statusbar: display number of marked files - ranger - mirror of ranger

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author	hut <hut@lavabit.com>	2010-02-12 20:33:33 +0100
committer	hut <hut@lavabit.com>	2010-02-12 20:35:07 +0100
commit	336cc468e37cb41ce9c1838c7d93138cf48e0916 (patch)
tree	5031ef96a79acbb24bad0e823c678438646e4af8 /doc
parent	1cb6afa91181b95464b3b30d6a603c1554c0309d (diff)
download	ranger-336cc468e37cb41ce9c1838c7d93138cf48e0916.tar.gz

statusbar: display number of marked files

Diffstat (limited to 'doc')

0 files changed, 0 insertions, 0 deletions

/* ** $Id: ldblib.c,v 1.104.1.4 2009/08/04 18:50:18 roberto Exp $ ** Interface from Lua to its debug API ** See Copyright Notice in lua.h */ #include <stdio.h> #include <stdlib.h> #include <string.h> #define ldblib_c #define LUA_LIB #include "lua.h" #include "lauxlib.h" #include "lualib.h" static int db_getregistry (lua_State *L) { lua_pushvalue(L, LUA_REGISTRYINDEX); return 1; } static int db_getmetatable (lua_State *L) { luaL_checkany(L, 1); if (!lua_getmetatable(L, 1)) { lua_pushnil(L); /* no metatable */ } return 1; } static int db_setmetatable (lua_State *L) { int t = lua_type(L, 2); luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table expected"); lua_settop(L, 2); lua_pushboolean(L, lua_setmetatable(L, 1)); return 1; } static int db_getfenv (lua_State *L) { luaL_checkany(L, 1); lua_getfenv(L, 1); return 1; } static int db_setfenv (lua_State *L) { luaL_checktype(L, 2, LUA_TTABLE); lua_settop(L, 2); if (lua_setfenv(L, 1) == 0) luaL_error(L, LUA_QL("setfenv") " cannot change environment of given object"); return 1; } static void settabss (lua_State *L, const char *i, const char *v) { lua_pushstring(L, v); lua_setfield(L, -2, i); } static void settabsi (lua_State *L, const char *i, int v) { lua_pushinteger(L, v); lua_setfield(L, -2, i); } static lua_State *getthread (lua_State *L, int *arg) { if (lua_isthread(L, 1)) { *arg = 1; return lua_tothread(L, 1); } else { *arg = 0; return L; } } static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) { if (L == L1) { lua_pushvalue(L, -2); lua_remove(L, -3); } else lua_xmove(L1, L, 1); lua_setfield(L, -2, fname); } static int db_getinfo (lua_State *L) { lua_Debug ar; int arg; lua_State *L1 = getthread(L, &arg); const char *options = luaL_optstring(L, arg+2, "flnSu"); if (lua_isnumber(L, arg+1)) { if (!lua_getstack(L1, (int)lua_tointeger(L, arg+1), &ar)) { lua_pushnil(L); /* level out of range */ return 1; } } else if (lua_isfunction(L, arg+1)) { lua_pushfstring(L, ">%s", options); options = lua_tostring(L, -1); lua_pushvalue(L, arg+1); lua_xmove(L, L1, 1); } else return luaL_argerror(L, arg+1, "function or level expected"); if (!lua_getinfo(L1, options, &ar)) return luaL_argerror(L, arg+2, "invalid option"); lua_createtable(L, 0, 2); if (strchr(options, 'S')) { settabss(L, "source", ar.source); settabss(L, "short_src", ar.short_src); settabsi(L, "linedefined", ar.linedefined); settabsi(L, "lastlinedefined", ar.lastlinedefined); settabss(L, "what", ar.what); } if (strchr(options, 'l')) settabsi(L, "currentline", ar.currentline); if (strchr(options, 'u')) settabsi(L, "nups", ar.nups); if (strchr(options, 'n')) { settabss(L, "name", ar.name); settabss(L, "namewhat", ar.namewhat); } if (strchr(options, 'L')) treatstackoption(L, L1, "activelines"); if (strchr(options, 'f')) treatstackoption(L, L1, "func"); return 1; /* return table */ } static int db_getlocal (lua_State *L) { int arg; lua_State *L1 = getthread(L, &arg); lua_Debug ar; const char *name; if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar)) /* out of range? */ return luaL_argerror(L, arg+1, "level out of range"); name = lua_getlocal(L1, &ar, luaL_checkint(L, arg+2)); if (name) { lua_xmove(L1, L, 1); lua_pushstring(L, name); lua_pushvalue(L, -2); return 2; } else { lua_pushnil(L); return 1; } } static int db_setlocal (lua_State *L) { int arg; lua_State *L1 = getthread(L, &arg); lua_Debug ar; if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar)) /* out of range? */ return luaL_argerror(L, arg+1, "level out of range"); luaL_checkany(L, arg+3); lua_settop(L, arg+3); lua_xmove(L, L1, 1); lua_pushstring(L, lua_setlocal(L1, &ar, luaL_checkint(L, arg+2))); return 1; } static int auxupvalue (lua_State *L, int get) { const char *name; int n = luaL_checkint(L, 2); luaL_checktype(L, 1, LUA_TFUNCTION); if (lua_iscfunction(L, 1)) return 0; /* cannot touch C upvalues from Lua */ name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n); if (name == NULL) return 0; lua_pushstring(L, name); lua_insert(L, -(get+1)); return get + 1; } static int db_getupvalue (lua_State *L) { return auxupvalue(L, 1); } static int db_setupvalue (lua_State *L) { luaL_checkany(L, 3); return auxupvalue(L, 0); } static const char KEY_HOOK = 'h'; static void hookf (lua_State *L, lua_Debug *ar) { static const char *const hooknames[] = {"call", "return", "line", "count", "tail return"}; lua_pushlightuserdata(L, (void *)&KEY_HOOK); lua_rawget(L, LUA_REGISTRYINDEX); lua_pushlightuserdata(L, L); lua_rawget(L, -2); if (lua_isfunction(L, -1)) { lua_pushstring(L, hooknames[(int)ar->event]); if (ar->currentline >= 0) lua_pushinteger(L, ar->currentline); else lua_pushnil(L); lua_assert(lua_getinfo(L, "lS", ar)); lua_call(L, 2, 0); } } static int makemask (const char *smask, int count) { int mask = 0; if (strchr(smask, 'c')) mask |= LUA_MASKCALL; if (strchr(smask, 'r')) mask |= LUA_MASKRET; if (strchr(smask, 'l')) mask |= LUA_MASKLINE; if (count > 0) mask |= LUA_MASKCOUNT; return mask; } static char *unmakemask (int mask, char *smask) { int i = 0; if (mask & LUA_MASKCALL) smask[i++] = 'c'; if (mask & LUA_MASKRET) smask[i++] = 'r'; if (mask & LUA_MASKLINE) smask[i++] = 'l'; smask[i] = '\0'; return smask; } static void gethooktable (lua_State *L) { lua_pushlightuserdata(L, (void *)&KEY_HOOK); lua_rawget(L, LUA_REGISTRYINDEX); if (!lua_istable(L, -1)) { lua_pop(L, 1); lua_createtable(L, 0, 1); lua_pushlightuserdata(L, (void *)&KEY_HOOK); lua_pushvalue(L, -2); lua_rawset(L, LUA_REGISTRYINDEX); } } static int db_sethook (lua_State *L) { int arg, mask, count; lua_Hook func; lua_State *L1 = getthread(L, &arg); if (lua_isnoneornil(L, arg+1)) { lua_settop(L, arg+1); func = NULL; mask = 0; count = 0; /* turn off hooks */ } else { const char *smask = luaL_checkstring(L, arg+2); luaL_checktype(L, arg+1, LUA_TFUNCTION); count = luaL_optint(L, arg+3, 0); func = hookf; mask = makemask(smask, count); } gethooktable(L); lua_pushlightuserdata(L, L1); lua_pushvalue(L, arg+1); lua_rawset(L, -3); /* set