diff options
Diffstat (limited to 'jimsh.c')
| -rw-r--r-- | jimsh.c | 28 |
1 files changed, 27 insertions, 1 deletions
@@ -65,15 +65,38 @@ static void JimPrintErrorMessage(Jim_Interp *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(); @@ -84,11 +107,12 @@ int main(int argc, char *const argv[]) JimPrintErrorMessage(interp); } - Jim_SetVariableStrWithStr(interp, "jim::argv0", argv[0]); + 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); } @@ -98,7 +122,9 @@ int main(int argc, char *const argv[]) } } 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) { |