Recreate base64 project

wapp/core/os/shell/commander/commander.c

@@ -0,0 +1,102 @@
+// vim:fileencoding=utf-8:foldmethod=marker
+
+#include "commander.h"
+#include "commander_output.h"
+#include "../utils/shell_utils.h"
+#include "../../../mem/arena/mem_arena_allocator.h"
+#include "../../../../common/aliases/aliases.h"
+#include "../../../../common/misc/misc_utils.h"
+#include "../../../../primitives/dbl_list/dbl_list.h"
+#include "../../../../primitives/mem_allocator/mem_allocator.h"
+#include "../../../../primitives/strings/str8/str8.h"
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define CMD_BUF_LEN 8192
+#define OUT_BUF_LEN 4096
+
+internal inline CMDResult execute_command(Str8RO *cmd, CMDOutHandling out_handling, Str8 *out_buf);
+internal inline CMDError get_command_output(FILE *fp, CMDOutHandling out_handling, Str8 *out_buf);
+
+CMDResult wapp_shell_commander_execute(CMDOutHandling out_handling, Str8 *out_buf, const Str8List *cmd) {
+  if (!cmd) {
+    return CMD_NO_EXIT(SHELL_ERR_INVALID_ARGS);
+  }
+
+  Allocator arena = wapp_mem_arena_allocator_init(KB(500));
+
+  Str8 *cmd_str = wapp_str8_join(&arena, cmd, &wapp_str8_lit_ro(" "));
+  if (!cmd_str) {
+    wapp_mem_arena_allocator_destroy(&arena);
+    return CMD_NO_EXIT(SHELL_ERR_ALLOCATION_FAIL);
+  }
+
+  // Redirect output
+  cmd_str = wapp_str8_alloc_concat(&arena, cmd_str, &wapp_str8_lit_ro(" 2>&1"));
+
+  CMDResult output = execute_command(cmd_str, out_handling, out_buf);
+
+  wapp_mem_arena_allocator_destroy(&arena);
+
+  return output;
+}
+
+internal inline CMDResult execute_command(Str8RO *cmd, CMDOutHandling out_handling, Str8 *out_buf) {
+  char cmd_buf[CMD_BUF_LEN] = {0};
+  wapp_str8_copy_to_cstr(cmd_buf, cmd, CMD_BUF_LEN);
+
+  FILE *fp = wapp_shell_utils_popen(cmd_buf, "r");
+  if (!fp) {
+    return CMD_NO_EXIT(SHELL_ERR_PROC_START_FAIL);
+  }
+
+  CMDResult output;
+
+  CMDError err = get_command_output(fp, out_handling, out_buf);
+  if (err > SHELL_ERR_NO_ERROR) {
+    output = CMD_NO_EXIT(err);
+    goto EXECUTE_COMMAND_CLOSE;
+  }
+
+  i32 st = EXIT_SUCCESS;
+  err = get_output_status(fp, &st);
+  if (err > SHELL_ERR_NO_ERROR) {
+    output = CMD_NO_EXIT(err);
+    goto EXECUTE_COMMAND_CLOSE;
+  }
+
+  // Process is already closed in get_output_status
+  fp = NULL;
+
+  output = (CMDResult){
+      .exited = true,
+      .exit_code = st,
+      .error = SHELL_ERR_NO_ERROR,
+  };
+
+EXECUTE_COMMAND_CLOSE:
+  if (fp) {
+    wapp_shell_utils_pclose(fp);
+  }
+  return output;
+}
+
+internal inline CMDError get_command_output(FILE *fp, CMDOutHandling out_handling, Str8 *out_buf) {
+  Str8 out = wapp_str8_buf(OUT_BUF_LEN);
+
+  out.size = fread((void *)out.buf, sizeof(u8), out.capacity, fp);
+  if (out_handling == SHELL_OUTPUT_CAPTURE && out_buf != NULL) {
+    if (out.size >= out_buf->capacity) {
+      return SHELL_ERR_OUT_BUF_FULL;
+    }
+
+    wapp_str8_concat_capped(out_buf, &out);
+  } else if (out_handling == SHELL_OUTPUT_PRINT) {
+    printf(WAPP_STR8_SPEC, wapp_str8_varg(out));
+  }
+
+  return SHELL_ERR_NO_ERROR;
+}

