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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 path[JIM_PATH_LEN+1];
/* Check if the executable was called with an absolute pathname */
if (argv0[0] == '/') {
char *p;
strncpy(path, argv0, JIM_PATH_LEN);
p = strrchr(path, '/');
*(p+1) = '\0';
return Jim_NewStringObj(interp, path, -1);
} else {
char cwd[JIM_PATH_LEN+1];
char base[JIM_PATH_LEN+1], *p;
int l;
strncpy(base, argv0, JIM_PATH_LEN);
if (getcwd(cwd, JIM_PATH_LEN) == NULL) {
return Jim_NewStringObj(interp, "/usr/local/lib/jim/", -1);
}
l = strlen(cwd);
if (l > 0 && cwd[l-1] == '/')
cwd[l-1] = '\0';
p = strrchr(base, '/');
if (p == NULL)
base[0] = '\0';
else if (p != base)
*p = '\0';
sprintf(path, "%s/%s", cwd, base);
l = strlen(path);
if (l > 2 && path[l-2] == '/' && path[l-1] == '.')
path[l-1] = '\0';
return Jim_NewStringObj(interp, path, -1);
}
}
#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;
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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