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#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#define ARGV_DRIVER
#include <sofort/sofort.h>
#include "sofort_driver_impl.h"
#include "argv/argv.h"
extern const struct argv_option sfrt_default_options[];
struct sfrt_driver_ctx_alloc {
struct argv_meta * meta;
struct sfrt_driver_ctx_impl ctx;
uint64_t guard;
const char * units[];
};
static uint32_t sfrt_argv_flags(uint32_t flags)
{
uint32_t ret = 0;
if (flags & SFRT_DRIVER_VERBOSITY_NONE)
ret |= ARGV_VERBOSITY_NONE;
if (flags & SFRT_DRIVER_VERBOSITY_ERRORS)
ret |= ARGV_VERBOSITY_ERRORS;
if (flags & SFRT_DRIVER_VERBOSITY_STATUS)
ret |= ARGV_VERBOSITY_STATUS;
return ret;
}
static int sfrt_driver_usage(
const char * program,
const char * arg,
const struct argv_option * options,
struct argv_meta * meta)
{
char header[512];
snprintf(header,sizeof(header),
"Usage: %s [options] <file>...\n" "Options:\n",
program);
argv_usage(stdout,header,options,arg);
argv_free(meta);
return SFRT_USAGE;
}
static struct sfrt_driver_ctx_impl * sfrt_driver_ctx_alloc(
struct argv_meta * meta,
const struct sfrt_common_ctx * cctx,
size_t nunits)
{
struct sfrt_driver_ctx_alloc * ictx;
size_t size;
struct argv_entry * entry;
const char ** units;
size = sizeof(struct sfrt_driver_ctx_alloc);
size += (nunits+1)*sizeof(const char *);
if (!(ictx = calloc(1,size)))
return 0;
if (cctx)
memcpy(&ictx->ctx.cctx,cctx,sizeof(*cctx));
for (entry=meta->entries,units=ictx->units; entry->fopt || entry->arg; entry++)
if (!entry->fopt)
*units++ = entry->arg;
ictx->meta = meta;
ictx->ctx.ctx.units = ictx->units;
return &ictx->ctx;
}
static int sfrt_get_driver_ctx_fail(struct argv_meta * meta)
{
argv_free(meta);
return -1;
}
int sfrt_get_driver_ctx(
const char ** argv,
const char ** envp,
uint32_t flags,
struct sfrt_driver_ctx ** pctx)
{
struct sfrt_driver_ctx_impl * ctx;
struct sfrt_common_ctx cctx;
const struct argv_option * options;
struct argv_meta * meta;
struct argv_entry * entry;
size_t nunits;
const char * program;
options = sfrt_default_options;
if (!(meta = argv_get(argv,options,sfrt_argv_flags(flags))))
return -1;
nunits = 0;
program = argv_program_name(argv[0]);
memset(&cctx,0,sizeof(cctx));
if (!argv[1] && (flags & SFRT_DRIVER_VERBOSITY_USAGE))
return sfrt_driver_usage(program,0,options,meta);
/* get options, count units */
for (entry=meta->entries; entry->fopt || entry->arg; entry++) {
if (entry->fopt) {
switch (entry->tag) {
case TAG_HELP:
if (flags & SFRT_DRIVER_VERBOSITY_USAGE)
return sfrt_driver_usage(program,entry->arg,options,meta);
case TAG_VERSION:
cctx.drvflags |= SFRT_DRIVER_VERSION;
break;
/* dummy */
/* dummy */ case TAG_OUTPUT_DUMMY:
/* dummy */ cctx.anystring = entry->arg;
/* dummy */ break;
/* dummy */
/* dummy */ case TAG_OUTPUT_PROPERTY:
/* dummy */ if (!(strcmp(entry->arg,"name")))
/* dummy */ cctx.actflags |= SFRT_OUTPUT_NAME;
/* dummy */ else if (!(strcmp(entry->arg,"address")))
/* dummy */ cctx.actflags |= SFRT_OUTPUT_ADDRESS;
/* dummy */ break;
}
} else
nunits++;
}
if (!(ctx = sfrt_driver_ctx_alloc(meta,&cctx,nunits)))
return sfrt_get_driver_ctx_fail(meta);
ctx->ctx.program = program;
ctx->ctx.cctx = &ctx->cctx;
*pctx = &ctx->ctx;
return SFRT_OK;
}
int sfrt_create_driver_ctx(
const struct sfrt_common_ctx * cctx,
struct sfrt_driver_ctx ** pctx)
{
struct argv_meta * meta;
struct sfrt_driver_ctx_impl * ctx;
const char * argv[] = {"sofort_driver",0};
if (!(meta = argv_get(argv,sfrt_default_options,0)))
return -1;
if (!(ctx = sfrt_driver_ctx_alloc(meta,cctx,0)))
return sfrt_get_driver_ctx_fail(0);
ctx->ctx.cctx = &ctx->cctx;
memcpy(&ctx->cctx,cctx,sizeof(*cctx));
*pctx = &ctx->ctx;
return SFRT_OK;
}
static void sfrt_free_driver_ctx_impl(struct sfrt_driver_ctx_alloc * ictx)
{
argv_free(ictx->meta);
free(ictx);
}
void sfrt_free_driver_ctx(struct sfrt_driver_ctx * ctx)
{
struct sfrt_driver_ctx_alloc * ictx;
uintptr_t addr;
if (ctx) {
addr = (uintptr_t)ctx - offsetof(struct sfrt_driver_ctx_alloc,ctx);
addr = addr - offsetof(struct sfrt_driver_ctx_impl,ctx);
ictx = (struct sfrt_driver_ctx_alloc *)addr;
sfrt_free_driver_ctx_impl(ictx);
}
}
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