Add SDL_Process subsystem

2026-03-20 15:51:07 +01:00 · 2024-08-29 13:06:25 -04:00
parent 6c83491116
commit 9eea8234e6
30 changed files with 2414 additions and 1 deletions
--- a/test/childprocess.c
+++ b/test/childprocess.c
@@ -0,0 +1,149 @@
+#include <SDL3/SDL.h>
+#include <SDL3/SDL_main.h>
+#include <SDL3/SDL_test.h>
+
+#include <stdio.h>
+#include <errno.h>
+
+#if defined(SDL_PLATFORM_WINDOWS)
+#include <windows.h>
+#elif defined(SDL_PLATFORM_MACOS)
+#include <crt_externs.h>
+#define environ (*_NSGetEnviron())
+#else
+extern char **environ;
+#endif
+
+int main(int argc, char *argv[]) {
+    SDLTest_CommonState *state;
+    int i;
+    const char *expect_environment = NULL;
+    SDL_bool expect_environment_match = SDL_FALSE;
+    SDL_bool print_arguments = SDL_FALSE;
+    SDL_bool print_environment = SDL_FALSE;
+    SDL_bool stdin_to_stdout = SDL_FALSE;
+    SDL_bool stdin_to_stderr = SDL_FALSE;
+    int exit_code = 0;
+
+    state = SDLTest_CommonCreateState(argv, 0);
+
+    for (i = 1; i < argc;) {
+        int consumed = SDLTest_CommonArg(state, i);
+        if (SDL_strcmp(argv[i], "--print-arguments") == 0) {
+            print_arguments = SDL_TRUE;
+            consumed = 1;
+        } else if (SDL_strcmp(argv[i], "--print-environment") == 0) {
+            print_environment = SDL_TRUE;
+            consumed = 1;
+        } else if (SDL_strcmp(argv[i], "--expect-env") == 0) {
+            if (i + 1 < argc) {
+                expect_environment = argv[i + 1];
+                consumed = 2;
+            }
+        } else if (SDL_strcmp(argv[i], "--stdin-to-stdout") == 0) {
+            stdin_to_stdout = SDL_TRUE;
+            consumed = 1;
+        } else if (SDL_strcmp(argv[i], "--stdin-to-stderr") == 0) {
+            stdin_to_stderr = SDL_TRUE;
+            consumed = 1;
+        } else if (SDL_strcmp(argv[i], "--stdout") == 0) {
+            if (i + 1 < argc) {
+                fprintf(stdout, "%s", argv[i + 1]);
+                consumed = 2;
+            }
+        } else if (SDL_strcmp(argv[i], "--stderr") == 0) {
+            if (i + 1 < argc) {
+                fprintf(stderr, "%s", argv[i + 1]);
+                consumed = 2;
+            }
+        } else if (SDL_strcmp(argv[i], "--exit-code") == 0) {
+            if (i + 1 < argc) {
+                char *endptr = NULL;
+                exit_code = SDL_strtol(argv[i + 1], &endptr, 0);
+                if (endptr && *endptr == '\0') {
+                    consumed = 2;
+                }
+            }
+        } else if (SDL_strcmp(argv[i], "--") == 0) {
+            i++;
+            break;
+        }
+        if (consumed <= 0) {
+            const char *args[] = {
+                "[--print-arguments]",
+                "[--print-environment]",
+                "[--expect-env KEY=VAL]",
+                "[--stdin-to-stdout]",
+                "[--stdout TEXT]",
+                "[--stdin-to-stderr]",
+                "[--stderr TEXT]",
+                "[--exit-code EXIT_CODE]",
+                "[--] [ARG [ARG ...]]",
+                NULL
+            };
+            SDLTest_CommonLogUsage(state, argv[0], args);
+            return 1;
+        }
+        i += consumed;
+    }
+
+    if (print_arguments) {
+        int print_i;
+        for (print_i = 0; i + print_i < argc; print_i++) {
+            fprintf(stdout, "|%d=%s|\r\n", print_i, argv[i + print_i]);
+        }
+    }
+
+    if (print_environment || expect_environment) {
+
+#if defined(SDL_PLATFORM_WINDOWS)
+        char *original_env = GetEnvironmentStrings();
+        const char *env = original_env;
+        for (; env[0]; env += SDL_strlen(env) + 1) {
+#else
+        char **envp = environ;
+        for (; *envp; envp++) {
+            const char *env = *envp;
+#endif
+            if (print_environment) {
+                fprintf(stdout, "%s\n", env);
+            }
+            if (expect_environment) {
+                expect_environment_match |= SDL_strcmp(env, expect_environment) == 0;
+            }
+        }
+#ifdef SDL_PLATFORM_WINDOWS
+        FreeEnvironmentStringsA(original_env);
+#endif
+    }
+
+    if (stdin_to_stdout || stdin_to_stderr) {
+
+        for (;;) {
+            int c;
+            c = fgetc(stdin);
+            if (c == EOF) {
+                if (errno == EAGAIN) {
+                    clearerr(stdin);
+                    SDL_Delay(10);
+                    continue;
+                }
+                break;
+            }
+            if (stdin_to_stdout) {
+                fputc(c, stdout);
+                fflush(stdout);
+            }
+            if (stdin_to_stderr) {
+                fputc(c, stderr);
+            }
+        }
+    }
+
+    SDLTest_CommonDestroyState(state);
+
+    if (expect_environment && !expect_environment_match) {
+        exit_code |= 0x1;
+    }
+    return exit_code;
+}