Initial CST-Agent: portable Linux/Termux/Windows coding agent.

Vendored sashidown, OpenAI-compatible env (OPENAI_*), and bootstrap scripts. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-09-07 22:42:32 +08:00
commit 1f1fcba7ad
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+#ifndef CST_OS_COMPAT_H
+#define CST_OS_COMPAT_H
+
+#include <stddef.h>
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef OS_PATH_MAX
+#define OS_PATH_MAX 4096
+#endif
+
+/* --- path --- */
+int os_path_is_abs(const char *p);
+/* Join with native separator; out always uses '/' on Unix and '\\' on Win for
+ * the joiner, but os_path_norm_slashes converts to '/' for comparisons. */
+int os_path_join(char *out, size_t out_sz, const char *a, const char *b);
+void os_path_norm_slashes(char *p);
+int os_realpath(const char *path, char *out, size_t out_sz);
+/* True if path is under root (after realpath/norm). Trailing slash rules apply. */
+int os_path_under(const char *root, const char *path);
+
+/* --- dirs / config --- */
+int os_mkdir(const char *path, int mode);
+int os_config_dir(char *out, size_t out_sz);
+int os_temp_dir(char *out, size_t out_sz);
+/* Create unique temp file; writes path into out; returns fd or -1. Caller closes. */
+int os_mkstemp(char *out, size_t out_sz, const char *prefix);
+
+/* Directory containing the running executable (for bundled busybox).
+ * Call os_set_prog_path(argv[0]) early on Unix/Termux as fallback. */
+void os_set_prog_path(const char *argv0);
+int os_exe_dir(char *out, size_t out_sz);
+
+/* Resolve shell interpreter path into out.
+ * Order: CST_SHELL → <exe_dir>/busybox[.exe] → /bin/sh (Unix). */
+int os_resolve_shell(char *out, size_t out_sz);
+
+/* --- process --- */
+typedef struct {
+  char *out;
+  size_t out_len;
+  int exit_code;
+} os_run_result_t;
+
+void os_run_result_free(os_run_result_t *r);
+
+/* Run argv[0..] (NULL-terminated) with cwd; capture stdout+stderr.
+ * max_out caps captured bytes (0 = default 512KiB). */
+int os_run_capture(const char *cwd, const char *const argv[], size_t max_out,
+                   os_run_result_t *r);
+
+/* Convenience: shell -c cmd via os_resolve_shell. */
+int os_run_shell_c(const char *cwd, const char *cmd, size_t max_out,
+                   os_run_result_t *r);
+
+/* --- misc --- */
+void os_localtime(const time_t *t, struct tm *out);
+int os_getpid(void);
+int os_chmod_private(const char *path); /* best-effort 0600; no-op/ok on Win */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CST_OS_COMPAT_H */