2021-10-20 04:38:48 +00:00
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/*
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** $Id: lua.c,v 1.160.1.2 2007/12/28 15:32:23 roberto Exp $
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** Lua stand-alone interpreter
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** See Copyright Notice in lua.h
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*/
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2021-11-14 01:42:39 +00:00
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#include <assert.h>
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2021-11-14 15:52:47 +00:00
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#include <ctype.h>
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2021-11-11 23:50:52 +00:00
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#include <fcntl.h>
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2021-11-07 04:49:23 +00:00
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#include <locale.h>
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2021-10-23 03:53:18 +00:00
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#include <ncurses.h>
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2021-10-20 04:38:48 +00:00
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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2021-11-06 20:10:22 +00:00
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#include <unistd.h>
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2021-10-20 04:38:48 +00:00
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#define lua_c
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#include "lua.h"
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#include "lauxlib.h"
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#include "lualib.h"
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static lua_State *globalL = NULL;
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static const char *progname = LUA_PROGNAME;
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static void lstop (lua_State *L, lua_Debug *ar) {
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(void)ar; /* unused arg. */
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lua_sethook(L, NULL, 0, 0);
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luaL_error(L, "interrupted!");
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}
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static void laction (int i) {
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signal(i, SIG_DFL); /* if another SIGINT happens before lstop,
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terminate process (default action) */
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lua_sethook(globalL, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1);
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}
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static void print_usage (void) {
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2021-10-23 03:53:18 +00:00
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printw(
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2021-10-20 04:38:48 +00:00
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"usage: %s [options] [script [args]].\n"
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"Available options are:\n"
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" -e stat execute string " LUA_QL("stat") "\n"
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" -l name require library " LUA_QL("name") "\n"
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" -i enter interactive mode after executing " LUA_QL("script") "\n"
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" -v show version information\n"
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" -- stop handling options\n"
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,
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progname);
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2021-10-23 03:53:18 +00:00
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refresh();
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2021-10-20 04:38:48 +00:00
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}
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static void l_message (const char *pname, const char *msg) {
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2021-11-14 16:46:24 +00:00
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if (!stdscr || isendwin()) {
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printf("%s: %s\n", pname, msg);
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exit(1);
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}
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if (pname) mvprintw(LINES-2, 0, "%s: ", pname);
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printw(msg);
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mvprintw(LINES-1, 0, "sorry, you'll need to edit the image directly. press any key to exit.");
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2021-10-23 03:53:18 +00:00
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refresh();
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2021-11-14 16:46:24 +00:00
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getch();
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2021-10-20 04:38:48 +00:00