new hook */ lua_pop(L, 1); /* remove hook table */ lua_sethook(L1, func, mask, count); /* set hooks */ return 0; } static int db_gethook (lua_State *L) { int arg; lua_State *L1 = getthread(L, &arg); char buff[5]; int mask = lua_gethookmask(L1); lua_Hook hook = lua_gethook(L1); if (hook != NULL && hook != hookf) /* external hook? */ lua_pushliteral(L, "external hook"); else { gethooktable(L); lua_pushlightuserdata(L, L1); lua_rawget(L, -2); /* get hook */ lua_remove(L, -2); /* remove hook table */ } lua_pushstring(L, unmakemask(mask, buff)); lua_pushinteger(L, lua_gethookcount(L1)); return 3; } static int db_debug (lua_State *L) { for (;;) { char buffer[250]; fputs("lua_debug> ", stderr); if (fgets(buffer, sizeof(buffer), stdin) == 0 || strcmp(buffer, "cont\n") == 0) return 0; if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") || lua_pcall(L, 0, 0, 0)) { fputs(lua_tostring(L, -1), stderr); fputs("\n", stderr); } lua_settop(L, 0); /* remove eventual returns */ } } #define LEVELS1 12 /* size of the first part of the stack */ #define LEVELS2 10 /* size of the second part of the stack */ static int db_errorfb (lua_State *L) { int level; int firstpart = 1; /* still before eventual `...' */ int arg; lua_State *L1 = getthread(L, &arg); lua_Debug ar; if (lua_isnumber(L, arg+2)) { level = (int)lua_tointeger(L, arg+2); lua_pop(L, 1); } else level = (L == L1) ? 1 : 0; /* level 0 may be this own function */ if (lua_gettop(L) == arg) lua_pushliteral(L, ""); else if (!lua_isstring(L, arg+1)) return 1; /* message is not a string */ else lua_pushliteral(L, "\n"); lua_pushliteral(L, "stack traceback:"); while (lua_getstack(L1, level++, &ar)) { if (level > LEVELS1 && firstpart) { /* no more than `LEVELS2' more levels? */ if (!lua_getstack(L1, level+LEVELS2, &ar)) level--; /* keep going */ else { lua_pushliteral(L, "\n\t..."); /* too many levels */ while (lua_getstack(L1, level+LEVELS2, &ar)) /* find last levels */ level++; } firstpart = 0; continue; } lua_pushliteral(L, "\n\t"); lua_getinfo(L1, "Snl", &ar); lua_pushfstring(L, "%s:", ar.short_src); if (ar.currentline > 0) lua_pushfstring(L, "%d:", ar.currentline); if (*ar.namewhat != '\0') /* is there a name? */ lua_pushfstring(L, " in function " LUA_QS, ar.name); else { if (*ar.what == 'm') /* main? */ lua_pushfstring(L, " in main chunk"); else if (*ar.what == 'C' || *ar.what == 't') lua_pushliteral(L, " ?"); /* C function or tail call */ else lua_pushfstring(L, " in function <%s:%d>", ar.short_src, ar.linedefined); } lua_concat(L, lua_gettop(L) - arg); } lua_concat(L, lua_gettop(L) - arg); return 1; } static const luaL_Reg dblib[] = { {"debug", db_debug}, {"getfenv", db_getfenv}, {"gethook", db_gethook}, {"getinfo", db_getinfo}, {"getlocal", db_getlocal}, {"getregistry", db_getregistry}, {"getmetatable", db_getmetatable}, {"getupvalue", db_getupvalue}, {"setfenv", db_setfenv}, {"sethook", db_sethook}, {"setlocal", db_setlocal}, {"setmetatable", db_setmetatable}, {"setupvalue", db_setupvalue}, {"traceback", db_errorfb}, {NULL, NULL} }; LUALIB_API int luaopen_debug (lua_State *L) { luaL_register(L, LUA_DBLIBNAME, dblib); return 1; }


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