main.c

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#include <stddef.h>
#include <stdint.h>
#include <unistd.h>
 
#include "ra8_attributes.h"
#include "ra8_fmt_host_fd_internal.h"
#include "ra8_fmt_portable_main_internal.h"
#include "ra8_log.h"

typedef enum : uint8_t {
  k_main_exit_usage = 2U, 
} main_exit_t;

static ra8_fmt_cli_workspace_t s_cli_workspace;

static const char s_usage[] =
  "usage:\n"
  "  ra8_fmt convert --format <fmt> --in <file> --out <file>\n"
  "  ra8_fmt inspect <container> [--verbose]\n"
  "  ra8_fmt verify  --format <fmt> --in <file> [--out <dump.ppm>]\n"
  "\nformats:\n"
  "  jof      .jof      [convert] [inspect] [verify] band-tile atlas (JOF): "
  "display-native, O(1) random access per tile\n"
  "  rabook   .rabook   [inspect] chunked book container (RBKC): compiled "
  "book, "
  "one unit = one book\n";

RA8_INTERNAL
static void internal_usage(const ra8_fmt_sink_t* errors)
{
  (void)errors->write(errors->ctx, (const uint8_t*)s_usage, sizeof(s_usage) - 1U);
}

RA8_INTERNAL
static int internal_dispatch(int argc, char** argv, bool* handled)
{
  int status = priv_fmt_try_portable_convert(argc,
                                             argv,
                                             s_cli_workspace.bytes,
                                             k_ra8_fmt_cli_convert_arena_bytes,
                                             handled);
  if (!*handled) {
    status = priv_fmt_try_portable_verify(argc, argv, &s_cli_workspace, handled);
  }
  if (!*handled) {
    status = priv_fmt_try_portable_inspect(argc, argv, &s_cli_workspace, handled);
  }
  return status;
}
 
int main(int argc, char** argv)
{
  ra8_fmt_host_fd_sink_t error_state = {.fd = STDERR_FILENO};
  const ra8_fmt_sink_t   errors      = priv_fmt_host_fd_sink(&error_state);
  ra8_log_set_byte_sink(priv_fmt_host_log_byte, &error_state);
  bool      handled = false;
  const int status  = internal_dispatch(argc, argv, &handled);
  if (handled) {
    return status;
  }
  internal_usage(&errors);
  return (int)k_main_exit_usage;
}