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}
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static int report (lua_State *L, int status) {
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if (status && !lua_isnil(L, -1)) {
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const char *msg = lua_tostring(L, -1);
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if (msg == NULL) msg = "(error object is not a string)";
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l_message(progname, msg);
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lua_pop(L, 1);
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}
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return status;
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}
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static int traceback (lua_State *L) {
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if (!lua_isstring(L, 1)) /* 'message' not a string? */
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return 1; /* keep it intact */
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lua_getfield(L, LUA_GLOBALSINDEX, "debug");
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if (!lua_istable(L, -1)) {
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lua_pop(L, 1);
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return 1;
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}
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lua_getfield(L, -1, "traceback");
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if (!lua_isfunction(L, -1)) {
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lua_pop(L, 2);
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return 1;
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}
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lua_pushvalue(L, 1); /* pass error message */
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lua_pushinteger(L, 2); /* skip this function and traceback */
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lua_call(L, 2, 1); /* call debug.traceback */
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return 1;
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}
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static int docall (lua_State *L, int narg, int clear) {
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int status;
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int base = lua_gettop(L) - narg; /* function index */
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lua_pushcfunction(L, traceback); /* push traceback function */
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lua_insert(L, base); /* put it under chunk and args */
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signal(SIGINT, laction);
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status = lua_pcall(L, narg, (clear ? 0 : LUA_MULTRET), base);
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signal(SIGINT, SIG_DFL);
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lua_remove(L, base); /* remove traceback function */
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/* force a complete garbage collection in case of errors */
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if (status != 0) lua_gc(L, LUA_GCCOLLECT, 0);
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return status;
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}
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static void print_version (void) {
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l_message(NULL, LUA_RELEASE " " LUA_COPYRIGHT);
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}
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2021-11-11 06:04:36 +00:00
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/* pushes commandline args to the stack, then an array of all commandline args */
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2021-10-20 04:38:48 +00:00
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static int getargs (lua_State *L, char **argv, int n) {
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int narg;
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int i;
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int argc = 0;
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while (argv[argc]) argc++; /* count total number of arguments */
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narg = argc - (n + 1); /* number of arguments to the script */
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luaL_checkstack(L, narg + 3, "too many arguments to script");
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for (i=n+1; i < argc; i++)
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lua_pushstring(L, argv[i]);
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lua_createtable(L, narg, n + 1);
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for (i=0; i < argc; i++) {
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lua_pushstring(L, argv[i]);
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lua_rawseti(L, -2, i - n);
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}
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return narg;
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}
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static int dofile (lua_State *L, const char *name) {
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int status = luaL_loadfile(L, name) || docall(L, 0, 1);
