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// This is an open source non-commercial project. Dear PVS-Studio, please check
// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#ifdef _MSC_VER
#include <Windows.h>
#define usleep(usecs) Sleep(usecs/1000)
#else
#include <unistd.h>
#endif
static void wait(void)
{
fflush(stdout);
usleep(10*1000);
}
static void help(void)
{
puts("A simple implementation of a shell for testing termopen().");
puts("");
puts("Usage:");
puts(" shell-test --help");
puts(" Prints this help to stdout.");
puts(" shell-test");
puts(" shell-test EXE");
puts(" Prints \"ready $ \" to stderr.");
puts(" shell-test -t {prompt text}");
puts(" Prints \"{prompt text} $ \" to stderr.");
puts(" shell-test EXE \"prog args...\"");
puts(" Prints \"ready $ prog args...\\n\" to stderr.");
puts(" shell-test -t {prompt text} EXE \"prog args...\"");
puts(" Prints \"{prompt text} $ progs args...\" to stderr.");
puts(" shell-test REP {count} \"line line line\"");
puts(" Prints \"{lnr}: line line line\\n\" to stdout {count} times.");
puts(" I.e. for `shell-test REP 97 \"test\"'");
puts(" 0: test");
puts(" ...");
puts(" 96: test");
puts(" shell-test INTERACT");
puts(" Prints \"interact $ \" to stderr, and waits for \"exit\" input.");
}
int main(int argc, char **argv)
{
if (argc == 2 && strcmp(argv[1], "--help") == 0) {
help();
}
if (argc >= 2) {
if (strcmp(argv[1], "-t") == 0) {
if (argc < 3) {
fprintf(stderr,"Missing prompt text for -t option\n");
return 5;
} else {
fprintf(stderr, "%s $ ", argv[2]);
if (argc >= 5 && (strcmp(argv[3], "EXE") == 0)) {
fprintf(stderr, "%s\n", argv[4]);
}
}
} else if (strcmp(argv[1], "EXE") == 0) {
fprintf(stderr, "ready $ ");
if (argc >= 3) {
fprintf(stderr, "%s\n", argv[2]);
}
} else if (strcmp(argv[1], "REP") == 0) {
if (argc < 4) {
fprintf(stderr, "Not enough REP arguments\n");
return 4;
}
int count = 0;
if (sscanf(argv[2], "%d", &count) != 1) {
fprintf(stderr, "Invalid count: %s\n", argv[2]);
return 4;
}
for (uint8_t i = 0; i < count; i++) {
printf("%d: %s\n", (int) i, argv[3]);
}
} else if (strcmp(argv[1], "UTF-8") == 0) {
// test split-up UTF-8 sequence
printf("\xc3"); wait();
printf("\xa5\n"); wait();
// split up a 2+2 grapheme clusters all possible ways
printf("ref: \xc3\xa5\xcc\xb2\n"); wait();
printf("1: \xc3"); wait();
printf("\xa5\xcc\xb2\n"); wait();
printf("2: \xc3\xa5"); wait();
printf("\xcc\xb2\n"); wait();
printf("3: \xc3\xa5\xcc"); wait();
printf("\xb2\n"); wait();
} else if (strcmp(argv[1], "INTERACT") == 0) {
char input[256];
char cmd[100];
int arg;
int input_argc;
while (1) {
fprintf(stderr, "interact $ ");
if (fgets(input, sizeof(input), stdin) == NULL) {
break; // EOF
}
input_argc = sscanf(input, "%99s %d", cmd, &arg);
if(1 == input_argc) {
arg = 0;
}
if (strcmp(cmd, "exit") == 0) {
return arg;
} else {
fprintf(stderr, "command not found: %s\n", cmd);
}
}
} else {
fprintf(stderr, "Unknown first argument: %s\n", argv[1]);
return 3;
}
return 0;
} else if (argc == 1) {
fprintf(stderr, "ready $ ");
return 0;
} else {
fprintf(stderr, "Missing first argument\n");
return 2;
}
}
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