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**/
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#ifndef LITE_XL_PLUGIN_API
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#define LITE_XL_PLUGIN_API
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EOF
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decl "$LUA_PATH/lua.h"
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decl "$LUA_PATH/lauxlib.h"
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echo "#define IMPORT_SYMBOL(name, ret, ...) name = (ret (*) (__VA_ARGS__)) symbol(#name)"
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echo "static void lite_xl_plugin_init(void *XL) {"
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echo -e "\tvoid* (*symbol)(const char *) = (void* (*) (const char *)) XL;"
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decl_export "$LUA_PATH/lua.h"
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decl_export "$LUA_PATH/lauxlib.h"
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echo "}"
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echo "#endif"
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