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return report(L, status);
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}
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2021-11-13 22:54:13 +00:00
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static int dostring (lua_State *L, const char *s, const char *name) {
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2021-10-20 04:38:48 +00:00
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int status = luaL_loadbuffer(L, s, strlen(s), name) || docall(L, 0, 1);
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return report(L, status);
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}
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static int dolibrary (lua_State *L, const char *name) {
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lua_getglobal(L, "require");
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lua_pushstring(L, name);
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return report(L, docall(L, 1, 1));
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}
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static const char *get_prompt (lua_State *L, int firstline) {
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const char *p;
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lua_getfield(L, LUA_GLOBALSINDEX, firstline ? "_PROMPT" : "_PROMPT2");
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p = lua_tostring(L, -1);
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if (p == NULL) p = (firstline ? LUA_PROMPT : LUA_PROMPT2);
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lua_pop(L, 1); /* remove global */
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return p;
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}
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static int incomplete (lua_State *L, int status) {
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if (status == LUA_ERRSYNTAX) {
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size_t lmsg;
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const char *msg = lua_tolstring(L, -1, &lmsg);
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const char *tp = msg + lmsg - (sizeof(LUA_QL("<eof>")) - 1);
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if (strstr(msg, LUA_QL("<eof>")) == tp) {
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lua_pop(L, 1);
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return 1;
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}
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}
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return 0; /* else... */
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}
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static int pushline (lua_State *L, int firstline) {
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char buffer[LUA_MAXINPUT];
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char *b = buffer;
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size_t l;
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const char *prmt = get_prompt(L, firstline);
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2021-10-23 03:53:18 +00:00
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addstr(prmt);
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refresh();
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getnstr(b, LUA_MAXINPUT);
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2021-10-20 04:38:48 +00:00
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l = strlen(b);
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if (l > 0 && b[l-1] == '\n') /* line ends with newline? */
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b[l-1] = '\0'; /* remove it */
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if (firstline && b[0] == '=') /* first line starts with `=' ? */
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lua_pushfstring(L, "return %s", b+1); /* change it to `return' */
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else
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lua_pushstring(L, b);
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return 1;
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}
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static int loadline (lua_State *L) {
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int status;
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lua_settop(L, 0);
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if (!pushline(L, 1))
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return -1; /* no input */
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for (;;) { /* repeat until gets a complete line */
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2021-10-23 03:59:48 +00:00
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status = luaL_loadbuffer(L, lua_tostring(L, 1), lua_strlen(L, 1), "=keyboard");
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2021-10-20 04:38:48 +00:00
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if (!incomplete(L, status)) break; /* cannot try to add lines? */
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if (!pushline(L, 0)) /* no more input? */
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return -1;
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lua_pushliteral(L, "\n"); /* add a new line... */
