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/* Jimsh - An interactive shell for Jim
* Copyright 2005 Salvatore Sanfilippo <antirez@invece.org>
* Copyright 2009 Steve Bennett <steveb@workware.net.au>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* A copy of the license is also included in the source distribution
* of Jim, as a TXT file name called LICENSE.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "jim.h"
/* JimGetExePath try to get the absolute path of the directory
* of the jim binary, in order to add this path to the library path.
* Likely shipped libraries are in the same path too. */
#ifndef JIM_ANSIC
/* A bit complex on POSIX */
#include <unistd.h>
static Jim_Obj *JimGetExePath(Jim_Interp *interp, const char *argv0)
{
char *p;
/* Check if the executable was called with an absolute pathname */
if (argv0[0] == '/') {
p = strrchr(argv0, '/');
return Jim_NewStringObj(interp, argv0, (p == argv0) ? 1 : p - argv0);
}
else {
int l;
char *path = Jim_Alloc(JIM_PATH_LEN + 1);
if (getcwd(path, JIM_PATH_LEN) == NULL) {
default_path:
Jim_Free(path);
return Jim_NewStringObj(interp, "/usr/local/lib/jim/", -1);
}
/* Need to add the directory component of argv0 to pwd (path) */
/* Strip any leading "./" off argv0 for cleanliness */
while (argv0[0] == '.' && argv0[1] == '/') {
argv0 += 2;
}
l = strlen(path);
/* Strip the last component from argv0 */
p = strrchr(argv0, '/');
if (p) {
int argv0len = p - argv0;
/* Need a trailing / on pwd */
if (l > 0 && path[l - 1] != '/')
path[l++] = '/';
/* And append it to 'path' */
if (l + argv0len > JIM_PATH_LEN) {
/* It won't fit. Don't both trying to realloc. */
goto default_path;
}
memcpy(path + l, argv0, argv0len);
l += argv0len;
path[l] = '\0';
}
return Jim_NewStringObjNoAlloc(interp, path, l);
}
}
#else /* JIM_ANSIC */
/* ... and impossible with just ANSI C */
static Jim_Obj *JimGetExePath(Jim_Interp *interp, const char *argv0)
{
JIM_NOTUSED(argv0);
return Jim_NewStringObj(interp, "/usr/local/lib/jim/", -1);
}
#endif /* JIM_ANSIC */
static void JimLoadJimRc(Jim_Interp *interp)
{
const char *home;
/* XXX: Move off stack */
char buf[JIM_PATH_LEN + 1];
const char *names[] = { ".jimrc", "jimrc.tcl", NULL };
int i;
FILE *fp;
if ((home = getenv("HOME")) == NULL)
return;
for (i = 0; names[i] != NULL; i++) {
if (strlen(home) + strlen(names[i]) + 1 > JIM_PATH_LEN)
continue;
sprintf(buf, "%s/%s", home, names[i]);
if ((fp = fopen(buf, "r")) != NULL) {
fclose(fp);
if (Jim_EvalFile(interp, buf) != JIM_OK) {
Jim_PrintErrorMessage(interp);
}
return;
}
}
}
static void JimSetArgv(Jim_Interp *interp, int argc, char *const argv[])
{
int n;
Jim_Obj *listObj = Jim_NewListObj(interp, NULL, 0);
/* Populate argv global var */
for (n = 0; n < argc; n++) {
Jim_Obj *obj = Jim_NewStringObj(interp, argv[n], -1);
Jim_ListAppendElement(interp, listObj, obj);
}
Jim_SetVariableStr(interp, "argv", listObj);
}
int main(int argc, char *const argv[])
{
int retcode;
Jim_Interp *interp;
Jim_Obj *listObj;
/* Create and initialize the interpreter */
interp = Jim_CreateInterp();
Jim_RegisterCoreCommands(interp);
/* Register static extensions */
if (Jim_InitStaticExtensions(interp) != JIM_OK) {
Jim_PrintErrorMessage(interp);
}
/* Append the path where the executed Jim binary is contained
* in the jim_libpath list. */
listObj = Jim_GetVariableStr(interp, JIM_LIBPATH, JIM_NONE);
if (Jim_IsShared(listObj))
listObj = Jim_DuplicateObj(interp, listObj);
Jim_ListAppendElement(interp, listObj, JimGetExePath(interp, argv[0]));
Jim_SetVariableStr(interp, JIM_LIBPATH, listObj);
Jim_SetVariableStrWithStr(interp, "jim_argv0", argv[0]);
if (argc == 1) {
Jim_SetVariableStrWithStr(interp, JIM_INTERACTIVE, "1");
JimSetArgv(interp, 0, NULL);
JimLoadJimRc(interp);
retcode = Jim_InteractivePrompt(interp);
}
else {
Jim_SetVariableStrWithStr(interp, JIM_INTERACTIVE, "0");
if (argc > 2 && strcmp(argv[1], "-e") == 0) {
JimSetArgv(interp, argc - 3, argv + 3);
retcode = Jim_Eval(interp, argv[2]);
}
else {
Jim_SetVariableStr(interp, "argv0", Jim_NewStringObj(interp, argv[1], -1));
JimSetArgv(interp, argc - 2, argv + 2);
retcode = Jim_EvalFile(interp, argv[1]);
}
if (retcode == JIM_ERR) {
Jim_PrintErrorMessage(interp);
}
}
if (retcode == JIM_OK) {
retcode = 0;
}
else if (retcode == JIM_EXIT) {
retcode = interp->exitCode;
}
else {
retcode = 1;
}
Jim_FreeInterp(interp);
return retcode;
}
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