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77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
// This is an open source non-commercial project. Dear PVS-Studio, please check
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// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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static void help(void)
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{
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puts("A simple implementation of a shell for testing termopen().");
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puts("");
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puts("Usage:");
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puts(" shell-test --help");
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puts(" Prints this help to stdout.");
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puts(" shell-test");
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puts(" shell-test EXE");
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puts(" Prints \"ready $ \" to stderr.");
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puts(" shell-test -t {prompt text}");
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puts(" Prints \"{prompt text} $ \" to stderr.");
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puts(" shell-test EXE \"prog args...\"");
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puts(" Prints \"ready $ prog args...\\n\" to stderr.");
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puts(" shell-test -t {prompt text} EXE \"prog args...\"");
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puts(" Prints \"{prompt text} $ progs args...\" to stderr.");
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puts(" shell-test REP {byte} \"line line line\"");
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puts(" Prints \"{lnr}: line line line\\n\" to stdout {byte} times.");
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puts(" I.e. for `shell-test REP ab \"test\"'");
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puts(" 0: test");
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puts(" ...");
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puts(" 96: test");
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puts(" will be printed because byte `a' is equal to 97.");
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}
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int main(int argc, char **argv)
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{
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if (argc == 2 && strcmp(argv[1], "--help") == 0) {
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help();
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}
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if (argc >= 2) {
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if (strcmp(argv[1], "-t") == 0) {
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if (argc < 3) {
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fprintf(stderr,"Missing prompt text for -t option\n");
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return 5;
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} else {
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fprintf(stderr, "%s $ ", argv[2]);
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if (argc >= 5 && (strcmp(argv[3], "EXE") == 0)) {
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fprintf(stderr, "%s\n", argv[4]);
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}
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}
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} else if (strcmp(argv[1], "EXE") == 0) {
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fprintf(stderr, "ready $ ");
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if (argc >= 3) {
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fprintf(stderr, "%s\n", argv[2]);
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}
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} else if (strcmp(argv[1], "REP") == 0) {
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if (argc < 4) {
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fprintf(stderr, "Not enough REP arguments\n");
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return 4;
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}
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uint8_t number = (uint8_t) *argv[2];
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for (uint8_t i = 0; i < number; i++) {
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printf("%d: %s\n", (int) i, argv[3]);
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}
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} else {
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fprintf(stderr, "Unknown first argument\n");
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return 3;
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}
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return 0;
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} else if (argc == 1) {
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fprintf(stderr, "ready $ ");
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return 0;
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} else {
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fprintf(stderr, "Missing first argument\n");
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return 2;
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}
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}
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