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lua_insert(L, -2); /* ...between the two lines */
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lua_concat(L, 3); /* join them */
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}
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lua_remove(L, 1); /* remove line */
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return status;
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}
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static void dotty (lua_State *L) {
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int status;
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const char *oldprogname = progname;
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progname = NULL;
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while ((status = loadline(L)) != -1) {
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if (status == 0) status = docall(L, 0, 0);
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report(L, status);
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if (status == 0 && lua_gettop(L) > 0) { /* any result to print? */
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lua_getglobal(L, "print");
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lua_insert(L, 1);
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if (lua_pcall(L, lua_gettop(L)-1, 0, 0) != 0)
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l_message(progname, lua_pushfstring(L,
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"error calling " LUA_QL("print") " (%s)",
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lua_tostring(L, -1)));
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}
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}
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lua_settop(L, 0); /* clear stack */
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2021-10-23 03:53:18 +00:00
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refresh();
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2021-10-20 04:38:48 +00:00
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progname = oldprogname;
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}
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2021-11-14 16:01:49 +00:00
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void stack_dump (lua_State *L) {
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2021-11-11 06:04:36 +00:00
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int i;
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int top = lua_gettop(L);
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2021-11-21 00:16:00 +00:00
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int y = 1;
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2021-11-11 06:04:36 +00:00
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for (i = 1; i <= top; i++) { /* repeat for each level */
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int t = lua_type(L, i);
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switch (t) {
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case LUA_TSTRING: /* strings */
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2021-11-21 00:16:00 +00:00
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mvprintw(y, 30, "`%s'", lua_tostring(L, i));
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2021-11-11 06:04:36 +00:00
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break;
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case LUA_TBOOLEAN: /* booleans */
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2021-11-21 00:16:00 +00:00
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mvprintw(y, 30, lua_toboolean(L, i) ? "true" : "false");
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2021-11-11 06:04:36 +00:00
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break;
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case LUA_TNUMBER: /* numbers */
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2021-11-21 00:16:00 +00:00
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mvprintw(y, 30, "%g", lua_tonumber(L, i));
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2021-11-11 06:04:36 +00:00
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break;
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default: /* other values */
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2021-11-21 00:16:00 +00:00
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mvprintw(y, 30, "%s", lua_typename(L, t));
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2021-11-11 06:04:36 +00:00
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break;
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}
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2021-11-21 00:16:00 +00:00
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y++;
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mvprintw(y, 30, " "); /* put a separator */
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y++;
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2021-11-11 06:04:36 +00:00
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}
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2021-11-21 00:16:00 +00:00
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mvprintw(y, 30, "\n"); /* end the listing */
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y++;
