/**
* Checks one or more of the standard script search locations to locate the
* specified file. If found, returns the discovered path to the script on
* the top of the Lua stack.
*/
int premake_test_file(lua_State* L, const char* filename, int searchMask)
{
if (searchMask & TEST_LOCAL) {
if (do_isfile(filename)) {
lua_pushcfunction(L, path_getabsolute);
lua_pushstring(L, filename);
lua_call(L, 1, 1);
return OKAY;
}
}
if (scripts_path && (searchMask & TEST_SCRIPTS)) {
if (do_locate(L, filename, scripts_path)) return OKAY;
}
if (searchMask & TEST_PATH) {
const char* path = getenv("PREMAKE_PATH");
if (path && do_locate(L, filename, path)) return OKAY;
}
#if !defined(PREMAKE_NO_BUILTIN_SCRIPTS)
if ((searchMask & TEST_EMBEDDED) != 0) {
/* Try to locate a record matching the filename */
if (premake_find_embedded_script(filename) != NULL) {
lua_pushstring(L, "$/");
lua_pushstring(L, filename);
lua_concat(L, 2);
return OKAY;
}
}
#endif
return !OKAY;
}
int os_locate(lua_State* L)
{
const char* path;
int i;
int nArgs = lua_gettop(L);
/* Fetch premake.path */
lua_getglobal(L, "premake");
lua_getfield(L, -1, "path");
path = lua_tostring(L, -1);
for (i = 1; i <= nArgs; ++i) {
const char* name = lua_tostring(L, i);
/* Direct path to file? Return as absolute path */
if (do_isfile(name)) {
lua_pushcfunction(L, path_getabsolute);
lua_pushvalue(L, i);
lua_call(L, 1, 1);
return 1;
}
/* do_locate(arg[i], premake.path) */
if (do_locate(L, name, path)) {
return 1;
}
/* embedded in the executable? */
if (premake_find_embedded_script(name)) {
lua_pushstring(L, "$/");
lua_pushvalue(L, i);
lua_concat(L, 2);
return 1;
}
}
return 0;
}
/**
* Checks one or more of the standard script search locations to locate the
* specified file. If found, returns the discovered path to the script on
* the top of the Lua stack.
*/
int premake_test_file(lua_State* L, const char* filename, int searchMask)
{
int i;
if (searchMask & TEST_LOCAL) {
if (do_isfile(filename)) {
lua_pushcfunction(L, path_getabsolute);
lua_pushstring(L, filename);
lua_call(L, 1, 1);
return OKAY;
}
}
if (scripts_path && (searchMask & TEST_SCRIPTS)) {
if (do_locate(L, filename, scripts_path)) return OKAY;
}
if (searchMask & TEST_PATH) {
const char* path = getenv("PREMAKE_PATH");
if (path && do_locate(L, filename, path)) return OKAY;
}
if ((searchMask & TEST_EMBEDDED) != 0) {
/* Try to locate a record matching the filename */
for (i = 0; builtin_scripts_index[i] != NULL; ++i) {
if (strcmp(builtin_scripts_index[i], filename) == 0) {
lua_pushstring(L, "$/");
lua_pushstring(L, filename);
lua_concat(L, 2);
return OKAY;
}
}
}
return !OKAY;
}
int os_pathsearch(lua_State* L)
{
int i;
for (i = 2; i <= lua_gettop(L); ++i)
{
const char* path;
if (lua_isnil(L, i))
continue;
path = luaL_checkstring(L, i);
do
{
const char* split;
/* look for the closest path separator ; or : */
/* can't use : on windows because it breaks on C:\path */
const char* semi = strchr(path, ';');
#if !defined(PLATFORM_WINDOWS)
const char* full = strchr(path, ':');
#else
const char* full = NULL;
#endif
if (!semi)
{
split = full;
}
else if (!full)
{
split = semi;
}
else
{
split = (semi < full) ? semi : full;
}
/* push this piece of the full search string onto the stack */
if (split)
{
lua_pushlstring(L, path, split - path);
}
else
{
lua_pushstring(L, path);
}
/* keep an extra copy around, so I can return it if I have a match */
lua_pushvalue(L, -1);
/* append the filename to make the full test path */
lua_pushstring(L, "/");
lua_pushvalue(L, 1);
lua_concat(L, 3);
/* test it - if it exists return the path */
if (do_isfile(lua_tostring(L, -1)))
{
lua_pop(L, 1);
return 1;
}
/* no match, set up the next try */
lua_pop(L, 2);
path = (split) ? split + 1 : NULL;
}
while (path);
}
return 0;
}
int os_locate(lua_State* L)
{
int i, nArgs, vars;
const char* premake_path = getenv("PREMAKE_PATH");
nArgs = lua_gettop(L);
/* see if the global environment variables have been set yet */
lua_getglobal(L, "_USER_HOME_DIR");
vars = !lua_isnil(L, -1);
lua_pop(L, 1);
for (i = 1; i <= nArgs; ++i) {
/* Direct path to file? Return fully qualified version */
if (do_isfile(lua_tostring(L, i))) {
lua_pushcfunction(L, path_getabsolute);
lua_pushvalue(L, i);
lua_call(L, 1, 1);
return 1;
}
/* Search for it... */
lua_pushcfunction(L, os_pathsearch);
lua_pushvalue(L, i);
/* ...relative to the main project script */
if (vars) {
lua_getglobal(L, "_MAIN_SCRIPT_DIR");
}
/* ...relative to the CWD */
lua_pushstring(L, ".");
/* ...on the paths specified by --scripts, if set */
if (scripts_path) {
lua_pushstring(L, scripts_path);
}
/* ... relative to ~/.premake */
if (vars) {
lua_getglobal(L, "_USER_HOME_DIR");
lua_pushstring(L, "/.premake");
lua_concat(L, 2);
}
/* ...on the PREMAKE_PATH environment variable, if set */
if (premake_path) {
lua_pushstring(L, premake_path);
}
/* ...relative to the Premake executable */
if (vars) {
lua_getglobal(L, "_PREMAKE_DIR");
}
/* ...in ~/Library/Application Support/Premake (for OS X) */
if (vars) {
lua_getglobal(L, "_USER_HOME_DIR");
lua_pushstring(L, "/Library/Application Support/Premake");
lua_concat(L, 2);
}
/* ...in the expected Unix-y places */
lua_pushstring(L, "/usr/local/share/premake");
lua_pushstring(L, "/usr/share/premake");
lua_call(L, lua_gettop(L) - nArgs - 1, 1);
if (!lua_isnil(L, -1)) {
lua_pushcfunction(L, path_join);
lua_pushvalue(L, -2);
lua_pushvalue(L, i);
lua_call(L, 2, 1);
return 1;
}
lua_pop(L, 1);
}
return 0;
}