wapp/core/os/shell/commander/commander.h

@@ -0,0 +1,28 @@
+// vim:fileencoding=utf-8:foldmethod=marker
+
+#ifndef COMMANDER_H
+#define COMMANDER_H
+
+#include "commander_output.h"
+#include "../../../../common/aliases/aliases.h"
+#include "../../../../common/platform/platform.h"
+#include "../../../../primitives/strings/str8/str8.h"
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef WAPP_PLATFORM_CPP
+BEGIN_C_LINKAGE
+#endif // !WAPP_PLATFORM_CPP
+
+#define CMD_NO_EXIT(ERR) ((CMDResult){.exited = false, .exit_code = EXIT_FAILURE, .error = ERR})
+
+CMDResult wapp_shell_commander_execute(CMDOutHandling out_handling, Str8 *out_buf, const Str8List *cmd);
+
+external CMDError get_output_status(FILE *fp, i32 *status_out);
+
+#ifdef WAPP_PLATFORM_CPP
+END_C_LINKAGE
+#endif // !WAPP_PLATFORM_CPP
+
+#endif // !COMMANDER_H

wapp/core/os/shell/commander/commander_output.h

@@ -0,0 +1,45 @@
+// vim:fileencoding=utf-8:foldmethod=marker
+
+#ifndef COMMANDER_OUTPUT_H
+#define COMMANDER_OUTPUT_H
+
+#include "../../../../common/aliases/aliases.h"
+#include "../../../../common/platform/platform.h"
+#include <stdbool.h>
+
+#ifdef WAPP_PLATFORM_CPP
+BEGIN_C_LINKAGE
+#endif // !WAPP_PLATFORM_CPP
+
+typedef enum {
+  SHELL_OUTPUT_DISCARD,
+  SHELL_OUTPUT_PRINT,
+  SHELL_OUTPUT_CAPTURE,
+} CMDOutHandling;
+
+typedef enum {
+  SHELL_ERR_NO_ERROR,
+  SHELL_ERR_INVALID_ARGS,
+  SHELL_ERR_ALLOCATION_FAIL,
+  SHELL_ERR_PROC_START_FAIL,
+  SHELL_ERR_OUT_BUF_FULL,
+  SHELL_ERR_PROC_EXIT_FAIL,
+} CMDError;
+
+typedef struct commander_result CMDResult;
+struct commander_result {
+  i32 exit_code;
+  CMDError error;
+  bool exited;
+
+#ifdef WAPP_PLATFORM_WINDOWS
+  #include "../../../../common/misc/misc_utils.h"
+  wapp_misc_utils_padding_size(sizeof(bool) + sizeof(i32) + sizeof(CMDError));
+#endif // !WAPP_PLATFORM_WINDOWS
+};
+
+#ifdef WAPP_PLATFORM_CPP
+END_C_LINKAGE
+#endif // !WAPP_PLATFORM_CPP
+
+#endif // !COMMANDER_OUTPUT_H

wapp/core/os/shell/commander/posix/commander_posix.c

@@ -0,0 +1,25 @@
+// vim:fileencoding=utf-8:foldmethod=marker
+
+#include "../../../../../common/aliases/aliases.h"
+#include "../../../../../common/platform/platform.h"
+
+#ifdef WAPP_PLATFORM_POSIX
+
+#include "../commander_output.h"
+#include "../../utils/shell_utils.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+CMDError get_output_status(FILE *fp, i32 *status_out) {
+  *status_out = wapp_shell_utils_pclose(fp);
+
+  if (!WIFEXITED(*status_out)) {
+    return SHELL_ERR_PROC_EXIT_FAIL;
+  }
+
+  *status_out = WEXITSTATUS(*status_out);
+
+  return SHELL_ERR_NO_ERROR;
+}
+
+#endif // !WAPP_PLATFORM_POSIX

wapp/core/os/shell/commander/win/commander_win.c

@@ -0,0 +1,24 @@
+// vim:fileencoding=utf-8:foldmethod=marker
+
+#include "../../../../../common/aliases/aliases.h"
+#include "../../../../../common/platform/platform.h"
+
+#ifdef WAPP_PLATFORM_WINDOWS
+
+#include "../commander_output.h"
+#include "../../utils/shell_utils.h"
+#include <stdio.h>
+
+CMDError get_output_status(FILE *fp, i32 *status_out) {
+  if (!feof(fp)) {
+    // Ensure process is closed on failure
+    wapp_shell_utils_pclose(fp);
+    return SHELL_ERR_PROC_EXIT_FAIL;
+  }
+
+  *status_out = wapp_shell_utils_pclose(fp);
+
+  return SHELL_ERR_NO_ERROR;
+}
+
+#endif // !WAPP_PLATFORM_WINDOWS