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2021-11-11 06:04:36 +00:00
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}
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2021-11-11 07:19:05 +00:00
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char *Image_name = NULL;
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2021-11-11 06:04:36 +00:00
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static int handle_image (lua_State *L, char **argv, int n) {
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int status;
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int narg = getargs(L, argv, n); /* collect arguments */
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lua_setglobal(L, "arg");
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/* parse and load file contents (teliva_program table) */
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2021-11-11 07:19:05 +00:00
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Image_name = argv[n];
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status = luaL_loadfile(L, Image_name);
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2021-11-11 06:04:36 +00:00
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lua_insert(L, -(narg+1));
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if (status != 0) {
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return status;
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}
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status = docall(L, narg, 0);
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lua_getglobal(L, "teliva_program");
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int table = lua_gettop(L);
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/* parse and load each binding in teliva_program */
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for (lua_pushnil(L); lua_next(L, table) != 0; lua_pop(L, 1)) {
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const char* key = lua_tostring(L, -2);
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const char* value = lua_tostring(L, -1);
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2021-11-20 18:13:58 +00:00
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status = dostring(L, value, key);
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if (status != 0) return report(L, status);
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2021-11-11 06:04:36 +00:00
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}
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/* call main() */
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lua_getglobal(L, "main");
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2021-11-20 18:13:58 +00:00
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status = docall(L, 0, 1);
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if (status != 0) return report(L, status);
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2021-11-11 06:04:36 +00:00
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return 0;
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}
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2021-11-14 01:46:08 +00:00
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#define CURRENT_DEFINITION_LEN 256
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char Current_definition[CURRENT_DEFINITION_LEN+1] = {0};
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2021-11-14 00:28:13 +00:00
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void save_to_current_definition_and_editor_buffer (lua_State *L, const char *definition) {
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2021-11-14 01:46:08 +00:00
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strncpy(Current_definition, definition, CURRENT_DEFINITION_LEN);
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2021-11-12 00:32:08 +00:00
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lua_getglobal(L, "teliva_program");
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2021-11-13 23:07:14 +00:00
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lua_getfield(L, -1, Current_definition);
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2021-11-11 23:50:52 +00:00
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const char *contents = lua_tostring(L, -1);
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2021-11-12 00:09:46 +00:00
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lua_pop(L, 1);
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2021-11-13 23:07:14 +00:00
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int outfd = open("teliva_editbuffer", O_WRONLY|O_CREAT|O_TRUNC, 0644);
|
2021-11-12 01:41:37 +00:00
|
|
|
if (contents != NULL)
|
|
|
|
write(outfd, contents, strlen(contents));
|
2021-11-11 23:50:52 +00:00
|
|
|
close(outfd);
|
2021-11-14 01:48:04 +00:00
|
|
|
lua_settop(L, 0);
|
2021-11-12 00:16:55 +00:00
|
|
|
}
|
2021-11-11 23:50:52 +00:00
|
|
|
|
|
|
|
|
2021-11-13 22:54:13 +00:00
|
|
|
static void read_contents (lua_State *L, char *filename, char *out) {
|
2021-11-12 00:16:55 +00:00
|
|
|
int infd = open(filename, O_RDONLY);
|
|
|
|
read(infd, out, 8190); /* TODO: handle overly large file */
|
2021-11-11 23:50:52 +00:00
|
|
|
close(infd);
|
2021-11-12 00:16:55 +00:00
|
|
|
}
|
|
|
|
|
2021-11-11 23:50:52 +00:00
|
|
|
|
2021-11-12 00:16:55 +00:00
|
|
|
/* table to update is at top of stack */
|
2021-11-14 00:28:13 +00:00
|
|
|
