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Diffstat (limited to 'jimsh.c')
| -rw-r--r-- | jimsh.c | 154 |
1 files changed, 154 insertions, 0 deletions
@@ -0,0 +1,154 @@ +/* + * jimsh - An interactive shell for Jim + * + * Copyright 2005 Salvatore Sanfilippo <antirez@invece.org> + * Copyright 2009 Steve Bennett <steveb@workware.net.au> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation + * are those of the authors and should not be interpreted as representing + * official policies, either expressed or implied, of the Jim Tcl Project. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "jim.h" +#include "jimautoconf.h" + +/* From initjimsh.tcl */ +extern int Jim_initjimshInit(Jim_Interp *interp); + +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); + Jim_SetVariableStr(interp, "argc", Jim_NewIntObj(interp, argc)); +} + +static void JimPrintErrorMessage(Jim_Interp *interp) +{ + Jim_MakeErrorMessage(interp); + fprintf(stderr, "%s\n", Jim_String(Jim_GetResult(interp))); +} + +void usage(const char* executable_name) +{ + printf("jimsh version %d.%d\n", JIM_VERSION / 100, JIM_VERSION % 100); + printf("Usage: %s\n", executable_name); + printf("or : %s [options] [filename]\n", executable_name); + printf("\n"); + printf("Without options: Interactive mode\n"); + printf("\n"); + printf("Options:\n"); + printf(" --version : prints the version string\n"); + printf(" --help : prints this text\n"); + printf(" -e CMD : executes command CMD\n"); + printf(" NOTE: all subsequent options will be passed as arguments to the command\n"); + printf(" [filename] : executes the script contained in the named file\n"); + printf(" NOTE: all subsequent options will be passed to the script\n\n"); +} + +int main(int argc, char *const argv[]) +{ + int retcode; + Jim_Interp *interp; + char *const orig_argv0 = argv[0]; + + /* Parse initial arguments before interpreter is started */ + if (argc > 1 && strcmp(argv[1], "--version") == 0) { + printf("%d.%d\n", JIM_VERSION / 100, JIM_VERSION % 100); + return 0; + } + else if (argc > 1 && strcmp(argv[1], "--help") == 0) { + usage(argv[0]); + return 0; + } + + /* Create and initialize the interpreter */ + interp = Jim_CreateInterp(); + Jim_RegisterCoreCommands(interp); + + /* Register static extensions */ + if (Jim_InitStaticExtensions(interp) != JIM_OK) { + JimPrintErrorMessage(interp); + } + + Jim_SetVariableStrWithStr(interp, "jim::argv0", orig_argv0); + Jim_SetVariableStrWithStr(interp, JIM_INTERACTIVE, argc == 1 ? "1" : "0"); + retcode = Jim_initjimshInit(interp); + + if (argc == 1) { + /* Executable name is the only argument - start interactive prompt */ + if (retcode == JIM_ERR) { + JimPrintErrorMessage(interp); + } + if (retcode != JIM_EXIT) { + JimSetArgv(interp, 0, NULL); + retcode = Jim_InteractivePrompt(interp); + } + } + else { + /* Additional arguments - interpret them */ + if (argc > 2 && strcmp(argv[1], "-e") == 0) { + /* Evaluate code in subsequent argument */ + JimSetArgv(interp, argc - 3, argv + 3); + retcode = Jim_Eval(interp, argv[2]); + if (retcode != JIM_ERR) { + printf("%s\n", Jim_String(Jim_GetResult(interp))); + } + } + 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) { + JimPrintErrorMessage(interp); + } + } + if (retcode == JIM_EXIT) { + retcode = Jim_GetExitCode(interp); + } + else if (retcode == JIM_ERR) { + retcode = 1; + } + else { + retcode = 0; + } + Jim_FreeInterp(interp); + return retcode; +} |