static void update_definition (lua_State *L, const char *name, char *out) {
|
2021-11-14 01:48:04 +00:00
|
|
|
lua_getglobal(L, "teliva_program");
|
2021-11-12 00:16:55 +00:00
|
|
|
lua_pushstring(L, out);
|
2021-11-14 01:42:39 +00:00
|
|
|
assert(strlen(name) > 0);
|
2021-11-11 23:50:52 +00:00
|
|
|
lua_setfield(L, -2, name);
|
2021-11-14 01:48:04 +00:00
|
|
|
lua_settop(L, 0);
|
2021-11-12 00:16:55 +00:00
|
|
|
}
|
|
|
|
|
2021-11-11 23:50:52 +00:00
|
|
|
|
2021-11-13 22:54:13 +00:00
|
|
|
static void save_image (lua_State *L) {
|
2021-11-14 01:48:04 +00:00
|
|
|
lua_getglobal(L, "teliva_program");
|
2021-11-11 23:50:52 +00:00
|
|
|
int table = lua_gettop(L);
|
|
|
|
FILE* fp = fopen(Image_name, "w");
|
|
|
|
fprintf(fp, "teliva_program = {\n");
|
|
|
|
for (lua_pushnil(L); lua_next(L, table) != 0; lua_pop(L, 1)) {
|
|
|
|
const char* key = lua_tostring(L, -2);
|
|
|
|
const char* value = lua_tostring(L, -1);
|
2021-11-14 08:49:40 +00:00
|
|
|
fprintf(fp, " %s = [==[", key);
|
2021-11-11 23:50:52 +00:00
|
|
|
fprintf(fp, "%s", value);
|
2021-11-14 08:49:40 +00:00
|
|
|
fprintf(fp, "]==],\n");
|
2021-11-11 23:50:52 +00:00
|
|
|
}
|
|
|
|
fprintf(fp, "}\n");
|
|
|
|
fclose(fp);
|
2021-11-14 01:48:04 +00:00
|
|
|
lua_settop(L, 0);
|
2021-11-11 23:50:52 +00:00
|
|
|
}
|
|
|
|
|
2021-11-11 06:15:13 +00:00
|
|
|
|
2021-11-12 00:11:57 +00:00
|
|
|
/* death and rebirth */
|
|
|
|
char **Argv = NULL;
|
2021-11-14 16:01:49 +00:00
|
|
|
extern void edit (lua_State *L, char *filename, const char *message);
|
2021-11-14 17:30:27 +00:00
|
|
|
extern void clearEditor (void);
|
2021-11-14 16:01:49 +00:00
|
|
|
extern int editorOpen (char *filename);
|
2021-11-20 18:10:26 +00:00
|
|
|
void edit_buffer (lua_State *L, const char *message) {
|
2021-11-13 23:11:03 +00:00
|
|
|
edit(L, "teliva_editbuffer", message);
|
|
|
|
}
|
2021-11-14 16:01:49 +00:00
|
|
|
void editor_refresh_buffer (void) {
|
2021-11-14 17:30:27 +00:00
|
|
|
clearEditor();
|
2021-11-13 23:17:13 +00:00
|
|
|
editorOpen("teliva_editbuffer");
|
|
|
|
}
|
2021-11-14 17:53:17 +00:00
|
|
|
extern void resumeEdit (lua_State *L, char *filename);
|
2021-11-20 18:10:26 +00:00
|
|
|
void editor_resume (lua_State *L) {
|
2021-11-14 17:53:17 +00:00
|
|
|
resumeEdit(L, "teliva_editbuffer");
|
2021-11-14 17:45:47 +00:00
|
|
|
}
|
2021-11-13 22:54:13 +00:00
|
|
|
|
|
|
|
|
2021-11-14 17:45:47 +00:00
|
|
|
int load_editor_buffer_to_current_definition_in_image(lua_State *L) {
|
2021-11-13 22:54:13 +00:00
|
|
|
char new_contents[8192] = {0};
|
|
|
|
read_contents(L, "teliva_editbuffer", new_contents);
|
|
|
|
update_definition(L, Current_definition, new_contents);
|
|
|
|
save_image(L);
|
2021-11-14 17:45:47 +00:00
|
|
|
/* reload binding */
|
|
|
|
return luaL_loadbuffer(L, new_contents, strlen(new_contents), Current_definition)
|
|
|
|
|| docall(L, 0, 1);
|
2021-11-13 22:54:13 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2021-11-14 17:53:17 +00:00
|
|
|
const char *Previous_error = NULL;
|
2021-11-14 16:01:49 +00:00
|
|
|
void edit_image (lua_State *L, const char *definition) {
|
2021-11-14 00:33:59 +00:00
|
|
|
save_to_current_definition_and_editor_buffer(L, definition);
|
2021-11-14 16:01:49 +00:00
|
|
|
edit_buffer(L, /*status message*/ "");
|
2021-11-14 17:45:47 +00:00
|
|
|
// error handling
|
|
|
|
while (1) {
|
|
|
|
int status;
|
|
|
|
status = load_editor_buffer_to_current_definition_in_image(L);
|
|
|
|
if (status == 0 || lua_isnil(L, -1))
|
|
|
|
break;
|
2021-11-14 17:53:17 +00:00
|
|
|
Previous_error = lua_tostring(L, -1);
|
|
|
|
if (Previous_error == NULL) Previous_error = "(error object is not a string)";
|
|
|
|
editor_resume(L);
|
2021-11-14 17:45:47 +00:00
|
|
|
lua_pop(L, 1);
|
|
|
|
}
|
2021-11-13 23:58:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2021-11-14 15:52:47 +00:00
|
|
|
extern void draw_menu_item (const char* key, const char* name);
|
2021-11-14 16:01:49 +00:00
|
|
|
static void browser_menu (void) {
|
2021-11-14 15:52:47 +00:00
|
|
|
attrset(A_REVERSE);
|
|
|
|
for (int x = 0; x < COLS; ++x)
|
|
|
|
mvaddch(LINES-1, x, ' ');
|
|
|
|
attrset(A_NORMAL);
|
|
|
|
extern int menu_column;
|
|
|
|
menu_column = 2;
|
|
|
|
draw_menu_item("Esc", "go back");
|
|
|
|
draw_menu_item("Enter", "submit");
|
2021-11-14 16:10:46 +00:00
|
|
|
draw_menu_item("^u", "clear");
|
2021-11-14 15:52:47 +00:00
|
|
|
attrset(A_NORMAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2021-11-14 07:14:52 +00:00
|
|
|
#define BG(i) (COLOR_PAIR((i)+8))
|
|
|
|
#define FG(i) (COLOR_PAIR(i))
|
2021-11-14 16:01:49 +00:00
|
|
|
void browse_definition (const char *definition_name) {
|
2021-11-14 15:11:30 +00:00
|
|
|
attron(BG(7));
|
|
|
|
addstr(definition_name);
|
|
|
|
attrset(A_NORMAL);
|
|
|
|
addstr(" ");
|
|
|
|
}
|
|
|
|
|
2021-11-14 08:38:00 +00:00
|
|
|
/* return true if submitted */
|
2021-11-14 16:01:49 +00:00
|
|
|
int browse_image (lua_State *L) {
|
2021-11-14 00:33:59 +00:00
|
|
|
clear();
|
|
|
|
luaL_newmetatable(L, "__teliva_call_graph_depth");
|
|
|
|
int cgt = lua_gettop(L);
|
2021-11-14 07:14:52 +00:00
|
|
|
// special-case: we don't instrument the call to main, but it's always 1
|
|
|
|
lua_pushinteger(L, 1);
|
|
|
|
lua_setfield(L, cgt, "main");
|
|
|
|
// segment definitions by depth
|
|
|
|
lua_getglobal(L, "teliva_program");
|
|
|
|
int t = lua_gettop(L);
|
2021-11-14 15:11:30 +00:00
|
|
|
|
2021-11-14 00:33:59 +00:00
|
|
|
int y = 2;
|
2021-11-14 07:14:52 +00:00
|
|
|
mvaddstr(y, 0, "data: ");
|
2021-11-14 15:11:30 +00:00
|
|
|
// first: data (non-functions) that's not the Teliva menu or curses variables
|
|
|
|
for (lua_pushnil(L); lua_next(L, t) != 0;) {
|
|
|
|
const char *definition_name = lua_tostring(L, -2);
|
|
|
|
lua_getglobal(L, definition_name);
|
|
|
|
int is_userdata = lua_isuserdata(L, -1);
|
|
|
|
int is_function = lua_isfunction(L, -1);
|
|
|
|
lua_pop(L, 1);
|
|
|
|
if (strcmp(definition_name, "menu") != 0 // required by all Teliva programs
|
|
|
|
&& !is_function // functions are not data
|
|
|
|
&& !is_userdata // including curses window objects
|
|
|
|
// (unlikely to have an interesting definition)
|
|
|
|
) {
|
2021-11-14 16:01:49 +00:00
|
|
|
browse_definition(definition_name);
|
2021-11-14 15:11:30 +00:00
|
|
|
}
|
|
|
|
lua_pop(L, 1); // value
|
|
|
|
// leave key on stack for next iteration
|
|
|
|
}
|
|
|
|
|
|
|
|
// second: menu and other userdata
|
2021-11-14 07:14:52 +00:00
|
|
|
for (lua_pushnil(L); lua_next(L, t) != 0;) {
|
|
|
|
const char* definition_name = lua_tostring(L, -2);
|
2021-11-14 15:11:30 +00:00
|
|
|
lua_getglobal(L, definition_name);
|
|
|
|
int is_userdata = lua_isuserdata(L, -1);
|
|
|
|
lua_pop(L, 1);
|
|
|
|
if (strcmp(definition_name, "menu") == 0
|
|
|
|
|| is_userdata // including curses window objects
|
|
|
|
) {
|
2021-11-14 16:01:49 +00:00
|
|
|
browse_definition(definition_name);
|
2021-11-14 07:14:52 +00:00
|
|
|
}
|
|
|
|
lua_pop(L, 1); // value
|
|
|
|
// leave key on stack for next iteration
|
|
|
|
}
|
2021-11-14 15:11:30 +00:00
|
|
|
|
2021-11-14 07:14:52 +00:00
|
|
|
// functions by level
|
|
|
|
y += 2;
|
|
|
|
mvprintw(y, 0, "functions: ");
|
|
|
|
y++;
|
|
|
|
for (int level = 1; level < 5; ++level) {
|
|
|
|
mvaddstr(y, 0, " ");
|
|
|
|
for (lua_pushnil(L); lua_next(L, t) != 0;) {
|
|
|
|
const char* definition_name = lua_tostring(L, -2);
|
|
|
|
lua_getfield(L, cgt, definition_name);
|
|
|
|
int depth = lua_tointeger(L, -1);
|
2021-11-14 15:11:30 +00:00
|
|
|
if (depth == level)
|
2021-11-14 16:01:49 +00:00
|
|
|
browse_definition(definition_name);
|
2021-11-14 07:14:52 +00:00
|
|
|
lua_pop(L, 1); // depth of value
|
|
|
|
lua_pop(L, 1); // value
|
|
|
|
// leave key on stack for next iteration
|
|
|
|
}
|
|
|
|
y += 2;
|
2021-11-14 00:33:59 +00:00
|
|
|
}
|
2021-11-14 15:11:30 +00:00
|
|
|
|
|
|
|
// unused functions
|
|
|
|
mvaddstr(y, 0, " ");
|
|
|
|
for (lua_pushnil(L); lua_next(L, t) != 0;) {
|
|
|
|
const char* definition_name = lua_tostring(L, -2);
|
|
|
|
lua_getglobal(L, definition_name);
|
|
|
|
int is_function = lua_isfunction(L, -1);
|
|
|
|
lua_pop(L, 1);
|
|
|
|
lua_getfield(L, cgt, definition_name);
|
|
|
|
if (is_function && lua_isnoneornil(L, -1))
|
2021-11-14 16:01:49 +00:00
|
|
|
browse_definition(definition_name);
|
2021-11-14 15:11:30 +00:00
|
|
|
lua_pop(L, 1); // depth of value
|
|
|
|
lua_pop(L, 1); // value
|
|
|
|
// leave key on stack for next iteration
|
|
|
|
}
|
|
|
|
|
2021-11-14 06:48:59 +00:00
|
|
|
lua_settop(L, 0);
|
2021-11-14 15:52:47 +00:00
|
|
|
|
|
|
|
enum {
|
|
|
|
ENTER = 10,
|
|
|
|
CTRL_U = 21,
|
|
|
|
ESC = 27,
|
|
|
|
};
|
|
|
|
char query[CURRENT_DEFINITION_LEN+1] = {0};
|
|
|
|
int qlen = 0;
|
|
|
|
while (1) {
|
2021-11-14 16:01:49 +00:00
|
|
|
browser_menu();
|
2021-11-14 16:10:46 +00:00
|
|
|
for (int x = 0; x < COLS; ++x)
|
|
|
|
mvaddch(LINES-2, x, ' ');
|
2021-11-14 15:52:47 +00:00
|
|
|
mvprintw(LINES-2, 0, "Edit: %s", query);
|
|
|
|
int c = getch();
|
|
|
|
if (c == KEY_BACKSPACE) {
|
|
|
|
if (qlen != 0) query[--qlen] = '\0';
|
|
|
|
} else if (c == ESC) {
|
|
|
|
return 0;
|
|
|
|
} else if (c == ENTER) {
|
2021-11-14 16:01:49 +00:00
|
|
|
edit_image(L, query);
|
2021-11-14 15:52:47 +00:00
|
|
|
return 1;
|
|
|
|
} else if (c == CTRL_U) {
|
|
|
|
qlen = 0;
|
2021-11-14 16:10:46 +00:00
|
|
|
query[qlen] = '\0';
|
2021-11-14 15:52:47 +00:00
|
|
|
} else if (isprint(c)) {
|
|
|
|
if (qlen < CURRENT_DEFINITION_LEN) {
|
|
|
|
query[qlen++] = c;
|
|
|
|
query[qlen] = '\0';
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* never gets here */
|
2021-11-14 00:33:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2021-11-14 06:45:44 +00:00
|
|
|
extern void cleanup_curses (void);
|
2021-11-12 01:00:18 +00:00
|
|
|
void switch_to_editor (lua_State *L, const char *message) {
|
2021-11-14 07:14:52 +00:00
|
|
|
/* clobber the app's ncurses colors; we'll restart the app when we rerun it. */
|
|
|
|
for (int i = 0; i < 8; ++i)
|
|
|
|
init_pair(i, i, -1);
|
|
|
|
for (int i = 0; i < 8; ++i)
|
|
|
|
init_pair(i+8, -1, i);
|
2021-11-14 19:10:18 +00:00
|
|
|
nodelay(stdscr, 0);
|
2021-11-14 17:47:36 +00:00
|
|
|
if (browse_image(L))
|
2021-11-14 08:38:00 +00:00
|
|
|
cleanup_curses();
|
2021-11-12 00:11:57 +00:00
|
|
|
execv(Argv[0], Argv);
|
|
|
|
/* never returns */
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2021-10-20 04:38:48 +00:00
|
|
|
/* check that argument has no extra characters at the end */
|
|
|
|
#define notail(x) {if ((x)[2] != '\0') return -1;}
|
|
|
|
|
|
|
|
|
|
|
|
static int collectargs (char **argv, int *pi, int *pv, int *pe) {
|
|
|
|
int i;
|
|
|
|
for (i = 1; argv[i] != NULL; i++) {
|
|
|
|
if (argv[i][0] != '-') /* not an option? */
|
|
|
|
return i;
|
|
|
|
switch (argv[i][1]) { /* option */
|
|
|
|
case '-':
|
|
|
|
notail(argv[i]);
|
|
|
|
return (argv[i+1] != NULL ? i+1 : 0);
|
|
|
|
case '\0':
|
|
|
|
return i;
|
|
|
|
case 'i':
|
|
|
|
notail(argv[i]);
|
|
|
|
*pi = 1; /* go through */
|
|
|
|
case 'v':
|
|
|
|
notail(argv[i]);
|
|
|
|
*pv = 1;
|
|
|
|
break;
|
|
|
|
case 'e':
|
|
|
|
*pe = 1; /* go through */
|
|
|
|
case 'l':
|
|
|
|
if (argv[i][2] == '\0') {
|
|
|
|
i++;
|
|
|
|
if (argv[i] == NULL) return -1;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default: return -1; /* invalid option */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int runargs (lua_State *L, char **argv, int n) {
|
|
|
|
int i;
|
|
|
|
for (i = 1; i < n; i++) {
|
|
|
|
if (argv[i] == NULL) continue;
|
|
|
|
lua_assert(argv[i][0] == '-');
|
|
|
|
switch (argv[i][1]) { /* option */
|
|
|
|
case 'e': {
|
|
|
|
const char *chunk = argv[i] + 2;
|
|
|
|
if (*chunk == '\0') chunk = argv[++i];
|
|
|
|
lua_assert(chunk != NULL);
|
|
|
|
if (dostring(L, chunk, "=(command line)") != 0)
|
|
|
|
return 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case 'l': {
|
|
|
|
const char *filename = argv[i] + 2;
|
|
|
|
if (*filename == '\0') filename = argv[++i];
|
|
|
|
lua_assert(filename != NULL);
|
|
|
|
if (dolibrary(L, filename))
|
|
|
|
return 1; /* stop if file fails */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default: break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int handle_luainit (lua_State *L) {
|
|
|
|
const char *init = getenv(LUA_INIT);
|
|
|
|
if (init == NULL) return 0; /* status OK */
|
|
|
|
else if (init[0] == '@')
|
|
|
|
return dofile(L, init+1);
|
|
|
|
else
|
|
|
|
return dostring(L, init, "=" LUA_INIT);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2021-11-21 04:35:37 +00:00
|
|
|
/* roughly equivalent to:
|
|
|
|
* globalname = require(filename) */
|
|
|
|
static int dorequire (lua_State *L, const char *filename, const char *globalname) {
|
|
|
|
int status = luaL_loadfile(L, filename) || docall(L, /*nargs*/0, /*don't clean up stack*/0);
|
|
|
|
if (status != 0) return report(L, status);
|
|
|
|
if (lua_isnil(L, -1)) {
|
|
|
|
endwin();
|
|
|
|
printf("%s didn't return a module\n", filename);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
lua_setglobal(L, globalname);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2021-10-20 04:38:48 +00:00
|
|
|
struct Smain {
|
|
|
|
int argc;
|
|
|
|
char **argv;
|
|
|
|
int status;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
static int pmain (lua_State *L) {
|
|
|
|
struct Smain *s = (struct Smain *)lua_touserdata(L, 1);
|
|
|
|
char **argv = s->argv;
|
2021-11-21 00:16:00 +00:00
|
|
|
int status;
|
2021-11-14 15:59:15 +00:00
|
|
|
int image;
|
2021-10-20 04:38:48 +00:00
|
|
|
int has_i = 0, has_v = 0, has_e = 0;
|
|
|
|
globalL = L;
|
|
|
|
if (argv[0] && argv[0][0]) progname = argv[0];
|
|
|
|
lua_gc(L, LUA_GCSTOP, 0); /* stop collector during initialization */
|
|
|
|
luaL_openlibs(L); /* open libraries */
|
2021-11-21 04:35:37 +00:00
|
|
|
status = dorequire(L, "src/lcurses/curses.lua", "curses");
|
|
|
|
if (status != 0) return 0;
|
2021-11-21 07:34:29 +00:00
|
|
|
status = dorequire(L, "src/luasocket/socket.lua", "socket");
|
|
|
|
if (status != 0) return 0;
|
2021-11-21 22:21:38 +00:00
|
|
|
status = dorequire(L, "src/json.lua", "json");
|
|
|
|
if (status != 0) return 0;
|
2021-10-20 04:38:48 +00:00
|
|
|
lua_gc(L, LUA_GCRESTART, 0);
|
|
|
|
s->status = handle_luainit(L);
|
|
|
|
if (s->status != 0) return 0;
|
2021-11-14 15:59:15 +00:00
|
|
|
image = collectargs(argv, &has_i, &has_v, &has_e);
|
|
|
|
if (image < 0) { /* invalid args? */
|
2021-10-20 04:38:48 +00:00
|
|
|
print_usage();
|
2021-10-23 03:53:18 +00:00
|
|
|
getch();
|
2021-10-20 04:38:48 +00:00
|
|
|
s->status = 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (has_v) print_version();
|
2021-11-14 15:59:15 +00:00
|
|
|
s->status = runargs(L, argv, (image > 0) ? image : s->argc);
|
2021-10-20 04:38:48 +00:00
|
|
|
if (s->status != 0) return 0;
|
2021-11-14 15:59:15 +00:00
|
|
|
if (image)
|
|
|
|
s->status = handle_image(L, argv, image);
|
2021-10-20 04:38:48 +00:00
|
|
|
if (s->status != 0) return 0;
|
|
|
|
if (has_i)
|
|
|
|
dotty(L);
|
2021-11-14 15:59:15 +00:00
|
|
|
else if (image == 0 && !has_e && !has_v) {
|
2021-10-23 03:59:48 +00:00
|
|
|
print_version();
|
|
|
|
dotty(L);
|
2021-10-20 04:38:48 +00:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2021-11-14 05:17:02 +00:00
|
|
|
extern void draw_menu (lua_State *);
|
2021-11-06 01:27:32 +00:00
|
|
|
|
|
|
|
|
2021-10-20 04:38:48 +00:00
|
|
|
int main (int argc, char **argv) {
|
|
|
|
int status;
|
|
|
|
struct Smain s;
|
2021-10-24 16:23:54 +00:00
|
|
|
lua_State *L = luaL_newstate();
|
2021-10-20 04:38:48 +00:00
|
|
|
if (L == NULL) {
|
|
|
|
l_message(argv[0], "cannot create state: not enough memory");
|
|
|
|
return EXIT_FAILURE;
|
|
|
|
}
|
2021-11-07 04:49:23 +00:00
|
|
|
setlocale(LC_ALL, "");
|
2021-10-23 03:53:18 +00:00
|
|
|
initscr();
|
2021-11-10 22:25:45 +00:00
|
|
|
keypad(stdscr, 1);
|
2021-11-06 02:38:43 +00:00
|
|
|
start_color();
|
2021-11-07 16:04:33 +00:00
|
|
|
use_default_colors();
|
2021-11-06 19:44:47 +00:00
|
|
|
draw_menu(L);
|
2021-10-23 03:53:18 +00:00
|
|
|
echo();
|
2021-10-20 04:38:48 +00:00
|
|
|
s.argc = argc;
|
|
|
|
s.argv = argv;
|
2021-11-06 05:28:08 +00:00
|
|
|
Argv = argv;
|
2021-10-20 04:38:48 +00:00
|
|
|
status = lua_cpcall(L, &pmain, &s);
|
|
|
|
report(L, status);
|
|
|
|
lua_close(L);
|
2021-11-14 05:25:52 +00:00
|
|
|
cleanup_curses();
|
2021-10-20 04:38:48 +00:00
|
|
|
return (status || s.status) ? EXIT_FAILURE : EXIT_SUCCESS;
|
|
|
|
}
|
|
|
|
|